cannam@95: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
cannam@95: 
cannam@95: /*
cannam@95:     Rubber Band Library
cannam@95:     An audio time-stretching and pitch-shifting library.
cannam@95:     Copyright 2007-2012 Particular Programs Ltd.
cannam@95: 
cannam@95:     This program is free software; you can redistribute it and/or
cannam@95:     modify it under the terms of the GNU General Public License as
cannam@95:     published by the Free Software Foundation; either version 2 of the
cannam@95:     License, or (at your option) any later version.  See the file
cannam@95:     COPYING included with this distribution for more information.
cannam@95: 
cannam@95:     Alternatively, if you have a valid commercial licence for the
cannam@95:     Rubber Band Library obtained by agreement with the copyright
cannam@95:     holders, you may redistribute and/or modify it under the terms
cannam@95:     described in that licence.
cannam@95: 
cannam@95:     If you wish to distribute code using the Rubber Band Library
cannam@95:     under terms other than those of the GNU General Public License,
cannam@95:     you must obtain a valid commercial licence before doing so.
cannam@95: */
cannam@95: 
cannam@95: #ifndef _RUBBERBAND_PITCH_SHIFTER_H_
cannam@95: #define _RUBBERBAND_PITCH_SHIFTER_H_
cannam@95: 
cannam@95: #include <ladspa.h>
cannam@95: 
cannam@95: #include "base/RingBuffer.h"
cannam@95: 
cannam@95: namespace RubberBand {
cannam@95: class RubberBandStretcher;
cannam@95: }
cannam@95: 
cannam@95: class RubberBandPitchShifter
cannam@95: {
cannam@95: public:
cannam@95:     static const LADSPA_Descriptor *getDescriptor(unsigned long index);
cannam@95:     
cannam@95: protected:
cannam@95:     RubberBandPitchShifter(int sampleRate, size_t channels);
cannam@95:     ~RubberBandPitchShifter();
cannam@95: 
cannam@95:     enum {
cannam@95:         LatencyPort      = 0,
cannam@95: 	OctavesPort      = 1,
cannam@95: 	SemitonesPort    = 2,
cannam@95: 	CentsPort        = 3,
cannam@95:         CrispnessPort    = 4,
cannam@95: 	FormantPort      = 5,
cannam@95: 	FastPort         = 6,
cannam@95: 	InputPort1       = 7,
cannam@95:         OutputPort1      = 8,
cannam@95:         PortCountMono    = OutputPort1 + 1,
cannam@95:         InputPort2       = 9,
cannam@95:         OutputPort2      = 10,
cannam@95:         PortCountStereo  = OutputPort2 + 1
cannam@95:     };
cannam@95: 
cannam@95:     static const char *const portNamesMono[PortCountMono];
cannam@95:     static const LADSPA_PortDescriptor portsMono[PortCountMono];
cannam@95:     static const LADSPA_PortRangeHint hintsMono[PortCountMono];
cannam@95: 
cannam@95:     static const char *const portNamesStereo[PortCountStereo];
cannam@95:     static const LADSPA_PortDescriptor portsStereo[PortCountStereo];
cannam@95:     static const LADSPA_PortRangeHint hintsStereo[PortCountStereo];
cannam@95: 
cannam@95:     static const LADSPA_Properties properties;
cannam@95: 
cannam@95:     static const LADSPA_Descriptor ladspaDescriptorMono;
cannam@95:     static const LADSPA_Descriptor ladspaDescriptorStereo;
cannam@95: 
cannam@95:     static LADSPA_Handle instantiate(const LADSPA_Descriptor *, unsigned long);
cannam@95:     static void connectPort(LADSPA_Handle, unsigned long, LADSPA_Data *);
cannam@95:     static void activate(LADSPA_Handle);
cannam@95:     static void run(LADSPA_Handle, unsigned long);
cannam@95:     static void deactivate(LADSPA_Handle);
cannam@95:     static void cleanup(LADSPA_Handle);
cannam@95: 
cannam@95:     void activateImpl();
cannam@95:     void runImpl(unsigned long);
cannam@95:     void runImpl(unsigned long, unsigned long offset);
cannam@95:     void updateRatio();
cannam@95:     void updateCrispness();
cannam@95:     void updateFormant();
cannam@95:     void updateFast();
cannam@95: 
cannam@95:     float *m_input[2];
cannam@95:     float *m_output[2];
cannam@95:     float *m_latency;
cannam@95:     float *m_cents;
cannam@95:     float *m_semitones;
cannam@95:     float *m_octaves;
cannam@95:     float *m_crispness;
cannam@95:     float *m_formant;
cannam@95:     float *m_fast;
cannam@95:     double m_ratio;
cannam@95:     double m_prevRatio;
cannam@95:     int m_currentCrispness;
cannam@95:     bool m_currentFormant;
cannam@95:     bool m_currentFast;
cannam@95: 
cannam@95:     size_t m_blockSize;
cannam@95:     size_t m_reserve;
cannam@95:     size_t m_minfill;
cannam@95: 
cannam@95:     RubberBand::RubberBandStretcher *m_stretcher;
cannam@95:     RubberBand::RingBuffer<float> *m_outputBuffer[2];
cannam@95:     float *m_scratch[2];
cannam@95: 
cannam@95:     int m_sampleRate;
cannam@95:     size_t m_channels;
cannam@95: };
cannam@95: 
cannam@95: 
cannam@95: #endif