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737eb5976f
It is pretty hopeless that other considerable projects will adopt libavutil alone in other projects. Projects that need small footprint are better off with more specialized libraries such as gnulib or rather just copy the necessary parts that they need. With this in mind, nobody is helped by having libavutil and libavcore split. In order to ease maintenance inside and around FFmpeg and to reduce confusion where to put common code, avcore's functionality is merged (back) to avutil. Signed-off-by: Reinhard Tartler <siretart@tauware.de>
120 lines
3.8 KiB
C
120 lines
3.8 KiB
C
/*
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* audio conversion
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* Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
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* Copyright (c) 2008 Peter Ross
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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 AVCODEC_AUDIOCONVERT_H
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#define AVCODEC_AUDIOCONVERT_H
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/**
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* @file
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* Audio format conversion routines
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*/
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#include "libavutil/cpu.h"
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#include "avcodec.h"
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#include "libavutil/audioconvert.h"
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#if FF_API_OLD_SAMPLE_FMT
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/**
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* @deprecated Use av_get_sample_fmt_string() instead.
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*/
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attribute_deprecated
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void avcodec_sample_fmt_string(char *buf, int buf_size, int sample_fmt);
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/**
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* @deprecated Use av_get_sample_fmt_name() instead.
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*/
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attribute_deprecated
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const char *avcodec_get_sample_fmt_name(int sample_fmt);
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/**
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* @deprecated Use av_get_sample_fmt() instead.
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*/
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attribute_deprecated
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enum AVSampleFormat avcodec_get_sample_fmt(const char* name);
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#endif
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#if FF_API_OLD_AUDIOCONVERT
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/**
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* @deprecated Use av_get_channel_layout() instead.
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*/
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attribute_deprecated
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int64_t avcodec_get_channel_layout(const char *name);
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/**
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* @deprecated Use av_get_channel_layout_string() instead.
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*/
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attribute_deprecated
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void avcodec_get_channel_layout_string(char *buf, int buf_size, int nb_channels, int64_t channel_layout);
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/**
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* @deprecated Use av_get_channel_layout_nb_channels() instead.
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*/
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attribute_deprecated
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int avcodec_channel_layout_num_channels(int64_t channel_layout);
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#endif
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/**
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* Guess the channel layout
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* @param nb_channels
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* @param codec_id Codec identifier, or CODEC_ID_NONE if unknown
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* @param fmt_name Format name, or NULL if unknown
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* @return Channel layout mask
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*/
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int64_t avcodec_guess_channel_layout(int nb_channels, enum CodecID codec_id, const char *fmt_name);
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struct AVAudioConvert;
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typedef struct AVAudioConvert AVAudioConvert;
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/**
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* Create an audio sample format converter context
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* @param out_fmt Output sample format
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* @param out_channels Number of output channels
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* @param in_fmt Input sample format
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* @param in_channels Number of input channels
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* @param[in] matrix Channel mixing matrix (of dimension in_channel*out_channels). Set to NULL to ignore.
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* @param flags See AV_CPU_FLAG_xx
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* @return NULL on error
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*/
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AVAudioConvert *av_audio_convert_alloc(enum AVSampleFormat out_fmt, int out_channels,
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enum AVSampleFormat in_fmt, int in_channels,
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const float *matrix, int flags);
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/**
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* Free audio sample format converter context
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*/
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void av_audio_convert_free(AVAudioConvert *ctx);
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/**
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* Convert between audio sample formats
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* @param[in] out array of output buffers for each channel. set to NULL to ignore processing of the given channel.
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* @param[in] out_stride distance between consecutive output samples (measured in bytes)
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* @param[in] in array of input buffers for each channel
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* @param[in] in_stride distance between consecutive input samples (measured in bytes)
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* @param len length of audio frame size (measured in samples)
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*/
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int av_audio_convert(AVAudioConvert *ctx,
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void * const out[6], const int out_stride[6],
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const void * const in[6], const int in_stride[6], int len);
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#endif /* AVCODEC_AUDIOCONVERT_H */
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