mirror of https://github.com/AxioDL/amuse.git
46 lines
1.3 KiB
C++
46 lines
1.3 KiB
C++
#ifndef __AMUSE_ENVELOPE_HPP__
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#define __AMUSE_ENVELOPE_HPP__
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#include "AudioGroupPool.hpp"
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namespace amuse
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{
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class Voice;
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/** Per-sample state tracker for ADSR envelope data */
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class Envelope
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{
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public:
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enum class State
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{
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Attack,
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Decay,
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Sustain,
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Release,
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Complete
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};
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private:
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State m_phase = State::Attack; /**< Current envelope state */
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double m_attackTime = 0.01; /**< Time of attack in seconds */
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double m_decayTime = 0.0; /**< Time of decay in seconds */
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double m_sustainFactor = 1.0; /**< Evaluated sustain percentage */
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double m_releaseTime = 0.01; /**< Time of release in seconds */
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double m_releaseStartFactor = 0.0; /**< Level at whenever release event occurs */
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double m_curTime = 0.0; /**< Current time of envelope stage in seconds */
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bool m_adsrSet = false;
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public:
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void reset(const ADSR* adsr);
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void reset(const ADSRDLS* adsr, int8_t note, int8_t vel);
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void keyOff(const Voice& vox);
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void keyOff();
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float advance(double dt, const Voice& vox);
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float advance(double dt);
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bool isComplete() const { return m_phase == State::Complete; }
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bool isAdsrSet() const { return m_adsrSet; }
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};
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}
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#endif // __AMUSE_ENVELOPE_HPP__
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