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