diff options
Diffstat (limited to 'mediaplugin/src/plugins/media/ffmpeg/ffmpeg_audio_convert.h')
-rw-r--r-- | mediaplugin/src/plugins/media/ffmpeg/ffmpeg_audio_convert.h | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/mediaplugin/src/plugins/media/ffmpeg/ffmpeg_audio_convert.h b/mediaplugin/src/plugins/media/ffmpeg/ffmpeg_audio_convert.h deleted file mode 100644 index ee4c5a81..00000000 --- a/mediaplugin/src/plugins/media/ffmpeg/ffmpeg_audio_convert.h +++ /dev/null @@ -1,133 +0,0 @@ -/* UltraStar Deluxe - Karaoke Game - * - * UltraStar Deluxe is the legal property of its developers, whose names - * are too numerous to list here. Please refer to the COPYRIGHT - * file distributed with this source distribution. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * - * This program 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 General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; see the file COPYING. If not, write to - * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, - * Boston, MA 02110-1301, USA. - * - * $URL$ - * $Id$ - */ -#ifndef _FFMPEG_AUDIO_CONVERT_H_ -#define _FFMPEG_AUDIO_CONVERT_H_ - -#include "ffmpeg_core.h" -#include "core/plugin_audio_convert.h" -#include <math.h> - -extern const audioConverterInfo_t audioConverterInfo; - -// Note: FFmpeg seems to be using "kaiser windowed sinc" for resampling, so -// the quality should be good. -class FFmpegAudioConvertStream : public AudioConvertStream { -private: - ReSampleContext *_resampleContext; - double _ratio; - -protected: - FFmpegAudioConvertStream(const AudioFormatInfo &srcFormatInfo, const AudioFormatInfo &dstFormatInfo) : - AudioConvertStream(srcFormatInfo, dstFormatInfo), - _resampleContext(NULL), - _ratio(0) {} - - bool init() { - // Note: FFmpeg does not support resampling for more than 2 input channels - - if (_srcFormatInfo.getFormat() != asfS16) { - logger.error("Unsupported format", "TAudioConverter_FFmpeg.Init"); - return false; - } - - if (_srcFormatInfo.getFormat() != _dstFormatInfo.getFormat()) { - logger.error("Incompatible formats", "TAudioConverter_FFmpeg.Init"); - return false; - } - -#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(52,15,0) - // use same values as the deprecated audio_resample_init() - const int TAPS = 16; - _resampleContext = av_audio_resample_init( - _dstFormatInfo.getChannels(), - _srcFormatInfo.getChannels(), - lround(_dstFormatInfo.getSampleRate()), - lround(_srcFormatInfo.getSampleRate()), - SAMPLE_FMT_S16, SAMPLE_FMT_S16, - TAPS, 10, 0, 0.8); -#else - _resampleContext = audio_resample_init( - _dstFormatInfo.getChannels(), - _srcFormatInfo.getChannels(), - lround(_dstFormatInfo.getSampleRate()), - lround(_srcFormatInfo.getSampleRate())); -#endif - - if (!_resampleContext) { - logger.error("audio_resample_init() failed", "TAudioConverter_FFmpeg.Init"); - return false; - } - - // calculate ratio - _ratio = ((double)_dstFormatInfo.getChannels() / _srcFormatInfo.getChannels()) * - (_dstFormatInfo.getSampleRate() / _srcFormatInfo.getSampleRate()); - - return true; - } - -public: - virtual ~FFmpegAudioConvertStream() { - if (_resampleContext) - audio_resample_close(_resampleContext); - } - - static FFmpegAudioConvertStream* open(const AudioFormatInfo &srcFormatInfo, const AudioFormatInfo &dstFormatInfo) { - FFmpegAudioConvertStream *converter = new FFmpegAudioConvertStream(srcFormatInfo, dstFormatInfo); - if (!converter->init()) { - delete converter; - return 0; - } - return converter; - } - - virtual int convert(uint8_t *inputBuffer, uint8_t *outputBuffer, int &inputSize) { - if (inputSize <= 0) { - // avoid div-by-zero in audio_resample() - return (inputSize == 0) ? 0 : -1; - } - - int inputSampleCount = inputSize / _srcFormatInfo.getFrameSize(); - int outputSampleCount = audio_resample(_resampleContext, - (short*)outputBuffer, (short*)inputBuffer, inputSampleCount); - if (outputSampleCount == -1) { - logger.error("audio_resample() failed", "TAudioConverter_FFmpeg.Convert"); - return -1; - } - return outputSampleCount * _dstFormatInfo.getFrameSize(); - } - - /** - * Destination/Source size ratio - */ - virtual double getRatio() { - return _ratio; - } - - virtual int getOutputBufferSize(int inputSize) { - return ceil(inputSize * getRatio()); - } -}; - -#endif /* _FFMPEG_AUDIO_CONVERT_H_ */ |