From ab959d7b4194715870128e616b8e29d4a101e488 Mon Sep 17 00:00:00 2001 From: etobi Date: Tue, 3 Sep 2013 09:48:41 +0200 Subject: Imported Upstream version 1.1.1+rev1207 --- lib/libucsi/dvb/int_section.h | 245 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 245 insertions(+) create mode 100644 lib/libucsi/dvb/int_section.h (limited to 'lib/libucsi/dvb/int_section.h') diff --git a/lib/libucsi/dvb/int_section.h b/lib/libucsi/dvb/int_section.h new file mode 100644 index 0000000..932c0e8 --- /dev/null +++ b/lib/libucsi/dvb/int_section.h @@ -0,0 +1,245 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * Copyright (C) 2005 Patrick Boettcher (pb@linuxtv.org) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ +#ifndef _UCSI_DVB_INT_SECTION_H +#define _UCSI_DVB_INT_SECTION_H + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include + +/** + * dvb_int_section structure - IP/MAC notification section. + */ +struct dvb_int_section { + struct section_ext head; + + EBIT2(uint32_t platform_id :24; , + uint32_t processing_order : 8; ); + EBIT2(uint16_t reserved2 : 4; , + uint16_t platform_descriptors_length :12; ); + /* struct descriptor platform_descriptors[] */ + /* struct dvb_int_target target_loop[] */ +} __ucsi_packed; + +/** + * An entry in the target_loop field of a dvb_int_section. + */ +struct dvb_int_target { + EBIT2(uint16_t reserved3 : 4; , + uint16_t target_descriptors_length :12; ); + /* struct descriptor target_descriptors[] */ + /* struct dvb_int_operational_loop operational_loop */ +} __ucsi_packed; + +/** + * The operational_loop field in a dvb_int_target. + */ +struct dvb_int_operational_loop { + EBIT2(uint16_t reserved4 : 4; , + uint16_t operational_descriptors_length :12; ); + /* struct descriptor operational_descriptors[] */ +} __ucsi_packed; + +/** + * Process a dvb_int_section. + * + * @param section Generic section_ext pointer. + * @return dvb_int_section pointer, or NULL on error. + */ +extern struct dvb_int_section * dvb_int_section_codec(struct section_ext *section); + +/** + * Accessor for the action_type field of an INT. + * + * @param intp INT pointer. + * @return The action_type. + */ +static inline uint8_t dvb_int_section_action_type(struct dvb_int_section *intp) +{ + return intp->head.table_id_ext >> 8; +} + +/** + * Accessor for the platform_id_hash field of an INT. + * + * @param intp INT pointer. + * @return The platform_id_hash. + */ +static inline uint8_t dvb_int_section_platform_id_hash(struct dvb_int_section *intp) +{ + return intp->head.table_id_ext & 0xff; +} + +/** + * Iterator for platform_descriptors field in a dvb_int_section. + * + * @param intp dvb_int_section pointer. + * @param pos Variable holding a pointer to the current descriptor. + */ +#define dvb_int_section_platform_descriptors_for_each(intp, pos) \ + for ((pos) = dvb_int_section_platform_descriptors_first(intp); \ + (pos); \ + (pos) = dvb_int_section_platform_descriptors_next(intp, pos)) + +/** + * Iterator for the target_loop field in a dvb_int_section. + * + * @param intp dvb_int_section pointer. + * @param pos Variable holding a pointer to the current dvb_int_target. + */ +#define dvb_int_section_target_loop_for_each(intp,pos) \ + for ((pos) = dvb_int_section_target_loop_first(intp); \ + (pos); \ + (pos) = dvb_int_section_target_loop_next(intp, pos)) + +/** + * Iterator for the target_descriptors field in a dvb_int_target. + * + * @param target dvb_int_target pointer. + * @param pos Variable holding a pointer to the current descriptor. + */ +#define dvb_int_target_target_descriptors_for_each(target, pos) \ + for ((pos) = dvb_int_target_target_descriptors_first(target); \ + (pos); \ + (pos) = dvb_int_target_target_descriptors_next(target, pos)) + +/** + * Accessor for the operational_loop field of a dvb_int_target. + * + * @param target dvb_int_target pointer. + * @return Pointer to a dvb_int_operational_loop. + */ +static inline struct dvb_int_operational_loop * + dvb_int_target_operational_loop(struct dvb_int_target *target) +{ + return (struct dvb_int_operational_loop *) + ((uint8_t *) target + sizeof(struct dvb_int_target) + target->target_descriptors_length); +} + +/** + * Iterator for the operational_descriptors field in a dvb_int_operational_loop. + * + * @param oploop dvb_int_operational_loop pointer. + * @param pos Variable holding a pointer to the current descriptor. + */ +#define dvb_int_operational_loop_operational_descriptors_for_each(oploop, pos) \ + for ((pos) = dvb_int_operational_loop_operational_descriptors_first(oploop); \ + (pos); \ + (pos) = dvb_int_operational_loop_operational_descriptors_next(oploop, pos)) + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct descriptor * + dvb_int_section_platform_descriptors_first(struct dvb_int_section *in) +{ + if (in->platform_descriptors_length == 0) + return NULL; + + return (struct descriptor *) + ((uint8_t *) in + sizeof(struct dvb_int_section)); +} + +static inline struct descriptor * + dvb_int_section_platform_descriptors_next(struct dvb_int_section *in, + struct descriptor* pos) +{ + return next_descriptor((uint8_t*) in + sizeof(struct dvb_int_section), + in->platform_descriptors_length, + pos); +} + +static inline struct dvb_int_target * + dvb_int_section_target_loop_first(struct dvb_int_section *in) +{ + if (sizeof(struct dvb_int_section) + in->platform_descriptors_length >= (uint32_t) section_ext_length((struct section_ext *) in)) + return NULL; + + return (struct dvb_int_target *) + ((uint8_t *) in + sizeof(struct dvb_int_section) + in->platform_descriptors_length); +} + +static inline struct dvb_int_target * + dvb_int_section_target_loop_next(struct dvb_int_section *in, + struct dvb_int_target *pos) +{ + struct dvb_int_operational_loop *ol = dvb_int_target_operational_loop(pos); + struct dvb_int_target *next = + (struct dvb_int_target *) ( (uint8_t *) pos + + sizeof(struct dvb_int_target) + pos->target_descriptors_length + + sizeof(struct dvb_int_operational_loop) + ol->operational_descriptors_length); + struct dvb_int_target *end = + (struct dvb_int_target *) ((uint8_t *) in + section_ext_length((struct section_ext *) in) ); + + if (next >= end) + return 0; + return next; +} + +static inline struct descriptor * + dvb_int_target_target_descriptors_first(struct dvb_int_target *tl) +{ + if (tl->target_descriptors_length == 0) + return NULL; + + return (struct descriptor *) + ((uint8_t *) tl + sizeof(struct dvb_int_target)); +} + +static inline struct descriptor * + dvb_int_target_target_descriptors_next(struct dvb_int_target *tl, + struct descriptor* pos) +{ + return next_descriptor((uint8_t*) tl + sizeof(struct dvb_int_target), + tl->target_descriptors_length, + pos); +} + +static inline struct descriptor * + dvb_int_operational_loop_operational_descriptors_first(struct dvb_int_operational_loop *ol) +{ + if (ol->operational_descriptors_length == 0) + return NULL; + + return (struct descriptor *) + ((uint8_t *) ol + sizeof(struct dvb_int_operational_loop)); +} + +static inline struct descriptor * + dvb_int_operational_loop_operational_descriptors_next(struct dvb_int_operational_loop *ol, + struct descriptor* pos) +{ + return next_descriptor((uint8_t*) ol + sizeof(struct dvb_int_operational_loop), + ol->operational_descriptors_length, + pos); +} + +#ifdef __cplusplus +} +#endif + +#endif -- cgit v1.2.3