Glenn Maynard
5d64dff234
This eliminates the (optional) libresample dependency, which will clean up building and eliminate the goofy 5k DLL. It's also faster. This doesn't implement "HighQuality". That would involve changing L from 8 to 16. I might implement that in the future, but it sounds decent to me. (It's a little tricky, since PolyphaseFilter::RunPolyphaseFilter needs L to be a constant for speed.)
70 lines
2.5 KiB
C++
70 lines
2.5 KiB
C++
/* RageSoundReader_Resample_Good - fast audio resampling. */
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#ifndef RAGE_SOUND_READER_RESAMPLE_GOOD_H
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#define RAGE_SOUND_READER_RESAMPLE_GOOD_H
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#include "RageSoundReader.h"
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#include "RageSoundReader_Resample.h"
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class RageSoundResampler_Polyphase;
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/* This class changes the sampling rate of a sound. */
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class RageSoundReader_Resample_Good: public RageSoundReader_Resample
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{
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public:
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/* We own source. */
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void Open(SoundReader *source);
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int GetLength() const;
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int GetLength_Fast() const;
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int SetPosition_Accurate(int ms);
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int SetPosition_Fast(int ms);
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int Read(char *buf, unsigned len);
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RageSoundReader_Resample_Good();
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virtual ~RageSoundReader_Resample_Good();
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SoundReader *Copy() const;
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/* Change the actual sample rate of a sound. */
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void SetSampleRate( int hz );
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void SetHighQuality( bool hq ) { }
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int GetSampleRate() const { return m_iSampleRate; }
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unsigned GetNumChannels() const { return m_pSource->GetNumChannels(); }
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bool IsStreamingFromDisk() const { return m_pSource->IsStreamingFromDisk(); }
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private:
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void Reset();
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void ReopenResampler();
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vector<RageSoundResampler_Polyphase *> resamplers; /* one per channel */
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SoundReader *m_pSource;
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int m_iSampleRate;
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};
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#endif
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/*
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* (c) 2006 Glenn Maynard
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* All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, and/or sell copies of the Software, and to permit persons to
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* whom the Software is furnished to do so, provided that the above
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* copyright notice(s) and this permission notice appear in all copies of
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* the Software and that both the above copyright notice(s) and this
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* permission notice appear in supporting documentation.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
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* THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
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* INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
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* OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
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* OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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