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139 lines
4.5 KiB
139 lines
4.5 KiB
/*****************************************************************************
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* desc_7c.h: ETSI EN 300 468 Descriptor 0x7c: AAC descriptor
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*****************************************************************************
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* Copyright (C) 2011 Unix Solutions Ltd.
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*
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* Authors: Georgi Chorbadzhiyski <georgi@unixsol.org>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject
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* to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*****************************************************************************/
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/*
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* Normative references:
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* - ETSI EN 300 468 V1.12.1 (2011-06) (SI in DVB systems)
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*/
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#ifndef __BITSTREAM_DVB_DESC_7C_H__
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#define __BITSTREAM_DVB_DESC_7C_H__
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#include <bitstream/common.h>
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#include <bitstream/mpeg/psi/descriptors.h>
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/*****************************************************************************
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* Descriptor 0x7c: AAC descriptor
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*****************************************************************************/
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#define DESC7C_HEADER_SIZE (DESC_HEADER_SIZE + 1)
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#define DESC7C_HEADER_SIZE2 (DESC_HEADER_SIZE + 3)
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static inline void desc7c_init(uint8_t *p_desc)
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{
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desc_set_tag(p_desc, 0x7c);
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desc_set_length(p_desc, (DESC7C_HEADER_SIZE - DESC_HEADER_SIZE));
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}
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static inline uint8_t desc7c_get_profile_and_level(const uint8_t *p_desc)
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{
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return p_desc[2];
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}
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static inline void desc7c_set_profile_and_level(uint8_t *p_desc, uint8_t i_profile_and_level)
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{
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p_desc[2] = i_profile_and_level;
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}
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static inline bool desc7c_get_aac_type_flag(const uint8_t *p_desc)
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{
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if (desc_get_length(p_desc) > 1)
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return (p_desc[3] & 0x80) == 0x80;
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else
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return false;
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}
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static inline void desc7c_set_aac_type_flag(uint8_t *p_desc, bool b_aac_type_flag)
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{
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uint8_t i_desc_len = desc_get_length(p_desc);
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if (i_desc_len == 1 && b_aac_type_flag) {
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i_desc_len += 2;
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desc_set_length(p_desc, i_desc_len);
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}
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if (i_desc_len > 1 && !b_aac_type_flag) {
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i_desc_len -= 2;
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desc_set_length(p_desc, i_desc_len);
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}
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if (i_desc_len > 1)
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p_desc[3] = b_aac_type_flag ? 0x80 : 0;
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}
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static inline uint8_t desc7c_get_aac_type(const uint8_t *p_desc)
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{
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if (!desc7c_get_aac_type_flag(p_desc))
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return 0;
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return p_desc[4];
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}
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static inline void desc7c_set_aac_type(uint8_t *p_desc, uint8_t i_aac_type)
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{
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if (!desc7c_get_aac_type_flag(p_desc))
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return;
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p_desc[4] = i_aac_type;
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}
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static inline bool desc7c_validate(const uint8_t *p_desc)
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{
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if (!desc7c_get_aac_type_flag(p_desc))
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return desc_get_length(p_desc) >= (DESC7C_HEADER_SIZE - DESC_HEADER_SIZE);
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else
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return desc_get_length(p_desc) >= (DESC7C_HEADER_SIZE2 - DESC_HEADER_SIZE);
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}
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static inline void desc7c_print(const uint8_t *p_desc, f_print pf_print,
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void *opaque, print_type_t i_print_type)
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{
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switch (i_print_type) {
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case PRINT_XML:
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pf_print(opaque,
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"<AAC_DESC profile_and_level=\"0x%02x\""
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" aac_type_flag=\"%u\" aac_type=\"0x%02x\"/>",
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desc7c_get_profile_and_level(p_desc),
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desc7c_get_aac_type_flag(p_desc),
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desc7c_get_aac_type(p_desc)
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);
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break;
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default:
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pf_print(opaque,
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" - desc 7c aac profile_and_level=\"0x%02x\""
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" aac_type_flag=\"%u\" aac_type=\"0x%02x\"",
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desc7c_get_profile_and_level(p_desc),
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desc7c_get_aac_type_flag(p_desc),
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desc7c_get_aac_type(p_desc)
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);
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}
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}
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#ifdef __cplusplus
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}
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#endif
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#endif
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