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Diffstat (limited to '')
196 files changed, 24097 insertions, 0 deletions
diff --git a/lib/libucsi/Makefile b/lib/libucsi/Makefile new file mode 100644 index 0000000..19ab268 --- /dev/null +++ b/lib/libucsi/Makefile @@ -0,0 +1,34 @@ +# Makefile for linuxtv.org dvb-apps/lib/libucsi + +includes = crc32.h \ + descriptor.h \ + endianops.h \ + section.h \ + section_buf.h \ + transport_packet.h \ + types.h + +objects = crc32.o \ + section_buf.o \ + transport_packet.o + +lib_name = libucsi + +CPPFLAGS += -I../../lib + +.PHONY: all + +all: library + +include atsc/Makefile +include dvb/Makefile +include mpeg/Makefile + +.PHONY: $(sub-install) + +install:: $(sub-install) + +$(sub-install): + $(MAKE) -C $@ install + +include ../../Make.rules diff --git a/lib/libucsi/atsc/Makefile b/lib/libucsi/atsc/Makefile new file mode 100644 index 0000000..c3d8e6b --- /dev/null +++ b/lib/libucsi/atsc/Makefile @@ -0,0 +1,55 @@ +# Makefile for linuxtv.org dvb-apps/lib/libucsi/atsc + +.PHONY: sub-error-atsc + +sub-error-atsc: + $(error You can't use this makefile directly.) + +ifneq ($(lib_name),) + +objects += atsc/atsc_text.o \ + atsc/cvct_section.o \ + atsc/dccsct_section.o \ + atsc/dcct_section.o \ + atsc/eit_section.o \ + atsc/ett_section.o \ + atsc/mgt_section.o \ + atsc/rrt_section.o \ + atsc/stt_section.o \ + atsc/tvct_section.o \ + atsc/types.o + +sub-install += atsc + +else + +includes = ac3_descriptor.h \ + caption_service_descriptor.h \ + component_name_descriptor.h \ + content_advisory_descriptor.h \ + cvct_section.h \ + dcc_arriving_request_descriptor.h \ + dcc_departing_request_descriptor.h \ + dccsct_section.h \ + dcct_section.h \ + descriptor.h \ + eit_section.h \ + ett_section.h \ + extended_channel_name_descriptor.h \ + genre_descriptor.h \ + mgt_section.h \ + rc_descriptor.h \ + rrt_section.h \ + section.h \ + service_location_descriptor.h \ + stt_section.h \ + stuffing_descriptor.h \ + time_shifted_service_descriptor.h \ + tvct_section.h \ + types.h + +include ../../../Make.rules + +lib_name = libucsi/atsc + +endif diff --git a/lib/libucsi/atsc/ac3_descriptor.h b/lib/libucsi/atsc/ac3_descriptor.h new file mode 100644 index 0000000..489695b --- /dev/null +++ b/lib/libucsi/atsc/ac3_descriptor.h @@ -0,0 +1,112 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_atsc@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_ATSC_AC3_DESCRIPTOR +#define _UCSI_ATSC_AC3_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +enum atsc_ac3_channels { + ATSC_AC3_CHANNELS_1_PLUS_1 = 0x0, + ATSC_AC3_CHANNELS_1_0 = 0x1, + ATSC_AC3_CHANNELS_2_0 = 0x2, + ATSC_AC3_CHANNELS_3_0 = 0x3, + ATSC_AC3_CHANNELS_2_1 = 0x4, + ATSC_AC3_CHANNELS_3_1 = 0x5, + ATSC_AC3_CHANNELS_2_2 = 0x6, + ATSC_AC3_CHANNELS_3_2 = 0x7, + ATSC_AC3_CHANNELS_1 = 0x8, + ATSC_AC3_CHANNELS_LTEQ_2 = 0x9, + ATSC_AC3_CHANNELS_LTEQ_3 = 0xa, + ATSC_AC3_CHANNELS_LTEQ_4 = 0xb, + ATSC_AC3_CHANNELS_LTEQ_5 = 0xc, + ATSC_AC3_CHANNELS_LTEQ_6 = 0xd, +}; + +/** + * atsc_ac3_descriptor structure. + */ +struct atsc_ac3_descriptor { + struct descriptor d; + + EBIT2(uint8_t sample_rate_code : 3; , + uint8_t bsid : 5; ); + EBIT2(uint8_t bit_rate_code : 6; , + uint8_t surround_mode : 2; ); + EBIT3(uint8_t bsmod : 3; , + uint8_t num_channels : 4; , + uint8_t full_svc : 1; ); + /* uint8_t additional_info[] */ +} __ucsi_packed; + +/** + * Process an atsc_ac3_descriptor. + * + * @param d Generic descriptor structure. + * @return atsc_ac3_descriptor pointer, or NULL on error. + */ +static inline struct atsc_ac3_descriptor* + atsc_ac3_descriptor_codec(struct descriptor* d) +{ + int pos = 0; + + if (d->len < (pos+4)) + return NULL; + pos += 4; + + return (struct atsc_ac3_descriptor*) d; +} + +/** + * Retrieve pointer to additional_info field of a atsc_ac3_descriptor. + * + * @param d atsc_ac3_descriptor pointer. + * @return Pointer to additional_info field. + */ +static inline uint8_t *atsc_ac3_descriptor_additional_info(struct atsc_ac3_descriptor *d) +{ + int pos = sizeof(struct atsc_ac3_descriptor); + + return ((uint8_t *) d) + pos; +} + +/** + * Determine length of additional_info field of a atsc_ac3_descriptor. + * + * @param d atsc_ac3_descriptor pointer. + * @return Length of field in bytes. + */ +static inline int atsc_ac3_descriptor_additional_info_length(struct atsc_ac3_descriptor* d) +{ + return d->d.len - 3; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/atsc/atsc_text.c b/lib/libucsi/atsc/atsc_text.c new file mode 100644 index 0000000..d79c83f --- /dev/null +++ b/lib/libucsi/atsc/atsc_text.c @@ -0,0 +1,743 @@ +/* +* section and descriptor parser +* +* Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) +* +* This library is free software; you can redistribute it and/or +* modify it under the terms of the GNU Lesser General Public +* License as published by the Free Software Foundation; either +* version 2.1 of the License, or (at your option) any later version. +* +* This library is distributed in the hope that it will be useful, +* but WITHOUT ANY WARRANTY; without even the implied warranty of +* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +* Lesser General Public License for more details. +* +* You should have received a copy of the GNU Lesser General Public +* License along with this library; if not, write to the Free Software +* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA +*/ + +#include <stdint.h> +#include <stdlib.h> +#include <string.h> +#include <errno.h> +#include "libucsi/endianops.h" +#include "libucsi/atsc/types.h" + +#define HUFFTREE_LITERAL_MASK 0x80 +#define HUFFSTRING_END 0x00 +#define HUFFSTRING_ESCAPE 0x1b + +#define DEST_ALLOC_DELTA 20 + +struct hufftree_entry { + uint8_t left_idx; + uint8_t right_idx; +} __ucsi_packed; + +struct huffbuff { + uint8_t *buf; + uint32_t buf_len; + + uint32_t cur_byte; + uint8_t cur_bit; +}; + + +static struct hufftree_entry program_description_hufftree[][128] = { + { {0x14, 0x15}, {0x9b, 0xd6}, {0xc9, 0xcf}, {0xd7, 0xc7}, {0x01, 0xa2}, + {0xce, 0xcb}, {0x02, 0x03}, {0xc5, 0xcc}, {0xc6, 0xc8}, {0x04, 0xc4}, + {0x05, 0xc2}, {0x06, 0xc3}, {0xd2, 0x07}, {0xd3, 0x08}, {0xca, 0xd4}, + {0x09, 0xcd}, {0xd0, 0x0a}, {0xc1, 0x0b}, {0x0c, 0x0d}, {0x0e, 0x0f}, + {0x10, 0x11}, {0x12, 0x13}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x38, 0x39}, {0xad, 0xaf}, {0xb7, 0xda}, {0xa8, 0xb3}, {0xb5, 0x01}, + {0x02, 0x9b}, {0xb4, 0xf1}, {0xa2, 0xd5}, {0xd6, 0xd9}, {0x03, 0x04}, + {0x05, 0xcf}, {0x06, 0xc9}, {0xf9, 0xea}, {0xeb, 0xf5}, {0xf6, 0x07}, + {0x08, 0x09}, {0xb2, 0xc5}, {0xc6, 0xb1}, {0x0a, 0xee}, {0xcb, 0x0b}, + {0xd4, 0x0c}, {0xc4, 0xc8}, {0xd2, 0x0d}, {0x0e, 0x0f}, {0xc7, 0xca}, + {0xce, 0xd0}, {0xd7, 0x10}, {0xc2, 0x11}, {0xcc, 0xec}, {0xe5, 0xe7}, + {0x12, 0xcd}, {0x13, 0x14}, {0xc3, 0x15}, {0x16, 0x17}, {0xed, 0x18}, + {0x19, 0xf2}, {0x1a, 0xd3}, {0x1b, 0x1c}, {0xe4, 0x1d}, {0xc1, 0xe3}, + {0x1e, 0xe9}, {0xf0, 0xe2}, {0xf7, 0x1f}, {0xf3, 0xe6}, {0x20, 0x21}, + {0x22, 0xe8}, {0xef, 0x23}, {0x24, 0x25}, {0x26, 0x27}, {0x28, 0x29}, + {0x2a, 0xf4}, {0x2b, 0x2c}, {0x2d, 0x2e}, {0x2f, 0xe1}, {0x30, 0x31}, + {0x32, 0x33}, {0x34, 0x35}, {0x36, 0x37}, }, + { {0x9b, 0x9b}, }, + { {0x03, 0x04}, {0x80, 0xae}, {0xc8, 0xd4}, {0x01, 0x02}, {0x9b, 0xa0}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x02, 0xf3}, {0xa0, 0xf4}, {0x9b, 0x01}, }, + { {0x9b, 0x9b}, }, + { {0xac, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x01, 0xa0}, {0x9b, 0xa2}, }, + { {0x07, 0x08}, {0xe2, 0xe4}, {0xe5, 0xe6}, {0xa0, 0xf2}, {0xe1, 0x01}, + {0x02, 0xf3}, {0xe3, 0x03}, {0x04, 0x05}, {0x9b, 0x06}, }, + { {0x04, 0x80}, {0xca, 0xd3}, {0xa2, 0x01}, {0x9b, 0x02}, {0x03, 0xa0}, }, + { {0x9b, 0xa0}, }, + { {0x03, 0x04}, {0x9b, 0xb7}, {0xf4, 0xa0}, {0xb0, 0xf3}, {0x01, 0x02}, }, + { {0xb9, 0x02}, {0xb8, 0x9b}, {0xa0, 0x01}, }, + { {0xae, 0x02}, {0xb6, 0x9b}, {0x01, 0xa0}, }, + { {0xa0, 0x01}, {0x9b, 0xb0}, }, + { {0xae, 0x01}, {0x9b, 0xa0}, }, + { {0xae, 0x01}, {0xa0, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x01}, {0xac, 0xae}, }, + { {0x9b, 0x9b}, }, + { {0x02, 0x03}, {0x9b, 0xa0}, {0xb5, 0xb6}, {0xb8, 0x01}, }, + { {0x9b, 0xa0}, }, + { {0x9b, 0xa0}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0xa0}, }, + { {0x9b, 0x9b}, }, + { {0x08, 0x09}, {0xe6, 0xf5}, {0xf3, 0xf4}, {0x9b, 0xe4}, {0x01, 0xed}, + {0x02, 0x03}, {0x04, 0xf2}, {0x05, 0x06}, {0xec, 0xee}, {0x07, 0xa0}, }, + { {0x05, 0x06}, {0x9b, 0xec}, {0xf5, 0x01}, {0x02, 0xe1}, {0xef, 0xe5}, + {0xe9, 0xf2}, {0x03, 0x04}, }, + { {0x06, 0x07}, {0x9b, 0xe9}, {0xf9, 0xf2}, {0xf5, 0x01}, {0x02, 0x03}, + {0xec, 0xef}, {0xe1, 0x04}, {0xe8, 0x05}, }, + { {0x05, 0x06}, {0xf9, 0xf2}, {0xf5, 0x9b}, {0xe5, 0xef}, {0x01, 0x02}, + {0xe9, 0xe1}, {0x03, 0x04}, }, + { {0x06, 0x07}, {0xe1, 0xe9}, {0xee, 0xf6}, {0xe4, 0xec}, {0xf3, 0x01}, + {0x02, 0xf2}, {0x03, 0x04}, {0x9b, 0x05}, }, + { {0x02, 0x03}, {0xe5, 0xec}, {0x9b, 0xef}, {0x01, 0xf2}, }, + { {0x05, 0x06}, {0xf5, 0xef}, {0x9b, 0xec}, {0xe9, 0x01}, {0xe1, 0xf2}, + {0x02, 0xe5}, {0x03, 0x04}, }, + { {0x03, 0x04}, {0x9b, 0xe5}, {0xe9, 0xf5}, {0xe1, 0x01}, {0xef, 0x02}, }, + { {0x04, 0x05}, {0xa0, 0xc9}, {0xf3, 0x9b}, {0xae, 0xf2}, {0x01, 0x02}, + {0x03, 0xee}, }, + { {0xef, 0x05}, {0x9b, 0xae}, {0xe9, 0xe5}, {0x01, 0xf5}, {0x02, 0xe1}, + {0x03, 0x04}, }, + { {0xe5, 0x03}, {0xe1, 0xe9}, {0xf2, 0x9b}, {0x01, 0x02}, }, + { {0x03, 0x04}, {0x9b, 0xe9}, {0xf5, 0x01}, {0xe5, 0x02}, {0xef, 0xe1}, }, + { {0xe1, 0x05}, {0x9b, 0xe3}, {0xef, 0x01}, {0xf5, 0xe5}, {0x02, 0x03}, + {0xe9, 0x04}, }, + { {0xe5, 0x03}, {0x9b, 0xe9}, {0x01, 0xe1}, {0xef, 0x02}, }, + { {0x03, 0x04}, {0xa7, 0xee}, {0xec, 0xf2}, {0xf3, 0x01}, {0x9b, 0x02}, }, + { {0xe1, 0x06}, {0x9b, 0xe8}, {0xe9, 0x01}, {0xf2, 0xec}, {0x02, 0xef}, + {0x03, 0xe5}, {0x04, 0x05}, }, + { {0x9b, 0x9b}, }, + { {0x03, 0x04}, {0x9b, 0xae}, {0x01, 0xe9}, {0x02, 0xe1}, {0xe5, 0xef}, }, + { {0x09, 0x0a}, {0xf6, 0xf9}, {0x01, 0xae}, {0xe3, 0xe9}, {0xf5, 0x9b}, + {0xe5, 0xef}, {0x02, 0x03}, {0xe1, 0x04}, {0xe8, 0x05}, {0x06, 0xf4}, + {0x07, 0x08}, }, + { {0xe8, 0x07}, {0xe5, 0xf7}, {0xd6, 0xe1}, {0x9b, 0xe9}, {0xf2, 0x01}, + {0x02, 0x03}, {0x04, 0xef}, {0x05, 0x06}, }, + { {0xae, 0x01}, {0x9b, 0xee}, }, + { {0xe9, 0x02}, {0xe5, 0x9b}, {0xa0, 0x01}, }, + { {0x03, 0x04}, {0x9b, 0xe8}, {0xe5, 0xe1}, {0xef, 0x01}, {0xe9, 0x02}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0xef}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x18, 0x19}, {0xe8, 0xef}, {0xf8, 0x9b}, {0xa7, 0xf7}, {0xfa, 0x01}, + {0x02, 0x03}, {0x04, 0xe5}, {0xae, 0x05}, {0xe6, 0xe2}, {0x06, 0xf6}, + {0xeb, 0xf5}, {0xe9, 0x07}, {0xf0, 0xf9}, {0xe7, 0x08}, {0x09, 0xe4}, + {0x0a, 0xe3}, {0x0b, 0xed}, {0x0c, 0xf3}, {0x0d, 0x0e}, {0x0f, 0xec}, + {0x10, 0xf4}, {0x11, 0x12}, {0xf2, 0xa0}, {0x13, 0x14}, {0x15, 0xee}, + {0x16, 0x17}, }, + { {0x0b, 0x0c}, {0xe4, 0xf3}, {0x9b, 0xae}, {0xe2, 0x01}, {0x02, 0x03}, + {0xec, 0xa0}, {0x04, 0xe9}, {0xf2, 0xf5}, {0x05, 0xf9}, {0xe1, 0x06}, + {0xef, 0x07}, {0xe5, 0x08}, {0x09, 0x0a}, }, + { {0x0f, 0x10}, {0xf1, 0xae}, {0xc4, 0xf9}, {0xac, 0x01}, {0xe3, 0x02}, + {0x9b, 0xf2}, {0x03, 0x04}, {0xa0, 0xec}, {0xf5, 0x05}, {0x06, 0xe9}, + {0x07, 0xeb}, {0x08, 0xf4}, {0x09, 0xe5}, {0x0a, 0xef}, {0xe1, 0xe8}, + {0x0b, 0x0c}, {0x0d, 0x0e}, }, + { {0x13, 0x14}, {0xa7, 0xbb}, {0xe6, 0xed}, {0xf7, 0xe7}, {0xf6, 0x01}, + {0x02, 0x9b}, {0xee, 0x03}, {0x04, 0xec}, {0x05, 0xf5}, {0x06, 0xac}, + {0xe4, 0xf9}, {0xf2, 0x07}, {0x08, 0x09}, {0xae, 0x0a}, {0xef, 0x0b}, + {0xe1, 0xf3}, {0x0c, 0xe9}, {0x0d, 0x0e}, {0x0f, 0x10}, {0xe5, 0x11}, + {0x12, 0xa0}, }, + { {0x1d, 0x1e}, {0xa9, 0xe8}, {0xf5, 0x9b}, {0x01, 0xad}, {0xbb, 0xeb}, + {0xfa, 0x02}, {0xa7, 0xe6}, {0xe2, 0xe7}, {0x03, 0x04}, {0x05, 0x06}, + {0xe9, 0xf8}, {0x07, 0xac}, {0xef, 0xf0}, {0x08, 0xed}, {0xf6, 0xf9}, + {0x09, 0xf7}, {0x0a, 0x0b}, {0xae, 0x0c}, {0xe3, 0x0d}, {0xe5, 0xf4}, + {0x0e, 0x0f}, {0xe4, 0x10}, {0xec, 0x11}, {0xe1, 0x12}, {0x13, 0x14}, + {0x15, 0x16}, {0xee, 0xf3}, {0x17, 0x18}, {0xf2, 0xa0}, {0x19, 0x1a}, + {0x1b, 0x1c}, }, + { {0x09, 0x0a}, {0xae, 0x9b}, {0xec, 0x01}, {0xf5, 0x02}, {0xf4, 0xe6}, + {0x03, 0xe1}, {0xe5, 0xe9}, {0x04, 0xf2}, {0xef, 0x05}, {0x06, 0x07}, + {0xa0, 0x08}, }, + { {0x0e, 0x0f}, {0xad, 0xe7}, {0x9b, 0xa7}, {0xf9, 0x01}, {0xec, 0x02}, + {0xac, 0xf2}, {0x03, 0xae}, {0xf3, 0xf5}, {0x04, 0x05}, {0xef, 0x06}, + {0x07, 0xe9}, {0xe1, 0x08}, {0x09, 0xe8}, {0x0a, 0x0b}, {0xe5, 0x0c}, + {0xa0, 0x0d}, }, + { {0x0d, 0x0e}, {0xa7, 0xac}, {0xf3, 0xad}, {0x01, 0x02}, {0x9b, 0xf9}, + {0xf5, 0xae}, {0x03, 0xee}, {0x04, 0xf2}, {0x05, 0x06}, {0xf4, 0x07}, + {0x08, 0x09}, {0xef, 0xe1}, {0xa0, 0x0a}, {0xe9, 0x0b}, {0x0c, 0xe5}, }, + { {0x14, 0x15}, {0xac, 0xe2}, {0xf8, 0x9b}, {0xae, 0xfa}, {0x01, 0xeb}, + {0x02, 0xa0}, {0x03, 0x04}, {0xf0, 0x05}, {0x06, 0xe6}, {0xf6, 0x07}, + {0xe4, 0xed}, {0xe7, 0x08}, {0xe1, 0xef}, {0xf2, 0x09}, {0x0a, 0x0b}, + {0xec, 0x0c}, {0xe5, 0xe3}, {0x0d, 0xf4}, {0x0e, 0xf3}, {0x0f, 0x10}, + {0x11, 0xee}, {0x12, 0x13}, }, + { {0x03, 0xef}, {0x9b, 0xe1}, {0xe5, 0xf5}, {0x01, 0x02}, }, + { {0x08, 0x09}, {0xec, 0xf9}, {0xa7, 0xee}, {0x01, 0xac}, {0x9b, 0xae}, + {0x02, 0x03}, {0x04, 0xf3}, {0x05, 0xe9}, {0x06, 0xa0}, {0x07, 0xe5}, }, + { {0x16, 0x17}, {0xa7, 0xad}, {0xee, 0xe3}, {0xeb, 0xf2}, {0x9b, 0xe2}, + {0x01, 0x02}, {0xf5, 0x03}, {0xf4, 0xac}, {0x04, 0x05}, {0xe6, 0xed}, + {0xf6, 0x06}, {0xae, 0xf0}, {0x07, 0x08}, {0xf3, 0x09}, {0x0a, 0xe4}, + {0x0b, 0x0c}, {0xf9, 0x0d}, {0xef, 0x0e}, {0xe1, 0x0f}, {0x10, 0xe9}, + {0xec, 0x11}, {0xa0, 0xe5}, {0x12, 0x13}, {0x14, 0x15}, }, + { {0x0c, 0x0d}, {0xa7, 0xbb}, {0x9b, 0x01}, {0xf9, 0xae}, {0xe2, 0x02}, + {0xed, 0xf3}, {0x03, 0xf5}, {0xef, 0xf0}, {0x04, 0x05}, {0xe9, 0x06}, + {0x07, 0x08}, {0x09, 0xa0}, {0xe1, 0xe5}, {0x0a, 0x0b}, }, + { {0x19, 0x1a}, {0xad, 0xbb}, {0xe2, 0xea}, {0xed, 0xf2}, {0xfa, 0xe6}, + {0xec, 0x01}, {0x02, 0x03}, {0x9b, 0xf5}, {0x04, 0xa7}, {0xf6, 0xf9}, + {0x05, 0x06}, {0xeb, 0xef}, {0x07, 0x08}, {0x09, 0x0a}, {0xac, 0x0b}, + {0x0c, 0xe3}, {0xae, 0x0d}, {0xee, 0xe9}, {0x0e, 0xe1}, {0x0f, 0xf3}, + {0x10, 0x11}, {0xf4, 0x12}, {0xe7, 0xe5}, {0x13, 0x14}, {0xe4, 0x15}, + {0x16, 0x17}, {0xa0, 0x18}, }, + { {0x1a, 0x1b}, {0xc2, 0x9b}, {0xad, 0xac}, {0xf8, 0x01}, {0xae, 0x02}, + {0x03, 0xe5}, {0xe7, 0xe8}, {0xf9, 0xe9}, {0xeb, 0x04}, {0xe3, 0xe1}, + {0x05, 0xf6}, {0x06, 0xe4}, {0x07, 0xe2}, {0xf0, 0x08}, {0x09, 0xf3}, + {0xf4, 0xf7}, {0xef, 0x0a}, {0x0b, 0x0c}, {0x0d, 0xec}, {0x0e, 0x0f}, + {0x10, 0xf5}, {0xed, 0x11}, {0xe6, 0xa0}, {0x12, 0xf2}, {0x13, 0x14}, + {0x15, 0xee}, {0x16, 0x17}, {0x18, 0x19}, }, + { {0x0e, 0x0f}, {0xad, 0xed}, {0xf9, 0x9b}, {0xae, 0x01}, {0xf3, 0x02}, + {0x03, 0xf5}, {0xf4, 0xf0}, {0x04, 0xef}, {0x05, 0xe9}, {0x06, 0xe8}, + {0xa0, 0xe1}, {0xec, 0x07}, {0xf2, 0x08}, {0xe5, 0x09}, {0x0a, 0x0b}, + {0x0c, 0x0d}, }, + { {0x9b, 0xf5}, }, + { {0x19, 0x1a}, {0xa9, 0xbb}, {0xf6, 0xe6}, {0x01, 0x9b}, {0xad, 0xe2}, + {0xf0, 0x02}, {0xa7, 0x03}, {0x04, 0x05}, {0xf5, 0xe3}, {0xac, 0xe7}, + {0xf2, 0x06}, {0xeb, 0x07}, {0xec, 0xed}, {0xee, 0xf9}, {0x08, 0xae}, + {0x09, 0x0a}, {0xe4, 0x0b}, {0x0c, 0xf4}, {0x0d, 0xf3}, {0x0e, 0x0f}, + {0x10, 0xe1}, {0xef, 0x11}, {0xe9, 0x12}, {0x13, 0xe5}, {0x14, 0xa0}, + {0x15, 0x16}, {0x17, 0x18}, }, + { {0xa0, 0x16}, {0xa2, 0xa7}, {0xe2, 0xeb}, {0xed, 0xee}, {0x9b, 0xf7}, + {0x01, 0x02}, {0x03, 0xbb}, {0xf9, 0xf0}, {0x04, 0x05}, {0xec, 0x06}, + {0x07, 0x08}, {0xf5, 0xe1}, {0x09, 0xac}, {0xe3, 0x0a}, {0xe8, 0x0b}, + {0xe9, 0x0c}, {0xef, 0xf3}, {0xae, 0x0d}, {0x0e, 0xe5}, {0x0f, 0x10}, + {0x11, 0xf4}, {0x12, 0x13}, {0x14, 0x15}, }, + { {0x14, 0x15}, {0xbb, 0xe2}, {0xad, 0xed}, {0x01, 0x9b}, {0xa7, 0xe3}, + {0xac, 0xec}, {0xee, 0x02}, {0xf7, 0x03}, {0x04, 0xf9}, {0x05, 0x06}, + {0x07, 0x08}, {0xf4, 0xae}, {0xf5, 0x09}, {0x0a, 0xf2}, {0xe1, 0xf3}, + {0x0b, 0x0c}, {0x0d, 0xe9}, {0x0e, 0x0f}, {0xef, 0xe5}, {0x10, 0xa0}, + {0xe8, 0x11}, {0x12, 0x13}, }, + { {0x11, 0x12}, {0xef, 0xf6}, {0x9b, 0xeb}, {0xf9, 0x01}, {0xa0, 0xe2}, + {0x02, 0xe1}, {0x03, 0xed}, {0x04, 0xe3}, {0xe9, 0x05}, {0xe4, 0xe5}, + {0xe7, 0x06}, {0xec, 0xf0}, {0x07, 0x08}, {0x09, 0x0a}, {0x0b, 0xf3}, + {0x0c, 0xf4}, {0xee, 0x0d}, {0xf2, 0x0e}, {0x0f, 0x10}, }, + { {0x05, 0xe5}, {0xf3, 0xf9}, {0x9b, 0x01}, {0xef, 0x02}, {0x03, 0xe1}, + {0x04, 0xe9}, }, + { {0x0a, 0x0b}, {0xae, 0x9b}, {0xec, 0xed}, {0x01, 0x02}, {0xf3, 0xee}, + {0xf2, 0x03}, {0xe5, 0x04}, {0xe8, 0xa0}, {0xe1, 0x05}, {0xef, 0x06}, + {0x07, 0x08}, {0xe9, 0x09}, }, + { {0x05, 0x06}, {0xa0, 0xac}, {0xad, 0xf4}, {0xe9, 0x01}, {0x02, 0xe1}, + {0xe5, 0x03}, {0x9b, 0x04}, }, + { {0x11, 0xa0}, {0xbf, 0xe1}, {0xe2, 0xe6}, {0xed, 0xe4}, {0xe9, 0xf7}, + {0xa7, 0x01}, {0x02, 0xbb}, {0x03, 0x04}, {0xec, 0x05}, {0x9b, 0xee}, + {0x06, 0xef}, {0x07, 0xac}, {0xe5, 0xf3}, {0x08, 0x09}, {0x0a, 0xae}, + {0x0b, 0x0c}, {0x0d, 0x0e}, {0x0f, 0x10}, }, + { {0x06, 0x07}, {0xa0, 0xae}, {0xe1, 0xe5}, {0xec, 0xfa}, {0x9b, 0xef}, + {0xe9, 0x01}, {0x02, 0x03}, {0x04, 0x05}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, +}; + +static struct hufftree_entry program_title_hufftree[][128] = { + { {0x1b, 0x1c}, {0xb4, 0xa4}, {0xb2, 0xb7}, {0xda, 0x01}, {0xd1, 0x02}, + {0x03, 0x9b}, {0x04, 0xd5}, {0xd9, 0x05}, {0xcb, 0xd6}, {0x06, 0xcf}, + {0x07, 0x08}, {0xca, 0x09}, {0xc9, 0xc5}, {0xc6, 0x0a}, {0xd2, 0xc4}, + {0xc7, 0xcc}, {0xd0, 0xc8}, {0xd7, 0xce}, {0x0b, 0xc1}, {0x0c, 0xc2}, + {0xcd, 0xc3}, {0x0d, 0x0e}, {0x0f, 0x10}, {0xd3, 0x11}, {0xd4, 0x12}, + {0x13, 0x14}, {0x15, 0x16}, {0x17, 0x18}, {0x19, 0x1a}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x29, 0x2a}, {0xd8, 0xe5}, {0xb9, 0x01}, {0xa7, 0xb1}, {0xec, 0xd1}, + {0x02, 0xad}, {0xb2, 0xda}, {0xe3, 0xb3}, {0x03, 0xe4}, {0xe6, 0x04}, + {0x9b, 0xe2}, {0x05, 0x06}, {0x07, 0x08}, {0x09, 0xd5}, {0x0a, 0xd6}, + {0x0b, 0xd9}, {0x0c, 0xa6}, {0xe9, 0xcb}, {0xc5, 0xcf}, {0x0d, 0x0e}, + {0xca, 0xc9}, {0x0f, 0xc7}, {0x10, 0x11}, {0xe1, 0x12}, {0x13, 0xc6}, + {0xd2, 0xc8}, {0xce, 0xc1}, {0xc4, 0xd0}, {0xcc, 0x14}, {0x15, 0xef}, + {0xc2, 0xd7}, {0x16, 0xcd}, {0x17, 0xf4}, {0xd4, 0x18}, {0x19, 0x1a}, + {0xc3, 0xd3}, {0x1b, 0x1c}, {0x1d, 0x1e}, {0x1f, 0x20}, {0x21, 0x22}, + {0x23, 0x24}, {0x25, 0x26}, {0x27, 0x28}, }, + { {0x01, 0x80}, {0xa0, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0xb1, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0xa0}, }, + { {0x04, 0xf3}, {0xe4, 0xb9}, {0x01, 0xf4}, {0xa0, 0x9b}, {0x02, 0x03}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x01, 0x02}, {0x9b, 0xc1}, {0xc8, 0xd3}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0xa0}, }, + { {0x07, 0x08}, {0xb1, 0xd2}, {0xd3, 0xd4}, {0xd5, 0xad}, {0xcd, 0xc1}, + {0x01, 0x02}, {0x03, 0xa0}, {0x04, 0x9b}, {0x05, 0x06}, }, + { {0xa0, 0x05}, {0xc9, 0xd7}, {0xd3, 0x01}, {0x02, 0x9b}, {0xae, 0x80}, + {0x03, 0x04}, }, + { {0x9b, 0x9b}, }, + { {0x02, 0x03}, {0xad, 0x9b}, {0x01, 0x80}, {0xa0, 0xb0}, }, + { {0x04, 0x05}, {0x80, 0x9b}, {0xb1, 0xb2}, {0xa0, 0xb0}, {0xb9, 0x01}, + {0x02, 0x03}, }, + { {0x02, 0x03}, {0xb1, 0xba}, {0x01, 0xb0}, {0x9b, 0x80}, }, + { {0x80, 0x01}, {0xb0, 0x9b}, }, + { {0x9b, 0xb8}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0xb0}, }, + { {0x9b, 0xa0}, }, + { {0x02, 0x03}, {0xb1, 0xb3}, {0xb9, 0xb0}, {0x01, 0x9b}, }, + { {0x9b, 0xa0}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x80}, }, + { {0x9b, 0x9b}, }, + { {0x13, 0x14}, {0xaa, 0xad}, {0xae, 0xf6}, {0xe7, 0xf4}, {0xe2, 0xe9}, + {0x01, 0x02}, {0xc2, 0xf0}, {0x9b, 0xf3}, {0xe3, 0xe6}, {0xf7, 0x03}, + {0xf5, 0x04}, {0x05, 0x06}, {0xf2, 0x07}, {0x08, 0x09}, {0x0a, 0x0b}, + {0x0c, 0xe4}, {0xa0, 0x0d}, {0xec, 0xee}, {0x0e, 0xed}, {0x0f, 0x10}, + {0x11, 0x12}, }, + { {0x08, 0x09}, {0xc1, 0xd3}, {0x9b, 0x01}, {0xc3, 0x02}, {0xe9, 0xec}, + {0x03, 0xf2}, {0xf5, 0x04}, {0xef, 0xe1}, {0x05, 0xe5}, {0x06, 0x07}, }, + { {0x0b, 0x0c}, {0xc1, 0xf9}, {0x01, 0xc2}, {0xcf, 0xe5}, {0xf5, 0x9b}, + {0xe9, 0x02}, {0xa0, 0x03}, {0x04, 0x05}, {0xf2, 0x06}, {0xec, 0x07}, + {0xe1, 0x08}, {0x09, 0xe8}, {0x0a, 0xef}, }, + { {0x05, 0x06}, {0xf9, 0x9b}, {0x01, 0xf5}, {0x02, 0xf2}, {0xe9, 0xe5}, + {0xef, 0x03}, {0xe1, 0x04}, }, + { {0x0a, 0x0b}, {0xf1, 0xf5}, {0xf3, 0x01}, {0xed, 0xf9}, {0xc3, 0x02}, + {0xec, 0xee}, {0xe4, 0xf8}, {0x03, 0x9b}, {0xf6, 0x04}, {0x05, 0xe1}, + {0x06, 0x07}, {0x08, 0x09}, }, + { {0x07, 0x08}, {0xa0, 0x9b}, {0xcc, 0x01}, {0xe5, 0x02}, {0xec, 0xf5}, + {0xef, 0x03}, {0xe9, 0xf2}, {0x04, 0x05}, {0xe1, 0x06}, }, + { {0x09, 0x0a}, {0xae, 0xec}, {0xf9, 0xc1}, {0xe8, 0x01}, {0x9b, 0x02}, + {0x03, 0x04}, {0xe1, 0xf5}, {0xe9, 0x05}, {0xe5, 0x06}, {0xf2, 0xef}, + {0x07, 0x08}, }, + { {0xef, 0x05}, {0x80, 0x9b}, {0xf5, 0x01}, {0x02, 0xe9}, {0xe1, 0x03}, + {0xe5, 0x04}, }, + { {0xee, 0x0b}, {0xba, 0xd4}, {0xae, 0xf2}, {0xe3, 0x01}, {0xa0, 0x02}, + {0x80, 0x9b}, {0xed, 0x03}, {0xc9, 0xf3}, {0xf4, 0x04}, {0x05, 0x06}, + {0x07, 0x08}, {0x09, 0x0a}, }, + { {0x02, 0x03}, {0x9b, 0xf5}, {0x01, 0xe1}, {0xef, 0xe5}, }, + { {0x05, 0xe9}, {0xe1, 0xef}, {0xf5, 0xee}, {0x9b, 0xe5}, {0x01, 0x02}, + {0x03, 0x04}, }, + { {0x04, 0x05}, {0xa0, 0x9b}, {0x01, 0xf5}, {0x02, 0xe5}, {0xef, 0x03}, + {0xe1, 0xe9}, }, + { {0x08, 0x09}, {0xaa, 0xd4}, {0x01, 0x9b}, {0xe3, 0x02}, {0xf2, 0x03}, + {0xe5, 0x04}, {0xf5, 0xf9}, {0xe9, 0x05}, {0xef, 0x06}, {0x07, 0xe1}, }, + { {0xe5, 0x08}, {0xce, 0xa0}, {0xc6, 0xf5}, {0x01, 0x02}, {0x9b, 0xc2}, + {0x03, 0xe1}, {0x04, 0xef}, {0x05, 0xe9}, {0x06, 0x07}, }, + { {0x09, 0x0a}, {0xe4, 0xf3}, {0xe6, 0xf6}, {0xf7, 0xf0}, {0xf2, 0x01}, + {0xec, 0x02}, {0x03, 0xa0}, {0x9b, 0x04}, {0x05, 0xf5}, {0x06, 0x07}, + {0xee, 0x08}, }, + { {0x0b, 0x0c}, {0xa0, 0xf3}, {0xf9, 0xae}, {0xd2, 0xc7}, {0x01, 0x9b}, + {0x02, 0xf5}, {0x03, 0x04}, {0x05, 0xe9}, {0xec, 0x06}, {0xe5, 0x07}, + {0xef, 0x08}, {0xe1, 0x09}, {0xf2, 0x0a}, }, + { {0x01, 0xf5}, {0x9b, 0xd6}, }, + { {0x04, 0x05}, {0xe8, 0x9b}, {0x01, 0xf5}, {0x02, 0xe1}, {0xe9, 0xef}, + {0x03, 0xe5}, }, + { {0x10, 0x11}, {0xaa, 0xec}, {0xf1, 0xae}, {0xa0, 0xf7}, {0xed, 0xee}, + {0x01, 0x02}, {0x9b, 0xeb}, {0x03, 0x04}, {0x05, 0x06}, {0xe3, 0x07}, + {0xef, 0x08}, {0xe9, 0xf5}, {0x09, 0xe1}, {0xe5, 0xf0}, {0xe8, 0x0a}, + {0x0b, 0x0c}, {0x0d, 0xf4}, {0x0e, 0x0f}, }, + { {0xe8, 0x0a}, {0xad, 0xce}, {0x9b, 0x01}, {0xd6, 0x02}, {0xf5, 0xf7}, + {0x03, 0x04}, {0xe1, 0xe5}, {0xe9, 0x05}, {0xf2, 0x06}, {0xef, 0x07}, + {0x08, 0x09}, }, + { {0xee, 0x03}, {0xec, 0xae}, {0x01, 0x9b}, {0x02, 0xf0}, }, + { {0x06, 0xe9}, {0xa0, 0xc3}, {0xef, 0x9b}, {0xe5, 0x01}, {0x80, 0x02}, + {0x03, 0xe1}, {0x04, 0x05}, }, + { {0x06, 0x07}, {0xc6, 0xd7}, {0x01, 0x9b}, {0xf2, 0x02}, {0x03, 0xe8}, + {0xe5, 0xe1}, {0x04, 0xe9}, {0xef, 0x05}, }, + { {0x9b, 0x9b}, }, + { {0x02, 0xef}, {0xe1, 0x9b}, {0x01, 0xe5}, }, + { {0x01, 0xef}, {0x9b, 0xe1}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x19, 0x1a}, {0x9b, 0xba}, {0xe5, 0xea}, {0xf8, 0x01}, {0x02, 0xe6}, + {0xa7, 0x03}, {0xfa, 0xe8}, {0x04, 0xf7}, {0x05, 0xf5}, {0xe2, 0x06}, + {0xeb, 0x07}, {0xf0, 0x08}, {0x80, 0xf6}, {0xe7, 0x09}, {0xe4, 0x0a}, + {0xa0, 0xe9}, {0x0b, 0xe3}, {0xf9, 0x0c}, {0x0d, 0xed}, {0x0e, 0x0f}, + {0xf3, 0x10}, {0x11, 0xec}, {0x12, 0xf4}, {0xf2, 0x13}, {0xee, 0x14}, + {0x15, 0x16}, {0x17, 0x18}, }, + { {0x0a, 0x0b}, {0xf3, 0x9b}, {0xf5, 0xe2}, {0x01, 0x80}, {0xa0, 0x02}, + {0xe5, 0xf2}, {0xe9, 0x03}, {0xec, 0x04}, {0xf9, 0x05}, {0xef, 0x06}, + {0xe1, 0x07}, {0x08, 0x09}, }, + { {0x10, 0x11}, {0xc3, 0xcc}, {0xc7, 0x9b}, {0xe3, 0x01}, {0x80, 0xec}, + {0xf9, 0x02}, {0xf3, 0x03}, {0xf5, 0x04}, {0x05, 0xf2}, {0x06, 0xe9}, + {0xa0, 0x07}, {0x08, 0xef}, {0xf4, 0x09}, {0x0a, 0xe1}, {0x0b, 0xe8}, + {0xeb, 0xe5}, {0x0c, 0x0d}, {0x0e, 0x0f}, }, + { {0x0e, 0x0f}, {0xae, 0xf5}, {0xf7, 0x01}, {0xec, 0x02}, {0xe4, 0xe7}, + {0xf2, 0x03}, {0x9b, 0xef}, {0x04, 0xf6}, {0x05, 0x06}, {0xf9, 0xf3}, + {0x07, 0xe9}, {0xe1, 0x08}, {0x09, 0x80}, {0x0a, 0x0b}, {0xe5, 0x0c}, + {0x0d, 0xa0}, }, + { {0x1e, 0x1f}, {0x9b, 0xa1}, {0xad, 0xe8}, {0xea, 0xf1}, {0xf5, 0xfa}, + {0x01, 0x02}, {0x03, 0x04}, {0xba, 0xf8}, {0xa7, 0xe2}, {0xe9, 0x05}, + {0x06, 0x07}, {0xe6, 0xed}, {0xe7, 0xeb}, {0x08, 0x09}, {0xf6, 0xf0}, + {0x0a, 0xef}, {0x0b, 0xe3}, {0x0c, 0x0d}, {0x0e, 0xf9}, {0x0f, 0xe4}, + {0xec, 0x10}, {0xe5, 0x11}, {0xf4, 0xf7}, {0x12, 0x13}, {0xe1, 0x14}, + {0x15, 0x16}, {0xee, 0xf3}, {0x17, 0x80}, {0x18, 0x19}, {0xf2, 0x1a}, + {0x1b, 0xa0}, {0x1c, 0x1d}, }, + { {0xa0, 0x0b}, {0xf5, 0x9b}, {0x01, 0xec}, {0xf3, 0xf2}, {0x80, 0xe1}, + {0x02, 0x03}, {0xf4, 0xe9}, {0xef, 0xe6}, {0x04, 0x05}, {0x06, 0x07}, + {0xe5, 0x08}, {0x09, 0x0a}, }, + { {0x0f, 0x10}, {0xba, 0xf9}, {0xa7, 0xf4}, {0x9b, 0x01}, {0xe7, 0xec}, + {0x02, 0xee}, {0x03, 0xef}, {0xf5, 0x04}, {0xf2, 0x05}, {0x06, 0xe9}, + {0x07, 0xf3}, {0xe1, 0x08}, {0x09, 0x0a}, {0x0b, 0xe5}, {0x80, 0x0c}, + {0xe8, 0xa0}, {0x0d, 0x0e}, }, + { {0xe5, 0x0d}, {0xe2, 0xf5}, {0xf7, 0x9b}, {0xec, 0x01}, {0xf9, 0xee}, + {0x02, 0x03}, {0x04, 0xf2}, {0x05, 0x80}, {0x06, 0xa0}, {0xe1, 0xef}, + {0x07, 0xf4}, {0xe9, 0x08}, {0x09, 0x0a}, {0x0b, 0x0c}, }, + { {0x15, 0x16}, {0xa1, 0xf8}, {0xe9, 0xeb}, {0x01, 0x80}, {0x9b, 0xfa}, + {0xe2, 0x02}, {0x03, 0x04}, {0xa0, 0xf0}, {0x05, 0x06}, {0x07, 0xe1}, + {0x08, 0xe6}, {0xf2, 0xed}, {0xf6, 0x09}, {0xe4, 0x0a}, {0xef, 0xf4}, + {0xec, 0xf3}, {0xe7, 0xe5}, {0x0b, 0xe3}, {0x0c, 0x0d}, {0x0e, 0x0f}, + {0x10, 0x11}, {0x12, 0x13}, {0xee, 0x14}, }, + { {0xef, 0x01}, {0x9b, 0xe1}, }, + { {0x0b, 0x0c}, {0xd4, 0xef}, {0xe6, 0xec}, {0xf7, 0xe1}, {0x01, 0xba}, + {0x02, 0x9b}, {0xf9, 0x03}, {0x04, 0x05}, {0xf3, 0x06}, {0x07, 0x08}, + {0xe9, 0xa0}, {0x09, 0x80}, {0xe5, 0x0a}, }, + { {0x15, 0x16}, {0xa7, 0xba}, {0xe3, 0xf7}, {0xf2, 0xad}, {0xe2, 0x01}, + {0x02, 0x9b}, {0xe6, 0x03}, {0xed, 0xf6}, {0x04, 0xeb}, {0x05, 0xf4}, + {0x06, 0x07}, {0x08, 0xf3}, {0x09, 0xf5}, {0x0a, 0xef}, {0x0b, 0x0c}, + {0x80, 0xf9}, {0xe1, 0x0d}, {0xe4, 0xe9}, {0xa0, 0x0e}, {0x0f, 0xec}, + {0xe5, 0x10}, {0x11, 0x12}, {0x13, 0x14}, }, + { {0x0a, 0x0b}, {0xf9, 0x9b}, {0xf5, 0xf3}, {0x01, 0x02}, {0xe2, 0xed}, + {0x80, 0x03}, {0xf0, 0xef}, {0x04, 0xa0}, {0x05, 0xe9}, {0x06, 0xe1}, + {0x07, 0x08}, {0x09, 0xe5}, }, + { {0x18, 0x19}, {0xe2, 0xea}, {0xf2, 0xe8}, {0xec, 0xed}, {0xfa, 0x9b}, + {0x01, 0xf5}, {0x02, 0x03}, {0xf6, 0x04}, {0xba, 0xe6}, {0x05, 0x06}, + {0xeb, 0xef}, {0x07, 0xa7}, {0xf9, 0x08}, {0x09, 0x0a}, {0x0b, 0xe3}, + {0x0c, 0xee}, {0xe1, 0x0d}, {0xf3, 0x0e}, {0xe9, 0x0f}, {0x10, 0xf4}, + {0x80, 0xe4}, {0xe5, 0x11}, {0x12, 0xe7}, {0xa0, 0x13}, {0x14, 0x15}, + {0x16, 0x17}, }, + { {0x1b, 0x1c}, {0xae, 0xfa}, {0xbf, 0x01}, {0xa7, 0x9b}, {0x02, 0xe9}, + {0xf8, 0xf9}, {0x03, 0xe5}, {0xe8, 0x04}, {0xe1, 0xeb}, {0x05, 0xe2}, + {0x06, 0x07}, {0xe3, 0x08}, {0xe7, 0xf4}, {0x09, 0x80}, {0xf6, 0xf0}, + {0x0a, 0xe4}, {0x0b, 0xf3}, {0xf7, 0x0c}, {0x0d, 0xef}, {0xec, 0xa0}, + {0x0e, 0x0f}, {0xed, 0xe6}, {0x10, 0xf5}, {0x11, 0x12}, {0x13, 0x14}, + {0x15, 0xf2}, {0x16, 0xee}, {0x17, 0x18}, {0x19, 0x1a}, }, + { {0x0e, 0x0f}, {0xed, 0xa7}, {0x9b, 0xe4}, {0x01, 0xf9}, {0xf3, 0xf2}, + {0xf4, 0x02}, {0xe8, 0x03}, {0xec, 0xf0}, {0x04, 0xe1}, {0xe9, 0x05}, + {0x06, 0x80}, {0xa0, 0x07}, {0x08, 0x09}, {0x0a, 0xe5}, {0xef, 0x0b}, + {0x0c, 0x0d}, }, + { {0x9b, 0xf5}, }, + { {0x18, 0x19}, {0xba, 0xac}, {0xf6, 0x9b}, {0xf0, 0xe2}, {0x01, 0xe6}, + {0x02, 0xa7}, {0xae, 0xe7}, {0x03, 0xe3}, {0xf5, 0x04}, {0xed, 0x05}, + {0x06, 0x07}, {0xeb, 0x08}, {0x09, 0xee}, {0xf2, 0x0a}, {0xe4, 0x0b}, + {0xf9, 0xec}, {0x0c, 0x0d}, {0xf4, 0x80}, {0x0e, 0xef}, {0xf3, 0xa0}, + {0xe1, 0x0f}, {0xe9, 0x10}, {0x11, 0xe5}, {0x12, 0x13}, {0x14, 0x15}, + {0x16, 0x17}, }, + { {0x19, 0x1a}, {0xa7, 0xac}, {0xbf, 0xc3}, {0xc8, 0xe4}, {0xe6, 0xed}, + {0xf2, 0xae}, {0xec, 0xee}, {0xf9, 0x01}, {0x02, 0x03}, {0x04, 0xba}, + {0x05, 0x9b}, {0xf5, 0x06}, {0x07, 0x08}, {0x09, 0xeb}, {0xf0, 0x0a}, + {0x0b, 0x0c}, {0xe1, 0xe3}, {0x0d, 0xe8}, {0x0e, 0x0f}, {0xef, 0x10}, + {0x11, 0xf3}, {0x12, 0xe9}, {0x13, 0xe5}, {0x14, 0x15}, {0xf4, 0x16}, + {0x17, 0xa0}, {0x18, 0x80}, }, + { {0x14, 0x15}, {0xba, 0xbf}, {0xe4, 0xf7}, {0x9b, 0xa7}, {0x01, 0xee}, + {0x02, 0x03}, {0x04, 0xe3}, {0xe2, 0xed}, {0x05, 0xf9}, {0x06, 0xf4}, + {0x07, 0xec}, {0x08, 0xf5}, {0xf2, 0x09}, {0xe1, 0xf3}, {0x0a, 0xef}, + {0x0b, 0x0c}, {0x0d, 0xe9}, {0x80, 0xe5}, {0x0e, 0xa0}, {0x0f, 0xe8}, + {0x10, 0x11}, {0x12, 0x13}, }, + { {0x11, 0x12}, {0xeb, 0xfa}, {0x80, 0xe6}, {0x9b, 0x01}, {0xa0, 0x02}, + {0x03, 0xe9}, {0xe1, 0x04}, {0xe4, 0xf0}, {0xed, 0xe2}, {0xe3, 0xe7}, + {0xec, 0x05}, {0xe5, 0x06}, {0x07, 0x08}, {0x09, 0xf4}, {0x0a, 0x0b}, + {0x0c, 0xf3}, {0xee, 0x0d}, {0x0e, 0xf2}, {0x0f, 0x10}, }, + { {0x04, 0xe5}, {0xf3, 0xef}, {0x9b, 0x01}, {0xe1, 0x02}, {0x03, 0xe9}, }, + { {0x0b, 0x0c}, {0xa7, 0xe2}, {0xec, 0xe3}, {0xf2, 0x01}, {0x9b, 0x02}, + {0x03, 0x04}, {0xe9, 0xef}, {0xee, 0xe5}, {0xe1, 0x80}, {0x05, 0xa0}, + {0x06, 0x07}, {0x08, 0x09}, {0xf3, 0x0a}, }, + { {0x05, 0x06}, {0x9b, 0xa0}, {0xe1, 0xe5}, {0xe9, 0x01}, {0x80, 0xf0}, + {0x02, 0xf4}, {0x03, 0x04}, }, + { {0xa0, 0x13}, {0xe3, 0xad}, {0xe4, 0xe9}, {0xee, 0xef}, {0xf0, 0xf4}, + {0xf6, 0xa1}, {0xe1, 0xed}, {0x01, 0xe2}, {0x02, 0x03}, {0x04, 0xa7}, + {0x05, 0x06}, {0xf7, 0x07}, {0x9b, 0xec}, {0x08, 0xe5}, {0x09, 0x0a}, + {0x0b, 0x0c}, {0x0d, 0x0e}, {0xf3, 0x0f}, {0x10, 0x11}, {0x80, 0x12}, }, + { {0x05, 0x06}, {0xe5, 0xfa}, {0xa0, 0xf9}, {0x9b, 0x01}, {0x80, 0xe9}, + {0x02, 0xe1}, {0x03, 0x04}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, + { {0x9b, 0x9b}, }, +}; + + + +static inline void huffbuff_init(struct huffbuff *hbuf, uint8_t *buf, uint32_t buf_len) +{ + memset(hbuf, 0, sizeof(struct huffbuff)); + hbuf->buf = buf; + hbuf->buf_len = buf_len; +} + +static inline int huffbuff_bits(struct huffbuff *hbuf, uint8_t nbits) +{ + uint8_t result = 0; + + if (nbits > 8) + return -1; + + while(nbits--) { + if (hbuf->cur_byte >= hbuf->buf_len) { + return -1; + } + + result <<= 1; + if (hbuf->buf[hbuf->cur_byte] & (0x80 >> hbuf->cur_bit)) + result |= 1; + + if (++hbuf->cur_bit > 7) { + hbuf->cur_byte++; + hbuf->cur_bit = 0; + } + } + + return result; +} + +static inline int append_unicode_char(uint8_t **destbuf, size_t *destbuflen, size_t *destbufpos, + uint32_t c) +{ + uint8_t tmp[3]; + int tmplen = 0; + + // encode the unicode character first of all + if (c < 0x80) { + tmp[0] = c; + tmplen = 1; + } else if (c < 0x800) { + tmp[0] = 0xc0 | ((c >> 6) & 0x1f); + tmp[1] = 0x80 | (c & 0x3f); + tmplen = 2; + } else if (c < 0x10000) { + tmp[0] = 0xe0 | ((c >> 12) & 0x0f); + tmp[1] = 0x80 | ((c >> 6) & 0x3f); + tmp[2] = 0x80 | (c & 0x3f); + tmplen = 3; + } else { + return -1; + } + + // do we have enough buffer space? + if ((*destbufpos + tmplen) >= *destbuflen) { + uint8_t *new_dest = realloc(*destbuf, *destbuflen + DEST_ALLOC_DELTA); + if (new_dest == NULL) + return -ENOMEM; + *destbuf = new_dest; + *destbuflen += DEST_ALLOC_DELTA; + } + + // copy it into position + memcpy(*destbuf + *destbufpos, tmp, tmplen); + *destbufpos += tmplen; + + return 0; +} + +static inline int unicode_decode(uint8_t *srcbuf, size_t srcbuflen, int mode, + uint8_t **destbuf, size_t *destbuflen, size_t *destbufpos) +{ + size_t i; + uint32_t msb = mode << 8; + + for(i=0; i< srcbuflen; i++) { + if (append_unicode_char(destbuf, destbuflen, destbufpos, msb + srcbuf[i])) + return -1; + } + + return *destbufpos; +} + +static int huffman_decode_uncompressed(struct huffbuff *hbuf, + uint8_t **destbuf, size_t *destbuflen, size_t *destbufpos) +{ + int c; + + while(hbuf->cur_byte < hbuf->buf_len) { + // get next byte + if ((c = huffbuff_bits(hbuf, 8)) < 0) + return -1; + + switch(c) { + case HUFFSTRING_END: + return 0; + + case HUFFSTRING_ESCAPE: + return HUFFSTRING_ESCAPE; + + default: + if (append_unicode_char(destbuf, destbuflen, destbufpos, c)) + return -1; + + // if it is 7 bit, we swap back to the compressed context + if ((c & 0x80) == 0) + return c; + + // characters following an 8 bit uncompressed char are uncompressed as well + break; + } + } + + // ran out of string; pretend we saw an end of string char + return HUFFSTRING_END; +} + +static int huffman_decode(uint8_t *src, size_t srclen, + uint8_t **destbuf, size_t *destbuflen, size_t *destbufpos, + struct hufftree_entry hufftree[][128]) +{ + struct huffbuff hbuf; + int bit; + struct hufftree_entry *tree = hufftree[0]; + uint8_t treeidx = 0; + uint8_t treeval; + int tmp; + + huffbuff_init(&hbuf, src, srclen); + + while(hbuf.cur_byte < hbuf.buf_len) { + // get the next bit + if ((bit = huffbuff_bits(&hbuf, 1)) < 0) + return *destbufpos; + + if (!bit) { + treeval = tree[treeidx].left_idx; + } else { + treeval = tree[treeidx].right_idx; + } + + if (treeval & HUFFTREE_LITERAL_MASK) { + switch(treeval & ~HUFFTREE_LITERAL_MASK) { + case HUFFSTRING_END: + return 0; + + case HUFFSTRING_ESCAPE: + if ((tmp = + huffman_decode_uncompressed(&hbuf, + destbuf, destbuflen, destbufpos)) < 0) + return tmp; + if (tmp == 0) + return *destbufpos; + + tree = hufftree[tmp]; + treeidx = 0; + break; + + default: + // stash it + if (append_unicode_char(destbuf, destbuflen, destbufpos, + treeval & ~HUFFTREE_LITERAL_MASK)) + return -1; + tree = hufftree[treeval & ~HUFFTREE_LITERAL_MASK]; + treeidx = 0; + break; + } + } else { + treeidx = treeval; + } + } + + return *destbufpos; +} + +int atsc_text_segment_decode(struct atsc_text_string_segment *segment, + uint8_t **destbuf, size_t *destbufsize, size_t *destbufpos) +{ + if (segment->mode > ATSC_TEXT_SEGMENT_MODE_UNICODE_RANGE_MAX) + return -1; + + // mode==0 MUST be used for compressed text + if ((segment->mode) && (segment->compression_type)) + return -1; + + uint8_t *buf = atsc_text_string_segment_bytes(segment); + + switch(segment->compression_type) { + case ATSC_TEXT_COMPRESS_NONE: + return unicode_decode(buf, segment->number_bytes, segment->mode, + destbuf, destbufsize, destbufpos); + + case ATSC_TEXT_COMPRESS_PROGRAM_TITLE: + return huffman_decode(buf, segment->number_bytes, + destbuf, destbufsize, destbufpos, + program_title_hufftree); + + case ATSC_TEXT_COMPRESS_PROGRAM_DESCRIPTION: + return huffman_decode(buf, segment->number_bytes, + destbuf, destbufsize, destbufpos, + program_description_hufftree); + } + + return -1; +} diff --git a/lib/libucsi/atsc/caption_service_descriptor.h b/lib/libucsi/atsc/caption_service_descriptor.h new file mode 100644 index 0000000..29d1794 --- /dev/null +++ b/lib/libucsi/atsc/caption_service_descriptor.h @@ -0,0 +1,137 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_ATSC_CAPTION_SERVICE_DESCRIPTOR +#define _UCSI_ATSC_CAPTION_SERVICE_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +/** + * atsc_caption_service_descriptor structure. + */ +struct atsc_caption_service_descriptor { + struct descriptor d; + + EBIT2(uint8_t reserved : 3; , + uint8_t number_of_services : 5; ); + /* struct atsc_caption_service_entry entries[] */ +} __ucsi_packed; + +/** + * An entry in the entries field of a atsc_caption_service_descriptor. + */ +struct atsc_caption_service_entry { + iso639lang_t language_code; + EBIT3(uint8_t digital_cc : 1; , + uint8_t reserved : 1; , + uint8_t value : 6; ); + EBIT3(uint16_t easy_reader : 1; , + uint16_t wide_aspect_ratio : 1; , + uint16_t reserved1 :14; ); +} __ucsi_packed; + +/** + * Process an atsc_caption_service_descriptor. + * + * @param d Generic descriptor pointer. + * @return atsc_caption_service_descriptor pointer, or NULL on error. + */ +static inline struct atsc_caption_service_descriptor* + atsc_caption_service_descriptor_codec(struct descriptor* d) +{ + struct atsc_caption_service_descriptor *ret = + (struct atsc_caption_service_descriptor *) d; + uint8_t *buf = (uint8_t*) d + 2; + int pos = 0; + int idx; + + if (d->len < 1) + return NULL; + pos++; + + for(idx = 0; idx < ret->number_of_services; idx++) { + if (d->len < (pos + sizeof(struct atsc_caption_service_entry))) + return NULL; + + bswap16(buf+pos+4); + + pos += sizeof(struct atsc_caption_service_entry); + } + + return (struct atsc_caption_service_descriptor*) d; +} + +/** + * Iterator for entries field of a atsc_caption_service_descriptor. + * + * @param d atsc_caption_service_descriptor pointer. + * @param pos Variable holding a pointer to the current atsc_caption_service_entry. + * @param idx Field iterator integer. + */ +#define atsc_caption_service_descriptor_entries_for_each(d, pos, idx) \ + for ((pos) = atsc_caption_service_descriptor_entries_first(d), idx=0; \ + (pos); \ + (pos) = atsc_caption_service_descriptor_entries_next(d, pos, ++idx)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct atsc_caption_service_entry* + atsc_caption_service_descriptor_entries_first(struct atsc_caption_service_descriptor *d) +{ + if (d->number_of_services == 0) + return NULL; + + return (struct atsc_caption_service_entry *) + ((uint8_t*) d + sizeof(struct atsc_caption_service_descriptor)); +} + +static inline struct atsc_caption_service_entry* + atsc_caption_service_descriptor_entries_next(struct atsc_caption_service_descriptor *d, + struct atsc_caption_service_entry *pos, + int idx) +{ + if (idx >= d->number_of_services) + return NULL; + + return (struct atsc_caption_service_entry *) + ((uint8_t *) pos + sizeof(struct atsc_caption_service_entry)); +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/atsc/component_name_descriptor.h b/lib/libucsi/atsc/component_name_descriptor.h new file mode 100644 index 0000000..3b9cab7 --- /dev/null +++ b/lib/libucsi/atsc/component_name_descriptor.h @@ -0,0 +1,92 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_ATSC_COMPONENT_NAME_DESCRIPTOR +#define _UCSI_ATSC_COMPONENT_NAME_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> +#include <libucsi/atsc/types.h> + +/** + * atsc_component_name_descriptor structure. + */ +struct atsc_component_name_descriptor { + struct descriptor d; + + /* struct atsc_text text[] */ +} __ucsi_packed; + +/** + * Process an atsc_component_name_descriptor. + * + * @param d Generic descriptor pointer. + * @return atsc_component_name_descriptor pointer, or NULL on error. + */ +static inline struct atsc_component_name_descriptor* + atsc_component_name_descriptor_codec(struct descriptor* d) +{ + uint8_t *txt = ((uint8_t*) d) + sizeof(struct atsc_component_name_descriptor); + + if (atsc_text_validate(txt, d->len)) + return NULL; + + return (struct atsc_component_name_descriptor*) d; +} + +/** + * Accessor for the text field of an atsc_component_name_descriptor. + * + * @param d atsc_component_name_descriptor pointer. + * @return Pointer to the atsc_text data, or NULL on error. + */ +static inline struct atsc_text* + atsc_component_name_descriptor_text(struct atsc_component_name_descriptor *d) +{ + uint8_t *txt = ((uint8_t*) d) + sizeof(struct atsc_component_name_descriptor); + + return (struct atsc_text*) txt; +} + +/** + * Accessor for the length of the text field of an atsc_component_name_descriptor_text. + * + * @param d atsc_component_name_descriptor pointer. + * @return The length in bytes. + */ +static inline int + atsc_component_name_descriptor_text_length(struct atsc_component_name_descriptor *d) +{ + return d->d.len; +} + + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/atsc/content_advisory_descriptor.h b/lib/libucsi/atsc/content_advisory_descriptor.h new file mode 100644 index 0000000..da19813 --- /dev/null +++ b/lib/libucsi/atsc/content_advisory_descriptor.h @@ -0,0 +1,235 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_ATSC_CONTENT_ADVISORY_DESCRIPTOR +#define _UCSI_ATSC_CONTENT_ADVISORY_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +/** + * atsc_content_advisory_descriptor structure. + */ +struct atsc_content_advisory_descriptor { + struct descriptor d; + + EBIT2(uint8_t reserved : 2; , + uint8_t rating_region_count : 6; ); + /* struct atsc_content_advisory_entry entries[] */ +} __ucsi_packed; + +/** + * An entry in the entries field of a atsc_content_advisory_descriptor. + */ +struct atsc_content_advisory_entry { + uint8_t rating_region; + uint8_t rated_dimensions; + /* struct atsc_content_advisory_entry_dimension dimensions[] */ + /* struct atsc_content_advisory_entry_part2 part2 */ +} __ucsi_packed; + +/** + * An entry in the entries field of a atsc_content_advisory_descriptor. + */ +struct atsc_content_advisory_entry_dimension { + uint8_t rating_dimension_j; + EBIT2(uint8_t reserved : 4; , + uint8_t rating_value : 4; ); +} __ucsi_packed; + +/** + * Part2 of an atsc_content_advisory_entry. + */ +struct atsc_content_advisory_entry_part2 { + uint8_t rating_description_length; + /* struct atsc_text description */ +} __ucsi_packed; + +/** + * Process an atsc_content_advisory_descriptor. + * + * @param d Generic descriptor pointer. + * @return atsc_content_advisory_descriptor pointer, or NULL on error. + */ +static inline struct atsc_content_advisory_descriptor* + atsc_content_advisory_descriptor_codec(struct descriptor* d) +{ + struct atsc_content_advisory_descriptor *ret = + (struct atsc_content_advisory_descriptor *) d; + uint8_t *buf = (uint8_t*) d + 2; + int pos = 0; + int idx; + + if (d->len < 1) + return NULL; + pos++; + + for(idx = 0; idx < ret->rating_region_count; idx++) { + if (d->len < (pos + sizeof(struct atsc_content_advisory_entry))) + return NULL; + struct atsc_content_advisory_entry *entry = + (struct atsc_content_advisory_entry *) (buf + pos); + pos += sizeof(struct atsc_content_advisory_entry); + + if (d->len < (pos + (sizeof(struct atsc_content_advisory_entry_dimension) * + entry->rated_dimensions))) + return NULL; + pos += sizeof(struct atsc_content_advisory_entry_dimension) * entry->rated_dimensions; + + if (d->len < (pos + sizeof(struct atsc_content_advisory_entry_part2))) + return NULL; + struct atsc_content_advisory_entry_part2 *part2 = + (struct atsc_content_advisory_entry_part2 *) (buf + pos); + pos += sizeof(struct atsc_content_advisory_entry_part2); + + if (d->len < (pos + part2->rating_description_length)) + return NULL; + + if (atsc_text_validate(buf+pos, part2->rating_description_length)) + return NULL; + + pos += part2->rating_description_length; + } + + return (struct atsc_content_advisory_descriptor*) d; +} + +/** + * Iterator for entries field of a atsc_content_advisory_descriptor. + * + * @param d atsc_content_advisory_descriptor pointer. + * @param pos Variable holding a pointer to the current atsc_content_advisory_entry. + * @param idx Integer used to count which entry we are in. + */ +#define atsc_content_advisory_descriptor_entries_for_each(d, pos, idx) \ + for ((pos) = atsc_content_advisory_descriptor_entries_first(d), idx=0; \ + (pos); \ + (pos) = atsc_content_advisory_descriptor_entries_next(d, pos, ++idx)) + +/** + * Iterator for dimensions field of a atsc_content_advisory_entry. + * + * @param d atsc_content_advisory_entry pointer. + * @param pos Variable holding a pointer to the current atsc_content_advisory_entry_dimension. + * @param idx Integer used to count which dimension we are in. + */ +#define atsc_content_advisory_entry_dimensions_for_each(d, pos, idx) \ + for ((pos) = atsc_content_advisory_entry_dimensions_first(d), idx=0; \ + (pos); \ + (pos) = atsc_content_advisory_entry_dimensions_next(d, pos, ++idx)) + +/** + * Accessor for the part2 field of an atsc_content_advisory_entry. + * + * @param entry atsc_content_advisory_entry pointer. + * @return struct atsc_content_advisory_entry_part2 pointer. + */ +static inline struct atsc_content_advisory_entry_part2 * + atsc_content_advisory_entry_part2(struct atsc_content_advisory_entry *entry) +{ + int pos = sizeof(struct atsc_content_advisory_entry); + pos += entry->rated_dimensions * sizeof(struct atsc_content_advisory_entry_dimension); + + return (struct atsc_content_advisory_entry_part2 *) (((uint8_t*) entry) + pos); +} + + +/** + * Accessor for the description field of an atsc_content_advisory_entry_part2. + * + * @param part2 atsc_content_advisory_entry_part2 pointer. + * @return Pointer to the atsc_text data, or NULL on error. + */ +static inline struct atsc_text* + atsc_content_advisory_entry_part2_description(struct atsc_content_advisory_entry_part2 *part2) +{ + uint8_t *txt = ((uint8_t*) part2) + sizeof(struct atsc_content_advisory_entry_part2); + + return (struct atsc_text *) txt; +} + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct atsc_content_advisory_entry* + atsc_content_advisory_descriptor_entries_first(struct atsc_content_advisory_descriptor *d) +{ + if (d->rating_region_count == 0) + return NULL; + + return (struct atsc_content_advisory_entry *) + ((uint8_t*) d + sizeof(struct atsc_content_advisory_descriptor)); +} + +static inline struct atsc_content_advisory_entry* + atsc_content_advisory_descriptor_entries_next(struct atsc_content_advisory_descriptor *d, + struct atsc_content_advisory_entry *pos, + int idx) +{ + if (idx >= d->rating_region_count) + return NULL; + struct atsc_content_advisory_entry_part2 *part2 = + atsc_content_advisory_entry_part2(pos); + + return (struct atsc_content_advisory_entry *) + ((uint8_t *) part2 + + sizeof(struct atsc_content_advisory_entry_part2) + + part2->rating_description_length); +} + +static inline struct atsc_content_advisory_entry_dimension* + atsc_content_advisory_entry_dimensions_first(struct atsc_content_advisory_entry *e) +{ + if (e->rated_dimensions == 0) + return NULL; + + return (struct atsc_content_advisory_entry_dimension *) + ((uint8_t*) e + sizeof(struct atsc_content_advisory_entry)); +} + +static inline struct atsc_content_advisory_entry_dimension* + atsc_content_advisory_entry_dimensions_next(struct atsc_content_advisory_entry *e, + struct atsc_content_advisory_entry_dimension *pos, + int idx) +{ + uint8_t *next = (uint8_t *) pos + sizeof(struct atsc_content_advisory_entry_dimension); + + if (idx >= e->rated_dimensions) + return NULL; + return (struct atsc_content_advisory_entry_dimension *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/atsc/cvct_section.c b/lib/libucsi/atsc/cvct_section.c new file mode 100644 index 0000000..6edbc03 --- /dev/null +++ b/lib/libucsi/atsc/cvct_section.c @@ -0,0 +1,77 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <libucsi/atsc/cvct_section.h> + +struct atsc_cvct_section *atsc_cvct_section_codec(struct atsc_section_psip *psip) +{ + uint8_t * buf = (uint8_t *) psip; + size_t pos = sizeof(struct atsc_section_psip); + size_t len = section_ext_length(&(psip->ext_head)); + int idx; + + if (len < sizeof(struct atsc_cvct_section)) + return NULL; + struct atsc_cvct_section *cvct = (struct atsc_cvct_section *) psip; + + pos++; + for(idx =0; idx < cvct->num_channels_in_section; idx++) { + if ((pos + sizeof(struct atsc_cvct_channel)) > len) + return NULL; + struct atsc_cvct_channel *channel = (struct atsc_cvct_channel *) (buf+pos); + + pos += 7*2; + + bswap32(buf+pos); + bswap32(buf+pos+4); + bswap16(buf+pos+8); + bswap16(buf+pos+10); + bswap16(buf+pos+12); + bswap16(buf+pos+14); + bswap16(buf+pos+16); + pos+=18; + + if ((pos + channel->descriptors_length) > len) + return NULL; + if (verify_descriptors(buf + pos, channel->descriptors_length)) + return NULL; + + pos += channel->descriptors_length; + } + + if ((pos + sizeof(struct atsc_cvct_section_part2)) > len) + return NULL; + struct atsc_cvct_section_part2 *part2 = (struct atsc_cvct_section_part2 *) (buf+pos); + + bswap16(buf+pos); + pos+=2; + + if ((pos + part2->descriptors_length) > len) + return NULL; + if (verify_descriptors(buf + pos, part2->descriptors_length)) + return NULL; + + pos += part2->descriptors_length; + if (pos != len) + return NULL; + + return (struct atsc_cvct_section *) psip; +} diff --git a/lib/libucsi/atsc/cvct_section.h b/lib/libucsi/atsc/cvct_section.h new file mode 100644 index 0000000..c3d418a --- /dev/null +++ b/lib/libucsi/atsc/cvct_section.h @@ -0,0 +1,228 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_ATSC_CVCT_SECTION_H +#define _UCSI_ATSC_CVCT_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/atsc/section.h> + +/** + * atsc_cvct_section structure. + */ +struct atsc_cvct_section { + struct atsc_section_psip head; + + uint8_t num_channels_in_section; + /* struct atsc_cvct_channel channels[] */ + /* struct atsc_cvct_channel_part2 part2 */ +} __ucsi_packed; + +struct atsc_cvct_channel { + uint16_t short_name[7]; // UTF-16 network ordered + EBIT4(uint32_t reserved : 4; , + uint32_t major_channel_number :10; , + uint32_t minor_channel_number :10; , + uint32_t modulation_mode : 8; ); + uint32_t carrier_frequency; + uint16_t channel_TSID; + uint16_t program_number; + EBIT8(uint16_t ETM_location : 2; , + uint16_t access_controlled : 1; , + uint16_t hidden : 1; , + uint16_t path_select : 1; , + uint16_t out_of_band : 1; , + uint16_t hide_guide : 1; , + uint16_t reserved2 : 3; , + uint16_t service_type : 6; ); + uint16_t source_id; + EBIT2(uint16_t reserved3 : 6; , + uint16_t descriptors_length :10; ); + /* struct descriptor descriptors[] */ +} __ucsi_packed; + +struct atsc_cvct_section_part2 { + EBIT2(uint16_t reserved : 6; , + uint16_t descriptors_length :10; ); + /* struct descriptor descriptors[] */ +} __ucsi_packed; + +static inline struct atsc_cvct_channel *atsc_cvct_section_channels_first(struct atsc_cvct_section *cvct); +static inline struct atsc_cvct_channel * + atsc_cvct_section_channels_next(struct atsc_cvct_section *cvct, struct atsc_cvct_channel *pos, int idx); + +/** + * Process a atsc_cvct_section. + * + * @param section Pointer to anj atsc_section_psip structure. + * @return atsc_cvct_section pointer, or NULL on error. + */ +struct atsc_cvct_section *atsc_cvct_section_codec(struct atsc_section_psip *section); + +/** + * Accessor for the transport_stream_id field of a CVCT. + * + * @param cvdt CVDT pointer. + * @return The transport_stream_id. + */ +static inline uint16_t atsc_cvct_section_transport_stream_id(struct atsc_cvct_section *cvct) +{ + return cvct->head.ext_head.table_id_ext; +} + +/** + * Iterator for the tables field in an atsc_cvct_section. + * + * @param mgt atsc_cvct_section pointer. + * @param pos Variable containing a pointer to the current atsc_cvct_channel. + * @param idx Integer used to count which table we in. + */ +#define atsc_cvct_section_channels_for_each(mgt, pos, idx) \ + for ((pos) = atsc_cvct_section_channels_first(mgt), idx=0; \ + (pos); \ + (pos) = atsc_cvct_section_channels_next(mgt, pos, ++idx)) + +/** + * Iterator for the descriptors field in a atsc_cvct_channel structure. + * + * @param table atsc_cvct_channel pointer. + * @param pos Variable containing a pointer to the current descriptor. + */ +#define atsc_cvct_channel_descriptors_for_each(table, pos) \ + for ((pos) = atsc_cvct_channel_descriptors_first(table); \ + (pos); \ + (pos) = atsc_cvct_channel_descriptors_next(table, pos)) + +/** + * Accessor for the second part of an atsc_cvct_section. + * + * @param mgt atsc_cvct_section pointer. + * @return atsc_cvct_section_part2 pointer. + */ +static inline struct atsc_cvct_section_part2 * + atsc_cvct_section_part2(struct atsc_cvct_section *mgt) +{ + int pos = sizeof(struct atsc_cvct_section); + + struct atsc_cvct_channel *cur_table; + int idx; + atsc_cvct_section_channels_for_each(mgt, cur_table, idx) { + pos += sizeof(struct atsc_cvct_channel); + pos += cur_table->descriptors_length; + } + + return (struct atsc_cvct_section_part2 *) (((uint8_t*) mgt) + pos); +} + +/** + * Iterator for the descriptors field in a atsc_cvct_section structure. + * + * @param part2 atsc_cvct_section_part2 pointer. + * @param pos Variable containing a pointer to the current descriptor. + */ +#define atsc_cvct_section_part2_descriptors_for_each(part2, pos) \ + for ((pos) = atsc_cvct_section_part2_descriptors_first(part2); \ + (pos); \ + (pos) = atsc_cvct_section_part2_descriptors_next(part2, pos)) + + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct atsc_cvct_channel * + atsc_cvct_section_channels_first(struct atsc_cvct_section *cvct) +{ + size_t pos = sizeof(struct atsc_cvct_section); + + if (cvct->num_channels_in_section == 0) + return NULL; + + return (struct atsc_cvct_channel*) (((uint8_t *) cvct) + pos); +} + +static inline struct atsc_cvct_channel * + atsc_cvct_section_channels_next(struct atsc_cvct_section *cvct, + struct atsc_cvct_channel *pos, + int idx) +{ + if (idx >= cvct->num_channels_in_section) + return NULL; + + return (struct atsc_cvct_channel *) + (((uint8_t*) pos) + sizeof(struct atsc_cvct_channel) + pos->descriptors_length); +} + +static inline struct descriptor * + atsc_cvct_channel_descriptors_first(struct atsc_cvct_channel *table) +{ + size_t pos = sizeof(struct atsc_cvct_channel); + + if (table->descriptors_length == 0) + return NULL; + + return (struct descriptor*) (((uint8_t *) table) + pos); +} + +static inline struct descriptor * + atsc_cvct_channel_descriptors_next(struct atsc_cvct_channel *table, + struct descriptor *pos) +{ + return next_descriptor((uint8_t*) table + sizeof(struct atsc_cvct_channel), + table->descriptors_length, + pos); +} + +static inline struct descriptor * + atsc_cvct_section_part2_descriptors_first(struct atsc_cvct_section_part2 *part2) +{ + size_t pos = sizeof(struct atsc_cvct_section_part2); + + if (part2->descriptors_length == 0) + return NULL; + + return (struct descriptor*) (((uint8_t *) part2) + pos); +} + +static inline struct descriptor * + atsc_cvct_section_part2_descriptors_next(struct atsc_cvct_section_part2 *part2, + struct descriptor *pos) +{ + return next_descriptor((uint8_t*) part2 + sizeof(struct atsc_cvct_section_part2), + part2->descriptors_length, + pos); +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/atsc/dcc_arriving_request_descriptor.h b/lib/libucsi/atsc/dcc_arriving_request_descriptor.h new file mode 100644 index 0000000..af76eac --- /dev/null +++ b/lib/libucsi/atsc/dcc_arriving_request_descriptor.h @@ -0,0 +1,107 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_ATSC_DCC_ARRIVING_REQUEST_DESCRIPTOR +#define _UCSI_ATSC_DCC_ARRIVING_REQUEST_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +enum atsc_dcc_arriving_request_type { + DCC_ARRIVAL_TYPE_DEFER_10SEC = 0x01, + DCC_ARRIVAL_TYPE_DEFER = 0x02, +}; + +/** + * atsc_dcc_arriving_request_descriptor structure. + */ +struct atsc_dcc_arriving_request_descriptor { + struct descriptor d; + + uint8_t dcc_arriving_request_type; + uint8_t dcc_arriving_request_text_length; + /* struct atsc_text text[] */ +} __ucsi_packed; + +/** + * Process an atsc_dcc_arriving_request_descriptor. + * + * @param d Generic descriptor pointer. + * @return atsc_dcc_arriving_request_descriptor pointer, or NULL on error. + */ +static inline struct atsc_dcc_arriving_request_descriptor* + atsc_dcc_arriving_request_descriptor_codec(struct descriptor* d) +{ + struct atsc_dcc_arriving_request_descriptor *ret = + (struct atsc_dcc_arriving_request_descriptor *) d; + + if (d->len < 2) + return NULL; + + if (d->len != 2 + ret->dcc_arriving_request_text_length) + return NULL; + + if (atsc_text_validate((uint8_t*) d + sizeof(struct atsc_dcc_arriving_request_descriptor), + ret->dcc_arriving_request_text_length)) + return NULL; + + return (struct atsc_dcc_arriving_request_descriptor*) d; +} + +/** + * Accessor for the text field of an atsc_dcc_arriving_request_descriptor. + * + * @param d atsc_dcc_arriving_request_descriptor pointer. + * @return Pointer to the atsc_text data, or NULL on error. + */ +static inline struct atsc_text* + atsc_dcc_arriving_request_descriptor_text(struct atsc_dcc_arriving_request_descriptor *d) +{ + uint8_t *txt = ((uint8_t*) d) + sizeof(struct atsc_dcc_arriving_request_descriptor); + + return (struct atsc_text*) txt; +} + +/** + * Accessor for the length of the text field of an atsc_dcc_arriving_request_descriptor. + * + * @param d atsc_dcc_arriving_request_descriptor pointer. + * @return The length in bytes. + */ +static inline int + atsc_dcc_arriving_request_descriptor_text_length(struct + atsc_dcc_arriving_request_descriptor *d) +{ + return d->d.len - 2; +} + + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/atsc/dcc_departing_request_descriptor.h b/lib/libucsi/atsc/dcc_departing_request_descriptor.h new file mode 100644 index 0000000..851f0cc --- /dev/null +++ b/lib/libucsi/atsc/dcc_departing_request_descriptor.h @@ -0,0 +1,108 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_ATSC_DCC_DEPARTING_REQUEST_DESCRIPTOR +#define _UCSI_ATSC_DCC_DEPARTING_REQUEST_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +enum atsc_dcc_departing_request_type { + DCC_DEPART_TYPE_IMMEDIATE = 0x01, + DCC_DEPART_TYPE_DEFER_10SEC = 0x02, + DCC_DEPART_TYPE_DEFER = 0x03, +}; + +/** + * atsc_dcc_departing_request_descriptor structure. + */ +struct atsc_dcc_departing_request_descriptor { + struct descriptor d; + + uint8_t dcc_departing_request_type; + uint8_t dcc_departing_request_text_length; + /* struct atsc_text text[] */ +} __ucsi_packed; + +/** + * Process an atsc_dcc_departing_request_descriptor. + * + * @param d Generic descriptor pointer. + * @return atsc_dcc_departing_request_descriptor pointer, or NULL on error. + */ +static inline struct atsc_dcc_departing_request_descriptor* + atsc_dcc_departing_request_descriptor_codec(struct descriptor* d) +{ + struct atsc_dcc_departing_request_descriptor *ret = + (struct atsc_dcc_departing_request_descriptor *) d; + + if (d->len < 2) + return NULL; + + if (d->len != 2 + ret->dcc_departing_request_text_length) + return NULL; + + if (atsc_text_validate(((uint8_t*) d) + sizeof(struct atsc_dcc_departing_request_descriptor), + ret->dcc_departing_request_text_length)) + return NULL; + + return (struct atsc_dcc_departing_request_descriptor*) d; +} + +/** + * Accessor for the text field of an atsc_dcc_departing_request_descriptor. + * + * @param d atsc_dcc_departing_request_descriptor pointer. + * @return Pointer to the atsc_text data, or NULL on error. + */ +static inline struct atsc_text* + atsc_dcc_departing_request_descriptor_text(struct atsc_dcc_departing_request_descriptor *d) +{ + uint8_t *txt = ((uint8_t*) d) + sizeof(struct atsc_dcc_departing_request_descriptor); + + return (struct atsc_text*) txt; +} + +/** + * Accessor for the length of the text field of an atsc_dcc_departing_request_descriptor. + * + * @param d atsc_dcc_departing_request_descriptor pointer. + * @return The length in bytes. + */ +static inline int + atsc_dcc_departing_request_descriptor_text_length(struct + atsc_dcc_departing_request_descriptor *d) +{ + return d->d.len - 2; +} + + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/atsc/dccsct_section.c b/lib/libucsi/atsc/dccsct_section.c new file mode 100644 index 0000000..59ad069 --- /dev/null +++ b/lib/libucsi/atsc/dccsct_section.c @@ -0,0 +1,109 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <libucsi/atsc/dccsct_section.h> + +struct atsc_dccsct_section *atsc_dccsct_section_codec(struct atsc_section_psip *psip) +{ + uint8_t * buf = (uint8_t *) psip; + size_t pos = 0; + size_t len = section_ext_length(&(psip->ext_head)); + int idx; + + if (len < sizeof(struct atsc_dccsct_section)) + return NULL; + struct atsc_dccsct_section *dccsct = (struct atsc_dccsct_section *) psip; + + pos += sizeof(struct atsc_dccsct_section); + for(idx =0; idx < dccsct->updates_defined; idx++) { + if (len < (pos + sizeof(struct atsc_dccsct_update))) + return NULL; + struct atsc_dccsct_update *update = (struct atsc_dccsct_update *) (buf+pos); + + pos += sizeof(struct atsc_dccsct_update); + if (len < (pos + update->update_data_length)) + return NULL; + + switch(update->update_type) { + case ATSC_DCCST_UPDATE_NEW_GENRE: { + int sublen = sizeof(struct atsc_dccsct_update_new_genre); + if (update->update_data_length < sublen) + return NULL; + + if (atsc_text_validate(buf+pos+sublen, update->update_data_length - sublen)) + return NULL; + break; + } + case ATSC_DCCST_UPDATE_NEW_STATE: { + int sublen = sizeof(struct atsc_dccsct_update_new_state); + if (update->update_data_length < sublen) + return NULL; + + if (atsc_text_validate(buf+pos+sublen, update->update_data_length - sublen)) + return NULL; + break; + } + case ATSC_DCCST_UPDATE_NEW_COUNTY: { + int sublen = sizeof(struct atsc_dccsct_update_new_county); + if (update->update_data_length < sublen) + return NULL; + bswap16(buf+pos+1); + + if (atsc_text_validate(buf+pos+sublen, update->update_data_length - sublen)) + return NULL; + break; + } + } + + pos += update->update_data_length; + if (len < (pos + sizeof(struct atsc_dccsct_update_part2))) + return NULL; + struct atsc_dccsct_update_part2 *part2 = (struct atsc_dccsct_update_part2 *) buf + pos; + + bswap16(buf+pos); + + pos += sizeof(struct atsc_dccsct_update_part2); + if (len < (pos + part2->descriptors_length)) + return NULL; + if (verify_descriptors(buf + pos, part2->descriptors_length)) + return NULL; + + pos += part2->descriptors_length; + } + + if (len < (pos + sizeof(struct atsc_dccsct_section_part2))) + return NULL; + struct atsc_dccsct_section_part2 *part2 = (struct atsc_dccsct_section_part2 *) (buf+pos); + + bswap16(buf+pos); + + pos += sizeof(struct atsc_dccsct_section_part2); + if (len < (pos + part2->descriptors_length)) + return NULL; + if (verify_descriptors(buf + pos, part2->descriptors_length)) + return NULL; + + pos += part2->descriptors_length; + if (pos != len) + return NULL; + + return (struct atsc_dccsct_section *) psip; +} diff --git a/lib/libucsi/atsc/dccsct_section.h b/lib/libucsi/atsc/dccsct_section.h new file mode 100644 index 0000000..f9f3522 --- /dev/null +++ b/lib/libucsi/atsc/dccsct_section.h @@ -0,0 +1,327 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_ATSC_DCCSCT_SECTION_H +#define _UCSI_ATSC_DCCSCT_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/atsc/section.h> +#include <libucsi/atsc/types.h> + +enum atsc_dccst_update_types { + ATSC_DCCST_UPDATE_NEW_GENRE = 0x01, + ATSC_DCCST_UPDATE_NEW_STATE = 0x02, + ATSC_DCCST_UPDATE_NEW_COUNTY = 0x03, +}; + +/** + * atsc_dccsct_section structure. + */ +struct atsc_dccsct_section { + struct atsc_section_psip head; + + uint8_t updates_defined; + /* struct atsc_dccsct_update updates */ + /* struct atsc_dccsct_section_part2 part2 */ +} __ucsi_packed; + +struct atsc_dccsct_update { + uint8_t update_type; + uint8_t update_data_length; + /* struct atsc_dccsct_update_XXX data -- depends on update_type */ + /* struct atsc_dccsct_update_part2 part2 */ +} __ucsi_packed; + +struct atsc_dccsct_update_new_genre { + uint8_t genre_category_code; + /* atsc_text name */ +} __ucsi_packed; + +struct atsc_dccsct_update_new_state { + uint8_t dcc_state_location_code; + /* atsc_text name */ +} __ucsi_packed; + +struct atsc_dccsct_update_new_county { + uint8_t state_code; + EBIT2(uint16_t reserved : 6; , + uint16_t dcc_county_location_code :10; ); + /* atsc_text name */ +} __ucsi_packed; + +struct atsc_dccsct_update_part2 { + EBIT2(uint16_t reserved : 6; , + uint16_t descriptors_length :10; ); + /* struct descriptor descriptors[] */ +} __ucsi_packed; + +struct atsc_dccsct_section_part2 { + EBIT2(uint16_t reserved : 6; , + uint16_t descriptors_length :10; ); + /* struct descriptor descriptors[] */ +} __ucsi_packed; + +/** + * Process an atsc_dccsct_section. + * + * @param section Pointer to an atsc_section_psip structure. + * @return atsc_dccsct_section pointer, or NULL on error. + */ +struct atsc_dccsct_section *atsc_dccsct_section_codec(struct atsc_section_psip *section); + +/** + * Accessor for the dccsct_type field of a dccsct. + * + * @param dccsct dccsct pointer. + * @return The dccsct_type. + */ +static inline uint16_t atsc_dccsct_section_dccsct_type(struct atsc_dccsct_section *dccsct) +{ + return dccsct->head.ext_head.table_id_ext; +} + +/** + * Iterator for the updates field in an atsc_dccsct_section. + * + * @param dccsct atsc_dccsct_section pointer. + * @param pos Variable containing a pointer to the current atsc_dccsct_update. + * @param idx Integer used to count which test we are in. + */ +#define atsc_dccsct_section_updates_for_each(dccsct, pos, idx) \ + for ((pos) = atsc_dccsct_section_updates_first(dccsct), idx=0; \ + (pos); \ + (pos) = atsc_dccsct_section_updates_next(dccsct, pos, ++idx)) + +/** + * Accessor for the data field of a new genre atsc_dccsct_update. + * + * @param update atsc_dccsct_update pointer. + * @return struct atsc_dccsct_update_new_genre pointer. + */ +static inline struct atsc_dccsct_update_new_genre *atsc_dccsct_update_new_genre(struct atsc_dccsct_update *update) +{ + if (update->update_type != ATSC_DCCST_UPDATE_NEW_GENRE) + return NULL; + + return (struct atsc_dccsct_update_new_genre *) + (((uint8_t*) update) + sizeof(struct atsc_dccsct_update)); +} + +/** + * Accessor for the name field of an atsc_dccsct_update_new_genre. + * + * @param update atsc_dccsct_update_new_genre pointer. + * @return text pointer. + */ +static inline struct atsc_text *atsc_dccsct_update_new_genre_name(struct atsc_dccsct_update *update) +{ + if ((update->update_data_length - 1) == 0) + return NULL; + + return (struct atsc_text *) + (((uint8_t*) update) + sizeof(struct atsc_dccsct_update_new_genre)); +} + +/** + * Accessor for the data field of a new state atsc_dccsct_update. + * + * @param update atsc_dccsct_update pointer. + * @return struct atsc_dccsct_update_new_state pointer. + */ +static inline struct atsc_dccsct_update_new_state * + atsc_dccsct_update_new_state(struct atsc_dccsct_update *update) +{ + if (update->update_type != ATSC_DCCST_UPDATE_NEW_STATE) + return NULL; + + return (struct atsc_dccsct_update_new_state *) + (((uint8_t*) update) + sizeof(struct atsc_dccsct_update)); +} + +/** + * Accessor for the name field of an atsc_dccsct_update_new_state. + * + * @param update atsc_dccsct_update_new_state pointer. + * @return text pointer. + */ +static inline struct atsc_text *atsc_dccsct_update_new_state_name(struct atsc_dccsct_update *update) +{ + if ((update->update_data_length - 1) == 0) + return NULL; + + return (struct atsc_text *) + (((uint8_t*) update) + sizeof(struct atsc_dccsct_update_new_state)); +} + +/** + * Accessor for the data field of a new county atsc_dccsct_update. + * + * @param update atsc_dccsct_update pointer. + * @return struct atsc_dccsct_update_new_county pointer. + */ +static inline struct atsc_dccsct_update_new_county * + atsc_dccsct_update_new_county(struct atsc_dccsct_update *update) +{ + if (update->update_type != ATSC_DCCST_UPDATE_NEW_COUNTY) + return NULL; + + return (struct atsc_dccsct_update_new_county *) + (((uint8_t*) update) + sizeof(struct atsc_dccsct_update)); +} + +/** + * Accessor for the name field of an atsc_dccsct_update_new_county. + * + * @param update atsc_dccsct_update_new_county pointer. + * @return text pointer. + */ +static inline struct atsc_text *atsc_dccsct_update_new_county_name(struct atsc_dccsct_update *update) +{ + if ((update->update_data_length - 3) == 0) + return NULL; + + return (struct atsc_text*) + (((uint8_t*) update) + sizeof(struct atsc_dccsct_update_new_county)); +} + +/** + * Accessor for the part2 field of an atsc_dccsct_update. + * + * @param update atsc_dccsct_update pointer. + * @return struct atsc_dccsct_test_part2 pointer. + */ +static inline struct atsc_dccsct_update_part2 *atsc_dccsct_update_part2(struct atsc_dccsct_update *update) +{ + int pos = sizeof(struct atsc_dccsct_update); + pos += update->update_data_length; + + return (struct atsc_dccsct_update_part2 *) (((uint8_t*) update) + pos); +} + +/** + * Iterator for the descriptors field in an atsc_dccsct_update_part2 structure. + * + * @param part2 atsc_dccsct_update_part2 pointer. + * @param pos Variable containing a pointer to the current descriptor. + */ +#define atsc_dccsct_update_part2_descriptors_for_each(part2, pos) \ + for ((pos) = atsc_dccsct_update_part2_descriptors_first(part2); \ + (pos); \ + (pos) = atsc_dccsct_update_part2_descriptors_next(part2, pos)) + +/** + * Iterator for the descriptors field in a atsc_dccsct_section_part2 structure. + * + * @param part2 atsc_dccsct_section_part2 pointer. + * @param pos Variable containing a pointer to the current descriptor. + */ +#define atsc_dccsct_section_part2_descriptors_for_each(part2, pos) \ + for ((pos) = atsc_dccsct_section_part2_descriptors_first(part2); \ + (pos); \ + (pos) = atsc_dccsct_section_part2_descriptors_next(part2, pos)) + + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct atsc_dccsct_update * + atsc_dccsct_section_updates_first(struct atsc_dccsct_section *dccsct) +{ + size_t pos = sizeof(struct atsc_dccsct_section); + + if (dccsct->updates_defined == 0) + return NULL; + + return (struct atsc_dccsct_update*) (((uint8_t *) dccsct) + pos); +} + +static inline struct atsc_dccsct_update* + atsc_dccsct_section_updates_next(struct atsc_dccsct_section *dccsct, + struct atsc_dccsct_update *pos, + int idx) +{ + if (idx >= dccsct->updates_defined) + return NULL; + + struct atsc_dccsct_update_part2 *part2 = atsc_dccsct_update_part2(pos); + int len = sizeof(struct atsc_dccsct_update_part2); + len += part2->descriptors_length; + + return (struct atsc_dccsct_update *) (((uint8_t*) part2) + len); +} + +static inline struct descriptor * + atsc_dccsct_update_part2_descriptors_first(struct atsc_dccsct_update_part2 *part2) +{ + size_t pos = sizeof(struct atsc_dccsct_update_part2); + + if (part2->descriptors_length == 0) + return NULL; + + return (struct descriptor*) (((uint8_t *) part2) + pos); +} + +static inline struct descriptor * + atsc_dccsct_update_part2_descriptors_next(struct atsc_dccsct_update_part2 *part2, + struct descriptor *pos) +{ + return next_descriptor((uint8_t*) part2 + sizeof(struct atsc_dccsct_update_part2), + part2->descriptors_length, + pos); +} + +static inline struct descriptor * + atsc_dccsct_section_part2_descriptors_first(struct atsc_dccsct_section_part2 *part2) +{ + size_t pos = sizeof(struct atsc_dccsct_section_part2); + + if (part2->descriptors_length == 0) + return NULL; + + return (struct descriptor*) (((uint8_t *) part2) + pos); +} + +static inline struct descriptor * + atsc_dccsct_section_part2_descriptors_next(struct atsc_dccsct_section_part2 *part2, + struct descriptor *pos) +{ + return next_descriptor((uint8_t*) part2 + sizeof(struct atsc_dccsct_section_part2), + part2->descriptors_length, + pos); +} + + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/atsc/dcct_section.c b/lib/libucsi/atsc/dcct_section.c new file mode 100644 index 0000000..7d0b83b --- /dev/null +++ b/lib/libucsi/atsc/dcct_section.c @@ -0,0 +1,96 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <libucsi/atsc/dcct_section.h> + +struct atsc_dcct_section *atsc_dcct_section_codec(struct atsc_section_psip *psip) +{ + uint8_t * buf = (uint8_t *) psip; + size_t pos = 0; + size_t len = section_ext_length(&(psip->ext_head)); + int testidx; + int termidx; + + if (len < sizeof(struct atsc_dcct_section)) + return NULL; + struct atsc_dcct_section *dcct = (struct atsc_dcct_section *) psip; + + pos += sizeof(struct atsc_dcct_section); + for(testidx =0; testidx < dcct->dcc_test_count; testidx++) { + if (len < (pos + sizeof(struct atsc_dcct_test))) + return NULL; + struct atsc_dcct_test *test = (struct atsc_dcct_test *) (buf+pos); + + bswap24(buf+pos); + bswap24(buf+pos+3); + bswap32(buf+pos+6); + bswap32(buf+pos+10); + + pos += sizeof(struct atsc_dcct_test); + for(termidx =0; termidx < test->dcc_term_count; termidx++) { + if (len < (pos + sizeof(struct atsc_dcct_term))) + return NULL; + struct atsc_dcct_term *term = (struct atsc_dcct_term *) (buf+pos); + + bswap64(buf+pos+1); + bswap16(buf+pos+9); + + pos += sizeof(struct atsc_dcct_term); + if (len < (pos + term->descriptors_length)) + return NULL; + if (verify_descriptors(buf + pos, term->descriptors_length)) + return NULL; + + pos += term->descriptors_length; + } + + if (len < (pos + sizeof(struct atsc_dcct_test_part2))) + return NULL; + struct atsc_dcct_test_part2 *part2 = (struct atsc_dcct_test_part2 *) (buf+pos); + + bswap16(buf+pos); + + pos += sizeof(struct atsc_dcct_test_part2); + if (len < (pos + part2->descriptors_length)) + return NULL; + if (verify_descriptors(buf + pos, part2->descriptors_length)) + return NULL; + pos += part2->descriptors_length; + } + + if (len < (pos + sizeof(struct atsc_dcct_section_part2))) + return NULL; + struct atsc_dcct_section_part2 *part2 = (struct atsc_dcct_section_part2 *) (buf+pos); + + bswap16(buf+pos); + + pos += sizeof(struct atsc_dcct_section_part2); + if (len < (pos + part2->descriptors_length)) + return NULL; + if (verify_descriptors(buf + pos, part2->descriptors_length)) + return NULL; + + pos += part2->descriptors_length; + if (pos != len) + return NULL; + + return (struct atsc_dcct_section *) psip; +} diff --git a/lib/libucsi/atsc/dcct_section.h b/lib/libucsi/atsc/dcct_section.h new file mode 100644 index 0000000..647bd4b --- /dev/null +++ b/lib/libucsi/atsc/dcct_section.h @@ -0,0 +1,380 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_ATSC_DCCT_SECTION_H +#define _UCSI_ATSC_DCCT_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/atsc/section.h> +#include <libucsi/atsc/types.h> + +enum atsc_dcc_context { + ATSC_DCC_CONTEXT_TEMPORARY_RETUNE = 0, + ATSC_DCC_CONTEXT_CHANNEL_REDIRECT = 1, +}; + +enum atsc_dcc_selection_type { + ATSC_DCC_SELECTION_UNCONDITIONAL_CHANNEL_CHANGE = 0x00, + ATSC_DCC_SELECTION_NUMERIC_POSTAL_CODE_INCLUSION = 0x01, + ATSC_DCC_SELECTION_ALPHANUMERIC_POSTAL_CODE_INCLUSION = 0x02, + ATSC_DCC_SELECTION_DEMOGRAPHIC_CATEGORY_ONE_OR_MORE = 0x05, + ATSC_DCC_SELECTION_DEMOGRAPHIC_CATEGORY_ALL = 0x06, + ATSC_DCC_SELECTION_GENRE_CATEGORY_ONE_OR_MORE = 0x07, + ATSC_DCC_SELECTION_GENRE_CATEGORY_ALL = 0x08, + ATSC_DCC_SELECTION_CANNOT_BE_AUTHORIZED = 0x09, + ATSC_DCC_SELECTION_GEOGRAPHIC_LOCATION_INCLUSION = 0x0c, + ATSC_DCC_SELECTION_RATING_BLOCKED = 0x0d, + ATSC_DCC_SELECTION_RETURN_TO_ORIGINAL_CHANNEL = 0x0f, + ATSC_DCC_SELECTION_NUMERIC_POSTAL_CODE_EXCLUSION = 0x11, + ATSC_DCC_SELECTION_ALPHANUMERIC_POSTAL_CODE_EXCLUSION = 0x12, + ATSC_DCC_SELECTION_DEMOGRAPHIC_CATEGORY_NOT_ONE_OR_MORE = 0x15, + ATSC_DCC_SELECTION_DEMOGRAPHIC_CATEGORY_NOT_ALL = 0x16, + ATSC_DCC_SELECTION_GENRE_CATEGORY_NOT_ONE_OR_MORE = 0x17, + ATSC_DCC_SELECTION_GENRE_CATEGORY_NOT_ALL = 0x18, + ATSC_DCC_SELECTION_GEOGRAPHIC_LOCATION_EXCLUSION = 0x1c, + ATSC_DCC_SELECTION_VIEWER_DIRECT_SELECT_A = 0x20, + ATSC_DCC_SELECTION_VIEWER_DIRECT_SELECT_B = 0x21, + ATSC_DCC_SELECTION_VIEWER_DIRECT_SELECT_C = 0x22, + ATSC_DCC_SELECTION_VIEWER_DIRECT_SELECT_D = 0x23, +}; + +/** + * atsc_dcct_section structure. + */ +struct atsc_dcct_section { + struct atsc_section_psip head; + + uint8_t dcc_test_count; + /* struct atsc_dcct_test tests */ + /* struct atsc_dcct_section_part2 part2 */ +} __ucsi_packed; + +struct atsc_dcct_test { + EBIT4(uint32_t dcc_context : 1; , + uint32_t reserved : 3; , + uint32_t dcc_from_major_channel_number :10; , + uint32_t dcc_from_minor_channel_number :10; ); + EBIT3(uint32_t reserved1 : 4; , + uint32_t dcc_to_major_channel_number :10; , + uint32_t dcc_to_minor_channel_number :10; ); + atsctime_t start_time; + atsctime_t end_time; + uint8_t dcc_term_count; + /* struct atsc_dcct_term terms */ + /* struct atsc_dcct_test_part2 part2 */ +} __ucsi_packed; + +struct atsc_dcct_term { + uint8_t dcc_selection_type; + uint64_t dcc_selection_id; + EBIT2(uint16_t reserved : 6; , + uint16_t descriptors_length :10; ); + /* struct descriptor descriptors[] */ +} __ucsi_packed; + +struct atsc_dcct_test_part2 { + EBIT2(uint16_t reserved : 6; , + uint16_t descriptors_length :10; ); + /* struct descriptor descriptors[] */ +} __ucsi_packed; + +struct atsc_dcct_section_part2 { + EBIT2(uint16_t reserved : 6; , + uint16_t descriptors_length :10; ); + /* struct descriptor descriptors[] */ +} __ucsi_packed; + +static inline struct atsc_dcct_test * + atsc_dcct_section_tests_first(struct atsc_dcct_section *dcct); +static inline struct atsc_dcct_test * + atsc_dcct_section_tests_next(struct atsc_dcct_section *dcct, + struct atsc_dcct_test *pos, + int idx); +static inline struct atsc_dcct_term * + atsc_dcct_test_terms_first(struct atsc_dcct_test *test); +static inline struct atsc_dcct_term * + atsc_dcct_test_terms_next(struct atsc_dcct_test *test, + struct atsc_dcct_term *pos, + int idx); + + +/** + * Process an atsc_dcct_section. + * + * @param section Pointer to an atsc_section_psip structure. + * @return atsc_dcct_section pointer, or NULL on error. + */ +struct atsc_dcct_section *atsc_dcct_section_codec(struct atsc_section_psip *section); + +/** + * Accessor for the dcc_subtype field of a dcct. + * + * @param dcct dcct pointer. + * @return The dcc_subtype. + */ +static inline uint8_t atsc_dcct_section_dcc_subtype(struct atsc_dcct_section *dcct) +{ + return dcct->head.ext_head.table_id_ext >> 8; +} + +/** + * Accessor for the dcc_id field of a dcct. + * + * @param dcct dcct pointer. + * @return The dcc_id. + */ +static inline uint8_t atsc_dcct_section_dcc_id(struct atsc_dcct_section *dcct) +{ + return dcct->head.ext_head.table_id_ext & 0xff; +} + +/** + * Iterator for the tests field in an atsc_dcct_section. + * + * @param dcct atsc_dcct_section pointer. + * @param pos Variable containing a pointer to the current atsc_dcct_test. + * @param idx Integer used to count which test we are in. + */ +#define atsc_dcct_section_tests_for_each(dcct, pos, idx) \ + for ((pos) = atsc_dcct_section_tests_first(dcct), idx=0; \ + (pos); \ + (pos) = atsc_dcct_section_tests_next(dcct, pos, ++idx)) + +/** + * Iterator for the terms field in an atsc_dcct_test. + * + * @param test atsc_dcct_test pointer. + * @param pos Variable containing a pointer to the current atsc_dcct_term. + * @param idx Integer used to count which test we are in. + */ +#define atsc_dcct_test_terms_for_each(test, pos, idx) \ + for ((pos) = atsc_dcct_test_terms_first(test), idx=0; \ + (pos); \ + (pos) = atsc_dcct_test_terms_next(test, pos, ++idx)) + +/** + * Iterator for the descriptors field in a atsc_dcct_term structure. + * + * @param term atsc_dcct_term pointer. + * @param pos Variable containing a pointer to the current descriptor. + */ +#define atsc_dcct_term_descriptors_for_each(term, pos) \ + for ((pos) = atsc_dcct_term_descriptors_first(term); \ + (pos); \ + (pos) = atsc_dcct_term_descriptors_next(term, pos)) + +/** + * Accessor for the part2 field of an atsc_dcct_test. + * + * @param test atsc_dcct_test pointer. + * @return struct atsc_dcct_test_part2 pointer. + */ +static inline struct atsc_dcct_test_part2 *atsc_dcct_test_part2(struct atsc_dcct_test *test) +{ + int pos = sizeof(struct atsc_dcct_test); + + struct atsc_dcct_term *cur_term; + int idx; + atsc_dcct_test_terms_for_each(test, cur_term, idx) { + pos += sizeof(struct atsc_dcct_term); + pos += cur_term->descriptors_length; + } + + return (struct atsc_dcct_test_part2 *) (((uint8_t*) test) + pos); +} + +/** + * Iterator for the descriptors field in a atsc_dcct_test_part2 structure. + * + * @param term atsc_dcct_test_part2 pointer. + * @param pos Variable containing a pointer to the current descriptor. + */ +#define atsc_dcct_test_part2_descriptors_for_each(part2, pos) \ + for ((pos) = atsc_dcct_test_part2_descriptors_first(part2); \ + (pos); \ + (pos) = atsc_dcct_test_part2_descriptors_next(part2, pos)) + +/** + * Accessor for the part2 field of an atsc_dcct_section. + * + * @param dcct atsc_dcct_section pointer. + * @return struct atsc_dcct_section_part2 pointer. + */ +static inline struct atsc_dcct_section_part2 *atsc_dcct_section_part2(struct atsc_dcct_section *dcct) +{ + int pos = sizeof(struct atsc_dcct_section); + + struct atsc_dcct_test *cur_test; + int testidx; + atsc_dcct_section_tests_for_each(dcct, cur_test, testidx) { + struct atsc_dcct_test_part2 *part2 = atsc_dcct_test_part2(cur_test); + pos += ((uint8_t*) part2 - (uint8_t*) cur_test); + + pos += sizeof(struct atsc_dcct_test_part2); + pos += part2->descriptors_length; + } + + return (struct atsc_dcct_section_part2 *) (((uint8_t*) dcct) + pos); +} + +/** + * Iterator for the descriptors field in a atsc_dcct_section_part2 structure. + * + * @param part2 atsc_dcct_section_part2 pointer. + * @param pos Variable containing a pointer to the current descriptor. + */ +#define atsc_dcct_section_part2_descriptors_for_each(part2, pos) \ + for ((pos) = atsc_dcct_section_part2_descriptors_first(part2); \ + (pos); \ + (pos) = atsc_dcct_section_part2_descriptors_next(part2, pos)) + + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct atsc_dcct_test * + atsc_dcct_section_tests_first(struct atsc_dcct_section *dcct) +{ + size_t pos = sizeof(struct atsc_dcct_section); + + if (dcct->dcc_test_count == 0) + return NULL; + + return (struct atsc_dcct_test*) (((uint8_t *) dcct) + pos); +} + +static inline struct atsc_dcct_test * + atsc_dcct_section_tests_next(struct atsc_dcct_section *dcct, + struct atsc_dcct_test *pos, + int idx) +{ + if (idx >= dcct->dcc_test_count) + return NULL; + + struct atsc_dcct_test_part2 *part2 = atsc_dcct_test_part2(pos); + int len = sizeof(struct atsc_dcct_test_part2); + len += part2->descriptors_length; + + return (struct atsc_dcct_test *) (((uint8_t*) part2) + len); +} + +static inline struct atsc_dcct_term * + atsc_dcct_test_terms_first(struct atsc_dcct_test *test) +{ + size_t pos = sizeof(struct atsc_dcct_test); + + if (test->dcc_term_count == 0) + return NULL; + + return (struct atsc_dcct_term*) (((uint8_t *) test) + pos); +} + +static inline struct atsc_dcct_term * + atsc_dcct_test_terms_next(struct atsc_dcct_test *test, + struct atsc_dcct_term *pos, + int idx) +{ + if (idx >= test->dcc_term_count) + return NULL; + + int len = sizeof(struct atsc_dcct_term); + len += pos->descriptors_length; + + return (struct atsc_dcct_term *) (((uint8_t*) pos) + len); +} + +static inline struct descriptor * + atsc_dcct_term_descriptors_first(struct atsc_dcct_term *term) +{ + size_t pos = sizeof(struct atsc_dcct_term); + + if (term->descriptors_length == 0) + return NULL; + + return (struct descriptor*) (((uint8_t *) term) + pos); +} + +static inline struct descriptor * + atsc_dcct_term_descriptors_next(struct atsc_dcct_term *term, + struct descriptor *pos) +{ + return next_descriptor((uint8_t*) term + sizeof(struct atsc_dcct_term), + term->descriptors_length, + pos); +} + +static inline struct descriptor * + atsc_dcct_test_part2_descriptors_first(struct atsc_dcct_test_part2 *part2) +{ + size_t pos = sizeof(struct atsc_dcct_test_part2); + + if (part2->descriptors_length == 0) + return NULL; + + return (struct descriptor*) (((uint8_t *) part2) + pos); +} + +static inline struct descriptor * + atsc_dcct_test_part2_descriptors_next(struct atsc_dcct_test_part2 *part2, + struct descriptor *pos) +{ + return next_descriptor((uint8_t*) part2 + sizeof(struct atsc_dcct_test_part2), + part2->descriptors_length, + pos); +} + +static inline struct descriptor * + atsc_dcct_section_part2_descriptors_first(struct atsc_dcct_section_part2 *part2) +{ + size_t pos = sizeof(struct atsc_dcct_section_part2); + + if (part2->descriptors_length == 0) + return NULL; + + return (struct descriptor*) (((uint8_t *) part2) + pos); +} + +static inline struct descriptor * + atsc_dcct_section_part2_descriptors_next(struct atsc_dcct_section_part2 *part2, + struct descriptor *pos) +{ + return next_descriptor((uint8_t*) part2 + sizeof(struct atsc_dcct_section_part2), + part2->descriptors_length, + pos); +} + + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/atsc/descriptor.h b/lib/libucsi/atsc/descriptor.h new file mode 100644 index 0000000..a57176a --- /dev/null +++ b/lib/libucsi/atsc/descriptor.h @@ -0,0 +1,68 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_ATSC_DESCRIPTOR_H +#define _UCSI_ATSC_DESCRIPTOR_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/endianops.h> +#include <libucsi/atsc/stuffing_descriptor.h> +#include <libucsi/atsc/ac3_descriptor.h> +#include <libucsi/atsc/caption_service_descriptor.h> +#include <libucsi/atsc/component_name_descriptor.h> +#include <libucsi/atsc/content_advisory_descriptor.h> +#include <libucsi/atsc/dcc_arriving_request_descriptor.h> +#include <libucsi/atsc/dcc_departing_request_descriptor.h> +#include <libucsi/atsc/extended_channel_name_descriptor.h> +#include <libucsi/atsc/genre_descriptor.h> +#include <libucsi/atsc/rc_descriptor.h> +#include <libucsi/atsc/service_location_descriptor.h> +#include <libucsi/atsc/time_shifted_service_descriptor.h> + +/** + * Enumeration of ATSC descriptor tags. + */ +enum atsc_descriptor_tag { + dtag_atsc_stuffing = 0x80, + dtag_atsc_ac3_audio = 0x81, + dtag_atsc_caption_service = 0x86, + dtag_atsc_content_advisory = 0x87, + dtag_atsc_extended_channel_name = 0xa0, + dtag_atsc_service_location = 0xa1, + dtag_atsc_time_shifted_service = 0xa2, + dtag_atsc_component_name = 0xa3, + dtag_atsc_dcc_departing_request = 0xa8, + dtag_atsc_dcc_arriving_request = 0xa9, + dtag_atsc_redistribution_control = 0xaa, + dtag_atsc_private_information = 0xad, + dtag_atsc_content_identifier = 0xb6, + dtag_atsc_genre = 0xab, +}; + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/atsc/eit_section.c b/lib/libucsi/atsc/eit_section.c new file mode 100644 index 0000000..48cdda6 --- /dev/null +++ b/lib/libucsi/atsc/eit_section.c @@ -0,0 +1,71 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <libucsi/atsc/eit_section.h> + +struct atsc_eit_section *atsc_eit_section_codec(struct atsc_section_psip *psip) +{ + uint8_t * buf = (uint8_t *) psip; + size_t pos = 0; + size_t len = section_ext_length(&(psip->ext_head)); + int idx; + + if (len < sizeof(struct atsc_eit_section)) + return NULL; + struct atsc_eit_section *eit = (struct atsc_eit_section *) psip; + + pos += sizeof(struct atsc_eit_section); + for(idx =0; idx < eit->num_events_in_section; idx++) { + if (len < (pos + sizeof(struct atsc_eit_event))) + return NULL; + struct atsc_eit_event *event = (struct atsc_eit_event *) (buf+pos); + + bswap16(buf+pos); + bswap32(buf+pos+2); + bswap32(buf+pos+6); + + pos += sizeof(struct atsc_eit_event); + if (len < (pos + event->title_length)) + return NULL; + if (atsc_text_validate(buf+pos, event->title_length)) + return NULL; + + pos += event->title_length; + if (len < (pos + sizeof(struct atsc_eit_event_part2))) + return NULL; + struct atsc_eit_event_part2 *part2 = (struct atsc_eit_event_part2 *) (buf+pos); + + bswap16(buf+pos); + + pos += sizeof(struct atsc_eit_event_part2); + if (len < (pos + part2->descriptors_length)) + return NULL; + + if (verify_descriptors(buf + pos, part2->descriptors_length)) + return NULL; + pos += part2->descriptors_length; + } + + if (pos != len) + return NULL; + + return (struct atsc_eit_section *) psip; +} diff --git a/lib/libucsi/atsc/eit_section.h b/lib/libucsi/atsc/eit_section.h new file mode 100644 index 0000000..84bef16 --- /dev/null +++ b/lib/libucsi/atsc/eit_section.h @@ -0,0 +1,191 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_ATSC_EIT_SECTION_H +#define _UCSI_ATSC_EIT_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/atsc/section.h> +#include <libucsi/atsc/types.h> + +/** + * atsc_eit_section structure. + */ +struct atsc_eit_section { + struct atsc_section_psip head; + + uint8_t num_events_in_section; + /* struct atsc_eit_event events[] */ +} __ucsi_packed; + +struct atsc_eit_event { + EBIT2(uint16_t reserved : 2; , + uint16_t event_id :14; ); + atsctime_t start_time; + EBIT4(uint32_t reserved1 : 2; , + uint32_t ETM_location : 2; , + uint32_t length_in_seconds :20; , + uint32_t title_length : 8; ); + /* struct atsc_text title_text */ + /* struct atsc_eit_event_part2 part2 */ +} __ucsi_packed; + +struct atsc_eit_event_part2 { + EBIT2(uint16_t reserved : 4; , + uint16_t descriptors_length :12; ); + /* struct descriptor descriptors[] */ +} __ucsi_packed; + + +/** + * Process a atsc_eit_section. + * + * @param section Pointer to an atsc_section_psip structure. + * @return atsc_eit_section pointer, or NULL on error. + */ +struct atsc_eit_section *atsc_eit_section_codec(struct atsc_section_psip *section); + +/** + * Accessor for the source_id field of an EIT. + * + * @param eit EIT pointer. + * @return The source_id . + */ +static inline uint16_t atsc_eit_section_source_id(struct atsc_eit_section *eit) +{ + return eit->head.ext_head.table_id_ext; +} + +/** + * Iterator for the events field in an atsc_eit_section. + * + * @param eit atsc_eit_section pointer. + * @param pos Variable containing a pointer to the current atsc_eit_event. + * @param idx Integer used to count which event we are in. + */ +#define atsc_eit_section_events_for_each(eit, pos, idx) \ + for ((pos) = atsc_eit_section_events_first(eit), idx=0; \ + (pos); \ + (pos) = atsc_eit_section_events_next(eit, pos, ++idx)) + +/** + * Accessor for the title_text field of an atsc_eit_event. + * + * @param event atsc_eit_event pointer. + * @return struct atsc_text pointer, or NULL on error. + */ +static inline struct atsc_text *atsc_eit_event_name_title_text(struct atsc_eit_event *event) +{ + if (event->title_length == 0) + return NULL; + + return (struct atsc_text*)(((uint8_t*) event) + sizeof(struct atsc_eit_event)); +} + +/** + * Accessor for the part2 field of an atsc_eit_event. + * + * @param event atsc_eit_event pointer. + * @return struct atsc_eit_event_part2 pointer. + */ +static inline struct atsc_eit_event_part2 *atsc_eit_event_part2(struct atsc_eit_event *event) +{ + return (struct atsc_eit_event_part2 *) + (((uint8_t*) event) + sizeof(struct atsc_eit_event) + event->title_length); +} + +/** + * Iterator for the descriptors field in a atsc_eit_section structure. + * + * @param part2 atsc_eit_event_part2 pointer. + * @param pos Variable containing a pointer to the current descriptor. + */ +#define atsc_eit_event_part2_descriptors_for_each(part2, pos) \ + for ((pos) = atsc_eit_event_part2_descriptors_first(part2); \ + (pos); \ + (pos) = atsc_eit_event_part2_descriptors_next(part2, pos)) + + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct atsc_eit_event * + atsc_eit_section_events_first(struct atsc_eit_section *eit) +{ + size_t pos = sizeof(struct atsc_eit_section); + + if (eit->num_events_in_section == 0) + return NULL; + + return (struct atsc_eit_event*) (((uint8_t *) eit) + pos); +} + +static inline struct atsc_eit_event * + atsc_eit_section_events_next(struct atsc_eit_section *eit, + struct atsc_eit_event *pos, + int idx) +{ + if (idx >= eit->num_events_in_section) + return NULL; + + struct atsc_eit_event_part2 *part2 = atsc_eit_event_part2(pos); + int len = sizeof(struct atsc_eit_event_part2); + len += part2->descriptors_length; + + return (struct atsc_eit_event *) (((uint8_t*) part2) + len); +} + +static inline struct descriptor * + atsc_eit_event_part2_descriptors_first(struct atsc_eit_event_part2 *part2) +{ + size_t pos = sizeof(struct atsc_eit_event_part2); + + if (part2->descriptors_length == 0) + return NULL; + + return (struct descriptor*) (((uint8_t *) part2) + pos); +} + +static inline struct descriptor * + atsc_eit_event_part2_descriptors_next(struct atsc_eit_event_part2 *part2, + struct descriptor *pos) +{ + return next_descriptor((uint8_t*) part2 + sizeof(struct atsc_eit_event_part2), + part2->descriptors_length, + pos); +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/atsc/ett_section.c b/lib/libucsi/atsc/ett_section.c new file mode 100644 index 0000000..ab2ff9c --- /dev/null +++ b/lib/libucsi/atsc/ett_section.c @@ -0,0 +1,42 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <libucsi/atsc/ett_section.h> +#include <libucsi/atsc/types.h> + +struct atsc_ett_section *atsc_ett_section_codec(struct atsc_section_psip *psip) +{ + uint8_t * buf = (uint8_t *) psip; + size_t pos = sizeof(struct atsc_section_psip); + size_t len = section_ext_length(&(psip->ext_head)); + + if (len < sizeof(struct atsc_ett_section)) + return NULL; + + bswap32(buf + pos); + pos += 4; + + if (atsc_text_validate(buf + pos, + section_ext_length(&psip->ext_head) - sizeof(struct atsc_ett_section))) + return NULL; + + return (struct atsc_ett_section *) psip; +} diff --git a/lib/libucsi/atsc/ett_section.h b/lib/libucsi/atsc/ett_section.h new file mode 100644 index 0000000..e2bb510 --- /dev/null +++ b/lib/libucsi/atsc/ett_section.h @@ -0,0 +1,91 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_ATSC_ETT_SECTION_H +#define _UCSI_ATSC_ETT_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/atsc/section.h> + +enum atsc_etm_type { + ATSC_ETM_CHANNEL = 0x00, + ATSC_ETM_EVENT = 0x02, +}; + +/** + * atsc_ett_section structure. + */ +struct atsc_ett_section { + struct atsc_section_psip head; + + EBIT3(uint32_t ETM_source_id :16; , + uint32_t ETM_sub_id :14; , + uint32_t ETM_type : 2; ); + /* struct atsc_text extended_text_message */ +} __ucsi_packed; + +/** + * Process a atsc_ett_section. + * + * @param section Pointer to an atsc_section_psip structure. + * @return atsc_ett_section pointer, or NULL on error. + */ +struct atsc_ett_section *atsc_ett_section_codec(struct atsc_section_psip *section); + +/** + * Accessor for the extended_text_message part of an atsc_ett_section. + * + * @param ett atsc_ett_section pointer. + * @return atsc_text pointer, or NULL on error. + */ +static inline struct atsc_text* + atsc_ett_section_extended_text_message(struct atsc_ett_section *ett) +{ + int pos = sizeof(struct atsc_ett_section); + int len = section_ext_length(&ett->head.ext_head) - sizeof(struct atsc_ett_section); + + if (len == 0) + return NULL; + + return (struct atsc_text*)(((uint8_t*) ett) + pos); +} + +/** + * Accessor for the extended_text_message part of an atsc_ett_section. + * + * @param ett atsc_ett_section pointer. + * @return The length. + */ +static inline int + atsc_ett_section_extended_text_message_length(struct atsc_ett_section *ett) +{ + return section_ext_length(&ett->head.ext_head) - sizeof(struct atsc_ett_section); +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/atsc/extended_channel_name_descriptor.h b/lib/libucsi/atsc/extended_channel_name_descriptor.h new file mode 100644 index 0000000..d0b714b --- /dev/null +++ b/lib/libucsi/atsc/extended_channel_name_descriptor.h @@ -0,0 +1,92 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_ATSC_EXTENDED_CHANNEL_NAME_DESCRIPTOR +#define _UCSI_ATSC_EXTENDED_CHANNEL_NAME_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> +#include <libucsi/atsc/types.h> + +/** + * atsc_extended_channel_name_descriptor structure. + */ +struct atsc_extended_channel_name_descriptor { + struct descriptor d; + + /* struct atsc_text text[] */ +} __ucsi_packed; + +/** + * Process an atsc_extended_channel_name_descriptor. + * + * @param d Generic descriptor pointer. + * @return atsc_extended_channel_name_descriptor pointer, or NULL on error. + */ +static inline struct atsc_extended_channel_name_descriptor* + atsc_extended_channel_name_descriptor_codec(struct descriptor* d) +{ + if (atsc_text_validate(((uint8_t*) d) + sizeof(struct atsc_extended_channel_name_descriptor), + d->len)) + return NULL; + + return (struct atsc_extended_channel_name_descriptor*) d; +} + +/** + * Accessor for the text field of an atsc_extended_channel_name_descriptor. + * + * @param d atsc_extended_channel_name_descriptor pointer. + * @return Pointer to the atsc_text data, or NULL on error. + */ +static inline struct atsc_text* + atsc_extended_channel_name_descriptor_text(struct atsc_extended_channel_name_descriptor *d) +{ + uint8_t *txt = ((uint8_t*) d) + sizeof(struct atsc_extended_channel_name_descriptor); + + return (struct atsc_text*) txt; +} + +/** + * Accessor for the length of the text field of an atsc_extended_channel_name_descriptor. + * + * @param d atsc_extended_channel_name_descriptor pointer. + * @return The length in bytes. + */ +static inline int + atsc_extended_channel_name_descriptor_text_length(struct + atsc_extended_channel_name_descriptor *d) +{ + return d->d.len; +} + + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/atsc/genre_descriptor.h b/lib/libucsi/atsc/genre_descriptor.h new file mode 100644 index 0000000..a6fc542 --- /dev/null +++ b/lib/libucsi/atsc/genre_descriptor.h @@ -0,0 +1,82 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_ATSC_GENRE_DESCRIPTOR +#define _UCSI_ATSC_GENRE_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +/** + * atsc_genre_descriptor structure. + */ +struct atsc_genre_descriptor { + struct descriptor d; + + EBIT2(uint8_t reserved : 3; , + uint8_t attribute_count : 5; ); + /* uint8_t attributes[] */ +} __ucsi_packed; + +/** + * Process an atsc_genre_descriptor. + * + * @param d Generic descriptor pointer. + * @return atsc_genre_descriptor pointer, or NULL on error. + */ +static inline struct atsc_genre_descriptor* + atsc_genre_descriptor_codec(struct descriptor* d) +{ + struct atsc_genre_descriptor *ret = + (struct atsc_genre_descriptor *) d; + + if (d->len < 1) + return NULL; + + if (d->len != (1 + ret->attribute_count)) + return NULL; + + return (struct atsc_genre_descriptor*) d; +} + +/** + * Accessor for the attributes field of an atsc_genre_descriptor. + * + * @param d atsc_genre_descriptor pointer. + * @return Pointer to the attributes. + */ +static inline uint8_t* + atsc_genre_descriptor_attributes(struct atsc_genre_descriptor *d) +{ + return ((uint8_t*) d) + sizeof(struct atsc_genre_descriptor); +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/atsc/mgt_section.c b/lib/libucsi/atsc/mgt_section.c new file mode 100644 index 0000000..bc6b3f2 --- /dev/null +++ b/lib/libucsi/atsc/mgt_section.c @@ -0,0 +1,76 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <libucsi/atsc/mgt_section.h> + +struct atsc_mgt_section *atsc_mgt_section_codec(struct atsc_section_psip *psip) +{ + uint8_t * buf = (uint8_t *) psip; + size_t pos = sizeof(struct atsc_section_psip); + size_t len = section_ext_length(&(psip->ext_head)); + struct atsc_mgt_section *mgt = (struct atsc_mgt_section *) psip; + int i; + + if (len < sizeof(struct atsc_mgt_section)) + return NULL; + + bswap16(buf + pos); + pos += 2; + + // we cannot use the tables_defined value here because of the braindead ATSC spec! + for(i=0; i < mgt->tables_defined; i++) { + // we think we're still in the tables - process as normal + if ((pos + sizeof(struct atsc_mgt_table)) > len) + return NULL; + struct atsc_mgt_table *table = (struct atsc_mgt_table *) (buf+pos); + + bswap16(buf+pos); + bswap16(buf+pos+2); + bswap32(buf+pos+5); + bswap16(buf+pos+9); + + pos += sizeof(struct atsc_mgt_table); + if ((pos + table->table_type_descriptors_length) > len) + return NULL; + if (verify_descriptors(buf + pos, table->table_type_descriptors_length)) + return NULL; + + pos += table->table_type_descriptors_length; + } + + if ((pos + sizeof(struct atsc_mgt_section_part2)) > len) + return NULL; + struct atsc_mgt_section_part2 *part2 = (struct atsc_mgt_section_part2 *) (buf+pos); + + bswap16(buf+pos); + + pos += sizeof(struct atsc_mgt_section_part2); + if ((pos + part2->descriptors_length) > len) + return NULL; + if (verify_descriptors(buf + pos, part2->descriptors_length)) + return NULL; + pos += part2->descriptors_length; + + if (pos != len) + return NULL; + + return (struct atsc_mgt_section *) psip; +} diff --git a/lib/libucsi/atsc/mgt_section.h b/lib/libucsi/atsc/mgt_section.h new file mode 100644 index 0000000..3102a54 --- /dev/null +++ b/lib/libucsi/atsc/mgt_section.h @@ -0,0 +1,215 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_ATSC_MGT_SECTION_H +#define _UCSI_ATSC_MGT_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/atsc/section.h> + +enum atsc_mgt_section_table_type { + ATSC_MGT_TABLE_TYPE_TVCT_CURRENT = 0, + ATSC_MGT_TABLE_TYPE_TVCT_NEXT = 1, + ATSC_MGT_TABLE_TYPE_CVCT_CURRENT = 2, + ATSC_MGT_TABLE_TYPE_CVCT_NEXT = 3, + ATSC_MGT_TABLE_TYPE_CHANNEL_ETT = 4, + ATSC_MGT_TABLE_TYPE_DCCSCT = 5, +}; + +/** + * atsc_mgt_section structure. + */ +struct atsc_mgt_section { + struct atsc_section_psip head; + + uint16_t tables_defined; + /* struct atsc_mgt_table tables[] */ + /* struct atsc_mgt_section_part2 part2 */ +} __ucsi_packed; + +struct atsc_mgt_table { + uint16_t table_type; + EBIT2(uint16_t reserved : 3; , + uint16_t table_type_PID :13; ); + EBIT2(uint8_t reserved1 : 3; , + uint8_t table_type_version_number : 5; ); + uint32_t number_bytes; + EBIT2(uint16_t reserved2 : 4; , + uint16_t table_type_descriptors_length :12; ); + /* struct descriptor descriptors[] */ +} __ucsi_packed; + +struct atsc_mgt_section_part2 { + EBIT2(uint16_t reserved : 4; , + uint16_t descriptors_length :12; ); + /* struct descriptor descriptors[] */ +} __ucsi_packed; + +static inline struct atsc_mgt_table * atsc_mgt_section_tables_first(struct atsc_mgt_section *mgt); +static inline struct atsc_mgt_table * + atsc_mgt_section_tables_next(struct atsc_mgt_section *mgt, struct atsc_mgt_table *pos, int idx); + +/** + * Process a atsc_mgt_section. + * + * @param section Pointer to an atsc_section_psip structure. + * @return atsc_mgt_section pointer, or NULL on error. + */ +struct atsc_mgt_section *atsc_mgt_section_codec(struct atsc_section_psip *section); + +/** + * Iterator for the tables field in an atsc_mgt_section. + * + * @param mgt atsc_mgt_section pointer. + * @param pos Variable containing a pointer to the current atsc_mgt_table. + * @param idx Integer used to count which table we in. + */ +#define atsc_mgt_section_tables_for_each(mgt, pos, idx) \ + for ((pos) = atsc_mgt_section_tables_first(mgt), idx=0; \ + (pos); \ + (pos) = atsc_mgt_section_tables_next(mgt, pos, ++idx)) + +/** + * Iterator for the descriptors field in a atsc_mgt_table structure. + * + * @param table atsc_mgt_table pointer. + * @param pos Variable containing a pointer to the current descriptor. + */ +#define atsc_mgt_table_descriptors_for_each(table, pos) \ + for ((pos) = atsc_mgt_table_descriptors_first(table); \ + (pos); \ + (pos) = atsc_mgt_table_descriptors_next(table, pos)) + +/** + * Accessor for the second part of an atsc_mgt_section. + * + * @param mgt atsc_mgt_section pointer. + * @return atsc_mgt_section_part2 pointer. + */ +static inline struct atsc_mgt_section_part2 * + atsc_mgt_section_part2(struct atsc_mgt_section *mgt) +{ + int pos = sizeof(struct atsc_mgt_section); + + struct atsc_mgt_table *cur_table; + int idx; + atsc_mgt_section_tables_for_each(mgt, cur_table, idx) { + pos += sizeof(struct atsc_mgt_table); + pos += cur_table->table_type_descriptors_length; + } + + return (struct atsc_mgt_section_part2 *) (((uint8_t*) mgt) + pos); +} + +/** + * Iterator for the descriptors field in a atsc_mgt_section structure. + * + * @param part2 atsc_mgt_section_part2 pointer. + * @param pos Variable containing a pointer to the current descriptor. + */ +#define atsc_mgt_section_part2_descriptors_for_each(part2, pos) \ + for ((pos) = atsc_mgt_section_part2_descriptors_first(part2); \ + (pos); \ + (pos) = atsc_mgt_section_part2_descriptors_next(part2, pos)) + + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct atsc_mgt_table * + atsc_mgt_section_tables_first(struct atsc_mgt_section *mgt) +{ + size_t pos = sizeof(struct atsc_mgt_section); + + if (mgt->tables_defined == 0) + return NULL; + + return (struct atsc_mgt_table*) (((uint8_t *) mgt) + pos); +} + +static inline struct atsc_mgt_table * + atsc_mgt_section_tables_next(struct atsc_mgt_section *mgt, + struct atsc_mgt_table *pos, + int idx) +{ + if (idx >= mgt->tables_defined) + return NULL; + + return (struct atsc_mgt_table *) + (((uint8_t*) pos) + sizeof(struct atsc_mgt_table) + pos->table_type_descriptors_length); +} + +static inline struct descriptor * + atsc_mgt_table_descriptors_first(struct atsc_mgt_table *table) +{ + size_t pos = sizeof(struct atsc_mgt_table); + + if (table->table_type_descriptors_length == 0) + return NULL; + + return (struct descriptor*) (((uint8_t *) table) + pos); +} + +static inline struct descriptor * + atsc_mgt_table_descriptors_next(struct atsc_mgt_table *table, + struct descriptor *pos) +{ + return next_descriptor((uint8_t*) table + sizeof(struct atsc_mgt_table), + table->table_type_descriptors_length, + pos); +} + +static inline struct descriptor * + atsc_mgt_section_part2_descriptors_first(struct atsc_mgt_section_part2 *part2) +{ + size_t pos = sizeof(struct atsc_mgt_section_part2); + + if (part2->descriptors_length == 0) + return NULL; + + return (struct descriptor*) (((uint8_t *) part2) + pos); +} + +static inline struct descriptor * + atsc_mgt_section_part2_descriptors_next(struct atsc_mgt_section_part2 *part2, + struct descriptor *pos) +{ + return next_descriptor((uint8_t*) part2 + sizeof(struct atsc_mgt_section_part2), + part2->descriptors_length, + pos); +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/atsc/rc_descriptor.h b/lib/libucsi/atsc/rc_descriptor.h new file mode 100644 index 0000000..4fb0e8e --- /dev/null +++ b/lib/libucsi/atsc/rc_descriptor.h @@ -0,0 +1,83 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_ATSC_RC_DESCRIPTOR +#define _UCSI_ATSC_RC_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +/** + * atsc_rc_descriptor structure. + */ +struct atsc_rc_descriptor { + struct descriptor d; + + /* uint8_t info[] */ +} __ucsi_packed; + +/** + * Process an atsc_rc_descriptor. + * + * @param d Generic descriptor pointer. + * @return atsc_rc_descriptor pointer, or NULL on error. + */ +static inline struct atsc_rc_descriptor* + atsc_rc_descriptor_codec(struct descriptor* d) +{ + return (struct atsc_rc_descriptor*) d; +} + +/** + * Accessor for the info field of an atsc_rc_descriptor. + * + * @param d atsc_rc_descriptor pointer. + * @return Pointer to the atsc_text data. + */ +static inline uint8_t* + atsc_rc_descriptor_info(struct atsc_rc_descriptor *d) +{ + return ((uint8_t*) d) + sizeof(struct atsc_rc_descriptor); +} + +/** + * Accessor for the length of the info field of an atsc_rc_descriptor. + * + * @param d atsc_rc_descriptor pointer. + * @return The length + */ +static inline int + atsc_rc_descriptor_info_length(struct atsc_rc_descriptor *d) +{ + return d->d.len; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/atsc/rrt_section.c b/lib/libucsi/atsc/rrt_section.c new file mode 100644 index 0000000..6e96c3a --- /dev/null +++ b/lib/libucsi/atsc/rrt_section.c @@ -0,0 +1,108 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <libucsi/atsc/rrt_section.h> + +struct atsc_rrt_section *atsc_rrt_section_codec(struct atsc_section_psip *psip) +{ + uint8_t * buf = (uint8_t *) psip; + size_t pos = 0; + size_t len = section_ext_length(&(psip->ext_head)); + int idx; + int vidx; + struct atsc_rrt_section *rrt = (struct atsc_rrt_section *) psip; + + if (len < sizeof(struct atsc_rrt_section)) + return NULL; + pos += sizeof(struct atsc_rrt_section); + + if (len < (pos + rrt->rating_region_name_length)) + return NULL; + if (atsc_text_validate(buf+pos, rrt->rating_region_name_length)) + return NULL; + + pos += rrt->rating_region_name_length; + if (len < (pos + sizeof(struct atsc_rrt_section_part2))) + return NULL; + struct atsc_rrt_section_part2 *rrtpart2 = (struct atsc_rrt_section_part2 *) (buf+pos); + + pos += sizeof(struct atsc_rrt_section_part2); + for(idx =0; idx < rrtpart2->dimensions_defined; idx++) { + if (len < (pos + sizeof(struct atsc_rrt_dimension))) + return NULL; + struct atsc_rrt_dimension *dimension = (struct atsc_rrt_dimension *) (buf+pos); + + pos += sizeof(struct atsc_rrt_dimension); + if (len < (pos + dimension->dimension_name_length)) + return NULL; + if (atsc_text_validate(buf+pos, dimension->dimension_name_length)) + return NULL; + + pos += dimension->dimension_name_length; + if (len < (pos + sizeof(struct atsc_rrt_dimension_part2))) + return NULL; + struct atsc_rrt_dimension_part2 *dpart2 = (struct atsc_rrt_dimension_part2 *) (buf+pos); + + pos += sizeof(struct atsc_rrt_dimension_part2); + for(vidx =0; vidx < dpart2->values_defined; vidx++) { + if (len < (pos + sizeof(struct atsc_rrt_dimension_value))) + return NULL; + struct atsc_rrt_dimension_value *value = (struct atsc_rrt_dimension_value *) (buf+pos); + + pos += sizeof(struct atsc_rrt_dimension_value); + if (len < (pos + value->abbrev_rating_value_length)) + return NULL; + if (atsc_text_validate(buf+pos, value->abbrev_rating_value_length)) + return NULL; + + pos += value->abbrev_rating_value_length; + if (len < (pos + sizeof(struct atsc_rrt_dimension_value_part2))) + return NULL; + struct atsc_rrt_dimension_value_part2 *vpart2 = + (struct atsc_rrt_dimension_value_part2 *) (buf+pos); + + pos += sizeof(struct atsc_rrt_dimension_value_part2); + if (len < (pos + vpart2->rating_value_length)) + return NULL; + if (atsc_text_validate(buf+pos, vpart2->rating_value_length)) + return NULL; + + pos+= vpart2->rating_value_length; + } + } + + if (len < (pos + sizeof(struct atsc_rrt_section_part3))) + return NULL; + struct atsc_rrt_section_part3 *part3 = (struct atsc_rrt_section_part3 *) (buf+pos); + + pos += sizeof(struct atsc_rrt_section_part3); + if (len < (pos + part3->descriptors_length)) + return NULL; + + if (verify_descriptors(buf + pos, part3->descriptors_length)) + return NULL; + + pos += part3->descriptors_length; + if (pos != len) + return NULL; + + return (struct atsc_rrt_section *) psip; +} diff --git a/lib/libucsi/atsc/rrt_section.h b/lib/libucsi/atsc/rrt_section.h new file mode 100644 index 0000000..fba4596 --- /dev/null +++ b/lib/libucsi/atsc/rrt_section.h @@ -0,0 +1,379 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_ATSC_RRT_SECTION_H +#define _UCSI_ATSC_RRT_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/atsc/section.h> +#include <libucsi/atsc/types.h> + +/** + * atsc_rrt_section structure. + */ +struct atsc_rrt_section { + struct atsc_section_psip head; + + uint8_t rating_region_name_length; + /* struct atsc_text rating_region_name_text */ + /* struct atsc_rrt_section_part2 part2 */ +} __ucsi_packed; + +struct atsc_rrt_section_part2 { + uint8_t dimensions_defined; + /* struct atsc_rrt_dimension dimensions[] */ + /* struct atsc_rrt_section_part3 part3 */ +} __ucsi_packed; + +struct atsc_rrt_dimension { + uint8_t dimension_name_length; + /* struct atsc_text dimension_name_text */ + /* struct atsc_rrt_dimension_part2 part2 */ +} __ucsi_packed; + +struct atsc_rrt_dimension_part2 { + EBIT3(uint8_t reserved : 3; , + uint8_t graduated_scale : 1; , + uint8_t values_defined : 4; ); + /* struct atsc_rrt_dimension_value values[] */ +} __ucsi_packed; + +struct atsc_rrt_dimension_value { + uint8_t abbrev_rating_value_length; + /* struct atsc_text abbrev_rating_value_text */ + /* struct atsc_rrt_dimension_value_part2 */ +} __ucsi_packed; + +struct atsc_rrt_dimension_value_part2 { + uint8_t rating_value_length; + /* struct atsc_text rating_value_text */ +} __ucsi_packed; + +struct atsc_rrt_section_part3 { + EBIT2(uint16_t reserved : 6; , + uint16_t descriptors_length :10; ); + /* struct descriptor descriptors[] */ +} __ucsi_packed; + + +static inline struct atsc_rrt_dimension * + atsc_rrt_section_dimensions_first(struct atsc_rrt_section_part2 *part2); +static inline struct atsc_rrt_dimension * + atsc_rrt_section_dimensions_next(struct atsc_rrt_section_part2 *part2, + struct atsc_rrt_dimension *pos, + int idx); +static inline struct atsc_rrt_dimension_value * + atsc_rrt_dimension_part2_values_first(struct atsc_rrt_dimension_part2 *part2); +static inline struct atsc_rrt_dimension_value * + atsc_rrt_dimension_part2_values_next(struct atsc_rrt_dimension_part2 *part2, + struct atsc_rrt_dimension_value *pos, + int idx); + +/** + * Process a atsc_rrt_section. + * + * @param section Pointer to anj atsc_section_psip structure. + * @return atsc_rrt_section pointer, or NULL on error. + */ +struct atsc_rrt_section *atsc_rrt_section_codec(struct atsc_section_psip *section); + +/** + * Accessor for the rating_region field of an RRT. + * + * @param rrt RRT pointer. + * @return The transport_stream_id. + */ +static inline uint8_t atsc_rrt_section_rating_region(struct atsc_rrt_section *rrt) +{ + return rrt->head.ext_head.table_id_ext & 0xff; +} + +/** + * Accessor for the rating_region_name_text field of an RRT. + * + * @param rrt RRT pointer. + * @return struct atsc_text pointer, or NULL. + */ +static inline struct atsc_text *atsc_rrt_section_rating_region_name_text(struct atsc_rrt_section *rrt) +{ + if (rrt->rating_region_name_length == 0) + return NULL; + + return (struct atsc_text*)(((uint8_t*) rrt) + sizeof(struct atsc_rrt_section)); +} + +/** + * Accessor for the part2 field of an RRT. + * + * @param rrt RRT pointer. + * @return struct atsc_rrt_section_part2 pointer. + */ +static inline struct atsc_rrt_section_part2 *atsc_rrt_section_part2(struct atsc_rrt_section *rrt) +{ + return (struct atsc_rrt_section_part2 *) + (((uint8_t*) rrt) + sizeof(struct atsc_rrt_section) + + rrt->rating_region_name_length); +} + +/** + * Iterator for the dimensions field in an atsc_rrt_section_part2. + * + * @param rrt atsc_rrt_section pointer. + * @param pos Variable containing a pointer to the current atsc_rrt_dimension. + * @param idx Integer used to count which dimension we are in. + */ +#define atsc_rrt_section_dimensions_for_each(rrt, pos, idx) \ + for ((pos) = atsc_rrt_section_dimensions_first(rrt), idx=0; \ + (pos); \ + (pos) = atsc_rrt_section_dimensions_next(rrt, pos, ++idx)) + +/** + * Accessor for the dimension_name_text field of an atsc_rrt_dimension. + * + * @param dimension atsc_rrt_dimension pointer. + * @return struct atsc_text pointer, or NULL on error. + */ +static inline struct atsc_text *atsc_rrt_dimension_name_text(struct atsc_rrt_dimension *dimension) +{ + if (dimension->dimension_name_length == 0) + return NULL; + + return (struct atsc_text*)(((uint8_t*) dimension) + sizeof(struct atsc_rrt_dimension)); +} + +/** + * Accessor for the part2 field of an atsc_rrt_dimension. + * + * @param dimension atsc_rrt_dimension pointer. + * @return struct atsc_rrt_dimension_part2 pointer. + */ +static inline struct atsc_rrt_dimension_part2 *atsc_rrt_dimension_part2(struct atsc_rrt_dimension *dimension) +{ + return (struct atsc_rrt_dimension_part2 *) + (((uint8_t*) dimension) + + sizeof(struct atsc_rrt_dimension) + + dimension->dimension_name_length); +} + +/** + * Iterator for the values field in a atsc_rrt_dimension_part2 structure. + * + * @param part2 atsc_rrt_dimension_part2 pointer. + * @param pos Variable containing a pointer to the current value. + * @param idx Integer used to count which value we are in + */ +#define atsc_rrt_dimension_part2_values_for_each(part2, pos, idx) \ + for ((pos) = atsc_rrt_dimension_part2_values_first(part2), idx=0; \ + (pos); \ + (pos) = atsc_rrt_dimension_part2_values_next(part2, pos, ++idx)) + +/** + * Accessor for the dimension_name_text field of an atsc_rrt_dimension. + * + * @param dimension atsc_rrt_dimension pointer. + * @return struct atsc_text pointer. + */ +static inline struct atsc_text * + atsc_rrt_dimension_value_abbrev_rating_value_text(struct atsc_rrt_dimension_value *value) +{ + if (value->abbrev_rating_value_length == 0) + return NULL; + + return (struct atsc_text*)(((uint8_t*) value) + sizeof(struct atsc_rrt_dimension_value)); +} + +/** + * Accessor for the part2 field of an atsc_rrt_dimension_value. + * + * @param value atsc_rrt_dimension_value pointer. + * @return struct atsc_rrt_dimension_value_part2 pointer. + */ +static inline struct atsc_rrt_dimension_value_part2 *atsc_rrt_dimension_value_part2(struct atsc_rrt_dimension_value *value) +{ + return (struct atsc_rrt_dimension_value_part2 *) + (((uint8_t*) value) + + sizeof(struct atsc_rrt_dimension_value) + + value->abbrev_rating_value_length); +} + +/** + * Accessor for the rating_value_text field of an atsc_rrt_dimension_value_part2. + * + * @param part2 atsc_rrt_dimension_value_part2 pointer. + * @return struct atsc_text pointer. + */ +static inline struct atsc_text *atsc_rrt_dimension_value_part2_rating_value_text(struct atsc_rrt_dimension_value_part2 *part2) +{ + if (part2->rating_value_length == 0) + return NULL; + + return (struct atsc_text*)(((uint8_t*) part2) + sizeof(struct atsc_rrt_dimension_value_part2)); +} + +/** + * Accessor for the third part of an atsc_rrt_section. + * + * @param part2 atsc_rrt_section_part2 pointer. + * @return atsc_rrt_section_part3 pointer. + */ +static inline struct atsc_rrt_section_part3 * + atsc_rrt_section_part3(struct atsc_rrt_section_part2 *part2) +{ + int pos = sizeof(struct atsc_rrt_section_part2); + + struct atsc_rrt_dimension *cur_dimension; + int idx; + atsc_rrt_section_dimensions_for_each(part2, cur_dimension, idx) { + pos += sizeof(struct atsc_rrt_dimension); + pos += cur_dimension->dimension_name_length; + pos += sizeof(struct atsc_rrt_dimension_part2); + + // now we need to iterate over the values. yuck + struct atsc_rrt_dimension_part2 *dpart2 = atsc_rrt_dimension_part2(cur_dimension); + struct atsc_rrt_dimension_value *cur_value; + int vidx; + atsc_rrt_dimension_part2_values_for_each(dpart2, cur_value, vidx) { + pos += sizeof(struct atsc_rrt_dimension_value); + pos += cur_value->abbrev_rating_value_length; + + struct atsc_rrt_dimension_value_part2 *vpart2 = atsc_rrt_dimension_value_part2(cur_value); + pos += sizeof(struct atsc_rrt_dimension_value_part2); + pos += vpart2->rating_value_length; + } + } + + return (struct atsc_rrt_section_part3 *) (((uint8_t*) part2) + pos); +} + +/** + * Iterator for the descriptors field in a atsc_rrt_section structure. + * + * @param part3 atsc_rrt_section_part3 pointer. + * @param pos Variable containing a pointer to the current descriptor. + */ +#define atsc_rrt_section_part3_descriptors_for_each(part3, pos) \ + for ((pos) = atsc_rrt_section_part3_descriptors_first(part3); \ + (pos); \ + (pos) = atsc_rrt_section_part3_descriptors_next(part3, pos)) + + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct atsc_rrt_dimension * + atsc_rrt_section_dimensions_first(struct atsc_rrt_section_part2 *part2) +{ + size_t pos = sizeof(struct atsc_rrt_section_part2); + + if (part2->dimensions_defined == 0) + return NULL; + + return (struct atsc_rrt_dimension*) (((uint8_t *) part2) + pos); +} + +static inline struct atsc_rrt_dimension * + atsc_rrt_section_dimensions_next(struct atsc_rrt_section_part2 *part2, + struct atsc_rrt_dimension *pos, + int idx) +{ + if (idx >= part2->dimensions_defined) + return NULL; + + struct atsc_rrt_dimension_part2 *dpart2 = atsc_rrt_dimension_part2(pos); + int len = sizeof(struct atsc_rrt_dimension_part2); + + // now we need to iterate over the values. yuck + struct atsc_rrt_dimension_value *cur_value; + int vidx; + atsc_rrt_dimension_part2_values_for_each(dpart2, cur_value, vidx) { + len += sizeof(struct atsc_rrt_dimension_value); + len += cur_value->abbrev_rating_value_length; + + struct atsc_rrt_dimension_value_part2 *vpart2 = atsc_rrt_dimension_value_part2(cur_value); + len += sizeof(struct atsc_rrt_dimension_value_part2); + len += vpart2->rating_value_length; + } + + return (struct atsc_rrt_dimension *) (((uint8_t*) dpart2) + len); +} + +static inline struct atsc_rrt_dimension_value * + atsc_rrt_dimension_part2_values_first(struct atsc_rrt_dimension_part2 *part2) +{ + size_t pos = sizeof(struct atsc_rrt_dimension_part2); + + if (part2->values_defined == 0) + return NULL; + + return (struct atsc_rrt_dimension_value*) (((uint8_t *) part2) + pos); +} + +static inline struct atsc_rrt_dimension_value * + atsc_rrt_dimension_part2_values_next(struct atsc_rrt_dimension_part2 *part2, + struct atsc_rrt_dimension_value *pos, + int idx) +{ + if (idx >= part2->values_defined) + return NULL; + + struct atsc_rrt_dimension_value_part2 *vpart2 = atsc_rrt_dimension_value_part2(pos); + int len = sizeof(struct atsc_rrt_dimension_value_part2); + len += vpart2->rating_value_length; + + return (struct atsc_rrt_dimension_value *) (((uint8_t*) vpart2) + len); +} + +static inline struct descriptor * + atsc_rrt_section_part3_descriptors_first(struct atsc_rrt_section_part3 *part3) +{ + size_t pos = sizeof(struct atsc_rrt_section_part3); + + if (part3->descriptors_length == 0) + return NULL; + + return (struct descriptor*) (((uint8_t *) part3) + pos); +} + +static inline struct descriptor * + atsc_rrt_section_part3_descriptors_next(struct atsc_rrt_section_part3 *part3, + struct descriptor *pos) +{ + return next_descriptor((uint8_t*) part3 + sizeof(struct atsc_rrt_section_part3), + part3->descriptors_length, + pos); +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/atsc/section.h b/lib/libucsi/atsc/section.h new file mode 100644 index 0000000..23d59ea --- /dev/null +++ b/lib/libucsi/atsc/section.h @@ -0,0 +1,84 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <libucsi/section.h> +#include <libucsi/atsc/mgt_section.h> +#include <libucsi/atsc/tvct_section.h> +#include <libucsi/atsc/cvct_section.h> +#include <libucsi/atsc/rrt_section.h> +#include <libucsi/atsc/eit_section.h> +#include <libucsi/atsc/ett_section.h> +#include <libucsi/atsc/stt_section.h> +#include <libucsi/atsc/dcct_section.h> +#include <libucsi/atsc/dccsct_section.h> + +#ifndef _UCSI_ATSC_SECTION_H +#define _UCSI_ATSC_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#define ATSC_BASE_PID 0x1ffb + +/** + * Enumeration of ATSC section tags. + */ +enum atsc_section_tag { + stag_atsc_master_guide = 0xc7, + stag_atsc_terrestrial_virtual_channel = 0xc8, + stag_atsc_cable_virtual_channel = 0xc9, + stag_atsc_rating_region = 0xca, + stag_atsc_event_information = 0xcb, + stag_atsc_extended_text = 0xcc, + stag_atsc_system_time = 0xcd, +}; + +/** + * ATSC specific PSIP section structure. + */ +struct atsc_section_psip { + struct section_ext ext_head; + uint8_t protocol_version; +} __ucsi_packed; + +/** + * Decode a PSIP section structure. + * + * @param section_ext Pointer to the processed section_ext structure. + * @return Pointer to the parsed section_psip structure, or NULL if invalid. + */ +static inline struct atsc_section_psip *atsc_section_psip_decode(struct section_ext *section_ext) +{ + size_t len = section_ext_length(section_ext); + if (len < sizeof(struct atsc_section_psip)) { + return NULL; + } + + return (struct atsc_section_psip *) section_ext; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/atsc/service_location_descriptor.h b/lib/libucsi/atsc/service_location_descriptor.h new file mode 100644 index 0000000..aad5b4a --- /dev/null +++ b/lib/libucsi/atsc/service_location_descriptor.h @@ -0,0 +1,141 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_ATSC_SERVICE_LOCATION_DESCRIPTOR +#define _UCSI_ATSC_SERVICE_LOCATION_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +enum atsc_stream_types { + ATSC_STREAM_TYPE_VIDEO = 0x02, + ATSC_STREAM_TYPE_AUDIO = 0x81, +}; + +/** + * atsc_service_location_descriptor structure. + */ +struct atsc_service_location_descriptor { + struct descriptor d; + + EBIT2(uint16_t reserved : 3; , + uint16_t PCR_PID :13; ); + uint8_t number_elements; + /* struct atsc_service_location_element elements[] */ +} __ucsi_packed; + +/** + * An entry in the elements field of an atsc_service_location_descriptor. + */ +struct atsc_caption_service_location_element { + uint8_t stream_type; + EBIT2(uint16_t reserved : 3; , + uint16_t elementary_PID :13; ); + iso639lang_t language_code; +} __ucsi_packed; + +/** + * Process an atsc_service_location_descriptor. + * + * @param d Generic descriptor pointer. + * @return atsc_service_location_descriptor pointer, or NULL on error. + */ +static inline struct atsc_service_location_descriptor* + atsc_service_location_descriptor_codec(struct descriptor* d) +{ + struct atsc_service_location_descriptor *ret = + (struct atsc_service_location_descriptor *) d; + uint8_t *buf = (uint8_t*) d + 2; + int pos = 0; + int idx; + + if (d->len < 3) + return NULL; + bswap16(buf + pos); + pos+=3; + + for(idx = 0; idx < ret->number_elements; idx++) { + if (d->len < (pos + sizeof(struct atsc_caption_service_entry))) + return NULL; + + bswap16(buf+pos+1); + + pos += sizeof(struct atsc_caption_service_entry); + } + + return (struct atsc_service_location_descriptor*) d; +} + +/** + * Iterator for elements field of a atsc_service_location_descriptor. + * + * @param d atsc_service_location_descriptor pointer. + * @param pos Variable holding a pointer to the current atsc_service_location_element. + * @param idx Integer used to count which dimension we are in. + */ +#define atsc_service_location_descriptor_elements_for_each(d, pos, idx) \ + for ((pos) = atsc_service_location_descriptor_elements_first(d), idx=0; \ + (pos); \ + (pos) = atsc_service_location_descriptor_elements_next(d, pos, ++idx)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct atsc_caption_service_location_element* + atsc_service_location_descriptor_elements_first(struct atsc_service_location_descriptor *d) +{ + if (d->number_elements == 0) + return NULL; + + return (struct atsc_caption_service_location_element *) + ((uint8_t*) d + sizeof(struct atsc_service_location_descriptor)); +} + +static inline struct atsc_caption_service_location_element* + atsc_service_location_descriptor_elements_next(struct atsc_service_location_descriptor *d, + struct atsc_caption_service_location_element *pos, + int idx) +{ + uint8_t *next = (uint8_t *) pos + sizeof(struct atsc_caption_service_location_element); + + if (idx >= d->number_elements) + return NULL; + return (struct atsc_caption_service_location_element *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/atsc/stt_section.c b/lib/libucsi/atsc/stt_section.c new file mode 100644 index 0000000..23ddd76 --- /dev/null +++ b/lib/libucsi/atsc/stt_section.c @@ -0,0 +1,42 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <libucsi/atsc/stt_section.h> + +struct atsc_stt_section *atsc_stt_section_codec(struct atsc_section_psip *psip) +{ + uint8_t *buf = (uint8_t *) psip; + size_t pos = sizeof(struct atsc_section_psip); + size_t len = section_ext_length(&(psip->ext_head)); + + if (len < sizeof(struct atsc_stt_section)) + return NULL; + + bswap32(buf + pos); + pos += 5; + bswap16(buf + pos); + pos += 2; + + if (verify_descriptors(buf + pos, len - sizeof(struct atsc_stt_section))) + return NULL; + + return (struct atsc_stt_section *) psip; +} diff --git a/lib/libucsi/atsc/stt_section.h b/lib/libucsi/atsc/stt_section.h new file mode 100644 index 0000000..79db5a1 --- /dev/null +++ b/lib/libucsi/atsc/stt_section.h @@ -0,0 +1,105 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_ATSC_STT_SECTION_H +#define _UCSI_ATSC_STT_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/atsc/section.h> +#include <libucsi/atsc/types.h> + +/** + * atsc_stt_section structure. + */ +struct atsc_stt_section { + struct atsc_section_psip head; + + atsctime_t system_time; + uint8_t gps_utc_offset; + EBIT4(uint16_t DS_status : 1; , + uint16_t reserved : 2; , + uint16_t DS_day_of_month : 5; , + uint16_t DS_hour : 8; ); + /* struct descriptor descriptors[] */ +} __ucsi_packed; + +/** + * Process a atsc_stt_section. + * + * @param section Pointer to an atsc_section_psip structure. + * @return atsc_stt_section pointer, or NULL on error. + */ +struct atsc_stt_section *atsc_stt_section_codec(struct atsc_section_psip *section); + +/** + * Iterator for the services field in a atsc_stt_section. + * + * @param stt atsc_stt_section pointer. + * @param pos Variable containing a pointer to the current descriptor. + */ +#define atsc_stt_section_descriptors_for_each(stt, pos) \ + for ((pos) = atsc_stt_section_descriptors_first(stt); \ + (pos); \ + (pos) = atsc_stt_section_descriptors_next(stt, pos)) + + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct descriptor * + atsc_stt_section_descriptors_first(struct atsc_stt_section *stt) +{ + size_t pos = sizeof(struct atsc_stt_section); + + if (pos >= section_ext_length(&stt->head.ext_head)) + return NULL; + + return (struct descriptor*) ((uint8_t *) stt + pos); +} + +static inline struct descriptor * + atsc_stt_section_descriptors_next(struct atsc_stt_section *stt, + struct descriptor *pos) +{ + int len = section_ext_length(&stt->head.ext_head); + len -= sizeof(struct atsc_stt_section); + + return next_descriptor((uint8_t*) stt + sizeof(struct atsc_stt_section), + len, + pos); +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/atsc/stuffing_descriptor.h b/lib/libucsi/atsc/stuffing_descriptor.h new file mode 100644 index 0000000..777c282 --- /dev/null +++ b/lib/libucsi/atsc/stuffing_descriptor.h @@ -0,0 +1,82 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_atsc@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_ATSC_STUFFING_DESCRIPTOR +#define _UCSI_ATSC_STUFFING_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * atsc_stuffing_descriptor. + */ +struct atsc_stuffing_descriptor { + struct descriptor d; + + /* uint8_t data[] */ +} __ucsi_packed; + +/** + * Process a atsc_stuffing_descriptor. + * + * @param d Generic descriptor structure. + * @return atsc_stuffing_descriptor pointer, or NULL on error. + */ +static inline struct atsc_stuffing_descriptor* + atsc_stuffing_descriptor_codec(struct descriptor* d) +{ + return (struct atsc_stuffing_descriptor*) d; +} + +/** + * Retrieve a pointer to the data field of a atsc_stuffing_descriptor. + * + * @param d atsc_stuffing_descriptor pointer. + * @return Pointer to the field. + */ +static inline uint8_t * + atsc_stuffing_descriptor_data(struct atsc_stuffing_descriptor *d) +{ + return (uint8_t *) d + sizeof(struct atsc_stuffing_descriptor); +} + +/** + * Calculate length of the data field of a atsc_stuffing_descriptor. + * + * @param d atsc_stuffing_descriptor pointer. + * @return The length in bytes. + */ +static inline int + atsc_stuffing_descriptor_data_length(struct atsc_stuffing_descriptor *d) +{ + return d->d.len; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/atsc/time_shifted_service_descriptor.h b/lib/libucsi/atsc/time_shifted_service_descriptor.h new file mode 100644 index 0000000..599e66d --- /dev/null +++ b/lib/libucsi/atsc/time_shifted_service_descriptor.h @@ -0,0 +1,136 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_ATSC_TIME_SHIFTED_SERVICE_DESCRIPTOR +#define _UCSI_ATSC_TIME_SHIFTED_SERVICE_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +/** + * atsc_time_shifted_service_descriptor structure. + */ +struct atsc_time_shifted_service_descriptor { + struct descriptor d; + + EBIT2(uint8_t reserved : 3; , + uint8_t number_of_services : 5; ); + /* struct atsc_time_shifted_service services[] */ +} __ucsi_packed; + +/** + * An entry in the services field of an atsc_time_shifted_service_descriptor. + */ +struct atsc_time_shifted_service { + EBIT2(uint16_t reserved : 6; , + uint16_t time_shift :10; ); + EBIT3(uint32_t reserved2 : 4; , + uint32_t major_channel_number :10; , + uint32_t minor_channel_number :10; ); +} __ucsi_packed; + +/** + * Process an atsc_time_shifted_service_descriptor. + * + * @param d Generic descriptor pointer. + * @return atsc_time_shifted_service_descriptor pointer, or NULL on error. + */ +static inline struct atsc_time_shifted_service_descriptor* + atsc_time_shifted_service_descriptor_codec(struct descriptor* d) +{ + struct atsc_time_shifted_service_descriptor *ret = + (struct atsc_time_shifted_service_descriptor *) d; + uint8_t *buf = (uint8_t*) d + 2; + int pos = 0; + int idx; + + if (d->len < 1) + return NULL; + pos++; + + for(idx = 0; idx < ret->number_of_services; idx++) { + if (d->len < (pos + sizeof(struct atsc_time_shifted_service))) + return NULL; + + bswap16(buf+pos); + bswap24(buf+pos+2); + + pos += sizeof(struct atsc_time_shifted_service); + } + + return (struct atsc_time_shifted_service_descriptor*) d; +} + +/** + * Iterator for services field of a atsc_time_shifted_service_descriptor. + * + * @param d atsc_time_shifted_service_descriptor pointer. + * @param pos Variable holding a pointer to the current atsc_service_location_element. + * @param idx Integer used to count which service we are in. + */ +#define atsc_time_shifted_service_descriptor_services_for_each(d, pos, idx) \ + for ((pos) = atsc_time_shifted_service_descriptor_services_first(d), idx=0; \ + (pos); \ + (pos) = atsc_time_shifted_service_descriptor_services_next(d, pos, ++idx)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct atsc_time_shifted_service* + atsc_time_shifted_service_descriptor_services_first(struct atsc_time_shifted_service_descriptor *d) +{ + if (d->number_of_services == 0) + return NULL; + + return (struct atsc_time_shifted_service *) + ((uint8_t*) d + sizeof(struct atsc_time_shifted_service_descriptor)); +} + +static inline struct atsc_time_shifted_service* + atsc_time_shifted_service_descriptor_services_next(struct atsc_time_shifted_service_descriptor *d, + struct atsc_time_shifted_service *pos, + int idx) +{ + uint8_t *next = (uint8_t *) pos + sizeof(struct atsc_time_shifted_service); + + if (idx >= d->number_of_services) + return NULL; + return (struct atsc_time_shifted_service *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/atsc/tvct_section.c b/lib/libucsi/atsc/tvct_section.c new file mode 100644 index 0000000..d187414 --- /dev/null +++ b/lib/libucsi/atsc/tvct_section.c @@ -0,0 +1,81 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <libucsi/atsc/tvct_section.h> + +struct atsc_tvct_section *atsc_tvct_section_codec(struct atsc_section_psip *psip) +{ + uint8_t * buf = (uint8_t *) psip; + size_t pos = sizeof(struct atsc_section_psip); + size_t len = section_ext_length(&(psip->ext_head)); + int idx; + struct atsc_tvct_section *tvct = (struct atsc_tvct_section *) psip; + + if (len < sizeof(struct atsc_tvct_section)) + return NULL; + + pos++; + + for(idx =0; idx < tvct->num_channels_in_section; idx++) { + + if ((pos + sizeof(struct atsc_tvct_channel)) > len) + return NULL; + struct atsc_tvct_channel *channel = (struct atsc_tvct_channel *) (buf+pos); + + pos += 7*2; + + bswap32(buf+pos); + bswap32(buf+pos+4); + bswap16(buf+pos+8); + bswap16(buf+pos+10); + bswap16(buf+pos+12); + bswap16(buf+pos+14); + bswap16(buf+pos+16); + pos+=18; + + if ((pos + channel->descriptors_length) > len) + return NULL; + if (verify_descriptors(buf + pos, channel->descriptors_length)) + return NULL; + + pos += channel->descriptors_length; + } + + if ((pos + sizeof(struct atsc_tvct_section_part2)) > len) + return NULL; + struct atsc_tvct_section_part2 *part2 = (struct atsc_tvct_section_part2 *) (buf+pos); + + bswap16(buf+pos); + pos+=2; + + if ((pos + part2->descriptors_length) > len) + return NULL; + + if (verify_descriptors(buf + pos, part2->descriptors_length)) + return NULL; + + pos += part2->descriptors_length; + + if (pos != len) + return NULL; + + return (struct atsc_tvct_section *) psip; +} diff --git a/lib/libucsi/atsc/tvct_section.h b/lib/libucsi/atsc/tvct_section.h new file mode 100644 index 0000000..77bc5f4 --- /dev/null +++ b/lib/libucsi/atsc/tvct_section.h @@ -0,0 +1,227 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_ATSC_TVCT_SECTION_H +#define _UCSI_ATSC_TVCT_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/atsc/section.h> + +/** + * atsc_tvct_section structure. + */ +struct atsc_tvct_section { + struct atsc_section_psip head; + + uint8_t num_channels_in_section; + /* struct atsc_tvct_channel channels[] */ + /* struct atsc_tvct_channel_part2 part2 */ +} __ucsi_packed; + +struct atsc_tvct_channel { + uint16_t short_name[7]; // UTF-16 network ordered + EBIT4(uint32_t reserved : 4; , + uint32_t major_channel_number :10; , + uint32_t minor_channel_number :10; , + uint32_t modulation_mode : 8; ); + uint32_t carrier_frequency; + uint16_t channel_TSID; + uint16_t program_number; + EBIT7(uint16_t ETM_location : 2; , + uint16_t access_controlled : 1; , + uint16_t hidden : 1; , + uint16_t reserved1 : 2; , + uint16_t hide_guide : 1; , + uint16_t reserved2 : 3; , + uint16_t service_type : 6; ); + uint16_t source_id; + EBIT2(uint16_t reserved3 : 6; , + uint16_t descriptors_length :10; ); + /* struct descriptor descriptors[] */ +} __ucsi_packed; + +struct atsc_tvct_section_part2 { + EBIT2(uint16_t reserved : 6; , + uint16_t descriptors_length :10; ); + /* struct descriptor descriptors[] */ +} __ucsi_packed; + +static inline struct atsc_tvct_channel *atsc_tvct_section_channels_first(struct atsc_tvct_section *tvct); +static inline struct atsc_tvct_channel * + atsc_tvct_section_channels_next(struct atsc_tvct_section *tvct, struct atsc_tvct_channel *pos, int idx); + +/** + * Process a atsc_tvct_section. + * + * @param section Pointer to an atsc_section_psip structure. + * @return atsc_tvct_section pointer, or NULL on error. + */ +struct atsc_tvct_section *atsc_tvct_section_codec(struct atsc_section_psip *section); + +/** + * Accessor for the transport_stream_id field of a TVCT. + * + * @param tvct TVCT pointer. + * @return The transport_stream_id. + */ +static inline uint16_t atsc_tvct_section_transport_stream_id(struct atsc_tvct_section *tvct) +{ + return tvct->head.ext_head.table_id_ext; +} + +/** + * Iterator for the channels field in an atsc_tvct_section. + * + * @param mgt atsc_tvct_section pointer. + * @param pos Variable containing a pointer to the current atsc_tvct_channel. + * @param idx Integer used to count which channel we in. + */ +#define atsc_tvct_section_channels_for_each(mgt, pos, idx) \ + for ((pos) = atsc_tvct_section_channels_first(mgt), idx=0; \ + (pos); \ + (pos) = atsc_tvct_section_channels_next(mgt, pos, ++idx)) + +/** + * Iterator for the descriptors field in a atsc_tvct_channel structure. + * + * @param channel atsc_tvct_channel pointer. + * @param pos Variable containing a pointer to the current descriptor. + */ +#define atsc_tvct_channel_descriptors_for_each(channel, pos) \ + for ((pos) = atsc_tvct_channel_descriptors_first(channel); \ + (pos); \ + (pos) = atsc_tvct_channel_descriptors_next(channel, pos)) + +/** + * Accessor for the second part of an atsc_tvct_section. + * + * @param mgt atsc_tvct_section pointer. + * @return atsc_tvct_section_part2 pointer. + */ +static inline struct atsc_tvct_section_part2 * + atsc_tvct_section_part2(struct atsc_tvct_section *mgt) +{ + int pos = sizeof(struct atsc_tvct_section); + + struct atsc_tvct_channel *cur_channel; + int idx; + atsc_tvct_section_channels_for_each(mgt, cur_channel, idx) { + pos += sizeof(struct atsc_tvct_channel); + pos += cur_channel->descriptors_length; + } + + return (struct atsc_tvct_section_part2 *) (((uint8_t*) mgt) + pos); +} + +/** + * Iterator for the descriptors field in a atsc_tvct_section structure. + * + * @param part2 atsc_tvct_section_part2 pointer. + * @param pos Variable containing a pointer to the current descriptor. + */ +#define atsc_tvct_section_part2_descriptors_for_each(part2, pos) \ + for ((pos) = atsc_tvct_section_part2_descriptors_first(part2); \ + (pos); \ + (pos) = atsc_tvct_section_part2_descriptors_next(part2, pos)) + + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct atsc_tvct_channel * + atsc_tvct_section_channels_first(struct atsc_tvct_section *tvct) +{ + size_t pos = sizeof(struct atsc_tvct_section); + + if (tvct->num_channels_in_section == 0) + return NULL; + + return (struct atsc_tvct_channel*) (((uint8_t *) tvct) + pos); +} + +static inline struct atsc_tvct_channel * + atsc_tvct_section_channels_next(struct atsc_tvct_section *tvct, + struct atsc_tvct_channel *pos, + int idx) +{ + if (idx >= tvct->num_channels_in_section) + return NULL; + + return (struct atsc_tvct_channel *) + (((uint8_t*) pos) + sizeof(struct atsc_tvct_channel) + pos->descriptors_length); +} + +static inline struct descriptor * + atsc_tvct_channel_descriptors_first(struct atsc_tvct_channel *channel) +{ + size_t pos = sizeof(struct atsc_tvct_channel); + + if (channel->descriptors_length == 0) + return NULL; + + return (struct descriptor*) (((uint8_t *) channel) + pos); +} + +static inline struct descriptor * + atsc_tvct_channel_descriptors_next(struct atsc_tvct_channel *channel, + struct descriptor *pos) +{ + return next_descriptor((uint8_t*) channel + sizeof(struct atsc_tvct_channel), + channel->descriptors_length, + pos); +} + +static inline struct descriptor * + atsc_tvct_section_part2_descriptors_first(struct atsc_tvct_section_part2 *part2) +{ + size_t pos = sizeof(struct atsc_tvct_section_part2); + + if (part2->descriptors_length == 0) + return NULL; + + return (struct descriptor*) (((uint8_t *) part2) + pos); +} + +static inline struct descriptor * + atsc_tvct_section_part2_descriptors_next(struct atsc_tvct_section_part2 *part2, + struct descriptor *pos) +{ + return next_descriptor((uint8_t*) part2 + sizeof(struct atsc_tvct_section_part2), + part2->descriptors_length, + pos); +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/atsc/types.c b/lib/libucsi/atsc/types.c new file mode 100644 index 0000000..8f4b7ea --- /dev/null +++ b/lib/libucsi/atsc/types.c @@ -0,0 +1,71 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <string.h> +#include "libucsi/atsc/types.h" + +/* GPS epoch == unix time_t at 06/Jan/1980 */ +#define GPS_EPOCH 315964800 + + +int atsc_text_validate(uint8_t *buf, int len) +{ + int i; + int j; + int number_strings; + int number_segments; + int number_bytes; + int pos = 0; + + if (len == 0) + return 0; + number_strings = buf[pos]; + pos++; + + for(i=0; i< number_strings; i++) { + if (len < (pos+4)) + return -1; + number_segments = buf[pos+3]; + pos+=4; + + for(j=0; j < number_segments; j++) { + if (len < (pos+3)) + return -1; + number_bytes = buf[pos+2]; + pos+=3; + + if (len < (pos + number_bytes)) + return -1; + pos += number_bytes; + } + } + + return 0; +} + +time_t atsctime_to_unixtime(atsctime_t atsc) +{ + return atsc + GPS_EPOCH; +} + +atsctime_t unixtime_to_atsctime(time_t t) +{ + return t - GPS_EPOCH; +} diff --git a/lib/libucsi/atsc/types.h b/lib/libucsi/atsc/types.h new file mode 100644 index 0000000..4d4b802 --- /dev/null +++ b/lib/libucsi/atsc/types.h @@ -0,0 +1,227 @@ + /* + * section and descriptor parser + * + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_ATSC_TYPES_H +#define _UCSI_ATSC_TYPES_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <stdint.h> +#include <time.h> +#include <libucsi/types.h> + +enum atsc_vct_modulation { + ATSC_VCT_MODULATION_ANALOG = 0x01, + ATSC_VCT_MODULATION_SCTE_MODE1 = 0x02, + ATSC_VCT_MODULATION_SCTE_MODE2 = 0x03, + ATSC_VCT_MODULATION_8VSB = 0x04, + ATSC_VCT_MODULATION_16VSB = 0x05, +}; + +enum atsc_vct_service_type { + ATSC_VCT_SERVICE_TYPE_ANALOG = 0x01, + ATSC_VCT_SERVICE_TYPE_TV = 0x02, + ATSC_VCT_SERVICE_TYPE_AUDIO = 0x03, + ATSC_VCT_SERVICE_TYPE_DATA = 0x04, +}; + +enum atsc_etm_location { + ATSC_VCT_ETM_NONE = 0x00, + ATSC_VCT_ETM_IN_THIS_PTC = 0x01, + ATSC_VCT_ETM_IN_CHANNEL_TSID = 0x02, +}; + +enum atsc_text_compress_type { + ATSC_TEXT_COMPRESS_NONE = 0x00, + ATSC_TEXT_COMPRESS_PROGRAM_TITLE = 0x01, + ATSC_TEXT_COMPRESS_PROGRAM_DESCRIPTION = 0x02, +}; + +enum atsc_text_segment_mode { + ATSC_TEXT_SEGMENT_MODE_UNICODE_RANGE_MIN = 0x00, + ATSC_TEXT_SEGMENT_MODE_UNICODE_RANGE_MAX = 0x33, + ATSC_TEXT_SEGMENT_MODE_SCSU = 0x3e, + ATSC_TEXT_SEGMENT_MODE_UTF16 = 0x3f, + ATSC_TEXT_SEGMENT_MODE_TAIWAN_BITMAP = 0x40, + ATSC_TEXT_SEGMENT_MODE_TAIWAN_CODEWORD_BITMAP = 0x41, +}; + +typedef uint32_t atsctime_t; + +struct atsc_text { + uint8_t number_strings; + /* struct atsc_text_string strings[] */ +}; + +struct atsc_text_string { + iso639lang_t language_code; + uint8_t number_segments; + /* struct atsc_text_string_segment segments[] */ +}; + +struct atsc_text_string_segment { + uint8_t compression_type; + uint8_t mode; + uint8_t number_bytes; + /* uint8_t bytes[] */ +}; + +/** + * Iterator for strings field of an atsc_text structure. + * + * @param txt atsc_text pointer. + * @param pos Variable holding a pointer to the current atsc_text_string. + * @param idx Iterator variable. + */ +#define atsc_text_strings_for_each(txt, pos, idx) \ + for ((pos) = atsc_text_strings_first(txt), idx=0; \ + (pos); \ + (pos) = atsc_text_strings_next(txt, pos, ++idx)) + +/** + * Iterator for segments field of an atsc_text_string structure. + * + * @param str atsc_text_string pointer. + * @param pos Variable holding a pointer to the current atsc_text_string_segment. + * @param idx Iterator variable. + */ +#define atsc_text_string_segments_for_each(str, pos, idx) \ + for ((pos) = atsc_text_string_segments_first(str), idx=0; \ + (pos); \ + (pos) = atsc_text_string_segments_next(str, pos, ++idx)) + +/** + * Accessor for the bytes field of an atsc_text_string_segment. + * + * @param seg atsc_text_string_segment pointer. + * @return Pointer to the bytes. + */ +static inline uint8_t* + atsc_text_string_segment_bytes(struct atsc_text_string_segment *d) +{ + return ((uint8_t*) d) + sizeof(struct atsc_text_string_segment); +} + +/** + * Validate a buffer containing an atsc_text structure. + * + * @param buf Start of the atsc_text structure. + * @param len Length in bytes of the buffer. + * @return 0 if valid, nonzero if not. + */ +extern int atsc_text_validate(uint8_t *buf, int len); + +/** + * Decodes an atsc_text_segment with mode < 0x3e. Decompression of the ATSC text encoding IS + * supported. The output text will be in the UTF-8 encoding. + * + * @param segment Pointer to the segment to decode. + * @param destbuf Pointer to the malloc()ed buffer to append text to (pass NULL if none). + * @param destbufsize Size of destbuf in bytes. + * @param destbufpos Position within destbuf. This will be updated to point after the end of the + * string on exit. + * @return New value of destbufpos, or < 0 on error. + */ +extern int atsc_text_segment_decode(struct atsc_text_string_segment *segment, + uint8_t **destbuf, size_t *destbufsize, size_t *destbufpos); + +/** + * Convert from ATSC time to unix time_t. + * + * @param atsc ATSC time. + * @return The time value. + */ +extern time_t atsctime_to_unixtime(atsctime_t atsc); + +/** + * Convert from unix time_t to atsc time. + * + * @param t unix time_t. + * @return The atsc time value. + */ +extern atsctime_t unixtime_to_atsctime(time_t t); + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct atsc_text_string* + atsc_text_strings_first(struct atsc_text *txt) +{ + if (txt->number_strings == 0) + return NULL; + + return (struct atsc_text_string *) + ((uint8_t*) txt + sizeof(struct atsc_text)); +} + +static inline struct atsc_text_string* + atsc_text_strings_next(struct atsc_text *txt, struct atsc_text_string *pos, int idx) +{ + int i; + uint8_t *buf; + + if (idx >= txt->number_strings) + return NULL; + + buf = ((uint8_t*) pos) + sizeof(struct atsc_text_string); + for(i=0; i < pos->number_segments; i++) { + struct atsc_text_string_segment *seg = + (struct atsc_text_string_segment *) buf; + + buf += sizeof(struct atsc_text_string_segment); + buf += seg->number_bytes; + } + + return (struct atsc_text_string *) buf; +} + +static inline struct atsc_text_string_segment* + atsc_text_string_segments_first(struct atsc_text_string *str) +{ + if (str->number_segments == 0) + return NULL; + + return (struct atsc_text_string_segment *) + ((uint8_t*) str + sizeof(struct atsc_text_string)); +} + +static inline struct atsc_text_string_segment* + atsc_text_string_segments_next(struct atsc_text_string *str, + struct atsc_text_string_segment *pos, int idx) +{ + if (idx >= str->number_segments) + return NULL; + + return (struct atsc_text_string_segment *) + (((uint8_t*) pos) + sizeof(struct atsc_text_string_segment) + pos->number_bytes); +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/crc32.c b/lib/libucsi/crc32.c new file mode 100644 index 0000000..dc1de5c --- /dev/null +++ b/lib/libucsi/crc32.c @@ -0,0 +1,89 @@ +/** + * crc32 calculation routines. + * + * Copyright (c) 2005 by Andrew de Quincey <adq_dvb@lidskialf.net> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <stdint.h> + +uint32_t crc32tbl[] = +{ + 0x00000000, 0x04c11db7, 0x09823b6e, 0x0d4326d9, + 0x130476dc, 0x17c56b6b, 0x1a864db2, 0x1e475005, + 0x2608edb8, 0x22c9f00f, 0x2f8ad6d6, 0x2b4bcb61, + 0x350c9b64, 0x31cd86d3, 0x3c8ea00a, 0x384fbdbd, + 0x4c11db70, 0x48d0c6c7, 0x4593e01e, 0x4152fda9, + 0x5f15adac, 0x5bd4b01b, 0x569796c2, 0x52568b75, + 0x6a1936c8, 0x6ed82b7f, 0x639b0da6, 0x675a1011, + 0x791d4014, 0x7ddc5da3, 0x709f7b7a, 0x745e66cd, + 0x9823b6e0, 0x9ce2ab57, 0x91a18d8e, 0x95609039, + 0x8b27c03c, 0x8fe6dd8b, 0x82a5fb52, 0x8664e6e5, + 0xbe2b5b58, 0xbaea46ef, 0xb7a96036, 0xb3687d81, + 0xad2f2d84, 0xa9ee3033, 0xa4ad16ea, 0xa06c0b5d, + 0xd4326d90, 0xd0f37027, 0xddb056fe, 0xd9714b49, + 0xc7361b4c, 0xc3f706fb, 0xceb42022, 0xca753d95, + 0xf23a8028, 0xf6fb9d9f, 0xfbb8bb46, 0xff79a6f1, + 0xe13ef6f4, 0xe5ffeb43, 0xe8bccd9a, 0xec7dd02d, + 0x34867077, 0x30476dc0, 0x3d044b19, 0x39c556ae, + 0x278206ab, 0x23431b1c, 0x2e003dc5, 0x2ac12072, + 0x128e9dcf, 0x164f8078, 0x1b0ca6a1, 0x1fcdbb16, + 0x018aeb13, 0x054bf6a4, 0x0808d07d, 0x0cc9cdca, + 0x7897ab07, 0x7c56b6b0, 0x71159069, 0x75d48dde, + 0x6b93dddb, 0x6f52c06c, 0x6211e6b5, 0x66d0fb02, + 0x5e9f46bf, 0x5a5e5b08, 0x571d7dd1, 0x53dc6066, + 0x4d9b3063, 0x495a2dd4, 0x44190b0d, 0x40d816ba, + 0xaca5c697, 0xa864db20, 0xa527fdf9, 0xa1e6e04e, + 0xbfa1b04b, 0xbb60adfc, 0xb6238b25, 0xb2e29692, + 0x8aad2b2f, 0x8e6c3698, 0x832f1041, 0x87ee0df6, + 0x99a95df3, 0x9d684044, 0x902b669d, 0x94ea7b2a, + 0xe0b41de7, 0xe4750050, 0xe9362689, 0xedf73b3e, + 0xf3b06b3b, 0xf771768c, 0xfa325055, 0xfef34de2, + 0xc6bcf05f, 0xc27dede8, 0xcf3ecb31, 0xcbffd686, + 0xd5b88683, 0xd1799b34, 0xdc3abded, 0xd8fba05a, + 0x690ce0ee, 0x6dcdfd59, 0x608edb80, 0x644fc637, + 0x7a089632, 0x7ec98b85, 0x738aad5c, 0x774bb0eb, + 0x4f040d56, 0x4bc510e1, 0x46863638, 0x42472b8f, + 0x5c007b8a, 0x58c1663d, 0x558240e4, 0x51435d53, + 0x251d3b9e, 0x21dc2629, 0x2c9f00f0, 0x285e1d47, + 0x36194d42, 0x32d850f5, 0x3f9b762c, 0x3b5a6b9b, + 0x0315d626, 0x07d4cb91, 0x0a97ed48, 0x0e56f0ff, + 0x1011a0fa, 0x14d0bd4d, 0x19939b94, 0x1d528623, + 0xf12f560e, 0xf5ee4bb9, 0xf8ad6d60, 0xfc6c70d7, + 0xe22b20d2, 0xe6ea3d65, 0xeba91bbc, 0xef68060b, + 0xd727bbb6, 0xd3e6a601, 0xdea580d8, 0xda649d6f, + 0xc423cd6a, 0xc0e2d0dd, 0xcda1f604, 0xc960ebb3, + 0xbd3e8d7e, 0xb9ff90c9, 0xb4bcb610, 0xb07daba7, + 0xae3afba2, 0xaafbe615, 0xa7b8c0cc, 0xa379dd7b, + 0x9b3660c6, 0x9ff77d71, 0x92b45ba8, 0x9675461f, + 0x8832161a, 0x8cf30bad, 0x81b02d74, 0x857130c3, + 0x5d8a9099, 0x594b8d2e, 0x5408abf7, 0x50c9b640, + 0x4e8ee645, 0x4a4ffbf2, 0x470cdd2b, 0x43cdc09c, + 0x7b827d21, 0x7f436096, 0x7200464f, 0x76c15bf8, + 0x68860bfd, 0x6c47164a, 0x61043093, 0x65c52d24, + 0x119b4be9, 0x155a565e, 0x18197087, 0x1cd86d30, + 0x029f3d35, 0x065e2082, 0x0b1d065b, 0x0fdc1bec, + 0x3793a651, 0x3352bbe6, 0x3e119d3f, 0x3ad08088, + 0x2497d08d, 0x2056cd3a, 0x2d15ebe3, 0x29d4f654, + 0xc5a92679, 0xc1683bce, 0xcc2b1d17, 0xc8ea00a0, + 0xd6ad50a5, 0xd26c4d12, 0xdf2f6bcb, 0xdbee767c, + 0xe3a1cbc1, 0xe760d676, 0xea23f0af, 0xeee2ed18, + 0xf0a5bd1d, 0xf464a0aa, 0xf9278673, 0xfde69bc4, + 0x89b8fd09, 0x8d79e0be, 0x803ac667, 0x84fbdbd0, + 0x9abc8bd5, 0x9e7d9662, 0x933eb0bb, 0x97ffad0c, + 0xafb010b1, 0xab710d06, 0xa6322bdf, 0xa2f33668, + 0xbcb4666d, 0xb8757bda, 0xb5365d03, 0xb1f740b4 +}; diff --git a/lib/libucsi/crc32.h b/lib/libucsi/crc32.h new file mode 100644 index 0000000..7d781ce --- /dev/null +++ b/lib/libucsi/crc32.h @@ -0,0 +1,58 @@ +/** + * crc32 calculation routines. + * + * Copyright (c) 2005 by Andrew de Quincey <adq_dvb@lidskialf.net> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_CRC32_H +#define _UCSI_CRC32_H 1 + +#include <stdint.h> + +#ifdef __cplusplus +extern "C" +{ +#endif + +#define CRC32_INIT (~0) + +extern uint32_t crc32tbl[]; + +/** + * Calculate a CRC32 over a piece of data. + * + * @param crc Current CRC value (use CRC32_INIT for first call). + * @param buf Buffer to calculate over. + * @param len Number of bytes. + * @return Calculated CRC. + */ +static inline uint32_t crc32(uint32_t crc, uint8_t* buf, size_t len) +{ + size_t i; + + for (i=0; i< len; i++) { + crc = (crc << 8) ^ crc32tbl[((crc >> 24) ^ buf[i]) & 0xff]; + } + + return crc; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/descriptor.h b/lib/libucsi/descriptor.h new file mode 100644 index 0000000..606e45d --- /dev/null +++ b/lib/libucsi/descriptor.h @@ -0,0 +1,129 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DESCRIPTOR_H +#define _UCSI_DESCRIPTOR_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/endianops.h> +#include <stdint.h> +#include <stdlib.h> + +/** + * Generic descriptor header. + */ +struct descriptor { + uint8_t tag; + uint8_t len; +} __ucsi_packed; + +/** + * Retreive pointer to the next descriptor structure. + * + * @param buf The buffer of descriptors. + * @param len Size of the buffer. + * @param pos Current descriptor. + * @return Pointer to next descriptor, or NULL if there are none. + */ +static inline struct descriptor * + next_descriptor(uint8_t * buf, size_t len, struct descriptor * pos) +{ + uint8_t* next; + + if (pos == NULL) + return NULL; + + next = (uint8_t*) pos + 2 + pos->len; + if (next >= buf + len) + return NULL; + + return (struct descriptor *) next; +} + + +/** + * The unknown descriptor. + */ +struct unknown_descriptor { + struct descriptor d; + + /* uint8_t data [] */ +} __ucsi_packed; + +/** + * Retrieve pointer to the unknown descriptor's data field. + * + * @param d The descriptor. + * @return Pointer to the data field. + */ +static inline uint8_t * + unknown_descriptor_data(struct unknown_descriptor *d) +{ + return (uint8_t *) d + sizeof(struct unknown_descriptor); +} + +/** + * Retrieve size of unknown descriptor's data field. + * + * @param d The descriptor. + * @return Size of data field in bytes. + */ +static inline int + unknown_descriptor_data_size(struct unknown_descriptor *d) +{ + return d->d.len; +} + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline int verify_descriptors(uint8_t * buf, size_t len) +{ + size_t pos = 0; + + while (pos < len) { + if ((pos + 2) > len) + return -1; + + pos += 2 + buf[pos+1]; + } + + if (pos != len) + return -1; + + return 0; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/Makefile b/lib/libucsi/dvb/Makefile new file mode 100644 index 0000000..78876dc --- /dev/null +++ b/lib/libucsi/dvb/Makefile @@ -0,0 +1,121 @@ +# Makefile for linuxtv.org dvb-apps/lib/libucsi/dvb + +.PHONY: sub-error-dvb + +sub-error-dvb: + $(error You can't use this makefile directly.) + +ifneq ($(lib_name),) + +objects += dvb/bat_section.o \ + dvb/dit_section.o \ + dvb/eit_section.o \ + dvb/int_section.o \ + dvb/nit_section.o \ + dvb/rst_section.o \ + dvb/sdt_section.o \ + dvb/sit_section.o \ + dvb/st_section.o \ + dvb/tdt_section.o \ + dvb/tot_section.o \ + dvb/tva_container_section.o \ + dvb/types.o + +sub-install += dvb + +else + +includes = ac3_descriptor.h \ + adaptation_field_data_descriptor.h \ + ait_application_descriptor.h \ + ait_application_icons_descriptor.h \ + ait_application_name_descriptor.h \ + ait_external_application_authorisation_descriptor.h \ + ancillary_data_descriptor.h \ + announcement_support_descriptor.h \ + application_signalling_descriptor.h \ + bat_section.h \ + bouquet_name_descriptor.h \ + ca_identifier_descriptor.h \ + cable_delivery_descriptor.h \ + cell_frequency_link_descriptor.h \ + cell_list_descriptor.h \ + component_descriptor.h \ + content_descriptor.h \ + content_identifier_descriptor.h \ + country_availability_descriptor.h \ + data_broadcast_descriptor.h \ + data_broadcast_id_descriptor.h \ + default_authority_descriptor.h \ + descriptor.h \ + dit_section.h \ + dsng_descriptor.h \ + eit_section.h \ + extended_event_descriptor.h \ + frequency_list_descriptor.h \ + int_section.h \ + ip_mac_platform_name_descriptor.h \ + ip_mac_platform_provider_name_descriptor.h \ + ip_mac_stream_location_descriptor.h \ + linkage_descriptor.h \ + local_time_offset_descriptor.h \ + mhp_data_broadcast_id_descriptor.h \ + mosaic_descriptor.h \ + multilingual_bouquet_name_descriptor.h \ + multilingual_component_descriptor.h \ + multilingual_network_name_descriptor.h \ + multilingual_service_name_descriptor.h \ + network_name_descriptor.h \ + nit_section.h \ + nvod_reference_descriptor.h \ + parental_rating_descriptor.h \ + partial_transport_stream_descriptor.h \ + pdc_descriptor.h \ + private_data_specifier_descriptor.h \ + related_content_descriptor.h \ + rnt_rar_over_dvb_stream_descriptor.h \ + rnt_rar_over_ip_descriptor.h \ + rnt_rnt_scan_descriptor.h \ + rst_section.h \ + s2_satellite_delivery_descriptor.h \ + satellite_delivery_descriptor.h \ + scrambling_descriptor.h \ + sdt_section.h \ + section.h \ + service_availability_descriptor.h \ + service_descriptor.h \ + service_identifier_descriptor.h \ + service_list_descriptor.h \ + service_move_descriptor.h \ + short_event_descriptor.h \ + short_smoothing_buffer_descriptor.h \ + sit_section.h \ + st_section.h \ + stream_identifier_descriptor.h \ + stuffing_descriptor.h \ + subtitling_descriptor.h \ + target_ip_address_descriptor.h \ + target_ipv6_address_descriptor.h \ + target_ip_slash_descriptor.h \ + target_ip_source_slash_descriptor.h \ + target_ipv6_slash_descriptor.h \ + target_ipv6_source_slash_descriptor.h \ + tdt_section.h \ + telephone_descriptor.h \ + teletext_descriptor.h \ + terrestrial_delivery_descriptor.h \ + time_shifted_event_descriptor.h \ + time_shifted_service_descriptor.h \ + tot_section.h \ + transport_stream_descriptor.h \ + tva_container_section.h \ + tva_id_descriptor.h \ + types.h \ + vbi_data_descriptor.h \ + vbi_teletext_descriptor.h + +include ../../../Make.rules + +lib_name = libucsi/dvb + +endif diff --git a/lib/libucsi/dvb/ac3_descriptor.h b/lib/libucsi/dvb/ac3_descriptor.h new file mode 100644 index 0000000..0a2a5cd --- /dev/null +++ b/lib/libucsi/dvb/ac3_descriptor.h @@ -0,0 +1,88 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_AC3_DESCRIPTOR +#define _UCSI_DVB_AC3_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_ac3_descriptor structure. + */ +struct dvb_ac3_descriptor { + struct descriptor d; + + EBIT5(uint8_t ac3_type_flag : 1; , + uint8_t bsid_flag : 1; , + uint8_t mainid_flag : 1; , + uint8_t asvc_flag : 1; , + uint8_t reserved : 4; ); + /* uint8_t additional_info[] */ +} __ucsi_packed; + +/** + * Process a dvb_ac3_descriptor. + * + * @param d Generic descriptor structure. + * @return dvb_ac3_descriptor pointer, or NULL on error. + */ +static inline struct dvb_ac3_descriptor* + dvb_ac3_descriptor_codec(struct descriptor* d) +{ + if (d->len < (sizeof(struct dvb_ac3_descriptor) - 2)) + return NULL; + + return (struct dvb_ac3_descriptor*) d; +} + +/** + * Retrieve pointer to additional_info field of a dvb_ac3_descriptor. + * + * @param d dvb_ac3_descriptor pointer. + * @return Pointer to additional_info field. + */ +static inline uint8_t *dvb_ac3_descriptor_additional_info(struct dvb_ac3_descriptor *d) +{ + return (uint8_t *) d + sizeof(struct dvb_ac3_descriptor); +} + +/** + * Determine length of additional_info field of a dvb_ac3_descriptor. + * + * @param d dvb_ac3_descriptor pointer. + * @return Length of field in bytes. + */ +static inline int dvb_ac3_descriptor_additional_info_length(struct dvb_ac3_descriptor *d) +{ + return d->d.len - 1; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/adaptation_field_data_descriptor.h b/lib/libucsi/dvb/adaptation_field_data_descriptor.h new file mode 100644 index 0000000..b207054 --- /dev/null +++ b/lib/libucsi/dvb/adaptation_field_data_descriptor.h @@ -0,0 +1,62 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_ADAPTATION_FIELD_DATA_DESCRIPTOR +#define _UCSI_DVB_ADAPTATION_FIELD_DATA_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_adaptation_field_data_descriptor structure. + */ +struct dvb_adaptation_field_data_descriptor { + struct descriptor d; + + EBIT2(uint8_t reserved : 7; , + uint8_t announcement_switching_data : 1; ); +} __ucsi_packed; + +/** + * Process a dvb_adaptation_field_data_descriptor. + * + * @param d Generic descriptor structure. + * @return Pointer to dvb_adaptation_field_data_descriptor, or NULL on error. + */ +static inline struct dvb_adaptation_field_data_descriptor* + dvb_adaptation_field_data_descriptor_codec(struct descriptor* d) +{ + if (d->len != (sizeof(struct dvb_adaptation_field_data_descriptor) - 2)) + return NULL; + + return (struct dvb_adaptation_field_data_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/ait_application_descriptor.h b/lib/libucsi/dvb/ait_application_descriptor.h new file mode 100644 index 0000000..95fb7e3 --- /dev/null +++ b/lib/libucsi/dvb/ait_application_descriptor.h @@ -0,0 +1,204 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_AIT_APPLICATION_DESCRIPTOR +#define _UCSI_DVB_AIT_APPLICATION_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * Possible values for the visibility field. + */ +enum { + AVB_AIT_APPLICATION_VISIBILITY_HIDDEN = 0x00, + AVB_AIT_APPLICATION_VISIBILITY_APPSONLY = 0x01, + AVB_AIT_APPLICATION_VISIBILITY_VISIBLE = 0x03, +}; + +/** + * dvb_ait_application_descriptor structure. + */ +struct dvb_ait_application_descriptor { + struct descriptor d; + + uint8_t application_profiles_length; + /* struct dvb_ait_application_profile profiles [] */ + /* struct dvb_ait_application_descriptor_part2 part2 */ +} __ucsi_packed; + +/** + * An entry in the profiles field of a dvb_ait_application_descriptor. + */ +struct dvb_ait_application_profile { + uint16_t application_profile; + uint8_t version_major; + uint8_t version_minor; + uint8_t version_micro; +} __ucsi_packed; + +/** + * Second part of a dvb_ait_application_descriptor structure. + */ +struct dvb_ait_application_descriptor_part2 { + EBIT3(uint8_t service_bound_flag : 1; , + uint8_t visibility : 2; , + uint8_t reserved : 5; ); + uint8_t application_priority; + /* uint8_t transport_protocol_label[] */ +} __ucsi_packed; + +/** + * Process a dvb_ait_application_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_ait_application_descriptor pointer, or NULL on error. + */ +static inline struct dvb_ait_application_descriptor* + dvb_ait_application_descriptor_codec(struct descriptor* d) +{ + uint32_t pos = 0; + uint32_t pos2 = 0; + uint32_t len = d->len + 2; + uint8_t* buf = (uint8_t*) d; + struct dvb_ait_application_descriptor *ret = + (struct dvb_ait_application_descriptor*) d; + + if (len < sizeof(struct dvb_ait_application_descriptor)) + return NULL; + + if (len < (sizeof(struct dvb_ait_application_descriptor) + ret->application_profiles_length)) + return NULL; + + if (ret->application_profiles_length % sizeof(struct dvb_ait_application_profile)) + return NULL; + + pos += sizeof(struct dvb_ait_application_descriptor); + pos2 = 0; + while(pos2 < ret->application_profiles_length) { + bswap16(buf + pos + pos2); + pos2 += sizeof(struct dvb_ait_application_descriptor); + } + pos += pos2; + + if (len < (pos + sizeof(struct dvb_ait_application_descriptor_part2))) + return NULL; + + return ret; +} + +/** + * Iterator for the profiles field of a dvb_ait_application_descriptor. + * + * @param d dvb_ait_application_descriptor pointer. + * @param pos Variable containing a pointer to the current dvb_ait_application_profile. + */ +#define dvb_ait_application_descriptor_profiles_for_each(d, pos) \ + for ((pos) = dvb_ait_application_descriptor_profiles_first(d); \ + (pos); \ + (pos) = dvb_ait_application_descriptor_profiles_next(d, pos)) + +/** + * Accessor for the part2 field of a dvb_ait_application_descriptor. + * + * @param d dvb_ait_application_descriptor pointer. + * @return dvb_ait_application_descriptor_part2 pointer. + */ +static inline struct dvb_ait_application_descriptor_part2* + dvb_ait_application_descriptor_part2(struct dvb_ait_application_descriptor* d) +{ + return (struct dvb_ait_application_descriptor_part2*) + ((uint8_t*) d + + sizeof(struct dvb_ait_application_descriptor) + + d->application_profiles_length); +} + +/** + * Accessor for the transport_protocol_label field of a dvb_ait_application_descriptor_part2. + * + * @param d dvb_ait_application_descriptor_part2 pointer. + * @return Pointer to the field. + */ +static inline uint8_t* + dvb_ait_application_descriptor_part2_transport_protocol_label(struct dvb_ait_application_descriptor_part2* d) +{ + return (uint8_t*) d + + sizeof(struct dvb_ait_application_descriptor_part2); +} + +/** + * Calculate the number of bytes in the transport_protocol_label field of a dvb_ait_application_descriptor_part2. + * + * @param d dvb_ait_application_descriptor pointer. + * @param part2 dvb_ait_application_descriptor_part2 pointer. + * @return Number of bytes. + */ +static inline int + dvb_ait_application_descriptor_part2_transport_protocol_label_length(struct dvb_ait_application_descriptor *d, + struct dvb_ait_application_descriptor_part2* part2) +{ + uint8_t *ptr = (uint8_t*) part2 + sizeof(struct dvb_ait_application_descriptor_part2); + uint8_t *end = (uint8_t*) d + d->d.len + 2; + + return (int) (end - ptr); +} + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_ait_application_profile* + dvb_ait_application_descriptor_profiles_first(struct dvb_ait_application_descriptor *d) +{ + if (d->application_profiles_length == 0) + return NULL; + + return (struct dvb_ait_application_profile *) + ((uint8_t*) d + sizeof(struct dvb_ait_application_descriptor)); +} + +static inline struct dvb_ait_application_profile* + dvb_ait_application_descriptor_profiles_next(struct dvb_ait_application_descriptor *d, + struct dvb_ait_application_profile *pos) +{ + uint8_t *end = (uint8_t*) d + + sizeof(struct dvb_ait_application_descriptor) + + d->application_profiles_length; + uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_ait_application_profile); + + if (next >= end) + return NULL; + + return (struct dvb_ait_application_profile *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/ait_application_icons_descriptor.h b/lib/libucsi/dvb/ait_application_icons_descriptor.h new file mode 100644 index 0000000..431cd6c --- /dev/null +++ b/lib/libucsi/dvb/ait_application_icons_descriptor.h @@ -0,0 +1,157 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_AIT_APPLICATION_ICONS_DESCRIPTOR +#define _UCSI_DVB_AIT_APPLICATION_ICONS_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +/** + * Possible values for the icon_flags field. + */ +enum { + AIT_APPLICATION_ICON_FLAG_32_32 = 0x001, + AIT_APPLICATION_ICON_FLAG_32_32_43 = 0x002, + AIT_APPLICATION_ICON_FLAG_24_32_169 = 0x004, + + AIT_APPLICATION_ICON_FLAG_64_64 = 0x008, + AIT_APPLICATION_ICON_FLAG_64_64_43 = 0x010, + AIT_APPLICATION_ICON_FLAG_48_64_169 = 0x020, + + AIT_APPLICATION_ICON_FLAG_128_128 = 0x040, + AIT_APPLICATION_ICON_FLAG_128_128_43 = 0x080, + AIT_APPLICATION_ICON_FLAG_96_128_169 = 0x100, +}; + +/** + * dvb_ait_application_icons_descriptor structure. + */ +struct dvb_ait_application_icons_descriptor { + struct descriptor d; + + uint8_t icon_locator_length; + /* uint8_t icon_locator[] */ + /* struct dvb_ait_application_icons_descriptor_part2 */ +} __ucsi_packed; + +/** + * Second part of a dvb_ait_application_icons_descriptor. + */ +struct dvb_ait_application_icons_descriptor_part2 { + uint16_t icon_flags; + /* uint8_t reserved[] */ +} __ucsi_packed; + +/** + * Process a dvb_ait_application_icons_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_ait_application_icons_descriptor pointer, or NULL on error. + */ +static inline struct dvb_ait_application_icons_descriptor* + dvb_ait_application_icons_descriptor_codec(struct descriptor* d) +{ + uint8_t* buf = (uint8_t*) d; + uint32_t pos = 0; + uint32_t len = d->len + 2; + struct dvb_ait_application_icons_descriptor *ret = + (struct dvb_ait_application_icons_descriptor *) d; + + if (len < sizeof(struct dvb_ait_application_icons_descriptor)) + return NULL; + if (len < (sizeof(struct dvb_ait_application_icons_descriptor) + ret->icon_locator_length)) + return NULL; + + pos += sizeof(struct dvb_ait_application_icons_descriptor) + ret->icon_locator_length; + + if ((len - pos) < sizeof(struct dvb_ait_application_icons_descriptor_part2)) + return NULL; + bswap16(buf + pos); + + return ret; +} +/** + * Accessor for the icon_locator field of a dvb_ait_application_icons_descriptor. + * + * @param e dvb_ait_application_icons_descriptor pointer. + * @return Pointer to the field. + */ +static inline uint8_t * + dvb_ait_application_icons_descriptor_icon_locator(struct dvb_ait_application_icons_descriptor *e) +{ + return (uint8_t *) e + sizeof(struct dvb_ait_application_icons_descriptor); +} + +/** + * Accessor for the part2 field of a dvb_ait_application_icons_descriptor. + * + * @param e dvb_ait_application_icons_descriptor Pointer. + * @return dvb_ait_application_icons_descriptor_part2 pointer. + */ +static inline struct dvb_ait_application_icons_descriptor_part2 * + dvb_ait_application_icons_descriptor_part2(struct dvb_ait_application_icons_descriptor *e) +{ + return (struct dvb_ait_application_icons_descriptor_part2 *) + ((uint8_t *) e + sizeof(struct dvb_ait_application_icons_descriptor) + + e->icon_locator_length); +} + +/** + * Accessor for the reserved field of a dvb_ait_application_icons_descriptor_part2. + * + * @param e dvb_ait_application_icons_part2 pointer. + * @return Pointer to the field. + */ +static inline uint8_t * + dvb_ait_application_icons_descriptor_part2_reserved(struct dvb_ait_application_icons_descriptor_part2 *e) +{ + return (uint8_t *) e + sizeof(struct dvb_ait_application_icons_descriptor_part2); +} + +/** + * Calculate the number of bytes in the reserved field of a dvb_ait_application_icons_descriptor_part2. + * + * @param d dvb_ait_application_icons_descriptorpointer. + * @param part2 dvb_ait_application_icons_descriptor_part2 pointer. + * @return Number of bytes. + */ +static inline int + dvb_ait_application_icons_descriptor_part2_reserved_length(struct dvb_ait_application_icons_descriptor *d, + struct dvb_ait_application_icons_descriptor_part2* part2) +{ + uint8_t *ptr = (uint8_t*) part2 + sizeof(struct dvb_ait_application_icons_descriptor_part2); + uint8_t *end = (uint8_t*) d + d->d.len + 2; + + return (int) (end - ptr); +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/ait_application_name_descriptor.h b/lib/libucsi/dvb/ait_application_name_descriptor.h new file mode 100644 index 0000000..a4b719e --- /dev/null +++ b/lib/libucsi/dvb/ait_application_name_descriptor.h @@ -0,0 +1,145 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_AIT_APPLICATION_NAME_DESCRIPTOR +#define _UCSI_DVB_AIT_APPLICATION_NAME_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +/** + * dvb_ait_application_name_descriptor structure. + */ +struct dvb_ait_application_name_descriptor { + struct descriptor d; + + /* struct dvb_ait_application_name names[] */ +} __ucsi_packed; + +/** + * An entry in the names field of a dvb_ait_application_name_descriptor. + */ +struct dvb_ait_application_name { + iso639lang_t language_code; + uint8_t application_name_length; + /* uint8_t name[] */ +} __ucsi_packed; + +/** + * Process a dvb_ait_application_name_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_ait_application_name_descriptor pointer, or NULL on error. + */ +static inline struct dvb_ait_application_name_descriptor* + dvb_ait_application_name_descriptor_codec(struct descriptor* d) +{ + uint8_t* buf = (uint8_t*) d + 2; + uint32_t pos = 0; + uint32_t len = d->len; + + while(pos < len) { + struct dvb_ait_application_name *e = + (struct dvb_ait_application_name*) (buf + pos); + + pos += sizeof(struct dvb_ait_application_name); + + if (pos > len) + return NULL; + + pos += e->application_name_length; + + if (pos > len) + return NULL; + } + + return (struct dvb_ait_application_name_descriptor*) d; +} + +/** + * Iterator for entries in the names field of a dvb_ait_application_name_descriptor. + * + * @param d dvb_ait_application_name_descriptor pointer. + * @param pos Variable containing a pointer to the current dvb_ait_application_name. + */ +#define dvb_ait_application_name_descriptor_names_for_each(d, pos) \ + for ((pos) = dvb_ait_application_name_descriptor_names_first(d); \ + (pos); \ + (pos) = dvb_ait_application_name_descriptor_names_next(d, pos)) + +/** + * Accessor for the name field of a dvb_ait_application_name. + * + * @param e dvb_ait_application_name pointer. + * @return Pointer to the name field. + */ +static inline uint8_t * + dvb_ait_application_name_name(struct dvb_ait_application_name *e) +{ + return (uint8_t *) e + sizeof(struct dvb_ait_application_name); +} + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_ait_application_name* + dvb_ait_application_name_descriptor_names_first(struct dvb_ait_application_name_descriptor *d) +{ + if (d->d.len == 0) + return NULL; + + return (struct dvb_ait_application_name *) + ((uint8_t*) d + sizeof(struct dvb_ait_application_name_descriptor)); +} + +static inline struct dvb_ait_application_name* + dvb_ait_application_name_descriptor_names_next(struct dvb_ait_application_name_descriptor *d, + struct dvb_ait_application_name *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + + sizeof(struct dvb_ait_application_name) + + pos->application_name_length; + + if (next >= end) + return NULL; + + return (struct dvb_ait_application_name *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/ait_external_application_authorisation_descriptor.h b/lib/libucsi/dvb/ait_external_application_authorisation_descriptor.h new file mode 100644 index 0000000..34f584a --- /dev/null +++ b/lib/libucsi/dvb/ait_external_application_authorisation_descriptor.h @@ -0,0 +1,125 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_AIT_EXTERNAL_APPLICATION_AUTHORISATION_DESCRIPTOR +#define _UCSI_DVB_AIT_EXTERNAL_APPLICATION_AUTHORISATION_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +/** + * dvb_ait_external_application_authorisation_descriptor structure. + */ +struct dvb_ait_external_application_authorisation_descriptor { + struct descriptor d; + + /* struct dvb_ait_external_application_authorisation auths[] */ +} __ucsi_packed; + +/** + * An entry in the auths field of a dvb_ait_external_application_authorisation_descriptor. + */ +struct dvb_ait_external_application_authorisation { + uint32_t organization_id; + uint16_t application_id; + uint8_t application_priority; +} __ucsi_packed; + +/** + * Process a dvb_ait_external_application_authorisation_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_ait_external_application_authorisation_descriptor pointer, or NULL on error. + */ +static inline struct dvb_ait_external_application_authorisation_descriptor* + dvb_ait_external_application_authorisation_descriptor_codec(struct descriptor* d) +{ + uint8_t* buf = (uint8_t*) d + 2; + uint32_t pos = 0; + uint32_t len = d->len; + + if (len % sizeof(struct dvb_ait_external_application_authorisation)) + return NULL; + + while(pos < len) { + bswap32(buf + pos); + bswap32(buf + pos + 4); + pos += sizeof(struct dvb_ait_external_application_authorisation); + } + + return (struct dvb_ait_external_application_authorisation_descriptor*) d; +} + +/** + * Iterator for entries in the auths field of a dvb_ait_external_application_authorisation_descriptor. + * + * @param d dvb_ait_external_application_authorisation_descriptor pointer. + * @param pos Variable containing a pointer to the current dvb_ait_external_application_authorisation. + */ +#define dvb_ait_external_application_authorisation_descriptor_auths_for_each(d, pos) \ + for ((pos) = dvb_ait_external_application_authorisation_descriptor_auths_first(d); \ + (pos); \ + (pos) = dvb_ait_external_application_authorisation_descriptor_auths_next(d, pos)) + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_ait_external_application_authorisation* + dvb_ait_external_application_authorisation_descriptor_auths_first(struct dvb_ait_external_application_authorisation_descriptor *d) +{ + if (d->d.len == 0) + return NULL; + + return (struct dvb_ait_external_application_authorisation *) + ((uint8_t*) d + sizeof(struct dvb_ait_external_application_authorisation_descriptor)); +} + +static inline struct dvb_ait_external_application_authorisation* + dvb_ait_external_application_authorisation_descriptor_auths_next(struct dvb_ait_external_application_authorisation_descriptor *d, + struct dvb_ait_external_application_authorisation *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + + sizeof(struct dvb_ait_external_application_authorisation); + + if (next >= end) + return NULL; + + return (struct dvb_ait_external_application_authorisation *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/ancillary_data_descriptor.h b/lib/libucsi/dvb/ancillary_data_descriptor.h new file mode 100644 index 0000000..04b2f59 --- /dev/null +++ b/lib/libucsi/dvb/ancillary_data_descriptor.h @@ -0,0 +1,67 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_ANCILLARY_DATA_DESCRIPTOR +#define _UCSI_DVB_ANCILLARY_DATA_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_ancillary_data_descriptor structure. + */ +struct dvb_ancillary_data_descriptor { + struct descriptor d; + EBIT8(uint8_t reserved : 1; , + uint8_t rds_via_udcp : 1; , + uint8_t mpeg4_ancillary_data : 1; , + uint8_t scale_factor_error_check : 1; , + uint8_t dab_ancillary_data : 1; , + uint8_t announcement_switching_data : 1; , + uint8_t extended_ancillary_data : 1; , + uint8_t dvd_video_ancillary_data : 1; ); +} __ucsi_packed; + +/** + * Process a dvb_ancillary_data_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_ancillary_data_descriptor pointer, or NULL on error. + */ +static inline struct dvb_ancillary_data_descriptor* + dvb_ancillary_data_descriptor_codec(struct descriptor* d) +{ + if (d->len != (sizeof(struct dvb_ancillary_data_descriptor) - 2)) + return NULL; + + return (struct dvb_ancillary_data_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/announcement_support_descriptor.h b/lib/libucsi/dvb/announcement_support_descriptor.h new file mode 100644 index 0000000..9eb20c4 --- /dev/null +++ b/lib/libucsi/dvb/announcement_support_descriptor.h @@ -0,0 +1,219 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_ANNOUNCEMENT_SUPPORT_DESCRIPTOR +#define _UCSI_DVB_ANNOUNCEMENT_SUPPORT_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * Possible values for announcement_support_indicator. + */ +enum { + DVB_ANNOUNCEMENT_SUPPORT_EMERGENCY = 0x01, + DVB_ANNOUNCEMENT_SUPPORT_ROAD_TRAFFIC_FLASH = 0x02, + DVB_ANNOUNCEMENT_SUPPORT_PUBLIC_TRANSPORT_FLASH = 0x04, + DVB_ANNOUNCEMENT_SUPPORT_WARNING_MESSAGE = 0x08, + DVB_ANNOUNCEMENT_SUPPORT_NEWS_FLASH = 0x10, + DVB_ANNOUNCEMENT_SUPPORT_WEATHER_FLASH = 0x20, + DVB_ANNOUNCEMENT_SUPPORT_EVENT_ANNOUNCEMENT = 0x40, + DVB_ANNOUNCEMENT_SUPPORT_PERSONAL_CALL = 0x80, +}; + +/** + * Possible values for announcement_type. + */ +enum { + DVB_ANNOUNCEMENT_TYPE_EMERGENCY = 0x00, + DVB_ANNOUNCEMENT_TYPE_ROAD_TRAFFIC_FLASH = 0x01, + DVB_ANNOUNCEMENT_TYPE_PUBLIC_TRANSPORT_FLASH = 0x02, + DVB_ANNOUNCEMENT_TYPE_WARNING_MESSAGE = 0x03, + DVB_ANNOUNCEMENT_TYPE_NEWS_FLASH = 0x04, + DVB_ANNOUNCEMENT_TYPE_WEATHER_FLASH = 0x05, + DVB_ANNOUNCEMENT_TYPE_EVENT_ANNOUNCEMENT = 0x06, + DVB_ANNOUNCEMENT_TYPE_PERSONAL_CALL = 0x07, +}; + +/** + * Possible values for reference_type. + */ +enum { + DVB_REFERENCE_TYPE_AUDIO = 0x00, + DVB_REFERENCE_TYPE_OTHER_AUDIO = 0x01, + DVB_REFERENCE_TYPE_OTHER_SERVICE = 0x02, + DVB_REFERENCE_TYPE_OTHER_TS = 0x03, +}; + +/** + * dvb_announcement_support_descriptor structure. + */ +struct dvb_announcement_support_descriptor { + struct descriptor d; + uint16_t announcement_support_indicator; + /* struct dvb_announcement_support_entry entries[] */ +} __ucsi_packed; + +/** + * An entry in the entries field of a dvb_announcement_support_descriptor. + */ +struct dvb_announcement_support_entry { + EBIT3(uint8_t announcement_type : 4; , + uint8_t reserved : 1; , + uint8_t reference_type : 3; ); + /* Only if reference_type == 1, 2 or 3: + * struct dvb_announcement_support_reference reference */ +} __ucsi_packed; + +/** + * The optional reference field only present in a dvb_announcement_support_descriptor if + * its reference_type field is 1,2 or 3. + */ +struct dvb_announcement_support_reference { + uint16_t original_network_id; + uint16_t transport_stream_id; + uint16_t service_id; + uint8_t component_tag; +} __ucsi_packed; + +/** + * Process a dvb_announcement_support_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_announcement_support_descriptor pointer, or NULL on error. + */ +static inline struct dvb_announcement_support_descriptor* + dvb_announcement_support_descriptor_codec(struct descriptor* d) +{ + uint32_t pos = 0; + uint8_t* buf = (uint8_t*) d + 2; + uint32_t len = d->len; + + if (len < (sizeof(struct dvb_announcement_support_descriptor) - 2)) + return NULL; + + bswap16(buf+pos); + + pos += 2; + + while(pos < len) { + struct dvb_announcement_support_entry *e = + (struct dvb_announcement_support_entry*) (buf+pos); + + pos += sizeof(struct dvb_announcement_support_entry); + + if (pos > len) + return NULL; + + if ((e->reference_type == 1) || + (e->reference_type == 2) || + (e->reference_type == 3)) { + if ((pos + sizeof(struct dvb_announcement_support_reference)) > len) + return NULL; + + bswap16(buf+pos); + bswap16(buf+pos+2); + bswap16(buf+pos+4); + + pos += sizeof(struct dvb_announcement_support_reference); + } + } + + return (struct dvb_announcement_support_descriptor*) d; +} + +/** + * Iterator for the entries field of a dvb_announcement_support_descriptor. + * + * @param d dvb_announcement_support_descriptor pointer. + * @param pod Variable holding a pointer to the current dvb_announcement_support_entry. + */ +#define dvb_announcement_support_descriptor_entries_for_each(d, pos) \ + for ((pos) = dvb_announcement_support_descriptor_entries_first(d); \ + (pos); \ + (pos) = dvb_announcement_support_descriptor_entries_next(d, pos)) + +/** + * Accessor for the reference field of a dvb_announcement_support_entry if present. + * + * @param entry dvb_announcement_support_entry pointer. + * @return dvb_announcement_support_reference pointer, or NULL on error. + */ +static inline struct dvb_announcement_support_reference* + dvb_announcement_support_entry_reference(struct dvb_announcement_support_entry* entry) +{ + if ((entry->reference_type != 0x01) && + (entry->reference_type != 0x02) && + (entry->reference_type != 0x03)) + return NULL; + + return (struct dvb_announcement_support_reference*) + ((uint8_t*) entry + sizeof(struct dvb_announcement_support_entry)); +} + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_announcement_support_entry* + dvb_announcement_support_descriptor_entries_first(struct dvb_announcement_support_descriptor *d) +{ + if (d->d.len == 2) + return NULL; + + return (struct dvb_announcement_support_entry *) + ((uint8_t*) d + sizeof(struct dvb_announcement_support_descriptor)); +} + +static inline struct dvb_announcement_support_entry* + dvb_announcement_support_descriptor_entries_next(struct dvb_announcement_support_descriptor *d, + struct dvb_announcement_support_entry *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t* next = (uint8_t*) pos + sizeof(struct dvb_announcement_support_entry); + struct dvb_announcement_support_reference* reference = + dvb_announcement_support_entry_reference(pos); + + if (reference) + next += sizeof(struct dvb_announcement_support_reference); + + if (next >= end) + return NULL; + + return (struct dvb_announcement_support_entry *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/application_signalling_descriptor.h b/lib/libucsi/dvb/application_signalling_descriptor.h new file mode 100644 index 0000000..78211cf --- /dev/null +++ b/lib/libucsi/dvb/application_signalling_descriptor.h @@ -0,0 +1,124 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_APPLICATION_SIGNALLING_DESCRIPTOR +#define _UCSI_DVB_APPLICATION_SIGNALLING_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_application_signalling_descriptor structure. + */ +struct dvb_application_signalling_descriptor { + struct descriptor d; + + /* struct dvb_application_signalling_entry entries[] */ +} __ucsi_packed; + +/** + * An entry in the entries field of a dvb_application_signalling_descriptor. + */ +struct dvb_application_signalling_entry { + uint16_t application_type; + EBIT2(uint8_t reserved : 3; , + uint8_t AIT_version_number : 5; ); +} __ucsi_packed; + +/** + * Process a dvb_application_signalling_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_application_signalling_descriptor pointer, or NULL on error. + */ +static inline struct dvb_application_signalling_descriptor* + dvb_application_signalling_descriptor_codec(struct descriptor* d) +{ + uint32_t pos = 0; + uint32_t len = d->len; + uint8_t* buf = (uint8_t*) d + 2; + + pos += sizeof(struct dvb_application_signalling_descriptor) - 2; + if (len % sizeof(struct dvb_application_signalling_entry)) + return NULL; + + while(pos < len) { + bswap16(buf+pos); + pos+=3; + } + + return (struct dvb_application_signalling_descriptor*) d; +} + +/** + * Iterator for the entries field of a dvb_application_signalling_descriptor. + * + * @param d dvb_application_signalling_descriptor pointer. + * @param pos Variable containing a pointer to the current dvb_application_signalling_entry. + */ +#define dvb_application_signalling_descriptor_entries_for_each(d, pos) \ + for ((pos) = dvb_application_signalling_descriptor_entries_first(d); \ + (pos); \ + (pos) = dvb_application_signalling_descriptor_entries_next(d, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_application_signalling_entry* + dvb_application_signalling_descriptor_entries_first(struct dvb_application_signalling_descriptor *d) +{ + if (d->d.len == 0) + return NULL; + + return (struct dvb_application_signalling_entry *) + ((uint8_t*) d + sizeof(struct dvb_application_signalling_descriptor)); +} + +static inline struct dvb_application_signalling_entry* + dvb_application_signalling_descriptor_entries_next(struct dvb_application_signalling_descriptor *d, + struct dvb_application_signalling_entry *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_application_signalling_entry); + + if (next >= end) + return NULL; + + return (struct dvb_application_signalling_entry *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/bat_section.c b/lib/libucsi/dvb/bat_section.c new file mode 100644 index 0000000..99e5cf6 --- /dev/null +++ b/lib/libucsi/dvb/bat_section.c @@ -0,0 +1,77 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <libucsi/dvb/bat_section.h> + +struct dvb_bat_section * dvb_bat_section_codec(struct section_ext * ext) +{ + uint8_t * buf = (uint8_t *) ext; + size_t pos = sizeof(struct section_ext); + size_t len = section_ext_length(ext); + struct dvb_bat_section * ret = (struct dvb_bat_section *) ext; + + if (len < sizeof(struct dvb_bat_section)) + return NULL; + + bswap16(buf + pos); + pos += 2; + + if ((pos + ret->bouquet_descriptors_length) > len) + return NULL; + + if (verify_descriptors(buf + pos, ret->bouquet_descriptors_length)) + return NULL; + pos += ret->bouquet_descriptors_length; + + if ((pos + sizeof(struct dvb_bat_section_part2)) > len) + return NULL; + + bswap16(buf + pos); + pos += sizeof(struct dvb_bat_section_part2); + + while (pos < len) { + struct dvb_bat_transport * transport = + (struct dvb_bat_transport *) (buf + pos); + + if ((pos + sizeof(struct dvb_bat_transport)) > len) + return NULL; + + bswap16(buf + pos); + bswap16(buf + pos + 2); + bswap16(buf + pos + 4); + + pos += sizeof(struct dvb_bat_transport); + + if ((pos + transport->transport_descriptors_length) > len) + return NULL; + + if (verify_descriptors(buf + pos, + transport->transport_descriptors_length)) + return NULL; + + pos += transport->transport_descriptors_length; + } + + if (pos != len) + return NULL; + + return ret; +} diff --git a/lib/libucsi/dvb/bat_section.h b/lib/libucsi/dvb/bat_section.h new file mode 100644 index 0000000..94ed8a4 --- /dev/null +++ b/lib/libucsi/dvb/bat_section.h @@ -0,0 +1,211 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_BAT_SECTION_H +#define _UCSI_DVB_BAT_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/section.h> + +/** + * dvb_bat_section structure. + */ +struct dvb_bat_section { + struct section_ext head; + + EBIT2(uint16_t reserved_1 : 4; , + uint16_t bouquet_descriptors_length :12; ); + /* struct descriptor descriptors[] */ + /* struct dvb_bat_section_part2 part2 */ +}; + +/** + * Second part of a dvb_bat_section, following the variable length descriptors field. + */ +struct dvb_bat_section_part2 { + EBIT2(uint16_t reserved_2 : 4; , + uint16_t transport_stream_loop_length :12; ); + /* struct dvb_bat_transport transports[] */ +} __ucsi_packed; + +/** + * An entry in the transports field of a dvb_bat_section_part2. + */ +struct dvb_bat_transport { + uint16_t transport_stream_id; + uint16_t original_network_id; + EBIT2(uint16_t reserved : 4; , + uint16_t transport_descriptors_length :12; ); + /* struct descriptor descriptors[] */ +}; + +/** + * Process a dvb_bat_section. + * + * @param section Generic section pointer. + * @return dvb_bat_section pointer, or NULL on error. + */ +struct dvb_bat_section *dvb_bat_section_codec(struct section_ext *section); + +/** + * Accessor for the bouquet_id field of a BAT. + * + * @param bat BAT pointer. + * @return The bouquet_id. + */ +static inline uint16_t dvb_bat_section_bouquet_id(struct dvb_bat_section *bat) +{ + return bat->head.table_id_ext; +} + +/** + * Iterator for the descriptors field in a dvb_bat_section. + * + * @param bat dvb_bat_section pointer. + * @param pos Variable containing a pointer to the current descriptor. + */ +#define dvb_bat_section_descriptors_for_each(bat, pos) \ + for ((pos) = dvb_bat_section_descriptors_first(bat); \ + (pos); \ + (pos) = dvb_bat_section_descriptors_next(bat, pos)) + +/** + * Accessor for the second part of a dvb_bat_section. + * + * @param bat dvb_bat_section pointer. + * @return dvb_bat_section_part2 pointer. + */ +static inline struct dvb_bat_section_part2 * + dvb_bat_section_part2(struct dvb_bat_section *bat) +{ + return (struct dvb_bat_section_part2 *) + ((uint8_t*) bat + + sizeof(struct dvb_bat_section) + + bat->bouquet_descriptors_length); + +} + +/** + * Iterator for the transports field of a dvb_bat_section_part2. + * + * @param part2 dvb_bat_section_part2 pointer. + * @param pos Variable containing a pointer to the current dvb_bat_transport. + */ +#define dvb_bat_section_transports_for_each(part2, pos) \ + for ((pos) = dvb_bat_section_transports_first(part2); \ + (pos); \ + (pos) = dvb_bat_section_transports_next(part2, pos)) + +/** + * Iterator for the descriptors field of a dvb_bat_transport. + * + * @param transport dvb_bat_transport pointer. + * @param pos Variable containing a pointer to the current descriptor. + */ +#define dvb_bat_transport_descriptors_for_each(transport, pos) \ + for ((pos) = dvb_bat_transport_descriptors_first(transport); \ + (pos); \ + (pos) = dvb_bat_transport_descriptors_next(transport, pos)) + + + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct descriptor * + dvb_bat_section_descriptors_first(struct dvb_bat_section *bat) +{ + if (bat->bouquet_descriptors_length == 0) + return NULL; + + return (struct descriptor *) + ((uint8_t *) bat + sizeof(struct dvb_bat_section)); +} + +static inline struct descriptor * + dvb_bat_section_descriptors_next(struct dvb_bat_section *bat, + struct descriptor* pos) +{ + return next_descriptor((uint8_t*) bat + sizeof(struct dvb_bat_section), + bat->bouquet_descriptors_length, + pos); +} + +static inline struct dvb_bat_transport * + dvb_bat_section_transports_first(struct dvb_bat_section_part2 *part2) +{ + if (part2->transport_stream_loop_length == 0) + return NULL; + + return (struct dvb_bat_transport *) + ((uint8_t *) part2 + sizeof(struct dvb_bat_section_part2)); +} + +static inline struct dvb_bat_transport * + dvb_bat_section_transports_next(struct dvb_bat_section_part2 *part2, + struct dvb_bat_transport *pos) +{ + uint8_t *end = (uint8_t*) part2 + sizeof(struct dvb_bat_section_part2) + + part2->transport_stream_loop_length; + uint8_t *next = (uint8_t*) pos + sizeof(struct dvb_bat_transport) + + pos->transport_descriptors_length; + + if (next >= end) + return NULL; + + return (struct dvb_bat_transport *) next; +} + +static inline struct descriptor * + dvb_bat_transport_descriptors_first(struct dvb_bat_transport *t) +{ + if (t->transport_descriptors_length == 0) + return NULL; + + return (struct descriptor *) + ((uint8_t*)t + sizeof(struct dvb_bat_transport)); +} + +static inline struct descriptor * + dvb_bat_transport_descriptors_next(struct dvb_bat_transport *t, + struct descriptor* pos) +{ + return next_descriptor((uint8_t*) t + sizeof(struct dvb_bat_transport), + t->transport_descriptors_length, + pos); +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/bouquet_name_descriptor.h b/lib/libucsi/dvb/bouquet_name_descriptor.h new file mode 100644 index 0000000..a298849 --- /dev/null +++ b/lib/libucsi/dvb/bouquet_name_descriptor.h @@ -0,0 +1,82 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_BOUQUET_NAME_DESCRIPTOR +#define _UCSI_DVB_BOUQUET_NAME_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_bouquet_name_descriptor structure. + */ +struct dvb_bouquet_name_descriptor { + struct descriptor d; + + /* uint8_t name[] */ +} __ucsi_packed; + +/** + * Process a dvb_bouquet_name_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_bouquet_name_descriptor pointer, or NULL on error. + */ +static inline struct dvb_bouquet_name_descriptor* + dvb_bouquet_name_descriptor_codec(struct descriptor* d) +{ + return (struct dvb_bouquet_name_descriptor*) d; +} + +/** + * Accessor for the name field of a dvb_bouquet_name_descriptor. + * + * @param d dvb_bouquet_name_descriptor pointer. + * @return Pointer to the field. + */ +static inline uint8_t * + dvb_bouquet_name_descriptor_name(struct dvb_bouquet_name_descriptor *d) +{ + return (uint8_t *) d + sizeof(struct dvb_bouquet_name_descriptor); +} + +/** + * Determine the length of the name field of a dvb_bouquet_name_descriptor in bytes. + * + * @param d dvb_bouquet_name_descriptor pointer. + * @return Length of the field in bytes. + */ +static inline int + dvb_bouquet_name_descriptor_name_length(struct dvb_bouquet_name_descriptor *d) +{ + return d->d.len; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/ca_identifier_descriptor.h b/lib/libucsi/dvb/ca_identifier_descriptor.h new file mode 100644 index 0000000..ac670a9 --- /dev/null +++ b/lib/libucsi/dvb/ca_identifier_descriptor.h @@ -0,0 +1,94 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_CA_IDENTIFIER_DESCRIPTOR +#define _UCSI_DVB_CA_IDENTIFIER_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_ca_identifier_descriptor structure. + */ +struct dvb_ca_identifier_descriptor { + struct descriptor d; + + /* uint16_t ca_system_ids[] */ +} __ucsi_packed; + +/** + * Process a dvb_ca_identifier_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_ca_identifier_descriptor pointer, or NULL on error. + */ +static inline struct dvb_ca_identifier_descriptor* + dvb_ca_identifier_descriptor_codec(struct descriptor* d) +{ + uint32_t len = d->len; + uint8_t *buf = (uint8_t*) d + 2; + uint32_t pos = 0; + + if (len % 2) + return NULL; + + while(pos < len) { + bswap16(buf+pos); + pos+=2; + } + + return (struct dvb_ca_identifier_descriptor*) d; +} + +/** + * Accessor for the ca_system_ids field of a dvb_ca_identifier_descriptor. + * + * @param d Generic descriptor pointer. + * @return Pointer to the field. + */ +static inline uint16_t * + dvb_ca_identifier_descriptor_ca_system_ids(struct dvb_ca_identifier_descriptor *d) +{ + return (uint16_t *) ((uint8_t *) d + sizeof(struct dvb_ca_identifier_descriptor)); +} + +/** + * Calculate the number of entries in the ca_system_ids field of a dvb_ca_identifier_descriptor. + * + * @param d dvb_ca_identifier_descriptor pointer. + * @return Number of entries. + */ +static inline int + dvb_ca_identifier_descriptor_ca_system_ids_count(struct dvb_ca_identifier_descriptor *d) +{ + return d->d.len >> 1; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/cable_delivery_descriptor.h b/lib/libucsi/dvb/cable_delivery_descriptor.h new file mode 100644 index 0000000..f0f92f3 --- /dev/null +++ b/lib/libucsi/dvb/cable_delivery_descriptor.h @@ -0,0 +1,70 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_CABLE_DELIVERY_DESCRIPTOR +#define _UCSI_DVB_CABLE_DELIVERY_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_cable_delivery_descriptor structure. + */ +struct dvb_cable_delivery_descriptor { + struct descriptor d; + + uint32_t frequency; // BCD, units 100Hz + EBIT2(uint16_t reserved : 12; , + uint16_t fec_outer : 4; ); + uint8_t modulation; + EBIT2(uint32_t symbol_rate : 28; , // BCD, units 100Hz + uint32_t fec_inner : 4; ); +} __ucsi_packed; + +/** + * Process a dvb_cable_delivery_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_cable_delivery_descriptor pointer, or NULL on error. + */ +static inline struct dvb_cable_delivery_descriptor* + dvb_cable_delivery_descriptor_codec(struct descriptor* d) +{ + if (d->len != (sizeof(struct dvb_cable_delivery_descriptor) - 2)) + return NULL; + + bswap32((uint8_t*) d + 2); + bswap16((uint8_t*) d + 6); + bswap32((uint8_t*) d + 9); + + return (struct dvb_cable_delivery_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/cell_frequency_link_descriptor.h b/lib/libucsi/dvb/cell_frequency_link_descriptor.h new file mode 100644 index 0000000..63f7fd2 --- /dev/null +++ b/lib/libucsi/dvb/cell_frequency_link_descriptor.h @@ -0,0 +1,190 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_CELL_FREQUENCY_LINK_DESCRIPTOR +#define _UCSI_DVB_CELL_FREQUENCY_LINK_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_cell_frequency_link_descriptor structure. + */ +struct dvb_cell_frequency_link_descriptor { + struct descriptor d; + + /* struct dvb_cell_frequency_link_cell cells[] */ +} __ucsi_packed; + +/** + * An entry in the cells field of a dvb_cell_frequency_link_descriptor. + */ +struct dvb_cell_frequency_link_cell { + uint16_t cell_id; + uint32_t frequency; + uint8_t subcell_loop_info_length; + /* struct dvb_cell_frequency_link_subcell subcells[] */ +} __ucsi_packed; + +/** + * An entry in the subcells field of a dvb_cell_frequency_link_cell. + */ +struct dvb_cell_frequency_link_cell_subcell { + uint8_t cell_id_extension; + uint32_t transposer_frequency; +} __ucsi_packed; + +/** + * Process a dvb_cell_frequency_link_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_cell_frequency_link_descriptor pointer, or NULL on error. + */ +static inline struct dvb_cell_frequency_link_descriptor* + dvb_cell_frequency_link_descriptor_codec(struct descriptor* d) +{ + uint32_t pos = 0; + uint32_t pos2 = 0; + uint8_t* buf = (uint8_t*) d + 2; + uint32_t len = d->len; + + while(pos < len) { + struct dvb_cell_frequency_link_cell *e = + (struct dvb_cell_frequency_link_cell*) (buf+pos); + + if ((pos + sizeof(struct dvb_cell_frequency_link_cell)) > len) + return NULL; + + bswap16(buf+pos); + bswap32(buf+pos+2); + + pos += sizeof(struct dvb_cell_frequency_link_cell); + + if ((pos + e->subcell_loop_info_length) > len) + return NULL; + + if (e->subcell_loop_info_length % sizeof(struct dvb_cell_frequency_link_cell_subcell)) + return NULL; + + pos2 = 0; + while(pos2 < e->subcell_loop_info_length) { + bswap32(buf+pos+pos2+1); + + pos2 += sizeof(struct dvb_cell_frequency_link_cell_subcell); + } + + pos += e->subcell_loop_info_length; + } + + return (struct dvb_cell_frequency_link_descriptor*) d; +} + +/** + * Iterator for the cells field of a dvb_cell_frequency_link_descriptor. + * + * @param d dvb_cell_frequency_link_descriptor pointer. + * @param pos Variable holding a pointer to the current dvb_cell_frequency_link_cell. + */ +#define dvb_cell_frequency_link_descriptor_cells_for_each(d, pos) \ + for ((pos) = dvb_cell_frequency_link_descriptor_cells_first(d); \ + (pos); \ + (pos) = dvb_cell_frequency_link_descriptor_cells_next(d, pos)) + +/** + * Iterator for the subcells field of a dvb_cell_frequency_link_cell. + * + * @param cell dvb_cell_frequency_link_cell pointer. + * @param pos Variable holding a pointer to the current dvb_cell_frequency_link_cell_subcell. + */ +#define dvb_cell_frequency_link_cell_subcells_for_each(cell, pos) \ + for ((pos) = dvb_cell_frequency_link_cell_subcells_first(cell); \ + (pos); \ + (pos) = dvb_cell_frequency_link_cell_subcells_next(cell, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_cell_frequency_link_cell* + dvb_cell_frequency_link_descriptor_cells_first(struct dvb_cell_frequency_link_descriptor *d) +{ + if (d->d.len == 0) + return NULL; + + return (struct dvb_cell_frequency_link_cell *) + ((uint8_t*) d + sizeof(struct dvb_cell_frequency_link_descriptor)); +} + +static inline struct dvb_cell_frequency_link_cell* + dvb_cell_frequency_link_descriptor_cells_next(struct dvb_cell_frequency_link_descriptor *d, + struct dvb_cell_frequency_link_cell *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + + sizeof(struct dvb_cell_frequency_link_cell) + + pos->subcell_loop_info_length; + + if (next >= end) + return NULL; + + return (struct dvb_cell_frequency_link_cell *) next; +} + +static inline struct dvb_cell_frequency_link_cell_subcell* + dvb_cell_frequency_link_cell_subcells_first(struct dvb_cell_frequency_link_cell *d) +{ + if (d->subcell_loop_info_length == 0) + return NULL; + + return (struct dvb_cell_frequency_link_cell_subcell*) + ((uint8_t*) d + sizeof(struct dvb_cell_frequency_link_cell)); +} + +static inline struct dvb_cell_frequency_link_cell_subcell* + dvb_cell_frequency_link_cell_subcells_next(struct dvb_cell_frequency_link_cell *cell, + struct dvb_cell_frequency_link_cell_subcell *pos) +{ + uint8_t *end = (uint8_t*) cell + cell->subcell_loop_info_length; + uint8_t *next = (uint8_t*) pos + + sizeof(struct dvb_cell_frequency_link_cell_subcell); + + if (next >= end) + return NULL; + + return (struct dvb_cell_frequency_link_cell_subcell *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/cell_list_descriptor.h b/lib/libucsi/dvb/cell_list_descriptor.h new file mode 100644 index 0000000..ddbaf2c --- /dev/null +++ b/lib/libucsi/dvb/cell_list_descriptor.h @@ -0,0 +1,201 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_CELL_LIST_DESCRIPTOR +#define _UCSI_DVB_CELL_LIST_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_cell_list_descriptor structure. + */ +struct dvb_cell_list_descriptor { + struct descriptor d; + + /* struct dvb_cell_list_entry cells[] */ +} __ucsi_packed; + +/** + * An entry in the cells field of a dvb_cell_list_descriptor. + */ +struct dvb_cell_list_entry { + uint16_t cell_id; + uint16_t cell_latitude; + uint16_t cell_longitude; + EBIT3(uint32_t cell_extend_of_latitude :12; , + uint32_t cell_extend_of_longitude :12; , + uint32_t subcell_info_loop_length : 8; ); + /* struct dvb_subcell_list_entry subcells[] */ +} __ucsi_packed; + +/** + * An entry in the subcells field of a dvb_cell_list_entry. + */ +struct dvb_subcell_list_entry { + uint8_t cell_id_extension; + uint16_t subcell_latitude; + uint16_t subcell_longitude; + EBIT2(uint32_t subcell_extend_of_latitude :12; , + uint32_t subcell_extend_of_longitude :12; ); +} __ucsi_packed; + +/** + * Process a dvb_cell_list_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_cell_list_descriptor pointer, or NULL on error. + */ +static inline struct dvb_cell_list_descriptor* + dvb_cell_list_descriptor_codec(struct descriptor* d) +{ + uint32_t pos = 0; + uint32_t pos2 = 0; + uint8_t* buf = (uint8_t*) d + 2; + uint32_t len = d->len; + + while(pos < len) { + struct dvb_cell_list_entry *e = + (struct dvb_cell_list_entry*) (buf+pos); + + if ((pos + sizeof(struct dvb_cell_list_entry)) > len) + return NULL; + + bswap16(buf+pos); + bswap16(buf+pos+2); + bswap16(buf+pos+4); + bswap32(buf+pos+6); + + pos += sizeof(struct dvb_cell_list_entry); + + if ((pos + e->subcell_info_loop_length) > len) + return NULL; + + if (e->subcell_info_loop_length % sizeof(struct dvb_subcell_list_entry)) + return NULL; + + pos2 = 0; + while(pos2 < e->subcell_info_loop_length) { + bswap16(buf+pos+pos2+1); + bswap16(buf+pos+pos2+3); + bswap24(buf+pos+pos2+5); + + pos2 += sizeof(struct dvb_subcell_list_entry); + } + + pos += e->subcell_info_loop_length; + } + + return (struct dvb_cell_list_descriptor*) d; +} + +/** + * Iterator for the cells field of a dvb_cell_list_descriptor. + * + * @param d dvb_cell_list_descriptor pointer. + * @param pos Variable holding a pointer to the current dvb_cell_list_entry. + */ +#define dvb_cell_list_descriptor_cells_for_each(d, pos) \ + for ((pos) = dvb_cell_list_descriptor_cells_first(d); \ + (pos); \ + (pos) = dvb_cell_list_descriptor_cells_next(d, pos)) + +/** + * Iterator for the subcells field of a dvb_cell_list_entry. + * + * @param cell dvb_cell_list_entry pointer. + * @param pos Variable holding a pointer to the current dvb_subcell_list_entry. + */ +#define dvb_cell_list_entry_subcells_for_each(cell, pos) \ + for ((pos) = dvb_cell_list_entry_subcells_first(cell); \ + (pos); \ + (pos) = dvb_cell_list_entry_subcells_next(cell, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_cell_list_entry* + dvb_cell_list_descriptor_cells_first(struct dvb_cell_list_descriptor *d) +{ + if (d->d.len == 0) + return NULL; + + return (struct dvb_cell_list_entry *) + ((uint8_t*) d + sizeof(struct dvb_cell_list_descriptor)); +} + +static inline struct dvb_cell_list_entry* + dvb_cell_list_descriptor_cells_next(struct dvb_cell_list_descriptor *d, + struct dvb_cell_list_entry *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + + sizeof(struct dvb_cell_list_entry) + + pos->subcell_info_loop_length; + + if (next >= end) + return NULL; + + return (struct dvb_cell_list_entry *) next; +} + +static inline struct dvb_subcell_list_entry* + dvb_cell_list_entry_subcells_first(struct dvb_cell_list_entry *d) +{ + if (d->subcell_info_loop_length == 0) + return NULL; + + return (struct dvb_subcell_list_entry*) + ((uint8_t*) d + sizeof(struct dvb_cell_list_entry)); +} + +static inline struct dvb_subcell_list_entry* + dvb_cell_list_entry_subcells_next(struct dvb_cell_list_entry *d, + struct dvb_subcell_list_entry *pos) +{ + uint8_t *next = (uint8_t*) pos + sizeof(struct dvb_subcell_list_entry); + uint8_t *end = (uint8_t*) d + + sizeof(struct dvb_cell_list_entry) + + d->subcell_info_loop_length; + + if (next >= end) + return NULL; + + return (struct dvb_subcell_list_entry *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/component_descriptor.h b/lib/libucsi/dvb/component_descriptor.h new file mode 100644 index 0000000..31d38e1 --- /dev/null +++ b/lib/libucsi/dvb/component_descriptor.h @@ -0,0 +1,147 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_COMPONENT_DESCRIPTOR +#define _UCSI_DVB_COMPONENT_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +/** + * Possible values for stream_content. + */ +enum { + DVB_STREAM_CONTENT_VIDEO = 0x01, + DVB_STREAM_CONTENT_AUDIO = 0x02, + DVB_STREAM_CONTENT_SUBTITLE = 0x03, + DVB_STREAM_CONTENT_AC3 = 0x04, +}; + +/** + * Possible values for component_type. + */ +enum { + DVB_COMPONENT_TYPE_VIDEO_43_25Hz = 0x01, + DVB_COMPONENT_TYPE_VIDEO_169_PAN_25Hz = 0x02, + DVB_COMPONENT_TYPE_VIDEO_169_NOPAN_25Hz = 0x03, + DVB_COMPONENT_TYPE_VIDEO_GT169_25Hz = 0x04, + + DVB_COMPONENT_TYPE_VIDEO_43_30Hz = 0x05, + DVB_COMPONENT_TYPE_VIDEO_169_PAN_30Hz = 0x06, + DVB_COMPONENT_TYPE_VIDEO_169_NOPAN_30Hz = 0x07, + DVB_COMPONENT_TYPE_VIDEO_GT169_30Hz = 0x08, + + DVB_COMPONENT_TYPE_HDVIDEO_43_25Hz = 0x09, + DVB_COMPONENT_TYPE_HDVIDEO_169_PAN_25Hz = 0x0a, + DVB_COMPONENT_TYPE_HDVIDEO_169_NOPAN_25Hz = 0x0b, + DVB_COMPONENT_TYPE_HDVIDEO_GT169_25Hz = 0x0c, + + DVB_COMPONENT_TYPE_HDVIDEO_43_30Hz = 0x0d, + DVB_COMPONENT_TYPE_HDVIDEO_169_PAN_30Hz = 0x0e, + DVB_COMPONENT_TYPE_HDVIDEO_169_NOPAN_30Hz = 0x0f, + DVB_COMPONENT_TYPE_HDVIDEO_GT169_30Hz = 0x10, + + DVB_COMPONENT_TYPE_AUDIO_SINGLE_MONO = 0x01, + DVB_COMPONENT_TYPE_AUDIO_DUAL_MONO = 0x02, + DVB_COMPONENT_TYPE_AUDIO_STEREO = 0x03, + DVB_COMPONENT_TYPE_AUDIO_MULTI_LINGUAL_MULTI_CHAN= 0x04, + DVB_COMPONENT_TYPE_AUDIO_SURROUND = 0x05, + DVB_COMPONENT_TYPE_AUDIO_VISUAL_IMPAIRED = 0x40, + DVB_COMPONENT_TYPE_AUDIO_HARDHEAR = 0x41, + DVB_COMPONENT_TYPE_AUDIO_SUPPLEMENTARY = 0x42, + + DVB_COMPONENT_TYPE_SUBTITLE_TELETEXT = 0x01, + DVB_COMPONENT_TYPE_SUBTITLE_ASSOC_TELETEXT = 0x02, + DVB_COMPONENT_TYPE_SUBTITLE_VBI = 0x03, + DVB_COMPONENT_TYPE_SUBTITLE_DVB = 0x10, + DVB_COMPONENT_TYPE_SUBTITLE_DVB_43 = 0x11, + DVB_COMPONENT_TYPE_SUBTITLE_DVB_169 = 0x12, + DVB_COMPONENT_TYPE_SUBTITLE_DVB_2211 = 0x13, + DVB_COMPONENT_TYPE_SUBTITLE_DVB_HARDHEAR = 0x20, + DVB_COMPONENT_TYPE_SUBTITLE_DVB_HARDHEAR_43 = 0x21, + DVB_COMPONENT_TYPE_SUBTITLE_DVB_HARDHEAR_169 = 0x22, + DVB_COMPONENT_TYPE_SUBTITLE_DVB_HARDHEAR_2211 = 0x23, +}; + +/** + * dvb_component_descriptor structure. + */ +struct dvb_component_descriptor { + struct descriptor d; + + EBIT2(uint8_t reserved : 4; , + uint8_t stream_content : 4; ); + uint8_t component_type; + uint8_t component_tag; + iso639lang_t language_code; + /* uint8_t text[] */ +} __ucsi_packed; + +/** + * Process a dvb_component_descriptor. + * + * @param d Pointer to a generic descriptor. + * @return dvb_component_descriptor pointer, or NULL on error. + */ +static inline struct dvb_component_descriptor* + dvb_component_descriptor_codec(struct descriptor* d) +{ + if (d->len < (sizeof(struct dvb_component_descriptor) - 2)) + return NULL; + + return (struct dvb_component_descriptor*) d; +} + +/** + * Accessor for the text field of a dvb_component_descriptor. + * + * @param d dvb_component_descriptor pointer. + * @return Pointer to the field. + */ +static inline uint8_t * + dvb_component_descriptor_text(struct dvb_component_descriptor *d) +{ + return (uint8_t *) d + sizeof(struct dvb_component_descriptor); +} + +/** + * Determine the length of the text field of a dvb_component_descriptor. + * + * @param d dvb_component_descriptor pointer. + * @return Length of the field in bytes. + */ +static inline int + dvb_component_descriptor_text_length(struct dvb_component_descriptor *d) +{ + return d->d.len - 6; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/content_descriptor.h b/lib/libucsi/dvb/content_descriptor.h new file mode 100644 index 0000000..d2a63a0 --- /dev/null +++ b/lib/libucsi/dvb/content_descriptor.h @@ -0,0 +1,116 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_CONTENT_DESCRIPTOR +#define _UCSI_DVB_CONTENT_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +// FIXME: the nibbles + +/** + * dvb_content_descriptor structure. + */ +struct dvb_content_descriptor { + struct descriptor d; + + /* struct dvb_content_nibble nibbles[] */ +} __ucsi_packed; + +/** + * An entry in the nibbles field of a dvb_content_descriptor. + */ +struct dvb_content_nibble { + EBIT2(uint8_t content_nibble_level_1 : 4; , + uint8_t content_nibble_level_2 : 4; ); + EBIT2(uint8_t user_nibble_1 : 4; , + uint8_t user_nibble_2 : 4; ); +} __ucsi_packed; + +/** + * Process a dvb_content_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_content_descriptor pointer, or NULL on error. + */ +static inline struct dvb_content_descriptor* + dvb_content_descriptor_codec(struct descriptor* d) +{ + if (d->len % sizeof(struct dvb_content_nibble)) + return NULL; + + return (struct dvb_content_descriptor*) d; +} + +/** + * Iterator for the nibbles field of a dvb_content_descriptor. + * + * @param d dvb_content_descriptor pointer. + * @param pos Variable containing a pointer to the current dvb_content_nibble. + */ +#define dvb_content_descriptor_nibbles_for_each(d, pos) \ + for ((pos) = dvb_content_descriptor_nibbles_first(d); \ + (pos); \ + (pos) = dvb_content_descriptor_nibbles_next(d, pos)) + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_content_nibble* + dvb_content_descriptor_nibbles_first(struct dvb_content_descriptor *d) +{ + if (d->d.len == 0) + return NULL; + + return (struct dvb_content_nibble *) + ((uint8_t*) d + sizeof(struct dvb_content_descriptor)); +} + +static inline struct dvb_content_nibble* + dvb_content_descriptor_nibbles_next(struct dvb_content_descriptor *d, + struct dvb_content_nibble *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_content_nibble); + + if (next >= end) + return NULL; + + return (struct dvb_content_nibble *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/content_identifier_descriptor.h b/lib/libucsi/dvb/content_identifier_descriptor.h new file mode 100644 index 0000000..c2cf9ea --- /dev/null +++ b/lib/libucsi/dvb/content_identifier_descriptor.h @@ -0,0 +1,233 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_CONTENT_IDENTIFIER_DESCRIPTOR +#define _UCSI_DVB_CONTENT_IDENTIFIER_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + + +/** + * Possible values for the crid_type. + */ +enum { + DVB_CRID_TYPE_NONE = 0x00, + DVB_CRID_TYPE_ITEM = 0x01, + DVB_CRID_TYPE_SERIES = 0x02, + DVB_CRID_TYPE_RECOMMENDATION = 0x03, +}; + +/** + * Possible values for the crid_location. + */ +enum { + DVB_CRID_LOCATION_THIS_DESCRIPTOR = 0x00, + DVB_CRID_LOCATION_CIT = 0x01, +}; + +/** + * dvb_content_identifier_descriptor structure. + */ +struct dvb_content_identifier_descriptor { + struct descriptor d; + + /* struct dvb_content_identifier_entry entries[] */ +} __ucsi_packed; + +/** + * An entry in the entries field of a dvb_content_identifier_descriptor. + */ +struct dvb_content_identifier_entry { + EBIT2(uint8_t crid_type : 6; , + uint8_t crid_location : 2; ); + /* struct dvb_content_identifier_data_00 data0 */ + /* struct dvb_content_identifier_data_01 data1 */ +} __ucsi_packed; + +/** + * The data if crid_location == 0 + */ +struct dvb_content_identifier_entry_data_0 { + uint8_t crid_length; + /* uint8_t data[] */ +} __ucsi_packed; + +/** + * The data if crid_location == 1 + */ +struct dvb_content_identifier_entry_data_1 { + uint16_t crid_ref; +} __ucsi_packed; + + +/** + * Process a dvb_content_identifier_descriptor. + * + * @param d Generic descriptor. + * @return dvb_content_identifier_descriptor pointer, or NULL on error. + */ +static inline struct dvb_content_identifier_descriptor* + dvb_content_identifier_descriptor_codec(struct descriptor* d) +{ + uint32_t len = d->len + 2; + uint32_t pos = 2; + uint8_t *buf = (uint8_t*) d; + + while(pos < len) { + struct dvb_content_identifier_entry *e = + (struct dvb_content_identifier_entry*) (buf + pos); + + if (len < (pos+1)) + return NULL; + pos++; + + switch(e->crid_location) { + case 0: + if (len < (pos + 1)) + return NULL; + if (len < (pos + 1 + buf[pos])) + return NULL; + pos += 1 + buf[pos]; + break; + + case 1: + if (len < (pos+2)) + return NULL; + bswap16(buf+pos); + break; + } + } + + if (pos != len) + return NULL; + + return (struct dvb_content_identifier_descriptor*) d; +} + +/** + * Iterator for entries field of a dvb_content_identifier_descriptor. + * + * @param d dvb_content_identifier_descriptor pointer. + * @param pos Variable holding a pointer to the current dvb_content_identifier_entry. + */ +#define dvb_content_identifier_descriptor_entries_for_each(d, pos) \ + for ((pos) = dvb_content_identifier_descriptor_entries_first(d); \ + (pos); \ + (pos) = dvb_content_identifier_descriptor_entries_next(d, pos)) + +/** + * Accessor for the data0 field of a dvb_content_identifier_entry. + * + * @param d dvb_content_identifier_entry pointer. + * @return Pointer, or NULL on error. + */ +static inline struct dvb_content_identifier_entry_data_0* + dvb_content_identifier_entry_data_0(struct dvb_content_identifier_entry *d) +{ + if (d->crid_location != 0) + return NULL; + return (struct dvb_content_identifier_entry_data_0*) + ((uint8_t*) d + sizeof(struct dvb_content_identifier_entry)); +} +/** + * Accessor for the data field of a dvb_content_identifier_entry_data_0. + * + * @param d dvb_content_identifier_entry_data_0 pointer. + * @return Pointer, or NULL on error. + */ +static inline uint8_t* + dvb_content_identifier_entry_data_0_data(struct dvb_content_identifier_entry_data_0 *d) +{ + return ((uint8_t*) d + sizeof(struct dvb_content_identifier_entry_data_0)); +} + +/** + * Accessor for the data1 field of a dvb_content_identifier_entry. + * + * @param d dvb_content_identifier_entry pointer. + * @return Pointer, or NULL on error. + */ +static inline struct dvb_content_identifier_entry_data_1* + dvb_content_identifier_entry_data_1(struct dvb_content_identifier_entry *d) +{ + if (d->crid_location != 1) + return NULL; + return (struct dvb_content_identifier_entry_data_1*) + ((uint8_t*) d + sizeof(struct dvb_content_identifier_entry)); +} + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_content_identifier_entry* + dvb_content_identifier_descriptor_entries_first(struct dvb_content_identifier_descriptor *d) +{ + if (d->d.len == 0) + return NULL; + + return (struct dvb_content_identifier_entry *) + ((uint8_t*) d + sizeof(struct dvb_content_identifier_descriptor)); +} + +static inline struct dvb_content_identifier_entry* + dvb_content_identifier_descriptor_entries_next(struct dvb_content_identifier_descriptor *d, + struct dvb_content_identifier_entry *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_content_identifier_entry); + + if (next >= end) + return NULL; + + switch(pos->crid_location) { + case 0: + if ((next+2) >= end) + return NULL; + if ((next+2+next[1]) >= end) + return NULL; + break; + + case 1: + if ((next+3) >= end) + return NULL; + break; + } + + return (struct dvb_content_identifier_entry*) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/country_availability_descriptor.h b/lib/libucsi/dvb/country_availability_descriptor.h new file mode 100644 index 0000000..65b1661 --- /dev/null +++ b/lib/libucsi/dvb/country_availability_descriptor.h @@ -0,0 +1,120 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_COUNTRY_AVAILABILITY_DESCRIPTOR +#define _UCSI_DVB_COUNTRY_AVAILABILITY_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +/** + * dvb_country_availability_descriptor structure. + */ +struct dvb_country_availability_descriptor { + struct descriptor d; + + EBIT2(uint8_t country_availability_flag : 1; , + uint8_t reserved : 7; ); + /* struct dvb_country_availability_entry countries[] */ +} __ucsi_packed; + +/** + * An entry in the countries field of a dvb_country_availability_descriptor. + */ +struct dvb_country_availability_entry { + iso639country_t country_code; +} __ucsi_packed; + +/** + * Process a dvb_country_availability_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_country_availability_descriptor pointer, or NULL on error. + */ +static inline struct dvb_country_availability_descriptor* + dvb_country_availability_descriptor_codec(struct descriptor* d) +{ + uint32_t len = d->len; + + if (len < (sizeof(struct dvb_country_availability_descriptor) - 2)) + return NULL; + + if ((len - 1) % sizeof(struct dvb_country_availability_entry)) + return NULL; + + return (struct dvb_country_availability_descriptor*) d; +} + +/** + * Iterator for the countries field of a dvb_country_availability_descriptor. + * + * @param d dvb_country_availability_descriptor pointer. + * @param pos Variable containing a pointer to the current dvb_country_availability_entry. + */ +#define dvb_country_availability_descriptor_countries_for_each(d, pos) \ + for ((pos) = dvb_country_availability_descriptor_countries_first(d); \ + (pos); \ + (pos) = dvb_country_availability_descriptor_countries_next(d, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_country_availability_entry* + dvb_country_availability_descriptor_countries_first(struct dvb_country_availability_descriptor *d) +{ + if (d->d.len == 1) + return NULL; + + return (struct dvb_country_availability_entry *) + ((uint8_t*) d + sizeof(struct dvb_country_availability_descriptor)); +} + +static inline struct dvb_country_availability_entry* + dvb_country_availability_descriptor_countries_next(struct dvb_country_availability_descriptor *d, + struct dvb_country_availability_entry *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_country_availability_entry); + + if (next >= end) + return NULL; + + return (struct dvb_country_availability_entry *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/data_broadcast_descriptor.h b/lib/libucsi/dvb/data_broadcast_descriptor.h new file mode 100644 index 0000000..069e1db --- /dev/null +++ b/lib/libucsi/dvb/data_broadcast_descriptor.h @@ -0,0 +1,139 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_DATA_BROADCAST_DESCRIPTOR +#define _UCSI_DVB_DATA_BROADCAST_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +/** + * dvb_data_broadcast_descriptor structure. + */ +struct dvb_data_broadcast_descriptor { + struct descriptor d; + + uint16_t data_broadcast_id; + uint8_t component_tag; + uint8_t selector_length; + /* uint8_t selector[] */ + /* struct dvb_data_broadcast_descriptor_part2 part2 */ +} __ucsi_packed; + +/** + * Second part of a dvb_data_broadcast_descriptor following the variable length selector field. + */ +struct dvb_data_broadcast_descriptor_part2 { + iso639lang_t language_code; + uint8_t text_length; + /* uint8_t text[] */ +} __ucsi_packed; + +/** + * Process a dvb_data_broadcast_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_data_broadcast_descriptor pointer, or NULL on error. + */ +static inline struct dvb_data_broadcast_descriptor* + dvb_data_broadcast_descriptor_codec(struct descriptor* d) +{ + struct dvb_data_broadcast_descriptor *p = + (struct dvb_data_broadcast_descriptor *) d; + struct dvb_data_broadcast_descriptor_part2 *p2; + uint8_t* buf = (uint8_t*) d + 2; + uint32_t pos = sizeof(struct dvb_data_broadcast_descriptor) - 2; + uint32_t len = d->len; + + if (pos > len) + return NULL; + + bswap16(buf + 2); + + pos += p->selector_length; + + if (pos > len) + return NULL; + + p2 = (struct dvb_data_broadcast_descriptor_part2*) (buf + 2 + pos); + + pos += sizeof(struct dvb_data_broadcast_descriptor_part2); + + if (pos > len) + return NULL; + + pos += p2->text_length; + + if (pos != len) + return NULL; + + return p; +} + +/** + * Accessor for the selector field of a dvb_data_broadcast_descriptor. + * + * @param d dvb_data_broadcast_descriptor pointer. + * @return pointer to the field. + */ +static inline uint8_t * + dvb_data_broadcast_descriptor_selector(struct dvb_data_broadcast_descriptor *d) +{ + return (uint8_t *) d + sizeof(struct dvb_data_broadcast_descriptor); +} + +/** + * Accessor for the second part of a dvb_data_broadcast_descriptor. + * + * @param d dvb_data_broadcast_descriptor pointer. + * @return dvb_data_broadcast_descriptor_part2 pointer. + */ +static inline struct dvb_data_broadcast_descriptor_part2 * + dvb_data_broadcast_descriptor_part2(struct dvb_data_broadcast_descriptor *d) +{ + return (struct dvb_data_broadcast_descriptor_part2*) + ((uint8_t*) d + sizeof(struct dvb_data_broadcast_descriptor) + + d->selector_length); +} + +/** + * Accessor for the text field in a dvb_data_broadcast_descriptor_part2. + * + * @param d dvb_data_broadcast_descriptor_part2 pointer. + * @return pointer to the field. + */ +static inline uint8_t * + dvb_data_broadcast_descriptor_part2_text(struct dvb_data_broadcast_descriptor_part2 *d) +{ + return (uint8_t *) d + sizeof(struct dvb_data_broadcast_descriptor_part2); +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/data_broadcast_id_descriptor.h b/lib/libucsi/dvb/data_broadcast_id_descriptor.h new file mode 100644 index 0000000..446927c --- /dev/null +++ b/lib/libucsi/dvb/data_broadcast_id_descriptor.h @@ -0,0 +1,221 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_DATA_BROADCAST_ID_DESCRIPTOR +#define _UCSI_DVB_DATA_BROADCAST_ID_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * Possible values for data_broadcast_id. + */ +enum { + DVB_BROADCAST_ID_DATA_PIPE = 0X0001, + DVB_BROADCAST_ID_ASYNCHRONOUS_DATA_STREAM = 0X0002, + DVB_BROADCAST_ID_SYNCHRONOUS_DATA_STREAM = 0X0003, + DVB_BROADCAST_ID_SYNCHRONISED_DATA_STREAM = 0X0004, + DVB_BROADCAST_ID_MULTI_PROTOCOL_ENCAPSULATION = 0X0005, + DVB_BROADCAST_ID_DATA_CAROUSEL = 0X0006, + DVB_BROADCAST_ID_OBJECT_CAROUSEL = 0X0007, + DVB_BROADCAST_ID_DVB_ATM_STREAMS = 0X0008, + DVB_BROADCAST_ID_HIGHER_PROTOCOLS = 0X0009, + DVB_BROADCAST_ID_SOFTWARE_UPDATE = 0x000A, + DVB_BROADCAST_ID_IP_MAC_NOTIFICATION_TABLE = 0x000B, +}; + +/** + * dvb_data_broadcast_id_descriptor structure. + */ +struct dvb_data_broadcast_id_descriptor { + struct descriptor d; + + uint16_t data_broadcast_id; + /* uint8_t id_selector_byte[] */ +} __ucsi_packed; + +/** + * id_selector_byte for 0x000b data_broadcast_id (IP/MAC Notification Table). + */ +struct dvb_id_selector_byte_000b { + uint8_t platform_id_data_length; + /* struct dvb_ip_mac_notification_info infos[] */ + /* uint8_t private_data[] */ +} __ucsi_packed; + +/** + * Entries in the infos field of a dvb_id_selector_byte_0b. + */ +struct dvb_ip_mac_notification_info { + EBIT2(uint32_t platform_id : 24; , + uint8_t action_type : 8; ); + EBIT3(uint8_t reserved : 2; , + uint8_t INT_versioning_flag : 1; , + uint8_t INT_version : 5; ); +} __ucsi_packed; + +/** + * Process a dvb_data_broadcast_id_descriptor. + * + * @param d Generic descriptor structure. + * @return dvb_data_broadcast_id_descriptor pointer, or NULL on error. + */ +static inline struct dvb_data_broadcast_id_descriptor* + dvb_data_broadcast_id_descriptor_codec(struct descriptor* d) +{ + if (d->len < (sizeof(struct dvb_data_broadcast_id_descriptor) - 2)) + return NULL; + + bswap16((uint8_t*) d + 2); + + return (struct dvb_data_broadcast_id_descriptor*) d; +} + +/** + * Accessor for the selector_byte field of a dvb_data_broadcast_id_descriptor. + * + * @param d dvb_data_broadcast_id_descriptor pointer. + * @return Pointer to the field. + */ +static inline uint8_t * + dvb_data_broadcast_id_descriptor_id_selector_byte(struct dvb_data_broadcast_id_descriptor *d) +{ + return (uint8_t *) d + sizeof(struct dvb_data_broadcast_id_descriptor); +} + +/** + * Determine the length of the selector_byte field of a dvb_data_broadcast_id_descriptor. + * + * @param d dvb_data_broadcast_id_descriptor pointer. + * @return Length of the field in bytes. + */ +static inline int + dvb_data_broadcast_id_descriptor_id_selector_byte_length(struct dvb_data_broadcast_id_descriptor *d) +{ + return d->d.len - 2; +} + +/** + * Accessor for a dvb_id_selector_byte_000b pointer. + * + * @param d dvb_data_broadcast_id_descriptor pointer. + * @return Pointer to the data field. + */ +static inline struct dvb_id_selector_byte_000b * + dvb_id_selector_byte_000b(struct dvb_data_broadcast_id_descriptor *d) +{ + if (d->data_broadcast_id != DVB_BROADCAST_ID_IP_MAC_NOTIFICATION_TABLE) + return NULL; + return (struct dvb_id_selector_byte_000b *) dvb_data_broadcast_id_descriptor_id_selector_byte(d); +} + +/** + * Iterator for the dvb_ip_mac_notification_info field of a dvb_id_selector_byte_000b. + * + * @param id_selector_byte dvb_id_selector_byte_000b pointer. + * @param pos Variable containing a pointer to the current dvb_ip_mac_notification_info. + */ +#define dvb_id_selector_byte_000b_ip_mac_notification_info_for_each(id_selector_byte, pos) \ + for ((pos) = dvb_ip_mac_notification_info_first(id_selector_byte); \ + (pos); \ + (pos) = dvb_ip_mac_notification_info_next(id_selector_byte, pos)) + +/** + * Length of the private_data field of a dvb_id_selector_byte_000b. + * + * @param d descriptor pointer. + * @param i dvb_id_selector_byte_000b pointer. + * @return Length of the field. + */ +static inline uint8_t + dvb_id_selector_byte_000b_private_data_length(struct descriptor *d, + struct dvb_id_selector_byte_000b *i) +{ + return (uint8_t) (d->len - + sizeof(struct descriptor) - + i->platform_id_data_length - + sizeof(struct dvb_id_selector_byte_000b)); +} + +/** + * Accessor for the private_data field of a dvb_id_selector_byte_000b. + * + * @param d descriptor pointer. + * @param i dvb_id_selector_byte_000b pointer. + * @return Pointer to the field. + */ +static inline uint8_t * + dvb_id_selector_byte_000b_private_data(struct descriptor *d, + struct dvb_id_selector_byte_000b *i) +{ + if (dvb_id_selector_byte_000b_private_data_length(d, i) <= 0) + return NULL; + + return (uint8_t *) i + i->platform_id_data_length + sizeof(struct dvb_id_selector_byte_000b); +} + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_ip_mac_notification_info * + dvb_ip_mac_notification_info_first(struct dvb_id_selector_byte_000b *d) +{ + if (d->platform_id_data_length == 0) + return NULL; + + bswap32((uint8_t *) d + sizeof(struct dvb_id_selector_byte_000b)); + + return (struct dvb_ip_mac_notification_info *) ((uint8_t *) d + sizeof(struct dvb_id_selector_byte_000b)); +} + +static inline struct dvb_ip_mac_notification_info * + dvb_ip_mac_notification_info_next(struct dvb_id_selector_byte_000b *d, + struct dvb_ip_mac_notification_info *pos) +{ + uint8_t *end = (uint8_t *) d + d->platform_id_data_length; + uint8_t *next = (uint8_t *) pos + + sizeof(struct dvb_id_selector_byte_000b) + + sizeof(struct dvb_ip_mac_notification_info); + + if (next >= end) + return NULL; + + bswap32(next); + + return (struct dvb_ip_mac_notification_info *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif + +#include <libucsi/dvb/mhp_data_broadcast_id_descriptor.h> diff --git a/lib/libucsi/dvb/default_authority_descriptor.h b/lib/libucsi/dvb/default_authority_descriptor.h new file mode 100644 index 0000000..0b0ba73 --- /dev/null +++ b/lib/libucsi/dvb/default_authority_descriptor.h @@ -0,0 +1,82 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_DEFAULT_AUTHORITY_DESCRIPTOR +#define _UCSI_DVB_DEFAULT_AUTHORITY_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_default_authority_descriptor structure. + */ +struct dvb_default_authority_descriptor { + struct descriptor d; + + /* char name[] */ +} __ucsi_packed; + +/** + * Process a dvb_default_authority_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_default_authority_descriptor pointer, or NULL on error. + */ +static inline struct dvb_default_authority_descriptor* + dvb_default_authority_descriptor_codec(struct descriptor* d) +{ + return (struct dvb_default_authority_descriptor*) d; +} + +/** + * Accessor for the name field in a dvb_default_authority_descriptor. + * + * @param d dvb_default_authority_descriptor pointer. + * @return Pointer to the field. + */ +static inline uint8_t * + dvb_default_authority_descriptor_name(struct dvb_default_authority_descriptor *d) +{ + return (uint8_t *) d + sizeof(struct dvb_default_authority_descriptor); +} + +/** + * Calculate the length of the name field in a dvb_default_authority_descriptor. + * + * @param d dvb_default_authority_descriptor pointer. + * @return Length of the field in bytes. + */ +static inline int + dvb_default_authority_descriptor_name_length(struct dvb_default_authority_descriptor *d) +{ + return d->d.len; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/descriptor.h b/lib/libucsi/dvb/descriptor.h new file mode 100644 index 0000000..303e17a --- /dev/null +++ b/lib/libucsi/dvb/descriptor.h @@ -0,0 +1,229 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_DESCRIPTOR_H +#define _UCSI_DVB_DESCRIPTOR_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/dvb/ac3_descriptor.h> +#include <libucsi/dvb/adaptation_field_data_descriptor.h> +#include <libucsi/dvb/ancillary_data_descriptor.h> +#include <libucsi/dvb/announcement_support_descriptor.h> +#include <libucsi/dvb/application_signalling_descriptor.h> +#include <libucsi/dvb/bouquet_name_descriptor.h> +#include <libucsi/dvb/ca_identifier_descriptor.h> +#include <libucsi/dvb/cable_delivery_descriptor.h> +#include <libucsi/dvb/cell_frequency_link_descriptor.h> +#include <libucsi/dvb/cell_list_descriptor.h> +#include <libucsi/dvb/component_descriptor.h> +#include <libucsi/dvb/content_descriptor.h> +#include <libucsi/dvb/content_identifier_descriptor.h> +#include <libucsi/dvb/country_availability_descriptor.h> +#include <libucsi/dvb/data_broadcast_descriptor.h> +#include <libucsi/dvb/data_broadcast_id_descriptor.h> +#include <libucsi/dvb/default_authority_descriptor.h> +#include <libucsi/dvb/dsng_descriptor.h> +#include <libucsi/dvb/extended_event_descriptor.h> +#include <libucsi/dvb/frequency_list_descriptor.h> +#include <libucsi/dvb/ip_mac_platform_name_descriptor.h> +#include <libucsi/dvb/ip_mac_platform_provider_name_descriptor.h> +#include <libucsi/dvb/ip_mac_stream_location_descriptor.h> +#include <libucsi/dvb/linkage_descriptor.h> +#include <libucsi/dvb/local_time_offset_descriptor.h> +#include <libucsi/dvb/mosaic_descriptor.h> +#include <libucsi/dvb/multilingual_bouquet_name_descriptor.h> +#include <libucsi/dvb/multilingual_component_descriptor.h> +#include <libucsi/dvb/multilingual_network_name_descriptor.h> +#include <libucsi/dvb/multilingual_service_name_descriptor.h> +#include <libucsi/dvb/network_name_descriptor.h> +#include <libucsi/dvb/nvod_reference_descriptor.h> +#include <libucsi/dvb/parental_rating_descriptor.h> +#include <libucsi/dvb/partial_transport_stream_descriptor.h> +#include <libucsi/dvb/pdc_descriptor.h> +#include <libucsi/dvb/private_data_specifier_descriptor.h> +#include <libucsi/dvb/related_content_descriptor.h> +#include <libucsi/dvb/satellite_delivery_descriptor.h> +#include <libucsi/dvb/s2_satellite_delivery_descriptor.h> +#include <libucsi/dvb/scrambling_descriptor.h> +#include <libucsi/dvb/service_availability_descriptor.h> +#include <libucsi/dvb/service_descriptor.h> +#include <libucsi/dvb/service_identifier_descriptor.h> +#include <libucsi/dvb/service_list_descriptor.h> +#include <libucsi/dvb/service_move_descriptor.h> +#include <libucsi/dvb/short_event_descriptor.h> +#include <libucsi/dvb/short_smoothing_buffer_descriptor.h> +#include <libucsi/dvb/stream_identifier_descriptor.h> +#include <libucsi/dvb/stuffing_descriptor.h> +#include <libucsi/dvb/subtitling_descriptor.h> +#include <libucsi/dvb/target_ip_address_descriptor.h> +#include <libucsi/dvb/target_ipv6_address_descriptor.h> +#include <libucsi/dvb/target_ip_slash_descriptor.h> +#include <libucsi/dvb/target_ip_source_slash_descriptor.h> +#include <libucsi/dvb/target_ipv6_slash_descriptor.h> +#include <libucsi/dvb/target_ipv6_source_slash_descriptor.h> +#include <libucsi/dvb/telephone_descriptor.h> +#include <libucsi/dvb/teletext_descriptor.h> +#include <libucsi/dvb/terrestrial_delivery_descriptor.h> +#include <libucsi/dvb/time_shifted_event_descriptor.h> +#include <libucsi/dvb/time_shifted_service_descriptor.h> +#include <libucsi/dvb/transport_stream_descriptor.h> +#include <libucsi/dvb/tva_id_descriptor.h> +#include <libucsi/dvb/vbi_data_descriptor.h> +#include <libucsi/dvb/vbi_teletext_descriptor.h> +#include <libucsi/endianops.h> + +/** + * The following are disabled because support is incomplete just now. + */ +/* +#include <libucsi/dvb/rnt_rar_over_dvb_stream_descriptor.h> +#include <libucsi/dvb/rnt_rar_over_ip_descriptor.h> +#include <libucsi/dvb/rnt_rnt_scan_descriptor.h> +#include <libucsi/dvb/ait_application_descriptor.h> +#include <libucsi/dvb/ait_application_name_descriptor.h> +#include <libucsi/dvb/ait_external_application_authorisation_descriptor.h> +#include <libucsi/dvb/ait_application_icons_descriptor.h> +*/ + +/** + * The following are not implemented just now + */ +/* +#include <libucsi/dvb/ait_transport_protocol_descriptor.h> +#include <libucsi/dvb/ait_dvb_j_application_descriptor.h> +#include <libucsi/dvb/ait_dvb_j_application_location_descriptor.h> +#include <libucsi/dvb/ait_dvb_html_application_descriptor.h> +#include <libucsi/dvb/ait_dvb_html_application_location_descriptor.h> +#include <libucsi/dvb/ait_dvb_html_application_boundary_descriptor.h> +#include <libucsi/dvb/ait_prefetch_descriptor.h> +#include <libucsi/dvb/ait_dii_location_descriptor.h> +#include <libucsi/dvb/ait_ip_signalling_descriptor.h> +*/ + +/** + * Enumeration of DVB descriptor tags. + */ +enum dvb_descriptor_tag { + dtag_dvb_network_name = 0x40, + dtag_dvb_service_list = 0x41, + dtag_dvb_stuffing = 0x42, + dtag_dvb_satellite_delivery_system = 0x43, + dtag_dvb_cable_delivery_system = 0x44, + dtag_dvb_vbi_data = 0x45, + dtag_dvb_vbi_teletext = 0x46, + dtag_dvb_bouquet_name = 0x47, + dtag_dvb_service = 0x48, + dtag_dvb_country_availability = 0x49, + dtag_dvb_linkage = 0x4a, + dtag_dvb_nvod_reference = 0x4b, + dtag_dvb_time_shifted_service = 0x4c, + dtag_dvb_short_event = 0x4d, + dtag_dvb_extended_event = 0x4e, + dtag_dvb_time_shifted_event = 0x4f, + dtag_dvb_component = 0x50, + dtag_dvb_mosaic = 0x51, + dtag_dvb_stream_identifier = 0x52, + dtag_dvb_ca_identifier = 0x53, + dtag_dvb_content = 0x54, + dtag_dvb_parental_rating = 0x55, + dtag_dvb_teletext = 0x56, + dtag_dvb_telephone = 0x57, + dtag_dvb_local_time_offset = 0x58, + dtag_dvb_subtitling = 0x59, + dtag_dvb_terrestial_delivery_system = 0x5a, + dtag_dvb_multilingual_network_name = 0x5b, + dtag_dvb_multilingual_bouquet_name = 0x5c, + dtag_dvb_multilingual_service_name = 0x5d, + dtag_dvb_multilingual_component = 0x5e, + dtag_dvb_private_data_specifier = 0x5f, + dtag_dvb_service_move = 0x60, + dtag_dvb_short_smoothing_buffer = 0x61, + dtag_dvb_frequency_list = 0x62, + dtag_dvb_partial_transport_stream = 0x63, + dtag_dvb_data_broadcast = 0x64, + dtag_dvb_scrambling = 0x65, + dtag_dvb_data_broadcast_id = 0x66, + dtag_dvb_transport_stream = 0x67, + dtag_dvb_dsng = 0x68, + dtag_dvb_pdc = 0x69, + dtag_dvb_ac3 = 0x6a, + dtag_dvb_ancillary_data = 0x6b, + dtag_dvb_cell_list = 0x6c, + dtag_dvb_cell_frequency_link = 0x6d, + dtag_dvb_announcement_support = 0x6e, + dtag_dvb_application_signalling = 0x6f, + dtag_dvb_adaptation_field_data = 0x70, + dtag_dvb_service_identifier = 0x71, + dtag_dvb_service_availability = 0x72, + dtag_dvb_default_authority = 0x73, + dtag_dvb_related_content = 0x74, + dtag_dvb_tva_id = 0x75, + dtag_dvb_content_identifier = 0x76, + dtag_dvb_time_slice_fec_identifier = 0x77, + dtag_dvb_ecm_repetition_rate = 0x78, + dtag_dvb_s2_satellite_delivery_descriptor= 0x79, + dtag_dvb_enhanced_ac3_descriptor = 0x7a, + dtag_dvb_dts_descriptor = 0x7b, + dtag_dvb_aac_descriptor = 0x7c, + dtag_dvb_extension_descriptor = 0x7f, + + /* descriptors which may only appear in an RNT */ + dtag_dvb_rnt_rar_over_dvb_stream = 0x40, + dtag_dvb_rnt_rar_over_ip = 0x41, + dtag_dvb_rnt_rnt_scan = 0x42, + + /* descriptors which may only appear in an AIT */ + dtag_dvb_ait_application = 0x00, + dtag_dvb_ait_application_name = 0x01, + dtag_dvb_ait_transport_protocol = 0x02, + dtag_dvb_ait_dvb_j_application = 0x03, + dtag_dvb_ait_dvb_j_application_location = 0x04, + dtag_dvb_ait_external_application_authorisation = 0x05, + dtag_dvb_ait_dvb_html_application = 0x08, + dtag_dvb_ait_dvb_html_application_location = 0x09, + dtab_dvb_ait_dvb_html_application_boundary = 0x0a, + dtag_dvb_ait_application_icons = 0x0b, + dtag_dvb_ait_prefetch = 0x0c, + dtag_dvb_ait_dii_location = 0x0d, + dtag_dvb_ait_ip_signalling = 0x11, + + /* descriptors which may only appear in INT */ + dtag_dvb_target_ip_address = 0x09, + dtag_dvb_target_ipv6_address = 0x0a, + dtag_dvb_ip_mac_platform_name = 0x0c, + dtag_dvb_ip_mac_platform_provider_name = 0x0d, + dtag_dvb_target_ip_slash = 0x0f, + dtag_dvb_target_ip_source_slash = 0x10, + dtag_dvb_target_ipv6_slash = 0x11, + dtag_dvb_target_ipv6_source_slash = 0x12, + dtag_dvb_ip_mac_stream_location = 0x13, + +}; + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/dit_section.c b/lib/libucsi/dvb/dit_section.c new file mode 100644 index 0000000..4f69d4e --- /dev/null +++ b/lib/libucsi/dvb/dit_section.c @@ -0,0 +1,32 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <libucsi/dvb/dit_section.h> + +struct dvb_dit_section * dvb_dit_section_codec(struct section * section) +{ + struct dvb_dit_section * ret = (struct dvb_dit_section *)section; + + if (section->length < 1) + return NULL; + + return ret; +} diff --git a/lib/libucsi/dvb/dit_section.h b/lib/libucsi/dvb/dit_section.h new file mode 100644 index 0000000..69fce4f --- /dev/null +++ b/lib/libucsi/dvb/dit_section.h @@ -0,0 +1,54 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_DIT_SECTION_H +#define _UCSI_DVB_DIT_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/section.h> + +/** + * dvb_dit_section structure. + */ +struct dvb_dit_section { + struct section head; + + EBIT2(uint8_t transition_flag : 1; , + uint8_t reserved : 7; ); +}; + +/** + * Process a dvb_dit_section. + * + * @param section Pointer to a generic section header. + * @return Pointer to a dvb_dit_section, or NULL on error. + */ +struct dvb_dit_section * dvb_dit_section_codec(struct section *section); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/dsng_descriptor.h b/lib/libucsi/dvb/dsng_descriptor.h new file mode 100644 index 0000000..6fd369b --- /dev/null +++ b/lib/libucsi/dvb/dsng_descriptor.h @@ -0,0 +1,80 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_DSNG_DESCRIPTOR +#define _UCSI_DVB_DSNG_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_dsng_descriptor structure. + */ +struct dvb_dsng_descriptor { + struct descriptor d; + + /* uint8_t data[] */ +} __ucsi_packed; + +/** + * Process a dvb_dsng_descriptor. + * + * @param d Generic descriptor structure. + * @return Pointer to a dvb_dsng_descriptor, or NULL on error. + */ +static inline struct dvb_dsng_descriptor* + dvb_dsng_descriptor_codec(struct descriptor* d) +{ + return (struct dvb_dsng_descriptor*) d; +} + +/** + * Accessor for the data field in a dvb_dsng_descriptor. + * + * @param d dvb_dsng_descriptor pointer. + * @return Pointer to the field. + */ +static inline uint8_t *dvb_dsng_descriptor_data(struct dvb_dsng_descriptor *d) +{ + return (uint8_t *) d + sizeof(struct dvb_dsng_descriptor); +} + +/** + * Determine the length of the data field in a dvb_dsng_descriptor. + * + * @param d dvb_dsng_descriptor pointer. + * @return Length of the field in bytes. + */ +static inline int dvb_dsng_descriptor_data_length(struct dvb_dsng_descriptor *d) +{ + return d->d.len; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/eit_section.c b/lib/libucsi/dvb/eit_section.c new file mode 100644 index 0000000..97b0261 --- /dev/null +++ b/lib/libucsi/dvb/eit_section.c @@ -0,0 +1,63 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <libucsi/dvb/eit_section.h> + +struct dvb_eit_section *dvb_eit_section_codec(struct section_ext * ext) +{ + uint8_t * buf = (uint8_t *) ext; + size_t pos = sizeof(struct section_ext); + size_t len = section_ext_length(ext); + + if (len < sizeof(struct dvb_eit_section)) + return NULL; + + bswap16(buf + pos); + pos += 2; + bswap16(buf + pos); + pos += 4; + + while (pos < len) { + struct dvb_eit_event * event = + (struct dvb_eit_event *) (buf + pos); + + if ((pos + sizeof(struct dvb_eit_event)) > len) + return NULL; + + bswap16(buf + pos); + bswap16(buf + pos + 10); + + pos += sizeof(struct dvb_eit_event); + + if ((pos + event->descriptors_loop_length) > len) + return NULL; + + if (verify_descriptors(buf + pos, event->descriptors_loop_length)) + return NULL; + + pos += event->descriptors_loop_length; + } + + if (pos != len) + return NULL; + + return (struct dvb_eit_section *) ext; +} diff --git a/lib/libucsi/dvb/eit_section.h b/lib/libucsi/dvb/eit_section.h new file mode 100644 index 0000000..a2f3e4f --- /dev/null +++ b/lib/libucsi/dvb/eit_section.h @@ -0,0 +1,160 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_EIT_SECTION_H +#define _UCSI_DVB_EIT_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/section.h> +#include <libucsi/dvb/types.h> + + +/** + * dvb_eit_section structure. + */ +struct dvb_eit_section { + struct section_ext head; + + uint16_t transport_stream_id; + uint16_t original_network_id; + uint8_t segment_last_section_number; + uint8_t last_table_id; + /* struct eit_event events[] */ +} __ucsi_packed; + +/** + * An entry in the events field of a dvb_eit_section. + */ +struct dvb_eit_event { + uint16_t event_id; + dvbdate_t start_time; + dvbduration_t duration; + EBIT3(uint16_t running_status : 3; , + uint16_t free_ca_mode : 1; , + uint16_t descriptors_loop_length:12; ); + /* struct descriptor descriptors[] */ +} __ucsi_packed; + +/** + * Process a dvb_eit_section. + * + * @param section Pointer to a generic section_ext structure. + * @return Pointer to a dvb_eit_section, or NULL on error. + */ +struct dvb_eit_section *dvb_eit_section_codec(struct section_ext *section); + +/** + * Accessor for the service_id field of an EIT. + * + * @param eit EIT pointer. + * @return The service_id. + */ +static inline uint16_t dvb_eit_section_service_id(struct dvb_eit_section *eit) +{ + return eit->head.table_id_ext; +} + +/** + * Iterator for the events field of a dvb_eit_section. + * + * @param eit dvb_eit_section pointer. + * @param pos Variable containing a pointer to the current dvb_eit_event. + */ +#define dvb_eit_section_events_for_each(eit, pos) \ + for ((pos) = dvb_eit_section_events_first(eit); \ + (pos); \ + (pos) = dvb_eit_section_events_next(eit, pos)) + +/** + * Iterator for the descriptors field of a dvb_eit_event. + * + * @param eit dvb_eit_event pointer. + * @param pos Variable containing a pointer to the current descriptor. + */ +#define dvb_eit_event_descriptors_for_each(event, pos) \ + for ((pos) = dvb_eit_event_descriptors_first(event); \ + (pos); \ + (pos) = dvb_eit_event_descriptors_next(event, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_eit_event * + dvb_eit_section_events_first(struct dvb_eit_section *eit) +{ + size_t pos = sizeof(struct dvb_eit_section); + + if (pos >= section_ext_length(&eit->head)) + return NULL; + + return (struct dvb_eit_event*) ((uint8_t *) eit + pos); +} + +static inline struct dvb_eit_event * + dvb_eit_section_events_next(struct dvb_eit_section *eit, + struct dvb_eit_event *pos) +{ + uint8_t *end = (uint8_t*) eit + section_ext_length(&eit->head); + uint8_t *next = (uint8_t *) pos + + sizeof(struct dvb_eit_event) + + pos->descriptors_loop_length; + + if (next >= end) + return NULL; + + return (struct dvb_eit_event *) next; +} + +static inline struct descriptor * + dvb_eit_event_descriptors_first(struct dvb_eit_event * t) +{ + if (t->descriptors_loop_length == 0) + return NULL; + + return (struct descriptor *) + ((uint8_t *) t + sizeof(struct dvb_eit_event)); +} + +static inline struct descriptor * + dvb_eit_event_descriptors_next(struct dvb_eit_event * t, + struct descriptor* pos) +{ + return next_descriptor((uint8_t*) t + sizeof(struct dvb_eit_event), + t->descriptors_loop_length, + pos); +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/extended_event_descriptor.h b/lib/libucsi/dvb/extended_event_descriptor.h new file mode 100644 index 0000000..bba04b0 --- /dev/null +++ b/lib/libucsi/dvb/extended_event_descriptor.h @@ -0,0 +1,232 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_EXTENDED_EVENT_DESCRIPTOR +#define _UCSI_DVB_EXTENDED_EVENT_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +/** + * dvb_extended_event_descriptor structure. + */ +struct dvb_extended_event_descriptor { + struct descriptor d; + + EBIT2(uint8_t descriptor_number : 4; , + uint8_t last_descriptor_number : 4; ); + iso639lang_t language_code; + uint8_t length_of_items; + /* struct dvb_extended_event_item items[] */ + /* struct dvb_extended_event_descriptor_part2 part2 */ +} __ucsi_packed; + +/** + * An entry in the items field of a dvb_extended_event_descriptor. + */ +struct dvb_extended_event_item { + uint8_t item_description_length; + /* uint8_t item_description[] */ + /* struct dvb_extended_event_item_part2 part2 */ +} __ucsi_packed; + +/** + * The second part of a dvb_extended_event_item, following the variable length + * description field. + */ +struct dvb_extended_event_item_part2 { + uint8_t item_length; + /* uint8_t item[] */ +} __ucsi_packed; + +/** + * The second part of a dvb_extended_event_descriptor, following the variable + * length items field. + */ +struct dvb_extended_event_descriptor_part2 { + uint8_t text_length; + /* uint8_t text[] */ +} __ucsi_packed; + +/** + * Process a dvb_extended_event_descriptor. + * + * @param d Generic descriptor structure. + * @return dvb_extended_event_descriptor pointer, or NULL on error. + */ +static inline struct dvb_extended_event_descriptor* + dvb_extended_event_descriptor_codec(struct descriptor* d) +{ + uint8_t* buf = (uint8_t*) d + 2; + uint32_t pos = 0; + uint32_t len = d->len; + struct dvb_extended_event_descriptor * p = + (struct dvb_extended_event_descriptor *) d; + struct dvb_extended_event_descriptor_part2 *p2; + + pos += sizeof(struct dvb_extended_event_descriptor) - 2; + + if (pos > len) + return NULL; + + pos += p->length_of_items; + + if (pos > len) + return NULL; + + p2 = (struct dvb_extended_event_descriptor_part2*) (buf+pos); + + pos += sizeof(struct dvb_extended_event_descriptor_part2); + + if (pos > len) + return NULL; + + pos += p2->text_length; + + if (pos != len) + return NULL; + + return p; +} + +/** + * Iterator for the items field of a dvb_extended_event_descriptor. + * + * @param d dvb_extended_event_descriptor pointer. + * @param pos Variable containing a pointer to the current dvb_extended_event_item. + */ +#define dvb_extended_event_descriptor_items_for_each(d, pos) \ + for ((pos) = dvb_extended_event_descriptor_items_first(d); \ + (pos); \ + (pos) = dvb_extended_event_descriptor_items_next(d, pos)) + +/** + * Accessor for the description field of a dvb_extended_event_item. + * + * @param d dvb_extended_event_item pointer. + * @return Pointer to the field. + */ +static inline uint8_t* + dvb_extended_event_item_description(struct dvb_extended_event_item *d) +{ + return (uint8_t*) d + sizeof(struct dvb_extended_event_item); +} + +/** + * Accessor for the second part of a dvb_extended_event_item. + * + * @param dvb_extended_event_item pointer. + * @return dvb_extended_event_item_part2 pointer. + */ +static inline struct dvb_extended_event_item_part2* + dvb_extended_event_item_part2(struct dvb_extended_event_item *d) +{ + return (struct dvb_extended_event_item_part2*) + ((uint8_t*) d + sizeof(struct dvb_extended_event_item) + + d->item_description_length); +} + +/** + * Accessor for the item field of a dvb_extended_event_item_part2. + * + * @param d dvb_extended_event_item_part2 pointer. + * @return Pointer to the item field. + */ +static inline uint8_t* + dvb_extended_event_item_part2_item(struct dvb_extended_event_item_part2 *d) +{ + return (uint8_t*) d + sizeof(struct dvb_extended_event_item_part2); +} + +/** + * Accessor for the second part of a dvb_extended_event_descriptor. + * + * @param d dvb_extended_event_descriptor pointer. + * @return dvb_extended_event_descriptor_part2 pointer. + */ +static inline struct dvb_extended_event_descriptor_part2* + dvb_extended_event_descriptor_part2(struct dvb_extended_event_descriptor *d) +{ + return (struct dvb_extended_event_descriptor_part2*) + ((uint8_t*) d + sizeof(struct dvb_extended_event_descriptor) + + d->length_of_items); +} + +/** + * Accessor for the text field of an dvb_extended_event_descriptor_part2. + * + * @param d dvb_extended_event_descriptor_part2 pointer. + * @return Pointer to the text field. + */ +static inline uint8_t* + dvb_extended_event_descriptor_part2_text(struct dvb_extended_event_descriptor_part2 *d) +{ + return (uint8_t*) + ((uint8_t*) d + sizeof(struct dvb_extended_event_descriptor_part2)); +} + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_extended_event_item* + dvb_extended_event_descriptor_items_first(struct dvb_extended_event_descriptor *d) +{ + if (d->length_of_items == 0) + return NULL; + + return (struct dvb_extended_event_item *) + ((uint8_t*) d + sizeof(struct dvb_extended_event_descriptor)); +} + +static inline struct dvb_extended_event_item* + dvb_extended_event_descriptor_items_next(struct dvb_extended_event_descriptor *d, + struct dvb_extended_event_item *pos) +{ + struct dvb_extended_event_item_part2* part2 = + dvb_extended_event_item_part2(pos); + uint8_t *end = (uint8_t*) d + sizeof(struct dvb_extended_event_descriptor) + d->length_of_items; + uint8_t *next = (uint8_t *) part2 + + sizeof(struct dvb_extended_event_item_part2) + + part2->item_length; + + if (next >= end) + return NULL; + + return (struct dvb_extended_event_item *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/frequency_list_descriptor.h b/lib/libucsi/dvb/frequency_list_descriptor.h new file mode 100644 index 0000000..4c18cec --- /dev/null +++ b/lib/libucsi/dvb/frequency_list_descriptor.h @@ -0,0 +1,107 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_FREQUENCY_LIST_DESCRIPTOR +#define _UCSI_DVB_FREQUENCY_LIST_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * Possible values for coding_type. + */ +enum { + DVB_CODING_TYPE_SATELLITE = 0x01, + DVB_CODING_TYPE_CABLE = 0x02, + DVB_CODING_TYPE_TERRESTRIAL = 0x03, +}; + +/** + * dvb_frequency_list_descriptor structure. + */ +struct dvb_frequency_list_descriptor { + struct descriptor d; + + EBIT2(uint8_t reserved : 6; , + uint8_t coding_type : 2; ); + /* uint32_t centre_frequencies [] */ +} __ucsi_packed; + +/** + * Process a dvb_frequency_list_descriptor. + * + * @param d Pointer to a generic descriptor structure. + * @return dvb_frequency_list_descriptor pointer, or NULL on error. + */ +static inline struct dvb_frequency_list_descriptor* + dvb_frequency_list_descriptor_codec(struct descriptor* d) +{ + uint32_t pos = 0; + uint8_t* buf = (uint8_t*) d + 2; + uint32_t len = d->len; + + pos += sizeof(struct dvb_frequency_list_descriptor) - 2; + + if ((len - pos) % 4) + return NULL; + + while(pos < len) { + bswap32(buf+pos); + pos += 4; + } + + return (struct dvb_frequency_list_descriptor*) d; +} + +/** + * Accessor for the centre_frequencies field of a dvb_frequency_list_descriptor. + * + * @param d dvb_frequency_list_descriptor pointer. + * @return Pointer to the field. + */ +static inline uint32_t * + dvb_frequency_list_descriptor_centre_frequencies(struct dvb_frequency_list_descriptor *d) +{ + return (uint32_t *) ((uint8_t *) d + sizeof(struct dvb_frequency_list_descriptor)); +} + +/** + * Determine the number of entries in the centre_frequencies field of a dvb_frequency_list_descriptor. + * + * @param d dvb_frequency_list_descriptor pointer. + * @return The number of entries. + */ +static inline int + dvb_frequency_list_descriptor_centre_frequencies_count(struct dvb_frequency_list_descriptor *d) +{ + return (d->d.len - 1) >> 2; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/int_section.c b/lib/libucsi/dvb/int_section.c new file mode 100644 index 0000000..c2bb15f --- /dev/null +++ b/lib/libucsi/dvb/int_section.c @@ -0,0 +1,79 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * Copyright (C) 2005 Patrick Boettcher (pb@linuxtv.org) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <libucsi/dvb/int_section.h> + +struct dvb_int_section * dvb_int_section_codec(struct section_ext *ext) +{ + uint8_t *buf = (uint8_t *) ext; + struct dvb_int_section *in = (struct dvb_int_section *) ext; + size_t pos = sizeof(struct section_ext); + size_t len = section_ext_length(ext); + + if (len < sizeof(struct dvb_int_section)) + return NULL; + + bswap32(buf+8); + bswap16(buf+12); + pos += 6; + + if (len - pos < in->platform_descriptors_length) + return NULL; + + if (verify_descriptors(buf + pos, in->platform_descriptors_length)) + return NULL; + + pos += in->platform_descriptors_length; + + while (pos < len) { + struct dvb_int_target *s2 = (struct dvb_int_target *) (buf + pos); + struct dvb_int_operational_loop *s3; + + bswap16(buf + pos); /* target_descriptor_loop_length swap */ + + if (len - pos < s2->target_descriptors_length) + return NULL; + + pos += sizeof(struct dvb_int_target); + + if (verify_descriptors(buf + pos, s2->target_descriptors_length)) + return NULL; + + pos += s2->target_descriptors_length; + + s3 = (struct dvb_int_operational_loop *) (buf + pos); + + bswap16(buf + pos); /* operational_descriptor_loop_length swap */ + + if (len - pos < s3->operational_descriptors_length) + return NULL; + + pos += sizeof(struct dvb_int_operational_loop); + + if (verify_descriptors(buf + pos, s3->operational_descriptors_length)) + return NULL; + + pos += s3->operational_descriptors_length; + } + + return (struct dvb_int_section *) ext; +} diff --git a/lib/libucsi/dvb/int_section.h b/lib/libucsi/dvb/int_section.h new file mode 100644 index 0000000..932c0e8 --- /dev/null +++ b/lib/libucsi/dvb/int_section.h @@ -0,0 +1,245 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * Copyright (C) 2005 Patrick Boettcher (pb@linuxtv.org) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ +#ifndef _UCSI_DVB_INT_SECTION_H +#define _UCSI_DVB_INT_SECTION_H + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/section.h> + +/** + * dvb_int_section structure - IP/MAC notification section. + */ +struct dvb_int_section { + struct section_ext head; + + EBIT2(uint32_t platform_id :24; , + uint32_t processing_order : 8; ); + EBIT2(uint16_t reserved2 : 4; , + uint16_t platform_descriptors_length :12; ); + /* struct descriptor platform_descriptors[] */ + /* struct dvb_int_target target_loop[] */ +} __ucsi_packed; + +/** + * An entry in the target_loop field of a dvb_int_section. + */ +struct dvb_int_target { + EBIT2(uint16_t reserved3 : 4; , + uint16_t target_descriptors_length :12; ); + /* struct descriptor target_descriptors[] */ + /* struct dvb_int_operational_loop operational_loop */ +} __ucsi_packed; + +/** + * The operational_loop field in a dvb_int_target. + */ +struct dvb_int_operational_loop { + EBIT2(uint16_t reserved4 : 4; , + uint16_t operational_descriptors_length :12; ); + /* struct descriptor operational_descriptors[] */ +} __ucsi_packed; + +/** + * Process a dvb_int_section. + * + * @param section Generic section_ext pointer. + * @return dvb_int_section pointer, or NULL on error. + */ +extern struct dvb_int_section * dvb_int_section_codec(struct section_ext *section); + +/** + * Accessor for the action_type field of an INT. + * + * @param intp INT pointer. + * @return The action_type. + */ +static inline uint8_t dvb_int_section_action_type(struct dvb_int_section *intp) +{ + return intp->head.table_id_ext >> 8; +} + +/** + * Accessor for the platform_id_hash field of an INT. + * + * @param intp INT pointer. + * @return The platform_id_hash. + */ +static inline uint8_t dvb_int_section_platform_id_hash(struct dvb_int_section *intp) +{ + return intp->head.table_id_ext & 0xff; +} + +/** + * Iterator for platform_descriptors field in a dvb_int_section. + * + * @param intp dvb_int_section pointer. + * @param pos Variable holding a pointer to the current descriptor. + */ +#define dvb_int_section_platform_descriptors_for_each(intp, pos) \ + for ((pos) = dvb_int_section_platform_descriptors_first(intp); \ + (pos); \ + (pos) = dvb_int_section_platform_descriptors_next(intp, pos)) + +/** + * Iterator for the target_loop field in a dvb_int_section. + * + * @param intp dvb_int_section pointer. + * @param pos Variable holding a pointer to the current dvb_int_target. + */ +#define dvb_int_section_target_loop_for_each(intp,pos) \ + for ((pos) = dvb_int_section_target_loop_first(intp); \ + (pos); \ + (pos) = dvb_int_section_target_loop_next(intp, pos)) + +/** + * Iterator for the target_descriptors field in a dvb_int_target. + * + * @param target dvb_int_target pointer. + * @param pos Variable holding a pointer to the current descriptor. + */ +#define dvb_int_target_target_descriptors_for_each(target, pos) \ + for ((pos) = dvb_int_target_target_descriptors_first(target); \ + (pos); \ + (pos) = dvb_int_target_target_descriptors_next(target, pos)) + +/** + * Accessor for the operational_loop field of a dvb_int_target. + * + * @param target dvb_int_target pointer. + * @return Pointer to a dvb_int_operational_loop. + */ +static inline struct dvb_int_operational_loop * + dvb_int_target_operational_loop(struct dvb_int_target *target) +{ + return (struct dvb_int_operational_loop *) + ((uint8_t *) target + sizeof(struct dvb_int_target) + target->target_descriptors_length); +} + +/** + * Iterator for the operational_descriptors field in a dvb_int_operational_loop. + * + * @param oploop dvb_int_operational_loop pointer. + * @param pos Variable holding a pointer to the current descriptor. + */ +#define dvb_int_operational_loop_operational_descriptors_for_each(oploop, pos) \ + for ((pos) = dvb_int_operational_loop_operational_descriptors_first(oploop); \ + (pos); \ + (pos) = dvb_int_operational_loop_operational_descriptors_next(oploop, pos)) + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct descriptor * + dvb_int_section_platform_descriptors_first(struct dvb_int_section *in) +{ + if (in->platform_descriptors_length == 0) + return NULL; + + return (struct descriptor *) + ((uint8_t *) in + sizeof(struct dvb_int_section)); +} + +static inline struct descriptor * + dvb_int_section_platform_descriptors_next(struct dvb_int_section *in, + struct descriptor* pos) +{ + return next_descriptor((uint8_t*) in + sizeof(struct dvb_int_section), + in->platform_descriptors_length, + pos); +} + +static inline struct dvb_int_target * + dvb_int_section_target_loop_first(struct dvb_int_section *in) +{ + if (sizeof(struct dvb_int_section) + in->platform_descriptors_length >= (uint32_t) section_ext_length((struct section_ext *) in)) + return NULL; + + return (struct dvb_int_target *) + ((uint8_t *) in + sizeof(struct dvb_int_section) + in->platform_descriptors_length); +} + +static inline struct dvb_int_target * + dvb_int_section_target_loop_next(struct dvb_int_section *in, + struct dvb_int_target *pos) +{ + struct dvb_int_operational_loop *ol = dvb_int_target_operational_loop(pos); + struct dvb_int_target *next = + (struct dvb_int_target *) ( (uint8_t *) pos + + sizeof(struct dvb_int_target) + pos->target_descriptors_length + + sizeof(struct dvb_int_operational_loop) + ol->operational_descriptors_length); + struct dvb_int_target *end = + (struct dvb_int_target *) ((uint8_t *) in + section_ext_length((struct section_ext *) in) ); + + if (next >= end) + return 0; + return next; +} + +static inline struct descriptor * + dvb_int_target_target_descriptors_first(struct dvb_int_target *tl) +{ + if (tl->target_descriptors_length == 0) + return NULL; + + return (struct descriptor *) + ((uint8_t *) tl + sizeof(struct dvb_int_target)); +} + +static inline struct descriptor * + dvb_int_target_target_descriptors_next(struct dvb_int_target *tl, + struct descriptor* pos) +{ + return next_descriptor((uint8_t*) tl + sizeof(struct dvb_int_target), + tl->target_descriptors_length, + pos); +} + +static inline struct descriptor * + dvb_int_operational_loop_operational_descriptors_first(struct dvb_int_operational_loop *ol) +{ + if (ol->operational_descriptors_length == 0) + return NULL; + + return (struct descriptor *) + ((uint8_t *) ol + sizeof(struct dvb_int_operational_loop)); +} + +static inline struct descriptor * + dvb_int_operational_loop_operational_descriptors_next(struct dvb_int_operational_loop *ol, + struct descriptor* pos) +{ + return next_descriptor((uint8_t*) ol + sizeof(struct dvb_int_operational_loop), + ol->operational_descriptors_length, + pos); +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/ip_mac_platform_name_descriptor.h b/lib/libucsi/dvb/ip_mac_platform_name_descriptor.h new file mode 100644 index 0000000..c470e89 --- /dev/null +++ b/lib/libucsi/dvb/ip_mac_platform_name_descriptor.h @@ -0,0 +1,87 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * Copyright (C) 2006 Stephane Este-Gracias (sestegra@free.fr) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_IP_MAC_PLATFORM_NAME_DESCRIPTOR +#define _UCSI_DVB_IP_MAC_PLATFORM_NAME_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/types.h> + +/** + * dvb_ip_platform_name_descriptor structure. + */ +struct dvb_ip_platform_name_descriptor { + struct descriptor d; + + iso639lang_t language_code; + /* uint8_t text[] */ +} __ucsi_packed; + +/** + * Process a dvb_ip_platform_name_descriptor. + * + * @param d Pointer to a generic descriptor. + * @return dvb_ip_platform_name_descriptor pointer, or NULL on error. + */ +static inline struct dvb_ip_platform_name_descriptor* + dvb_ip_platform_name_descriptor_codec(struct descriptor* d) +{ + if (d->len < (sizeof(struct dvb_ip_platform_name_descriptor) - 2)) + return NULL; + + return (struct dvb_ip_platform_name_descriptor*) d; +} + +/** + * Accessor for the text field of a dvb_ip_platform_name_descriptor. + * + * @param d dvb_ip_platform_name_descriptor pointer. + * @return Pointer to the field. + */ +static inline uint8_t * + dvb_ip_platform_name_descriptor_text(struct dvb_ip_platform_name_descriptor *d) +{ + return (uint8_t *) d + sizeof(struct dvb_ip_platform_name_descriptor); +} + +/** + * Determine the length of the text field of a dvb_ip_platform_name_descriptor. + * + * @param d dvb_ip_platform_name_descriptor pointer. + * @return Length of the field in bytes. + */ +static inline int + dvb_ip_platform_name_descriptor_text_length(struct dvb_ip_platform_name_descriptor *d) +{ + return d->d.len - 3; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/ip_mac_platform_provider_name_descriptor.h b/lib/libucsi/dvb/ip_mac_platform_provider_name_descriptor.h new file mode 100644 index 0000000..ba95b8f --- /dev/null +++ b/lib/libucsi/dvb/ip_mac_platform_provider_name_descriptor.h @@ -0,0 +1,87 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * Copyright (C) 2006 Stephane Este-Gracias (sestegra@free.fr) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_IP_MAC_PLATFORM_PROVIDER_NAME_DESCRIPTOR +#define _UCSI_DVB_IP_MAC_PLATFORM_PROVIDER_NAME_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/types.h> + +/** + * dvb_ip_platform_provider_name_descriptor structure. + */ +struct dvb_ip_platform_provider_name_descriptor { + struct descriptor d; + + iso639lang_t language_code; + /* uint8_t text[] */ +} __ucsi_packed; + +/** + * Process a dvb_ip_platform_provider_name_descriptor. + * + * @param d Pointer to a generic descriptor. + * @return dvb_ip_platform_provider_name_descriptor pointer, or NULL on error. + */ +static inline struct dvb_ip_platform_provider_name_descriptor* + dvb_ip_platform_provider_name_descriptor_codec(struct descriptor* d) +{ + if (d->len < (sizeof(struct dvb_ip_platform_provider_name_descriptor) - 2)) + return NULL; + + return (struct dvb_ip_platform_provider_name_descriptor*) d; +} + +/** + * Accessor for the text field of a dvb_ip_platform_provider_name_descriptor. + * + * @param d dvb_ip_platform_provider_name_descriptor pointer. + * @return Pointer to the field. + */ +static inline uint8_t * + dvb_ip_platform_provider_name_descriptor_text(struct dvb_ip_platform_provider_name_descriptor *d) +{ + return (uint8_t *) d + sizeof(struct dvb_ip_platform_provider_name_descriptor); +} + +/** + * Determine the length of the text field of a dvb_ip_platform_provider_name_descriptor. + * + * @param d dvb_ip_platform_provider_name_descriptor pointer. + * @return Length of the field in bytes. + */ +static inline int + dvb_ip_platform_provider_name_descriptor_text_length(struct dvb_ip_platform_provider_name_descriptor *d) +{ + return d->d.len - 3; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/ip_mac_stream_location_descriptor.h b/lib/libucsi/dvb/ip_mac_stream_location_descriptor.h new file mode 100644 index 0000000..36216d6 --- /dev/null +++ b/lib/libucsi/dvb/ip_mac_stream_location_descriptor.h @@ -0,0 +1,73 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * Copyright (C) 2006 Stephane Este-Gracias (sestegra@free.fr) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_IP_MAC_STREAM_LOCATION_DESCRIPTOR +#define _UCSI_DVB_IP_MAC_PLATFORM_PROVIDER_NAME_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/types.h> + +/** + * dvb_ip_mac_stream_location_descriptor structure. + */ +struct dvb_ip_mac_stream_location_descriptor { + struct descriptor d; + + uint16_t network_id; + uint16_t original_network_id; + uint16_t transport_stream_id; + uint16_t service_id; + uint8_t component_tag; +} __ucsi_packed; + +/** + * Process a dvb_ip_mac_stream_location_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_ip_mac_stream_location_descriptor pointer, or NULL on error. + */ +static inline struct dvb_ip_mac_stream_location_descriptor* + dvb_ip_mac_stream_location_descriptor_codec(struct descriptor* d) +{ + uint8_t* buf = (uint8_t*) d + 2; + + if (d->len != (sizeof(struct dvb_ip_mac_stream_location_descriptor) - 2)) + return NULL; + + bswap16(buf); + bswap16(buf+2); + bswap16(buf+4); + bswap16(buf+6); + + return (struct dvb_ip_mac_stream_location_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/linkage_descriptor.h b/lib/libucsi/dvb/linkage_descriptor.h new file mode 100644 index 0000000..d2be789 --- /dev/null +++ b/lib/libucsi/dvb/linkage_descriptor.h @@ -0,0 +1,480 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_LINKAGE_DESCRIPTOR +#define _UCSI_DVB_LINKAGE_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +/** + * Possible values for linkage_type. + */ +enum { + DVB_LINKAGE_TYPE_INFORMATION = 0x01, + DVB_LINKAGE_TYPE_EPG = 0x02, + DVB_LINKAGE_TYPE_CA_REPLACEMENT = 0x03, + DVB_LINKAGE_TYPE_TS_WITH_BAT_NIT = 0x04, + DVB_LINKAGE_TYPE_SERVICE_REPLACMENT = 0x05, + DVB_LINKAGE_TYPE_DATA_BCAST = 0x06, + DVB_LINKAGE_TYPE_RCS_MAP = 0x07, + DVB_LINKAGE_TYPE_MOBILE_HANDOVER = 0x08, + DVB_LINKAGE_TYPE_SOFTWARE_UPDATE = 0x09, + DVB_LINKAGE_TYPE_TS_WITH_SSU_BAT_NIT = 0x0a, + DVB_LINKAGE_TYPE_IP_MAC_NOTIFICATION = 0x0b, + DVB_LINKAGE_TYPE_TS_WITH_INT_BAT_NIT = 0x0c, +}; + +/** + * Possible values for hand_over_type. + */ +enum { + DVB_HAND_OVER_TYPE_IDENTICAL_NEIGHBOURING_COUNTRY = 0x01, + DVB_HAND_OVER_TYPE_LOCAL_VARIATION = 0x02, + DVB_HAND_OVER_TYPE_ASSOCIATED_SERVICE = 0x03, +}; + +/** + * Possible values for origin_type. + */ +enum { + DVB_ORIGIN_TYPE_NIT = 0x00, + DVB_ORIGIN_TYPE_SDT = 0x01, +}; + +/** + * dvb_linkage_descriptor structure. + */ +struct dvb_linkage_descriptor { + struct descriptor d; + + uint16_t transport_stream_id; + uint16_t original_network_id; + uint16_t service_id; + uint8_t linkage_type; + /* uint8_t data[] */ +} __ucsi_packed; + +/** + * Data for a linkage_type of 0x08. + */ +struct dvb_linkage_data_08 { + EBIT3(uint8_t hand_over_type : 4; , + uint8_t reserved : 3; , + uint8_t origin_type : 1; ); + /* uint16_t network_id if hand_over_type == 1,2,3 */ + /* uint16_t initial_service_id if origin_type = 0 */ + /* uint8_t data[] */ +} __ucsi_packed; + +/** + * Data for an linkage_type of 0x0b (IP/MAC Notification Table). + */ +struct dvb_linkage_data_0b { + uint8_t platform_id_data_length; + /* struct platform_id ids[] */ +} __ucsi_packed; + +/** + * Entries in the ids field of a dvb_linkage_data_0b. + */ +struct dvb_platform_id { + EBIT2(uint32_t platform_id : 24; , + uint8_t platform_name_loop_length : 8; ); + /* struct platform_name names[] */ +} __ucsi_packed; + +/** + * Entries in the names field of a dvb_platform_id. + */ +struct dvb_platform_name { + iso639lang_t language_code; + uint8_t platform_name_length; + /* uint8_t text[] */ +} __ucsi_packed; + +/** + * Data for a linkage_type of 0x0c (IP/MAC Notification Table). + */ +struct dvb_linkage_data_0c { + uint8_t table_type; + /* uint16_t bouquet_id if table_type == 0x02 */ +} __ucsi_packed; + + +/** + * Process a dvb_linkage_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_linkage_descriptor pointer, or NULL on error. + */ +static inline struct dvb_linkage_descriptor* + dvb_linkage_descriptor_codec(struct descriptor* d) +{ + uint32_t pos = 0; + uint8_t* buf = (uint8_t*) d + 2; + uint32_t len = d->len; + struct dvb_linkage_descriptor *p = + (struct dvb_linkage_descriptor*) d; + + if (len < (sizeof(struct dvb_linkage_descriptor) - 2)) + return NULL; + + bswap16(buf); + bswap16(buf+2); + bswap16(buf+4); + + pos += sizeof(struct dvb_linkage_descriptor) - 2; + + if (p->linkage_type == 0x08) { + struct dvb_linkage_data_08 *d08; + + if ((len - pos) < sizeof(struct dvb_linkage_data_08)) + return NULL; + d08 = (struct dvb_linkage_data_08 *) (buf+pos); + pos += sizeof(struct dvb_linkage_data_08); + + switch(d08->hand_over_type) { + case 1: + case 2: + case 3: + if ((len - pos) < 2) + return NULL; + bswap16(buf+pos); + pos += 2; + break; + } + if (d08->origin_type == 0) { + if ((len - pos) < 2) + return NULL; + bswap16(buf+pos); + pos+=2; + } + + } else if (p->linkage_type == 0x0b) { + uint32_t pos2=0; + struct dvb_linkage_data_0b *l_0b = (struct dvb_linkage_data_0b *) (buf + pos); + + if ((len - pos) < sizeof(struct dvb_linkage_data_0b)) + return NULL; + + pos += sizeof(struct dvb_linkage_data_0b); + if ((len - pos) < l_0b->platform_id_data_length) + return NULL; + + while (pos2 < l_0b->platform_id_data_length) { + bswap32(buf + pos + pos2); + + struct dvb_platform_id *p_id = (struct dvb_platform_id *) (buf + pos + pos2); + if ((len - pos - pos2) < p_id->platform_name_loop_length) + return NULL; + + pos2 += sizeof(struct dvb_platform_id) + p_id->platform_name_loop_length; + } + + pos += pos2; + } else if (p->linkage_type == 0x0c) { + struct dvb_linkage_data_0c *l_0c = (struct dvb_linkage_data_0c *) (buf + pos); + + if ((len - pos) < sizeof(struct dvb_linkage_data_0c)) + return NULL; + pos += sizeof(struct dvb_linkage_data_0c); + + if (l_0c->table_type == 0x02) { + if ((len - pos) < 2) + return NULL; + bswap16(buf+pos); + } + } + + return (struct dvb_linkage_descriptor*) d; +} + +/** + * Accessor for the data field of a dvb_linkage_descriptor. + * + * @param d dvb_linkage_descriptor pointer. + * @return Pointer to the data field. + */ +static inline uint8_t * + dvb_linkage_descriptor_data(struct dvb_linkage_descriptor *d) +{ + return (uint8_t *) d + sizeof(struct dvb_linkage_descriptor); +} + +/** + * Determine the length of the data field of a dvb_linkage_descriptor. + * + * @param d dvb_linkage_descriptor pointer. + * @return Length of the field in bytes. + */ +static inline int + dvb_linkage_descriptor_data_length(struct dvb_linkage_descriptor *d) +{ + return d->d.len - 7; +} + +/** + * Accessor for a dvb_linkage_data_08 pointer. + * + * @param d dvb_linkage_descriptor pointer. + * @return Pointer to the data field. + */ +static inline struct dvb_linkage_data_08 * + dvb_linkage_data_08(struct dvb_linkage_descriptor *d) +{ + if (d->linkage_type != 0x08) + return NULL; + return (struct dvb_linkage_data_08 *) dvb_linkage_descriptor_data(d); +} + +/** + * Accessor for the network_id field of a dvb_linkage_data_08. + * + * @param d dvb_linkage_descriptor pointer + * @param d08 dvb_linkage_data_08 pointer. + * @return network_id, or -1 if not present + */ +static inline int + dvb_linkage_data_08_network_id(struct dvb_linkage_descriptor *d, struct dvb_linkage_data_08 *d08) +{ + if (d->linkage_type != 0x08) + return -1; + + switch(d08->hand_over_type) { + case 1: + case 2: + case 3: + return *((uint16_t*) ((uint8_t*) d08 + sizeof(struct dvb_linkage_data_08))); + } + + return -1; +} + +/** + * Accessor for the initial_service_id field of a dvb_linkage_data_08. + * + * @param d dvb_linkage_descriptor pointer + * @param d08 dvb_linkage_data_08 pointer. + * @return initial_service_id, or -1 if not present + */ +static inline int + dvb_linkage_data_08_initial_service_id(struct dvb_linkage_descriptor *d, struct dvb_linkage_data_08 *d08) +{ + uint8_t *pos; + + if (d->linkage_type != 0x08) + return -1; + if (d08->origin_type != 0) + return -1; + + pos = ((uint8_t*) d08) + sizeof(struct dvb_linkage_data_08); + switch(d08->hand_over_type) { + case 1: + case 2: + case 3: + pos +=2; + break; + } + + return *((uint16_t*) pos); +} + +/** + * Accessor for the data field of a dvb_linkage_data_08. + * + * @param d dvb_linkage_descriptor pointer + * @param d08 dvb_linkage_data_08 pointer. + * @param length Pointer to int destination for data length. + * @return Pointer to the data field, or NULL if invalid + */ +static inline uint8_t * + dvb_linkage_data_08_data(struct dvb_linkage_descriptor *d, struct dvb_linkage_data_08 *d08, int *length) +{ + uint8_t *pos; + int used = 0; + + if (d->linkage_type != 0x08) { + *length = 0; + return NULL; + } + + pos = ((uint8_t*) d08) + sizeof(struct dvb_linkage_data_08); + switch(d08->hand_over_type) { + case 1: + case 2: + case 3: + pos += 2; + used += 2; + break; + } + if (d08->origin_type == 0) { + pos+=2; + used+=2; + } + + *length = dvb_linkage_descriptor_data_length(d) - (sizeof(struct dvb_linkage_data_08) + used); + return pos; +} + +/** + * Accessor for a dvb_linkage_data_0b pointer. + * + * @param d dvb_linkage_descriptor pointer. + * @return Pointer to the data field. + */ +static inline struct dvb_linkage_data_0b * + dvb_linkage_data_0b(struct dvb_linkage_descriptor *d) +{ + if (d->linkage_type != 0x0b) + return NULL; + return (struct dvb_linkage_data_0b *) dvb_linkage_descriptor_data(d); +} + +/** + * Iterator for the platform_id field of a dvb_linkage_data_0b. + * + * @param linkage dvb_linkage_data_0b pointer. + * @param pos Variable containing a pointer to the current dvb_platform_id. + */ +#define dvb_linkage_data_0b_platform_id_for_each(linkage, pos) \ + for ((pos) = dvb_platform_id_first(linkage); \ + (pos); \ + (pos) = dvb_platform_id_next(linkage, pos)) + +/** + * Iterator for the platform_name field of a dvb_platform_id. + * + * @param platid dvb_platform_id pointer. + * @param pos Variable containing a pointer to the current dvb_platform_name. + */ +#define dvb_platform_id_platform_name_for_each(platid, pos) \ + for ((pos) = dvb_platform_name_first(platid); \ + (pos); \ + (pos) = dvb_platform_name_next(platid, pos)) + +/** + * Accessor for the text field of a dvb_platform_name. + * + * @param p dvb_platform_name pointer. + * @return Pointer to the field. + */ +static inline uint8_t * + dvb_platform_name_text(struct dvb_platform_name *p) +{ + return (uint8_t *) p + sizeof(struct dvb_platform_name); +} + +/** + * Accessor for a dvb_linkage_data_0c pointer. + * + * @param d dvb_linkage_descriptor pointer. + * @return Pointer to the data field. + */ +static inline struct dvb_linkage_data_0c * + dvb_linkage_data_0c(struct dvb_linkage_descriptor *d) +{ + if (d->linkage_type != 0x0c) + return NULL; + return (struct dvb_linkage_data_0c *) dvb_linkage_descriptor_data(d); +} + +/** + * Accessor for the bouquet_id field of a dvb_linkage_data_0c if table_id == 0x02. + * + * @param l_0c dvb_linkage_data_0c pointer. + * @return The bouquet field, or -1 on error. + */ +static inline int + dvb_linkage_data_0c_bouquet_id(struct dvb_linkage_data_0c *l_0c) +{ + if (l_0c->table_type != 0x02) + return -1; + + return *((uint16_t *) ((uint8_t*) l_0c + 1)); +} + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_platform_id * + dvb_platform_id_first(struct dvb_linkage_data_0b *d) +{ + if (d->platform_id_data_length == 0) + return NULL; + + return (struct dvb_platform_id *) ((uint8_t *) d + sizeof(struct dvb_linkage_data_0b)); +} + +static inline struct dvb_platform_id * + dvb_platform_id_next(struct dvb_linkage_data_0b *d, + struct dvb_platform_id *pos) +{ + uint8_t *end = (uint8_t *) d + d->platform_id_data_length; + uint8_t *next = (uint8_t *) pos + + sizeof(struct dvb_platform_id) + + pos->platform_name_loop_length; + + if (next >= end) + return NULL; + + return (struct dvb_platform_id *) next; +} + +static inline struct dvb_platform_name * + dvb_platform_name_first(struct dvb_platform_id *p) +{ + if (p->platform_name_loop_length == 0) + return NULL; + + return (struct dvb_platform_name *) ((uint8_t *) p + sizeof(struct dvb_platform_id)); +} + +static inline struct dvb_platform_name * + dvb_platform_name_next(struct dvb_platform_id *p, + struct dvb_platform_name *pos) +{ + uint8_t *end = (uint8_t *) p + p->platform_name_loop_length; + uint8_t *next = (uint8_t *) pos + + sizeof(struct dvb_platform_name) + + pos->platform_name_length; + + if (next >= end) + return NULL; + + return (struct dvb_platform_name *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/local_time_offset_descriptor.h b/lib/libucsi/dvb/local_time_offset_descriptor.h new file mode 100644 index 0000000..d0eebb3 --- /dev/null +++ b/lib/libucsi/dvb/local_time_offset_descriptor.h @@ -0,0 +1,127 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_LOCAL_TIME_OFFSET_DESCRIPTOR +#define _UCSI_DVB_LOCAL_TIME_OFFSET_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> +#include <libucsi/dvb/types.h> + +/** + * dvb_local_time_offset_descriptor parameter. + */ +struct dvb_local_time_offset_descriptor { + struct descriptor d; + + /* struct dvb_local_time_offset offsets[] */ +} __ucsi_packed; + +/** + * Entry in the offsets field of dvb_local_time_offset_descriptor. + */ +struct dvb_local_time_offset { + iso639country_t country_code; + EBIT3(uint8_t country_region_id : 6; , + uint8_t reserved : 1; , + uint8_t local_time_offset_polarity : 1; ); + dvbhhmm_t local_time_offset; + dvbdate_t time_of_change; + dvbhhmm_t next_time_offset; +} __ucsi_packed; + +/** + * Process a dvb_local_time_offset_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_local_time_offset_descriptor pointer, or NULL on error. + */ +static inline struct dvb_local_time_offset_descriptor* + dvb_local_time_offset_descriptor_codec(struct descriptor* d) +{ + uint32_t len = d->len; + uint32_t pos = 0; + + if (len % sizeof(struct dvb_local_time_offset)) + return NULL; + + while(pos < len) { + pos += sizeof(struct dvb_local_time_offset); + } + + return (struct dvb_local_time_offset_descriptor*) d; +} + +/** + * Iterator for the offsets field of a dvb_local_time_offset_descriptor. + * + * @param d dvb_local_time_offset_descriptor pointer. + * @param pos Variable containing a pointer to the current dvb_local_time_offset. + */ +#define dvb_local_time_offset_descriptor_offsets_for_each(d, pos) \ + for ((pos) = dvb_local_time_offset_descriptor_offsets_first(d); \ + (pos); \ + (pos) = dvb_local_time_offset_descriptor_offsets_next(d, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_local_time_offset* + dvb_local_time_offset_descriptor_offsets_first(struct dvb_local_time_offset_descriptor *d) +{ + if (d->d.len == 0) + return NULL; + + return (struct dvb_local_time_offset *) + ((uint8_t*) d + sizeof(struct dvb_local_time_offset_descriptor)); +} + +static inline struct dvb_local_time_offset* + dvb_local_time_offset_descriptor_offsets_next(struct dvb_local_time_offset_descriptor *d, + struct dvb_local_time_offset *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_local_time_offset); + + if (next >= end) + return NULL; + + return (struct dvb_local_time_offset *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/mhp_data_broadcast_id_descriptor.h b/lib/libucsi/dvb/mhp_data_broadcast_id_descriptor.h new file mode 100644 index 0000000..d79b48c --- /dev/null +++ b/lib/libucsi/dvb/mhp_data_broadcast_id_descriptor.h @@ -0,0 +1,110 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_MHP_DATA_BROADCAST_ID_DESCRIPTOR +#define _UCSI_DVB_MHP_DATA_BROADCAST_ID_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#ifndef _UCSI_DVB_DATA_BROADCAST_ID_DESCRIPTOR +#error Must include dvb/data_broadcast_id_descriptor.h first +#endif + +/** + * Broadcast IDs for MHP. + */ +enum { + DVB_BROADCAST_ID_MHP_OBJECT_CAROUSEL = 0x00f0, + DVB_BROADCAST_ID_MHP_MPE = 0x00f1, +}; + +/** + * dvb_mhp_data_broadcast_id_descriptor structure. + */ +struct dvb_mhp_data_broadcast_id_descriptor { + struct dvb_data_broadcast_id_descriptor d; + /* uint16_t application_type[] */ +} __ucsi_packed; + +/** + * Process a dvb_mhp_data_broadcast_id_descriptor. + * + * @param d Generic descriptor structure. + * @return dvb_mhp_data_broadcast_id_descriptor pointer, or NULL on error. + */ +static inline struct dvb_mhp_data_broadcast_id_descriptor* + dvb_mhp_data_broadcast_id_descriptor_codec(struct dvb_data_broadcast_id_descriptor* d) +{ + uint8_t * buf; + int len; + int pos = 0; + struct dvb_mhp_data_broadcast_id_descriptor *res = + (struct dvb_mhp_data_broadcast_id_descriptor *) d; + + if ((res->d.data_broadcast_id < 0xf0) || (res->d.data_broadcast_id > 0xfe)) + return NULL; + + buf = dvb_data_broadcast_id_descriptor_id_selector_byte(d); + len = dvb_data_broadcast_id_descriptor_id_selector_byte_length(d); + + if (len % 2) + return NULL; + + while(pos < len) { + bswap16(buf+pos); + pos+=2; + } + + return res; +} + +/** + * Accessor for the application_type field of a dvb_mhp_data_broadcast_id_descriptor. + * + * @param d dvb_mhp_data_broadcast_id_descriptor pointer. + * @return Pointer to the field. + */ +static inline uint16_t * + dvb_mhp_data_broadcast_id_descriptor_id_application_type(struct dvb_mhp_data_broadcast_id_descriptor *d) +{ + return (uint16_t *) dvb_data_broadcast_id_descriptor_id_selector_byte((struct dvb_data_broadcast_id_descriptor*) d); +} + +/** + * Determine the number of entries in the application_type field of a dvb_mhp_data_broadcast_id_descriptor. + * + * @param d dvb_data_broadcast_id_descriptor pointer. + * @return Length of the field in bytes. + */ +static inline int + dvb_mhp_data_broadcast_id_descriptor_id_application_type_count(struct dvb_mhp_data_broadcast_id_descriptor *d) +{ + return dvb_data_broadcast_id_descriptor_id_selector_byte_length((struct dvb_data_broadcast_id_descriptor*) d) >> 1; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/mosaic_descriptor.h b/lib/libucsi/dvb/mosaic_descriptor.h new file mode 100644 index 0000000..6da1e95 --- /dev/null +++ b/lib/libucsi/dvb/mosaic_descriptor.h @@ -0,0 +1,324 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_MOSAIC_DESCRIPTOR +#define _UCSI_DVB_MOSAIC_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_mosaic_descriptor structure. + */ +struct dvb_mosaic_descriptor { + struct descriptor d; + + EBIT4(uint8_t mosaic_entry_point : 1; , + uint8_t number_of_horiz_elementary_cells: 3; , + uint8_t reserved : 1; , + uint8_t number_of_vert_elementary_cells : 3; ); + /* struct dvb_mosaic_info infos[] */ +} __ucsi_packed; + +/** + * An entry in the infos field of a dvb_mosaic_descriptor. + */ +struct dvb_mosaic_info { + EBIT3(uint16_t logical_cell_id : 6; , + uint16_t reserved : 7; , + uint16_t logical_cell_presentation_info : 3; ); + uint8_t elementary_cell_field_length; + /* struct dvb_mosaic_elementary_cell_field fields[] */ + /* struct dvb_mosaic_info_part2 part2 */ + /* struct dvb_mosaic_linkage linkage */ +} __ucsi_packed; + +/** + * An entry in the fields field of a dvb_mosaic_info. + */ +struct dvb_mosaic_elementary_cell_field { + EBIT2(uint8_t reserved : 2; , + uint8_t elementary_cell_id : 6; ); +} __ucsi_packed; + +/** + * Part2 of dvb_mosaic_info, following the variable length fields field. + */ +struct dvb_mosaic_info_part2 { + uint8_t cell_linkage_info; +} __ucsi_packed; + +struct dvb_mosaic_linkage_01 { + uint16_t bouquet_id; +} __ucsi_packed; + +struct dvb_mosaic_linkage_02 { + uint16_t original_network_id; + uint16_t transport_stream_id; + uint16_t service_id; +} __ucsi_packed; + +struct dvb_mosaic_linkage_03 { + uint16_t original_network_id; + uint16_t transport_stream_id; + uint16_t service_id; +} __ucsi_packed; + +struct dvb_mosaic_linkage_04 { + uint16_t original_network_id; + uint16_t transport_stream_id; + uint16_t service_id; + uint16_t event_id; +} __ucsi_packed; + +/** + * Structure describing the linkage field of a dvb_mosaic_info + */ +struct dvb_mosaic_linkage { + union { + struct dvb_mosaic_linkage_01 linkage_01; + struct dvb_mosaic_linkage_02 linkage_02; + struct dvb_mosaic_linkage_03 linkage_03; + struct dvb_mosaic_linkage_04 linkage_04; + } u; +} __ucsi_packed; + +/** + * Process a dvb_mosaic_descriptor. + * + * @param d Pointer to a generic descriptor structure. + */ +static inline struct dvb_mosaic_descriptor* + dvb_mosaic_descriptor_codec(struct descriptor* d) +{ + uint8_t* buf = (uint8_t*) d + 2; + uint32_t pos = 0; + uint32_t len = d->len; + struct dvb_mosaic_descriptor * p = + (struct dvb_mosaic_descriptor *) d; + + pos += (sizeof(struct dvb_mosaic_descriptor) - 2); + + if (pos > len) + return NULL; + + while(pos < len) { + struct dvb_mosaic_info *e = + (struct dvb_mosaic_info*) (buf+pos); + struct dvb_mosaic_info_part2 *e2; + struct dvb_mosaic_linkage *linkage; + + if ((pos + sizeof(struct dvb_mosaic_info)) > len) + return NULL; + + bswap16(buf + pos); + + pos += sizeof(struct dvb_mosaic_info) + + e->elementary_cell_field_length; + + if (pos > len) + return NULL; + + e2 = (struct dvb_mosaic_info_part2*) (buf+pos); + + pos += sizeof(struct dvb_mosaic_info_part2); + + if (pos > len) + return NULL; + + linkage = (struct dvb_mosaic_linkage*) (buf+pos); + + switch(e2->cell_linkage_info) { + case 0x01: + if ((pos + sizeof(struct dvb_mosaic_linkage_01)) > len) + return NULL; + bswap16(buf+pos); + pos += sizeof(struct dvb_mosaic_linkage_01); + break; + + case 0x02: + if ((pos + sizeof(struct dvb_mosaic_linkage_02)) > len) + return NULL; + bswap16(buf+pos); + bswap16(buf+pos+2); + bswap16(buf+pos+4); + pos += sizeof(struct dvb_mosaic_linkage_02); + break; + + case 0x03: + if ((pos + sizeof(struct dvb_mosaic_linkage_03)) > len) + return NULL; + bswap16(buf+pos); + bswap16(buf+pos+2); + bswap16(buf+pos+4); + pos += sizeof(struct dvb_mosaic_linkage_03); + break; + + case 0x04: + if ((pos + sizeof(struct dvb_mosaic_linkage_04)) > len) + return NULL; + bswap16(buf+pos); + bswap16(buf+pos+2); + bswap16(buf+pos+4); + bswap16(buf+pos+6); + pos += sizeof(struct dvb_mosaic_linkage_04); + break; + } + } + + return p; +} + +/** + * Iterator over the infos field of a dvb_mosaic_descriptor. + * + * @param d dvb_mosaic_descriptor pointer. + * @param pos Variable containing a pointer to the current dvb_mosaic_info. + */ +#define dvb_mosaic_descriptor_infos_for_each(d, pos) \ + for ((pos) = dvb_mosaic_descriptor_infos_first(d); \ + (pos); \ + (pos) = dvb_mosaic_descriptor_infos_next(d, pos)) + +/** + * Iterator over the fields field of a dvb_mosaic_info. + * + * @param info dvb_mosaic_info pointer. + * @param pos Variable containing a pointer to the current dvb_mosaic_elementary_cell_field. + */ +#define dvb_mosaic_info_fields_for_each(info, pos) \ + for ((pos) = dvb_mosaic_info_fields_first(info); \ + (pos); \ + (pos) = dvb_mosaic_info_fields_next(info, pos)) + +/** + * Accessor for the second part of the dvb_mosaic_info structure. + * + * @param entry dvb_mosaic_info pointer. + * @return dvb_mosaic_info_part2 pointer. + */ +static inline struct dvb_mosaic_info_part2* + dvb_mosaic_info_part2(struct dvb_mosaic_info* entry) +{ + return (struct dvb_mosaic_info_part2*) + ((uint8_t*) entry + sizeof(struct dvb_mosaic_info) + + entry->elementary_cell_field_length); +} + +/** + * Accessor for the linkage field a dvb_mosaic_info structure. + * + * @param entry dvb_mosaic_info_part2 pointer. + * @return dvb_mosaic_linkage pointer, or NULL on error. + */ +static inline struct dvb_mosaic_linkage* + dvb_mosaic_linkage(struct dvb_mosaic_info_part2* entry) +{ + if ((entry->cell_linkage_info != 0x01) && + (entry->cell_linkage_info != 0x02) && + (entry->cell_linkage_info != 0x03) && + (entry->cell_linkage_info != 0x04)) + return NULL; + + return (struct dvb_mosaic_linkage*) + ((uint8_t*) entry + sizeof(struct dvb_mosaic_info_part2)); +} + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_mosaic_info* + dvb_mosaic_descriptor_infos_first(struct dvb_mosaic_descriptor *d) +{ + if (d->d.len == 1) + return NULL; + + return (struct dvb_mosaic_info *) + ((uint8_t*) d + sizeof(struct dvb_mosaic_descriptor)); +} + +static inline struct dvb_mosaic_info* + dvb_mosaic_descriptor_infos_next(struct dvb_mosaic_descriptor *d, + struct dvb_mosaic_info *pos) +{ + struct dvb_mosaic_info_part2* part2 = dvb_mosaic_info_part2(pos); + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_mosaic_info) + + pos->elementary_cell_field_length + + sizeof(struct dvb_mosaic_info_part2); + + if (part2->cell_linkage_info == 0x01) + next += sizeof(struct dvb_mosaic_linkage_01); + else if (part2->cell_linkage_info == 0x02) + next += sizeof(struct dvb_mosaic_linkage_02); + else if (part2->cell_linkage_info == 0x03) + next += sizeof(struct dvb_mosaic_linkage_03); + else if (part2->cell_linkage_info == 0x04) + next += sizeof(struct dvb_mosaic_linkage_04); + + if (next >= end) + return NULL; + + return (struct dvb_mosaic_info *) next; +} + +static inline struct dvb_mosaic_elementary_cell_field* + dvb_mosaic_info_fields_first(struct dvb_mosaic_info *d) +{ + if (d->elementary_cell_field_length == 0) + return NULL; + + return (struct dvb_mosaic_elementary_cell_field*) + ((uint8_t*) d + sizeof(struct dvb_mosaic_info)); +} + +static inline struct dvb_mosaic_elementary_cell_field* + dvb_mosaic_info_fields_next(struct dvb_mosaic_info *d, + struct dvb_mosaic_elementary_cell_field* pos) +{ + uint8_t *end = (uint8_t*) d + sizeof(struct dvb_mosaic_info) + + d->elementary_cell_field_length; + uint8_t *next = (uint8_t *) pos + + sizeof(struct dvb_mosaic_elementary_cell_field); + + if (next >= end) + return NULL; + + return (struct dvb_mosaic_elementary_cell_field *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/multilingual_bouquet_name_descriptor.h b/lib/libucsi/dvb/multilingual_bouquet_name_descriptor.h new file mode 100644 index 0000000..0d8deb1 --- /dev/null +++ b/lib/libucsi/dvb/multilingual_bouquet_name_descriptor.h @@ -0,0 +1,145 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_MULTILINGUAL_BOUQUET_NAME_DESCRIPTOR +#define _UCSI_DVB_MULTILINGUAL_BOUQUET_NAME_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +/** + * dvb_multilingual_bouquet_name_descriptor structure. + */ +struct dvb_multilingual_bouquet_name_descriptor { + struct descriptor d; + + /* struct dvb_multilingual_bouquet_name names[]*/ +} __ucsi_packed; + +/** + * An entry in the names field of a dvb_multilingual_bouquet_name_descriptor. + */ +struct dvb_multilingual_bouquet_name { + iso639lang_t language_code; + uint8_t bouquet_name_length; + /* uint8_t name[] */ +} __ucsi_packed; + +/** + * Process a dvb_multilingual_bouquet_name_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_multilingual_bouquet_name_descriptor pointer, or NULL on error. + */ +static inline struct dvb_multilingual_bouquet_name_descriptor* + dvb_multilingual_bouquet_name_descriptor_codec(struct descriptor* d) +{ + uint8_t* buf = (uint8_t*) d + 2; + uint32_t pos = 0; + uint32_t len = d->len; + + while(pos < len) { + struct dvb_multilingual_bouquet_name *e = + (struct dvb_multilingual_bouquet_name*) (buf+pos); + + pos += sizeof(struct dvb_multilingual_bouquet_name); + + if (pos > len) + return NULL; + + pos += e->bouquet_name_length; + + if (pos > len) + return NULL; + } + + return (struct dvb_multilingual_bouquet_name_descriptor*) d; +} + +/** + * Iterator for entries in the names field of a dvb_multilingual_bouquet_name_descriptor. + * + * @param d dvb_multilingual_bouquet_name_descriptor pointer. + * @param pos Variable containing a pointer to the current dvb_multilingual_bouquet_name. + */ +#define dvb_multilingual_bouquet_name_descriptor_names_for_each(d, pos) \ + for ((pos) = dvb_multilingual_bouquet_name_descriptor_names_first(d); \ + (pos); \ + (pos) = dvb_multilingual_bouquet_name_descriptor_names_next(d, pos)) + +/** + * Accessor for the name field of a dvb_multilingual_bouquet_name. + * + * @param e dvb_multilingual_bouquet_name pointer. + * @return Pointer to the field. + */ +static inline uint8_t * + dvb_multilingual_bouquet_name_name(struct dvb_multilingual_bouquet_name *e) +{ + return (uint8_t *) e + sizeof(struct dvb_multilingual_bouquet_name); +} + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_multilingual_bouquet_name* + dvb_multilingual_bouquet_name_descriptor_names_first(struct dvb_multilingual_bouquet_name_descriptor *d) +{ + if (d->d.len == 0) + return NULL; + + return (struct dvb_multilingual_bouquet_name *) + ((uint8_t*) d + sizeof(struct dvb_multilingual_bouquet_name_descriptor)); +} + +static inline struct dvb_multilingual_bouquet_name* + dvb_multilingual_bouquet_name_descriptor_names_next(struct dvb_multilingual_bouquet_name_descriptor *d, + struct dvb_multilingual_bouquet_name *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + + sizeof(struct dvb_multilingual_bouquet_name) + + pos->bouquet_name_length; + + if (next >= end) + return NULL; + + return (struct dvb_multilingual_bouquet_name *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/multilingual_component_descriptor.h b/lib/libucsi/dvb/multilingual_component_descriptor.h new file mode 100644 index 0000000..ab156af --- /dev/null +++ b/lib/libucsi/dvb/multilingual_component_descriptor.h @@ -0,0 +1,149 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_MULTILINGUAL_COMPONENT_DESCRIPTOR +#define _UCSI_DVB_MULTILINGUAL_COMPONENT_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +/** + * dvb_multilingual_component_descriptor structure. + */ +struct dvb_multilingual_component_descriptor { + struct descriptor d; + + uint8_t component_tag; + /* struct dvb_multilingual_component components[] */ +} __ucsi_packed; + +/** + * An entry in the components field of a dvb_multilingual_component_descriptor. + */ +struct dvb_multilingual_component { + iso639lang_t language_code; + uint8_t text_description_length; + /* uint8_t text_char[] */ +} __ucsi_packed; + +/** + * Process a dvb_multilingual_component_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_multilingual_component_descriptor pointer, or NULL on error. + */ +static inline struct dvb_multilingual_component_descriptor* + dvb_multilingual_component_descriptor_codec(struct descriptor* d) +{ + uint8_t* buf = (uint8_t*) d + 2; + uint32_t pos = sizeof(struct dvb_multilingual_component_descriptor) - 2; + uint32_t len = d->len; + + if (pos > len) + return NULL; + + while(pos < len) { + struct dvb_multilingual_component *e = + (struct dvb_multilingual_component*) (buf+pos); + + pos += sizeof(struct dvb_multilingual_component); + + if (pos > len) + return NULL; + + pos += e->text_description_length; + + if (pos > len) + return NULL; + } + + return (struct dvb_multilingual_component_descriptor*) d; +} + +/** + * Iterator for entries in the components field of a dvb_multilingual_component_descriptor. + * + * @param d Generic descriptor pointer. + * @param pos Variable containing a pointer to the current dvb_multilingual_component. + */ +#define dvb_multilingual_component_descriptor_components_for_each(d, pos) \ + for ((pos) = dvb_multilingual_component_descriptor_components_first(d); \ + (pos); \ + (pos) = dvb_multilingual_component_descriptor_components_next(d, pos)) + +/** + * Accessor for the text_char field in a dvb_multilingual_component. + * + * @param e dvb_multilingual_component pointer. + * @return Pointer to the field. + */ +static inline uint8_t * + dvb_multilingual_component_text_char(struct dvb_multilingual_component *e) +{ + return (uint8_t *) e + sizeof(struct dvb_multilingual_component); +} + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_multilingual_component* + dvb_multilingual_component_descriptor_components_first(struct dvb_multilingual_component_descriptor *d) +{ + if (d->d.len == 1) + return NULL; + + return (struct dvb_multilingual_component *) + ((uint8_t*) d + sizeof(struct dvb_multilingual_component_descriptor)); +} + +static inline struct dvb_multilingual_component* + dvb_multilingual_component_descriptor_components_next(struct dvb_multilingual_component_descriptor *d, + struct dvb_multilingual_component *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + + sizeof(struct dvb_multilingual_component) + + pos->text_description_length; + + if (next >= end) + return NULL; + + return (struct dvb_multilingual_component *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/multilingual_network_name_descriptor.h b/lib/libucsi/dvb/multilingual_network_name_descriptor.h new file mode 100644 index 0000000..1a7b8c4 --- /dev/null +++ b/lib/libucsi/dvb/multilingual_network_name_descriptor.h @@ -0,0 +1,145 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_MULTILINGUAL_NETWORK_NAME_DESCRIPTOR +#define _UCSI_DVB_MULTILINGUAL_NETWORK_NAME_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +/** + * dvb_multilingual_network_name_descriptor structure. + */ +struct dvb_multilingual_network_name_descriptor { + struct descriptor d; + + /* struct dvb_multilingual_network_name names[] */ +} __ucsi_packed; + +/** + * An entry in the names field of a dvb_multilingual_network_name_descriptor. + */ +struct dvb_multilingual_network_name { + iso639lang_t language_code; + uint8_t network_name_length; + /* uint8_t name[] */ +} __ucsi_packed; + +/** + * Process a dvb_multilingual_network_name_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_multilingual_network_name_descriptor pointer, or NULL on error. + */ +static inline struct dvb_multilingual_network_name_descriptor* + dvb_multilingual_network_name_descriptor_codec(struct descriptor* d) +{ + uint8_t* buf = (uint8_t*) d + 2; + uint32_t pos = 0; + uint32_t len = d->len; + + while(pos < len) { + struct dvb_multilingual_network_name *e = + (struct dvb_multilingual_network_name*) (buf + pos); + + pos += sizeof(struct dvb_multilingual_network_name); + + if (pos > len) + return NULL; + + pos += e->network_name_length; + + if (pos > len) + return NULL; + } + + return (struct dvb_multilingual_network_name_descriptor*) d; +} + +/** + * Iterator for entries in the names field of a dvb_multilingual_network_name_descriptor. + * + * @param d dvb_multilingual_network_name_descriptor pointer. + * @param pos Variable containing a pointer to the current dvb_multilingual_network_name. + */ +#define dvb_multilingual_network_name_descriptor_names_for_each(d, pos) \ + for ((pos) = dvb_multilingual_network_name_descriptor_names_first(d); \ + (pos); \ + (pos) = dvb_multilingual_network_name_descriptor_names_next(d, pos)) + +/** + * Accessor for the name field of a dvb_multilingual_network_name. + * + * @param e dvb_multilingual_network_name pointer. + * @return Pointer to the name field. + */ +static inline uint8_t * + dvb_multilingual_network_name_name(struct dvb_multilingual_network_name *e) +{ + return (uint8_t *) e + sizeof(struct dvb_multilingual_network_name); +} + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_multilingual_network_name* + dvb_multilingual_network_name_descriptor_names_first(struct dvb_multilingual_network_name_descriptor *d) +{ + if (d->d.len == 0) + return NULL; + + return (struct dvb_multilingual_network_name *) + ((uint8_t*) d + sizeof(struct dvb_multilingual_network_name_descriptor)); +} + +static inline struct dvb_multilingual_network_name* + dvb_multilingual_network_name_descriptor_names_next(struct dvb_multilingual_network_name_descriptor *d, + struct dvb_multilingual_network_name *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + + sizeof(struct dvb_multilingual_network_name) + + pos->network_name_length; + + if (next >= end) + return NULL; + + return (struct dvb_multilingual_network_name *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/multilingual_service_name_descriptor.h b/lib/libucsi/dvb/multilingual_service_name_descriptor.h new file mode 100644 index 0000000..31bb9c3 --- /dev/null +++ b/lib/libucsi/dvb/multilingual_service_name_descriptor.h @@ -0,0 +1,197 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_MULTILINGUAL_SERVICE_NAME_DESCRIPTOR +#define _UCSI_DVB_MULTILINGUAL_SERVICE_NAME_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +/** + * dvb_multilingual_service_name_descriptor structure. + */ +struct dvb_multilingual_service_name_descriptor { + struct descriptor d; + + /* struct dvb_multilingual_service_name names[] */ +} __ucsi_packed; + +/** + * An entry in the service_names field of a dvb_multilingual_service_name_descriptor. + */ +struct dvb_multilingual_service_name { + iso639lang_t language_code; + uint8_t service_provider_name_length; + /* uint8_t service_provider_name[] */ + /* struct dvb_multilingual_service_name_part2 part2 */ +} __ucsi_packed; + +/** + * Second part of a dvb_multilingual_service_name following the variable length + * service_provider_name. + */ +struct dvb_multilingual_service_name_part2 { + uint8_t service_name_length; + /* uint8_t service_name[] */ +} __ucsi_packed; + +/** + * Process a dvb_multilingual_service_name_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_multilingual_service_name_descriptor pointer, or NULL on error. + */ +static inline struct dvb_multilingual_service_name_descriptor* + dvb_multilingual_service_name_descriptor_codec(struct descriptor* d) +{ + uint8_t* buf = (uint8_t*) d + 2; + uint32_t pos = 0; + uint32_t len = d->len; + + while(pos < len) { + struct dvb_multilingual_service_name *e = + (struct dvb_multilingual_service_name*) (buf+pos); + struct dvb_multilingual_service_name_part2 *e2; + + pos += sizeof(struct dvb_multilingual_service_name); + + if (pos > len) + return NULL; + + pos += e->service_provider_name_length; + + if (pos > len) + return NULL; + + e2 = (struct dvb_multilingual_service_name_part2*) (buf+pos); + + pos += sizeof(struct dvb_multilingual_service_name_part2); + + if (pos > len) + return NULL; + + pos += e2->service_name_length; + + if (pos > len) + return NULL; + } + + return (struct dvb_multilingual_service_name_descriptor*) d; +} + +/** + * Iterator for entries in the service_name field of a dvb_multilingual_service_name_descriptor. + * + * @param d dvb_multilingual_service_name_descriptor pointer, + * @param pos Variable containing pointer to the current dvb_multilingual_service_name. + */ +#define dvb_multilingual_service_name_descriptor_names_for_each(d, pos) \ + for ((pos) = dvb_multilingual_service_name_descriptor_names_first(d); \ + (pos); \ + (pos) = dvb_multilingual_service_name_descriptor_names_next(d, pos)) + +/** + * Accessor for the service_provider_name field of a dvb_multilingual_service_name. + * + * @param e dvb_multilingual_service_name pointer. + * @return Pointer to the field. + */ +static inline uint8_t * + dvb_multilingual_service_name_service_provider_name(struct dvb_multilingual_service_name *e) +{ + return (uint8_t *) e + sizeof(struct dvb_multilingual_service_name); +} + +/** + * Accessor for the dvb_multilingual_service_name_part2 - second part of a + * dvb_multilingual_service_name following the service_name field. + * + * @param e dvb_multilingual_service_name Pointer. + * @return dvb_multilingual_service_name_part2 pointer. + */ +static inline struct dvb_multilingual_service_name_part2 * + dvb_multilingual_service_name_part2(struct dvb_multilingual_service_name *e) +{ + return (struct dvb_multilingual_service_name_part2 *) + ((uint8_t *) e + sizeof(struct dvb_multilingual_service_name) + + e->service_provider_name_length); +} + +/** + * Accessor for the service_name field of a dvb_multilingual_service_name_part2. + * + * @param e dvb_multilingual_service_name_part2 pointer. + * @return Pointer to the field. + */ +static inline uint8_t * + dvb_multilingual_service_name_service_name(struct dvb_multilingual_service_name_part2 *e) +{ + return (uint8_t *) e + sizeof(struct dvb_multilingual_service_name_part2); +} + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_multilingual_service_name* + dvb_multilingual_service_name_descriptor_names_first(struct dvb_multilingual_service_name_descriptor *d) +{ + if (d->d.len == 0) + return NULL; + + return (struct dvb_multilingual_service_name *) + ((uint8_t*) d + sizeof(struct dvb_multilingual_service_name_descriptor)); +} + +static inline struct dvb_multilingual_service_name* + dvb_multilingual_service_name_descriptor_names_next(struct dvb_multilingual_service_name_descriptor *d, + struct dvb_multilingual_service_name *pos) +{ + struct dvb_multilingual_service_name_part2 * part2 = + dvb_multilingual_service_name_part2(pos); + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) part2+ + sizeof(struct dvb_multilingual_service_name_part2) + + part2->service_name_length; + + if (next >= end) + return NULL; + + return (struct dvb_multilingual_service_name *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/network_name_descriptor.h b/lib/libucsi/dvb/network_name_descriptor.h new file mode 100644 index 0000000..0754597 --- /dev/null +++ b/lib/libucsi/dvb/network_name_descriptor.h @@ -0,0 +1,82 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_NETWORK_NAME_DESCRIPTOR +#define _UCSI_DVB_NETWORK_NAME_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_network_name_descriptor structure. + */ +struct dvb_network_name_descriptor { + struct descriptor d; + + /* char name[] */ +} __ucsi_packed; + +/** + * Process a dvb_network_name_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_network_name_descriptor pointer, or NULL on error. + */ +static inline struct dvb_network_name_descriptor* + dvb_network_name_descriptor_codec(struct descriptor* d) +{ + return (struct dvb_network_name_descriptor*) d; +} + +/** + * Accessor for the name field in a dvb_network_name_descriptor. + * + * @param d dvb_network_name_descriptor pointer. + * @return Pointer to the field. + */ +static inline uint8_t * + dvb_network_name_descriptor_name(struct dvb_network_name_descriptor *d) +{ + return (uint8_t *) d + sizeof(struct dvb_network_name_descriptor); +} + +/** + * Calculate the length of the name field in a dvb_network_name_descriptor. + * + * @param d dvb_network_name_descriptor pointer. + * @return Length of the field in bytes. + */ +static inline int + dvb_network_name_descriptor_name_length(struct dvb_network_name_descriptor *d) +{ + return d->d.len; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/nit_section.c b/lib/libucsi/dvb/nit_section.c new file mode 100644 index 0000000..664a0cb --- /dev/null +++ b/lib/libucsi/dvb/nit_section.c @@ -0,0 +1,78 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <libucsi/dvb/nit_section.h> + +struct dvb_nit_section *dvb_nit_section_codec(struct section_ext * ext) +{ + uint8_t * buf = (uint8_t *) ext; + struct dvb_nit_section * ret = (struct dvb_nit_section *) ext; + size_t pos = sizeof(struct section_ext); + size_t len = section_ext_length(ext); + + if (len < sizeof(struct dvb_nit_section)) + return NULL; + + bswap16(buf + pos); + pos += 2; + + if ((pos + ret->network_descriptors_length) > len) + return NULL; + + if (verify_descriptors(buf + pos, ret->network_descriptors_length)) + return NULL; + + pos += ret->network_descriptors_length; + + if ((pos + sizeof(struct dvb_nit_section_part2)) > len) + return NULL; + + bswap16(buf + pos); + pos += 2; + + while (pos < len) { + struct dvb_nit_transport *transport = + (struct dvb_nit_transport *)(buf + pos); + + if ((pos + sizeof(struct dvb_nit_transport)) > len) + return NULL; + + bswap16(buf + pos); + bswap16(buf + pos + 2); + bswap16(buf + pos + 4); + + pos += sizeof(struct dvb_nit_transport); + + if ((pos + transport->transport_descriptors_length) > len) + return NULL; + + if (verify_descriptors(buf + pos, + transport->transport_descriptors_length)) + return NULL; + + pos += transport->transport_descriptors_length; + } + + if (pos != len) + return NULL; + + return ret; +} diff --git a/lib/libucsi/dvb/nit_section.h b/lib/libucsi/dvb/nit_section.h new file mode 100644 index 0000000..77ab1a0 --- /dev/null +++ b/lib/libucsi/dvb/nit_section.h @@ -0,0 +1,207 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_NIT_SECTION_H +#define _UCSI_DVB_NIT_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/section.h> + +/** + * dvb_nit_section structure. + */ +struct dvb_nit_section { + struct section_ext head; + + EBIT2(uint16_t reserved_1 : 4; , + uint16_t network_descriptors_length :12; ); + /* struct descriptor descriptors[] */ + /* struct dvb_nit_section_part2 part2 */ +}; + +/** + * Second part of a dvb_nit_section, following the variable length descriptors field. + */ +struct dvb_nit_section_part2 { + EBIT2(uint16_t reserved_2 : 4; , + uint16_t transport_stream_loop_length :12; ); + /* struct dvb_nit_transport transports[] */ +} __ucsi_packed; + +/** + * An entry in the transports field of a dvb_nit_section_part2 + */ +struct dvb_nit_transport { + uint16_t transport_stream_id; + uint16_t original_network_id; + EBIT2(uint16_t reserved : 4; , + uint16_t transport_descriptors_length :12; ); + /* struct descriptor descriptors[] */ +} __ucsi_packed; + +/** + * Process a dvb_nit_section. + * + * @param section Generic section_ext pointer. + * @return dvb_nit_section pointer, or NULL on error. + */ +struct dvb_nit_section * dvb_nit_section_codec(struct section_ext *section); + +/** + * Accessor for the network_id field of a NIT. + * + * @param nit NIT pointer. + * @return The network_id. + */ +static inline uint16_t dvb_nit_section_network_id(struct dvb_nit_section *nit) +{ + return nit->head.table_id_ext; +} + +/** + * Iterator over the descriptors field in a dvb_nit_section. + * + * @param nit dvb_nit_section pointer. + * @param pos Variable containing a pointer to the current descriptor. + */ +#define dvb_nit_section_descriptors_for_each(nit, pos) \ + for ((pos) = dvb_nit_section_descriptors_first(nit); \ + (pos); \ + (pos) = dvb_nit_section_descriptors_next(nit, pos)) + +/** + * Accessor for a pointer to the dvb_nit_section_part2 structure. + * + * @param nit dvb_nit_section pointer. + * @return dvb_nit_section_part2 pointer. + */ +static inline struct dvb_nit_section_part2 *dvb_nit_section_part2(struct dvb_nit_section * nit) +{ + return (struct dvb_nit_section_part2 *) + ((uint8_t*) nit + sizeof(struct dvb_nit_section) + + nit->network_descriptors_length); +} + +/** + * Iterator over the transports field in a dvb_nit_section_part2. + * + * @param nit dvb_nit_section pointer. + * @param part2 dvb_nit_section_part2 pointer. + * @param pos Pointer to the current dvb_nit_transport. + */ +#define dvb_nit_section_transports_for_each(nit, part2, pos) \ + for ((pos) = dvb_nit_section_transports_first(part2); \ + (pos); \ + (pos) = dvb_nit_section_transports_next(part2, pos)) + +/** + * Iterator over the descriptors field in a dvb_nit_transport. + * + * @param transport dvb_nit_transport pointer. + * @param pos Pointer to the current descriptor. + */ +#define dvb_nit_transport_descriptors_for_each(transport, pos) \ + for ((pos) = dvb_nit_transport_descriptors_first(transport); \ + (pos); \ + (pos) = dvb_nit_transport_descriptors_next(transport, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct descriptor * + dvb_nit_section_descriptors_first(struct dvb_nit_section * nit) +{ + if (nit->network_descriptors_length == 0) + return NULL; + + return (struct descriptor *) + ((uint8_t *) nit + sizeof(struct dvb_nit_section)); +} + +static inline struct descriptor * + dvb_nit_section_descriptors_next(struct dvb_nit_section * nit, + struct descriptor* pos) +{ + return next_descriptor((uint8_t*) nit + sizeof(struct dvb_nit_section), + nit->network_descriptors_length, + pos); +} + +static inline struct dvb_nit_transport * + dvb_nit_section_transports_first(struct dvb_nit_section_part2 *part2) +{ + if (part2->transport_stream_loop_length == 0) + return NULL; + + return (struct dvb_nit_transport *) + ((uint8_t *)part2 + sizeof(struct dvb_nit_section_part2)); +} + +static inline struct dvb_nit_transport * + dvb_nit_section_transports_next(struct dvb_nit_section_part2 *part2, + struct dvb_nit_transport *pos) +{ + uint8_t *end = (uint8_t*) part2 + sizeof(struct dvb_nit_section_part2) + + part2->transport_stream_loop_length; + uint8_t *next = (uint8_t*) pos + sizeof(struct dvb_nit_transport) + + pos->transport_descriptors_length; + + if (next >= end) + return NULL; + + return (struct dvb_nit_transport *) next; +} + +static inline struct descriptor * + dvb_nit_transport_descriptors_first(struct dvb_nit_transport *t) +{ + if (t->transport_descriptors_length == 0) + return NULL; + + return (struct descriptor *) + ((uint8_t*) t + sizeof(struct dvb_nit_transport)); +} + +static inline struct descriptor * + dvb_nit_transport_descriptors_next(struct dvb_nit_transport *t, + struct descriptor* pos) +{ + return next_descriptor((uint8_t*) t + sizeof(struct dvb_nit_transport), + t->transport_descriptors_length, + pos); +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/nvod_reference_descriptor.h b/lib/libucsi/dvb/nvod_reference_descriptor.h new file mode 100644 index 0000000..6180514 --- /dev/null +++ b/lib/libucsi/dvb/nvod_reference_descriptor.h @@ -0,0 +1,125 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_NVOD_REFERENCE_DESCRIPTOR +#define _UCSI_DVB_NVOD_REFERENCE_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_nvod_reference_descriptor structure. + */ +struct dvb_nvod_reference_descriptor { + struct descriptor d; + + /* struct dvb_nvod_reference references[] */ +} __ucsi_packed; + +/** + * An entry in the references field of a dvb_nvod_reference_descriptor. + */ +struct dvb_nvod_reference { + uint16_t transport_stream_id; + uint16_t original_network_id; + uint16_t service_id; +} __ucsi_packed; + +/** + * Process a dvb_nvod_reference_descriptor. + * + * @param d Pointer to a generic descriptor structure pointer. + * @return dvb_nvod_reference_descriptor pointer, or NULL on error. + */ +static inline struct dvb_nvod_reference_descriptor* + dvb_nvod_reference_descriptor_codec(struct descriptor* d) +{ + uint32_t pos = 0; + uint8_t* buf = (uint8_t*) d + 2; + uint32_t len = d->len; + + if (len % sizeof(struct dvb_nvod_reference)) + return NULL; + + while(pos < len) { + bswap16(buf+pos); + bswap16(buf+pos+2); + bswap16(buf+pos+4); + pos += sizeof(struct dvb_nvod_reference); + } + + return (struct dvb_nvod_reference_descriptor*) d; +} + +/** + * Iterator over the references field in a dvb_nvod_reference_descriptor. + * + * @param d dvb_nvod_reference_descriptor pointer. + * @param pos Variable containing a pointer to the current dvb_nvod_reference. + */ +#define dvb_nvod_reference_descriptor_references_for_each(d, pos) \ + for ((pos) = dvb_nvod_reference_descriptor_references_first(d); \ + (pos); \ + (pos) = dvb_nvod_reference_descriptor_references_next(d, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_nvod_reference* + dvb_nvod_reference_descriptor_references_first(struct dvb_nvod_reference_descriptor *d) +{ + if (d->d.len == 0) + return NULL; + + return (struct dvb_nvod_reference *) + ((uint8_t*) d + sizeof(struct dvb_nvod_reference_descriptor)); +} + +static inline struct dvb_nvod_reference* + dvb_nvod_reference_descriptor_references_next(struct dvb_nvod_reference_descriptor *d, + struct dvb_nvod_reference *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_nvod_reference); + + if (next >= end) + return NULL; + + return (struct dvb_nvod_reference *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/parental_rating_descriptor.h b/lib/libucsi/dvb/parental_rating_descriptor.h new file mode 100644 index 0000000..72ecd0a --- /dev/null +++ b/lib/libucsi/dvb/parental_rating_descriptor.h @@ -0,0 +1,135 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_PARENTAL_RATING_DESCRIPTOR +#define _UCSI_DVB_PARENTAL_RATING_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +/** + * Defined values for the rating field. + */ +enum { + DVB_PARENTAL_RATING_MIN_3YEARS = 0x01, + DVB_PARENTAL_RATING_MIN_4YEARS = 0x02, + DVB_PARENTAL_RATING_MIN_5YEARS = 0x03, + DVB_PARENTAL_RATING_MIN_6YEARS = 0x04, + DVB_PARENTAL_RATING_MIN_7YEARS = 0x05, + DVB_PARENTAL_RATING_MIN_8YEARS = 0x06, + DVB_PARENTAL_RATING_MIN_9YEARS = 0x07, + DVB_PARENTAL_RATING_MIN_10YEARS = 0x08, + DVB_PARENTAL_RATING_MIN_11YEARS = 0x09, + DVB_PARENTAL_RATING_MIN_12YEARS = 0x0a, + DVB_PARENTAL_RATING_MIN_13YEARS = 0x0b, + DVB_PARENTAL_RATING_MIN_14YEARS = 0x0c, + DVB_PARENTAL_RATING_MIN_15YEARS = 0x0d, + DVB_PARENTAL_RATING_MIN_16YEARS = 0x0e, + DVB_PARENTAL_RATING_MIN_17YEARS = 0x0f, +}; + +/** + * dvb_parental_rating_descriptor structure. + */ +struct dvb_parental_rating_descriptor { + struct descriptor d; + + /* struct dvb_parental_rating ratings[] */ +} __ucsi_packed; + +/** + * An entry in the ratings field of a dvb_parental_rating_descriptor. + */ +struct dvb_parental_rating { + iso639country_t country_code; + uint8_t rating; +} __ucsi_packed; + +/** + * Process a dvb_parental_rating_descriptor. + * + * @param d Generic descriptor structure pointer. + * @return dvb_parental_rating_descriptor pointer, or NULL on error. + */ +static inline struct dvb_parental_rating_descriptor* + dvb_parental_rating_descriptor_codec(struct descriptor* d) +{ + if (d->len % sizeof(struct dvb_parental_rating)) + return NULL; + + return (struct dvb_parental_rating_descriptor*) d; +} + +/** + * Iterator for entries in the ratings field of a dvb_parental_rating_descriptor. + * + * @param d dvb_parental_rating_descriptor pointer. + * @param pos Variable containing a pointer to the current dvb_parental_rating. + */ +#define dvb_parental_rating_descriptor_ratings_for_each(d, pos) \ + for ((pos) = dvb_parental_rating_descriptor_ratings_first(d); \ + (pos); \ + (pos) = dvb_parental_rating_descriptor_ratings_next(d, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_parental_rating* + dvb_parental_rating_descriptor_ratings_first(struct dvb_parental_rating_descriptor *d) +{ + if (d->d.len == 0) + return NULL; + + return (struct dvb_parental_rating *) + ((uint8_t*) d + sizeof(struct dvb_parental_rating_descriptor)); +} + +static inline struct dvb_parental_rating* + dvb_parental_rating_descriptor_ratings_next(struct dvb_parental_rating_descriptor *d, + struct dvb_parental_rating *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_parental_rating); + + if (next >= end) + return NULL; + + return (struct dvb_parental_rating *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/partial_transport_stream_descriptor.h b/lib/libucsi/dvb/partial_transport_stream_descriptor.h new file mode 100644 index 0000000..6e3aa96 --- /dev/null +++ b/lib/libucsi/dvb/partial_transport_stream_descriptor.h @@ -0,0 +1,68 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_PARTIAL_TRANSPORT_STREAM_DESCRIPTOR +#define _UCSI_DVB_PARTIAL_TRANSPORT_STREAM_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_partial_transport_stream_descriptor structure. + */ +struct dvb_partial_transport_stream_descriptor { + struct descriptor d; + + EBIT6(uint64_t reserved : 2; , + uint64_t peak_rate :22; , + uint64_t reserved_2 : 2; , + uint64_t minimum_overall_smoothing_rate :22; , + uint64_t reserved_3 : 2; , + uint64_t maximum_overall_smoothing_rate :14; ); +} __ucsi_packed; + +/** + * Process a dvb_partial_transport_stream_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_partial_transport_stream_descriptor pointer, or NULL on error. + */ +static inline struct dvb_partial_transport_stream_descriptor* + dvb_partial_transport_stream_descriptor_codec(struct descriptor* d) +{ + if (d->len != (sizeof(struct dvb_partial_transport_stream_descriptor) - 2)) + return NULL; + + bswap64((uint8_t*) d + 2); + + return (struct dvb_partial_transport_stream_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/pdc_descriptor.h b/lib/libucsi/dvb/pdc_descriptor.h new file mode 100644 index 0000000..68190be --- /dev/null +++ b/lib/libucsi/dvb/pdc_descriptor.h @@ -0,0 +1,64 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_PDC_DESCRIPTOR +#define _UCSI_DVB_PDC_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_pdc_descriptor structure. + */ +struct dvb_pdc_descriptor { + struct descriptor d; + + EBIT2(uint32_t reserved : 4; , + uint32_t programme_id_label :20; ); +} __ucsi_packed; + +/** + * Process a dvb_pdc_descriptor. + * + * @param d Pointer to a generic descriptor structure. + * @return dvb_pdc_descriptor pointer, or NULL on error. + */ +static inline struct dvb_pdc_descriptor* + dvb_pdc_descriptor_codec(struct descriptor* d) +{ + if (d->len != (sizeof(struct dvb_pdc_descriptor) - 2)) + return NULL; + + bswap24((uint8_t*) d + 2); + + return (struct dvb_pdc_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/private_data_specifier_descriptor.h b/lib/libucsi/dvb/private_data_specifier_descriptor.h new file mode 100644 index 0000000..f4cc03c --- /dev/null +++ b/lib/libucsi/dvb/private_data_specifier_descriptor.h @@ -0,0 +1,63 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_PRIVATE_DATA_SPECIFIER_DESCRIPTOR +#define _UCSI_DVB_PRIVATE_DATA_SPECIFIER_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_private_data_specifier_descriptor structure. + */ +struct dvb_private_data_specifier_descriptor { + struct descriptor d; + + uint32_t private_data_specifier; +} __ucsi_packed; + +/** + * Process a dvb_private_data_specifier_descriptor. + * + * @param d Generic descriptor structure. + * @return dvb_private_data_specifier_descriptor pointer, or NULL on error. + */ +static inline struct dvb_private_data_specifier_descriptor* + dvb_private_data_specifier_descriptor_codec(struct descriptor* d) +{ + if (d->len != (sizeof(struct dvb_private_data_specifier_descriptor) - 2)) + return NULL; + + bswap32((uint8_t*) d + 2); + + return (struct dvb_private_data_specifier_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/related_content_descriptor.h b/lib/libucsi/dvb/related_content_descriptor.h new file mode 100644 index 0000000..fd6a358 --- /dev/null +++ b/lib/libucsi/dvb/related_content_descriptor.h @@ -0,0 +1,56 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_RELATED_CONTENT_DESCRIPTOR +#define _UCSI_DVB_RELATED_CONTENT_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_related_content_descriptor structure. + */ +struct dvb_related_content_descriptor { + struct descriptor d; +} __ucsi_packed; + +/** + * Process a dvb_related_content_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_related_content_descriptor pointer, or NULL on error. + */ +static inline struct dvb_related_content_descriptor* + dvb_related_content_descriptor_codec(struct descriptor* d) +{ + return (struct dvb_related_content_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/rnt_rar_over_dvb_stream_descriptor.h b/lib/libucsi/dvb/rnt_rar_over_dvb_stream_descriptor.h new file mode 100644 index 0000000..ba42d12 --- /dev/null +++ b/lib/libucsi/dvb/rnt_rar_over_dvb_stream_descriptor.h @@ -0,0 +1,110 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_RNT_RAR_OVER_DVB_STREAM_DESCRIPTOR +#define _UCSI_DVB_RNT_RAR_OVER_DVB_STREAM_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_rnt_rar_over_dvb_stream_descriptor structure. + */ +struct dvb_rnt_rar_over_dvb_stream_descriptor { + struct descriptor d; + + dvbdate_t first_valid_date; + dvbdate_t last_valid_date; + EBIT3(uint8_t weighting : 6; , + uint8_t complete_flag : 1; , + uint8_t scheduled_flag : 1; ); + uint16_t transport_stream_id; + uint16_t original_network_id; + uint16_t service_id; + uint8_t component_tag; + /* struct dvb_rnt_rar_over_dvb_stream_descriptor_scheduled_info scheduled_info */ +} __ucsi_packed; + +/** + * The scheduled_info field of a dvb_rnt_rar_over_dvb_stream_descriptor (only appears + * if scheduled_flag = 1). + */ +struct dvb_rnt_rar_over_dvb_stream_descriptor_scheduled_info { + dvbdate_t download_start_time; + uint8_t download_period_duration; + uint8_t download_cycle_time; +} __ucsi_packed; + +/** + * Process a dvb_rnt_rar_over_dvb_stream_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_rnt_rar_over_dvb_stream_descriptor pointer, or NULL on error. + */ +static inline struct dvb_rnt_rar_over_dvb_stream_descriptor* + dvb_rnt_rar_over_dvb_stream_descriptor_codec(struct descriptor* d) +{ + uint8_t *buf = (uint8_t*) d; + uint32_t len = d->len + 2; + struct dvb_rnt_rar_over_dvb_stream_descriptor *ret = + (struct dvb_rnt_rar_over_dvb_stream_descriptor *) buf; + + if (len < sizeof(struct dvb_rnt_rar_over_dvb_stream_descriptor)) + return NULL; + + bswap16(buf + 13); + bswap16(buf + 15); + bswap16(buf + 17); + + if (ret->scheduled_flag == 1) { + if (len < (sizeof(struct dvb_rnt_rar_over_dvb_stream_descriptor)+ + sizeof(struct dvb_rnt_rar_over_dvb_stream_descriptor_scheduled_info))) + return NULL; + } + + return ret; +} + +/** + * Accessor for the scheduled_info field of a dvb_rnt_rar_over_dvb_stream_descriptor. + * + * @param d dvb_rnt_rar_over_dvb_stream_descriptor pointer. + * @return Pointer, or NULL on error. + */ +static inline struct dvb_rnt_rar_over_dvb_stream_descriptor_scheduled_info* + dvb_rnt_rar_over_dvb_stream_descriptor_scheduled_info(struct dvb_rnt_rar_over_dvb_stream_descriptor *d) +{ + if (d->scheduled_flag != 1) + return NULL; + return (struct dvb_rnt_rar_over_dvb_stream_descriptor_scheduled_info*) + ((uint8_t*) d + sizeof(struct dvb_rnt_rar_over_dvb_stream_descriptor)); +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/rnt_rar_over_ip_descriptor.h b/lib/libucsi/dvb/rnt_rar_over_ip_descriptor.h new file mode 100644 index 0000000..b1f2da4 --- /dev/null +++ b/lib/libucsi/dvb/rnt_rar_over_ip_descriptor.h @@ -0,0 +1,87 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_RNT_RAR_OVER_IP_DESCRIPTOR +#define _UCSI_DVB_RNT_RAR_OVER_IP_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_rnt_rar_over_ip_descriptor structure. + */ +struct dvb_rnt_rar_over_ip_descriptor { + struct descriptor d; + + dvbdate_t first_valid_date; + dvbdate_t last_valid_date; + EBIT3(uint8_t weighting : 6; , + uint8_t complete_flag : 1; , + uint8_t reserved : 1; ); + uint8_t url_length; + /* uint8_t url[] */ +} __ucsi_packed; + +/** + * Process a dvb_rnt_rar_over_ip_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_rnt_rar_over_ip_descriptor pointer, or NULL on error. + */ +static inline struct dvb_rnt_rar_over_ip_descriptor* + dvb_rnt_rar_over_ip_descriptor_codec(struct descriptor* d) +{ + uint8_t *buf = (uint8_t*) d; + uint32_t len = d->len + 2; + struct dvb_rnt_rar_over_ip_descriptor *ret = + (struct dvb_rnt_rar_over_ip_descriptor *) buf; + + if (len < sizeof(struct dvb_rnt_rar_over_ip_descriptor)) + return NULL; + if (len < (sizeof(struct dvb_rnt_rar_over_ip_descriptor) + buf[13])) + return NULL; + + return ret; +} + +/** + * Accessor for the url field of a dvb_rnt_rar_over_ip_descriptor. + * + * @param d dvb_rnt_rar_over_ip_descriptor pointer. + * @return Pointer. + */ +static inline uint8_t* + dvb_rnt_rar_over_ip_descriptor_url(struct dvb_rnt_rar_over_ip_descriptor *d) +{ + return (uint8_t*) + ((uint8_t*) d + sizeof(struct dvb_rnt_rar_over_ip_descriptor)); +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/rnt_rnt_scan_descriptor.h b/lib/libucsi/dvb/rnt_rnt_scan_descriptor.h new file mode 100644 index 0000000..cb74f75 --- /dev/null +++ b/lib/libucsi/dvb/rnt_rnt_scan_descriptor.h @@ -0,0 +1,125 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_RNT_RNT_SCAN_DESCRIPTOR +#define _UCSI_DVB_RNT_RNT_SCAN_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +/** + * dvb_rnt_rnt_scan_descriptor structure. + */ +struct dvb_rnt_rnt_scan_descriptor { + struct descriptor d; + + /* struct dvb_rnt_rnt_scan_entry entries[] */ +} __ucsi_packed; + +/** + * An entry in the entries field of a dvb_rnt_rnt_scan_descriptor. + */ +struct dvb_rnt_rnt_scan_entry { + uint16_t transport_stream_id; + uint16_t original_network_id; + uint8_t scan_weighting; +} __ucsi_packed; + +/** + * Process a dvb_rnt_rnt_scan_descriptor. + * + * @param d Generic descriptor. + * @return dvb_rnt_rnt_scan_descriptor pointer, or NULL on error. + */ +static inline struct dvb_rnt_rnt_scan_descriptor* + dvb_rnt_rnt_scan_descriptor_codec(struct descriptor* d) +{ + uint8_t *buf = (uint8_t*) d; + uint32_t len = d->len +2; + uint32_t pos = 2; + + if ((len-2) % sizeof(struct dvb_rnt_rnt_scan_entry)) + return NULL; + + while(pos < len) { + bswap16(buf+pos); + bswap16(buf+pos+2); + pos += sizeof(struct dvb_rnt_rnt_scan_entry); + } + + return (struct dvb_rnt_rnt_scan_descriptor*) d; +} + +/** + * Iterator for entries field of a dvb_rnt_rnt_scan_descriptor. + * + * @param d dvb_rnt_rnt_scan_descriptor pointer. + * @param pos Variable holding a pointer to the current dvb_rnt_rnt_scan_entry. + */ +#define dvb_rnt_rnt_scan_descriptor_entries_for_each(d, pos) \ + for ((pos) = dvb_rnt_rnt_scan_descriptor_entries_first(d); \ + (pos); \ + (pos) = dvb_rnt_rnt_scan_descriptor_entries_next(d, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_rnt_rnt_scan_entry* + dvb_rnt_rnt_scan_descriptor_entries_first(struct dvb_rnt_rnt_scan_descriptor *d) +{ + if (d->d.len == 0) + return NULL; + + return (struct dvb_rnt_rnt_scan_entry *) + ((uint8_t*) d + sizeof(struct dvb_rnt_rnt_scan_descriptor)); +} + +static inline struct dvb_rnt_rnt_scan_entry* + dvb_rnt_rnt_scan_descriptor_entries_next(struct dvb_rnt_rnt_scan_descriptor *d, + struct dvb_rnt_rnt_scan_entry *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_rnt_rnt_scan_entry); + + if (next >= end) + return NULL; + + return (struct dvb_rnt_rnt_scan_entry *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/rst_section.c b/lib/libucsi/dvb/rst_section.c new file mode 100644 index 0000000..259d2b0 --- /dev/null +++ b/lib/libucsi/dvb/rst_section.c @@ -0,0 +1,47 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <libucsi/dvb/rst_section.h> + +struct dvb_rst_section * dvb_rst_section_codec(struct section *section) +{ + uint8_t * buf = (uint8_t *) section; + size_t pos = sizeof(struct section); + size_t len = section_length(section); + struct dvb_rst_section * ret = (struct dvb_rst_section *) section; + + while (pos < len) { + if ((pos + sizeof(struct dvb_rst_status)) > len) + return NULL; + + bswap16(buf + pos); + bswap16(buf + pos + 2); + bswap16(buf + pos + 4); + bswap16(buf + pos + 6); + + pos += sizeof(struct dvb_rst_status); + } + + if (pos != len) + return NULL; + + return ret; +} diff --git a/lib/libucsi/dvb/rst_section.h b/lib/libucsi/dvb/rst_section.h new file mode 100644 index 0000000..4b3360b --- /dev/null +++ b/lib/libucsi/dvb/rst_section.h @@ -0,0 +1,110 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_RST_SECTION_H +#define _UCSI_DVB_RST_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/section.h> + +/** + * dvb_rst_section structure. + */ +struct dvb_rst_section { + struct section head; + + /* struct dvb_rst_status statuses[] */ +}; + +/** + * An entry in the statuses field of a dvb_rst_section structure. + */ +struct dvb_rst_status { + uint16_t transport_stream_id; + uint16_t original_network_id; + uint16_t service_id; + uint16_t event_id; + EBIT2(uint8_t reserved : 5; , + uint8_t running_status : 3; ); +}; + +/** + * Process a dvb_rst_section. + * + * @param section Pointer to a generic section strcuture. + * @return dvb_rst_section pointer, or NULL on error. + */ +struct dvb_rst_section *dvb_rst_section_codec(struct section *section); + +/** + * Iterator for entries in the statuses field of a dvb_rst_section. + * + * @param rst dvb_rst_section pointer. + * @param pos Variable containing a pointer to the current dvb_rst_status. + */ +#define dvb_rst_section_statuses_for_each(rst, pos) \ + for ((pos) = dvb_rst_section_statuses_first(rst); \ + (pos); \ + (pos) = dvb_rst_section_statuses_next(rst, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_rst_status * + dvb_rst_section_statuses_first(struct dvb_rst_section *rst) +{ + size_t pos = sizeof(struct dvb_rst_section); + + if (pos >= section_length(&rst->head)) + return NULL; + + return (struct dvb_rst_status*) ((uint8_t *) rst + pos); +} + +static inline struct dvb_rst_status * + dvb_rst_section_statuses_next(struct dvb_rst_section * rst, + struct dvb_rst_status * pos) +{ + uint8_t *end = (uint8_t*) rst + section_length(&rst->head); + uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_rst_status); + + if (next >= end) + return NULL; + + return (struct dvb_rst_status *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/s2_satellite_delivery_descriptor.h b/lib/libucsi/dvb/s2_satellite_delivery_descriptor.h new file mode 100644 index 0000000..8f9fea8 --- /dev/null +++ b/lib/libucsi/dvb/s2_satellite_delivery_descriptor.h @@ -0,0 +1,116 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_S2_SATELLITE_DELIVERY_DESCRIPTOR +#define _UCSI_DVB_S2_SATELLITE_DELIVERY_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_s2_satellite_delivery_descriptor structure. + */ +struct dvb_s2_satellite_delivery_descriptor { + struct descriptor d; + + EBIT4(uint8_t scrambling_sequence_selector : 1; , + uint8_t multiple_input_stream : 1; , + uint8_t backwards_compatability : 1; , + uint8_t reserved : 5; ); + /* uint32_t scrambling_sequence_index if scrambling_sequence_selector = 1 */ + /* uint8_t input_stream_id if multiple_input_stream = 1 */ +} __ucsi_packed; + +/** + * Process a dvb_s2_satellite_delivery_descriptor. + * + * @param d Pointer to a generic descriptor structure. + * @return dvb_s2_satellite_delivery_descriptor pointer, or NULL on error. + */ +static inline struct dvb_s2_satellite_delivery_descriptor* + dvb_s2_satellite_delivery_descriptor_codec(struct descriptor* d) +{ + struct dvb_s2_satellite_delivery_descriptor *s2 = + (struct dvb_s2_satellite_delivery_descriptor*) d; + + if (d->len < (sizeof(struct dvb_s2_satellite_delivery_descriptor) - 2)) + return NULL; + + int len = sizeof(struct dvb_s2_satellite_delivery_descriptor); + if (s2->scrambling_sequence_selector) { + len += 3; + } + if (s2->multiple_input_stream) { + len += 1; + } + + if (d->len < len) + return NULL; + + return s2; +} + +/** + * Accessor for the scrambling_sequence_index field of a dvb_s2_satellite_delivery_descriptor. + * + * @param s2 dvb_s2_satellite_delivery_descriptor pointer. + * @return The scrambling_sequence_index. + */ +static inline uint32_t dvb_s2_satellite_delivery_descriptor_scrambling_sequence_index(struct dvb_s2_satellite_delivery_descriptor *s2) +{ + uint8_t *tmp = (uint8_t*) s2; + + if (s2->scrambling_sequence_selector) { + return ((tmp[4] & 0x03) << 16) | (tmp[5] << 8) | tmp[6]; + } + return 0; +} + +/** + * Accessor for the input_stream_id field of a dvb_s2_satellite_delivery_descriptor. + * + * @param s2 dvb_s2_satellite_delivery_descriptor pointer. + * @return The input_stream_id. + */ +static inline uint8_t dvb_s2_satellite_delivery_descriptor_input_stream_id(struct dvb_s2_satellite_delivery_descriptor *s2) +{ + uint8_t *tmp = (uint8_t*) s2; + + if (!s2->multiple_input_stream) + return 0; + + int off = 3; + if (s2->scrambling_sequence_selector) { + off += 3; + } + return tmp[off]; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/satellite_delivery_descriptor.h b/lib/libucsi/dvb/satellite_delivery_descriptor.h new file mode 100644 index 0000000..b93d052 --- /dev/null +++ b/lib/libucsi/dvb/satellite_delivery_descriptor.h @@ -0,0 +1,73 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_SATELLITE_DELIVERY_DESCRIPTOR +#define _UCSI_DVB_SATELLITE_DELIVERY_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_satellite_delivery_descriptor structure. + */ +struct dvb_satellite_delivery_descriptor { + struct descriptor d; + + uint32_t frequency; // BCD, units 10kHz + uint16_t orbital_position; + EBIT5(uint8_t west_east_flag : 1; , + uint8_t polarization : 2; , + uint8_t roll_off : 2; , + uint8_t modulation_system : 1; , + uint8_t modulation_type : 2; ); + EBIT2(uint32_t symbol_rate : 28; , // BCD, units 100Hz + uint32_t fec_inner : 4; ); +} __ucsi_packed; + +/** + * Process a dvb_satellite_delivery_descriptor. + * + * @param d Pointer to a generic descriptor structure. + * @return dvb_satellite_delivery_descriptor pointer, or NULL on error. + */ +static inline struct dvb_satellite_delivery_descriptor* + dvb_satellite_delivery_descriptor_codec(struct descriptor* d) +{ + if (d->len < (sizeof(struct dvb_satellite_delivery_descriptor) - 2)) + return NULL; + + bswap32((uint8_t*) d + 2); + bswap16((uint8_t*) d + 6); + bswap32((uint8_t*) d + 9); + + return (struct dvb_satellite_delivery_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/scrambling_descriptor.h b/lib/libucsi/dvb/scrambling_descriptor.h new file mode 100644 index 0000000..4669bc8 --- /dev/null +++ b/lib/libucsi/dvb/scrambling_descriptor.h @@ -0,0 +1,61 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_SCRAMBLING_DESCRIPTOR +#define _UCSI_DVB_SCRAMBLING_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_scrambling_descriptor structure. + */ +struct dvb_scrambling_descriptor { + struct descriptor d; + + uint8_t scrambling_mode; +} __ucsi_packed; + +/** + * Process a dvb_scrambling_descriptor. + * + * @param d Generic descriptor structure. + * @return Pointer to dvb_scrambling_descriptor, or NULL on error. + */ +static inline struct dvb_scrambling_descriptor* + dvb_scrambling_descriptor_codec(struct descriptor* d) +{ + if (d->len != (sizeof(struct dvb_scrambling_descriptor) - 2)) + return NULL; + + return (struct dvb_scrambling_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/sdt_section.c b/lib/libucsi/dvb/sdt_section.c new file mode 100644 index 0000000..4c7824c --- /dev/null +++ b/lib/libucsi/dvb/sdt_section.c @@ -0,0 +1,60 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <libucsi/dvb/sdt_section.h> + +struct dvb_sdt_section * dvb_sdt_section_codec(struct section_ext * ext) +{ + uint8_t * buf = (uint8_t *) ext; + size_t pos = sizeof(struct section_ext); + size_t len = section_ext_length(ext); + + if (len < sizeof(struct dvb_sdt_section)) + return NULL; + + bswap16(buf + pos); + pos += 3; + + while (pos < len) { + struct dvb_sdt_service * service = + (struct dvb_sdt_service *)(buf + pos); + + if ((pos + sizeof(struct dvb_sdt_service)) > len) + return NULL; + + bswap16(buf + pos); + bswap16(buf + pos + 3); + pos += sizeof(struct dvb_sdt_service); + + if ((pos + service->descriptors_loop_length) > len) + return NULL; + + if (verify_descriptors(buf + pos, service->descriptors_loop_length)) + return NULL; + + pos += service->descriptors_loop_length; + } + + if (pos != len) + return NULL; + + return (struct dvb_sdt_section *) ext; +} diff --git a/lib/libucsi/dvb/sdt_section.h b/lib/libucsi/dvb/sdt_section.h new file mode 100644 index 0000000..03a8569 --- /dev/null +++ b/lib/libucsi/dvb/sdt_section.h @@ -0,0 +1,157 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_SDT_SECTION_H +#define _UCSI_DVB_SDT_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/section.h> + +/** + * dvb_sdt_section structure. + */ +struct dvb_sdt_section { + struct section_ext head; + + uint16_t original_network_id; + uint8_t reserved; + /* struct dvb_sdt_service services[] */ +} __ucsi_packed; + +/** + * An entry in the services field of a dvb_sdt_section. + */ +struct dvb_sdt_service { + uint16_t service_id; + EBIT3(uint8_t reserved : 6; , + uint8_t eit_schedule_flag : 1; , + uint8_t eit_present_following_flag : 1; ); + EBIT3(uint16_t running_status : 3; , + uint16_t free_ca_mode : 1; , + uint16_t descriptors_loop_length :12; ); + /* struct descriptor descriptors[] */ +} __ucsi_packed; + +/** + * Process a dvb_sdt_section. + * + * @param section Pointer to a generic section_ext structure. + * @return dvb_sdt_section pointer, or NULL on error. + */ +struct dvb_sdt_section * dvb_sdt_section_codec(struct section_ext *section); + +/** + * Accessor for the transport_stream_id field of an SDT. + * + * @param sdt SDT pointer. + * @return The transport_stream_id. + */ +static inline uint16_t dvb_sdt_section_transport_stream_id(struct dvb_sdt_section *sdt) +{ + return sdt->head.table_id_ext; +} + +/** + * Iterator for the services field in a dvb_sdt_section. + * + * @param sdt dvb_sdt_section pointer. + * @param pos Variable containing a pointer to the current dvb_sdt_service. + */ +#define dvb_sdt_section_services_for_each(sdt, pos) \ + for ((pos) = dvb_sdt_section_services_first(sdt); \ + (pos); \ + (pos) = dvb_sdt_section_services_next(sdt, pos)) + +/** + * Iterator for the descriptors field in a dvb_sdt_service. + * + * @param service dvb_sdt_service pointer. + * @param pos Variable containing a pointer to the current descriptor. + */ +#define dvb_sdt_service_descriptors_for_each(service, pos) \ + for ((pos) = dvb_sdt_service_descriptors_first(service); \ + (pos); \ + (pos) = dvb_sdt_service_descriptors_next(service, pos)) + + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_sdt_service * + dvb_sdt_section_services_first(struct dvb_sdt_section * sdt) +{ + size_t pos = sizeof(struct dvb_sdt_section); + + if (pos >= section_ext_length(&sdt->head)) + return NULL; + + return (struct dvb_sdt_service*) ((uint8_t *) sdt + pos); +} + +static inline struct dvb_sdt_service * + dvb_sdt_section_services_next(struct dvb_sdt_section * sdt, + struct dvb_sdt_service * pos) +{ + uint8_t *end = (uint8_t*) sdt + section_ext_length(&sdt->head); + uint8_t *next = (uint8_t*) pos + sizeof(struct dvb_sdt_service) + + pos->descriptors_loop_length; + + if (next >= end) + return NULL; + + return (struct dvb_sdt_service *) next; +} + +static inline struct descriptor * + dvb_sdt_service_descriptors_first(struct dvb_sdt_service *svc) +{ + if (svc->descriptors_loop_length == 0) + return NULL; + + return (struct descriptor *) + ((uint8_t*) svc + sizeof(struct dvb_sdt_service)); +} + +static inline struct descriptor * + dvb_sdt_service_descriptors_next(struct dvb_sdt_service *svc, + struct descriptor* pos) +{ + return next_descriptor((uint8_t*) svc + sizeof(struct dvb_sdt_service), + svc->descriptors_loop_length, + pos); +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/section.h b/lib/libucsi/dvb/section.h new file mode 100644 index 0000000..8488d71 --- /dev/null +++ b/lib/libucsi/dvb/section.h @@ -0,0 +1,107 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_SECTION_H +#define _UCSI_DVB_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/dvb/bat_section.h> +#include <libucsi/dvb/dit_section.h> +#include <libucsi/dvb/eit_section.h> +#include <libucsi/dvb/nit_section.h> +#include <libucsi/dvb/rst_section.h> +#include <libucsi/dvb/sdt_section.h> +#include <libucsi/dvb/sit_section.h> +#include <libucsi/dvb/st_section.h> +#include <libucsi/dvb/tdt_section.h> +#include <libucsi/dvb/tot_section.h> +#include <libucsi/dvb/tva_container_section.h> +#include <libucsi/dvb/int_section.h> + +/** + * The following are not implemented just now. + */ +/* +#include <libucsi/dvb/tva_related_content_section.h> +#include <libucsi/dvb/tva_content_identifier_section.h> +#include <libucsi/dvb/tva_resolution_provider_notification_section.h> +#include <libucsi/dvb/ait_section.h> +#include <libucsi/dvb/cit_section.h> +#include <libucsi/dvb/rct_section.h> +#include <libucsi/dvb/rnt_section.h> +*/ + +#define TRANSPORT_NIT_PID 0x10 +#define TRANSPORT_SDT_PID 0x11 +#define TRANSPORT_BAT_PID 0x11 +#define TRANSPORT_EIT_PID 0x12 +#define TRANSPORT_CIT_PID 0x12 +#define TRANSPORT_RST_PID 0x13 +#define TRANSPORT_TDT_PID 0x14 +#define TRANSPORT_TOT_PID 0x14 +#define TRANSPORT_RNT_PID 0x16 +#define TRANSPORT_DIT_PID 0x1e +#define TRANSPORT_SIT_PID 0x1f + +/** + * Enumeration of DVB section tags. + */ +enum dvb_section_tag { + stag_dvb_network_information_actual = 0x40, + stag_dvb_network_information_other = 0x41, + + stag_dvb_service_description_actual = 0x42, + stag_dvb_service_description_other = 0x46, + + stag_dvb_bouquet_association = 0x4a, + stag_dvb_update_notification = 0x4b, /* same syntax as IP_MAC */ + stag_dvb_ip_mac_notification = 0x4c, + + stag_dvb_event_information_nownext_actual = 0x4e, + stag_dvb_event_information_nownext_other = 0x4f, + stag_dvb_event_information_schedule_actual = 0x50, /* 0x50->0x5f */ + stag_dvb_event_information_schedule_other = 0x60, /* 0x60->0x6f */ + + stag_dvb_time_date = 0x70, + stag_dvb_running_status = 0x71, + stag_dvb_stuffing = 0x72, + stag_dvb_time_offset = 0x73, + stag_dvb_application_information = 0x74, + stag_dvb_tva_container = 0x75, + stag_dvb_tva_related_content = 0x76, + stag_dvb_tva_content_identifier = 0x77, + stag_dvb_mpe_fec = 0x78, + stag_dvb_tva_resolution_provider_notification = 0x79, + + stag_dvb_discontinuity_information = 0x7e, + stag_dvb_selection_information = 0x7f, + +}; + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/service_availability_descriptor.h b/lib/libucsi/dvb/service_availability_descriptor.h new file mode 100644 index 0000000..64def75 --- /dev/null +++ b/lib/libucsi/dvb/service_availability_descriptor.h @@ -0,0 +1,98 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_SERVICE_AVAILABILITY_DESCRIPTOR +#define _UCSI_DVB_SERVICE_AVAILABILITY_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_service_availability_descriptor structure. + */ +struct dvb_service_availability_descriptor { + struct descriptor d; + + EBIT2(uint8_t availability_flag : 1; , + uint8_t reserved : 7; ); + /* uint16_t cell_ids[] */ +} __ucsi_packed; + +/** + * Process a dvb_service_availability_descriptor. + * + * @param d Pointer to a generic descriptor structure. + * @return dvb_service_availability_descriptor pointer, or NULL on error. + */ +static inline struct dvb_service_availability_descriptor* + dvb_service_availability_descriptor_codec(struct descriptor* d) +{ + uint32_t pos = 0; + uint8_t* buf = (uint8_t*) d + 2; + uint32_t len = d->len; + + pos += sizeof(struct dvb_service_availability_descriptor) - 2; + + if ((len - pos) % 2) + return NULL; + + while(pos < len) { + bswap16(buf+pos); + pos += 2; + } + + return (struct dvb_service_availability_descriptor*) d; +} + +/** + * Accessor for the cell_ids field of a dvb_service_availability_descriptor. + * + * @param d dvb_service_availability_descriptor pointer. + * @return Pointer to the field. + */ +static inline uint16_t * + dvb_service_availability_descriptor_cell_ids(struct dvb_service_availability_descriptor *d) +{ + return (uint16_t *) ((uint8_t *) d + sizeof(struct dvb_service_availability_descriptor)); +} + +/** + * Determine the number of entries in the cell_ids field of a dvb_service_availability_descriptor. + * + * @param d dvb_service_availability_descriptor pointer. + * @return The number of entries. + */ +static inline int + dvb_service_availability_descriptor_cell_ids_count(struct dvb_service_availability_descriptor *d) +{ + return (d->d.len - 1) >> 1; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/service_descriptor.h b/lib/libucsi/dvb/service_descriptor.h new file mode 100644 index 0000000..dd0f0ec --- /dev/null +++ b/lib/libucsi/dvb/service_descriptor.h @@ -0,0 +1,163 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_SERVICE_DESCRIPTOR +#define _UCSI_DVB_SERVICE_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * Possible values for service_type. + */ +enum { + DVB_SERVICE_TYPE_DIGITAL_TV = 0x01, + DVB_SERVICE_TYPE_DIGITAL_RADIO = 0x02, + DVB_SERVICE_TYPE_TELETEXT = 0x03, + DVB_SERVICE_TYPE_NVOD_REF = 0x04, + DVB_SERVICE_TYPE_NVOD_TIMESHIFT = 0x05, + DVB_SERVICE_TYPE_MOSAIC = 0x06, + DVB_SERVICE_TYPE_PAL = 0x07, + DVB_SERVICE_TYPE_SECAM = 0x08, + DVB_SERVICE_TYPE_D_D2_MAC = 0x09, + DVB_SERVICE_TYPE_FM_RADIO = 0x0a, + DVB_SERVICE_TYPE_NTSC = 0x0b, + DVB_SERVICE_TYPE_DATA_BCAST = 0x0c, + DVB_SERVICE_TYPE_EN50221 = 0x0d, + DVB_SERVICE_TYPE_RCS_MAP = 0x0e, + DVB_SERVICE_TYPE_RCS_FLS = 0x0f, + DVB_SERVICE_TYPE_MHP = 0x10, + DVB_SERVICE_TYPE_MPEG2_HD_DIGITAL_TV = 0x11, + DVB_SERVICE_TYPE_ADVANCED_CODEC_SD_DIGITAL_TV = 0x16, + DVB_SERVICE_TYPE_ADVANCED_CODEC_SD_NVOD_TIMESHIFT = 0x17, + DVB_SERVICE_TYPE_ADVANCED_CODEC_SD_NVOD_REF = 0x18, + DVB_SERVICE_TYPE_ADVANCED_CODEC_HD_DIGITAL_TV = 0x19, + DVB_SERVICE_TYPE_ADVANCED_CODEC_HD_NVOD_TIMESHIFT = 0x1a, + DVB_SERVICE_TYPE_ADVANCED_CODEC_HD_NVOD_REF = 0x1b, +}; + +/** + * dvb_service_descriptor structure. + */ +struct dvb_service_descriptor { + struct descriptor d; + + uint8_t service_type; + uint8_t service_provider_name_length; + /* uint8_t service_provider_name[] */ + /* struct dvb_service_descriptor_part2 part2 */ +} __ucsi_packed; + +/** + * Second part of a dvb_service_descriptor following the variable length + * service_provider_name field. + */ +struct dvb_service_descriptor_part2 { + uint8_t service_name_length; + /* uint8_t service_name[] */ +} __ucsi_packed; + +/** + * Process a dvb_service_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_service_descriptor pointer, or NULL on error. + */ +static inline struct dvb_service_descriptor* + dvb_service_descriptor_codec(struct descriptor* d) +{ + struct dvb_service_descriptor *p = + (struct dvb_service_descriptor *) d; + struct dvb_service_descriptor_part2 *p2; + uint32_t pos = sizeof(struct dvb_service_descriptor) - 2; + uint32_t len = d->len; + + if (pos > len) + return NULL; + + pos += p->service_provider_name_length; + + if (pos > len) + return NULL; + + p2 = (struct dvb_service_descriptor_part2*) ((uint8_t*) d + 2 + pos); + + pos += sizeof(struct dvb_service_descriptor_part2); + + if (pos > len) + return NULL; + + pos += p2->service_name_length; + + if (pos != len) + return NULL; + + return p; +} + +/** + * Accessor for the service_provider_name field of a dvb_service_descriptor. + * + * @param d dvb_service_descriptor pointer. + * @return Pointer to the service_provider_name field. + */ +static inline uint8_t * + dvb_service_descriptor_service_provider_name(struct dvb_service_descriptor *d) +{ + return (uint8_t *) d + sizeof(struct dvb_service_descriptor); +} + +/** + * Accessor for the second part of a dvb_service_descriptor. + * + * @param d dvb_service_descriptor pointer. + * @return dvb_service_descriptor_part2 pointer. + */ +static inline struct dvb_service_descriptor_part2 * + dvb_service_descriptor_part2(struct dvb_service_descriptor *d) +{ + return (struct dvb_service_descriptor_part2 *) + ((uint8_t*) d + sizeof(struct dvb_service_descriptor) + + d->service_provider_name_length); +} + +/** + * Accessor for the service_name field of a dvb_service_descriptor_part2. + * + * @param d dvb_service_descriptor_part2 pointer. + * @return Pointer to the service_name field. + */ +static inline uint8_t * + dvb_service_descriptor_service_name(struct dvb_service_descriptor_part2 *d) +{ + return (uint8_t *) d + sizeof(struct dvb_service_descriptor_part2); +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/service_identifier_descriptor.h b/lib/libucsi/dvb/service_identifier_descriptor.h new file mode 100644 index 0000000..2037a05 --- /dev/null +++ b/lib/libucsi/dvb/service_identifier_descriptor.h @@ -0,0 +1,82 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_SERVICE_IDENTIFIER_DESCRIPTOR +#define _UCSI_DVB_SERVICE_IDENTIFIER_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_service_identifier_descriptor. + */ +struct dvb_service_identifier_descriptor { + struct descriptor d; + + /* uint8_t identifier[] */ +} __ucsi_packed; + +/** + * Process a dvb_service_identifier_descriptor. + * + * @param d Generic descriptor structure. + * @return dvb_service_identifier_descriptor pointer, or NULL on error. + */ +static inline struct dvb_service_identifier_descriptor* + dvb_service_identifier_descriptor_codec(struct descriptor* d) +{ + return (struct dvb_service_identifier_descriptor*) d; +} + +/** + * Retrieve a pointer to the identifier field of a dvb_service_identifier_descriptor. + * + * @param d dvb_service_identifier_descriptor pointer. + * @return Pointer to the field. + */ +static inline uint8_t * + dvb_service_identifier_descriptor_identifier(struct dvb_service_identifier_descriptor *d) +{ + return (uint8_t *) d + sizeof(struct dvb_service_identifier_descriptor); +} + +/** + * Calculate length of the identifier field of a dvb_service_identifier_descriptor. + * + * @param d dvb_service_identifier_descriptor pointer. + * @return The length in bytes. + */ +static inline int + dvb_service_identifier_descriptor_identifier_length(struct dvb_service_identifier_descriptor *d) +{ + return d->d.len; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/service_list_descriptor.h b/lib/libucsi/dvb/service_list_descriptor.h new file mode 100644 index 0000000..0086b25 --- /dev/null +++ b/lib/libucsi/dvb/service_list_descriptor.h @@ -0,0 +1,122 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_SERVICE_LIST_DESCRIPTOR +#define _UCSI_DVB_SERVICE_LIST_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_service_list_descriptor structure. + */ +struct dvb_service_list_descriptor { + struct descriptor d; + + /* struct dvb_service_list_service services[] */ +} __ucsi_packed; + +/** + * An entry in the services field of a dvb_service_list_descriptor. + */ +struct dvb_service_list_service { + uint16_t service_id; + uint8_t service_type; +} __ucsi_packed; + +/** + * Process a dvb_service_list_descriptor. + * + * @param d Generic descriptor structure. + * @return dvb_service_list_descriptor pointer, or NULL on error. + */ +static inline struct dvb_service_list_descriptor* + dvb_service_list_descriptor_codec(struct descriptor* d) +{ + uint32_t pos = 0; + uint32_t len = d->len; + uint8_t *p = (uint8_t*) d + 2; + + if (len % sizeof(struct dvb_service_list_service)) + return NULL; + + while(pos < len) { + bswap16(p+pos); + pos += sizeof(struct dvb_service_list_service); + } + + return (struct dvb_service_list_descriptor*) d; +} + +/** + * Iterator for services field in a dvb_service_list_descriptor. + * + * @param d dvb_service_list_descriptor pointer. + * @param pos Variable containing a pointer to the current dvb_service_list_service. + */ +#define dvb_service_list_descriptor_services_for_each(d, pos) \ + for ((pos) = dvb_service_list_descriptor_services_first(d); \ + (pos); \ + (pos) = dvb_service_list_descriptor_services_next(d, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_service_list_service* + dvb_service_list_descriptor_services_first(struct dvb_service_list_descriptor *d) +{ + if (d->d.len == 0) + return NULL; + + return (struct dvb_service_list_service *) + ((uint8_t*) d + sizeof(struct dvb_service_list_descriptor)); +} + +static inline struct dvb_service_list_service* + dvb_service_list_descriptor_services_next(struct dvb_service_list_descriptor *d, + struct dvb_service_list_service *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_service_list_service); + + if (next >= end) + return NULL; + + return (struct dvb_service_list_service *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/service_move_descriptor.h b/lib/libucsi/dvb/service_move_descriptor.h new file mode 100644 index 0000000..7685e65 --- /dev/null +++ b/lib/libucsi/dvb/service_move_descriptor.h @@ -0,0 +1,67 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_SERVICE_MOVE_DESCRIPTOR +#define _UCSI_DVB_SERVICE_MOVE_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_service_move_descriptor structure. + */ +struct dvb_service_move_descriptor { + struct descriptor d; + + uint16_t new_original_network_id; + uint16_t new_transport_stream_id; + uint16_t new_service_id; +} __ucsi_packed; + +/** + * Process a dvb_service_move_descriptor. + * + * @param d Generic descriptor structure. + * @return Pointer to dvb_service_move_descriptor, or NULL on error. + */ +static inline struct dvb_service_move_descriptor* + dvb_service_move_descriptor_codec(struct descriptor* d) +{ + if (d->len != (sizeof(struct dvb_service_move_descriptor) - 2)) + return NULL; + + bswap16((uint8_t*) d + 2); + bswap16((uint8_t*) d + 4); + bswap16((uint8_t*) d + 6); + + return (struct dvb_service_move_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/short_event_descriptor.h b/lib/libucsi/dvb/short_event_descriptor.h new file mode 100644 index 0000000..449c6f0 --- /dev/null +++ b/lib/libucsi/dvb/short_event_descriptor.h @@ -0,0 +1,135 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_SHORT_EVENT_DESCRIPTOR +#define _UCSI_DVB_SHORT_EVENT_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +/** + * dvb_short_event_descriptor structure. + */ +struct dvb_short_event_descriptor { + struct descriptor d; + + iso639lang_t language_code; + uint8_t event_name_length; + /* uint8_t event_name[] */ + /* struct dvb_short_event_descriptor_part2 part2 */ +} __ucsi_packed; + +/** + * Second part of a dvb_short_event_descriptor, following the variable length + * name field. + */ +struct dvb_short_event_descriptor_part2 { + uint8_t text_length; + /* uint8_t text[] */ +} __ucsi_packed; + +/** + * Process a dvb_short_event_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_short_event_descriptor pointer, or NULL on error. + */ +static inline struct dvb_short_event_descriptor* + dvb_short_event_descriptor_codec(struct descriptor* d) +{ + struct dvb_short_event_descriptor *p = + (struct dvb_short_event_descriptor*) d; + struct dvb_short_event_descriptor_part2 *p2; + uint32_t pos = sizeof(struct dvb_short_event_descriptor) - 2; + uint32_t len = d->len; + + if (pos > len) + return NULL; + + pos += p->event_name_length; + + if (pos > len) + return NULL; + + p2 = (struct dvb_short_event_descriptor_part2*) ((uint8_t*) d + 2 + pos); + + pos += sizeof(struct dvb_short_event_descriptor_part2); + + if (pos > len) + return NULL; + + pos += p2->text_length; + + if (pos != len) + return NULL; + + return p; +} + +/** + * Accessor for name field in a dvb_short_event_descriptor. + * + * @param d dvb_short_event_descriptor pointer. + * @return Pointer to name field. + */ +static inline uint8_t * + dvb_short_event_descriptor_event_name(struct dvb_short_event_descriptor *d) +{ + return (uint8_t *) d + sizeof(struct dvb_short_event_descriptor); +} + +/** + * Accessor for second part of a dvb_short_event_descriptor. + * + * @param d dvb_short_event_descriptor pointer. + * @return dvb_short_event_descriptor_part2 pointer. + */ +static inline struct dvb_short_event_descriptor_part2 * + dvb_short_event_descriptor_part2(struct dvb_short_event_descriptor *d) +{ + return (struct dvb_short_event_descriptor_part2 *) + ((uint8_t*) d + sizeof(struct dvb_short_event_descriptor) + + d->event_name_length); +} + +/** + * Accessor for text field in a dvb_short_event_descriptor_part2. + * + * @param d dvb_short_event_descriptor_part2 pointer. + * @return Pointer to text field. + */ +static inline uint8_t * + dvb_short_event_descriptor_text(struct dvb_short_event_descriptor_part2 *d) +{ + return (uint8_t *) d + sizeof(struct dvb_short_event_descriptor_part2); +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/short_smoothing_buffer_descriptor.h b/lib/libucsi/dvb/short_smoothing_buffer_descriptor.h new file mode 100644 index 0000000..e52d20a --- /dev/null +++ b/lib/libucsi/dvb/short_smoothing_buffer_descriptor.h @@ -0,0 +1,87 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_SHORT_SMOOTHING_BUFFER_DESCRIPTOR +#define _UCSI_DVB_SHORT_SMOOTHING_BUFFER_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_short_smoothing_buffer_descriptor structure. + */ +struct dvb_short_smoothing_buffer_descriptor { + struct descriptor d; + + EBIT2(uint8_t sb_size : 2; , + uint8_t sb_leak_rate : 6; ); + /* uint8_t reserved [] */ +} __ucsi_packed; + +/** + * Process a dvb_short_smoothing_buffer_descriptor. + * + * @param d Generic descriptor structure. + * @return dvb_short_smoothing_buffer_descriptor pointer, or NULL on error. + */ +static inline struct dvb_short_smoothing_buffer_descriptor* + dvb_short_smoothing_buffer_descriptor_codec(struct descriptor* d) +{ + if (d->len < (sizeof(struct dvb_short_smoothing_buffer_descriptor) - 2)) + return NULL; + + return (struct dvb_short_smoothing_buffer_descriptor*) d; +} + +/** + * Accessor for reserved field in a dvb_short_smoothing_buffer_descriptor. + * + * @param d dvb_short_smoothing_buffer_descriptor pointer. + * @return Pointer to reserved field. + */ +static inline uint8_t * + dvb_short_smoothing_buffer_descriptor_reserved(struct dvb_short_smoothing_buffer_descriptor *d) +{ + return (uint8_t*) d + sizeof(struct dvb_short_smoothing_buffer_descriptor); +} + +/** + * Calculate length of reserved field in a dvb_short_smoothing_buffer_descriptor. + * + * @param d dvb_short_smoothing_buffer_descriptor pointer. + * @return Length of the field in bytes. + */ +static inline int + dvb_short_smoothing_buffer_descriptor_reserved_length(struct dvb_short_smoothing_buffer_descriptor *d) +{ + return d->d.len - 1; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/sit_section.c b/lib/libucsi/dvb/sit_section.c new file mode 100644 index 0000000..06c228c --- /dev/null +++ b/lib/libucsi/dvb/sit_section.c @@ -0,0 +1,69 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <libucsi/dvb/sit_section.h> + +struct dvb_sit_section * dvb_sit_section_codec(struct section_ext * ext) +{ + uint8_t * buf = (uint8_t *) ext; + struct dvb_sit_section * ret = (struct dvb_sit_section *) ext; + size_t pos = sizeof(struct section_ext); + size_t len = section_ext_length(ext); + + if (len < sizeof(struct dvb_sit_section)) + return NULL; + + bswap16(buf + pos); + pos += 2; + + if ((pos + ret->transmission_info_loop_length) > len) + return NULL; + + if (verify_descriptors(buf + pos, ret->transmission_info_loop_length)) + return NULL; + + pos += ret->transmission_info_loop_length; + + while (pos < len) { + struct dvb_sit_service * service = (void*)(buf + pos); + + if ((pos + sizeof(struct dvb_sit_service)) > len) + return NULL; + + bswap16(buf + pos); + bswap16(buf + pos + 2); + bswap16(buf + pos + 4); + pos += sizeof(struct dvb_sit_service); + + if ((pos + service->service_loop_length) > len) + return NULL; + + if (verify_descriptors(buf + pos, service->service_loop_length)) + return NULL; + + pos += service->service_loop_length; + } + + if (pos != len) + return NULL; + + return ret; +} diff --git a/lib/libucsi/dvb/sit_section.h b/lib/libucsi/dvb/sit_section.h new file mode 100644 index 0000000..e06d596 --- /dev/null +++ b/lib/libucsi/dvb/sit_section.h @@ -0,0 +1,173 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_SIT_SECTION_H +#define _UCSI_DVB_SIT_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/section.h> + +/** + * dvb_sit_section structure. + */ +struct dvb_sit_section { + struct section_ext head; + + EBIT2(uint16_t reserved : 4; , + uint16_t transmission_info_loop_length :12; ); + /* struct descriptor descriptors[] */ + /* struct dvb_sit_service services[] */ +}; + +/** + * An entry in the services field of a dvb_sit_section. + */ +struct dvb_sit_service { + uint16_t service_id; + EBIT3(uint16_t reserved : 1; , + uint16_t running_status : 3; , + uint16_t service_loop_length :12; ); + /* struct descriptor descriptors[] */ +}; + +/** + * Process a dvb_sit_section. + * + * @param section Generic section_ext structure. + * @return dvb_sit_section pointer, or NULL on error. + */ +struct dvb_sit_section * dvb_sit_section_codec(struct section_ext *section); + +/** + * Iterator for descriptors field in a dvb_sit_section. + * + * @param sit dvb_sit_section Pointer. + * @param pos Variable holding pointer to current descriptor. + */ +#define dvb_sit_section_descriptors_for_each(sit, pos) \ + for ((pos) = dvb_sit_section_descriptors_first(sit); \ + (pos); \ + (pos) = dvb_sit_section_descriptors_first(sit)) + +/** + * Iterator for services field in a dvb_sit_section. + * + * @param sit dvb_sit_section Pointer. + * @param pos Variable holding pointer to current dvb_sit_service. + */ +#define dvb_sit_section_services_for_each(sit, pos) \ + for ((pos) = dvb_sit_section_services_first(sit); \ + (pos); \ + (pos) = dvb_sit_section_services_next(sit, pos)) + +/** + * Iterator for descriptors field in a dvb_sit_service. + * + * @param service dvb_sit_service Pointer. + * @param pos Variable holding pointer to current descriptor. + */ +#define dvb_sit_service_descriptors_for_each(service, pos) \ + for ((pos) = dvb_sit_service_descriptors_first(service); \ + (pos); \ + (pos) = dvb_sit_service_descriptors_next(service, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct descriptor * + dvb_sit_section_descriptors_first(struct dvb_sit_section *sit) +{ + if (sit->transmission_info_loop_length == 0) + return NULL; + + return (struct descriptor *) + ((uint8_t *) sit + sizeof(struct dvb_sit_section)); +} + +static inline struct descriptor * + dvb_sit_section_descriptors_next(struct dvb_sit_section *sit, + struct descriptor* pos) +{ + return next_descriptor((uint8_t*) sit + sizeof(struct dvb_sit_section), + sit->transmission_info_loop_length, + pos); +} + +static inline struct dvb_sit_service * + dvb_sit_section_services_first(struct dvb_sit_section *sit) +{ + size_t pos = sizeof(struct dvb_sit_section) + sit->transmission_info_loop_length; + + if (pos >= section_ext_length(&sit->head)) + return NULL; + + return (struct dvb_sit_service*) ((uint8_t *) sit + pos); +} + +static inline struct dvb_sit_service * + dvb_sit_section_services_next(struct dvb_sit_section *sit, + struct dvb_sit_service *pos) +{ + uint8_t *end = (uint8_t*) sit + section_ext_length(&sit->head); + uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_sit_service) + + pos->service_loop_length; + + if (next >= end) + return NULL; + + return (struct dvb_sit_service *) next; +} + +static inline struct descriptor * + dvb_sit_service_descriptors_first(struct dvb_sit_service * t) +{ + if (t->service_loop_length == 0) + return NULL; + + return (struct descriptor *) + ((uint8_t *) t + sizeof(struct dvb_sit_service)); +} + +static inline struct descriptor * + dvb_sit_service_descriptors_next(struct dvb_sit_service *t, + struct descriptor* pos) +{ + return next_descriptor((uint8_t*) t + sizeof(struct dvb_sit_service), + t->service_loop_length, + pos); +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/st_section.c b/lib/libucsi/dvb/st_section.c new file mode 100644 index 0000000..0e60aa1 --- /dev/null +++ b/lib/libucsi/dvb/st_section.c @@ -0,0 +1,29 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <libucsi/dvb/st_section.h> + +struct dvb_st_section * dvb_st_section_codec(struct section * section) +{ + struct dvb_st_section * ret = (struct dvb_st_section *)section; + + return ret; +} diff --git a/lib/libucsi/dvb/st_section.h b/lib/libucsi/dvb/st_section.h new file mode 100644 index 0000000..52ba888 --- /dev/null +++ b/lib/libucsi/dvb/st_section.h @@ -0,0 +1,77 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_ST_SECTION_H +#define _UCSI_DVB_ST_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/section.h> + +/** + * dvb_st_section structure. + */ +struct dvb_st_section { + struct section head; + + /* uint8_t data[] */ +}; + +/** + * Process a dvb_st_section. + * + * @param section Generic section header. + * @return dvb_st_section pointer, or NULL on error. + */ +struct dvb_st_section *dvb_st_section_codec(struct section *section); + +/** + * Accessor for data field of dvb_st_section. + * + * @param st dvb_st_section Pointer. + * @return Pointer to field. + */ +static inline uint8_t* + dvb_st_section_data(struct dvb_st_section* st) +{ + return (uint8_t*) st + sizeof(struct dvb_st_section); +} + +/** + * Calculate length of data field of dvb_st_section. + * + * @param st dvb_st_section Pointer. + * @return Length in bytes. + */ +static inline int + dvb_st_section_data_length(struct dvb_st_section* st) +{ + return st->head.length; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/stream_identifier_descriptor.h b/lib/libucsi/dvb/stream_identifier_descriptor.h new file mode 100644 index 0000000..262c7e2 --- /dev/null +++ b/lib/libucsi/dvb/stream_identifier_descriptor.h @@ -0,0 +1,61 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_STREAM_IDENTIFIER_DESCRIPTOR +#define _UCSI_DVB_STREAM_IDENTIFIER_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_stream_identifier_descriptor structure. + */ +struct dvb_stream_identifier_descriptor { + struct descriptor d; + + uint8_t component_tag; +} __ucsi_packed; + +/** + * Process a dvb_stream_identifier_descriptor. + * + * @param d Pointer to generic descriptor structure. + * @return dvb_stream_identifier_descriptor pointer, or NULL on error. + */ +static inline struct dvb_stream_identifier_descriptor* + dvb_stream_identifier_descriptor_codec(struct descriptor* d) +{ + if (d->len != (sizeof(struct dvb_stream_identifier_descriptor) - 2)) + return NULL; + + return (struct dvb_stream_identifier_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/stuffing_descriptor.h b/lib/libucsi/dvb/stuffing_descriptor.h new file mode 100644 index 0000000..48e415d --- /dev/null +++ b/lib/libucsi/dvb/stuffing_descriptor.h @@ -0,0 +1,82 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_STUFFING_DESCRIPTOR +#define _UCSI_DVB_STUFFING_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_stuffing_descriptor. + */ +struct dvb_stuffing_descriptor { + struct descriptor d; + + /* uint8_t data[] */ +} __ucsi_packed; + +/** + * Process a dvb_stuffing_descriptor. + * + * @param d Generic descriptor structure. + * @return dvb_stuffing_descriptor pointer, or NULL on error. + */ +static inline struct dvb_stuffing_descriptor* + dvb_stuffing_descriptor_codec(struct descriptor* d) +{ + return (struct dvb_stuffing_descriptor*) d; +} + +/** + * Retrieve a pointer to the data field of a dvb_stuffing_descriptor. + * + * @param d dvb_stuffing_descriptor pointer. + * @return Pointer to the field. + */ +static inline uint8_t * + dvb_stuffing_descriptor_data(struct dvb_stuffing_descriptor *d) +{ + return (uint8_t *) d + sizeof(struct dvb_stuffing_descriptor); +} + +/** + * Calculate length of the data field of a dvb_stuffing_descriptor. + * + * @param d dvb_stuffing_descriptor pointer. + * @return The length in bytes. + */ +static inline int + dvb_stuffing_descriptor_data_length(struct dvb_stuffing_descriptor *d) +{ + return d->d.len; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/subtitling_descriptor.h b/lib/libucsi/dvb/subtitling_descriptor.h new file mode 100644 index 0000000..74fc25a --- /dev/null +++ b/lib/libucsi/dvb/subtitling_descriptor.h @@ -0,0 +1,126 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_SUBTITLING_DESCRIPTOR +#define _UCSI_DVB_SUBTITLING_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +/** + * dvb_subtitling_descriptor structure. + */ +struct dvb_subtitling_descriptor { + struct descriptor d; + + /* struct dvb_subtitling_entry subtitles[] */ +} __ucsi_packed; + +/** + * An entry in the subtitles field of the a dvb_subtitling_descriptor. + */ +struct dvb_subtitling_entry { + iso639lang_t language_code; + uint8_t subtitling_type; + uint16_t composition_page_id; + uint16_t ancillary_page_id; +} __ucsi_packed; + +/** + * Process a dvb_subtitling_descriptor. + * + * @param d Generic descriptor. + * @return dvb_subtitling_descriptor pointer, or NULL on error. + */ +static inline struct dvb_subtitling_descriptor* + dvb_subtitling_descriptor_codec(struct descriptor* d) +{ + uint32_t pos = 0; + uint8_t* ptr = (uint8_t*) d + 2; + uint32_t len = d->len; + + if (len % sizeof(struct dvb_subtitling_entry)) + return NULL; + + while(pos < len) { + bswap16(ptr+pos+4); + bswap16(ptr+pos+6); + pos += sizeof(struct dvb_subtitling_entry); + } + + return (struct dvb_subtitling_descriptor*) d; +} + +/** + * Iterator for subtitles field in dvb_subtitling_descriptor. + * + * @param d dvb_subtitling_descriptor pointer. + * @param pos Variable containing a pointer to current dvb_subtitling_entry. + */ +#define dvb_subtitling_descriptor_subtitles_for_each(d, pos) \ + for ((pos) = dvb_subtitling_descriptor_subtitles_first(d); \ + (pos); \ + (pos) = dvb_subtitling_descriptor_subtitles_next(d, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_subtitling_entry* + dvb_subtitling_descriptor_subtitles_first(struct dvb_subtitling_descriptor *d) +{ + if (d->d.len == 0) + return NULL; + + return (struct dvb_subtitling_entry *) + ((uint8_t*) d + sizeof(struct dvb_subtitling_descriptor)); +} + +static inline struct dvb_subtitling_entry* + dvb_subtitling_descriptor_subtitles_next(struct dvb_subtitling_descriptor *d, + struct dvb_subtitling_entry *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_subtitling_entry); + + if (next >= end) + return NULL; + + return (struct dvb_subtitling_entry *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/target_ip_address_descriptor.h b/lib/libucsi/dvb/target_ip_address_descriptor.h new file mode 100644 index 0000000..c08b60e --- /dev/null +++ b/lib/libucsi/dvb/target_ip_address_descriptor.h @@ -0,0 +1,116 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * Copyright (C) 2006 Stephane Este-Gracias (sestegra@free.fr) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_TARGET_IP_ADDRESS_DESCRIPTOR +#define _UCSI_DVB_TARGET_IP_ADDRESS_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/types.h> + +/** + * dvb_target_ip_address_descriptor structure. + */ +struct dvb_target_ip_address_descriptor { + struct descriptor d; + + uint8_t ipv4_addr_mask[4]; + /* struct dvb_ipv4_addr ipv4_addr[] */ +} __ucsi_packed; + +/** + * An entry in the ipv4_addr field of a dvb_target_ip_address_descriptor. + */ +struct dvb_ipv4_addr { + uint8_t ipv4_addr[4]; +} __ucsi_packed; + +/** + * Process a dvb_target_ip_address_descriptor. + * + * @param d Generic descriptor structure pointer. + * @return dvb_target_ip_address_descriptor pointer, or NULL on error. + */ +static inline struct dvb_target_ip_address_descriptor* + dvb_target_ip_address_descriptor_codec(struct descriptor* d) +{ + uint32_t len = d->len - 4; + + if (len % sizeof(struct dvb_ipv4_addr)) + return NULL; + + return (struct dvb_target_ip_address_descriptor*) d; +} + +/** + * Iterator for entries in the ipv4_addr field of a dvb_target_ip_address_descriptor. + * + * @param d dvb_target_ip_address_descriptor pointer. + * @param pos Variable containing a pointer to the current dvb_ipv4_addr. + */ +#define dvb_target_ip_address_descriptor_ipv4_addr_for_each(d, pos) \ + for ((pos) = dvb_target_ip_address_descriptor_ipv4_addr_first(d); \ + (pos); \ + (pos) = dvb_target_ip_address_descriptor_ipv4_addr_next(d, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_ipv4_addr* + dvb_target_ip_address_descriptor_ipv4_addr_first(struct dvb_target_ip_address_descriptor *d) +{ + if (d->d.len == 4) + return NULL; + + return (struct dvb_ipv4_addr *) + ((uint8_t*) d + sizeof(struct dvb_target_ip_address_descriptor)); +} + +static inline struct dvb_ipv4_addr* + dvb_target_ip_address_descriptor_ipv4_addr_next(struct dvb_target_ip_address_descriptor *d, + struct dvb_ipv4_addr *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len - 4; + uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_ipv4_addr); + + if (next >= end) + return NULL; + + return (struct dvb_ipv4_addr *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/target_ip_slash_descriptor.h b/lib/libucsi/dvb/target_ip_slash_descriptor.h new file mode 100644 index 0000000..e5bc76a --- /dev/null +++ b/lib/libucsi/dvb/target_ip_slash_descriptor.h @@ -0,0 +1,116 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * Copyright (C) 2006 Stephane Este-Gracias (sestegra@free.fr) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_TARGET_IP_SLASH_DESCRIPTOR +#define _UCSI_DVB_TARGET_IP_SLASH_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/types.h> + +/** + * dvb_target_ip_slash_descriptor structure. + */ +struct dvb_target_ip_slash_descriptor { + struct descriptor d; + + /* struct dvb_ipv4_slash ipv4_slash[] */ +} __ucsi_packed; + +/** + * An entry in the ipv4_slash field of a dvb_target_ip_slash_descriptor. + */ +struct dvb_ipv4_slash { + uint8_t ipv4_addr[4]; + uint8_t ipv4_slash; +} __ucsi_packed; + +/** + * Process a dvb_target_ip_slash_descriptor. + * + * @param d Generic descriptor structure pointer. + * @return dvb_target_ip_slash_descriptor pointer, or NULL on error. + */ +static inline struct dvb_target_ip_slash_descriptor* + dvb_target_ip_slash_descriptor_codec(struct descriptor* d) +{ + uint32_t len = d->len; + + if (len % sizeof(struct dvb_ipv4_slash)) + return NULL; + + return (struct dvb_target_ip_slash_descriptor*) d; +} + +/** + * Iterator for entries in the ipv4_slash field of a dvb_target_ip_slash_descriptor. + * + * @param d dvb_target_ip_slash_descriptor pointer. + * @param pos Variable containing a pointer to the current dvb_ipv4_slash. + */ +#define dvb_target_ip_slash_descriptor_ipv4_slash_for_each(d, pos) \ + for ((pos) = dvb_target_ip_slash_descriptor_ipv4_slash_first(d); \ + (pos); \ + (pos) = dvb_target_ip_slash_descriptor_ipv4_slash_next(d, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_ipv4_slash* + dvb_target_ip_slash_descriptor_ipv4_slash_first(struct dvb_target_ip_slash_descriptor *d) +{ + if (d->d.len == 0) + return NULL; + + return (struct dvb_ipv4_slash *) + ((uint8_t*) d + sizeof(struct dvb_target_ip_slash_descriptor)); +} + +static inline struct dvb_ipv4_slash* + dvb_target_ip_slash_descriptor_ipv4_slash_next(struct dvb_target_ip_slash_descriptor *d, + struct dvb_ipv4_slash *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_ipv4_slash); + + if (next >= end) + return NULL; + + return (struct dvb_ipv4_slash *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/target_ip_source_slash_descriptor.h b/lib/libucsi/dvb/target_ip_source_slash_descriptor.h new file mode 100644 index 0000000..8cade48 --- /dev/null +++ b/lib/libucsi/dvb/target_ip_source_slash_descriptor.h @@ -0,0 +1,118 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * Copyright (C) 2006 Stephane Este-Gracias (sestegra@free.fr) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_TARGET_IP_SOURCE_SLASH_DESCRIPTOR +#define _UCSI_DVB_TARGET_IP_SOURCE_SLASH_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/types.h> + +/** + * dvb_target_ip_source_slash_descriptor structure. + */ +struct dvb_target_ip_source_slash_descriptor { + struct descriptor d; + + /* struct dvb_ipv4_source_slash ipv4_source_slash[] */ +} __ucsi_packed; + +/** + * An entry in the ipv4_source_slash field of a dvb_target_ip_source_slash_descriptor. + */ +struct dvb_ipv4_source_slash { + uint8_t ipv4_source_addr[4]; + uint8_t ipv4_source_slash; + uint8_t ipv4_dest_addr[4]; + uint8_t ipv4_dest_slash; +} __ucsi_packed; + +/** + * Process a dvb_target_ip_source_slash_descriptor. + * + * @param d Generic descriptor structure pointer. + * @return dvb_target_ip_source_slash_descriptor pointer, or NULL on error. + */ +static inline struct dvb_target_ip_source_slash_descriptor* + dvb_target_ip_source_slash_descriptor_codec(struct descriptor* d) +{ + uint32_t len = d->len; + + if (len % sizeof(struct dvb_ipv4_source_slash)) + return NULL; + + return (struct dvb_target_ip_source_slash_descriptor*) d; +} + +/** + * Iterator for entries in the ipv4_source_slash field of a dvb_target_ip_source_slash_descriptor. + * + * @param d dvb_target_ip_source_slash_descriptor pointer. + * @param pos Variable containing a pointer to the current dvb_ipv4_source_slash. + */ +#define dvb_target_ip_source_slash_descriptor_ipv4_source_slash_for_each(d, pos) \ + for ((pos) = dvb_target_ip_source_slash_descriptor_ipv4_source_slash_first(d); \ + (pos); \ + (pos) = dvb_target_ip_source_slash_descriptor_ipv4_source_slash_next(d, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_ipv4_source_slash* + dvb_target_ip_source_slash_descriptor_ipv4_source_slash_first(struct dvb_target_ip_source_slash_descriptor *d) +{ + if (d->d.len == 0) + return NULL; + + return (struct dvb_ipv4_source_slash *) + ((uint8_t*) d + sizeof(struct dvb_target_ip_source_slash_descriptor)); +} + +static inline struct dvb_ipv4_source_slash* + dvb_target_ip_source_slash_descriptor_ipv4_source_slash_next(struct dvb_target_ip_source_slash_descriptor *d, + struct dvb_ipv4_source_slash *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_ipv4_source_slash); + + if (next >= end) + return NULL; + + return (struct dvb_ipv4_source_slash *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/target_ipv6_address_descriptor.h b/lib/libucsi/dvb/target_ipv6_address_descriptor.h new file mode 100644 index 0000000..1b28b48 --- /dev/null +++ b/lib/libucsi/dvb/target_ipv6_address_descriptor.h @@ -0,0 +1,116 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * Copyright (C) 2006 Stephane Este-Gracias (sestegra@free.fr) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_TARGET_IPV6_ADDRESS_DESCRIPTOR +#define _UCSI_DVB_TARGET_IPV6_ADDRESS_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/types.h> + +/** + * dvb_target_ipv6_address_descriptor structure. + */ +struct dvb_target_ipv6_address_descriptor { + struct descriptor d; + + uint8_t ipv6_addr_mask[16]; + /* struct dvb_ipv6_addr ipv6_addr[] */ +} __ucsi_packed; + +/** + * An entry in the ipv6_addr field of a dvb_target_ipv6_address_descriptor. + */ +struct dvb_ipv6_addr { + uint8_t ipv6_addr[16]; +} __ucsi_packed; + +/** + * Process a dvb_target_ipv6_address_descriptor. + * + * @param d Generic descriptor structure pointer. + * @return dvb_target_ipv6_address_descriptor pointer, or NULL on error. + */ +static inline struct dvb_target_ipv6_address_descriptor* + dvb_target_ipv6_address_descriptor_codec(struct descriptor* d) +{ + uint32_t len = d->len - 16; + + if (len % sizeof(struct dvb_ipv6_addr)) + return NULL; + + return (struct dvb_target_ipv6_address_descriptor*) d; +} + +/** + * Iterator for entries in the ipv6_addr field of a dvb_target_ipv6_address_descriptor. + * + * @param d dvb_target_ipv6_address_descriptor pointer. + * @param pos Variable containing a pointer to the current dvb_ipv6_addr. + */ +#define dvb_target_ipv6_address_descriptor_ipv6_addr_for_each(d, pos) \ + for ((pos) = dvb_target_ipv6_address_descriptor_ipv6_addr_first(d); \ + (pos); \ + (pos) = dvb_target_ipv6_address_descriptor_ipv6_addr_next(d, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_ipv6_addr* + dvb_target_ipv6_address_descriptor_ipv6_addr_first(struct dvb_target_ipv6_address_descriptor *d) +{ + if (d->d.len == 16) + return NULL; + + return (struct dvb_ipv6_addr *) + ((uint8_t*) d + sizeof(struct dvb_target_ipv6_address_descriptor)); +} + +static inline struct dvb_ipv6_addr* + dvb_target_ipv6_address_descriptor_ipv6_addr_next(struct dvb_target_ipv6_address_descriptor *d, + struct dvb_ipv6_addr *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len - 16; + uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_ipv6_addr); + + if (next >= end) + return NULL; + + return (struct dvb_ipv6_addr *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/target_ipv6_slash_descriptor.h b/lib/libucsi/dvb/target_ipv6_slash_descriptor.h new file mode 100644 index 0000000..3dc6d75 --- /dev/null +++ b/lib/libucsi/dvb/target_ipv6_slash_descriptor.h @@ -0,0 +1,116 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * Copyright (C) 2006 Stephane Este-Gracias (sestegra@free.fr) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_TARGET_IPV6_SLASH_DESCRIPTOR +#define _UCSI_DVB_TARGET_IPV6_SLASH_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/types.h> + +/** + * dvb_target_ipv6_slash_descriptor structure. + */ +struct dvb_target_ipv6_slash_descriptor { + struct descriptor d; + + /* struct dvb_ipv6_slash ipv6_slash[] */ +} __ucsi_packed; + +/** + * An entry in the ipv6_slash field of a dvb_target_ipv6_slash_descriptor. + */ +struct dvb_ipv6_slash { + uint8_t ipv6_addr[16]; + uint8_t ipv6_slash; +} __ucsi_packed; + +/** + * Process a dvb_target_ipv6_slash_descriptor. + * + * @param d Generic descriptor structure pointer. + * @return dvb_target_ipv6_slash_descriptor pointer, or NULL on error. + */ +static inline struct dvb_target_ipv6_slash_descriptor* + dvb_target_ipv6_slash_descriptor_codec(struct descriptor* d) +{ + uint32_t len = d->len; + + if (len % sizeof(struct dvb_ipv6_slash)) + return NULL; + + return (struct dvb_target_ipv6_slash_descriptor*) d; +} + +/** + * Iterator for entries in the ipv6_slash field of a dvb_target_ipv6_slash_descriptor. + * + * @param d dvb_target_ipv6_slash_descriptor pointer. + * @param pos Variable containing a pointer to the current dvb_ipv6_slash. + */ +#define dvb_target_ipv6_slash_descriptor_ipv6_slash_for_each(d, pos) \ + for ((pos) = dvb_target_ipv6_slash_descriptor_ipv6_slash_first(d); \ + (pos); \ + (pos) = dvb_target_ipv6_slash_descriptor_ipv6_slash_next(d, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_ipv6_slash* + dvb_target_ipv6_slash_descriptor_ipv6_slash_first(struct dvb_target_ipv6_slash_descriptor *d) +{ + if (d->d.len == 0) + return NULL; + + return (struct dvb_ipv6_slash *) + ((uint8_t*) d + sizeof(struct dvb_target_ipv6_slash_descriptor)); +} + +static inline struct dvb_ipv6_slash* + dvb_target_ipv6_slash_descriptor_ipv6_slash_next(struct dvb_target_ipv6_slash_descriptor *d, + struct dvb_ipv6_slash *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_ipv6_slash); + + if (next >= end) + return NULL; + + return (struct dvb_ipv6_slash *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/target_ipv6_source_slash_descriptor.h b/lib/libucsi/dvb/target_ipv6_source_slash_descriptor.h new file mode 100644 index 0000000..3a4b38e --- /dev/null +++ b/lib/libucsi/dvb/target_ipv6_source_slash_descriptor.h @@ -0,0 +1,118 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * Copyright (C) 2006 Stephane Este-Gracias (sestegra@free.fr) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_TARGET_IPV6_SOURCE_SLASH_DESCRIPTOR +#define _UCSI_DVB_TARGET_IPV6_SOURCE_SLASH_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/types.h> + +/** + * dvb_target_ipv6_source_slash_descriptor structure. + */ +struct dvb_target_ipv6_source_slash_descriptor { + struct descriptor d; + + /* struct dvb_ipv6_source_slash ipv6_source_slash[] */ +} __ucsi_packed; + +/** + * An entry in the ipv6_source_slash field of a dvb_target_ipv6_source_slash_descriptor. + */ +struct dvb_ipv6_source_slash { + uint8_t ipv6_source_addr[16]; + uint8_t ipv6_source_slash; + uint8_t ipv6_dest_addr[16]; + uint8_t ipv6_dest_slash; +} __ucsi_packed; + +/** + * Process a dvb_target_ipv6_source_slash_descriptor. + * + * @param d Generic descriptor structure pointer. + * @return dvb_target_ipv6_source_slash_descriptor pointer, or NULL on error. + */ +static inline struct dvb_target_ipv6_source_slash_descriptor* + dvb_target_ipv6_source_slash_descriptor_codec(struct descriptor* d) +{ + uint32_t len = d->len; + + if (len % sizeof(struct dvb_ipv6_source_slash)) + return NULL; + + return (struct dvb_target_ipv6_source_slash_descriptor*) d; +} + +/** + * Iterator for entries in the ipv6_source_slash field of a dvb_target_ipv6_source_slash_descriptor. + * + * @param d dvb_target_ipv6_source_slash_descriptor pointer. + * @param pos Variable containing a pointer to the current dvb_ipv6_source_slash. + */ +#define dvb_target_ipv6_source_slash_descriptor_ipv6_source_slash_for_each(d, pos) \ + for ((pos) = dvb_target_ipv6_source_slash_descriptor_ipv6_source_slash_first(d); \ + (pos); \ + (pos) = dvb_target_ipv6_source_slash_descriptor_ipv6_source_slash_next(d, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_ipv6_source_slash* + dvb_target_ipv6_source_slash_descriptor_ipv6_source_slash_first(struct dvb_target_ipv6_source_slash_descriptor *d) +{ + if (d->d.len == 0) + return NULL; + + return (struct dvb_ipv6_source_slash *) + ((uint8_t*) d + sizeof(struct dvb_target_ipv6_source_slash_descriptor)); +} + +static inline struct dvb_ipv6_source_slash* + dvb_target_ipv6_source_slash_descriptor_ipv6_source_slash_next(struct dvb_target_ipv6_source_slash_descriptor *d, + struct dvb_ipv6_source_slash *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_ipv6_source_slash); + + if (next >= end) + return NULL; + + return (struct dvb_ipv6_source_slash *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/tdt_section.c b/lib/libucsi/dvb/tdt_section.c new file mode 100644 index 0000000..ba64fe9 --- /dev/null +++ b/lib/libucsi/dvb/tdt_section.c @@ -0,0 +1,33 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <libucsi/dvb/tdt_section.h> + +struct dvb_tdt_section * dvb_tdt_section_codec(struct section * section) +{ + size_t len = section_length(section); + struct dvb_tdt_section * ret = (struct dvb_tdt_section *) section; + + if (len != sizeof(struct dvb_tdt_section)) + return NULL; + + return ret; +} diff --git a/lib/libucsi/dvb/tdt_section.h b/lib/libucsi/dvb/tdt_section.h new file mode 100644 index 0000000..fc2bcb8 --- /dev/null +++ b/lib/libucsi/dvb/tdt_section.h @@ -0,0 +1,54 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_TDT_SECTION_H +#define _UCSI_DVB_TDT_SECTION_H + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/section.h> +#include <libucsi/dvb/types.h> + +/** + * dvb_tdt_section structure. + */ +struct dvb_tdt_section { + struct section head; + + dvbdate_t utc_time; +} __ucsi_packed; + +/** + * Process a dvb_tdt_section. + * + * @param section Generic section header. + * @return dvb_tdt_section pointer, or NULL on error. + */ +struct dvb_tdt_section *dvb_tdt_section_codec(struct section *section); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/telephone_descriptor.h b/lib/libucsi/dvb/telephone_descriptor.h new file mode 100644 index 0000000..3dc43a1 --- /dev/null +++ b/lib/libucsi/dvb/telephone_descriptor.h @@ -0,0 +1,150 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_TELEPHONE_DESCRIPTOR +#define _UCSI_DVB_TELEPHONE_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_telephone_descriptor stucture. + */ +struct dvb_telephone_descriptor { + struct descriptor d; + + EBIT3(uint8_t reserved_1 : 2; , + uint8_t foreign_availability : 1; , + uint8_t connection_type : 5; ); + EBIT4(uint8_t reserved_2 : 1; , + uint8_t country_prefix_length : 2; , + uint8_t international_area_code_length : 3; , + uint8_t operator_code_length : 2; ); + EBIT3(uint8_t reserved_3 : 1; , + uint8_t national_area_code_length : 3; , + uint8_t core_number_length : 4; ); + /* uint8_t country_prefix[] */ + /* uint8_t international_area_code[] */ + /* uint8_t operator_code[] */ + /* uint8_t national_area_code[] */ + /* uint8_t core_number[] */ +} __ucsi_packed; + + +/** + * Process a dvb_telephone_descriptor. + * + * @param d Generic descriptor. + * @return dvb_telephone_descriptor pointer, or NULL on error. + */ +static inline struct dvb_telephone_descriptor* + dvb_telephone_descriptor_codec(struct descriptor* d) +{ + struct dvb_telephone_descriptor* p = + (struct dvb_telephone_descriptor*) d; + uint32_t pos = sizeof(struct dvb_telephone_descriptor) - 2; + uint32_t len = d->len; + + if (pos > len) + return NULL; + + pos += p->country_prefix_length + + p->international_area_code_length + + p->operator_code_length + + p->national_area_code_length + + p->core_number_length; + + if (pos != len) + return NULL; + + return p; +} + +/** + * Retrieve pointer to country_prefix field of a dvb_telephone_descriptor. + * + * @param d dvb_telephone_descriptor pointer. + * @return Pointer to the field. + */ +static inline uint8_t* + dvb_telephone_descriptor_country_prefix(struct dvb_telephone_descriptor* d) +{ + return (uint8_t*) d + sizeof(struct dvb_telephone_descriptor); +} + +/** + * Retrieve pointer to international_area_code field of a dvb_telephone_descriptor. + * + * @param d dvb_telephone_descriptor pointer. + * @return Pointer to the field. + */ +static inline uint8_t* + dvb_telephone_descriptor_international_area_code(struct dvb_telephone_descriptor* d) +{ + return dvb_telephone_descriptor_country_prefix(d) + d->country_prefix_length; +} + +/** + * Retrieve pointer to operator_code field of a dvb_telephone_descriptor. + * + * @param d dvb_telephone_descriptor pointer. + * @return Pointer to the field. + */ +static inline uint8_t* + dvb_telephone_descriptor_operator_code(struct dvb_telephone_descriptor* d) +{ + return dvb_telephone_descriptor_international_area_code(d) + d->international_area_code_length; +} + +/** + * Retrieve pointer to national_area_code field of a dvb_telephone_descriptor. + * + * @param d dvb_telephone_descriptor pointer. + * @return Pointer to the field. + */ +static inline uint8_t* + dvb_telephone_descriptor_national_area_code(struct dvb_telephone_descriptor* d) +{ + return dvb_telephone_descriptor_operator_code(d) + d->operator_code_length; +} + +/** + * Retrieve pointer to core_number field of a dvb_telephone_descriptor. + * + * @param d dvb_telephone_descriptor pointer. + * @return Pointer to the field. + */ +static inline uint8_t* + dvb_telephone_descriptor_core_number(struct dvb_telephone_descriptor* d) +{ + return dvb_telephone_descriptor_national_area_code(d) + d->national_area_code_length; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/teletext_descriptor.h b/lib/libucsi/dvb/teletext_descriptor.h new file mode 100644 index 0000000..424c1cb --- /dev/null +++ b/lib/libucsi/dvb/teletext_descriptor.h @@ -0,0 +1,127 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_TELETEXT_DESCRIPTOR +#define _UCSI_DVB_TELETEXT_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +/** + * Possible values for the type field. + */ +enum { + DVB_TELETEXT_TYPE_INITIAL = 0x01, + DVB_TELETEXT_TYPE_SUBTITLE = 0x02, + DVB_TELETEXT_TYPE_ADDITIONAL = 0x03, + DVB_TELETEXT_TYPE_SCHEDULE = 0x04, + DVB_TELETEXT_TYPE_SUBTITLE_HEARING_IMPAIRED= 0x05, +}; + +/** + * dvb_teletext_descriptor structure. + */ +struct dvb_teletext_descriptor { + struct descriptor d; + + /* struct dvb_teletext_entry entries[] */ +} __ucsi_packed; + +/** + * An entry in the entries field of a dvb_teletext_descriptor. + */ +struct dvb_teletext_entry { + iso639lang_t language_code; + EBIT2(uint8_t type : 5; , + uint8_t magazine_number: 3; ); + uint8_t page_number; +} __ucsi_packed; + +/** + * Process a dvb_teletext_descriptor. + * + * @param d Generic descriptor. + * @return dvb_teletext_descriptor pointer, or NULL on error. + */ +static inline struct dvb_teletext_descriptor* + dvb_teletext_descriptor_codec(struct descriptor* d) +{ + if (d->len % sizeof(struct dvb_teletext_entry)) + return NULL; + + return (struct dvb_teletext_descriptor*) d; +} + +/** + * Iterator for entries field of a dvb_teletext_descriptor. + * + * @param d dvb_teletext_descriptor pointer. + * @param pos Variable holding a pointer to the current dvb_teletext_entry. + */ +#define dvb_teletext_descriptor_entries_for_each(d, pos) \ + for ((pos) = dvb_teletext_descriptor_entries_first(d); \ + (pos); \ + (pos) = dvb_teletext_descriptor_entries_next(d, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_teletext_entry* + dvb_teletext_descriptor_entries_first(struct dvb_teletext_descriptor *d) +{ + if (d->d.len == 0) + return NULL; + + return (struct dvb_teletext_entry *) + ((uint8_t*) d + sizeof(struct dvb_teletext_descriptor)); +} + +static inline struct dvb_teletext_entry* + dvb_teletext_descriptor_entries_next(struct dvb_teletext_descriptor *d, + struct dvb_teletext_entry *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_teletext_entry); + + if (next >= end) + return NULL; + + return (struct dvb_teletext_entry *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/terrestrial_delivery_descriptor.h b/lib/libucsi/dvb/terrestrial_delivery_descriptor.h new file mode 100644 index 0000000..c624dab --- /dev/null +++ b/lib/libucsi/dvb/terrestrial_delivery_descriptor.h @@ -0,0 +1,77 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_TERRESTRIAL_DELIVERY_DESCRIPTOR +#define _UCSI_DVB_TERRESTRIAL_DELIVERY_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_terrestrial_delivery_descriptor structure. + */ +struct dvb_terrestrial_delivery_descriptor { + struct descriptor d; + + uint32_t centre_frequency; // Normal integer, units 10Hz + EBIT5(uint8_t bandwidth : 3; , + uint8_t priority : 1; , + uint8_t time_slicing_indicator : 1; , + uint8_t mpe_fec_indicator : 1; , + uint8_t reserved_1 : 2; ); + EBIT3(uint8_t constellation : 2; , + uint8_t hierarchy_information : 3; , + uint8_t code_rate_hp_stream : 3; ); + EBIT4(uint8_t code_rate_lp_stream : 3; , + uint8_t guard_interval : 2; , + uint8_t transmission_mode : 2; , + uint8_t other_frequency_flag : 1; ); + uint32_t reserved_2; +} __ucsi_packed; + +/** + * Process a dvb_terrestrial_delivery_descriptor. + * + * @param d Generic descriptor structure. + * @return dvb_terrestrial_delivery_descriptor pointer, or NULL on error. + */ +static inline struct dvb_terrestrial_delivery_descriptor* + dvb_terrestrial_delivery_descriptor_codec(struct descriptor* d) +{ + if (d->len != (sizeof(struct dvb_terrestrial_delivery_descriptor) - 2)) + return NULL; + + bswap32((uint8_t*) d + 2); + bswap32((uint8_t*) d + 9); + + return (struct dvb_terrestrial_delivery_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/time_shifted_event_descriptor.h b/lib/libucsi/dvb/time_shifted_event_descriptor.h new file mode 100644 index 0000000..6b4a9f6 --- /dev/null +++ b/lib/libucsi/dvb/time_shifted_event_descriptor.h @@ -0,0 +1,65 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_TIME_SHIFTED_EVENT_DESCRIPTOR +#define _UCSI_DVB_TIME_SHIFTED_EVENT_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_time_shifted_event_descriptor structure. + */ +struct dvb_time_shifted_event_descriptor { + struct descriptor d; + + uint16_t reference_service_id; + uint16_t reference_event_id; +} __ucsi_packed; + +/** + * Process a dvb_time_shifted_event_descriptor. + * + * @param d Generic descriptor. + * @return dvb_time_shifted_event_descriptor pointer, or NULL on error. + */ +static inline struct dvb_time_shifted_event_descriptor* + dvb_time_shifted_event_descriptor_codec(struct descriptor* d) +{ + if (d->len != (sizeof(struct dvb_time_shifted_event_descriptor) - 2)) + return NULL; + + bswap16((uint8_t*) d + 2); + bswap16((uint8_t*) d + 4); + + return (struct dvb_time_shifted_event_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/time_shifted_service_descriptor.h b/lib/libucsi/dvb/time_shifted_service_descriptor.h new file mode 100644 index 0000000..c8dcc0e --- /dev/null +++ b/lib/libucsi/dvb/time_shifted_service_descriptor.h @@ -0,0 +1,63 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_TIME_SHIFTED_SERVICE_DESCRIPTOR +#define _UCSI_DVB_TIME_SHIFTED_SERVICE_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_time_shifted_service_descriptor structure. + */ +struct dvb_time_shifted_service_descriptor { + struct descriptor d; + + uint16_t reference_service_id; +} __ucsi_packed; + +/** + * Process a dvb_time_shifted_service_descriptor. + * + * @param d Generic descriptor. + * @return Pointer to dvb_time_shifted_service_descriptor, or NULL on error. + */ +static inline struct dvb_time_shifted_service_descriptor* + dvb_time_shifted_service_descriptor_codec(struct descriptor* d) +{ + if (d->len != (sizeof(struct dvb_time_shifted_service_descriptor) - 2)) + return NULL; + + bswap16((uint8_t*) d + 2); + + return (struct dvb_time_shifted_service_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/tot_section.c b/lib/libucsi/dvb/tot_section.c new file mode 100644 index 0000000..5dc7890 --- /dev/null +++ b/lib/libucsi/dvb/tot_section.c @@ -0,0 +1,50 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <libucsi/dvb/tot_section.h> + +struct dvb_tot_section *dvb_tot_section_codec(struct section *section) +{ + uint8_t * buf = (uint8_t *)section; + size_t pos = sizeof(struct section); + size_t len = section_length(section) - CRC_SIZE; + struct dvb_tot_section * ret = (struct dvb_tot_section *)section; + + if (len < sizeof(struct dvb_tot_section)) + return NULL; + + pos += 5; + bswap16(buf + pos); + pos += 2; + + if ((pos + ret->descriptors_loop_length) > len) + return NULL; + + if (verify_descriptors(buf + pos, ret->descriptors_loop_length)) + return NULL; + + pos += ret->descriptors_loop_length; + + if (pos != len) + return NULL; + + return ret; +} diff --git a/lib/libucsi/dvb/tot_section.h b/lib/libucsi/dvb/tot_section.h new file mode 100644 index 0000000..3474da1 --- /dev/null +++ b/lib/libucsi/dvb/tot_section.h @@ -0,0 +1,97 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_TOT_SECTION_H +#define _UCSI_DVB_TOT_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/section.h> +#include <libucsi/dvb/types.h> + +/** + * dvb_tot_section structure. + */ +struct dvb_tot_section { + struct section head; + + dvbdate_t utc_time; + EBIT2(uint16_t reserved : 4; , + uint16_t descriptors_loop_length:12; ); + /* struct descriptor descriptors[] */ +} __ucsi_packed; + +/** + * Process a dvb_tot_section. + * + * @param section Pointer to generic section structure. + * @return dvb_tot_section pointer, or NULL on error. + */ +struct dvb_tot_section * dvb_tot_section_codec(struct section *section); + +/** + * Iterator for descriptors field of dvb_tot_section. + * + * @param tot dvb_tot_section pointer. + * @param pos Variable holding a pointer to the current descriptor. + */ +#define dvb_tot_section_descriptors_for_each(tot, pos) \ + for ((pos) = dvb_tot_section_descriptors_first(tot); \ + (pos); \ + (pos) = dvb_tot_section_descriptors_next(tot, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct descriptor * + dvb_tot_section_descriptors_first(struct dvb_tot_section * tot) +{ + if (tot->descriptors_loop_length == 0) + return NULL; + + return (struct descriptor *) + ((uint8_t *) tot + sizeof(struct dvb_tot_section)); +} + +static inline struct descriptor * + dvb_tot_section_descriptors_next(struct dvb_tot_section *tot, + struct descriptor* pos) +{ + return next_descriptor((uint8_t *) tot + sizeof(struct dvb_tot_section), + tot->descriptors_loop_length, + pos); +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/transport_stream_descriptor.h b/lib/libucsi/dvb/transport_stream_descriptor.h new file mode 100644 index 0000000..1797ec5 --- /dev/null +++ b/lib/libucsi/dvb/transport_stream_descriptor.h @@ -0,0 +1,82 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_TRANSPORT_STREAM_DESCRIPTOR +#define _UCSI_DVB_TRANSPORT_STREAM_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_transport_stream_descriptor structure. + */ +struct dvb_transport_stream_descriptor { + struct descriptor d; + + /* uint8_t data[] */ +} __ucsi_packed; + +/** + * Process dvb_transport_stream_descriptor structure. + * + * @param d Pointer to generic descriptor. + * @return dvb_transport_stream_descriptor structure or NULL on error. + */ +static inline struct dvb_transport_stream_descriptor* + dvb_transport_stream_descriptor_codec(struct descriptor* d) +{ + return (struct dvb_transport_stream_descriptor*) d; +} + +/** + * Retrieve a pointer to the data field of a dvb_transport_stream_descriptor. + * + * @param d dvb_transport_stream_descriptor structure. + * @return Pointer to data field. + */ +static inline uint8_t * + dvb_transport_stream_descriptor_data(struct dvb_transport_stream_descriptor *d) +{ + return (uint8_t *) d + sizeof(struct dvb_transport_stream_descriptor); +} + +/** + * Calculate the length of the data field of a dvb_transport_stream_descriptor. + * + * @param d dvb_transport_stream_descriptor structure. + * @return length of data field in bytes. + */ +static inline int + dvb_transport_stream_descriptor_data_length(struct dvb_transport_stream_descriptor *d) +{ + return d->d.len; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/tva_container_section.c b/lib/libucsi/dvb/tva_container_section.c new file mode 100644 index 0000000..f526efc --- /dev/null +++ b/lib/libucsi/dvb/tva_container_section.c @@ -0,0 +1,33 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <libucsi/dvb/tva_container_section.h> + +struct dvb_tva_container_section *dvb_tva_container_section_codec(struct section_ext *ext) +{ + size_t len = section_ext_length(ext); + struct dvb_tva_container_section* ret = (struct dvb_tva_container_section*) ext; + + if (len < sizeof(struct dvb_tva_container_section)) + return NULL; + + return ret; +} diff --git a/lib/libucsi/dvb/tva_container_section.h b/lib/libucsi/dvb/tva_container_section.h new file mode 100644 index 0000000..7d0abb1 --- /dev/null +++ b/lib/libucsi/dvb/tva_container_section.h @@ -0,0 +1,90 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_TVA_CONTAINER_SECTION_H +#define _UCSI_DVB_TVA_CONTAINER_SECTION_H + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/section.h> +#include <libucsi/dvb/types.h> + +/** + * dvb_tva_container_section structure. + */ +struct dvb_tva_container_section { + struct section_ext head; + + /* uint8_t data[] */ +} __ucsi_packed; + +/** + * Process a dvb_tva_container_section. + * + * @param section Generic section header. + * @return dvb_tdt_section pointer, or NULL on error. + */ +struct dvb_tva_container_section *dvb_tva_container_section_codec(struct section_ext *ext); + +/** + * Accessor for the container_id field of a tva container section. + * + * @param container dvb_tva_container_section pointer. + * @return The container_id. + */ +static inline uint16_t dvb_tva_container_section_container_id(struct dvb_tva_container_section *container) +{ + return container->head.table_id_ext; +} + +/** + * Accessor for the data field of a dvb_data_broadcast_id_descriptor. + * + * @param d dvb_data_broadcast_id_descriptor pointer. + * @return Pointer to the field. + */ +static inline uint8_t * +dvb_tva_container_section_data(struct dvb_tva_container_section *s) +{ + return (uint8_t *) s + sizeof(struct dvb_tva_container_section); +} + +/** + * Determine the number of bytes in the data field of a dvb_tva_container_section. + * + * @param d dvb_tva_container_section pointer. + * @return Length of the field in bytes. + */ +static inline int +dvb_tva_container_section_data_length(struct dvb_tva_container_section *s) +{ + return section_ext_length(&s->head) - sizeof(struct dvb_tva_container_section); +} + + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/tva_id_descriptor.h b/lib/libucsi/dvb/tva_id_descriptor.h new file mode 100644 index 0000000..3b4f3e8 --- /dev/null +++ b/lib/libucsi/dvb/tva_id_descriptor.h @@ -0,0 +1,124 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_TVA_ID_DESCRIPTOR +#define _UCSI_DVB_TVA_ID_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * dvb_tva_id_descriptor structure. + */ +struct dvb_tva_id_descriptor { + struct descriptor d; + + /* struct dvb_tva_id_entry entries[] */ +} __ucsi_packed; + +/** + * An entry in the entries field of a dvb_tva_id_descriptor. + */ +struct dvb_tva_id_entry { + uint16_t tva_id; + EBIT2(uint8_t reserved : 5; , + uint8_t running_status : 3; ); +} __ucsi_packed; + +/** + * Process a dvb_tva_id_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_tva_id_descriptor pointer, or NULL on error. + */ +static inline struct dvb_tva_id_descriptor* + dvb_tva_id_descriptor_codec(struct descriptor* d) +{ + uint32_t pos = 0; + uint32_t len = d->len; + uint8_t* buf = (uint8_t*) d + 2; + + pos += sizeof(struct dvb_tva_id_descriptor) - 2; + if (len % sizeof(struct dvb_tva_id_entry)) + return NULL; + + while(pos < len) { + bswap16(buf+pos); + pos+=3; + } + + return (struct dvb_tva_id_descriptor*) d; +} + +/** + * Iterator for the entries field of a dvb_tva_id_descriptor. + * + * @param d dvb_tva_id_descriptor pointer. + * @param pos Variable containing a pointer to the current dvb_tva_id_entry. + */ +#define dvb_tva_id_descriptor_entries_for_each(d, pos) \ + for ((pos) = dvb_tva_id_descriptor_entries_first(d); \ + (pos); \ + (pos) = dvb_tva_id_descriptor_entries_next(d, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_tva_id_entry* + dvb_tva_id_descriptor_entries_first(struct dvb_tva_id_descriptor *d) +{ + if (d->d.len == 0) + return NULL; + + return (struct dvb_tva_id_entry *) + ((uint8_t*) d + sizeof(struct dvb_tva_id_descriptor)); +} + +static inline struct dvb_tva_id_entry* + dvb_tva_id_descriptor_entries_next(struct dvb_tva_id_descriptor *d, + struct dvb_tva_id_entry *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_tva_id_entry); + + if (next >= end) + return NULL; + + return (struct dvb_tva_id_entry *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/types.c b/lib/libucsi/dvb/types.c new file mode 100644 index 0000000..c1cf583 --- /dev/null +++ b/lib/libucsi/dvb/types.c @@ -0,0 +1,270 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <string.h> +#include "types.h" + +time_t dvbdate_to_unixtime(dvbdate_t dvbdate) +{ + int k = 0; + struct tm tm; + double mjd; + + /* check for the undefined value */ + if ((dvbdate[0] == 0xff) && + (dvbdate[1] == 0xff) && + (dvbdate[2] == 0xff) && + (dvbdate[3] == 0xff) && + (dvbdate[4] == 0xff)) { + return -1; + } + + memset(&tm, 0, sizeof(tm)); + mjd = (dvbdate[0] << 8) | dvbdate[1]; + + tm.tm_year = (int) ((mjd - 15078.2) / 365.25); + tm.tm_mon = (int) (((mjd - 14956.1) - (int) (tm.tm_year * 365.25)) / 30.6001); + tm.tm_mday = (int) mjd - 14956 - (int) (tm.tm_year * 365.25) - (int) (tm.tm_mon * 30.6001); + if ((tm.tm_mon == 14) || (tm.tm_mon == 15)) k = 1; + tm.tm_year += k; + tm.tm_mon = tm.tm_mon - 2 - k * 12; + tm.tm_sec = bcd_to_integer(dvbdate[4]); + tm.tm_min = bcd_to_integer(dvbdate[3]); + tm.tm_hour = bcd_to_integer(dvbdate[2]); + + return mktime(&tm); +} + +void unixtime_to_dvbdate(time_t unixtime, dvbdate_t dvbdate) +{ + struct tm tm; + double l = 0; + int mjd; + + /* the undefined value */ + if (unixtime == -1) { + memset(dvbdate, 0xff, 5); + return; + } + + gmtime_r(&unixtime, &tm); + tm.tm_mon++; + if ((tm.tm_mon == 1) || (tm.tm_mon == 2)) l = 1; + mjd = 14956 + tm.tm_mday + (int) ((tm.tm_year - l) * 365.25) + (int) ((tm.tm_mon + 1 + l * 12) * 30.6001); + + dvbdate[0] = (mjd & 0xff00) >> 8; + dvbdate[1] = mjd & 0xff; + dvbdate[2] = integer_to_bcd(tm.tm_hour); + dvbdate[3] = integer_to_bcd(tm.tm_min); + dvbdate[4] = integer_to_bcd(tm.tm_sec); +} + +int dvbduration_to_seconds(dvbduration_t dvbduration) +{ + int seconds = 0; + + seconds += (bcd_to_integer(dvbduration[0]) * 60 * 60); + seconds += (bcd_to_integer(dvbduration[1]) * 60); + seconds += bcd_to_integer(dvbduration[2]); + + return seconds; +} + +void seconds_to_dvbduration(int seconds, dvbduration_t dvbduration) +{ + int hours, mins; + + hours = seconds / (60*60); + seconds -= (hours * 60 * 60); + mins = seconds / 60; + seconds -= (mins * 60); + + dvbduration[0] = integer_to_bcd(hours); + dvbduration[1] = integer_to_bcd(mins); + dvbduration[2] = integer_to_bcd(seconds); +} + +int dvbhhmm_to_seconds(dvbhhmm_t dvbhhmm) +{ + int seconds = 0; + + seconds += (bcd_to_integer(dvbhhmm[0]) * 60 * 60); + seconds += (bcd_to_integer(dvbhhmm[1]) * 60); + + return seconds; +} + +void seconds_to_dvbhhmm(int seconds, dvbhhmm_t dvbhhmm) +{ + int hours, mins; + + hours = seconds / (60*60); + seconds -= (hours * 60 * 60); + mins = seconds / 60; + + dvbhhmm[0] = integer_to_bcd(hours); + dvbhhmm[1] = integer_to_bcd(mins); +} + +uint32_t integer_to_bcd(uint32_t intval) +{ + uint32_t val = 0; + + int i; + for(i=0; i<=28;i+=4) { + val |= ((intval % 10) << i); + intval /= 10; + } + + return val; +} + +uint32_t bcd_to_integer(uint32_t bcdval) +{ + uint32_t val = 0; + + int i; + for(i=28; i>=0;i-=4) { + val += ((bcdval >> i) & 0x0f); + if (i != 0) val *= 10; + } + + return val; +} + +const char *dvb_charset(char *dvb_text, int dvb_text_length, int *consumed) +{ + char *charset = "ISO6937"; + int used = 0; + + if (dvb_text_length == 0) + goto exit; + if (dvb_text[0] >= 32) + goto exit; + if (dvb_text[0] == 0x10) { + if (dvb_text_length < 3) + goto exit; + + used = 3; + uint16_t ext = (dvb_text[1] << 8) | dvb_text[2]; + switch(ext) { + case 0x01: + charset = "ISO8859-1"; + break; + case 0x02: + charset = "ISO8859-2"; + break; + case 0x03: + charset = "ISO8859-3"; + break; + case 0x04: + charset = "ISO8859-4"; + break; + case 0x05: + charset = "ISO8859-5"; + break; + case 0x06: + charset = "ISO8859-6"; + break; + case 0x07: + charset = "ISO8859-7"; + break; + case 0x08: + charset = "ISO8859-8"; + break; + case 0x09: + charset = "ISO8859-9"; + break; + case 0x0a: + charset = "ISO8859-10"; + break; + case 0x0b: + charset = "ISO8859-11"; + break; + case 0x0d: + charset = "ISO8859-13"; + break; + case 0x0e: + charset = "ISO8859-14"; + break; + case 0x0f: + charset = "ISO8859-15"; + break; + default: + used = 0; + break; + } + } else { + used = 1; + switch(dvb_text[0]) { + case 0x01: + charset = "ISO8859-5"; + break; + case 0x02: + charset = "ISO8859-6"; + break; + case 0x03: + charset = "ISO8859-7"; + break; + case 0x04: + charset = "ISO8859-8"; + break; + case 0x05: + charset = "ISO8859-9"; + break; + case 0x06: + charset = "ISO8859-10"; + break; + case 0x07: + charset = "ISO8859-11"; + break; + case 0x09: + charset = "ISO8859-13"; + break; + case 0x0a: + charset = "ISO8859-14"; + break; + case 0x0b: + charset = "ISO8859-15"; + break; + case 0x11: + charset = "UTF16"; + break; + case 0x12: + charset = "EUC-KR"; + break; + case 0x13: + charset = "GB2312"; + break; + case 0x14: + charset = "GBK"; + break; + case 0x15: + charset = "UTF8"; + break; + default: + used = 0; + break; + } + } +exit: + *consumed = used; + return charset; +} diff --git a/lib/libucsi/dvb/types.h b/lib/libucsi/dvb/types.h new file mode 100644 index 0000000..437c7c3 --- /dev/null +++ b/lib/libucsi/dvb/types.h @@ -0,0 +1,127 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_TYPES_H +#define _UCSI_DVB_TYPES_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <stdint.h> +#include <time.h> + +typedef uint8_t dvbdate_t[5]; +typedef uint8_t dvbduration_t[3]; +typedef uint8_t dvbhhmm_t[2]; + +/** + * Running status values. + */ +enum { + DVB_RUNNING_STATUS_NOT_RUNNING = 0x01, + DVB_RUNNING_STATUS_FEW_SECONDS = 0x02, + DVB_RUNNING_STATUS_PAUSING = 0x03, + DVB_RUNNING_STATUS_RUNNING = 0x04, +}; + +/** + * Convert from a 5 byte DVB UTC date to unix time. + * Note: this functions expects the DVB date in network byte order. + * + * @param d Pointer to DVB date. + * @return The unix timestamp, or -1 if the dvbdate was set to the 'undefined' value + */ +extern time_t dvbdate_to_unixtime(dvbdate_t dvbdate); + +/** + * Convert from a unix timestemp to a 5 byte DVB UTC date. + * Note: this function will always output the DVB date in + * network byte order. + * + * @param unixtime The unix timestamp, or -1 for the 'undefined' value. + * @param utc Pointer to 5 byte DVB date. + */ +extern void unixtime_to_dvbdate(time_t unixtime, dvbdate_t dvbdate); + +/** + * Convert from a DVB BCD duration to a number of seconds. + * + * @param dvbduration Pointer to 3 byte DVB duration. + * @return Number of seconds. + */ +extern int dvbduration_to_seconds(dvbduration_t dvbduration); + +/** + * Convert from a number of seconds to a DVB 3 byte BCD duration. + * + * @param seconds The number of seconds. + * @param dvbduration Pointer to 3 byte DVB duration. + */ +extern void seconds_to_dvbduration(int seconds, dvbduration_t dvbduration); + +/** + * Convert from a DVB BCD HHMM to a number of seconds. + * + * @param dvbduration Pointer to 2 byte DVB HHMM. + * @return Number of seconds. + */ +extern int dvbhhmm_to_seconds(dvbhhmm_t dvbhhmm); + +/** + * Convert from a number of seconds to a DVB 2 byte BCD HHMM. + * + * @param seconds The number of seconds. + * @param dvbduration Pointer to 2 byte DVB HHMM. + */ +extern void seconds_to_dvbhhmm(int seconds, dvbhhmm_t dvbhhmm); + +/** + * Convert a __ucsi_packed BCD value into a normal integer. + * + * @param bcd The value to convert. + * @return The value. + */ +extern uint32_t bcd_to_integer(uint32_t bcd); + +/** + * Convert a normal integer into a __ucsi_packed BCD value. + * + * @param integer The value to convert. + * @return The value. + */ +extern uint32_t integer_to_bcd(uint32_t integer); + +/** + * Determine the (iconv compatable) character set of a dvb string. + * + * @param dvb_text DVB text concerned. + * @param dvb_text_length Length of text. + * @param consumed Out parameter of number of bytes used to encode the character set. + * @return Name of the character set. + */ +extern const char *dvb_charset(char *dvb_text, int dvb_text_length, int *consumed); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/vbi_data_descriptor.h b/lib/libucsi/dvb/vbi_data_descriptor.h new file mode 100644 index 0000000..b1d8703 --- /dev/null +++ b/lib/libucsi/dvb/vbi_data_descriptor.h @@ -0,0 +1,186 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_VBI_DATA_DESCRIPTOR +#define _UCSI_DVB_VBI_DATA_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * Possible values for the data_service_id field. + */ +enum { + DVB_VBI_DATA_SERVICE_ID_EBU = 0x01, + DVB_VBI_DATA_SERVICE_ID_INVERTED = 0x02, + DVB_VBI_DATA_SERVICE_ID_VPS = 0x04, + DVB_VBI_DATA_SERVICE_ID_WSS = 0x05, + DVB_VBI_DATA_SERVICE_ID_CC = 0x06, + DVB_VBI_DATA_SERVICE_ID_MONO_422 = 0x07, +}; + +/** + * dvb_vbi_data_descriptor structure + */ +struct dvb_vbi_data_descriptor { + struct descriptor d; + + /* struct dvb_vbi_data_entry entries[] */ +} __ucsi_packed; + +/** + * An entry in the dvb_vbi_data_descriptor entries field. + */ +struct dvb_vbi_data_entry { + uint8_t data_service_id; + uint8_t data_length; + /* uint8_t data[] */ +} __ucsi_packed; + +/** + * Format of the dvb_vbi_data_entry data field, if data_service_id == 1,2,4,5,6,7. + */ +struct dvb_vbi_data_x { + EBIT3(uint8_t reserved : 2; , + uint8_t field_parity : 1; , + uint8_t line_offset : 5; ); +} __ucsi_packed; + +/** + * Process a dvb_vbi_data_descriptor. + * + * @param d Generic descriptor structure. + * @return dvb_vbi_data_descriptor pointer, or NULL on error. + */ +static inline struct dvb_vbi_data_descriptor* + dvb_vbi_data_descriptor_codec(struct descriptor* d) +{ + uint8_t* p = (uint8_t*) d + 2; + uint32_t pos = 0; + uint32_t len = d->len; + + while(pos < len) { + struct dvb_vbi_data_entry *e = + (struct dvb_vbi_data_entry*) (p+pos); + + pos += sizeof(struct dvb_vbi_data_entry); + + if (pos > len) + return NULL; + + pos += e->data_length; + + if (pos > len) + return NULL; + } + + return (struct dvb_vbi_data_descriptor*) d; +} + +/** + * Iterator for entries field in a dvb_vbi_data_descriptor structure. + * + * @param d Pointer to dvb_vbi_data_descriptor structure. + * @param pos Variable holding pointer to the current dvb_vbi_data_entry structure. + */ +#define dvb_vbi_data_descriptor_entries_for_each(d, pos) \ + for ((pos) = dvb_vbi_data_descriptor_entries_first(d); \ + (pos); \ + (pos) = dvb_vbi_data_descriptor_entries_next(d, pos)) + +/** + * Get a pointer to the data field of a dvb_vbi_data_entry. + * + * @param d dvb_vbi_data_entry structure. + * @return Pointer to the data field. + */ +static inline uint8_t * + dvb_vbi_data_entry_data(struct dvb_vbi_data_entry *d) +{ + return (uint8_t *) d + sizeof(struct dvb_vbi_data_entry); +} + +/** + * Get a pointer to the data field of a dvb_vbi_data_x for id 1,2,4,5,6,7. + * + * @param d dvb_vbi_data_entry structure. + * @return Pointer to the data field, or NULL if invalid + */ +static inline struct dvb_vbi_data_x* + dvb_vbi_data_entry_data_x(struct dvb_vbi_data_entry *d) +{ + switch(d->data_service_id) { + case 1: + case 2: + case 4: + case 5: + case 6: + case 7: + return (struct dvb_vbi_data_x*) ((uint8_t *) d + sizeof(struct dvb_vbi_data_entry)); + } + + return NULL; +} + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_vbi_data_entry* + dvb_vbi_data_descriptor_entries_first(struct dvb_vbi_data_descriptor *d) +{ + if (d->d.len == 0) + return NULL; + + return (struct dvb_vbi_data_entry *) + ((uint8_t*) d + sizeof(struct dvb_vbi_data_descriptor)); +} + +static inline struct dvb_vbi_data_entry* + dvb_vbi_data_descriptor_entries_next(struct dvb_vbi_data_descriptor *d, + struct dvb_vbi_data_entry *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_vbi_data_entry) + + pos->data_length; + + if (next >= end) + return NULL; + + return (struct dvb_vbi_data_entry *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/dvb/vbi_teletext_descriptor.h b/lib/libucsi/dvb/vbi_teletext_descriptor.h new file mode 100644 index 0000000..fd779d7 --- /dev/null +++ b/lib/libucsi/dvb/vbi_teletext_descriptor.h @@ -0,0 +1,116 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_VBI_TELETEXT_DESCRIPTOR +#define _UCSI_DVB_VBI_TELETEXT_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +/** + * dvb_vbi_teletext_descriptor structure + */ +struct dvb_vbi_teletext_descriptor { + struct descriptor d; + + /* struct dvb_vbi_teletext_entry entries[] */ +} __ucsi_packed; + +/** + * An entry in a dvb_vbi_teletext_descriptor structure. + */ +struct dvb_vbi_teletext_entry { + iso639lang_t language_code; + EBIT2(uint8_t type : 5; , + uint8_t magazine_number: 3; ); + uint8_t page_number; +} __ucsi_packed; + +/** + * Process an dvb_vbi_teletext_descriptor. + * + * @param d Generic descriptor. + * @return dvb_vbi_teletext_descriptor pointer, or NULL on error. + */ +static inline struct dvb_vbi_teletext_descriptor* + dvb_vbi_teletext_descriptor_codec(struct descriptor* d) +{ + if (d->len % sizeof(struct dvb_vbi_teletext_entry)) + return NULL; + + return (struct dvb_vbi_teletext_descriptor*) d; +} + +/** + * Iterator for entries field of a dvb_vbi_teletext_descriptor. + * + * @param d Pointer to dvb_vbi_teletext_descriptor. + * @param pos Variable holding a pointer to the current dvb_vbi_teletext_entry. + */ +#define dvb_vbi_teletext_descriptor_entries_for_each(d, pos) \ + for ((pos) = dvb_vbi_teletext_descriptor_entries_first(d); \ + (pos); \ + (pos) = dvb_vbi_teletext_descriptor_entries_next(d, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct dvb_vbi_teletext_entry* + dvb_vbi_teletext_descriptor_entries_first(struct dvb_vbi_teletext_descriptor *d) +{ + if (d->d.len == 0) + return NULL; + + return (struct dvb_vbi_teletext_entry *) + ((uint8_t*) d + sizeof(struct dvb_vbi_teletext_descriptor)); +} + +static inline struct dvb_vbi_teletext_entry* + dvb_vbi_teletext_descriptor_entries_next(struct dvb_vbi_teletext_descriptor *d, + struct dvb_vbi_teletext_entry *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_vbi_teletext_entry); + + if (next >= end) + return NULL; + + return (struct dvb_vbi_teletext_entry *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/endianops.h b/lib/libucsi/endianops.h new file mode 100644 index 0000000..23b418b --- /dev/null +++ b/lib/libucsi/endianops.h @@ -0,0 +1,128 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_COMMON_H +#define _UCSI_COMMON_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <stdint.h> +#include <byteswap.h> +#include <endian.h> + +#define __ucsi_packed __attribute__((packed)) + + + + +#if __BYTE_ORDER == __BIG_ENDIAN +#define EBIT2(x1,x2) x1 x2 +#define EBIT3(x1,x2,x3) x1 x2 x3 +#define EBIT4(x1,x2,x3,x4) x1 x2 x3 x4 +#define EBIT5(x1,x2,x3,x4,x5) x1 x2 x3 x4 x5 +#define EBIT6(x1,x2,x3,x4,x5,x6) x1 x2 x3 x4 x5 x6 +#define EBIT7(x1,x2,x3,x4,x5,x6,x7) x1 x2 x3 x4 x5 x6 x7 +#define EBIT8(x1,x2,x3,x4,x5,x6,x7,x8) x1 x2 x3 x4 x5 x6 x7 x8 + +static inline void bswap16(uint8_t *buf) { + (void) buf; +} + +static inline void bswap32(uint8_t *buf) { + (void) buf; +} + +static inline void bswap64(uint8_t *buf) { + (void) buf; +} + +static inline void bswap24(uint8_t *buf) { + (void) buf; +} + +static inline void bswap40(uint8_t *buf) { + (void) buf; +} + +static inline void bswap48(uint8_t *buf) { + (void) buf; +} + +#else +#define EBIT2(x1,x2) x2 x1 +#define EBIT3(x1,x2,x3) x3 x2 x1 +#define EBIT4(x1,x2,x3,x4) x4 x3 x2 x1 +#define EBIT5(x1,x2,x3,x4,x5) x5 x4 x3 x2 x1 +#define EBIT6(x1,x2,x3,x4,x5,x6) x6 x5 x4 x3 x2 x1 +#define EBIT7(x1,x2,x3,x4,x5,x6,x7) x7 x6 x5 x4 x3 x2 x1 +#define EBIT8(x1,x2,x3,x4,x5,x6,x7,x8) x8 x7 x6 x5 x4 x3 x2 x1 + +static inline void bswap16(uint8_t * buf) { + *((uint16_t*)buf) = bswap_16((*(uint16_t*)buf)); +} + +static inline void bswap32(uint8_t * buf) { + *((uint32_t*)buf) = bswap_32((*(uint32_t*)buf)); +} + +static inline void bswap64(uint8_t * buf) { + *((uint64_t*)buf) = bswap_64((*(uint64_t*)buf)); +} + +static inline void bswap24(uint8_t * buf) { + uint8_t tmp0 = buf[0]; + + buf[0] = buf[2]; + buf[2] = tmp0; +} + +static inline void bswap40(uint8_t * buf) { + uint8_t tmp0 = buf[0]; + uint8_t tmp1 = buf[1]; + + buf[0] = buf[4]; + buf[1] = buf[3]; + buf[3] = tmp1; + buf[4] = tmp0; +} + +static inline void bswap48(uint8_t * buf) { + uint8_t tmp0 = buf[0]; + uint8_t tmp1 = buf[1]; + uint8_t tmp2 = buf[2]; + + buf[0] = buf[5]; + buf[1] = buf[4]; + buf[2] = buf[3]; + buf[3] = tmp2; + buf[4] = tmp1; + buf[5] = tmp0; +} + +#endif // __BYTE_ORDER + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/Makefile b/lib/libucsi/mpeg/Makefile new file mode 100644 index 0000000..ace8808 --- /dev/null +++ b/lib/libucsi/mpeg/Makefile @@ -0,0 +1,65 @@ +# Makefile for linuxtv.org dvb-apps/lib/libucsi/mpeg + +.PHONY: sub-error-mpeg + +sub-error-mpeg: + $(error You can't use this makefile directly.) + +ifneq ($(lib_name),) + +objects += mpeg/cat_section.o \ + mpeg/metadata_section.o \ + mpeg/odsmt_section.o \ + mpeg/pat_section.o \ + mpeg/pmt_section.o \ + mpeg/tsdt_section.o + +sub-install += mpeg + +else + +includes = audio_stream_descriptor.h \ + ca_descriptor.h \ + cat_section.h \ + content_labelling_descriptor.h \ + copyright_descriptor.h \ + data_stream_alignment_descriptor.h \ + descriptor.h \ + external_es_id_descriptor.h \ + fmc_descriptor.h \ + fmxbuffer_size_descriptor.h \ + hierarchy_descriptor.h \ + ibp_descriptor.h \ + iod_descriptor.h \ + iso_639_language_descriptor.h \ + maximum_bitrate_descriptor.h \ + metadata_descriptor.h \ + metadata_pointer_descriptor.h \ + metadata_section.h \ + metadata_std_descriptor.h \ + mpeg4_audio_descriptor.h \ + mpeg4_video_descriptor.h \ + multiplex_buffer_descriptor.h \ + multiplex_buffer_utilization_descriptor.h \ + muxcode_descriptor.h \ + odsmt_section.h \ + pat_section.h \ + pmt_section.h \ + private_data_indicator_descriptor.h \ + registration_descriptor.h \ + section.h \ + sl_descriptor.h \ + smoothing_buffer_descriptor.h \ + std_descriptor.h \ + system_clock_descriptor.h \ + target_background_grid_descriptor.h \ + tsdt_section.h \ + types.h \ + video_stream_descriptor.h \ + video_window_descriptor.h + +include ../../../Make.rules + +lib_name = libucsi/mpeg + +endif diff --git a/lib/libucsi/mpeg/audio_stream_descriptor.h b/lib/libucsi/mpeg/audio_stream_descriptor.h new file mode 100644 index 0000000..7e6ea07 --- /dev/null +++ b/lib/libucsi/mpeg/audio_stream_descriptor.h @@ -0,0 +1,65 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_AUDIO_STREAM_DESCRIPTOR +#define _UCSI_MPEG_AUDIO_STREAM_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * mpeg_audio_stream_descriptor structure + */ +struct mpeg_audio_stream_descriptor { + struct descriptor d; + + EBIT5(uint8_t free_format_flag : 1; , + uint8_t id : 1; , + uint8_t layer : 2; , + uint8_t variable_rate_audio_indicator : 1; , + uint8_t reserved : 3; ); +} __ucsi_packed; + +/** + * Process an mpeg_audio_stream_descriptor. + * + * @param d Pointer to the generic descriptor structure. + * @return Pointer to the mpeg_audio_stream_descriptor structure, or NULL on error. + */ +static inline struct mpeg_audio_stream_descriptor* + mpeg_audio_stream_descriptor_codec(struct descriptor *d) +{ + if (d->len != (sizeof(struct mpeg_audio_stream_descriptor) - 2)) + return NULL; + + return (struct mpeg_audio_stream_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/ca_descriptor.h b/lib/libucsi/mpeg/ca_descriptor.h new file mode 100644 index 0000000..88a65dd --- /dev/null +++ b/lib/libucsi/mpeg/ca_descriptor.h @@ -0,0 +1,91 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_CA_DESCRIPTOR +#define _UCSI_MPEG_CA_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * mpeg_ca_descriptor structure + */ +struct mpeg_ca_descriptor { + struct descriptor d; + + uint16_t ca_system_id; + EBIT2(uint16_t reserved : 3; , + uint16_t ca_pid : 13; ); + /* uint8_t data[] */ +} __ucsi_packed; + +/** + * Process an mpeg_ca_descriptor. + * + * @param d Generic descriptor. + * @return Pointer to an mpeg_ca_descriptor, or NULL on error. + */ +static inline struct mpeg_ca_descriptor* + mpeg_ca_descriptor_codec(struct descriptor* d) +{ + if (d->len < (sizeof(struct mpeg_ca_descriptor) - 2)) + return NULL; + + bswap16((uint8_t*) d + 2); + bswap16((uint8_t*) d + 4); + + return (struct mpeg_ca_descriptor*) d; +} + +/** + * Accessor for pointer to data field of an mpeg_ca_descriptor. + * + * @param d The mpeg_ca_descriptor structure. + * @return Pointer to the field. + */ +static inline uint8_t * + mpeg_ca_descriptor_data(struct mpeg_ca_descriptor *d) +{ + return (uint8_t *) d + sizeof(struct mpeg_ca_descriptor); +} + +/** + * Determine length of data field of an mpeg_ca_descriptor. + * + * @param d The mpeg_ca_descriptor structure. + * @return Length of the field in bytes. + */ +static inline int + mpeg_ca_descriptor_data_length(struct mpeg_ca_descriptor *d) +{ + return d->d.len - 4; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/cat_section.c b/lib/libucsi/mpeg/cat_section.c new file mode 100644 index 0000000..8c974b8 --- /dev/null +++ b/lib/libucsi/mpeg/cat_section.c @@ -0,0 +1,34 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <libucsi/mpeg/cat_section.h> + +struct mpeg_cat_section * mpeg_cat_section_codec(struct section_ext * ext) +{ + uint8_t * buf = (uint8_t *)ext; + size_t pos = sizeof(struct section_ext); + + if (verify_descriptors(buf + pos, + section_ext_length(ext) - sizeof(struct mpeg_cat_section))) + return NULL; + + return (struct mpeg_cat_section *)ext; +} diff --git a/lib/libucsi/mpeg/cat_section.h b/lib/libucsi/mpeg/cat_section.h new file mode 100644 index 0000000..7ed34a3 --- /dev/null +++ b/lib/libucsi/mpeg/cat_section.h @@ -0,0 +1,94 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_CAT_SECTION_H +#define _UCSI_MPEG_CAT_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/section.h> + +/** + * mpeg_cat_section structure. + */ +struct mpeg_cat_section { + struct section_ext head; + + /* struct descriptor descriptors[] */ +} __ucsi_packed; + +/** + * Process an mpeg_cat_section. + * + * @param section The generic section_ext structure. + * @return Pointer to an mpeg_cat_section structure, or NULL on error. + */ +extern struct mpeg_cat_section *mpeg_cat_section_codec(struct section_ext *section); + +/** + * Convenience iterator for descriptors field of an mpeg_cat_section. + * + * @param cat The mpeg_cat_section pointer. + * @param pos Variable holding a pointer to the current descriptor. + */ +#define mpeg_cat_section_descriptors_for_each(cat, pos) \ + for ((pos) = mpeg_cat_section_descriptors_first(cat); \ + (pos); \ + (pos) = mpeg_cat_section_descriptors_next(cat, pos)) + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct descriptor * + mpeg_cat_section_descriptors_first(struct mpeg_cat_section *cat) +{ + size_t pos = sizeof(struct mpeg_cat_section); + + if (pos >= section_ext_length(&cat->head)) + return NULL; + + return (struct descriptor*)((uint8_t *) cat + pos); +} + + +static inline struct descriptor * + mpeg_cat_section_descriptors_next(struct mpeg_cat_section *cat, + struct descriptor* pos) +{ + return next_descriptor((uint8_t *) cat + sizeof(struct mpeg_cat_section), + section_ext_length(&cat->head) - sizeof(struct mpeg_cat_section), + pos); +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/content_labelling_descriptor.h b/lib/libucsi/mpeg/content_labelling_descriptor.h new file mode 100644 index 0000000..06738ab --- /dev/null +++ b/lib/libucsi/mpeg/content_labelling_descriptor.h @@ -0,0 +1,356 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_CONTENT_LABELLING_DESCRIPTOR +#define _UCSI_MPEG_CONTENT_LABELLING_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * Possible values for content_time_base_indicator. + */ +enum { + MPEG_CONTENT_TIME_BASE_STC = 0x01, + MPEG_CONTENT_TIME_BASE_NPT = 0x02, +}; + +/** + * mpeg_content_labelling_descriptor structure. + */ +struct mpeg_content_labelling_descriptor { + struct descriptor d; + + uint16_t metadata_application_format; + /* struct mpeg_content_labelling_descriptor_application_format_identifier id */ + /* struct mpeg_content_labelling_descriptor_flags flags */ + /* struct mpeg_content_labelling_descriptor_reference_id reference_id */ + /* struct mpeg_content_labelling_descriptor_time_base time_base */ + /* struct mpeg_content_labelling_descriptor_content_id content_id */ + /* struct mpeg_content_labelling_descriptor_time_base_association time_base_assoc */ + /* uint8_t private_data[] */ +} __ucsi_packed; + +/** + * id field of a content_labelling_descriptor. + */ +struct mpeg_content_labelling_descriptor_application_format_identifier { + uint32_t id; +} __ucsi_packed; + +/** + * Flags field of a content_labelling_descriptor + */ +struct mpeg_content_labelling_descriptor_flags { + EBIT3(uint8_t content_reference_id_record_flag : 1; , + uint8_t content_time_base_indicator : 4; , + uint8_t reserved : 3; ); +} __ucsi_packed; + +/** + * Reference_id field of a content_labelling_descriptor. + */ +struct mpeg_content_labelling_descriptor_reference_id { + uint8_t content_reference_id_record_length; + /* uint8_t data[] */ +} __ucsi_packed; + +/** + * time_base field of a content_labelling_descriptor. + */ +struct mpeg_content_labelling_descriptor_time_base { + EBIT2(uint64_t reserved_1 : 7; , + uint64_t content_time_base_value :33; ); + EBIT2(uint64_t reserved_2 : 7; , + uint64_t metadata_time_base_value :33; ); +} __ucsi_packed; + +/** + * content_id field of a content_labelling_descriptor. + */ +struct mpeg_content_labelling_descriptor_content_id { + EBIT2(uint8_t reserved : 1; , + uint8_t contentId : 7; ); +} __ucsi_packed; + +/** + * time_base_assoc field of a content_labelling_descriptor. + */ +struct mpeg_content_labelling_descriptor_time_base_association { + uint8_t time_base_association_data_length; + /* uint8_t data[] */ +} __ucsi_packed; + + + +/** + * Process an mpeg_content_labelling_descriptor. + * + * @param d Generic descriptor. + * @return Pointer to an mpeg_content_labelling_descriptor, or NULL on error. + */ +static inline struct mpeg_content_labelling_descriptor* + mpeg_content_labelling_descriptor_codec(struct descriptor* d) +{ + uint32_t pos = 2; + uint8_t *buf = (uint8_t*) d; + uint32_t len = d->len + 2; + struct mpeg_content_labelling_descriptor_flags *flags; + int id; + + if (len < sizeof(struct mpeg_content_labelling_descriptor)) + return NULL; + + bswap16(buf + pos); + id = *((uint16_t*) (buf+pos)); + pos += 2; + + if (id == 0xffff) { + if (len < (pos+4)) + return NULL; + bswap32(buf+pos); + pos += 4; + } + + if (len < (pos + sizeof(struct mpeg_content_labelling_descriptor_flags))) + return NULL; + flags = (struct mpeg_content_labelling_descriptor_flags*) (buf+pos); + pos += sizeof(struct mpeg_content_labelling_descriptor_flags); + + if (flags->content_reference_id_record_flag == 1) { + if (len < (pos+1)) + return NULL; + if (len < (pos+1+buf[pos])) + return NULL; + pos += 1 + buf[pos]; + } + + if ((flags->content_time_base_indicator == 1) || + (flags->content_time_base_indicator == 2)) { + if (len < (pos + sizeof(struct mpeg_content_labelling_descriptor_time_base))) + return NULL; + bswap40(buf+pos); + bswap40(buf+pos+5); + pos += sizeof(struct mpeg_content_labelling_descriptor_time_base); + } + + if (flags->content_time_base_indicator == 2) { + if (len < (pos + sizeof(struct mpeg_content_labelling_descriptor_content_id))) + return NULL; + pos += sizeof(struct mpeg_content_labelling_descriptor_content_id); + } + + if (flags->content_time_base_indicator > 2) { + if (len < (pos+1)) + return NULL; + if (len < (pos+1+buf[pos])) + return NULL; + pos += 1 + buf[pos]; + } + + if (len < pos) + return NULL; + + return (struct mpeg_content_labelling_descriptor*) d; +} + +/** + * Accessor for pointer to id field of an mpeg_content_labelling_descriptor. + * + * @param d The mpeg_content_labelling_descriptor structure. + * @return The pointer, or NULL on error. + */ +static inline struct mpeg_content_labelling_descriptor_application_format_identifier* + mpeg_content_labelling_descriptor_id(struct mpeg_content_labelling_descriptor *d) +{ + uint8_t *buf = (uint8_t*) d; + + if (d->metadata_application_format != 0xffff) + return NULL; + return (struct mpeg_content_labelling_descriptor_application_format_identifier*) + (buf + sizeof(struct mpeg_content_labelling_descriptor)); +} + +/** + * Accessor for pointer to flags field of an mpeg_content_labelling_descriptor. + * + * @param d The mpeg_content_labelling_descriptor structure. + * @return The pointer, or NULL on error. + */ +static inline struct mpeg_content_labelling_descriptor_flags* + mpeg_content_labelling_descriptor_flags(struct mpeg_content_labelling_descriptor *d) +{ + uint8_t *buf = (uint8_t*) d + sizeof(struct mpeg_content_labelling_descriptor); + + if (d->metadata_application_format != 0xffff) + buf += 4; + + return (struct mpeg_content_labelling_descriptor_flags *) buf; +} + +/** + * Accessor for reference_id field of an mpeg_content_labelling_descriptor. + * + * @param flags Pointer to the mpeg_content_labelling_descriptor_flags. + * @return Pointer to the field, or NULL on error. + */ +static inline struct mpeg_content_labelling_descriptor_reference_id* + mpeg_content_labelling_descriptor_reference_id(struct mpeg_content_labelling_descriptor_flags *flags) +{ + uint8_t *buf = (uint8_t*) flags + sizeof(struct mpeg_content_labelling_descriptor_flags); + + if (flags->content_reference_id_record_flag != 1) + return NULL; + + return (struct mpeg_content_labelling_descriptor_reference_id *) buf; +} + +/** + * Accessor for data field of an mpeg_content_reference_id. + * + * @param d The mpeg_content_reference_id structure. + * @return Pointer to the field. + */ +static inline uint8_t* + mpeg_content_reference_id_data(struct mpeg_content_labelling_descriptor_reference_id *d) +{ + return (uint8_t*) d + sizeof(struct mpeg_content_labelling_descriptor_reference_id); +} + +/** + * Accessor for time_base field of an mpeg_content_labelling_descriptor. + * + * @param flags Pointer to the mpeg_content_labelling_descriptor_flags. + * @return Pointer to the field, or NULL on error. + */ +static inline struct mpeg_content_labelling_descriptor_time_base* + mpeg_content_labelling_descriptor_time_base(struct mpeg_content_labelling_descriptor_flags *flags) +{ + uint8_t *buf = (uint8_t*) flags + sizeof(struct mpeg_content_labelling_descriptor_flags); + + if ((flags->content_time_base_indicator!=1) && (flags->content_time_base_indicator!=2)) + return NULL; + + if (flags->content_reference_id_record_flag == 1) + buf += 1 + buf[1]; + + return (struct mpeg_content_labelling_descriptor_time_base *) buf; +} + +/** + * Accessor for content_id field of an mpeg_content_labelling_descriptor. + * + * @param flags Pointer to the mpeg_content_labelling_descriptor_flags. + * @return Pointer to the field, or NULL on error. + */ +static inline struct mpeg_content_labelling_descriptor_content_id* + mpeg_content_labelling_descriptor_content_id(struct mpeg_content_labelling_descriptor_flags *flags) +{ + uint8_t *buf = (uint8_t*) flags + sizeof(struct mpeg_content_labelling_descriptor_flags); + + if (flags->content_time_base_indicator!=2) + return NULL; + + if (flags->content_reference_id_record_flag == 1) + buf += 1 + buf[1]; + if ((flags->content_time_base_indicator==1) || (flags->content_time_base_indicator==2)) + buf += sizeof(struct mpeg_content_labelling_descriptor_time_base); + + return (struct mpeg_content_labelling_descriptor_content_id *) buf; +} + +/** + * Accessor for time_base_association field of an mpeg_content_labelling_descriptor. + * + * @param flags Pointer to the mpeg_content_labelling_descriptor_flags. + * @return Pointer to the field, or NULL on error. + */ +static inline struct mpeg_content_labelling_descriptor_time_base_association* + mpeg_content_labelling_descriptor_time_base_assoc(struct mpeg_content_labelling_descriptor_flags *flags) +{ + uint8_t *buf = (uint8_t*) flags + sizeof(struct mpeg_content_labelling_descriptor_flags); + + if (flags->content_time_base_indicator<3) + return NULL; + + if (flags->content_reference_id_record_flag == 1) + buf += 1 + buf[1]; + if ((flags->content_time_base_indicator==1) || (flags->content_time_base_indicator==2)) + buf += sizeof(struct mpeg_content_labelling_descriptor_time_base); + if (flags->content_time_base_indicator==2) + buf += sizeof(struct mpeg_content_labelling_descriptor_content_id); + + return (struct mpeg_content_labelling_descriptor_time_base_association *) buf; +} + +/** + * Accessor for data field of an mpeg_time_base_association. + * + * @param d The mpeg_time_base_association structure. + * @return Pointer to the field. + */ +static inline uint8_t* + mpeg_time_base_association_data(struct mpeg_content_labelling_descriptor_time_base_association *d) +{ + return (uint8_t*) d + sizeof(struct mpeg_content_labelling_descriptor_time_base_association); +} + + +/** + * Accessor for private_data field of an mpeg_content_labelling_descriptor. + * + * @param d The mpeg_content_labelling_descriptor structure. + * @param flags Pointer to the mpeg_content_labelling_descriptor_flags. + * @param length Where the number of bytes in the field should be stored. + * @return Pointer to the field. + */ +static inline uint8_t* + mpeg_content_labelling_descriptor_data(struct mpeg_content_labelling_descriptor *d, + struct mpeg_content_labelling_descriptor_flags *flags, + int *length) +{ + uint8_t *buf = (uint8_t*) flags + sizeof(struct mpeg_content_labelling_descriptor_flags); + uint8_t *end = (uint8_t*) d + d->d.len + 2; + + if (flags->content_reference_id_record_flag == 1) + buf += 1 + buf[1]; + if ((flags->content_time_base_indicator==1) || (flags->content_time_base_indicator==2)) + buf += sizeof(struct mpeg_content_labelling_descriptor_time_base); + if (flags->content_time_base_indicator==2) + buf += sizeof(struct mpeg_content_labelling_descriptor_content_id); + if (flags->content_time_base_indicator<3) + buf += 1 + buf[1]; + + *length = end - buf; + + return buf; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/copyright_descriptor.h b/lib/libucsi/mpeg/copyright_descriptor.h new file mode 100644 index 0000000..5991fe9 --- /dev/null +++ b/lib/libucsi/mpeg/copyright_descriptor.h @@ -0,0 +1,89 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_COPYRIGHT_DESCRIPTOR +#define _UCSI_MPEG_COPYRIGHT_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * mpeg_copyright_descriptor structure. + */ +struct mpeg_copyright_descriptor { + struct descriptor d; + + uint32_t copyright_identifier; + /* uint8_t data[] */ +} __ucsi_packed; + +/** + * Process an mpeg_copyright_descriptor. + * + * @param d Generic descriptor. + * @return mpeg_copyright_descriptor pointer, or NULL on error. + */ +static inline struct mpeg_copyright_descriptor* + mpeg_copyright_descriptor_codec(struct descriptor* d) +{ + if (d->len < (sizeof(struct mpeg_copyright_descriptor) - 2)) + return NULL; + + bswap32((uint8_t*) d + 2); + + return (struct mpeg_copyright_descriptor*) d; +} + +/** + * Retrieve pointer to data field of an mpeg_copyright_descriptor. + * + * @param d mpeg_copyright_descriptor pointer. + * @return Pointer to the field. + */ +static inline uint8_t * + mpeg_copyright_descriptor_data(struct mpeg_copyright_descriptor *d) +{ + return (uint8_t *) d + sizeof(struct mpeg_copyright_descriptor); +} + + +/** + * Determine length of the data field of an mpeg_copyright_descriptor. + * + * @param d mpeg_copyright_descriptor pointer. + * @return Length of field in bytes. + */ +static inline int + mpeg_copyright_descriptor_data_length(struct mpeg_copyright_descriptor *d) +{ + return d->d.len - 4; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/data_stream_alignment_descriptor.h b/lib/libucsi/mpeg/data_stream_alignment_descriptor.h new file mode 100644 index 0000000..887495f --- /dev/null +++ b/lib/libucsi/mpeg/data_stream_alignment_descriptor.h @@ -0,0 +1,73 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_DATA_STREAM_ALIGNMENT_DESCRIPTOR +#define _UCSI_MPEG_DATA_STREAM_ALIGNMENT_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * Possible values for alignment_type. + */ +enum { + MPEG_DATA_STREAM_ALIGNMENT_VIDEO_SLICE_OR_AU = 0x01, + MPEG_DATA_STREAM_ALIGNMENT_VIDEO_AU = 0x02, + MPEG_DATA_STREAM_ALIGNMENT_VIDEO_GOP_OR_SEQ = 0x03, + MPEG_DATA_STREAM_ALIGNMENT_VIDEO_SEQ = 0x04, + + MPEG_DATA_STREAM_ALIGNMENT_AUDIO_SYNC_WORD = 0x01, +}; + +/** + * mpeg_data_stream_alignment_descriptor structure. + */ +struct mpeg_data_stream_alignment_descriptor { + struct descriptor d; + + uint8_t alignment_type; +} __ucsi_packed; + +/** + * Process an mpeg_data_stream_alignment_descriptor. + * + * @param d Pointer to generic descriptor structure. + * @return Pointer to mpeg_data_stream_alignment_descriptor, or NULL on error. + */ +static inline struct mpeg_data_stream_alignment_descriptor* + mpeg_data_stream_alignment_descriptor_codec(struct descriptor* d) +{ + if (d->len != (sizeof(struct mpeg_data_stream_alignment_descriptor) - 2)) + return NULL; + + return (struct mpeg_data_stream_alignment_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/descriptor.h b/lib/libucsi/mpeg/descriptor.h new file mode 100644 index 0000000..c32775f --- /dev/null +++ b/lib/libucsi/mpeg/descriptor.h @@ -0,0 +1,102 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_DESCRIPTOR_H +#define _UCSI_MPEG_DESCRIPTOR_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/mpeg/mpeg4_audio_descriptor.h> +#include <libucsi/mpeg/mpeg4_video_descriptor.h> +#include <libucsi/mpeg/audio_stream_descriptor.h> +#include <libucsi/mpeg/ca_descriptor.h> +#include <libucsi/mpeg/content_labelling_descriptor.h> +#include <libucsi/mpeg/copyright_descriptor.h> +#include <libucsi/mpeg/data_stream_alignment_descriptor.h> +#include <libucsi/mpeg/external_es_id_descriptor.h> +#include <libucsi/mpeg/fmc_descriptor.h> +#include <libucsi/mpeg/fmxbuffer_size_descriptor.h> +#include <libucsi/mpeg/hierarchy_descriptor.h> +#include <libucsi/mpeg/ibp_descriptor.h> +#include <libucsi/mpeg/iod_descriptor.h> +#include <libucsi/mpeg/iso_639_language_descriptor.h> +#include <libucsi/mpeg/maximum_bitrate_descriptor.h> +#include <libucsi/mpeg/metadata_descriptor.h> +#include <libucsi/mpeg/metadata_pointer_descriptor.h> +#include <libucsi/mpeg/metadata_std_descriptor.h> +#include <libucsi/mpeg/multiplex_buffer_descriptor.h> +#include <libucsi/mpeg/multiplex_buffer_utilization_descriptor.h> +#include <libucsi/mpeg/muxcode_descriptor.h> +#include <libucsi/mpeg/private_data_indicator_descriptor.h> +#include <libucsi/mpeg/registration_descriptor.h> +#include <libucsi/mpeg/sl_descriptor.h> +#include <libucsi/mpeg/smoothing_buffer_descriptor.h> +#include <libucsi/mpeg/std_descriptor.h> +#include <libucsi/mpeg/system_clock_descriptor.h> +#include <libucsi/mpeg/target_background_grid_descriptor.h> +#include <libucsi/mpeg/video_stream_descriptor.h> +#include <libucsi/mpeg/video_window_descriptor.h> +#include <libucsi/endianops.h> + +/** + * Enumeration of MPEG descriptor tags. + */ +enum mpeg_descriptor_tag { + dtag_mpeg_video_stream = 0x02, + dtag_mpeg_audio_stream = 0x03, + dtag_mpeg_hierarchy = 0x04, + dtag_mpeg_registration = 0x05, + dtag_mpeg_data_stream_alignment = 0x06, + dtag_mpeg_target_background_grid = 0x07, + dtag_mpeg_video_window = 0x08, + dtag_mpeg_ca = 0x09, + dtag_mpeg_iso_639_language = 0x0a, + dtag_mpeg_system_clock = 0x0b, + dtag_mpeg_multiplex_buffer_utilization = 0x0c, + dtag_mpeg_copyright = 0x0d, + dtag_mpeg_maximum_bitrate = 0x0e, + dtag_mpeg_private_data_indicator = 0x0f, + dtag_mpeg_smoothing_buffer = 0x10, + dtag_mpeg_std = 0x11, + dtag_mpeg_ibp = 0x12, + dtag_mpeg_4_video = 0x1b, + dtag_mpeg_4_audio = 0x1c, + dtag_mpeg_iod = 0x1d, + dtag_mpeg_sl = 0x1e, + dtag_mpeg_fmc = 0x1f, + dtag_mpeg_external_es_id = 0x20, + dtag_mpeg_muxcode = 0x21, + dtag_mpeg_fmxbuffer_size = 0x22, + dtag_mpeg_multiplex_buffer = 0x23, + dtag_mpeg_content_labelling = 0x24, + dtag_mpeg_metadata_pointer = 0x25, + dtag_mpeg_metadata = 0x26, + dtag_mpeg_metadata_std = 0x27, +}; + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/external_es_id_descriptor.h b/lib/libucsi/mpeg/external_es_id_descriptor.h new file mode 100644 index 0000000..3aa3237 --- /dev/null +++ b/lib/libucsi/mpeg/external_es_id_descriptor.h @@ -0,0 +1,63 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_EXTERNAL_ES_ID_DESCRIPTOR +#define _UCSI_MPEG_EXTERNAL_ES_ID_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * mpeg_external_es_id_descriptor structure. + */ +struct mpeg_external_es_id_descriptor { + struct descriptor d; + + uint16_t external_es_id; +} __ucsi_packed; + +/** + * Process an mpeg_external_es_id_descriptor structure. + * + * @param d Generic descriptor structure. + * @return mpeg_external_es_id_descriptor pointer, or NULL on error. + */ +static inline struct mpeg_external_es_id_descriptor* + mpeg_external_es_id_descriptor_codec(struct descriptor* d) +{ + if (d->len != (sizeof(struct mpeg_external_es_id_descriptor) - 2)) + return NULL; + + bswap16((uint8_t*) d + 2); + + return (struct mpeg_external_es_id_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/fmc_descriptor.h b/lib/libucsi/mpeg/fmc_descriptor.h new file mode 100644 index 0000000..5a5bed2 --- /dev/null +++ b/lib/libucsi/mpeg/fmc_descriptor.h @@ -0,0 +1,122 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_FMC_DESCRIPTOR +#define _UCSI_MPEG_FMC_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * mpeg_fmc_descriptor structure. + */ +struct mpeg_fmc_descriptor { + struct descriptor d; + + /* struct mpeg_flex_mux muxes[] */ +} __ucsi_packed; + +/** + * An entry in the muxes field of an mpeg_fmc_descriptor structure. + */ +struct mpeg_flex_mux { + uint16_t es_id; + uint8_t flex_mux_channel; +} __ucsi_packed; + +/** + * Process an mpeg_fmc_descriptor structure. + * + * @param d Generic descriptor structure. + * @return Pointer to an mpeg_fmc_descriptor structure, or NULL on error. + */ +static inline struct mpeg_fmc_descriptor* + mpeg_fmc_descriptor_codec(struct descriptor* d) +{ + uint8_t* buf = (uint8_t*) d + 2; + int pos = 0; + int len = d->len; + + if (len % sizeof(struct mpeg_flex_mux)) + return NULL; + + while(pos < len) { + bswap16(buf+pos); + pos += sizeof(struct mpeg_flex_mux); + } + + return (struct mpeg_fmc_descriptor*) d; +} + +/** + * Convenience iterator for the muxes field of an mpeg_fmc_descriptor structure. + * + * @param d Generic descriptor structure. + * @param pos Variable holding a pointer to the the current entry within the muxes field. + */ +#define mpeg_fmc_descriptor_muxes_for_each(d, pos) \ + for ((pos) = mpeg_fmc_descriptor_muxes_first(d); \ + (pos); \ + (pos) = mpeg_fmc_descriptor_muxes_next(d, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct mpeg_flex_mux* + mpeg_fmc_descriptor_muxes_first(struct mpeg_fmc_descriptor *d) +{ + if (d->d.len < sizeof(struct mpeg_flex_mux)) + return NULL; + + return (struct mpeg_flex_mux *) + ((uint8_t*) d + sizeof(struct mpeg_fmc_descriptor)); +} + +static inline struct mpeg_flex_mux* + mpeg_fmc_descriptor_muxes_next(struct mpeg_fmc_descriptor *d, + struct mpeg_flex_mux *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + sizeof(struct mpeg_flex_mux); + + if (next >= end) + return NULL; + + return (struct mpeg_flex_mux *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/fmxbuffer_size_descriptor.h b/lib/libucsi/mpeg/fmxbuffer_size_descriptor.h new file mode 100644 index 0000000..74f643c --- /dev/null +++ b/lib/libucsi/mpeg/fmxbuffer_size_descriptor.h @@ -0,0 +1,83 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_FMXBUFFER_SIZE_DESCRIPTOR +#define _UCSI_MPEG_FMXBUFFER_SIZE_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + + +/** + * mpeg_fmxbuffer_size_descriptor structure. + */ +struct mpeg_fmxbuffer_size_descriptor { + struct descriptor d; + + /* uint8_t descriptors[] */ +} __ucsi_packed; + +/** + * Process an mpeg_fmxbuffer_size_descriptor structure. + * + * @param d Pointer to a generic descriptor structure. + * @return Pointer to an mpeg_fmxbuffer_size_descriptor structure, or NULL on error. + */ +static inline struct mpeg_fmxbuffer_size_descriptor* + mpeg_fmxbuffer_size_descriptor_codec(struct descriptor* d) +{ + return (struct mpeg_fmxbuffer_size_descriptor*) d; +} + +/** + * Retrieve pointer to descriptors field of mpeg_fmxbuffer_size_descriptor structure. + * + * @param d mpeg_fmxbuffer_size_descriptor structure pointer. + * @return Pointer to the descriptors. + */ +static inline uint8_t * + mpeg_fmxbuffer_size_descriptor_descriptors(struct mpeg_fmxbuffer_size_descriptor *d) +{ + return (uint8_t *) d + sizeof(struct mpeg_fmxbuffer_size_descriptor); +} + +/** + * Calculate the length of the descriptors field of an mpeg_fmxbuffer_size_descriptor structure. + * + * @param d mpeg_fmxbuffer_size_descriptor structure pointer. + * @return Length of descriptors in bytes. + */ +static inline int + mpeg_fmxbuffer_size_descriptor_descriptors_length(struct mpeg_fmxbuffer_size_descriptor *d) +{ + return d->d.len; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/hierarchy_descriptor.h b/lib/libucsi/mpeg/hierarchy_descriptor.h new file mode 100644 index 0000000..a38539d --- /dev/null +++ b/lib/libucsi/mpeg/hierarchy_descriptor.h @@ -0,0 +1,83 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_HIERARCHY_DESCRIPTOR +#define _UCSI_MPEG_HIERARCHY_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * Hierarchy type values. + */ +enum { + MPEG_HIERARCHY_TYPE_ISO13818_2_SPATIAL_SCALABILITY = 0x01, + MPEG_HIERARCHY_TYPE_ISO13818_2_SNR_SCALABILITY = 0x02, + MPEG_HIERARCHY_TYPE_ISO13818_2_TEMPORAL_SCALABILITY = 0x03, + MPEG_HIERARCHY_TYPE_ISO13818_2_DATA_PARTITIONING = 0x04, + MPEG_HIERARCHY_TYPE_ISO13818_3_EXTENSION_BITSTREAM = 0x05, + MPEG_HIERARCHY_TYPE_ISO13818_1_PRIVATE_BITSTREAM = 0x06, + MPEG_HIERARCHY_TYPE_ISO13818_2_MULTI_VIEW_PROFILE = 0x07, + MPEG_HIERARCHY_TYPE_BASE_LAYER = 0x0f, +}; + + +/** + * mpeg_hierarchy_descriptor structure. + */ +struct mpeg_hierarchy_descriptor { + struct descriptor d; + + EBIT2(uint8_t reserved_1 : 4; , + uint8_t hierarchy_type : 4; ); + EBIT2(uint8_t reserved_2 : 2; , + uint8_t hierarchy_layer_index : 6; ); + EBIT2(uint8_t reserved_3 : 2; , + uint8_t hierarchy_embedded_layer_index : 6; ); + EBIT2(uint8_t reserved_4 : 2; , + uint8_t hierarchy_channel : 6; ); +} __ucsi_packed; + +/** + * Process an mpeg_hierarchy_descriptor. + * + * @param d Generic descriptor structure. + * @return Pointer to mpeg_hierarchy_descriptor structure, or NULL on error. + */ +static inline struct mpeg_hierarchy_descriptor* + mpeg_hierarchy_descriptor_codec(struct descriptor* d) +{ + if (d->len != (sizeof(struct mpeg_hierarchy_descriptor) - 2)) + return NULL; + + return (struct mpeg_hierarchy_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/ibp_descriptor.h b/lib/libucsi/mpeg/ibp_descriptor.h new file mode 100644 index 0000000..e82780a --- /dev/null +++ b/lib/libucsi/mpeg/ibp_descriptor.h @@ -0,0 +1,65 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_IBP_DESCRIPTOR +#define _UCSI_MPEG_IBP_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * mpeg_ibp_descriptor structure. + */ +struct mpeg_ibp_descriptor { + struct descriptor d; + + EBIT3(uint16_t closed_gop_flag : 1; , + uint16_t identical_gop_flag : 1; , + uint16_t max_gop_length : 14; ); +} __ucsi_packed; + +/** + * Process an mpeg_ibp_descriptor structure. + * + * @param d Generic descriptor structure. + * @return Pointer to the mpeg_ibp_descriptor structure, or NULL on error. + */ +static inline struct mpeg_ibp_descriptor* + mpeg_ibp_descriptor_codec(struct descriptor* d) +{ + if (d->len != (sizeof(struct mpeg_ibp_descriptor) - 2)) + return NULL; + + bswap16((uint8_t*) d + 2); + + return (struct mpeg_ibp_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/iod_descriptor.h b/lib/libucsi/mpeg/iod_descriptor.h new file mode 100644 index 0000000..61de153 --- /dev/null +++ b/lib/libucsi/mpeg/iod_descriptor.h @@ -0,0 +1,87 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_IOD_DESCRIPTOR +#define _UCSI_MPEG_IOD_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * mpeg_iod_descriptor structure. + */ +struct mpeg_iod_descriptor { + struct descriptor d; + + uint8_t scope_of_iod_label; + uint8_t iod_label; + /* uint8_t iod[] */ +} __ucsi_packed; + +/** + * Process an mpeg_iod_descriptor. + * + * @param d Generic descriptor structure. + * @return Pointer to an mpeg_iod_descriptor structure, or NULL on error. + */ +static inline struct mpeg_iod_descriptor* + mpeg_iod_descriptor_codec(struct descriptor* d) +{ + if (d->len < (sizeof(struct mpeg_iod_descriptor) - 2)) + return NULL; + + return (struct mpeg_iod_descriptor*) d; +} + +/** + * Retrieve pointer to iod field of an mpeg_iod_descriptor structure. + * + * @param d Pointer to mpeg_iod_descriptor structure. + * @return Pointer to the iod field. + */ +static inline uint8_t * + mpeg_iod_descriptor_iod(struct mpeg_iod_descriptor *d) +{ + return (uint8_t *) d + sizeof(struct mpeg_iod_descriptor); +} + +/** + * Calculate the length of the iod field of an mpeg_iod_descriptor structure. + * + * @param d Pointer to mpeg_iod_descriptor structure. + * @return The number of bytes. + */ +static inline int + mpeg_iod_descriptor_iod_length(struct mpeg_iod_descriptor *d) +{ + return d->d.len - 2; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/iso_639_language_descriptor.h b/lib/libucsi/mpeg/iso_639_language_descriptor.h new file mode 100644 index 0000000..5b5aac0 --- /dev/null +++ b/lib/libucsi/mpeg/iso_639_language_descriptor.h @@ -0,0 +1,124 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_ISO_639_LANGUAGE_DESCRIPTOR +#define _UCSI_MPEG_ISO_639_LANGUAGE_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +/** + * Possible values for audio_type. + */ +enum { + MPEG_AUDIO_TYPE_CLEAN_EFFECTS = 0x01, + MPEG_AUDIO_TYPE_HEARING_IMPAIRED = 0x02, + MPEG_AUDIO_TYPE_VISUAL_IMPAIRED_COMMENTARY = 0x03, +}; + +/** + * mpeg_iso_639_language_descriptor structure. + */ +struct mpeg_iso_639_language_descriptor { + struct descriptor d; + + /* struct mpeg_iso_639_language_code languages[] */ +} __ucsi_packed; + +/** + * An entry in the mpeg_iso_639_language_descriptor languages field. + */ +struct mpeg_iso_639_language_code { + iso639lang_t language_code; + uint8_t audio_type; +} __ucsi_packed; + +/** + * Process an mpeg_iso_639_language_descriptor. + * + * @param d Generic descriptor structure. + * @return Pointer to an mpeg_iso_639_language_descriptor structure, or NULL + * on error. + */ +static inline struct mpeg_iso_639_language_descriptor* + mpeg_iso_639_language_descriptor_codec(struct descriptor* d) +{ + if (d->len % sizeof(struct mpeg_iso_639_language_code)) + return NULL; + + return (struct mpeg_iso_639_language_descriptor*) d; +} + +/** + * Convenience iterator for the languages field of an mpeg_iso_639_language_descriptor + * + * @param d Pointer to the mpeg_iso_639_language_descriptor structure. + * @param pos Variable holding a pointer to the current entry. + */ +#define mpeg_iso_639_language_descriptor_languages_for_each(_d, _pos) \ + for ((_pos) = mpeg_iso_639_language_descriptor_languages_first(_d); \ + (_pos); \ + (_pos) = mpeg_iso_639_language_descriptor_languages_next(_d, _pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct mpeg_iso_639_language_code* + mpeg_iso_639_language_descriptor_languages_first(struct mpeg_iso_639_language_descriptor *d) +{ + if (d->d.len < sizeof(struct mpeg_iso_639_language_code)) + return NULL; + + return (struct mpeg_iso_639_language_code *) + ((uint8_t*) d + sizeof(struct mpeg_iso_639_language_descriptor)); +} + +static inline struct mpeg_iso_639_language_code* + mpeg_iso_639_language_descriptor_languages_next(struct mpeg_iso_639_language_descriptor *d, + struct mpeg_iso_639_language_code *pos) +{ + uint8_t *end = (uint8_t*) d + 2 + d->d.len; + uint8_t *next = (uint8_t *) pos + sizeof(struct mpeg_iso_639_language_code); + + if (next >= end) + return NULL; + + return (struct mpeg_iso_639_language_code *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/maximum_bitrate_descriptor.h b/lib/libucsi/mpeg/maximum_bitrate_descriptor.h new file mode 100644 index 0000000..e0bcddb --- /dev/null +++ b/lib/libucsi/mpeg/maximum_bitrate_descriptor.h @@ -0,0 +1,64 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_MAXIMUM_BITRATE_DESCRIPTOR +#define _UCSI_MPEG_MAXIMUM_BITRATE_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * mpeg_maximum_bitrate_descriptor structure. + */ +struct mpeg_maximum_bitrate_descriptor { + struct descriptor d; + + EBIT2(uint32_t reserved : 2; , + uint32_t maximum_bitrate : 22; ); +} __ucsi_packed; + +/** + * Process an mpeg_maximum_bitrate_descriptor. + * + * @param d Pointer to generic descriptor structure. + * @return Pointer to mpeg_maximum_bitrate_descriptor, or NULL on error. + */ +static inline struct mpeg_maximum_bitrate_descriptor* + mpeg_maximum_bitrate_descriptor_codec(struct descriptor* d) +{ + if (d->len != (sizeof(struct mpeg_maximum_bitrate_descriptor) - 2)) + return NULL; + + bswap24((uint8_t*) d + 2); + + return (struct mpeg_maximum_bitrate_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/metadata_descriptor.h b/lib/libucsi/mpeg/metadata_descriptor.h new file mode 100644 index 0000000..5b91e05 --- /dev/null +++ b/lib/libucsi/mpeg/metadata_descriptor.h @@ -0,0 +1,472 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_METADATA_DESCRIPTOR +#define _UCSI_MPEG_METADATA_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * Values for the decoder_config_flags field. + */ +enum { + MPEG_DECODER_CONFIG_NONE = 0x00, + MPEG_DECODER_CONFIG_IN_DECODER_CONFIG = 0x01, + MPEG_DECODER_CONFIG_SAME_METADATA_SERVICE = 0x02, + MPEG_DECODER_CONFIG_DSMCC = 0x03, + MPEG_DECODER_CONFIG_SAME_PROGRAM = 0x04, +}; + +/** + * mpeg_metadata_descriptor structure. + */ +struct mpeg_metadata_descriptor { + struct descriptor d; + + uint16_t metadata_application_format; + /* struct mpeg_metadata_descriptor_application_format_identifier appid */ + /* uint8_t metadata_format */ + /* struct mpeg_metadata_descriptor_format_identifier formid */ + /* struct mpeg_metadata_descriptor_flags flags */ + /* struct mpeg_metadata_descriptor_service_identifier service_identifier */ + /* struct mpeg_metadata_descriptor_decoder_config decoder_config */ + /* struct mpeg_metadata_descriptor_decoder_config_id_record decoder_config_id_record */ + /* struct mpeg_metadata_descriptor_decoder_config_service_id decoder_config_service_id */ + /* struct mpeg_metadata_descriptor_decoder_config_reserved decoder_config_reserved */ + /* uint8_t private_data[] */ +} __ucsi_packed; + +/** + * appid field of a metadata_descriptor. + */ +struct mpeg_metadata_descriptor_application_format_identifier { + uint32_t id; +} __ucsi_packed; + +/** + * formid field of a metadata_descriptor. + */ +struct mpeg_metadata_descriptor_format_identifier { + uint32_t id; +} __ucsi_packed; + +/** + * Flags field of a metadata_descriptor + */ +struct mpeg_metadata_descriptor_flags { + uint8_t metadata_service_id; + EBIT3(uint8_t decoder_config_flags : 3; , + uint8_t dsm_cc_flag : 1; , + uint8_t reserved : 4; ); +} __ucsi_packed; + +/** + * service_identifier field of a metadata_descriptor. + */ +struct mpeg_metadata_descriptor_service_identifier { + uint8_t service_identification_length; + /* uint8_t data[] */ +} __ucsi_packed; + +/** + * decoder_config field of a metadata_descriptor. + */ +struct mpeg_metadata_descriptor_decoder_config { + uint8_t decoder_config_length; + /* uint8_t data[] */ +} __ucsi_packed; + +/** + * decoder_config_id_record field of a metadata_descriptor. + */ +struct mpeg_metadata_descriptor_decoder_config_id_record { + uint8_t decoder_config_id_record_length; + /* uint8_t data[] */ +} __ucsi_packed; + +/** + * decoder_config_service_id field of a metadata_descriptor. + */ +struct mpeg_metadata_descriptor_decoder_config_service_id { + uint8_t decoder_config_metadata_service_id; +} __ucsi_packed; + +/** + * decoder_config_reserved field of a metadata_descriptor. + */ +struct mpeg_metadata_descriptor_decoder_config_reserved { + uint8_t reserved_data_length; + /* uint8_t data[] */ +} __ucsi_packed; + + + + +/** + * Process an mpeg_metadata_descriptor. + * + * @param d Generic descriptor. + * @return Pointer to an mpeg_metadata_descriptor, or NULL on error. + */ +static inline struct mpeg_metadata_descriptor* + mpeg_metadata_descriptor_codec(struct descriptor* d) +{ + uint32_t pos = 2; + uint8_t *buf = (uint8_t*) d; + uint32_t len = d->len + 2; + struct mpeg_metadata_descriptor_flags *flags; + int id; + + if (len < sizeof(struct mpeg_metadata_descriptor)) + return NULL; + + bswap16(buf + pos); + id = *((uint16_t*) (buf+pos)); + pos += 2; + + if (id == 0xffff) { + if (len < (pos+4)) + return NULL; + bswap32(buf+pos); + pos += 4; + } + + if (len < (pos+1)) + return NULL; + + id = buf[pos]; + pos++; + if (id == 0xff) { + if (len < (pos+4)) + return NULL; + bswap32(buf+pos); + pos += 4; + } + + if (len < (pos + sizeof(struct mpeg_metadata_descriptor_flags))) + return NULL; + flags = (struct mpeg_metadata_descriptor_flags*) (buf+pos); + pos += sizeof(struct mpeg_metadata_descriptor_flags); + + if (flags->dsm_cc_flag == 1) { + if (len < (pos+1)) + return NULL; + if (len < (pos+1+buf[pos])) + return NULL; + pos += 1 + buf[pos]; + } + + if (flags->decoder_config_flags == 1) { + if (len < (pos+1)) + return NULL; + if (len < (pos+1+buf[pos])) + return NULL; + pos += 1 + buf[pos]; + } + + if (flags->decoder_config_flags == 3) { + if (len < (pos+1)) + return NULL; + if (len < (pos+1+buf[pos])) + return NULL; + pos += 1 + buf[pos]; + } + + if (flags->decoder_config_flags == 4) { + if (len < (pos+1)) + return NULL; + pos++; + } + + if ((flags->decoder_config_flags == 5) || + (flags->decoder_config_flags == 6)) { + if (len < (pos+1)) + return NULL; + if (len < (pos+1+buf[pos])) + return NULL; + pos += 1 + buf[pos]; + } + + if (len < pos) + return NULL; + + return (struct mpeg_metadata_descriptor*) d; +} + +/** + * Accessor for pointer to appid field of an mpeg_metadata_descriptor. + * + * @param d The mpeg_metadata_descriptor structure. + * @return The pointer, or NULL on error. + */ +static inline struct mpeg_metadata_descriptor_application_format_identifier* + mpeg_metadata_descriptor_appid(struct mpeg_metadata_descriptor *d) +{ + uint8_t *buf = (uint8_t*) d + sizeof(struct mpeg_metadata_descriptor); + + if (d->metadata_application_format != 0xffff) + return NULL; + return (struct mpeg_metadata_descriptor_application_format_identifier*) buf; +} + +/** + * Accessor for metadata_format field of an mpeg_metadata_descriptor. + * + * @param d The mpeg_metadata_descriptor structure. + * @return The pointer, or NULL on error. + */ +static inline uint8_t + mpeg_metadata_descriptor_metadata_format(struct mpeg_metadata_descriptor *d) +{ + uint8_t *buf = (uint8_t*) d + sizeof(struct mpeg_metadata_descriptor); + + if (d->metadata_application_format == 0xffff) + buf+=4; + return *buf; +} + +/** + * Accessor for pointer to formid field of an mpeg_metadata_descriptor. + * + * @param d The mpeg_metadata_descriptor structure. + * @return The pointer, or NULL on error. + */ +static inline struct mpeg_metadata_descriptor_format_identifier* + mpeg_metadata_descriptor_formid(struct mpeg_metadata_descriptor *d) +{ + uint8_t *buf = (uint8_t*) d + sizeof(struct mpeg_metadata_descriptor); + + if (d->metadata_application_format == 0xffff) + buf+=4; + if (*buf != 0xff) + return NULL; + + return (struct mpeg_metadata_descriptor_format_identifier*) (buf+1); +} + +/** + * Accessor for flags field of an mpeg_metadata_descriptor. + * + * @param d The mpeg_metadata_descriptor structure. + * @return Pointer to the field, or NULL on error. + */ +static inline struct mpeg_metadata_descriptor_flags* + mpeg_metadata_descriptor_flags(struct mpeg_metadata_descriptor *d) +{ + uint8_t *buf = (uint8_t*) d + sizeof(struct mpeg_metadata_descriptor); + + if (d->metadata_application_format == 0xffff) + buf+=4; + if (*buf == 0xff) + buf+=4; + + return (struct mpeg_metadata_descriptor_flags*) buf; +} + + +/** + * Accessor for service_identifier field of an mpeg_metadata_descriptor. + * + * @param flags Pointer to the mpeg_metadata_descriptor_flags. + * @return Pointer to the field, or NULL on error. + */ +static inline struct mpeg_metadata_descriptor_service_identifier* + mpeg_metadata_descriptor_sevice_identifier(struct mpeg_metadata_descriptor_flags *flags) +{ + uint8_t *buf = (uint8_t*) flags + sizeof(struct mpeg_metadata_descriptor_flags); + + if (flags->dsm_cc_flag!=1) + return NULL; + + return (struct mpeg_metadata_descriptor_service_identifier *) buf; +} + +/** + * Accessor for data field of an mpeg_metadata_descriptor_service_identifier. + * + * @param d The mpeg_metadata_descriptor_service_identifier structure. + * @return Pointer to the field. + */ +static inline uint8_t* + mpeg_metadata_descriptor_service_identifier_data(struct mpeg_metadata_descriptor_service_identifier *d) +{ + return (uint8_t*) d + sizeof(struct mpeg_metadata_descriptor_service_identifier); +} + +/** + * Accessor for decoder_config field of an mpeg_metadata_descriptor. + * + * @param flags Pointer to the mpeg_metadata_descriptor_flags. + * @return Pointer to the field, or NULL on error. + */ +static inline struct mpeg_metadata_descriptor_decoder_config* + mpeg_metadata_descriptor_decoder_config(struct mpeg_metadata_descriptor_flags *flags) +{ + uint8_t *buf = (uint8_t*) flags + sizeof(struct mpeg_metadata_descriptor_flags); + + if (flags->decoder_config_flags != 1) + return NULL; + + if (flags->dsm_cc_flag==1) + buf += 1 + buf[1]; + + return (struct mpeg_metadata_descriptor_decoder_config*) buf; +} + +/** + * Accessor for data field of an mpeg_metadata_descriptor_service_identifier. + * + * @param d The mpeg_metadata_descriptor_service_identifier structure. + * @return Pointer to the field. + */ +static inline uint8_t* + mpeg_metadata_descriptor_decoder_config_data(struct mpeg_metadata_descriptor_decoder_config *d) +{ + return (uint8_t*) d + sizeof(struct mpeg_metadata_descriptor_decoder_config); +} + +/** + * Accessor for decoder_config_id_record field of an mpeg_metadata_descriptor. + * + * @param flags Pointer to the mpeg_metadata_descriptor_flags. + * @return Pointer to the field, or NULL on error. + */ +static inline struct mpeg_metadata_descriptor_decoder_config_id_record* + mpeg_metadata_descriptor_decoder_config_id_record(struct mpeg_metadata_descriptor_flags *flags) +{ + uint8_t *buf = (uint8_t*) flags + sizeof(struct mpeg_metadata_descriptor_flags); + + if (flags->decoder_config_flags != 3) + return NULL; + + if (flags->dsm_cc_flag==1) + buf += 1 + buf[1]; + + return (struct mpeg_metadata_descriptor_decoder_config_id_record *) buf; +} + +/** + * Accessor for data field of an mpeg_metadata_descriptor_decoder_config_id_record. + * + * @param d The mpeg_metadata_descriptor_decoder_config_id_record structure. + * @return Pointer to the field. + */ +static inline uint8_t* + mpeg_metadata_descriptor_decoder_config_id_record_data(struct mpeg_metadata_descriptor_decoder_config_id_record *d) +{ + return (uint8_t*) d + sizeof(struct mpeg_metadata_descriptor_decoder_config_id_record); +} + +/** + * Accessor for decoder_config_service_id field of an mpeg_metadata_descriptor. + * + * @param flags Pointer to the mpeg_metadata_descriptor_flags. + * @return Pointer to the field, or NULL on error. + */ +static inline struct mpeg_metadata_descriptor_decoder_config_service_id* + mpeg_metadata_descriptor_decoder_config_service_id(struct mpeg_metadata_descriptor_flags *flags) +{ + uint8_t *buf = (uint8_t*) flags + sizeof(struct mpeg_metadata_descriptor_flags); + + if (flags->decoder_config_flags != 4) + return NULL; + + if (flags->dsm_cc_flag==1) + buf += 1 + buf[1]; + + return (struct mpeg_metadata_descriptor_decoder_config_service_id *) buf; +} + +/** + * Accessor for decoder_config_reserved field of an mpeg_metadata_descriptor. + * + * @param flags Pointer to the mpeg_metadata_descriptor_flags. + * @return Pointer to the field, or NULL on error. + */ +static inline struct mpeg_metadata_descriptor_decoder_config_reserved* + mpeg_metadata_descriptor_decoder_config_reserved(struct mpeg_metadata_descriptor_flags *flags) +{ + uint8_t *buf = (uint8_t*) flags + sizeof(struct mpeg_metadata_descriptor_flags); + + if ((flags->decoder_config_flags != 5) && (flags->decoder_config_flags != 6)) + return NULL; + + if (flags->dsm_cc_flag==1) + buf += 1 + buf[1]; + + return (struct mpeg_metadata_descriptor_decoder_config_reserved *) buf; +} + +/** + * Accessor for data field of an mpeg_metadata_descriptor_decoder_config_reserved. + * + * @param d The mpeg_metadata_descriptor_decoder_config_reserved structure. + * @return Pointer to the field. + */ +static inline uint8_t* + mpeg_metadata_descriptor_decoder_config_reserved_data(struct mpeg_metadata_descriptor_decoder_config_reserved *d) +{ + return (uint8_t*) d + sizeof(struct mpeg_metadata_descriptor_decoder_config_reserved); +} + +/** + * Accessor for private_data field of an mpeg_metadata_descriptor. + * + * @param d The mpeg_metadata_descriptor structure. + * @param flags Pointer to the mpeg_metadata_descriptor_flags. + * @param length Where the number of bytes in the field should be stored. + * @return Pointer to the field. + */ +static inline uint8_t* + mpeg_metadata_descriptor_private_data(struct mpeg_metadata_descriptor *d, + struct mpeg_metadata_descriptor_flags *flags, + int *length) +{ + uint8_t *buf = (uint8_t*) flags + sizeof(struct mpeg_metadata_descriptor_flags); + uint8_t *end = (uint8_t*) d + d->d.len + 2; + + + if (flags->dsm_cc_flag==1) + buf += 1 + buf[1]; + if (flags->decoder_config_flags==1) + buf += 1 + buf[1]; + if (flags->decoder_config_flags==3) + buf += 1 + buf[1]; + if (flags->decoder_config_flags==4) + buf++; + if ((flags->decoder_config_flags==5)||(flags->decoder_config_flags==6)) + buf += 1 + buf[1]; + + *length = end - buf; + return buf; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/metadata_pointer_descriptor.h b/lib/libucsi/mpeg/metadata_pointer_descriptor.h new file mode 100644 index 0000000..e4d7503 --- /dev/null +++ b/lib/libucsi/mpeg/metadata_pointer_descriptor.h @@ -0,0 +1,360 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_METADATA_POINTER_DESCRIPTOR +#define _UCSI_MPEG_METADATA_POINTER_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * Possible values for the mpeg_carriage_flags field. + */ +enum { + MPEG_CARRIAGE_SAME_TS = 0x00, + MPEG_CARRIAGE_DIFFERENT_TS = 0x01, + MPEG_CARRIAGE_PS = 0x02, + MPEG_CARRIAGE_OTHER = 0x03, +}; + +/** + * mpeg_metadata_pointer_descriptor structure. + */ +struct mpeg_metadata_pointer_descriptor { + struct descriptor d; + + uint16_t metadata_application_format; + /* struct mpeg_metadata_pointer_descriptor_application_format_identifier appid */ + /* uint8_t metadata_format */ + /* struct mpeg_metadata_pointer_descriptor_format_identifier formid */ + /* struct mpeg_metadata_pointer_descriptor_flags flags */ + /* struct mpeg_metadata_pointer_descriptor_locator locator */ + /* struct mpeg_metadata_pointer_descriptor_program_number program_number */ + /* struct mpeg_metadata_pointer_descriptor_carriage carriage */ + /* uint8_t private_data[] */ +} __ucsi_packed; + +/** + * appid field of a metadata_pointer_descriptor. + */ +struct mpeg_metadata_pointer_descriptor_application_format_identifier { + uint32_t id; +} __ucsi_packed; + +/** + * formid field of a metadata_pointer_descriptor. + */ +struct mpeg_metadata_pointer_descriptor_format_identifier { + uint32_t id; +} __ucsi_packed; + +/** + * Flags field of a metadata_pointer_descriptor + */ +struct mpeg_metadata_pointer_descriptor_flags { + uint8_t metadata_service_id; + EBIT3(uint8_t metadata_locator_record_flag : 1; , + uint8_t mpeg_carriage_flags : 2; , + uint8_t reserved : 5; ); +} __ucsi_packed; + +/** + * Reference_id field of a metadata_pointer_descriptor. + */ +struct mpeg_metadata_pointer_descriptor_locator { + uint8_t metadata_locator_record_length; + /* uint8_t data[] */ +} __ucsi_packed; + +/** + * program_number field of a metadata_pointer_descriptor. + */ +struct mpeg_metadata_pointer_descriptor_program_number { + uint16_t number; +} __ucsi_packed; + +/** + * carriage field of a metadata_pointer_descriptor. + */ +struct mpeg_metadata_pointer_descriptor_carriage { + uint16_t transport_stream_location; + uint16_t transport_stream_id; +} __ucsi_packed; + + + + +/** + * Process an mpeg_metadata_pointer_descriptor. + * + * @param d Generic descriptor. + * @return Pointer to an mpeg_metadata_pointer_descriptor, or NULL on error. + */ +static inline struct mpeg_metadata_pointer_descriptor* + mpeg_metadata_pointer_descriptor_codec(struct descriptor* d) +{ + uint32_t pos = 2; + uint8_t *buf = (uint8_t*) d; + uint32_t len = d->len + 2; + struct mpeg_metadata_pointer_descriptor_flags *flags; + int id; + + if (len < sizeof(struct mpeg_metadata_pointer_descriptor)) + return NULL; + + bswap16(buf + pos); + id = *((uint16_t*) (buf+pos)); + pos += 2; + + if (id == 0xffff) { + if (len < (pos+4)) + return NULL; + bswap32(buf+pos); + pos += 4; + } + + if (len < (pos+1)) + return NULL; + + id = buf[pos]; + pos++; + if (id == 0xff) { + if (len < (pos+4)) + return NULL; + bswap32(buf+pos); + pos += 4; + } + + if (len < (pos + sizeof(struct mpeg_metadata_pointer_descriptor_flags))) + return NULL; + flags = (struct mpeg_metadata_pointer_descriptor_flags*) (buf+pos); + pos += sizeof(struct mpeg_metadata_pointer_descriptor_flags); + + if (flags->metadata_locator_record_flag == 1) { + if (len < (pos+1)) + return NULL; + if (len < (pos+1+buf[pos])) + return NULL; + pos += 1 + buf[pos]; + } + + if (flags->mpeg_carriage_flags < 3) { + if (len < (pos + 2)) + return NULL; + bswap16(buf+pos); + pos += 2; + } + + if (flags->mpeg_carriage_flags == 1) { + if (len < (pos + 4)) + return NULL; + bswap16(buf+pos); + bswap16(buf+pos+2); + pos += 4; + } + + if (len < pos) + return NULL; + + return (struct mpeg_metadata_pointer_descriptor*) d; +} + +/** + * Accessor for pointer to appid field of an mpeg_metadata_pointer_descriptor. + * + * @param d The mpeg_metadata_pointer_descriptor structure. + * @return The pointer, or NULL on error. + */ +static inline struct mpeg_metadata_pointer_descriptor_application_format_identifier* + mpeg_metadata_pointer_descriptor_appid(struct mpeg_metadata_pointer_descriptor *d) +{ + uint8_t *buf = (uint8_t*) d + sizeof(struct mpeg_metadata_pointer_descriptor); + + if (d->metadata_application_format != 0xffff) + return NULL; + return (struct mpeg_metadata_pointer_descriptor_application_format_identifier*) buf; +} + +/** + * Accessor for metadata_format field of an mpeg_metadata_pointer_descriptor. + * + * @param d The mpeg_metadata_pointer_descriptor structure. + * @return The pointer, or NULL on error. + */ +static inline uint8_t + mpeg_metadata_pointer_descriptor_metadata_format(struct mpeg_metadata_pointer_descriptor *d) +{ + uint8_t *buf = (uint8_t*) d + sizeof(struct mpeg_metadata_pointer_descriptor); + + if (d->metadata_application_format == 0xffff) + buf+=4; + return *buf; +} + +/** + * Accessor for pointer to formid field of an mpeg_metadata_pointer_descriptor. + * + * @param d The mpeg_metadata_pointer_descriptor structure. + * @return The pointer, or NULL on error. + */ +static inline struct mpeg_metadata_pointer_descriptor_format_identifier* + mpeg_metadata_pointer_descriptor_formid(struct mpeg_metadata_pointer_descriptor *d) +{ + uint8_t *buf = (uint8_t*) d + sizeof(struct mpeg_metadata_pointer_descriptor); + + if (d->metadata_application_format == 0xffff) + buf+=4; + if (*buf != 0xff) + return NULL; + + return (struct mpeg_metadata_pointer_descriptor_format_identifier*) (buf+1); +} + +/** + * Accessor for flags field of an mpeg_metadata_pointer_descriptor. + * + * @param d The mpeg_metadata_pointer_descriptor structure. + * @return Pointer to the field, or NULL on error. + */ +static inline struct mpeg_metadata_pointer_descriptor_flags* + mpeg_metadata_pointer_descriptor_flags(struct mpeg_metadata_pointer_descriptor *d) +{ + uint8_t *buf = (uint8_t*) d + sizeof(struct mpeg_metadata_pointer_descriptor); + + if (d->metadata_application_format == 0xffff) + buf+=4; + if (*buf == 0xff) + buf+=4; + + return (struct mpeg_metadata_pointer_descriptor_flags*) buf; +} + + +/** + * Accessor for locator field of an mpeg_metadata_pointer_descriptor. + * + * @param flags Pointer to the mpeg_metadata_pointer_descriptor_flags. + * @return Pointer to the field, or NULL on error. + */ +static inline struct mpeg_metadata_pointer_descriptor_locator* + mpeg_metadata_pointer_descriptor_locator(struct mpeg_metadata_pointer_descriptor_flags *flags) +{ + uint8_t *buf = (uint8_t*) flags + sizeof(struct mpeg_metadata_pointer_descriptor_flags); + + if (flags->metadata_locator_record_flag!=1) + return NULL; + + return (struct mpeg_metadata_pointer_descriptor_locator *) buf; +} + +/** + * Accessor for data field of an mpeg_metadata_pointer_descriptor_locator. + * + * @param d The mpeg_metadata_pointer_descriptor_locator structure. + * @return Pointer to the field. + */ +static inline uint8_t* + mpeg_metadata_pointer_descriptor_locator_data(struct mpeg_metadata_pointer_descriptor_locator *d) +{ + return (uint8_t*) d + sizeof(struct mpeg_metadata_pointer_descriptor_locator); +} + + +/** + * Accessor for program_number field of an mpeg_metadata_pointer_descriptor. + * + * @param flags Pointer to the mpeg_metadata_pointer_descriptor_flags. + * @return Pointer to the field, or NULL on error. + */ +static inline struct mpeg_metadata_pointer_descriptor_program_number* + mpeg_metadata_pointer_descriptor_program_number(struct mpeg_metadata_pointer_descriptor_flags *flags) +{ + uint8_t *buf = (uint8_t*) flags + sizeof(struct mpeg_metadata_pointer_descriptor_flags); + + if (flags->mpeg_carriage_flags < 3) + return NULL; + + if (flags->metadata_locator_record_flag==1) + buf += 1 + buf[1]; + + return (struct mpeg_metadata_pointer_descriptor_program_number*) buf; +} + +/** + * Accessor for carriage field of an mpeg_metadata_pointer_descriptor. + * + * @param flags Pointer to the mpeg_metadata_pointer_descriptor_flags. + * @return Pointer to the field, or NULL on error. + */ +static inline struct mpeg_metadata_pointer_descriptor_carriage* + mpeg_metadata_pointer_descriptor_carriage(struct mpeg_metadata_pointer_descriptor_flags *flags) +{ + uint8_t *buf = (uint8_t*) flags + sizeof(struct mpeg_metadata_pointer_descriptor_flags); + + if (flags->mpeg_carriage_flags != 1) + return NULL; + + if (flags->metadata_locator_record_flag==1) + buf += 1 + buf[1]; + if (flags->mpeg_carriage_flags < 3) + buf += sizeof(struct mpeg_metadata_pointer_descriptor_program_number); + + return (struct mpeg_metadata_pointer_descriptor_carriage *) buf; +} + +/** + * Accessor for private_data field of an mpeg_metadata_pointer_descriptor. + * + * @param d The mpeg_metadata_pointer_descriptor structure. + * @param flags Pointer to the mpeg_metadata_pointer_descriptor_flags. + * @param length Where the number of bytes in the field should be stored. + * @return Pointer to the field. + */ +static inline uint8_t* + mpeg_metadata_pointer_descriptor_private_data(struct mpeg_metadata_pointer_descriptor *d, + struct mpeg_metadata_pointer_descriptor_flags *flags, + int *length) +{ + uint8_t *buf = (uint8_t*) flags + sizeof(struct mpeg_metadata_pointer_descriptor_flags); + uint8_t *end = (uint8_t*) d + d->d.len + 2; + + + if (flags->metadata_locator_record_flag==1) + buf += 1 + buf[1]; + if (flags->mpeg_carriage_flags < 3) + buf += sizeof(struct mpeg_metadata_pointer_descriptor_program_number); + if (flags->mpeg_carriage_flags != 1) + buf += sizeof(struct mpeg_metadata_pointer_descriptor_carriage); + + *length = end - buf; + return buf; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/metadata_section.c b/lib/libucsi/mpeg/metadata_section.c new file mode 100644 index 0000000..c1ce019 --- /dev/null +++ b/lib/libucsi/mpeg/metadata_section.c @@ -0,0 +1,27 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <libucsi/mpeg/metadata_section.h> + +struct mpeg_metadata_section * mpeg_metadata_section_codec(struct section_ext * ext) +{ + return (struct mpeg_metadata_section *)ext; +} diff --git a/lib/libucsi/mpeg/metadata_section.h b/lib/libucsi/mpeg/metadata_section.h new file mode 100644 index 0000000..62c4e03 --- /dev/null +++ b/lib/libucsi/mpeg/metadata_section.h @@ -0,0 +1,122 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_METADATA_SECTION_H +#define _UCSI_MPEG_METADATA_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/section.h> + +/** + * mpeg_metadata_section structure. + */ +struct mpeg_metadata_section { + struct section_ext head; + + /* uint8_t data[] */ +} __ucsi_packed; + +/** + * Process an mpeg_metadata_section structure. + * + * @param section Pointer to the section_ext structure. + * @return Pointer to the mpeg_metadata_section structure, or NULL on error. + */ +extern struct mpeg_metadata_section *mpeg_metadata_section_codec(struct section_ext *section); + +/** + * Accessor for the random_access_indicator field of a metadata section. + * + * @param metadata metadata section pointer. + * @return The random_access_indicator. + */ +static inline uint8_t mpeg_metadata_section_random_access_indicator(struct mpeg_metadata_section *metadata) +{ + return metadata->head.reserved >> 1; +} + +/** + * Accessor for the decoder_config_flag field of a metadata section. + * + * @param metadata metadata section pointer. + * @return The decoder_config_flag. + */ +static inline uint8_t mpeg_metadata_section_decoder_config_flag(struct mpeg_metadata_section *metadata) +{ + return metadata->head.reserved & 1; +} + +/** + * Accessor for the fragment_indicator field of a metadata section. + * + * @param metadata metadata section pointer. + * @return The fragment_indicator. + */ +static inline uint8_t mpeg_metadata_section_fragment_indicator(struct mpeg_metadata_section *metadata) +{ + return metadata->head.reserved1; +} + +/** + * Accessor for the service_id field of a metadata section. + * + * @param metadata metadata section pointer. + * @return The service_id. + */ +static inline uint16_t mpeg_metadata_section_service_id(struct mpeg_metadata_section *metadata) +{ + return metadata->head.table_id_ext >> 8; +} + +/** + * Retrieve pointer to data field of an mpeg_metadata_section. + * + * @param s mpeg_metadata_section pointer. + * @return Pointer to the field. + */ +static inline uint8_t * + mpeg_metadata_section_data(struct mpeg_metadata_section *s) +{ + return (uint8_t *) s + sizeof(struct mpeg_metadata_section); +} + + +/** + * Determine length of the data field of an mpeg_copyright_descriptor. + * + * @param s mpeg_metadata_section_data pointer. + * @return Length of field in bytes. + */ +static inline int + mpeg_metadata_section_data_length(struct mpeg_metadata_section *s) +{ + return section_ext_length(&s->head) - sizeof(struct mpeg_metadata_section); +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/metadata_std_descriptor.h b/lib/libucsi/mpeg/metadata_std_descriptor.h new file mode 100644 index 0000000..fc83e6e --- /dev/null +++ b/lib/libucsi/mpeg/metadata_std_descriptor.h @@ -0,0 +1,72 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_METADATA_STD_DESCRIPTOR +#define _UCSI_MPEG_METADATA_STD_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * mpeg_metadata_std_descriptor structure. + */ +struct mpeg_metadata_std_descriptor { + struct descriptor d; + + EBIT2(uint32_t reserved_1 : 2; , + uint32_t metadata_input_leak_rate :22; ); + EBIT2(uint32_t reserved_2 : 2; , + uint32_t metadata_buffer_size :22; ); + EBIT2(uint32_t reserved_3 : 2; , + uint32_t metadata_output_leak_rate :22; ); +} __ucsi_packed; + +/** + * Process an mpeg_metadata_std_descriptor. + * + * @param d Pointer to the generic descriptor structure. + * @return Pointer to the mpeg_metadata_std_descriptor, or NULL on error. + */ +static inline struct mpeg_metadata_std_descriptor* + mpeg_metadata_std_descriptor_codec(struct descriptor* d) +{ + uint8_t *buf = (uint8_t*) d; + + if (d->len != (sizeof(struct mpeg_metadata_std_descriptor) - 2)) + return NULL; + + bswap24(buf + 2); + bswap24(buf + 5); + bswap24(buf + 8); + + return (struct mpeg_metadata_std_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/mpeg4_audio_descriptor.h b/lib/libucsi/mpeg/mpeg4_audio_descriptor.h new file mode 100644 index 0000000..f876759 --- /dev/null +++ b/lib/libucsi/mpeg/mpeg4_audio_descriptor.h @@ -0,0 +1,61 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG4_AUDIO_DESCRIPTOR +#define _UCSI_MPEG4_AUDIO_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * mpeg4_audio_descriptor structure. + */ +struct mpeg4_audio_descriptor { + struct descriptor d; + + uint8_t mpeg4_audio_profile_and_level; +} __ucsi_packed; + +/** + * Process an mpeg4_audio_descriptor. + * + * @param d Generic descriptor structure. + * @return Pointer to an mpeg4_audio_descriptor structure, or NULL on error. + */ +static inline struct mpeg4_audio_descriptor* + mpeg4_audio_descriptor_codec(struct descriptor* d) +{ + if (d->len != (sizeof(struct mpeg4_audio_descriptor) - 2)) + return NULL; + + return (struct mpeg4_audio_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/mpeg4_video_descriptor.h b/lib/libucsi/mpeg/mpeg4_video_descriptor.h new file mode 100644 index 0000000..b956b91 --- /dev/null +++ b/lib/libucsi/mpeg/mpeg4_video_descriptor.h @@ -0,0 +1,61 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG4_VIDEO_DESCRIPTOR +#define _UCSI_MPEG4_VIDEO_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * mpeg4_video_descriptor structure. + */ +struct mpeg4_video_descriptor { + struct descriptor d; + + uint8_t mpeg4_visual_profile_and_level; +} __ucsi_packed; + +/** + * Process an mpeg4_video_descriptor structure. + * + * @param d Pointer to generic descriptor structure. + * @return Pointer to mpeg4_video_descriptor structure, or NULL on error. + */ +static inline struct mpeg4_video_descriptor* + mpeg4_video_descriptor_codec(struct descriptor* d) +{ + if (d->len != (sizeof(struct mpeg4_video_descriptor) - 2)) + return NULL; + + return (struct mpeg4_video_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/multiplex_buffer_descriptor.h b/lib/libucsi/mpeg/multiplex_buffer_descriptor.h new file mode 100644 index 0000000..d55ce3d --- /dev/null +++ b/lib/libucsi/mpeg/multiplex_buffer_descriptor.h @@ -0,0 +1,65 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_MULTIPLEX_BUFFER_DESCRIPTOR +#define _UCSI_MPEG_MULTIPLEX_BUFFER_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * mpeg_multiplex_buffer_descriptor descriptor. + */ +struct mpeg_multiplex_buffer_descriptor { + struct descriptor d; + + EBIT2(uint64_t mb_buffer_size : 24; , + uint64_t tb_leak_rate : 24; ); +} __ucsi_packed; + +/** + * Process an mpeg_multiplex_buffer_descriptor. + * + * @param d Pointer to generic descriptor structure. + * @return Pointer to an mpeg_multiplex_buffer_descriptor structure, or NULL on + * error. + */ +static inline struct mpeg_multiplex_buffer_descriptor* + mpeg_multiplex_buffer_descriptor_codec(struct descriptor* d) +{ + if (d->len != (sizeof(struct mpeg_multiplex_buffer_descriptor) - 2)) + return NULL; + + bswap48((uint8_t*) d + 2); + + return (struct mpeg_multiplex_buffer_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/multiplex_buffer_utilization_descriptor.h b/lib/libucsi/mpeg/multiplex_buffer_utilization_descriptor.h new file mode 100644 index 0000000..16550ed --- /dev/null +++ b/lib/libucsi/mpeg/multiplex_buffer_utilization_descriptor.h @@ -0,0 +1,67 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_MULTIPLEX_BUFFER_UTILIZATION_DESCRIPTOR +#define _UCSI_MPEG_MULTIPLEX_BUFFER_UTILIZATION_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * mpeg_multiplex_buffer_utilization_descriptor structure. + */ +struct mpeg_multiplex_buffer_utilization_descriptor { + struct descriptor d; + + EBIT2(uint16_t bound_valid_flag : 1; , + uint16_t ltw_offset_lower_bound : 15; ); + EBIT2(uint16_t reserved : 1; , + uint16_t ltw_offset_upper_bound : 15; ); +} __ucsi_packed; + +/** + * Process a mpeg_multiplex_buffer_utilization_descriptor. + * + * @param d Generic descriptor pointer. + * @return mpeg_multiplex_buffer_utilization_descriptor pointer, or NULL on error. + */ +static inline struct mpeg_multiplex_buffer_utilization_descriptor* + mpeg_multiplex_buffer_utilization_descriptor_codec(struct descriptor* d) +{ + if (d->len != (sizeof(struct mpeg_multiplex_buffer_utilization_descriptor) - 2)) + return NULL; + + bswap16((uint8_t*) d + 2); + bswap16((uint8_t*) d + 4); + + return (struct mpeg_multiplex_buffer_utilization_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/muxcode_descriptor.h b/lib/libucsi/mpeg/muxcode_descriptor.h new file mode 100644 index 0000000..6bed334 --- /dev/null +++ b/lib/libucsi/mpeg/muxcode_descriptor.h @@ -0,0 +1,82 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_MUXCODE_DESCRIPTOR +#define _UCSI_MPEG_MUXCODE_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * mpeg_muxcode_descriptor structure + */ +struct mpeg_muxcode_descriptor { + struct descriptor d; + + /* uint8_t entries[] */ +} __ucsi_packed; + +/** + * Process an mpeg_muxcode_descriptor. + * + * @param d Pointer to a generic descriptor structure. + * @return Pointer to an mpeg_muxcode_descriptor structure, or NULL on error. + */ +static inline struct mpeg_muxcode_descriptor* + mpeg_muxcode_descriptor_codec(struct descriptor* d) +{ + return (struct mpeg_muxcode_descriptor*) d; +} + +/** + * Retrieve pointer to entries field of an mpeg_muxcode_descriptor structure. + * + * @param d Generic descriptor structure. + * @return Pointer to the entries field. + */ +static inline uint8_t * + mpeg_muxcode_descriptor_entries(struct mpeg_muxcode_descriptor *d) +{ + return (uint8_t *) d + sizeof(struct mpeg_muxcode_descriptor); +} + +/** + * Determine length of entries field of an mpeg_muxcode_descriptor structure. + * + * @param d Generic descriptor structure. + * @return Number of bytes in the entries field. + */ +static inline int + mpeg_muxcode_descriptor_entries_length(struct mpeg_muxcode_descriptor *d) +{ + return d->d.len; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/odsmt_section.c b/lib/libucsi/mpeg/odsmt_section.c new file mode 100644 index 0000000..07407f2 --- /dev/null +++ b/lib/libucsi/mpeg/odsmt_section.c @@ -0,0 +1,80 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <libucsi/mpeg/odsmt_section.h> + +struct mpeg_odsmt_section *mpeg_odsmt_section_codec(struct section_ext * ext) +{ + struct mpeg_odsmt_section * odsmt = (struct mpeg_odsmt_section *)ext; + uint8_t * buf = (uint8_t *)ext; + size_t pos = sizeof(struct section_ext); + size_t len = section_ext_length(ext); + int i; + + if (len < sizeof(struct mpeg_odsmt_section)) + return NULL; + + pos++; + + if (odsmt->stream_count == 0) { + struct mpeg_odsmt_stream * stream = + (struct mpeg_odsmt_stream *) (buf + pos); + + if ((pos + sizeof(struct mpeg_odsmt_stream_single)) > len) + return NULL; + + bswap16(buf+pos); + pos+=3; + + if ((pos + stream->u.single.es_info_length) >= len) + return NULL; + + if (verify_descriptors(buf + pos, stream->u.single.es_info_length)) + return NULL; + + pos += stream->u.single.es_info_length; + } else { + for (i=0; i< odsmt->stream_count; i++) { + struct mpeg_odsmt_stream * stream = + (struct mpeg_odsmt_stream *)(buf + pos); + + if ((pos + sizeof(struct mpeg_odsmt_stream_multi)) > len) + return NULL; + + bswap16(buf+pos); + pos += sizeof(struct mpeg_odsmt_stream_multi); + + if ((pos + stream->u.multi.es_info_length) > len) + return NULL; + + if (verify_descriptors(buf + pos, + stream->u.multi.es_info_length)) + return NULL; + + pos += stream->u.multi.es_info_length; + } + } + + if (pos != len) + return NULL; + + return (struct mpeg_odsmt_section *) ext; +} diff --git a/lib/libucsi/mpeg/odsmt_section.h b/lib/libucsi/mpeg/odsmt_section.h new file mode 100644 index 0000000..4e01085 --- /dev/null +++ b/lib/libucsi/mpeg/odsmt_section.h @@ -0,0 +1,224 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_ODSMT_SECTION_H +#define _UCSI_MPEG_ODSMT_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/section.h> + +/** + * mpeg_odsmt_section structure. + */ +struct mpeg_odsmt_section { + struct section_ext head; + + uint8_t stream_count; + /* stream_count==0 => struct mpeg_odsmt_stream_single streams + stream_count>0 => struct mpeg_odsmt_stream_multi streams[] */ + /* uint8_t object_descriptors[] */ +} __ucsi_packed; + +struct mpeg_odsmt_stream_single +{ + uint16_t esid; + uint8_t es_info_length; + /* struct descriptor descriptors[] */ +} __ucsi_packed; + +struct mpeg_odsmt_stream_multi +{ + uint16_t esid; + uint8_t fmc; + uint8_t es_info_length; + /* struct descriptor descriptors[] */ +} __ucsi_packed; + +/** + * Structure describing the stream information held in an mpeg_odsmt_section. + */ +struct mpeg_odsmt_stream { + union { + struct mpeg_odsmt_stream_single single; + struct mpeg_odsmt_stream_multi multi; + } u; +} __ucsi_packed; + +/** + * Process an mpeg_odsmt_section. + * + * @param section Pointer to the generic section_ext structure. + * @return Pointer to a mpeg_odsmt_section structure, or NULL on error. + */ +extern struct mpeg_odsmt_section *mpeg_odsmt_section_codec(struct section_ext *section); + +/** + * Accessor for the PID field of an ODSMT. + * + * @param odsmt odsmt pointer. + * @return The pid. + */ +static inline uint16_t mpeg_odsmt_section_pid(struct mpeg_odsmt_section *odsmt) +{ + return odsmt->head.table_id_ext & 0x1fff; +} + +/** + * Convenience iterator for the streams field of an mpeg_odsmt_section. + * + * @param osdmt Pointer to the mpeg_odsmt_section structure. + * @param pos Variable holding pointer to the current mpeg_odsmt_stream structure. + * @param index Variable holding the stream index. + */ +#define mpeg_odsmt_section_streams_for_each(osdmt, pos, index) \ + for (index=0, (pos) = mpeg_odsmt_section_streams_first(odsmt); \ + (pos); \ + (pos) = mpeg_odsmt_section_streams_next(odsmt, pos, ++index)) + +/** + * Convenience iterator for the descriptors field of an mpeg_odsmt_stream. + * + * @param osdmt Pointer to the mpeg_odsmt_section structure. + * @param stream Pointer to the mpeg_odsmt_stream structure. + * @param pos Variable holding pointer to the current descriptor structure. + */ +#define mpeg_odsmt_stream_descriptors_for_each(osdmt, stream, pos) \ + for ((pos) = mpeg_odsmt_stream_descriptors_first(odsmt, stream); \ + (pos); \ + (pos) = mpeg_odsmt_stream_descriptors_next(odsmt, stream, pos)) + +/** + * Retrieve a pointer to the object_descriptors field of an mpeg_odsmt_section. + * + * @param osdmt Pointer to the mpeg_odsmt_section structure. + * @param len On return, will contain the number of bytes in the object descriptors field. + * @return Pointer to the object_descriptors field, or NULL on error. + */ +static inline uint8_t* + mpeg_odsmt_section_object_descriptors(struct mpeg_odsmt_section * odsmt, + size_t* len); + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct mpeg_odsmt_stream * + mpeg_odsmt_section_streams_first(struct mpeg_odsmt_section *odsmt) +{ + size_t pos = sizeof(struct mpeg_odsmt_section); + + if (pos >= section_ext_length(&odsmt->head)) + return NULL; + + return (struct mpeg_odsmt_stream *) ((uint8_t *) odsmt + pos); +} + +static inline struct mpeg_odsmt_stream * + mpeg_odsmt_section_streams_next(struct mpeg_odsmt_section *odsmt, + struct mpeg_odsmt_stream *pos, + int _index) +{ + uint8_t *end = (uint8_t*) odsmt + section_ext_length(&odsmt->head); + uint8_t *next; + + if (_index > odsmt->stream_count) + return NULL; + + next = (uint8_t *) pos + sizeof(struct mpeg_odsmt_stream_multi) + + pos->u.multi.es_info_length; + + if (next >= end) + return NULL; + + return (struct mpeg_odsmt_stream *) next; +} + +static inline struct descriptor * + mpeg_odsmt_stream_descriptors_first(struct mpeg_odsmt_section *odsmt, + struct mpeg_odsmt_stream *stream) +{ + if (odsmt->stream_count == 0) { + if (stream->u.single.es_info_length == 0) + return NULL; + + return (struct descriptor *) + ((uint8_t*) stream + sizeof(struct mpeg_odsmt_stream_single)); + } else { + if (stream->u.multi.es_info_length == 0) + return NULL; + + return (struct descriptor *) + ((uint8_t*) stream + sizeof(struct mpeg_odsmt_stream_multi)); + } +} + +static inline struct descriptor * + mpeg_odsmt_stream_descriptors_next(struct mpeg_odsmt_section *odsmt, + struct mpeg_odsmt_stream *stream, + struct descriptor* pos) +{ + if (odsmt->stream_count == 0) { + return next_descriptor((uint8_t *) stream + sizeof(struct mpeg_odsmt_stream_single), + stream->u.single.es_info_length, + pos); + } else { + return next_descriptor((uint8_t *) stream + sizeof(struct mpeg_odsmt_stream_multi), + stream->u.multi.es_info_length, + pos); + } +} + +static inline uint8_t* + mpeg_odsmt_section_object_descriptors(struct mpeg_odsmt_section * odsmt, + size_t* len) +{ + struct mpeg_odsmt_stream* pos; + size_t size = sizeof(struct mpeg_odsmt_section); + int _index; + + mpeg_odsmt_section_streams_for_each(odsmt, pos, _index) { + if (odsmt->stream_count == 0) + size += sizeof(struct mpeg_odsmt_stream_single) + + pos->u.single.es_info_length; + else + size += sizeof(struct mpeg_odsmt_stream_multi) + + pos->u.multi.es_info_length; + } + + *len = section_ext_length(&odsmt->head) - size; + return (uint8_t*) odsmt + size; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/pat_section.c b/lib/libucsi/mpeg/pat_section.c new file mode 100644 index 0000000..2e4c2cc --- /dev/null +++ b/lib/libucsi/mpeg/pat_section.c @@ -0,0 +1,46 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <libucsi/mpeg/pat_section.h> + +struct mpeg_pat_section *mpeg_pat_section_codec(struct section_ext * ext) +{ + uint8_t *buf = (uint8_t *)ext; + size_t pos = sizeof(struct section_ext); + size_t len = section_ext_length(ext); + + if (len < sizeof(struct mpeg_pat_section)) + return NULL; + + while (pos < len) { + if ((pos + 4) > len) + return NULL; + + bswap16(buf + pos); + bswap16(buf + pos + 2); + pos += 4; + } + + if (pos != len) + return NULL; + + return (struct mpeg_pat_section *)ext; +} diff --git a/lib/libucsi/mpeg/pat_section.h b/lib/libucsi/mpeg/pat_section.h new file mode 100644 index 0000000..eadfe28 --- /dev/null +++ b/lib/libucsi/mpeg/pat_section.h @@ -0,0 +1,118 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_PAT_SECTION_H +#define _UCSI_MPEG_PAT_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/section.h> + +/** + * mpeg_pat_section structure. + */ +struct mpeg_pat_section { + struct section_ext head; /* table_id_ext == transport_stream_id */ + + /* struct mpeg_pat_program programs[] */ +} __ucsi_packed; + +/** + * A program within an mpeg_pat_section. + */ +struct mpeg_pat_program { + uint16_t program_number; + EBIT2(uint16_t reserved : 3; , + uint16_t pid :13; ); +} __ucsi_packed; + +/** + * Process an mpeg_pat_section. + * + * @param section Pointer to the generic section_ext structure. + * @return Pointer to the mpeg_pat_section structure, or NULL on error. + */ +extern struct mpeg_pat_section *mpeg_pat_section_codec(struct section_ext *section); + +/** + * Accessor for the transport_stream_id field of a PAT. + * + * @param pat PAT pointer. + * @return The transport_stream_id. + */ +static inline uint16_t mpeg_pat_section_transport_stream_id(struct mpeg_pat_section *pat) +{ + return pat->head.table_id_ext; +} + +/** + * Conveience iterator for the programs field of an mpeg_pat_section. + * + * @param pat Pointer to the mpeg_pat_section structure. + * @param pos Variable holding a pointer to the current mpeg_pat_program structure. + */ +#define mpeg_pat_section_programs_for_each(pat, pos) \ + for ((pos) = mpeg_pat_section_programs_first(pat); \ + (pos); \ + (pos) = mpeg_pat_section_programs_next(pat, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct mpeg_pat_program * + mpeg_pat_section_programs_first(struct mpeg_pat_section * pat) +{ + size_t pos = sizeof(struct mpeg_pat_section); + + if (pos >= section_ext_length(&pat->head)) + return NULL; + + return (struct mpeg_pat_program*)((uint8_t *) pat + pos); +} + +static inline + struct mpeg_pat_program *mpeg_pat_section_programs_next(struct mpeg_pat_section * pat, + struct mpeg_pat_program * pos) +{ + uint8_t *end = (uint8_t*) pat + section_ext_length(&pat->head); + uint8_t *next= (uint8_t *) pos + sizeof(struct mpeg_pat_program); + + if (next >= end) + return NULL; + + return (struct mpeg_pat_program *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/pmt_section.c b/lib/libucsi/mpeg/pmt_section.c new file mode 100644 index 0000000..e5aec6a --- /dev/null +++ b/lib/libucsi/mpeg/pmt_section.c @@ -0,0 +1,71 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <libucsi/mpeg/pmt_section.h> + +struct mpeg_pmt_section * mpeg_pmt_section_codec(struct section_ext * ext) +{ + uint8_t * buf = (uint8_t *) ext; + struct mpeg_pmt_section * pmt = (struct mpeg_pmt_section *) ext; + size_t pos = sizeof(struct section_ext); + size_t len = section_ext_length(ext); + + if (len < sizeof(struct mpeg_pmt_section)) + return NULL; + + bswap16(buf + pos); + pos += 2; + bswap16(buf + pos); + pos += 2; + + if ((pos + pmt->program_info_length) > len) + return NULL; + + if (verify_descriptors(buf + pos, pmt->program_info_length)) + return NULL; + + pos += pmt->program_info_length; + + while (pos < len) { + struct mpeg_pmt_stream * stream = + (struct mpeg_pmt_stream *) (buf + pos); + + if ((pos + sizeof(struct mpeg_pmt_stream)) > len) + return NULL; + + bswap16(buf + pos + 1); + bswap16(buf + pos + 3); + pos += sizeof(struct mpeg_pmt_stream); + + if ((pos + stream->es_info_length) > len) + return NULL; + + if (verify_descriptors(buf + pos, stream->es_info_length)) + return NULL; + + pos += stream->es_info_length; + } + + if (pos != len) + return NULL; + + return (struct mpeg_pmt_section *) ext; +} diff --git a/lib/libucsi/mpeg/pmt_section.h b/lib/libucsi/mpeg/pmt_section.h new file mode 100644 index 0000000..03dea1b --- /dev/null +++ b/lib/libucsi/mpeg/pmt_section.h @@ -0,0 +1,188 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_PMT_SECTION_H +#define _UCSI_MPEG_PMT_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/section.h> + +/** + * mpeg_pmt_section structure. + */ +struct mpeg_pmt_section { + struct section_ext head; + + EBIT2(uint16_t reserved_1 : 3; , + uint16_t pcr_pid :13; ); + EBIT2(uint16_t reserved_2 : 4; , + uint16_t program_info_length :12; ); + /* struct descriptor descriptors[] */ + /* struct mpeg_pmt_stream streams[] */ +} __ucsi_packed; + +/** + * A stream within an mpeg_pmt_section. + */ +struct mpeg_pmt_stream { + uint8_t stream_type; + EBIT2(uint16_t reserved_1 : 3; , + uint16_t pid :13; ); + EBIT2(uint16_t reserved_2 : 4; , + uint16_t es_info_length :12; ); + + /* struct descriptor descriptors[] */ +} __ucsi_packed; + +/** + * Process an mpeg_pmt_section section. + * + * @param section Pointer to the generic section header. + * @return Pointer to the mpeg_pmt_section structure, or NULL on error. + */ +extern struct mpeg_pmt_section *mpeg_pmt_section_codec(struct section_ext *section); + +/** + * Accessor for program_number field of a PMT. + * + * @param pmt PMT pointer. + * @return The program_number. + */ +static inline uint16_t mpeg_pmt_section_program_number(struct mpeg_pmt_section *pmt) +{ + return pmt->head.table_id_ext; +} + +/** + * Convenience iterator for the descriptors field of the mpeg_pmt_section structure. + * + * @param pmt Pointer to the mpeg_pmt_section structure. + * @param pos Variable holding a pointer to the current descriptor. + */ +#define mpeg_pmt_section_descriptors_for_each(pmt, pos) \ + for ((pos) = mpeg_pmt_section_descriptors_first(pmt); \ + (pos); \ + (pos) = mpeg_pmt_section_descriptors_next(pmt, pos)) + +/** + * Convenience iterator for the streams field of the mpeg_pmt_section structure. + * + * @param pmt Pointer to the mpeg_pmt_section structure. + * @param pos Variable holding a pointer to the current mpeg_pmt_stream. + */ +#define mpeg_pmt_section_streams_for_each(pmt, pos) \ + for ((pos) = mpeg_pmt_section_streams_first(pmt); \ + (pos); \ + (pos) = mpeg_pmt_section_streams_next(pmt, pos)) + +/** + * Convenience iterator for the descriptors field of an mpeg_pmt_stream structure. + * + * @param stream Pointer to the mpeg_pmt_stream structure. + * @param pos Variable holding a pointer to the current descriptor. + */ +#define mpeg_pmt_stream_descriptors_for_each(stream, pos) \ + for ((pos) = mpeg_pmt_stream_descriptors_first(stream); \ + (pos); \ + (pos) = mpeg_pmt_stream_descriptors_next(stream, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct descriptor * + mpeg_pmt_section_descriptors_first(struct mpeg_pmt_section * pmt) +{ + if (pmt->program_info_length == 0) + return NULL; + + return (struct descriptor *) + ((uint8_t *) pmt + sizeof(struct mpeg_pmt_section)); +} + +static inline struct descriptor * + mpeg_pmt_section_descriptors_next(struct mpeg_pmt_section *pmt, + struct descriptor* pos) +{ + return next_descriptor((uint8_t *) pmt + sizeof(struct mpeg_pmt_section), + pmt->program_info_length, + pos); +} + +static inline struct mpeg_pmt_stream * + mpeg_pmt_section_streams_first(struct mpeg_pmt_section * pmt) +{ + size_t pos = sizeof(struct mpeg_pmt_section) + pmt->program_info_length; + + if (pos >= section_ext_length(&pmt->head)) + return NULL; + + return (struct mpeg_pmt_stream *)((uint8_t *)pmt + pos); +} + +static inline struct mpeg_pmt_stream * + mpeg_pmt_section_streams_next(struct mpeg_pmt_section * pmt, + struct mpeg_pmt_stream * pos) +{ + uint8_t *end = (uint8_t*) pmt + section_ext_length(&pmt->head); + uint8_t *next = (uint8_t *) pos + sizeof(struct mpeg_pmt_stream) + + pos->es_info_length; + + if (next >= end) + return NULL; + + return (struct mpeg_pmt_stream *) next; +} + +static inline struct descriptor * + mpeg_pmt_stream_descriptors_first(struct mpeg_pmt_stream *stream) +{ + if (stream->es_info_length == 0) + return NULL; + + return (struct descriptor *) + ((uint8_t*) stream + sizeof(struct mpeg_pmt_stream)); +} + +static inline struct descriptor * + mpeg_pmt_stream_descriptors_next(struct mpeg_pmt_stream *stream, + struct descriptor* pos) +{ + return next_descriptor((uint8_t *) stream + sizeof(struct mpeg_pmt_stream), + stream->es_info_length, + pos); +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/private_data_indicator_descriptor.h b/lib/libucsi/mpeg/private_data_indicator_descriptor.h new file mode 100644 index 0000000..80e8ef3 --- /dev/null +++ b/lib/libucsi/mpeg/private_data_indicator_descriptor.h @@ -0,0 +1,63 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_PRIVATE_DATA_INDICATOR_DESCRIPTOR +#define _UCSI_MPEG_PRIVATE_DATA_INDICATOR_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * mpeg_private_data_indicator_descriptor structure + */ +struct mpeg_private_data_indicator_descriptor { + struct descriptor d; + + uint32_t private_data_indicator; +} __ucsi_packed; + +/** + * Process an mpeg_private_data_indicator_descriptor structure. + * + * @param d Pointer to the generic descriptor structure. + * @return Pointer to the mpeg_private_data_indicator_descriptor, or NULL on error. + */ +static inline struct mpeg_private_data_indicator_descriptor* + mpeg_private_data_indicator_descriptor_codec(struct descriptor* d) +{ + if (d->len != (sizeof(struct mpeg_private_data_indicator_descriptor) - 2)) + return NULL; + + bswap32((uint8_t*) d + 2); + + return (struct mpeg_private_data_indicator_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/registration_descriptor.h b/lib/libucsi/mpeg/registration_descriptor.h new file mode 100644 index 0000000..df5c186 --- /dev/null +++ b/lib/libucsi/mpeg/registration_descriptor.h @@ -0,0 +1,91 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_REGISTRATION_DESCRIPTOR +#define _UCSI_MPEG_REGISTRATION_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * mpeg_registration_descriptor structure. + */ +struct mpeg_registration_descriptor { + struct descriptor d; + + uint32_t format_identifier; + /* uint8_t additional_id_info[] */ +} __ucsi_packed; + +/** + * Process an mpeg_registration_descriptor. + * + * @param d Pointer to the generic descriptor structure. + * @return Pointer to the mpeg_registration_descriptor structure, or NULL on error. + */ +static inline struct mpeg_registration_descriptor* + mpeg_registration_descriptor_codec(struct descriptor* d) +{ + if (d->len < (sizeof(struct mpeg_registration_descriptor) - 2)) + return NULL; + + bswap32((uint8_t*) d + 2); + + return (struct mpeg_registration_descriptor*) d; +} + +/** + * Retrieve a pointer to the additional_id_info field of the + * mpeg_registration_descriptor structure. + * + * @param d Pointer to the mpeg_registration_descriptor structure. + * @return Pointer to the field. + */ +static inline uint8_t * + mpeg_registration_descriptor_additional_id_info(struct mpeg_registration_descriptor *d) +{ + return (uint8_t *) d + sizeof(struct mpeg_registration_descriptor); +} + +/** + * Determine number of bytes in the additional_id_info field of the + * mpeg_registration_descriptor structure. + * + * @param d Pointer to the mpeg_registration_descriptor structure. + * @return Number of bytes. + */ + +static inline int + mpeg_registration_descriptor_additional_id_info_length(struct mpeg_registration_descriptor *d) +{ + return d->d.len - 4; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/section.h b/lib/libucsi/mpeg/section.h new file mode 100644 index 0000000..7dbff93 --- /dev/null +++ b/lib/libucsi/mpeg/section.h @@ -0,0 +1,58 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_SECTION_H +#define _UCSI_MPEG_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/mpeg/cat_section.h> +#include <libucsi/mpeg/odsmt_section.h> +#include <libucsi/mpeg/pat_section.h> +#include <libucsi/mpeg/pmt_section.h> +#include <libucsi/mpeg/tsdt_section.h> +#include <libucsi/mpeg/metadata_section.h> + +#define TRANSPORT_PAT_PID 0x00 +#define TRANSPORT_CAT_PID 0x01 +#define TRANSPORT_TSDT_PID 0x02 + +/** + * Enumeration of MPEG section tags. + */ +enum mpeg_section_tag { + stag_mpeg_program_association = 0x00, + stag_mpeg_conditional_access = 0x01, + stag_mpeg_program_map = 0x02, + stag_mpeg_transport_stream_description = 0x03, + stag_mpeg_iso14496_scene_description = 0x04, + stag_mpeg_iso14496_object_description = 0x05, + stag_mpeg_metadata = 0x06, +}; + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/sl_descriptor.h b/lib/libucsi/mpeg/sl_descriptor.h new file mode 100644 index 0000000..ab086e3 --- /dev/null +++ b/lib/libucsi/mpeg/sl_descriptor.h @@ -0,0 +1,63 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_SL_DESCRIPTOR +#define _UCSI_MPEG_SL_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * mpeg_sl_descriptor structure. + */ +struct mpeg_sl_descriptor { + struct descriptor d; + + uint16_t es_id; +} __ucsi_packed; + +/** + * Process an mpeg_sl_descriptor. + * + * @param d The generic descriptor structure. + * @return Pointer to an mpeg_sl_descriptor structure, or NULL on error. + */ +static inline struct mpeg_sl_descriptor* + mpeg_sl_descriptor_codec(struct descriptor* d) +{ + if (d->len != (sizeof(struct mpeg_sl_descriptor) - 2)) + return NULL; + + bswap16((uint8_t*) d + 2); + + return (struct mpeg_sl_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/smoothing_buffer_descriptor.h b/lib/libucsi/mpeg/smoothing_buffer_descriptor.h new file mode 100644 index 0000000..5e6ad33 --- /dev/null +++ b/lib/libucsi/mpeg/smoothing_buffer_descriptor.h @@ -0,0 +1,66 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_SMOOTHING_BUFFER_DESCRIPTOR +#define _UCSI_MPEG_SMOOTHING_BUFFER_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * mpeg_smoothing_buffer_descriptor structure. + */ +struct mpeg_smoothing_buffer_descriptor { + struct descriptor d; + + EBIT4(uint64_t reserved_1 : 2; , + uint64_t sb_leak_rate :22; , + uint64_t reserved_2 : 2; , + uint64_t sb_size :22; ); +} __ucsi_packed; + +/** + * Process an mpeg_smoothing_buffer_descriptor. + * + * @param d The generic descriptor structure. + * @return Pointer to mpeg_smoothing_buffer_descriptor, or NULL on error. + */ +static inline struct mpeg_smoothing_buffer_descriptor* + mpeg_smoothing_buffer_descriptor_codec(struct descriptor* d) +{ + if (d->len != (sizeof(struct mpeg_smoothing_buffer_descriptor) - 2)) + return NULL; + + bswap48((uint8_t*) d + 2); + + return (struct mpeg_smoothing_buffer_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/std_descriptor.h b/lib/libucsi/mpeg/std_descriptor.h new file mode 100644 index 0000000..2625a41 --- /dev/null +++ b/lib/libucsi/mpeg/std_descriptor.h @@ -0,0 +1,62 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_STD_DESCRIPTOR +#define _UCSI_MPEG_STD_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * mpeg_std_descriptor structure. + */ +struct mpeg_std_descriptor { + struct descriptor d; + + EBIT2(uint8_t reserved : 7; , + uint8_t leak_valid_flag : 1; ); +} __ucsi_packed; + +/** + * Process an mpeg_std_descriptor. + * + * @param d Pointer to the generic descriptor structure. + * @return Pointer to the mpeg_std_descriptor, or NULL on error. + */ +static inline struct mpeg_std_descriptor* + mpeg_std_descriptor_codec(struct descriptor* d) +{ + if (d->len != (sizeof(struct mpeg_std_descriptor) - 2)) + return NULL; + + return (struct mpeg_std_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/system_clock_descriptor.h b/lib/libucsi/mpeg/system_clock_descriptor.h new file mode 100644 index 0000000..681641f --- /dev/null +++ b/lib/libucsi/mpeg/system_clock_descriptor.h @@ -0,0 +1,65 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_SYSTEM_CLOCK_DESCRIPTOR +#define _UCSI_MPEG_SYSTEM_CLOCK_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * mpeg_system_clock_descriptor structure. + */ +struct mpeg_system_clock_descriptor { + struct descriptor d; + + EBIT3(uint8_t external_clock_reference_indicator : 1; , + uint8_t reserved_1 : 1; , + uint8_t clock_accuracy_integer : 6; ); + EBIT2(uint8_t clock_accuracy_exponent : 3; , + uint8_t reserved_2 : 5; ); +} __ucsi_packed; + +/** + * Process an mpeg_system_clock_descriptor. + * + * @param d The generic descriptor structure. + * @return Pointer to a mpeg_system_clock_descriptor structure, or NULL on error. + */ +static inline struct mpeg_system_clock_descriptor* + mpeg_system_clock_descriptor_codec(struct descriptor* d) +{ + if (d->len != (sizeof(struct mpeg_system_clock_descriptor) - 2)) + return NULL; + + return (struct mpeg_system_clock_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/target_background_grid_descriptor.h b/lib/libucsi/mpeg/target_background_grid_descriptor.h new file mode 100644 index 0000000..7394e82 --- /dev/null +++ b/lib/libucsi/mpeg/target_background_grid_descriptor.h @@ -0,0 +1,66 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_TARGET_BACKGROUND_GRID_DESCRIPTOR +#define _UCSI_MPEG_TARGET_BACKGROUND_GRID_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * mpeg_target_background_grid_descriptor structure. + */ +struct mpeg_target_background_grid_descriptor { + struct descriptor d; + + EBIT3(uint32_t horizontal_size : 14; , + uint32_t vertical_size : 14; , + uint32_t aspect_ratio_information : 4; ); +} __ucsi_packed; + +/** + * Process an mpeg_target_background_grid_descriptor structure. + * + * @param d Pointer to the generic descriptor structure. + * @return Pointer to the mpeg_target_background_grid_descriptor structure, or + * NULL on error. + */ +static inline struct mpeg_target_background_grid_descriptor* + mpeg_target_background_grid_descriptor_codec(struct descriptor* d) +{ + if (d->len != (sizeof(struct mpeg_target_background_grid_descriptor) - 2)) + return NULL; + + bswap32((uint8_t*) d + 2); + + return (struct mpeg_target_background_grid_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/tsdt_section.c b/lib/libucsi/mpeg/tsdt_section.c new file mode 100644 index 0000000..fec9dd7 --- /dev/null +++ b/lib/libucsi/mpeg/tsdt_section.c @@ -0,0 +1,34 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <libucsi/mpeg/tsdt_section.h> + +struct mpeg_tsdt_section * mpeg_tsdt_section_codec(struct section_ext * ext) +{ + uint8_t * buf = (uint8_t *)ext; + size_t pos = sizeof(struct section_ext); + + if (verify_descriptors(buf + pos, + section_ext_length(ext) - sizeof(struct mpeg_tsdt_section))) + return NULL; + + return (struct mpeg_tsdt_section *)ext; +} diff --git a/lib/libucsi/mpeg/tsdt_section.h b/lib/libucsi/mpeg/tsdt_section.h new file mode 100644 index 0000000..2bbae02 --- /dev/null +++ b/lib/libucsi/mpeg/tsdt_section.h @@ -0,0 +1,94 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_TSDT_SECTION_H +#define _UCSI_MPEG_TSDT_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/section.h> + +/** + * mpeg_tsdt_section structure. + */ +struct mpeg_tsdt_section { + struct section_ext head; + + /* struct descriptor descriptors[] */ +} __ucsi_packed; + +/** + * Process an mpeg_tsdt_section structure. + * + * @param section Pointer to the section_ext structure. + * @return Pointer to the mpeg_tsdt_section structure, or NULL on error. + */ +extern struct mpeg_tsdt_section *mpeg_tsdt_section_codec(struct section_ext *section); + +/** + * Convenience iterator for descriptors field. + * + * @param tsdt Pointer to the mpeg_tsdt_section structure. + * @param pos Variable holding a pointer to the current descriptor. + */ +#define mpeg_tsdt_section_descriptors_for_each(tsdt, pos) \ + for ((pos) = mpeg_tsdt_section_descriptors_first(tsdt); \ + (pos); \ + (pos) = mpeg_tsdt_section_descriptors_next(tsdt, pos)) + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct descriptor * + mpeg_tsdt_section_descriptors_first(struct mpeg_tsdt_section * tsdt) +{ + size_t pos = sizeof(struct mpeg_tsdt_section); + + if (pos >= section_ext_length(&tsdt->head)) + return NULL; + + return (struct descriptor*)((uint8_t *) tsdt + pos); +} + +static inline struct descriptor * + mpeg_tsdt_section_descriptors_next(struct mpeg_tsdt_section *tsdt, + struct descriptor* pos) +{ + return next_descriptor((uint8_t *) tsdt + sizeof(struct mpeg_tsdt_section), + section_ext_length(&tsdt->head) - sizeof(struct mpeg_tsdt_section), + pos); +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/types.h b/lib/libucsi/mpeg/types.h new file mode 100644 index 0000000..300cb23 --- /dev/null +++ b/lib/libucsi/mpeg/types.h @@ -0,0 +1,127 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_TYPES_H +#define _UCSI_MPEG_TYPES_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +/** + * Known stream types. + */ +enum { + MPEG_STREAM_TYPE_ISO11172_VIDEO = 0x01, + MPEG_STREAM_TYPE_ISO13818_2_VIDEO = 0x02, + MPEG_STREAM_TYPE_ISO11172_AUDIO = 0x03, + MPEG_STREAM_TYPE_ISO13818_3_AUDIO = 0x04, + MPEG_STREAM_TYPE_ISO13818_1_PRIVATE_SECTIONS = 0x05, + MPEG_STREAM_TYPE_ISO13818_1_PRIVATE_PES = 0x06, + MPEG_STREAM_TYPE_ISO13522_MHEG = 0x07, + MPEG_STREAM_TYPE_ISO13818_DSMCC = 0x08, + MPEG_STREAM_TYPE_ITUH222_1 = 0x09, + MPEG_STREAM_TYPE_ISO13818_6_A = 0x0a, + MPEG_STREAM_TYPE_ISO13818_6_B = 0x0b, + MPEG_STREAM_TYPE_ISO13818_6_C = 0x0c, + MPEG_STREAM_TYPE_ISO13818_6_D = 0x0d, + MPEG_STREAM_TYPE_ISO13818_1_AUX = 0x0e, + MPEG_STREAM_TYPE_ISO13818_7_AUDIO_ADTS = 0x0f, + MPEG_STREAM_TYPE_ISO14496_2_VISUAL = 0x10, + MPEG_STREAM_TYPE_ISO14496_3_AUDIO_LATM = 0x11, + MPEG_STREAM_TYPE_ISO14496_1_PES = 0x12, + MPEG_STREAM_TYPE_ISO14496_1_SECTIONS = 0x13, + MPEG_STREAM_TYPE_ISO14496_6_SYNCDOWNLOAD = 0x14, + MPEG_STREAM_TYPE_METADATA_PES = 0x15, + MPEG_STREAM_TYPE_METADATA_SECTIONS = 0x16, + MPEG_STREAM_TYPE_METADATA_DSMCC_DATA = 0x17, + MPEG_STREAM_TYPE_METADATA_DSMCC_OBJECT = 0x18, + MPEG_STREAM_TYPE_METADATA_SYNCDOWNLOAD = 0x19, +}; + +/** + * Metadata formats + */ +enum { + MPEG_METADATA_FORMAT_ISO15938_1_TEM = 0x01, + MPEG_METADATA_FORMAT_ISO15938_1_BIM = 0x02, + MPEG_METADATA_FORMAT_METADATA_APPLICATION_FORMAT = 0x3F, + MPEG_METADATA_FORMAT_METADATA_APPLICATION_FORMAT_ID = 0xFF, +}; + +/** + * MPEG 4 audio profile and levels. + */ +enum { + MPEG4_AUDIO_PROFILE_MAIN_LEVEL_1 = 0x10, + MPEG4_AUDIO_PROFILE_MAIN_LEVEL_2 = 0x11, + MPEG4_AUDIO_PROFILE_MAIN_LEVEL_3 = 0x12, + MPEG4_AUDIO_PROFILE_MAIN_LEVEL_4 = 0x13, + + MPEG4_AUDIO_PROFILE_SCALABLE_LEVEL_1 = 0x18, + MPEG4_AUDIO_PROFILE_SCALABLE_LEVEL_2 = 0x19, + MPEG4_AUDIO_PROFILE_SCALABLE_LEVEL_3 = 0x1a, + MPEG4_AUDIO_PROFILE_SCALABLE_LEVEL_4 = 0x1b, + + MPEG4_AUDIO_PROFILE_SPEECH_LEVEL_1 = 0x20, + MPEG4_AUDIO_PROFILE_SPEECH_LEVEL_2 = 0x21, + + MPEG4_AUDIO_PROFILE_SYNTHESIS_LEVEL_1 = 0x28, + MPEG4_AUDIO_PROFILE_SYNTHESIS_LEVEL_2 = 0x29, + MPEG4_AUDIO_PROFILE_SYNTHESIS_LEVEL_3 = 0x2a, + + MPEG4_AUDIO_PROFILE_HQ_LEVEL_1 = 0x30, + MPEG4_AUDIO_PROFILE_HQ_LEVEL_2 = 0x31, + MPEG4_AUDIO_PROFILE_HQ_LEVEL_3 = 0x32, + MPEG4_AUDIO_PROFILE_HQ_LEVEL_4 = 0x33, + MPEG4_AUDIO_PROFILE_HQ_LEVEL_5 = 0x34, + MPEG4_AUDIO_PROFILE_HQ_LEVEL_6 = 0x35, + MPEG4_AUDIO_PROFILE_HQ_LEVEL_7 = 0x36, + MPEG4_AUDIO_PROFILE_HQ_LEVEL_8 = 0x37, + + MPEG4_AUDIO_PROFILE_LOW_DELAY_LEVEL_1 = 0x38, + MPEG4_AUDIO_PROFILE_LOW_DELAY_LEVEL_2 = 0x39, + MPEG4_AUDIO_PROFILE_LOW_DELAY_LEVEL_3 = 0x3a, + MPEG4_AUDIO_PROFILE_LOW_DELAY_LEVEL_4 = 0x3b, + MPEG4_AUDIO_PROFILE_LOW_DELAY_LEVEL_5 = 0x3c, + MPEG4_AUDIO_PROFILE_LOW_DELAY_LEVEL_6 = 0x3d, + MPEG4_AUDIO_PROFILE_LOW_DELAY_LEVEL_7 = 0x3e, + MPEG4_AUDIO_PROFILE_LOW_DELAY_LEVEL_8 = 0x3f, + + MPEG4_AUDIO_PROFILE_NATURAL_LEVEL_1 = 0x40, + MPEG4_AUDIO_PROFILE_NATURAL_LEVEL_2 = 0x41, + MPEG4_AUDIO_PROFILE_NATURAL_LEVEL_3 = 0x42, + MPEG4_AUDIO_PROFILE_NATURAL_LEVEL_4 = 0x43, + + MPEG4_AUDIO_PROFILE_MOBILE_LEVEL_1 = 0x48, + MPEG4_AUDIO_PROFILE_MOBILE_LEVEL_2 = 0x49, + MPEG4_AUDIO_PROFILE_MOBILE_LEVEL_3 = 0x4a, + MPEG4_AUDIO_PROFILE_MOBILE_LEVEL_4 = 0x4b, + MPEG4_AUDIO_PROFILE_MOBILE_LEVEL_5 = 0x4c, + MPEG4_AUDIO_PROFILE_MOBILE_LEVEL_6 = 0x4d, +}; + + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/video_stream_descriptor.h b/lib/libucsi/mpeg/video_stream_descriptor.h new file mode 100644 index 0000000..14e9196 --- /dev/null +++ b/lib/libucsi/mpeg/video_stream_descriptor.h @@ -0,0 +1,101 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_VIDEO_STREAM_DESCRIPTOR +#define _UCSI_MPEG_VIDEO_STREAM_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * The mpeg_video_stream_descriptor structure + */ +struct mpeg_video_stream_descriptor { + struct descriptor d; + + EBIT5(uint8_t multiple_frame_rate_flag : 1; , + uint8_t frame_rate_code : 4; , + uint8_t mpeg_1_only_flag : 1; , + uint8_t constrained_parameter_flag : 1; , + uint8_t still_picture_flag : 1; ); + /* if (mpeg_1_only_flag == 0) struct mpeg_video_stream_extra extra */ +} __ucsi_packed; + +/** + * The mpeg_video_stream_extra - only present in non-MPEG1-only streams. + */ +struct mpeg_video_stream_extra { + uint8_t profile_and_level_indication; + EBIT3(uint8_t chroma_format : 2; , + uint8_t frame_rate_extension : 1; , + uint8_t reserved : 5; ); +} __ucsi_packed; + +/** + * Process an mpeg_video_stream_descriptor structure. + * + * @param d Pointer to the generic descriptor structure. + * @return Pointer to the mpeg_video_stream_descriptor, or NULL on error. + */ +static inline struct mpeg_video_stream_descriptor* + mpeg_video_stream_descriptor_codec(struct descriptor* d) +{ + struct mpeg_video_stream_descriptor* vsd = + (struct mpeg_video_stream_descriptor*) d; + + if (d->len < (sizeof(struct mpeg_video_stream_descriptor) - 2)) + return NULL; + + if (!vsd->mpeg_1_only_flag) { + if (d->len != (sizeof(struct mpeg_video_stream_descriptor) + + sizeof(struct mpeg_video_stream_extra) - 2)) + return NULL; + } + + return (struct mpeg_video_stream_descriptor*) d; +} + +/** + * Get a pointer to the mpeg_video_stream_extra structure. + * + * @param d Pointer to the mpeg_video_stream_descriptor structure. + * @return Pointer to the mpeg_video_stream_extra structure, or NULL on error. + */ +static inline struct mpeg_video_stream_extra* + mpeg_video_stream_descriptor_extra(struct mpeg_video_stream_descriptor* d) +{ + if (d->mpeg_1_only_flag != 0) + return NULL; + + return (struct mpeg_video_stream_extra*) + ((uint8_t*) d + sizeof(struct mpeg_video_stream_descriptor)); +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/mpeg/video_window_descriptor.h b/lib/libucsi/mpeg/video_window_descriptor.h new file mode 100644 index 0000000..a9a63c7 --- /dev/null +++ b/lib/libucsi/mpeg/video_window_descriptor.h @@ -0,0 +1,64 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_MPEG_VIDEO_WINDOW_DESCRIPTOR +#define _UCSI_MPEG_VIDEO_WINDOW_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> + +/** + * mpeg_video_window_descriptor structure. + */ +struct mpeg_video_window_descriptor { + struct descriptor d; + + EBIT3(uint32_t horizontal_offset : 14; , + uint32_t vertical_offset : 14; , + uint32_t window_priority : 4; ); +} __ucsi_packed; + +/** + * Process an mpeg_video_window_descriptor. + * + * @param d Pointer to the generic descriptor structure. + * @return Pointer to the mpeg_video_window_descriptor structure, or NULL on error. + */ +static inline struct mpeg_video_window_descriptor* + mpeg_video_window_descriptor_codec(struct descriptor* d) +{ + if (d->len != (sizeof(struct mpeg_video_window_descriptor) - 2)) + return NULL; + + bswap32((uint8_t*) d + 2); + + return (struct mpeg_video_window_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/section.h b/lib/libucsi/section.h new file mode 100644 index 0000000..53ad07f --- /dev/null +++ b/lib/libucsi/section.h @@ -0,0 +1,253 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_SECTION_H +#define _UCSI_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/endianops.h> +#include <libucsi/descriptor.h> +#include <libucsi/crc32.h> +#include <stdint.h> +#include <string.h> + +#define CRC_SIZE 4 + + +/** + * Generic section header. + */ +struct section { + uint8_t table_id; + EBIT4(uint16_t syntax_indicator : 1; , + uint16_t private_indicator : 1; , /* 2.4.4.10 */ + uint16_t reserved : 2; , + uint16_t length :12; ); +} __ucsi_packed; + +/** + * Generic extended section header structure. + */ +struct section_ext { + uint8_t table_id; + EBIT4(uint16_t syntax_indicator : 1; , + uint16_t private_indicator : 1; , /* 2.4.4.10 */ + uint16_t reserved : 2; , + uint16_t length :12; ); + + uint16_t table_id_ext; + EBIT3(uint8_t reserved1 : 2; , + uint8_t version_number : 5; , + uint8_t current_next_indicator : 1; ); + uint8_t section_number; + uint8_t last_section_number; +} __ucsi_packed; + +/** + * Structure for keeping track of sections of a PSI table. + */ +struct psi_table_state { + uint8_t version_number; + uint16_t next_section_number; + uint8_t complete:1; + uint8_t new_table:1; +} __ucsi_packed; + + +/** + * Determine the total length of a section, including the header. + * + * @param section The parsed section structure. + * @return The length. + */ +static inline size_t section_length(struct section *section) +{ + return section->length + sizeof(struct section); +} + +/** + * Determine the total length of an extended section, including the header, + * but omitting the CRC. + * + * @param section The parsed section_ext structure. + * @return The length. + */ +static inline size_t section_ext_length(struct section_ext * section) +{ + return section->length + sizeof(struct section) - CRC_SIZE; +} + +/** + * Process a section structure in-place. + * + * @param buf Pointer to the data. + * @param len Length of data. + * @return Pointer to the section structure, or NULL if invalid. + */ +static inline struct section * section_codec(uint8_t * buf, size_t len) +{ + struct section * ret = (struct section *)buf; + + if (len < 3) + return NULL; + + bswap16(buf+1); + + if (len != ret->length + 3U) + return NULL; + + return ret; +} + +/** + * Some sections have a CRC even though they are not section_exts. + * This function is to allow checking of them. + * + * @param section Pointer to the processed section structure. + * @return Nonzero on error, or 0 if the CRC was correct. + */ +static inline int section_check_crc(struct section *section) +{ + uint8_t * buf = (uint8_t *) section; + size_t len = section_length(section); + uint32_t crc; + + /* the crc check has to be performed on the unswapped data */ + bswap16(buf+1); + crc = crc32(CRC32_INIT, buf, len); + bswap16(buf+1); + + /* the crc check includes the crc value, + * the result should therefore be zero. + */ + if (crc) + return -1; + return 0; +} + + +/** + * Decode an extended section structure. + * + * @param section Pointer to the processed section structure. + * @param check_crc If 1, the CRC of the section will also be checked. + * @return Pointer to the parsed section_ext structure, or NULL if invalid. + */ +static inline struct section_ext * section_ext_decode(struct section * section, + int check_crc) +{ + if (section->syntax_indicator == 0) + return NULL; + + if (check_crc) { + if (section_check_crc(section)) + return NULL; + } + + bswap16((uint8_t *)section + sizeof(struct section)); + + return (struct section_ext *)section; +} + +/** + * Encode an extended section structure for transmission. + * + * @param section Pointer to the section_ext structure. + * @param update_crc If 1, the CRC of the section will also be updated. + * @return Pointer to the encoded section_ext structure, or NULL if invalid. + */ +static inline struct section_ext * section_ext_encode(struct section_ext* section, + int update_crc) +{ + if (section->syntax_indicator == 0) + return NULL; + + bswap16((uint8_t *)section + sizeof(struct section)); + + if (update_crc) { + uint8_t * buf = (uint8_t *) section; + int len = sizeof(struct section) + section->length; + uint32_t crc; + + /* the crc has to be performed on the swapped data */ + bswap16(buf+1); + crc = crc32(CRC32_INIT, buf, len-4); + bswap16(buf+1); + + /* update the CRC */ + *((uint32_t*) (buf+len-4)) = crc; + bswap32(buf+len-4); + } + + return (struct section_ext *)section; +} + +/** + * Reset a psi_table_state structure. + * + * @param tstate The structure to reset. + */ +static inline void psi_table_state_reset(struct psi_table_state *tstate) +{ + tstate->version_number = 0xff; +} + +/** + * Check if a supplied section_ext is something we want to process. + * + * @param section The parsed section_ext structure. + * @param tstate The state structure for this PSI table. + * @return 0=> not useful. nonzero => useful. + */ +static inline int section_ext_useful(struct section_ext *section, struct psi_table_state *tstate) +{ + if ((section->version_number == tstate->version_number) && tstate->complete) + return 0; + if (section->version_number != tstate->version_number) { + if (section->section_number != 0) + return 0; + + tstate->next_section_number = 0; + tstate->complete = 0; + tstate->version_number = section->version_number; + tstate->new_table = 1; + } else if (section->section_number == tstate->next_section_number) { + tstate->new_table = 0; + } else { + return 0; + } + + tstate->next_section_number++; + if (section->last_section_number < tstate->next_section_number) { + tstate->complete = 1; + } + + return 1; +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/section_buf.c b/lib/libucsi/section_buf.c new file mode 100644 index 0000000..35d465e --- /dev/null +++ b/lib/libucsi/section_buf.c @@ -0,0 +1,173 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <errno.h> +#include <string.h> +#include "section_buf.h" + +#define SECTION_HDR_SIZE 3 +#define SECTION_PAD 0xff + +int section_buf_init(struct section_buf *section, int max) +{ + if (max < SECTION_HDR_SIZE) + return -EINVAL; + + memset(section, 0, sizeof(struct section_buf)); + section->max = max; /* max size of data */ + section->len = SECTION_HDR_SIZE; + section->wait_pdu = 1; + + return 0; +} + +int section_buf_add(struct section_buf *section, uint8_t* frag, int len, int *section_status) +{ + int copy; + int used = 0; + uint8_t *data; + uint8_t *pos = (uint8_t*) section + sizeof(struct section_buf) + section->count; + + /* have we finished? */ + if (section->header && (section->len == section->count)) { + *section_status = 1; + return 0; + } + + /* skip over section padding bytes */ + *section_status = 0; + if (section->count == 0) { + while(len && (*frag == SECTION_PAD)) { + frag++; + len--; + used++; + } + + if (len == 0) + return used; + } + + /* grab the header to get the section length */ + if (!section->header) { + /* copy the header frag */ + copy = SECTION_HDR_SIZE - section->count; + if (copy > len) + copy = len; + memcpy(pos, frag, copy); + section->count += copy; + pos += copy; + frag += copy; + used += copy; + len -= copy; + + /* we need 3 bytes for the section header */ + if (section->count != SECTION_HDR_SIZE) + return used; + + /* work out the length & check it isn't too big */ + data = (uint8_t*) section + sizeof(struct section_buf); + section->len = SECTION_HDR_SIZE + (((data[1] & 0x0f) << 8) | data[2]); + if (section->len > section->max) { + *section_status = -ERANGE; + return len + used; + } + + /* update fields */ + section->header = 1; + } + + /* accumulate frag */ + copy = section->len - section->count; + if (copy > len) + copy = len; + memcpy(pos, frag, copy); + section->count += copy; + used += copy; + + /* have we finished? */ + if (section->header && (section->len == section->count)) + *section_status = 1; + + /* return number of bytes used */ + return used; +} + +int section_buf_add_transport_payload(struct section_buf *section, + uint8_t* payload, int len, + int pdu_start, int *section_status) +{ + int used = 0; + int tmp; + + /* have we finished? */ + if (section->header && (section->len == section->count)) { + *section_status = 1; + return 0; + } + + /* don't bother if we're waiting for a PDU */ + *section_status = 0; + if (section->wait_pdu && (!pdu_start)) + return len; + + /* if we're at a PDU start, we need extra handling for the extra first + * byte giving the offset to the start of the next section. */ + if (pdu_start) { + /* we have received a pdu */ + section->wait_pdu = 0; + + /* work out the offset to the _next_ payload */ + int offset = payload[0]; + if ((offset+1) > len) { + section->wait_pdu = 1; + *section_status = -EINVAL; + return len; + } + + /* accumulate the end if we need to */ + if (section->count != 0) { + /* add the final fragment. */ + tmp = section_buf_add(section, payload + 1, offset, section_status); + + /* the stream said this was the final fragment + * (PDU START bit) - check that it really was! */ + if ((tmp != offset) || section_buf_remaining(section) || (*section_status != 1)) { + *section_status = -ERANGE; + section->wait_pdu = 1; + return 1 + tmp; + } + + /* it is complete - return the number of bytes we used */ + return 1 + tmp; + } + + /* otherwise, we skip the end of the previous section, and + * start accumulating the new data. */ + used = 1 + offset; + } + + /* ok, just accumulate the data as normal */ + tmp = section_buf_add(section, payload+used, len - used, section_status); + if (*section_status < 0) { + section->wait_pdu = 1; + } + + return used + tmp; +} diff --git a/lib/libucsi/section_buf.h b/lib/libucsi/section_buf.h new file mode 100644 index 0000000..52d2f84 --- /dev/null +++ b/lib/libucsi/section_buf.h @@ -0,0 +1,124 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_SECTION_BUF_H +#define _UCSI_SECTION_BUF_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <stdint.h> + +#define DVB_MAX_SECTION_BYTES 4096 + +/** + * Buffer used to keep track of section fragments. You should allocate an + * area of memory of size (sizeof(section_buf) + <maxsectionsize>), and pass that area + * to section_buf_init() to set it up. + */ +struct section_buf { + uint32_t max; /* maximum size of section - setup by section_buf_init() */ + uint32_t count; /* number of bytes currently accumulated */ + uint32_t len; /* total number of bytes expected in the complete section */ + uint8_t header:1; /* flag indicating the section header has been commpletely received */ + uint8_t wait_pdu:1;/* flag indicating to wait till the next PDU start */ + /* uint8_t data[] */ +}; + +/** + * Initialise a section_buf structure. + * + * @param section The section_buf to initialise. + * @param max Maximum number of bytes in section (must be > 3) + * @return 0 on success, nonzero on error. + */ +extern int section_buf_init(struct section_buf *section, int max); + +/** + * Reset a section_buf structure (e.g. if a discontinuity occurred). The + * section_buf will wait for the first PDU start indicator. + * + * @param section The section_buf to reset. + */ +static inline void section_buf_reset(struct section_buf *section) +{ + int tmp = section->wait_pdu; + section_buf_init(section, section->max); + section->wait_pdu = tmp; +} + +/** + * Add a data fragment to a section_buf. + * + * @param section section_buf to add to. + * @param frag Pointer to data fragment. + * @param len Number of bytes of data. + * @param section_status 0: nothing special. 1: section complete. -ERANGE indicates that the + * section is larger than section->max. + * @return Number of bytes which were consumed. + */ +extern int section_buf_add(struct section_buf *section, uint8_t* frag, int len, int *section_status); + +/** + * Add a transport packet PSI payload to a section_buf. This takes into account + * the extra byte present in PDU_START flagged packets. + * + * @param section section_buf to add to. + * @param payload Pointer to packet payload data. + * @param len Number of bytes of data. + * @param pdu_start True if the payload_unit_start_indicator flag was set in the + * TS packet. + * @param section_status 0: nothing special. 1: section complete. -ERANGE indicates that the + * section is larger than section->max. -EINVAL indicates the pointer_field was completely + * invalid (too large). + */ +extern int section_buf_add_transport_payload(struct section_buf *section, + uint8_t* payload, int len, + int pdu_start, int *section_status); + +/** + * Get the number of bytes left to be received in a section_buf. + * + * @param section The section_buf concerned. + * @return The number of bytes. + */ +static inline int section_buf_remaining(struct section_buf *section) +{ + return section->len - section->count; +} + +/** + * Return a pointer to the start of the data in the section_buf. + * + * @param section The section_buf concerned. + * @return The data. + */ +static inline uint8_t* section_buf_data(struct section_buf *section) +{ + return (uint8_t*) section + sizeof(struct section_buf); +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/testrecord.txt b/lib/libucsi/testrecord.txt new file mode 100644 index 0000000..84d56aa --- /dev/null +++ b/lib/libucsi/testrecord.txt @@ -0,0 +1,146 @@ +libucsi test record. Anything without PASS is either not tested, or is +currently broken. + +Testing means (a) ensure there are no segfaults etc. (b) dump the raw hex, +decode it by hand, and check it matches the output. + +Sections: +PASS mpeg/cat_section.h + mpeg/odsmt_section.h +PASS mpeg/pat_section.h +PASS mpeg/pmt_section.h + mpeg/tsdt_section.h + mpeg/metadata_section.h + +PASS dvb/bat_section.h + dvb/dit_section.h +PASS dvb/eit_section.h + dvb/int_section.h +PASS dvb/nit_section.h + dvb/rst_section.h +PASS dvb/sdt_section.h + dvb/sit_section.h +PASS dvb/st_section.h +PASS dvb/tdt_section.h +PASS dvb/tot_section.h + dvb/tva_container_section.h + +PASS atsc/cvct_section.h + atsc/dccsct_section.h + atsc/dcct_section.h +PASS atsc/eit_section.h +PASS atsc/ett_section.h +PASS atsc/mgt_section.h + atsc/rrt_section.h +PASS atsc/stt_section.h +PASS atsc/tvct_section.h + +Descriptors: +PASS mpeg/audio_stream_descriptor.h +PASS mpeg/ca_descriptor.h + mpeg/content_labelling_descriptor.h +PASS mpeg/copyright_descriptor.h +PASS mpeg/data_stream_alignment_descriptor.h +PASS mpeg/external_es_id_descriptor.h + mpeg/fmc_descriptor.h +PASS mpeg/fmxbuffer_size_descriptor.h + mpeg/hierarchy_descriptor.h + mpeg/ibp_descriptor.h + mpeg/iod_descriptor.h +PASS mpeg/iso_639_language_descriptor.h +PASS mpeg/maximum_bitrate_descriptor.h + mpeg/metadata_descriptor.h + mpeg/metadata_pointer_descriptor.h + mpeg/metadata_std_descriptor.h + mpeg/mpeg4_audio_descriptor.h + mpeg/mpeg4_video_descriptor.h + mpeg/multiplex_buffer_descriptor.h +PASS mpeg/multiplex_buffer_utilization_descriptor.h + mpeg/muxcode_descriptor.h +PASS mpeg/private_data_indicator_descriptor.h +PASS mpeg/registration_descriptor.h + mpeg/sl_descriptor.h +PASS mpeg/smoothing_buffer_descriptor.h +PASS mpeg/std_descriptor.h +PASS mpeg/system_clock_descriptor.h + mpeg/target_background_grid_descriptor.h +PASS mpeg/video_stream_descriptor.h + mpeg/video_window_descriptor.h + + dvb/ac3_descriptor.h + dvb/adaptation_field_data_descriptor.h + dvb/ait_application_descriptor.h + dvb/ait_application_icons_descriptor.h + dvb/ait_application_name_descriptor.h + dvb/ait_external_application_authorisation_descriptor.h + dvb/ancillary_data_descriptor.h + dvb/announcement_support_descriptor.h + dvb/application_signalling_descriptor.h +PASS dvb/bouquet_name_descriptor.h +PASS dvb/ca_identifier_descriptor.h + dvb/cable_delivery_descriptor.h + dvb/cell_frequency_link_descriptor.h + dvb/cell_list_descriptor.h +PASS dvb/component_descriptor.h +PASS dvb/content_descriptor.h + dvb/content_identifier_descriptor.h + dvb/country_availability_descriptor.h + dvb/data_broadcast_descriptor.h +PASS dvb/data_broadcast_id_descriptor.h + dvb/default_authority_descriptor.h + dvb/dsng_descriptor.h + dvb/extended_event_descriptor.h +PASS dvb/frequency_list_descriptor.h +PASS dvb/linkage_descriptor.h +PASS dvb/local_time_offset_descriptor.h + dvb/mhp_data_broadcast_id_descriptor.h + dvb/mosaic_descriptor.h + dvb/multilingual_bouquet_name_descriptor.h +PASS dvb/multilingual_component_descriptor.h + dvb/multilingual_network_name_descriptor.h + dvb/multilingual_service_name_descriptor.h +PASS dvb/network_name_descriptor.h + dvb/nvod_reference_descriptor.h +PASS dvb/parental_rating_descriptor.h + dvb/partial_transport_stream_descriptor.h + dvb/pdc_descriptor.h +PASS dvb/private_data_specifier_descriptor.h + dvb/related_content_descriptor.h + dvb/rnt_rar_over_dvb_stream_descriptor.h + dvb/rnt_rar_over_ip_descriptor.h + dvb/rnt_rnt_scan_descriptor.h + dvb/s2_satellite_delivery_descriptor.h +PASS dvb/satellite_delivery_descriptor.h + dvb/scrambling_descriptor.h + dvb/service_availablility_descriptor.h +PASS dvb/service_descriptor.h + dvb/service_identifier_descriptor.h +PASS dvb/service_list_descriptor.h + dvb/service_move_descriptor.h +PASS dvb/short_event_descriptor.h + dvb/short_smoothing_buffer_descriptor.h +PASS dvb/stream_identifier_descriptor.h +PASS dvb/stuffing_descriptor.h +PASS dvb/subtitling_descriptor.h + dvb/telephone_descriptor.h + dvb/teletext_descriptor.h +PASS dvb/terrestrial_delivery_descriptor.h + dvb/time_shifted_event_descriptor.h + dvb/time_shifted_service_descriptor.h + dvb/transport_stream_descriptor.h + dvb/tva_id_descriptor.h + dvb/vbi_data_descriptor.h + dvb/vbi_teletext_descriptor.h + +PASS atsc/ac3_descriptor.h +PASS atsc/caption_service_descriptor.h + atsc/component_name_descriptor.h +PASS atsc/content_advisory_descriptor.h + atsc/dcc_arriving_request_descriptor.h + atsc/dcc_departing_request_descriptor.h +PASS atsc/extended_channel_name_descriptor.h + atsc/genre_descriptor.h + atsc/rc_descriptor.h +PASS atsc/service_location_descriptor.h +PASS atsc/stuffing_descriptor.h + atsc/time_shifted_service_descriptor.h diff --git a/lib/libucsi/transport_packet.c b/lib/libucsi/transport_packet.c new file mode 100644 index 0000000..ca6c2e1 --- /dev/null +++ b/lib/libucsi/transport_packet.c @@ -0,0 +1,256 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include "transport_packet.h" + +#define CONTINUITY_VALID 0x80 +#define CONTINUITY_DUPESEEN 0x40 + +int transport_packet_values_extract(struct transport_packet *pkt, + struct transport_values *out, + enum transport_value extract) +{ + uint8_t *end = (uint8_t*) pkt + TRANSPORT_PACKET_LENGTH; + uint8_t *adapend; + uint8_t *pos = (uint8_t*) pkt + sizeof(struct transport_packet); + enum transport_value extracted = 0; + enum transport_adaptation_flags adapflags = 0; + enum transport_adaptation_extension_flags adapextflags = 0; + int adaplength = 0; + int adapextlength = 0; + + /* does the packet contain an adaptation field ? */ + if ((pkt->adaptation_field_control & 2) == 0) + goto extract_payload; + + /* get the adaptation field length and skip the byte */ + adaplength = *pos++; + + /* do we actually have any adaptation data? */ + if (adaplength == 0) + goto extract_payload; + + /* sanity check */ + adapend = pos + adaplength; + if (adapend > end) + return -1; + + /* extract the adaptation flags (we must have at least 1 byte to be here) */ + adapflags = *pos++; + + /* do we actually want anything else? */ + if ((extract & 0xffff) == 0) + goto extract_payload; + + /* PCR? */ + if (adapflags & transport_adaptation_flag_pcr) { + if ((pos+6) > adapend) + return -1; + + if (extract & transport_value_pcr) { + uint64_t base = ((uint64_t) pos[0] << 25) | + ((uint64_t) pos[1] << 17) | + ((uint64_t) pos[2] << 9) | + ((uint64_t) pos[3] << 1) | + ((uint64_t) pos[4] >> 7); + uint64_t ext = (((uint64_t) pos[4] & 1) << 8) | + (uint64_t) pos[5]; + out->pcr= base * 300ULL + ext; + extracted |= transport_value_pcr; + } + pos += 6; + } + + /* OPCR? */ + if (adapflags & transport_adaptation_flag_opcr) { + if ((pos+6) > adapend) + return -1; + + if (extract & transport_value_opcr) { + uint64_t base = ((uint64_t) pos[0] << 25) | + ((uint64_t) pos[1] << 17) | + ((uint64_t) pos[2] << 9) | + ((uint64_t) pos[3] << 1) | + ((uint64_t) pos[4] >> 7); + uint64_t ext = (((uint64_t) pos[4] & 1) << 8) | + (uint64_t) pos[5]; + out->opcr= base * 300ULL + ext; + extracted |= transport_value_opcr; + } + pos += 6; + } + + /* splice countdown? */ + if (adapflags & transport_adaptation_flag_splicing_point) { + if ((pos+1) > adapend) + return -1; + + if (extract & transport_value_splice_countdown) { + out->splice_countdown = *pos; + extracted |= transport_value_splice_countdown; + } + pos++; + } + + /* private data? */ + if (adapflags & transport_adaptation_flag_private_data) { + if ((pos+1) > adapend) + return -1; + if ((pos+1+*pos) > adapend) + return -1; + + if (extract & transport_value_private_data) { + out->private_data_length = *pos; + out->private_data = pos + 1; + extracted |= transport_value_private_data; + } + pos += 1 + *pos; + } + + /* is there an adaptation extension? */ + if (!(adapflags & transport_adaptation_flag_extension)) + goto extract_payload; + + /* get/check the length */ + if (pos >= adapend) + return -1; + adapextlength = *pos++; + if ((pos + adapextlength) > adapend) + return -1; + + /* do we want/have anything in the adaptation extension? */ + if (((extract & 0xff00) == 0) || (adapextlength == 0)) + goto extract_payload; + + /* extract the adaptation extension flags (we must have at least 1 byte + * to be here) */ + adapextflags = *pos++; + + /* LTW? */ + if (adapextflags & transport_adaptation_extension_flag_ltw) { + if ((pos+2) > adapend) + return -1; + + if (extract & transport_value_ltw) { + if (*pos & 0x80) { + out->ltw_offset = ((pos[0] & 0x7f) << 8) | + (pos[1]); + extracted |= transport_value_ltw; + } + } + pos += 2; + } + + /* piecewise_rate? */ + if (adapextflags & transport_adaptation_extension_flag_piecewise_rate) { + if ((pos+3) > adapend) + return -1; + + if (extract & transport_value_piecewise_rate) { + out->piecewise_rate = ((pos[0] & 0x3f) << 16) | + (pos[1] << 8) | + pos[2]; + extracted |= transport_value_piecewise_rate; + } + pos += 3; + } + + /* seamless_splice? */ + if (adapextflags & transport_adaptation_extension_flag_seamless_splice) { + if ((pos+5) > adapend) + return -1; + + if (extract & transport_value_piecewise_rate) { + out->splice_type = pos[0] >> 4; + out->dts_next_au = ((pos[0] & 0x0e) << 29) | + (pos[1] << 22) | + ((pos[2] & 0xfe) << 14) | + (pos[3] << 7) | + ((pos[4] & 0xfe) >> 1); + extracted |= transport_value_seamless_splice; + } + pos += 5; + } + + + +extract_payload: + /* does the packet contain a payload? */ + if (pkt->adaptation_field_control & 1) { + int off = sizeof(struct transport_packet); + if (pkt->adaptation_field_control & 2) + off++; + off += adaplength; + + out->payload = (uint8_t*) pkt + off; + out->payload_length = TRANSPORT_PACKET_LENGTH - off; + } else { + out->payload = NULL; + out->payload_length = 0; + } + + out->flags = adapflags; + return extracted; +} + +int transport_packet_continuity_check(struct transport_packet *pkt, + int discontinuity_indicator, unsigned char *cstate) +{ + unsigned char pktcontinuity = pkt->continuity_counter; + unsigned char prevcontinuity = *cstate & 0x0f; + unsigned char nextcontinuity; + + /* NULL packets have undefined continuity */ + if (transport_packet_pid(pkt) == TRANSPORT_NULL_PID) + return 0; + + /* is the state valid? */ + if (!(*cstate & CONTINUITY_VALID)) { + *cstate = pktcontinuity | CONTINUITY_VALID; + return 0; + } + + /* check for discontinuity_indicator */ + if (discontinuity_indicator) { + *cstate = pktcontinuity | CONTINUITY_VALID; + return 0; + } + + /* only packets with a payload should increment the counter */ + if (pkt->adaptation_field_control & 1) + nextcontinuity = (prevcontinuity + 1) & 0xf; + else + nextcontinuity = prevcontinuity; + + /* check for a normal continuity progression */ + if (nextcontinuity == pktcontinuity) { + *cstate = pktcontinuity | CONTINUITY_VALID; + return 0; + } + + /* one dupe is allowed */ + if ((prevcontinuity == pktcontinuity) && (!(*cstate & CONTINUITY_DUPESEEN))) { + *cstate = pktcontinuity | (CONTINUITY_VALID|CONTINUITY_DUPESEEN); + return 0; + } + + /* continuity error */ + return -1; +} diff --git a/lib/libucsi/transport_packet.h b/lib/libucsi/transport_packet.h new file mode 100644 index 0000000..6314eca --- /dev/null +++ b/lib/libucsi/transport_packet.h @@ -0,0 +1,195 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_TRANSPORT_PACKET_H +#define _UCSI_TRANSPORT_PACKET_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <stdint.h> +#include "descriptor.h" + +#define TRANSPORT_PACKET_LENGTH 188 +#define TRANSPORT_PACKET_SYNC 0x47 +#define TRANSPORT_MAX_PIDS 0x2000 +#define TRANSPORT_NULL_PID 0x1fff + + +/** + * Enumeration of adaptation field control values. + */ +enum transport_adaptation_field_control { + transport_adaptation_field_control_reserved = 0x00, + transport_adaptation_field_control_payload_only = 0x01, + transport_adaptation_field_control_adaptation_only = 0x02, + transport_adaptation_field_control_adaptation_payload = 0x03, +}; + +/** + * Enumeration of scrambling control values. + */ +enum transport_scrambling_control { + transport_scrambling_control_unscrambled = 0x00, + transport_scrambling_control_user_1 = 0x01, + transport_scrambling_control_user_2 = 0x02, + transport_scrambling_control_user_3 = 0x03, +}; + +/** + * Enumeration of adaptation flags. + */ +enum transport_adaptation_flags { + transport_adaptation_flag_discontinuity = 0x80, + transport_adaptation_flag_random_access = 0x40, + transport_adaptation_flag_es_priority = 0x20, + transport_adaptation_flag_pcr = 0x10, + transport_adaptation_flag_opcr = 0x08, + transport_adaptation_flag_splicing_point = 0x04, + transport_adaptation_flag_private_data = 0x02, + transport_adaptation_flag_extension = 0x01, +}; + +/** + * Enumeration of adaptation extension flags. + */ +enum transport_adaptation_extension_flags { + transport_adaptation_extension_flag_ltw = 0x80, + transport_adaptation_extension_flag_piecewise_rate = 0x40, + transport_adaptation_extension_flag_seamless_splice = 0x20, +}; + +/** + * Enumeration of flags controlling which values to extract using the + * transport_packet_values_extract() function. + */ +enum transport_value { + /* normal adaptation */ + transport_value_pcr = 0x0001, + transport_value_opcr = 0x0002, + transport_value_splice_countdown = 0x0004, + transport_value_private_data = 0x0008, + + /* extension adaptation */ + transport_value_ltw = 0x0100, + transport_value_piecewise_rate = 0x0200, + transport_value_seamless_splice = 0x0400, +}; + +/** + * Structure describing a transport packet header. + */ +struct transport_packet { + uint8_t sync_byte; + EBIT4(uint8_t transport_error_indicator : 1; , + uint8_t payload_unit_start_indicator : 1; , + uint8_t transport_priority : 1; , + uint8_t pid_hi : 5; ); + uint8_t pid_lo; + EBIT3(uint8_t transport_scrambling_control : 2; , + uint8_t adaptation_field_control : 2; , + uint8_t continuity_counter : 4; ); + /* values */ +} __ucsi_packed; + +/** + * Structure to extract values into using the transport_packet_values_extract() + * function. + */ +struct transport_values { + enum transport_adaptation_flags flags; /* always extracted */ + uint8_t *payload; /* always extracted */ + uint16_t payload_length; /* always extracted */ + + uint64_t pcr; + uint64_t opcr; + uint8_t splice_countdown; + uint8_t private_data_length; + uint8_t *private_data; + uint16_t ltw_offset; + uint32_t piecewise_rate; + uint8_t splice_type; + uint64_t dts_next_au; +}; + +/** + * Extract the PID from a transport packet. + * + * @param pkt The packet. + * @return The PID. + */ +static inline int transport_packet_pid(struct transport_packet *pkt) +{ + return (pkt->pid_hi << 8) | (pkt->pid_lo); +} + +/** + * Process a buffer into a transport packet. + * + * @param buf Raw buffer. Note, this function assumes there are 188 bytes available. + * @return transport_packet pointer, or NULL on error. + */ +static inline struct transport_packet *transport_packet_init(unsigned char *buf) +{ + struct transport_packet *pkt = (struct transport_packet*) buf; + + if (pkt->sync_byte != TRANSPORT_PACKET_SYNC) + return NULL; + + if (transport_packet_pid(pkt) >= TRANSPORT_MAX_PIDS) + return NULL; + + return pkt; +} + +/** + * Check the continuity counter for a packet in a PID stream. + * + * @param pkt transport_packet to check. + * @param discontinuity_indicator Set to 1 if the packet's discontinuity_indicator flag is set. + * @param cstate Pointer to a single 8 bit character, used to store state for validating + * continuity. To initialise the state, simply set it to 0 before the first call. + * @return 0 if the continuity was correct, or nonzero on error. cstate will not be updated on error, + * it is up to the caller to clear it to accept the next packet. + */ +extern int transport_packet_continuity_check(struct transport_packet *pkt, + int discontinuity_indicator, unsigned char *cstate); + +/** + * Extract selected fields from a transport packet. + * + * @param pkt The packet. + * @param out Destination structure for values. + * @param extract Orred bitmask of enum transport_value - tells it what fields + * to extract if they are available. + * @return < 0 => error. Otherwise, an orred bitmask of enum transport_value + * telling you what fields were successfully extracted. + */ +extern int transport_packet_values_extract(struct transport_packet *pkt, + struct transport_values *out, + enum transport_value extract); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libucsi/types.h b/lib/libucsi/types.h new file mode 100644 index 0000000..b01d79a --- /dev/null +++ b/lib/libucsi/types.h @@ -0,0 +1,36 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_TYPES_H +#define _UCSI_TYPES_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +typedef uint8_t iso639lang_t[3]; +typedef uint8_t iso639country_t[3]; + +#ifdef __cplusplus +} +#endif + +#endif |