92 lines
2.5 KiB
C
92 lines
2.5 KiB
C
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
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/*
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Rubber Band
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An audio time-stretching and pitch-shifting library.
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Copyright 2007 Chris Cannam.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version. See the file
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COPYING included with this distribution for more information.
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*/
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#ifndef _RUBBERBAND_PITCH_SHIFTER_H_
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#define _RUBBERBAND_PITCH_SHIFTER_H_
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#include <ladspa.h>
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#include "RingBuffer.h"
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namespace RubberBand {
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class RubberBandStretcher;
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}
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class RubberBandPitchShifter
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{
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public:
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static const LADSPA_Descriptor *getDescriptor(unsigned long index);
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protected:
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RubberBandPitchShifter(int sampleRate, size_t channels);
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~RubberBandPitchShifter();
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enum {
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LatencyPort = 0,
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OctavesPort = 1,
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SemitonesPort = 2,
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CentsPort = 3,
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InputPort1 = 4,
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OutputPort1 = 5,
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PortCountMono = 6,
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InputPort2 = 6,
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OutputPort2 = 7,
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PortCountStereo = 8
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};
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static const char *const portNamesMono[PortCountMono];
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static const LADSPA_PortDescriptor portsMono[PortCountMono];
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static const LADSPA_PortRangeHint hintsMono[PortCountMono];
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static const char *const portNamesStereo[PortCountStereo];
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static const LADSPA_PortDescriptor portsStereo[PortCountStereo];
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static const LADSPA_PortRangeHint hintsStereo[PortCountStereo];
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static const LADSPA_Properties properties;
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static const LADSPA_Descriptor ladspaDescriptorMono;
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static const LADSPA_Descriptor ladspaDescriptorStereo;
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static LADSPA_Handle instantiate(const LADSPA_Descriptor *, unsigned long);
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static void connectPort(LADSPA_Handle, unsigned long, LADSPA_Data *);
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static void activate(LADSPA_Handle);
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static void run(LADSPA_Handle, unsigned long);
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static void deactivate(LADSPA_Handle);
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static void cleanup(LADSPA_Handle);
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void runImpl(unsigned long);
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void updateRatio();
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float *m_input[2];
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float *m_output[2];
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float *m_latency;
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float *m_cents;
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float *m_semitones;
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float *m_octaves;
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double m_ratio;
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double m_prevRatio;
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size_t m_extraLatency;
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RubberBand::RubberBandStretcher *m_stretcher;
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RubberBand::RingBuffer<float> *m_outputBuffer[2];
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float *m_scratch[2];
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int m_sampleRate;
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size_t m_channels;
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};
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#endif
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