diff options
Diffstat (limited to 'libavformat/mov_chan.h')
-rw-r--r-- | libavformat/mov_chan.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/libavformat/mov_chan.h b/libavformat/mov_chan.h new file mode 100644 index 0000000000..9723340102 --- /dev/null +++ b/libavformat/mov_chan.h @@ -0,0 +1,55 @@ +/* + * 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" + +/** + * 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 CodecID codec_id, + uint64_t channel_layout, + uint32_t *bitmap); + +#endif /* AVFORMAT_MOV_CHAN_H */ |