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/*
* ZamSynth polyphonic synthesiser
* Copyright (C) 2014 Damien Zammit <damien@zamaudio.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* For a full copy of the GNU General Public License see the doc/GPL.txt file.
*/
#ifndef ZAMSYNTHPLUGIN_HPP_INCLUDED
#define ZAMSYNTHPLUGIN_HPP_INCLUDED
#include <string.h>
#include "DistrhoPlugin.hpp"
#define MAX_VOICES 128
#define AREAHEIGHT 250
#define MAX_ENV AREAHEIGHT
START_NAMESPACE_DISTRHO
// -----------------------------------------------------------------------
class ZamSynthPlugin : public Plugin
{
public:
enum Parameters
{
paramGain,
paramSpeed,
paramGraph,
paramCount
};
ZamSynthPlugin();
protected:
// -------------------------------------------------------------------
// Information
const char* getLabel() const noexcept override
{
return "ZamSynth";
}
const char* getDescription() const noexcept override
{
return "";
}
const char* getMaker() const noexcept override
{
return "Damien Zammit";
}
const char* getHomePage() const noexcept override
{
return "http://www.zamaudio.com";
}
const char* getLicense() const noexcept override
{
return "GPL v2+";
}
uint32_t getVersion() const noexcept override
{
return d_version(3, 10, 0);
}
int64_t getUniqueId() const noexcept override
{
return d_cconst('Z', 'S', 'T', 'H');
}
// -------------------------------------------------------------------
// Init
void initParameter(uint32_t index, Parameter& parameter) override;
// -------------------------------------------------------------------
// Internal data
float getParameterValue(uint32_t index) const override;
void setParameterValue(uint32_t index, float value) override;
// -------------------------------------------------------------------
// Process
static inline float
sanitize_denormal(float v) {
if(!std::isnormal(v))
return 0.f;
return v;
}
static inline float
from_dB(float gdb) {
return (exp(gdb/20.f*log(10.f)));
}
static inline float
to_dB(float g) {
return (20.f*log10(g));
}
float wavetable(float in);
void activate() override;
void run(const float** inputs, float** outputs, uint32_t frames,
const MidiEvent* midievent, uint32_t midicount) override;
void setState(const char* key, const char* value) override;
void initState(unsigned int index, String& key, String& defval) override;
// -------------------------------------------------------------------
private:
float gain, graph, speed;
int nvoices;
float wave_y[AREAHEIGHT];
float env_y[MAX_ENV];
typedef struct v {
bool playing;
int notenum;
int envpos;
int slowcount;
float curamp;
float vi;
float rampstate;
} Voice;
Voice voice[128];
Voice* curvoice;
};
// -----------------------------------------------------------------------
END_NAMESPACE_DISTRHO
#endif // ZAMSYNTH_HPP_INCLUDED
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