/*

  * audio interleaving prototypes and declarations

  *
  * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
  *
  * 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
  */
 
 #ifndef AVFORMAT_AUDIOINTERLEAVE_H
 #define AVFORMAT_AUDIOINTERLEAVE_H
 
 #include "libavutil/fifo.h"
 #include "avformat.h"
 
 typedef struct {

     AVFifoBuffer *fifo;

     unsigned fifo_size;           ///< size of currently allocated FIFO

     uint64_t dts;                 ///< current dts
     int sample_size;              ///< size of one sample all channels included

     const int *samples_per_frame; ///< must be 0-terminated

     const int *samples;           ///< current samples per frame, pointer to samples_per_frame
     AVRational time_base;         ///< time base of output audio packets
 } AudioInterleaveContext;
 
 int ff_audio_interleave_init(AVFormatContext *s, const int *samples_per_frame, AVRational time_base);
 void ff_audio_interleave_close(AVFormatContext *s);
 

 /**

  * Rechunk audio PCM packets per AudioInterleaveContext->samples_per_frame

  * and interleave them correctly.

  * The first element of AVStream->priv_data must be AudioInterleaveContext

  * when using this function.
  *
  * @param get_packet function will output a packet when streams are correctly interleaved.
  * @param compare_ts function will compare AVPackets and decide interleaving order.
  */

 int ff_audio_rechunk_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush,

                         int (*get_packet)(AVFormatContext *, AVPacket *, AVPacket *, int),
                         int (*compare_ts)(AVFormatContext *, AVPacket *, AVPacket *));
 

 #endif /* AVFORMAT_AUDIOINTERLEAVE_H */