mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
68 lines
2.2 KiB
68 lines
2.2 KiB
/* |
|
* Copyright (c) 2011 Justin Ruggles |
|
* |
|
* This file is part of Libav. |
|
* |
|
* Libav 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. |
|
* |
|
* Libav 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 Libav; 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 */
|
|
|