RageSoundResampler.h

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#ifndef RAGE_SOUND_RESAMPLER_H
#define RAGE_SOUND_RESAMPLER_H

class RageSoundResampler
{
        int InputRate, OutputRate, Channels;

        enum { MAX_CHANNELS = 15 };
        int16_t prev[MAX_CHANNELS];

        vector<int16_t> outbuf;
        bool at_eof;
        int ipos;

        float t[MAX_CHANNELS];

public:
        RageSoundResampler();

        /* Configuration: */
        void SetChannels( int c ) { ASSERT( c < MAX_CHANNELS ); Channels = c; }
        void SetInputSampleRate(int hz) { InputRate = hz; }
        void SetOutputSampleRate(int hz) { OutputRate = hz; }

        /* Write data to be converted. */
        void write(const void *data, int bytes);

        /* Indicate that there is no more data. */
        void eof();

        void reset();

        /* Return the number of bytes currently readable. */
        unsigned avail() const { return outbuf.size() / 2; }

        /* Read converted data.  Returns the number of bytes filled.
         * If eof() has been called and the output is completely
         * flushed, returns -1. */
        int read(void *data, unsigned bytes);
};

#endif

/*
 * Copyright (c) 2003 Glenn Maynard
 * All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, and/or sell copies of the Software, and to permit persons to
 * whom the Software is furnished to do so, provided that the above
 * copyright notice(s) and this permission notice appear in all copies of
 * the Software and that both the above copyright notice(s) and this
 * permission notice appear in supporting documentation.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
 * THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
 * INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
 * OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
 * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
 * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */

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