/*
  * 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 */