mirror of
https://github.com/thestk/stk
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66 lines
1.5 KiB
C++
66 lines
1.5 KiB
C++
/***************************************************/
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/*! \class Sampler
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\brief STK sampling synthesis abstract base class.
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This instrument contains up to 5 attack waves,
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5 looped waves, and an ADSR envelope.
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by Perry R. Cook and Gary P. Scavone, 1995 - 2002.
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*/
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/***************************************************/
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#if !defined(__SAMPLER_H)
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#define __SAMPLER_H
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#include "Instrmnt.h"
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#include "ADSR.h"
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#include "WvIn.h"
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#include "WaveLoop.h"
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#include "OnePole.h"
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class Sampler : public Instrmnt
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{
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public:
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//! Default constructor.
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Sampler();
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//! Class destructor.
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virtual ~Sampler();
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//! Reset and clear all internal state.
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void clear();
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//! Set instrument parameters for a particular frequency.
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virtual void setFrequency(MY_FLOAT frequency) = 0;
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//! Initiate the envelopes with a key-on event and reset the attack waves.
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void keyOn();
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//! Signal a key-off event to the envelopes.
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void keyOff();
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//! Stop a note with the given amplitude (speed of decay).
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virtual void noteOff(MY_FLOAT amplitude);
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//! Compute one output sample.
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virtual MY_FLOAT tick();
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//! Perform the control change specified by \e number and \e value (0.0 - 128.0).
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virtual void controlChange(int number, MY_FLOAT value) = 0;
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protected:
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ADSR *adsr;
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WvIn *attacks[5];
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WaveLoop *loops[5];
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OnePole *filter;
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MY_FLOAT baseFrequency;
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MY_FLOAT attackRatios[5];
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MY_FLOAT loopRatios[5];
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MY_FLOAT attackGain;
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MY_FLOAT loopGain;
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int whichOne;
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};
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#endif
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