mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-24 16:22:37 +00:00
e37f161e66
* qatar/master: (71 commits) movenc: Allow writing to a non-seekable output if using empty moov movenc: Support adding isml (smooth streaming live) metadata libavcodec: Don't crash in avcodec_encode_audio if time_base isn't set sunrast: Document the different Sun Raster file format types. sunrast: Add a check for experimental type. libspeexenc: use AVSampleFormat instead of deprecated/removed SampleFormat lavf: remove disabled FF_API_SET_PTS_INFO cruft lavf: remove disabled FF_API_OLD_INTERRUPT_CB cruft lavf: remove disabled FF_API_REORDER_PRIVATE cruft lavf: remove disabled FF_API_SEEK_PUBLIC cruft lavf: remove disabled FF_API_STREAM_COPY cruft lavf: remove disabled FF_API_PRELOAD cruft lavf: remove disabled FF_API_NEW_STREAM cruft lavf: remove disabled FF_API_RTSP_URL_OPTIONS cruft lavf: remove disabled FF_API_MUXRATE cruft lavf: remove disabled FF_API_FILESIZE cruft lavf: remove disabled FF_API_TIMESTAMP cruft lavf: remove disabled FF_API_LOOP_OUTPUT cruft lavf: remove disabled FF_API_LOOP_INPUT cruft lavf: remove disabled FF_API_AVSTREAM_QUALITY cruft ... Conflicts: doc/APIchanges libavcodec/8bps.c libavcodec/avcodec.h libavcodec/libx264.c libavcodec/mjpegbdec.c libavcodec/options.c libavcodec/sunrast.c libavcodec/utils.c libavcodec/version.h libavcodec/x86/h264_deblock.asm libavdevice/libdc1394.c libavdevice/v4l2.c libavformat/avformat.h libavformat/avio.c libavformat/avio.h libavformat/aviobuf.c libavformat/dv.c libavformat/mov.c libavformat/utils.c libavformat/version.h libavformat/wtv.c libavutil/Makefile libavutil/file.c libswscale/x86/input.asm libswscale/x86/swscale_mmx.c libswscale/x86/swscale_template.c tests/ref/lavf/ffm Merged-by: Michael Niedermayer <michaelni@gmx.at>
80 lines
2.8 KiB
C
80 lines
2.8 KiB
C
/*
|
|
* 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/audioconvert.h"
|
|
|
|
/**
|
|
* Guess the channel layout
|
|
* @param nb_channels
|
|
* @param codec_id Codec identifier, or CODEC_ID_NONE if unknown
|
|
* @param fmt_name Format name, or NULL if unknown
|
|
* @return Channel layout mask
|
|
*/
|
|
uint64_t avcodec_guess_channel_layout(int nb_channels, enum CodecID codec_id, const char *fmt_name);
|
|
|
|
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
|
|
*/
|
|
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
|
|
*/
|
|
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)
|
|
*/
|
|
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 */
|