| /* |
| * 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 AudioInterleaveContext { |
| 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 */ |