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115 lines
3.0 KiB
115 lines
3.0 KiB
/*
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MicroMDAEPiano
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MicroMDAEPiano is a port of the MDA-EPiano sound engine
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(https://sourceforge.net/projects/mda-vst/) for the Teensy-3.5/3.6 with audio shield.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __mdaEPiano__
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#define __mdaEPiano__
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#include <Audio.h>
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#include <Arduino.h>
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#include <string.h>
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#include "config.h"
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#define NPARAMS 12 //number of parameters
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#define NPROGS 8 //number of programs
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#define NOUTS 2 //number of outputs
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#define SUSTAIN 128
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#define SILENCE 0.0001f //voice choking
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#define WAVELEN 422414 //wave data bytes
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class mdaEPianoProgram
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{
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friend class mdaEPiano;
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private:
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float param[NPARAMS];
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char name[24];
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};
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struct VOICE //voice state
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{
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int32_t delta; //sample playback
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int32_t frac;
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int32_t pos;
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int32_t end;
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int32_t loop;
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float env; //envelope
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float dec;
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float f0; //first-order LPF
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float f1;
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float ff;
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float outl;
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float outr;
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int32_t note; //remember what note triggered this
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};
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struct KGRP //keygroup
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{
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int32_t root; //MIDI root note
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int32_t high; //highest note
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int32_t pos;
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int32_t end;
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int32_t loop;
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};
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class mdaEPiano
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{
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public:
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mdaEPiano();
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~mdaEPiano();
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virtual void process(int16_t *outputs_r, int16_t *outputs_l);
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virtual bool processMidiMessage(uint8_t type, uint8_t data1, uint8_t data2);
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virtual void setProgram(int32_t program);
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virtual void setParameter(int32_t index, float value);
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virtual float getParameter(int32_t index);
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virtual void resume();
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int32_t guiUpdate;
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void guiGetDisplay(int32_t index, char *label);
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private:
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void update(); //my parameter update
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void noteOn(int32_t note, int32_t velocity);
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void fillpatch(int32_t p, char *name, float p0, float p1, float p2, float p3, float p4,
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float p5, float p6, float p7, float p8, float p9, float p10, float p11);
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mdaEPianoProgram* programs;
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float Fs, iFs;
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///global internal variables
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KGRP kgrp[34];
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VOICE voice[NVOICES];
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int32_t activevoices;
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short *waves;
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float width;
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int32_t size, sustain;
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float lfo0, lfo1, dlfo, lmod, rmod;
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float treb, tfrq, tl, tr;
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float tune, fine, random, stretch, overdrive;
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float muff, muffvel, sizevel, velsens, volume, modwhl;
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uint8_t curProgram;
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};
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#endif
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