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66 lines
2.1 KiB
66 lines
2.1 KiB
/* |
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* Copyright (c) 2011 Justin Ruggles |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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/** |
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* mov 'chan' tag reading/writing. |
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* @author Justin Ruggles |
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*/ |
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#ifndef AVFORMAT_MOV_CHAN_H |
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#define AVFORMAT_MOV_CHAN_H |
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#include <stdint.h> |
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#include "libavcodec/avcodec.h" |
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#include "avformat.h" |
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/** |
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* Get the channel layout for the specified channel layout tag. |
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* |
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* @param[in] tag channel layout tag |
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* @param[out] bitmap channel bitmap (only used if needed) |
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* @return channel layout |
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*/ |
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uint64_t ff_mov_get_channel_layout(uint32_t tag, uint32_t bitmap); |
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/** |
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* Get the channel layout tag for the specified codec id and channel layout. |
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* If the layout tag was not found, use a channel bitmap if possible. |
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* |
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* @param[in] codec_id codec id |
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* @param[in] channel_layout channel layout |
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* @param[out] bitmap channel bitmap |
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* @return channel layout tag |
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*/ |
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uint32_t ff_mov_get_channel_layout_tag(enum CodecID codec_id, |
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uint64_t channel_layout, |
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uint32_t *bitmap); |
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/** |
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* Read 'chan' tag from the input stream. |
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* |
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* @param s AVFormatContext |
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* @param st The stream to set codec values for |
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* @param size Remaining size in the 'chan' tag |
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* @return 0 if ok, or negative AVERROR code on failure |
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*/ |
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int ff_mov_read_chan(AVFormatContext *s, AVStream *st, int64_t size); |
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#endif /* AVFORMAT_MOV_CHAN_H */
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