Resonate.h

#ifndef STK_RESONATE_H
#define STK_RESONATE_H
 
#include "Instrmnt.h"
#include "ADSR.h"
#include "BiQuad.h"
#include "Noise.h"
 
namespace stk {
 
/***************************************************/
/***************************************************/
 
class Resonate : public Instrmnt
{
 public:
  Resonate( void );
 
  ~Resonate( void );
 
  void setResonance( StkFloat frequency, StkFloat radius );
 
  void setNotch( StkFloat frequency, StkFloat radius );
 
  void setEqualGainZeroes( void ) { filter_.setEqualGainZeroes(); };
 
  void keyOn( void ) { adsr_.keyOn(); };
 
  void keyOff( void ) { adsr_.keyOff(); };
 
  void noteOn( StkFloat frequency, StkFloat amplitude );
 
  void noteOff( StkFloat amplitude );
 
  void controlChange( int number, StkFloat value );
 
  StkFloat tick( unsigned int channel = 0 );
 
 
  StkFrames& tick( StkFrames& frames, unsigned int channel = 0 );
 
 protected:
 
  ADSR     adsr_;
  BiQuad   filter_;
  Noise    noise_;
  StkFloat poleFrequency_;
  StkFloat poleRadius_;
  StkFloat zeroFrequency_;
  StkFloat zeroRadius_;
 
};
 
inline StkFloat Resonate :: tick( unsigned int )
{
  lastFrame_[0] = filter_.tick( noise_.tick() );
  lastFrame_[0] *= adsr_.tick();
  return lastFrame_[0];
}
 
inline StkFrames& Resonate :: tick( StkFrames& frames, unsigned int channel )
{
  unsigned int nChannels = lastFrame_.channels();
#if defined(_STK_DEBUG_)
  if ( channel > frames.channels() - nChannels ) {
    oStream_ << "Resonate::tick(): channel and StkFrames arguments are incompatible!";
    handleError( StkError::FUNCTION_ARGUMENT );
  }
#endif
 
  StkFloat *samples = &frames[channel];
  unsigned int j, hop = frames.channels() - nChannels;
  if ( nChannels == 1 ) {
    for ( unsigned int i=0; i<frames.frames(); i++, samples += hop )
      *samples++ = tick();
  }
  else {
    for ( unsigned int i=0; i<frames.frames(); i++, samples += hop ) {
      *samples++ = tick();
      for ( j=1; j<nChannels; j++ )
        *samples++ = lastFrame_[j];
    }
  }
 
  return frames;
}
 
} // stk namespace
 
#endif