yading@11: /*
yading@11:  * Copyright (c) 2011 Justin Ruggles
yading@11:  *
yading@11:  * This file is part of Libav.
yading@11:  *
yading@11:  * Libav is free software; you can redistribute it and/or
yading@11:  * modify it under the terms of the GNU Lesser General Public
yading@11:  * License as published by the Free Software Foundation; either
yading@11:  * version 2.1 of the License, or (at your option) any later version.
yading@11:  *
yading@11:  * Libav is distributed in the hope that it will be useful,
yading@11:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@11:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@11:  * Lesser General Public License for more details.
yading@11:  *
yading@11:  * You should have received a copy of the GNU Lesser General Public
yading@11:  * License along with Libav; if not, write to the Free Software
yading@11:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@11:  */
yading@11: 
yading@11: /**
yading@11:  * mov 'chan' tag reading/writing.
yading@11:  * @author Justin Ruggles
yading@11:  */
yading@11: 
yading@11: #ifndef AVFORMAT_MOV_CHAN_H
yading@11: #define AVFORMAT_MOV_CHAN_H
yading@11: 
yading@11: #include <stdint.h>
yading@11: 
yading@11: #include "libavcodec/avcodec.h"
yading@11: #include "avformat.h"
yading@11: 
yading@11: /**
yading@11:  * Get the channel layout for the specified channel layout tag.
yading@11:  *
yading@11:  * @param[in]  tag     channel layout tag
yading@11:  * @param[out] bitmap  channel bitmap (only used if needed)
yading@11:  * @return             channel layout
yading@11:  */
yading@11: uint64_t ff_mov_get_channel_layout(uint32_t tag, uint32_t bitmap);
yading@11: 
yading@11: /**
yading@11:  * Get the channel layout tag for the specified codec id and channel layout.
yading@11:  * If the layout tag was not found, use a channel bitmap if possible.
yading@11:  *
yading@11:  * @param[in]  codec_id        codec id
yading@11:  * @param[in]  channel_layout  channel layout
yading@11:  * @param[out] bitmap          channel bitmap
yading@11:  * @return                     channel layout tag
yading@11:  */
yading@11: uint32_t ff_mov_get_channel_layout_tag(enum AVCodecID codec_id,
yading@11:                                        uint64_t channel_layout,
yading@11:                                        uint32_t *bitmap);
yading@11: 
yading@11: /**
yading@11:  * Read 'chan' tag from the input stream.
yading@11:  *
yading@11:  * @param s     AVFormatContext
yading@11:  * @param pb    AVIOContext
yading@11:  * @param st    The stream to set codec values for
yading@11:  * @param size  Remaining size in the 'chan' tag
yading@11:  * @return      0 if ok, or negative AVERROR code on failure
yading@11:  */
yading@11: int ff_mov_read_chan(AVFormatContext *s, AVIOContext *pb, AVStream *st,
yading@11:                      int64_t size);
yading@11: 
yading@11: #endif /* AVFORMAT_MOV_CHAN_H */