69 lines
2.3 KiB
C++
69 lines
2.3 KiB
C++
/* RageSoundResampler - Very low quality linear-interpolating audio resampler. */
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#ifndef RAGE_SOUND_RESAMPLER_H
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#define RAGE_SOUND_RESAMPLER_H
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class RageSoundResampler
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{
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public:
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RageSoundResampler();
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/* Configuration: */
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void SetChannels( int c ) { ASSERT( c < MAX_CHANNELS ); m_iChannels = c; }
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void SetInputSampleRate(int hz) { m_iInputRate = hz; }
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void SetOutputSampleRate(int hz) { m_iOutputRate = hz; }
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/* Write data to be converted. */
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void write(const void *data, int bytes);
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/* Indicate that there is no more data. */
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void eof();
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void reset();
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/* Return the number of bytes currently readable. */
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unsigned avail() const { return m_OutBuf.size() / 2; }
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/* Read converted data. Returns the number of bytes filled.
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* If eof() has been called and the output is completely
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* flushed, returns -1. */
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int read(void *data, unsigned bytes);
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private:
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int m_iInputRate, m_iOutputRate, m_iChannels;
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enum { MAX_CHANNELS = 15 };
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int16_t m_iPrevSample[MAX_CHANNELS];
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vector<int16_t> m_OutBuf;
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bool m_bAtEof;
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int m_iPos;
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};
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#endif
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/*
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* Copyright (c) 2003-2005 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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