yading@11: /*
yading@11:  * audio interleaving prototypes and declarations
yading@11:  *
yading@11:  * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
yading@11:  *
yading@11:  * This file is part of FFmpeg.
yading@11:  *
yading@11:  * FFmpeg 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:  * FFmpeg 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 FFmpeg; 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: #ifndef AVFORMAT_AUDIOINTERLEAVE_H
yading@11: #define AVFORMAT_AUDIOINTERLEAVE_H
yading@11: 
yading@11: #include "libavutil/fifo.h"
yading@11: #include "avformat.h"
yading@11: 
yading@11: typedef struct AudioInterleaveContext {
yading@11:     AVFifoBuffer *fifo;
yading@11:     unsigned fifo_size;           ///< size of currently allocated FIFO
yading@11:     uint64_t dts;                 ///< current dts
yading@11:     int sample_size;              ///< size of one sample all channels included
yading@11:     const int *samples_per_frame; ///< must be 0-terminated
yading@11:     const int *samples;           ///< current samples per frame, pointer to samples_per_frame
yading@11:     AVRational time_base;         ///< time base of output audio packets
yading@11: } AudioInterleaveContext;
yading@11: 
yading@11: int ff_audio_interleave_init(AVFormatContext *s, const int *samples_per_frame, AVRational time_base);
yading@11: void ff_audio_interleave_close(AVFormatContext *s);
yading@11: 
yading@11: /**
yading@11:  * Rechunk audio PCM packets per AudioInterleaveContext->samples_per_frame
yading@11:  * and interleave them correctly.
yading@11:  * The first element of AVStream->priv_data must be AudioInterleaveContext
yading@11:  * when using this function.
yading@11:  *
yading@11:  * @param get_packet function will output a packet when streams are correctly interleaved.
yading@11:  * @param compare_ts function will compare AVPackets and decide interleaving order.
yading@11:  */
yading@11: int ff_audio_rechunk_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush,
yading@11:                         int (*get_packet)(AVFormatContext *, AVPacket *, AVPacket *, int),
yading@11:                         int (*compare_ts)(AVFormatContext *, AVPacket *, AVPacket *));
yading@11: 
yading@11: #endif /* AVFORMAT_AUDIOINTERLEAVE_H */