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/*
MicroMDAEPiano
MicroMDAEPiano is a port of the MDA-EPiano sound engine
(https://sourceforge.net/projects/mda-vst/) for the Teensy-3.5/3.6 with audio shield.
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 3 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.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __mdaEPiano__
#define __mdaEPiano__
#include <Audio.h>
#include <Arduino.h>
#include <string.h>
#include "config.h"
#define NPARAMS 12 //number of parameters
#define NPROGS 1 //number of programs
#define NOUTS 2 //number of outputs
#define SUSTAIN 128
#define SILENCE 0.0001f //voice choking
#define WAVELEN 422414 //wave data bytes
// MDAEPiano parameter mapping
#define MDA_EP_DECAY 0
#define MDA_EP_RELEASE 1
#define MDA_EP_HARDNESS 2
#define MDA_EP_TREBLE 3
#define MDA_EP_PAN_TREM 4
#define MDA_EP_LFO_RATE 5
#define MDA_EP_VELOCITY_SENSE 6
#define MDA_EP_STEREO 7
#define MDA_EP_MAX_POLY 8
#define MDA_EP_TUNE 9
#define MDA_EP_DETUNE 10
#define MDA_EP_OVERDRIVE 11
class mdaEPianoProgram
{
friend class mdaEPiano;
private:
float param[NPARAMS];
};
struct VOICE //voice state
{
int32_t delta; //sample playback
int32_t frac;
int32_t pos;
int32_t end;
int32_t loop;
float env; //envelope
float dec;
float f0; //first-order LPF
float f1;
float ff;
float outl;
float outr;
int32_t note; //remember what note triggered this
};
struct KGRP //keygroup
{
int32_t root; //MIDI root note
int32_t high; //highest note
int32_t pos;
int32_t end;
int32_t loop;
};
class mdaEPiano
{
public:
mdaEPiano();
~mdaEPiano();
virtual void process(int16_t *outputs_r, int16_t *outputs_l);
void noteOn(int32_t note, int32_t velocity);
virtual bool processMidiController(uint8_t data1, uint8_t data2);
//virtual void setProgram(int32_t program);
//virtual float getParameter(int32_t index);
virtual void resume();
void reset_voices(void);
void reset_controllers(void);
void stop_voices(void);
void setDecay(float value);
void setRelease(float value);
void setHardness(float value);
void setTreble(float value);
void setPanTremolo(float value);
void setPanLFO(float value);
void setVelocitySense(float value);
void setStereo(float value);
void setMaxPolyphony(uint8_t value);
void setTune(float value);
void setDetune(float value);
void setOverdrive(float value);
void setLoudness(float value);
int32_t getActiveVoices(void);
private:
void update(); //my parameter update
void fillpatch(int32_t p, char *name, float p0, float p1, float p2, float p3, float p4,
float p5, float p6, float p7, float p8, float p9, float p10, float p11);
void setParameter(int32_t index, float value);
mdaEPianoProgram* programs;
float Fs, iFs;
///global internal variables
uint8_t max_polyphony;
KGRP kgrp[34];
VOICE voice[NVOICES];
int32_t activevoices;
short *waves;
float width;
int32_t size, sustain;
float lfo0, lfo1, dlfo, lmod, rmod;
float treb, tfrq, tl, tr;
float tune, fine, random, stretch, overdrive;
float muff, muffvel, sizevel, velsens, modwhl;
float volume;
float vol;
//uint8_t curProgram;
};
#endif