libavcodec/audioconvert.h

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/*
 * audio conversion
 * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
 * Copyright (c) 2008 Peter Ross
 *
 * 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 AVCODEC_AUDIOCONVERT_H
#define AVCODEC_AUDIOCONVERT_H

#include "avcodec.h"


void avcodec_sample_fmt_string(char *buf, int buf_size, int sample_fmt);

const char *avcodec_get_sample_fmt_name(int sample_fmt);

enum SampleFormat avcodec_get_sample_fmt(const char* name);

const char *avcodec_get_channel_name(int channel_id);

void avcodec_get_channel_layout_string(char *buf, int buf_size, int nb_channels, int64_t channel_layout);

int64_t avcodec_guess_channel_layout(int nb_channels, enum CodecID codec_id, const char *fmt_name);

int avcodec_channel_layout_num_channels(int64_t channel_layout);

struct AVAudioConvert;
typedef struct AVAudioConvert AVAudioConvert;

AVAudioConvert *av_audio_convert_alloc(enum SampleFormat out_fmt, int out_channels,
                                       enum SampleFormat in_fmt, int in_channels,
                                       const float *matrix, int flags);

void av_audio_convert_free(AVAudioConvert *ctx);

int av_audio_convert(AVAudioConvert *ctx,
                           void * const out[6], const int out_stride[6],
                     const void * const  in[6], const int  in_stride[6], int len);

#endif /* AVCODEC_AUDIOCONVERT_H */

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