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87 lines
2.1 KiB
87 lines
2.1 KiB
#pragma once
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#ifndef DSY_VARIABLESHAPEOSCILLATOR_H
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#define DSY_VARIABLESHAPEOSCILLATOR_H
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#include <stdint.h>
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#ifdef __cplusplus
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/** @file variableshapeosc.h */
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namespace daisysp
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{
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/**
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@brief Variable Waveshape Oscillator.
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@author Ben Sergentanis
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@date Dec 2020
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Continuously variable waveform. \n \n
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Ported from pichenettes/eurorack/plaits/dsp/oscillator/variable_shape_oscillator.h \n
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\n to an independent module. \n
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Original code written by Emilie Gillet in 2016. \n
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*/
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class VariableShapeOscillator
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{
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public:
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VariableShapeOscillator() {}
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~VariableShapeOscillator() {}
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/** Initialize the oscillator
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\param sample_rate Audio engine sample rate
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*/
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void Init(float sample_rate);
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/** Get next sample
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*/
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float Process();
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/** Set master freq.
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\param frequency Freq in Hz.
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*/
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void SetFreq(float frequency);
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/** Set pulse width / saw, ramp, tri.
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\param pw PW when shape is square. Saw, ramp, tri otherwise.
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*/
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void SetPW(float pw);
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/** Switch from saw/ramp/tri to square.
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\param waveshape 0 is saw/ramp/tri, 1 is square.
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*/
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void SetWaveshape(float waveshape);
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/** Whether or not to sync to the sync oscillator
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\param enable_sync True to turn sync on.
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*/
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void SetSync(bool enable_sync);
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/** Set sync oscillator freq.
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\param frequency Freq in Hz.
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*/
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void SetSyncFreq(float frequency);
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private:
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float ComputeNaiveSample(float phase,
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float pw,
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float slope_up,
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float slope_down,
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float triangle_amount,
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float square_amount);
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float sample_rate_;
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bool enable_sync_;
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// Oscillator state.
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float master_phase_;
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float slave_phase_;
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float next_sample_;
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float previous_pw_;
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bool high_;
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// For interpolation of parameters.
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float master_frequency_;
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float slave_frequency_;
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float pw_;
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float waveshape_;
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};
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} // namespace daisysp
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#endif
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#endif |