Granulator.h

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//
//  Granulator.h -- CSL class for doing granular synthesis
//
//  See the copyright notice and acknowledgment of authors in the file COPYRIGHT
//

#ifndef CSL_GRAN_H
#define CSL_GRAN_H

#include "CSL_Core.h"       // my superclass
#include "ThreadUtilities.h"

namespace csl {             // my namespace

#define MAXGRAINS 200


typedef struct Grain {
    float amplitude;        
    float rate;             
    float duration;         
    float time;             
    float pan;              
    float env;              
    float position;         
    unsigned delay;         
    float * samples;        
    unsigned numSamples;    
    Grain * nextGrain;      
} Grain;


typedef enum {          
    kFree,              
    kDSP,               
    kSched,             
} GrainulatorState;


class GrainCloud {
public:
    GrainCloud();               
    ~GrainCloud();
            
    void startThreads();        
    void reset();               
                            // public data members (set from GUI)
    float mRateBase;            
    float mRateRange;           
    float mOffsetBase;          
    float mOffsetRange;         
    float mDensityBase;         
    float mDensityRange;        
    float mDurationBase;        
    float mDurationRange;       
    float mWidthBase;           
    float mWidthRange;          
    float mVolumeBase;          
    float mVolumeRange;         
    float mEnvelopeBase;        
    float mEnvelopeRange;       

    float * mSamples;           
    unsigned numSamples;        
    bool isPlaying;             

    Grain * mSilentGrains;      
    Grain * mPlayingGrains;     
    GrainulatorState gState;    
    int64 gNow;                 
    float sampsPerTick;         

protected:
    CThread * spawnerThread;    
    CThread * reaperThread;     
    bool threadOn;              
};


class GrainPlayer : public UnitGenerator {
public:
    GrainPlayer(GrainCloud * cloud);
    ~GrainPlayer();
    void nextBuffer(Buffer & outputBuffer) throw (CException);
    
    GrainCloud * mCloud;        
};

}       // end of namespace

#endif

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