| /* |
| * 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 */ |