alphaosc/plugin/alphaosc.hpp

/*
   Alpha Juno Oscillator POC

   Copyright 2024 Gordon JC Pearce <gordonjcp@gjcp.net>

   Permission to use, copy, modify, and/or distribute this software for any
   purpose with or without fee is hereby granted, provided that the above
   copyright notice and this permission notice appear in all copies.

   THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
   SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
   OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
   CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/

#pragma once

#include "DistrhoPlugin.hpp"

START_NAMESPACE_DISTRHO

class AlphaOsc : public Plugin {
   public:
    enum Parameters {
        pSqrMode,
        pSawMode,
        pSubMode,
        pSubLevel,

        pPWMRate,
        pPWMDepth,

        parameterCount
    };

    AlphaOsc();

   protected:
    const char *getLabel() const override { return "AlphaOsc"; }
    const char *getDescription() const override {
        return "Alpha Juno Oscillator Proof of Concept";
    }
    const char *getMaker() const override { return "Gordonjcp"; }
    const char *getLicense() const override { return "ISC"; }
    uint32_t getVersion() const override { return d_version(1, 0, 0); }
    int64_t getUniqueId() const override { return d_cconst('A', 'O', 's', 'c'); }

    // Initialisation
    void initAudioPort(bool input, uint32_t index, AudioPort &port) override;
    void initParameter(uint32_t index, Parameter &parameter) override;

    void activate() override;

    void setParameterValue(uint32_t index, float value) override;
    float getParameterValue(uint32_t index) const override;

    // Processing
    void run(const float **, float **outputs, uint32_t frames, const MidiEvent *midiEvents, uint32_t midiEventCount) override;

   private:
    double sampleRate;
    uint32_t omega, lfoOmega;
    uint32_t phase, lfoPhase;

    uint8_t notequeue[8];

    uint8_t note = 48;   // last heard MIDI note
    float freq = 130.8;  // C3, an octave below Middle C
    float gate = 0;      // output attenuation

    float pwmrate = 0, pwmdepth = 0, sublevel = 0;
    uint8_t sqrmode = 0, sawmode = 0, submode = 0;

    float hpfx = 0, hpfy = 0;

    DISTRHO_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(AlphaOsc);
};

END_NAMESPACE_DISTRHO