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Diffstat (limited to 'libswresample/audioconvert.h')
-rw-r--r-- | libswresample/audioconvert.h | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/libswresample/audioconvert.h b/libswresample/audioconvert.h new file mode 100644 index 0000000..e5fd4df --- /dev/null +++ b/libswresample/audioconvert.h @@ -0,0 +1,65 @@ +/* + * 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 SWR_AUDIOCONVERT_H +#define SWR_AUDIOCONVERT_H + +/** + * @file + * Audio format conversion routines + */ + + +#include "swresample_internal.h" +#include "libavutil/cpu.h" +#include "libavutil/audioconvert.h" + +struct AVAudioConvert; +typedef struct AVAudioConvert AVAudioConvert; + +/** + * Create an audio sample format converter context + * @param out_fmt Output sample format + * @param in_fmt Input sample format + * @param channels Number of channels + * @param flags See AV_CPU_FLAG_xx + * @return NULL on error + */ +AVAudioConvert *swr_audio_convert_alloc(enum AVSampleFormat out_fmt, + enum AVSampleFormat in_fmt, + int channels, int flags); + +/** + * Free audio sample format converter context. + * and set the pointer to NULL + */ +void swr_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] in array of input buffers for each channel + * @param len length of audio frame size (measured in samples) + */ +int swr_audio_convert(AVAudioConvert *ctx, AudioData *out, AudioData *in, int len); + +#endif /* AVCODEC_AUDIOCONVERT_H */ |