/* * 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 "version.h" /** * @file * Audio format conversion routines * This interface is deprecated and will be dropped in a future * version. You should use the libswresample library instead. */ #if FF_API_AUDIO_CONVERT #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_deprecatedAVAudioConvert *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_deprecatedvoid 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_deprecatedint 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 /* FF_API_AUDIO_CONVERT */ #endif /* AVCODEC_AUDIOCONVERT_H */