package rice2604hw;

import com.softsynth.jsyn.*;

/** ===================================================================
    FM pair SynthNote implemented as a SynthNote @author Nick Didkovsky 
	
    MANY of ND's helpful comments removed for cleanliness...
    see original class notes.  -J.Rice 10/25/99
    ===================================================================*/

public abstract class FMSynthNote extends SynthNote {

/* Declare ports. */

 FMCircuit        fmCircuit;
 EnvelopePlayer   carAmpEnv;
 EnvelopePlayer   modAmpEnv;
 SynthEnvelope    carAmpEnvData;
 SynthEnvelope    modAmpEnvData;
 LinearLag        myLag;
 MultiplyUnit     lagMultiplier;

 double   modIndex;
 double   modfreq;
 double   fcfmRatio;
 double   numer, denom, index;

 // Construct a SynthNote that maintains numer/denom Fc:Fm ratio, with specified Modindex
 //------------------------------------------------------------------
 public FMSynthNote(double lNumer, double lDenom, double lIndex)  throws SynthException {
 
	super();
	numer = lNumer;
	denom = lDenom;
	index = lIndex;
  	fcfmRatio = numer / denom;
  	modIndex = index;
  	add(fmCircuit = new FMCircuit());
  	add(carAmpEnv = new EnvelopePlayer());
  	add(modAmpEnv = new EnvelopePlayer());
  	add(myLag = new LinearLag());     
  	add(lagMultiplier = new MultiplyUnit());

  	modAmpEnv.amplitude.setSignalType(Synth.SIGNAL_TYPE_OSC_FREQ);

    myLag.time.set(0.005);
    carAmpEnv.output.connect( 0, fmCircuit.caramplitude, 0 );
    modAmpEnv.output.connect( 0, fmCircuit.modamplitude, 0 );

    fmCircuit.output.connect(lagMultiplier.inputA);
    myLag.output.connect(lagMultiplier.inputB);

  	addPort(amplitude = fmCircuit.caramplitude, "amplitude");
  	addPort(frequency = fmCircuit.carfrequency, "frequency");
  	addPort(output = lagMultiplier.output, "output");

  	frequency.setSignalType( Synth.SIGNAL_TYPE_OSC_FREQ );
  	frequency.set( 0.0 );
  	amplitude.set( 0.0 );
}

//----------------------------------------------------
/** >>>>>>>>Override this abstract method<<<<<<<<<<<<*/

 abstract void buildEnvelopes() throws SynthException;

//----------------------------------------------------
		/** Bang the circuit to make a sound */
 public void noteOn(int time, double frq, double ampl) {
	try {

		myLag.input.set(time, 1.0); // avoid pops

		fmCircuit.carfrequency.set(time, frq);  /* Hz */
   		modfreq = frq/fcfmRatio;
   		fmCircuit.modfrequency.set(time, modfreq);

      	double modamp = modfreq * modIndex;
      	modAmpEnv.amplitude.set(time, modamp);

      	carAmpEnv.amplitude.set(time, ampl);
 	  	carAmpEnv.envelopePort.clear(time);
      	carAmpEnv.envelopePort.queue(time, carAmpEnvData, 0, carAmpEnvData.getNumFrames());
      	modAmpEnv.envelopePort.clear(time);
      	modAmpEnv.envelopePort.queue(time, modAmpEnvData, 0, modAmpEnvData.getNumFrames());
  		}
  	catch (SynthException se) {
   		System.out.println("FMSynthNote noteOn() error: " + se);
  	}
 }
//---------------------------------------------
/** Bang the circuit to shut down the sound */
 public void noteOff(int time) {
  try {
   myLag.input.set(time, 0.0);
   carAmpEnv.envelopePort.clear(time);
     modAmpEnv.envelopePort.clear(time);
  }
  catch (SynthException se) {
   System.out.println("FMSynthNote noteOff() error: " + se);
  }
 }
//---------------------------------------------
public void setModFreq(int time, double freq) throws SynthException {
	modfreq = freq;
	fmCircuit.modfrequency.set(time, freq);
}
//---------------------------------------------
public void setModIndex(double index) {
		modIndex = index;
	}
}
//====================END FMSynthNote=========================