mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
79 lines
2.7 KiB
79 lines
2.7 KiB
/* |
|
* 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 |
|
|
|
/** |
|
* @file |
|
* Audio format conversion routines |
|
*/ |
|
|
|
|
|
#include "libavutil/cpu.h" |
|
#include "avcodec.h" |
|
#include "libavutil/channel_layout.h" |
|
|
|
struct AVAudioConvert; |
|
typedef struct AVAudioConvert AVAudioConvert; |
|
|
|
/** |
|
* Create an audio sample format converter context |
|
* @param out_fmt Output sample format |
|
* @param out_channels Number of output channels |
|
* @param in_fmt Input sample format |
|
* @param in_channels Number of input channels |
|
* @param[in] matrix Channel mixing matrix (of dimension in_channel*out_channels). Set to NULL to ignore. |
|
* @param flags See AV_CPU_FLAG_xx |
|
* @return NULL on error |
|
* @deprecated See libswresample |
|
*/ |
|
|
|
attribute_deprecated |
|
AVAudioConvert *av_audio_convert_alloc(enum AVSampleFormat out_fmt, int out_channels, |
|
enum AVSampleFormat in_fmt, int in_channels, |
|
const float *matrix, int flags); |
|
|
|
/** |
|
* Free audio sample format converter context |
|
* @deprecated See libswresample |
|
*/ |
|
|
|
attribute_deprecated |
|
void av_audio_convert_free(AVAudioConvert *ctx); |
|
|
|
/** |
|
* Convert between audio sample formats |
|
* @param[in] out array of output buffers for each channel. set to NULL to ignore processing of the given channel. |
|
* @param[in] out_stride distance between consecutive output samples (measured in bytes) |
|
* @param[in] in array of input buffers for each channel |
|
* @param[in] in_stride distance between consecutive input samples (measured in bytes) |
|
* @param len length of audio frame size (measured in samples) |
|
* @deprecated See libswresample |
|
*/ |
|
|
|
attribute_deprecated |
|
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 */
|
|
|