FM.h

#ifndef STK_FM_H
#define STK_FM_H

#include "Instrmnt.h"
#include "ADSR.h"
#include "FileLoop.h"
#include "SineWave.h"
#include "TwoZero.h"

namespace stk {

/***************************************************/
/***************************************************/

class FM : public Instrmnt
{
 public:

  FM( unsigned int operators = 4 );

  virtual ~FM( void );

  void clear( void );

  void loadWaves( const char **filenames );

  virtual void setFrequency( StkFloat frequency );

  void setRatio( unsigned int waveIndex, StkFloat ratio );

  void setGain( unsigned int waveIndex, StkFloat gain );

  void setModulationSpeed( StkFloat mSpeed ) { vibrato_.setFrequency( mSpeed ); };

  void setModulationDepth( StkFloat mDepth ) { modDepth_ = mDepth; };

  void setControl1( StkFloat cVal ) { control1_ = cVal * 2.0; };

  void setControl2( StkFloat cVal ) { control2_ = cVal * 2.0; };

  void keyOn( void );

  void keyOff( void );

  void noteOff( StkFloat amplitude );

  virtual void controlChange( int number, StkFloat value );

  virtual StkFloat tick( unsigned int ) = 0;


  virtual StkFrames& tick( StkFrames& frames, unsigned int channel = 0 ) = 0;

 protected:

  std::vector<ADSR *> adsr_; 
  std::vector<FileLoop *> waves_;
  SineWave vibrato_;
  TwoZero  twozero_;
  unsigned int nOperators_;
  StkFloat baseFrequency_;
  std::vector<StkFloat> ratios_;
  std::vector<StkFloat> gains_;
  StkFloat modDepth_;
  StkFloat control1_;
  StkFloat control2_;
  StkFloat fmGains_[100];
  StkFloat fmSusLevels_[16];
  StkFloat fmAttTimes_[32];

};

} // stk namespace

#endif