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85 lines
2.6 KiB
85 lines
2.6 KiB
/*****************************************************************************
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* rtp3640.h: RTP Payload Format for Transport of MPEG-4 Elementary Streams
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*****************************************************************************
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* Copyright (C) 2017 VideoLAN
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*
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* Authors: Christophe Massiot
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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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* - IETF RFC 3640 RTP Payload Format for Transport of MPEG-4 ES
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*/
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#ifndef __BITSTREAM_IETF_RTP3640_H__
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# define __BITSTREAM_IETF_RTP3640_H__
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#include <stdint.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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#define RTP3640_AU_HEADERS_LENGTH_SIZE 2
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#define RTP3640_AU_HEADER_AAC_HBR_SIZE 2
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static inline void rtp3640_set_au_headers_length(uint8_t *header, uint16_t size)
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{
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header[0] = size >> 8;
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header[1] = size & 0xff;
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}
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static inline uint16_t rtp3640_get_au_headers_length(const uint8_t *header)
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{
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return (header[0] << 8) | header[1];
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}
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static inline void rtp3640_set_aac_hbr_au_size(uint8_t *header, uint16_t size)
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{
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header[0] = (size >> 5) & 0xff;
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header[1] &= ~0xf8;
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header[1] |= (size << 3) & 0xf8;
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}
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static inline uint16_t rtp3640_get_aac_hbr_au_size(const uint8_t *header)
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{
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return (header[0] << 5) | (header[1] >> 3);
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}
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static inline void rtp3640_set_aac_hbr_au_index(uint8_t *header, uint8_t index)
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{
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header[1] &= ~0x7;
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header[1] |= index & 0x7;
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}
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static inline uint8_t rtp3640_get_aac_hbr_au_index(const uint8_t *header)
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{
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return (header[1] & 0x7);
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* !__BITSTREAM_IETF_RTP3640_H__ */
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