/usr/include/stk/Simple.h is in libstk0-dev 4.4.4-5+deb8u1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 | #ifndef STK_SIMPLE_H
#define STK_SIMPLE_H
#include "Instrmnt.h"
#include "ADSR.h"
#include "FileLoop.h"
#include "OnePole.h"
#include "BiQuad.h"
#include "Noise.h"
namespace stk {
/***************************************************/
/*! \class Simple
\brief STK wavetable/noise instrument.
This class combines a looped wave, a
noise source, a biquad resonance filter,
a one-pole filter, and an ADSR envelope
to create some interesting sounds.
Control Change Numbers:
- Filter Pole Position = 2
- Noise/Pitched Cross-Fade = 4
- Envelope Rate = 11
- Gain = 128
by Perry R. Cook and Gary P. Scavone, 1995-2012.
*/
/***************************************************/
class Simple : public Instrmnt
{
public:
//! Class constructor.
/*!
An StkError will be thrown if the rawwave path is incorrectly set.
*/
Simple( void );
//! Class destructor.
~Simple( void );
//! Clear internal states.
void clear( void );
//! Set instrument parameters for a particular frequency.
void setFrequency( StkFloat frequency );
//! Start envelope toward "on" target.
void keyOn( void );
//! Start envelope toward "off" target.
void keyOff( void );
//! Start a note with the given frequency and amplitude.
void noteOn( StkFloat frequency, StkFloat amplitude );
//! Stop a note with the given amplitude (speed of decay).
void noteOff( StkFloat amplitude );
//! Perform the control change specified by \e number and \e value (0.0 - 128.0).
void controlChange( int number, StkFloat value );
//! Compute and return one output sample.
StkFloat tick( unsigned int channel = 0 );
//! Fill a channel of the StkFrames object with computed outputs.
/*!
The \c channel argument must be less than the number of
channels in the StkFrames argument (the first channel is specified
by 0). However, range checking is only performed if _STK_DEBUG_
is defined during compilation, in which case an out-of-range value
will trigger an StkError exception.
*/
StkFrames& tick( StkFrames& frames, unsigned int channel = 0 );
protected:
ADSR adsr_;
FileLoop *loop_;
OnePole filter_;
BiQuad biquad_;
Noise noise_;
StkFloat baseFrequency_;
StkFloat loopGain_;
};
inline StkFloat Simple :: tick( unsigned int )
{
lastFrame_[0] = loopGain_ * loop_->tick();
biquad_.tick( noise_.tick() );
lastFrame_[0] += (1.0 - loopGain_) * biquad_.lastOut();
lastFrame_[0] = filter_.tick( lastFrame_[0] );
lastFrame_[0] *= adsr_.tick();
return lastFrame_[0];
}
inline StkFrames& Simple :: tick( StkFrames& frames, unsigned int channel )
{
unsigned int nChannels = lastFrame_.channels();
#if defined(_STK_DEBUG_)
if ( channel > frames.channels() - nChannels ) {
oStream_ << "Simple::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
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