paulxstretch/Source/PS_Source/StretchSource.h

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/*
Copyright (C) 2006-2011 Nasca Octavian Paul
Author: Nasca Octavian Paul
Copyright (C) 2017 Xenakios
This program is free software; you can redistribute it and/or modify
it under the terms of version 2 of the GNU General Public License
as published by the Free Software Foundation.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License (version 2) for more details.
You should have received a copy of the GNU General Public License (version 2)
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#pragma once
#include "../JuceLibraryCode/JuceHeader.h"
#include "Input/AInputS.h"
#include "ProcessedStretch.h"
#include <mutex>
#include "../WDL/resample.h"
class StretchAudioSource final : public PositionableAudioSource
{
public:
StretchAudioSource() {}
StretchAudioSource(int initialnumoutchans, AudioFormatManager* afm);
~StretchAudioSource();
// Inherited via PositionableAudioSource
void prepareToPlay(int samplesPerBlockExpected, double sampleRate) override;
void releaseResources() override;
void getNextAudioBlock(const AudioSourceChannelInfo & bufferToFill) override;
void setNextReadPosition(int64 newPosition) override;
int64 getNextReadPosition() const override;
int64 getTotalLength() const override;
bool isLooping() const override;
String setAudioFile(File file);
File getAudioFile();
AudioBuffer<float>* getSourceAudioBuffer();
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void setNumOutChannels(int chans);
int getNumOutChannels() { return m_num_outchans; }
double getInfilePositionPercent();
double getInfilePositionSeconds();
double getInfileLengthSeconds();
void setRate(double rate);
double getRate() { return m_playrate; }
void setProcessParameters(ProcessParameters* pars);
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const ProcessParameters& getProcessParameters();
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void setFFTSize(int size);
int getFFTSize() { return m_process_fftsize; }
double getFreezePos() const { return m_freeze_pos; }
void setFreezing(bool b) { m_freezing = b; }
bool isFreezing() { return m_freezing; }
void setPaused(bool b);
bool isPaused() const;
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void seekPercent(double pos);
double getOutputDurationSecondsForRange(Range<double> range, int fftsize);
void setOnsetDetection(double x);
void setPlayRange(Range<double> playrange, bool isloop);
Range<double> getPlayRange() { return m_playrange; }
bool isLoopEnabled();
bool hasReachedEnd();
bool isResampling();
std::vector<SpectrumProcess> getSpectrumProcessOrder();
void setSpectrumProcessOrder(std::vector<SpectrumProcess> order);
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void setFFTWindowingType(int windowtype);
int getFFTWindowingType() { return m_fft_window_type; }
std::pair<Range<double>,Range<double>> getFileCachedRangesNormalized();
void setFreeFilterEnvelope(shared_envelope env);
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ValueTree getStateTree();
void setStateTree(ValueTree state);
void setClippingEnabled(bool b) { m_clip_output = b; }
bool isLoopingEnabled();
void setLoopingEnabled(bool b);
void setMaxLoops(int64_t numloops) { m_maxloops = numloops; }
void setAudioBufferAsInputSource(AudioBuffer<float>* buf, int sr, int len);
void setMainVolume(double decibels);
double getMainVolume() const { return m_main_volume; }
void setLoopXFadeLength(double lenseconds);
double getLoopXFadeLengtj() const { return m_loopxfadelen; }
void setPreviewDry(bool b);
bool isPreviewingDry() const;
int m_param_change_count = 0;
CriticalSection* getMutex() { return &m_cs; }
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private:
CircularBuffer<float> m_stretchoutringbuf{ 1024 * 1024 };
AudioBuffer<float> m_file_inbuf;
LinearSmoothedValue<double> m_vol_smoother;
std::unique_ptr<AInputS> m_inputfile;
std::vector<std::shared_ptr<ProcessedStretch>> m_stretchers;
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std::function<void(StretchAudioSource*)> SourceEndedCallback;
bool m_firstbuffer = false;
bool m_output_has_begun = false;
int m_num_outchans = 0;
double m_outsr = 44100.0;
int m_process_fftsize = 0;
int m_fft_window_type = -1;
double m_main_volume = 0.0;
double m_loopxfadelen = 0.0;
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ProcessParameters m_ppar;
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double m_playrate = 1.0;
double m_lastplayrate = 0.0;
double m_onsetdetection = 0.0;
double m_seekpos = 0.0;
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bool m_freezing = false;
int m_pause_state = 0;
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Range<double> m_playrange{ 0.0,1.0 };
int64_t m_rand_count = 0;
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bool m_stream_end_reached = false;
int64_t m_output_silence_counter = 0;
File m_curfile;
int64_t m_maxloops = 0;
std::unique_ptr<WDL_Resampler> m_resampler;
std::vector<double> m_resampler_outbuf;
CriticalSection m_cs;
std::vector<SpectrumProcess> m_specproc_order;
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bool m_stop_play_requested = false;
double m_freeze_pos = 0.0;
int64_t m_output_counter = 0;
int64_t m_output_length = 0;
bool m_clip_output = true;
void initObjects();
shared_envelope m_free_filter_envelope;
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AudioFormatManager* m_afm = nullptr;
struct
{
AudioBuffer<float> buffer;
int state = 0; // 0 not active, 1 fill xfade buffer, 2 play xfade buffer
int xfade_len = 0;
int counter = 0;
int requested_fft_size = 0;
File requested_file;
} m_xfadetask;
int m_pause_fade_counter = 0;
bool m_preview_dry = false;
AudioBuffer<float> m_drypreviewbuf;
void playDrySound(const AudioSourceChannelInfo & bufferToFill);
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};