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SingWave.h
1 #ifndef STK_SINGWAVE_H
2 #define STK_SINGWAVE_H
3 
4 #include "FileLoop.h"
5 #include "Modulate.h"
6 #include "Envelope.h"
7 
8 namespace stk {
9 
10 /***************************************************/
23 /***************************************************/
24 
25 class SingWave : public Generator
26 {
27  public:
29 
36  SingWave( std::string fileName, bool raw = false );
37 
39  ~SingWave( void );
40 
42  void reset( void ) { wave_.reset(); lastFrame_[0] = 0.0; };
43 
45  void normalize( void ) { wave_.normalize(); };
46 
48  void normalize( StkFloat peak ) { wave_.normalize( peak ); };
49 
51  void setFrequency( StkFloat frequency );
52 
54  void setVibratoRate( StkFloat rate ) { modulator_.setVibratoRate( rate ); };
55 
57  void setVibratoGain( StkFloat gain ) { modulator_.setVibratoGain( gain ); };
58 
60  void setRandomGain( StkFloat gain ) { modulator_.setRandomGain( gain ); };
61 
63  void setSweepRate( StkFloat rate ) { sweepRate_ = rate; };
64 
66  void setGainRate( StkFloat rate ) { envelope_.setRate( rate ); };
67 
69  void setGainTarget( StkFloat target ) { envelope_.setTarget( target ); };
70 
72  void noteOn( void ) { envelope_.keyOn(); };
73 
75  void noteOff( void ) { envelope_.keyOff(); };
76 
78  StkFloat lastOut( void ) const { return lastFrame_[0]; };
79 
81  StkFloat tick( void );
82 
84 
91  StkFrames& tick( StkFrames& frames, unsigned int channel = 0 );
92 
93  protected:
94 
95  FileLoop wave_;
96  Modulate modulator_;
97  Envelope envelope_;
98  Envelope pitchEnvelope_;
99  StkFloat rate_;
100  StkFloat sweepRate_;
101 
102 };
103 
104 inline StkFloat SingWave :: tick( void )
105 {
106  // Set the wave rate.
107  StkFloat newRate = pitchEnvelope_.tick();
108  newRate += newRate * modulator_.tick();
109  wave_.setRate( newRate );
110 
111  lastFrame_[0] = wave_.tick();
112  lastFrame_[0] *= envelope_.tick();
113 
114  return lastFrame_[0];
115 }
116 
117 inline StkFrames& SingWave :: tick( StkFrames& frames, unsigned int channel )
118 {
119 #if defined(_STK_DEBUG_)
120  if ( channel >= frames.channels() ) {
121  oStream_ << "SingWave::tick(): channel and StkFrames arguments are incompatible!";
122  handleError( StkError::FUNCTION_ARGUMENT );
123  }
124 #endif
125 
126  StkFloat *samples = &frames[channel];
127  unsigned int hop = frames.channels();
128  for ( unsigned int i=0; i<frames.frames(); i++, samples += hop )
129  *samples = SingWave::tick();
130 
131  return frames;
132 }
133 
134 } // stk namespace
135 
136 #endif

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