mirror of
https://github.com/librempeg/librempeg
synced 2024-11-23 11:39:47 +00:00
69 lines
2.2 KiB
C
69 lines
2.2 KiB
C
/*
|
|
* Copyright (c) 2011 Justin Ruggles
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg 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.
|
|
*
|
|
* FFmpeg 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 FFmpeg; if not, write to the Free Software
|
|
* 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"
|
|
#include "avformat.h"
|
|
|
|
/**
|
|
* 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
|
|
*/
|
|
uint32_t ff_mov_get_channel_layout_tag(enum AVCodecID codec_id,
|
|
uint64_t channel_layout,
|
|
uint32_t *bitmap);
|
|
|
|
/**
|
|
* Read 'chan' tag from the input stream.
|
|
*
|
|
* @param s AVFormatContext
|
|
* @param pb AVIOContext
|
|
* @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
|
|
*/
|
|
int ff_mov_read_chan(AVFormatContext *s, AVIOContext *pb, AVStream *st,
|
|
int64_t size);
|
|
|
|
#endif /* AVFORMAT_MOV_CHAN_H */
|