diff options
Diffstat (limited to 'lib/libucsi/atsc')
36 files changed, 5500 insertions, 0 deletions
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 |