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ffmpeg/libavformat/mov_chan.h

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mov: add support for reading and writing the 'chan' tag This implements reading the tag in the demuxer and adds support for writing it in the muxer. Some example channel layout tables for muxing are included for ac3, aac, and alac, but they are not utilized yet.
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/*
* Copyright (c) 2011 Justin Ruggles
*
Reinstate proper FFmpeg license for all files.
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* This file is part of FFmpeg.
mov: add support for reading and writing the 'chan' tag This implements reading the tag in the demuxer and adds support for writing it in the muxer. Some example channel layout tables for muxing are included for ac3, aac, and alac, but they are not utilized yet.
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*
Reinstate proper FFmpeg license for all files.
2013-08-15 21:12:51 +00:00
* FFmpeg is free software; you can redistribute it and/or
mov: add support for reading and writing the 'chan' tag This implements reading the tag in the demuxer and adds support for writing it in the muxer. Some example channel layout tables for muxing are included for ac3, aac, and alac, but they are not utilized yet.
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* 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.
*
Reinstate proper FFmpeg license for all files.
2013-08-15 21:12:51 +00:00
* FFmpeg is distributed in the hope that it will be useful,
mov: add support for reading and writing the 'chan' tag This implements reading the tag in the demuxer and adds support for writing it in the muxer. Some example channel layout tables for muxing are included for ac3, aac, and alac, but they are not utilized yet.
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* 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
Reinstate proper FFmpeg license for all files.
2013-08-15 21:12:51 +00:00
* License along with FFmpeg; if not, write to the Free Software
mov: add support for reading and writing the 'chan' tag This implements reading the tag in the demuxer and adds support for writing it in the muxer. Some example channel layout tables for muxing are included for ac3, aac, and alac, but they are not utilized yet.
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* mov 'chan' tag reading/writing.
* @author Justin Ruggles
*/
#ifndef AVFORMAT_MOV_CHAN_H
#define AVFORMAT_MOV_CHAN_H
#include <stdint.h>
#include "libavcodec/avcodec.h"
avformat: move 'chan' tag parsing to mov_chan.c to share with the CAF demuxer
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#include "avformat.h"
mov: add support for reading and writing the 'chan' tag This implements reading the tag in the demuxer and adds support for writing it in the muxer. Some example channel layout tables for muxing are included for ac3, aac, and alac, but they are not utilized yet.
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/**
* Get the channel layout for the specified channel layout tag.
*
* @param[in] tag channel layout tag
* @param[out] bitmap channel bitmap (only used if needed)
* @return channel layout
*/
uint64_t ff_mov_get_channel_layout(uint32_t tag, uint32_t bitmap);
/**
* Get the channel layout tag for the specified codec id and channel layout.
* If the layout tag was not found, use a channel bitmap if possible.
*
* @param[in] codec_id codec id
* @param[in] channel_layout channel layout
* @param[out] bitmap channel bitmap
* @return channel layout tag
*/
Replace all CODEC_ID_* with AV_CODEC_ID_*
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uint32_t ff_mov_get_channel_layout_tag(enum AVCodecID codec_id,
mov: add support for reading and writing the 'chan' tag This implements reading the tag in the demuxer and adds support for writing it in the muxer. Some example channel layout tables for muxing are included for ac3, aac, and alac, but they are not utilized yet.
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uint64_t channel_layout,
uint32_t *bitmap);
avformat: move 'chan' tag parsing to mov_chan.c to share with the CAF demuxer
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/**
* Read 'chan' tag from the input stream.
*
* @param s AVFormatContext
mov_chan: Pass a separate AVIOContext for reading This fixes crashes when called from rtpdec_qt, where AVFormatContext->pb is null, a crash present since 3bab7cd128. Signed-off-by: Martin Storsjö <martin@martin.st>
2012-09-06 10:46:37 +00:00
* @param pb AVIOContext
avformat: move 'chan' tag parsing to mov_chan.c to share with the CAF demuxer
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* @param st The stream to set codec values for
* @param size Remaining size in the 'chan' tag
* @return 0 if ok, or negative AVERROR code on failure
*/
mov_chan: Pass a separate AVIOContext for reading This fixes crashes when called from rtpdec_qt, where AVFormatContext->pb is null, a crash present since 3bab7cd128. Signed-off-by: Martin Storsjö <martin@martin.st>
2012-09-06 10:46:37 +00:00
int ff_mov_read_chan(AVFormatContext *s, AVIOContext *pb, AVStream *st,
int64_t size);
avformat: move 'chan' tag parsing to mov_chan.c to share with the CAF demuxer
2012-04-07 16:40:50 +00:00
mov: add support for reading and writing the 'chan' tag This implements reading the tag in the demuxer and adds support for writing it in the muxer. Some example channel layout tables for muxing are included for ac3, aac, and alac, but they are not utilized yet.
2011-12-03 18:32:45 +00:00
#endif /* AVFORMAT_MOV_CHAN_H */