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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
/*
Rubber Band
An audio time-stretching and pitch-shifting library.
Copyright 2007 Chris Cannam.
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. See the file
COPYING included with this distribution for more information.
*/
#ifndef _RUBBERBAND_TIMESTRETCHER_H_
#define _RUBBERBAND_TIMESTRETCHER_H_
#include <sys/types.h>
namespace RubberBand
{
/**
* Base class for time stretchers. RubberBand currently provides only
* a single subclass implementation.
*
* @see RubberBandStretcher
*/
class TimeStretcher
{
public:
TimeStretcher(size_t sampleRate, size_t channels) :
m_sampleRate(sampleRate),
m_channels(channels)
{ }
virtual ~TimeStretcher()
{ }
virtual void reset() = 0;
virtual void setTimeRatio(double ratio) = 0;
virtual void setPitchScale(double scale) = 0;
virtual size_t getLatency() const = 0;
virtual void study(const float *const *input, size_t samples, bool final) = 0;
virtual size_t getSamplesRequired() const = 0;
virtual void process(const float *const *input, size_t samples, bool final) = 0;
virtual int available() const = 0;
virtual size_t retrieve(float *const *output, size_t samples) const = 0;
protected:
size_t m_sampleRate;
size_t m_channels;
};
}
#endif
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