repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * Copyright (c) 2011 Justin Ruggles | |
| 3 | * | |
| 4 | * This file is part of FFmpeg. | |
| 5 | * | |
| 6 | * FFmpeg is free software; you can redistribute it and/or | |
| 7 | * modify it under the terms of the GNU Lesser General Public | |
| 8 | * License as published by the Free Software Foundation; either | |
| 9 | * version 2.1 of the License, or (at your option) any later version. | |
| 10 | * | |
| 11 | * FFmpeg is distributed in the hope that it will be useful, | |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 | * Lesser General Public License for more details. | |
| 15 | * | |
| 16 | * You should have received a copy of the GNU Lesser General Public | |
| 17 | * License along with FFmpeg; if not, write to the Free Software | |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 19 | */ | |
| 20 | ||
| 21 | /** | |
| 22 | * mov 'chan' tag reading/writing. | |
| 23 | * @author Justin Ruggles | |
| 24 | */ | |
| 25 | ||
| 26 | #ifndef AVFORMAT_MOV_CHAN_H | |
| 27 | #define AVFORMAT_MOV_CHAN_H | |
| 28 | ||
| 29 | #include <stdint.h> | |
| 30 | ||
| 31 | #include "libavcodec/avcodec.h" | |
| 32 | #include "avformat.h" | |
| 33 | ||
| 34 | /** | |
| 35 | * Get the channel layout for the specified channel layout tag. | |
| 36 | * | |
| 37 | * @param[in] tag channel layout tag | |
| 38 | * @param[out] bitmap channel bitmap (only used if needed) | |
| 39 | * @return channel layout | |
| 40 | */ | |
| 41 | uint64_t ff_mov_get_channel_layout(uint32_t tag, uint32_t bitmap); | |
| 42 | ||
| 43 | /** | |
| 44 | * Get the channel layout tag for the specified codec id and channel layout. | |
| 45 | * If the layout tag was not found, use a channel bitmap if possible. | |
| 46 | * | |
| 47 | * @param[in] codec_id codec id | |
| 48 | * @param[in] channel_layout channel layout | |
| 49 | * @param[out] bitmap channel bitmap | |
| 50 | * @return channel layout tag | |
| 51 | */ | |
| 52 | uint32_t ff_mov_get_channel_layout_tag(enum AVCodecID codec_id, | |
| 53 | uint64_t channel_layout, | |
| 54 | uint32_t *bitmap); | |
| 55 | ||
| 56 | /** | |
| 57 | * Read 'chan' tag from the input stream. | |
| 58 | * | |
| 59 | * @param s AVFormatContext | |
| 60 | * @param pb AVIOContext | |
| 61 | * @param st The stream to set codec values for | |
| 62 | * @param size Remaining size in the 'chan' tag | |
| 63 | * @return 0 if ok, or negative AVERROR code on failure | |
| 64 | */ | |
| 65 | int ff_mov_read_chan(AVFormatContext *s, AVIOContext *pb, AVStream *st, | |
| 66 | int64_t size); | |
| 67 | ||
| 68 | #endif /* AVFORMAT_MOV_CHAN_H */ |