69 lines
2.2 KiB
C
69 lines
2.2 KiB
C
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/*
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* Copyright (c) 2011 Justin Ruggles
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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 AVCodecID 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 pb AVIOContext
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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, AVIOContext *pb, AVStream *st,
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int64_t size);
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#endif /* AVFORMAT_MOV_CHAN_H */
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