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BA_MicroMDAEPiano/mdaEPiano.cpp

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#include "mdaEPianoData.h"
#include "mdaEPiano.h"
#include <stdio.h>
#include <math.h>
#include "config.h"
// AudioEffect *createEffectInstance(audioMasterCallback audioMaster)
//{
// return new mdaEPiano(audioMaster);
//}
mdaEPiano::mdaEPiano() // mdaEPiano::mdaEPiano(audioMasterCallback audioMaster) : AudioEffectX(audioMaster, NPROGS, NPARAMS)
{
Fs = SAMPLE_RATE; iFs = 1.0f/Fs; //just in case...
programs = new mdaEPianoProgram[NPROGS];
if(programs)
{
//fill patches...
int32_t i=0;
fillpatch(i++, "Default", 0.500f, 0.500f, 0.500f, 0.500f, 0.500f, 0.650f, 0.250f, 0.500f, 0.50f, 0.500f, 0.146f, 0.000f);
fillpatch(i++, "Bright", 0.500f, 0.500f, 1.000f, 0.800f, 0.500f, 0.650f, 0.250f, 0.500f, 0.50f, 0.500f, 0.146f, 0.500f);
fillpatch(i++, "Mellow", 0.500f, 0.500f, 0.000f, 0.000f, 0.500f, 0.650f, 0.250f, 0.500f, 0.50f, 0.500f, 0.246f, 0.000f);
fillpatch(i++, "Autopan", 0.500f, 0.500f, 0.500f, 0.500f, 0.250f, 0.650f, 0.250f, 0.500f, 0.50f, 0.500f, 0.246f, 0.000f);
fillpatch(i++, "Tremolo", 0.500f, 0.500f, 0.500f, 0.500f, 0.750f, 0.650f, 0.250f, 0.500f, 0.50f, 0.500f, 0.246f, 0.000f);
fillpatch(i++, "(default)", 0.500f, 0.500f, 0.500f, 0.500f, 0.500f, 0.650f, 0.250f, 0.500f, 0.50f, 0.500f, 0.146f, 0.000f);
fillpatch(i++, "(default)", 0.500f, 0.500f, 0.500f, 0.500f, 0.500f, 0.650f, 0.250f, 0.500f, 0.50f, 0.500f, 0.146f, 0.000f);
fillpatch(i++, "(default)", 0.500f, 0.500f, 0.500f, 0.500f, 0.500f, 0.650f, 0.250f, 0.500f, 0.50f, 0.500f, 0.146f, 0.000f);
setProgram(0);
}
/*
if(audioMaster)
{
setNumInputs(0);
setNumOutputs(NOUTS);
canProcessReplacing();
isSynth();
setUniqueID('MDAe'); ///
}
*/
waves = (short*)epianoData;
//Waveform data and keymapping
kgrp[ 0].root = 36; kgrp[ 0].high = 39; //C1
kgrp[ 3].root = 43; kgrp[ 3].high = 45; //G1
kgrp[ 6].root = 48; kgrp[ 6].high = 51; //C2
kgrp[ 9].root = 55; kgrp[ 9].high = 57; //G2
kgrp[12].root = 60; kgrp[12].high = 63; //C3
kgrp[15].root = 67; kgrp[15].high = 69; //G3
kgrp[18].root = 72; kgrp[18].high = 75; //C4
kgrp[21].root = 79; kgrp[21].high = 81; //G4
kgrp[24].root = 84; kgrp[24].high = 87; //C5
kgrp[27].root = 91; kgrp[27].high = 93; //G5
kgrp[30].root = 96; kgrp[30].high =999; //C6
kgrp[0].pos = 0; kgrp[0].end = 8476; kgrp[0].loop = 4400;
kgrp[1].pos = 8477; kgrp[1].end = 16248; kgrp[1].loop = 4903;
kgrp[2].pos = 16249; kgrp[2].end = 34565; kgrp[2].loop = 6398;
kgrp[3].pos = 34566; kgrp[3].end = 41384; kgrp[3].loop = 3938;
kgrp[4].pos = 41385; kgrp[4].end = 45760; kgrp[4].loop = 1633; //was 1636;
kgrp[5].pos = 45761; kgrp[5].end = 65211; kgrp[5].loop = 5245;
kgrp[6].pos = 65212; kgrp[6].end = 72897; kgrp[6].loop = 2937;
kgrp[7].pos = 72898; kgrp[7].end = 78626; kgrp[7].loop = 2203; //was 2204;
kgrp[8].pos = 78627; kgrp[8].end = 100387; kgrp[8].loop = 6368;
kgrp[9].pos = 100388; kgrp[9].end = 116297; kgrp[9].loop = 10452;
kgrp[10].pos = 116298; kgrp[10].end = 127661; kgrp[10].loop = 5217; //was 5220;
kgrp[11].pos = 127662; kgrp[11].end = 144113; kgrp[11].loop = 3099;
kgrp[12].pos = 144114; kgrp[12].end = 152863; kgrp[12].loop = 4284;
kgrp[13].pos = 152864; kgrp[13].end = 173107; kgrp[13].loop = 3916;
kgrp[14].pos = 173108; kgrp[14].end = 192734; kgrp[14].loop = 2937;
kgrp[15].pos = 192735; kgrp[15].end = 204598; kgrp[15].loop = 4732;
kgrp[16].pos = 204599; kgrp[16].end = 218995; kgrp[16].loop = 4733;
kgrp[17].pos = 218996; kgrp[17].end = 233801; kgrp[17].loop = 2285;
kgrp[18].pos = 233802; kgrp[18].end = 248011; kgrp[18].loop = 4098;
kgrp[19].pos = 248012; kgrp[19].end = 265287; kgrp[19].loop = 4099;
kgrp[20].pos = 265288; kgrp[20].end = 282255; kgrp[20].loop = 3609;
kgrp[21].pos = 282256; kgrp[21].end = 293776; kgrp[21].loop = 2446;
kgrp[22].pos = 293777; kgrp[22].end = 312566; kgrp[22].loop = 6278;
kgrp[23].pos = 312567; kgrp[23].end = 330200; kgrp[23].loop = 2283;
kgrp[24].pos = 330201; kgrp[24].end = 348889; kgrp[24].loop = 2689;
kgrp[25].pos = 348890; kgrp[25].end = 365675; kgrp[25].loop = 4370;
kgrp[26].pos = 365676; kgrp[26].end = 383661; kgrp[26].loop = 5225;
kgrp[27].pos = 383662; kgrp[27].end = 393372; kgrp[27].loop = 2811;
kgrp[28].pos = 383662; kgrp[28].end = 393372; kgrp[28].loop = 2811; //ghost
kgrp[29].pos = 393373; kgrp[29].end = 406045; kgrp[29].loop = 4522;
kgrp[30].pos = 406046; kgrp[30].end = 414486; kgrp[30].loop = 2306;
kgrp[31].pos = 406046; kgrp[31].end = 414486; kgrp[31].loop = 2306; //ghost
kgrp[32].pos = 414487; kgrp[32].end = 422408; kgrp[32].loop = 2169;
//extra xfade looping...
for(int32_t k=0; k<28; k++)
{
int32_t p0 = kgrp[k].end;
int32_t p1 = kgrp[k].end - kgrp[k].loop;
float xf = 1.0f;
float dxf = -0.02f;
while(xf > 0.0f)
{
waves[p0] = (short)((1.0f - xf) * (float)waves[p0] + xf * (float)waves[p1]);
p0--;
p1--;
xf += dxf;
}
}
//initialise...
for(int32_t v=0; v<NVOICES; v++)
{
voice[v].env = 0.0f;
voice[v].dec = 0.99f; //all notes off
}
notes[0] = EVENTS_DONE;
volume = 0.2f;
muff = 160.0f;
sustain = activevoices = 0;
tl = tr = lfo0 = dlfo = 0.0f;
lfo1 = 1.0f;
guiUpdate = 0;
update();
// suspend();
}
void mdaEPiano::update() //parameter change
{
float * param = programs[curProgram].param;
size = (int32_t)(12.0f * param[2] - 6.0f);
treb = 4.0f * param[3] * param[3] - 1.0f; //treble gain
if(param[3] > 0.5f) tfrq = 14000.0f; else tfrq = 5000.0f; //treble freq
tfrq = 1.0f - (float)exp(-iFs * tfrq);
rmod = lmod = param[4] + param[4] - 1.0f; //lfo depth
if(param[4] < 0.5f) rmod = -rmod;
dlfo = 6.283f * iFs * (float)exp(6.22f * param[5] - 2.61f); //lfo rate
velsens = 1.0f + param[6] + param[6];
if(param[6] < 0.25f) velsens -= 0.75f - 3.0f * param[6];
width = 0.03f * param[7];
poly = 1 + (int32_t)(31.9f * param[8]);
fine = param[9] - 0.5f;
random = 0.077f * param[10] * param[10];
stretch = 0.0f; //0.000434f * (param[11] - 0.5f); parameter re-used for overdrive!
overdrive = 1.8f * param[11];
}
void mdaEPiano::resume()
{
//Fs = getSampleRate();
Fs=SAMPLE_RATE;
iFs = 1.0f / Fs;
dlfo = 6.283f * iFs * (float)exp(6.22f * programs[curProgram].param[5] - 2.61f); //lfo rate
//DECLARE_VST_DEPRECATED (wantEvents) ();
}
mdaEPiano::~mdaEPiano () //destroy any buffers...
{
if(programs) delete [] programs;
}
void mdaEPiano::setProgram(int32_t program)
{
curProgram = program;
update();
}
void mdaEPiano::setParameter(int32_t index, float value)
{
programs[curProgram].param[index] = value;
update();
//if(editor) editor->postUpdate(); ///For GUI
guiUpdate = index + 0x100 + (guiUpdate & 0xFFFF00);
}
void mdaEPiano::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)
{
strcpy(programs[p].name, name);
programs[p].param[0] = p0; programs[p].param[1] = p1;
programs[p].param[2] = p2; programs[p].param[3] = p3;
programs[p].param[4] = p4; programs[p].param[5] = p5;
programs[p].param[6] = p6; programs[p].param[7] = p7;
programs[p].param[8] = p8; programs[p].param[9] = p9;
programs[p].param[10]= p10; programs[p].param[11] = p11;
}
float mdaEPiano::getParameter(int32_t index) { return programs[curProgram].param[index]; }
/*
void mdaEPiano::setProgramName(char *name) { strcpy(programs[curProgram].name, name); }
void mdaEPiano::getProgramName(char *name) { strcpy(name, programs[curProgram].name); }
void mdaEPiano::setBlockSize(int32_t blockSize) { AudioEffectX::setBlockSize(blockSize); }
bool mdaEPiano::getEffectName(char* name) { strcpy(name, "ePiano"); return true; }
bool mdaEPiano::getVendorString(char* text) { strcpy(text, "mda"); return true; }
bool mdaEPiano::getProductString(char* text) { strcpy(text, "mda ePiano"); return true; }
bool mdaEPiano::getOutputProperties(int32_t index, VstPinProperties* properties)
{
if(index<NOUTS)
{
if(index) sprintf(properties->label, "ePiano");
else sprintf(properties->label, "ePiano");
properties->flags = kVstPinIsActive;
if(index<2) properties->flags |= kVstPinIsStereo; //make channel 1+2 stereo
return true;
}
return false;
}
bool mdaEPiano::getProgramNameIndexed(int32_t category, int32_t index, char* text)
{
if ((unsigned int)index < NPROGS)
{
strcpy(text, programs[index].name);
return true;
}
return false;
}
bool mdaEPiano::copyProgram(int32_t destination)
{
if(destination<NPROGS)
{
programs[destination] = programs[curProgram];
return true;
}
return false;
}
int32_t mdaEPiano::canDo(char* text)
{
if(strcmp(text, "receiveVstEvents") == 0) return 1;
if(strcmp(text, "receiveVstMidiEvent") == 0) return 1;
return -1;
}
void mdaEPiano::getParameterName(int32_t index, char *label)
{
switch (index)
{
case 0: strcpy(label, "Envelope Decay"); break;
case 1: strcpy(label, "Envelope Release"); break;
case 2: strcpy(label, "Hardness"); break;
case 3: strcpy(label, "Treble Boost"); break;
case 4: strcpy(label, "Modulation"); break;
case 5: strcpy(label, "LFO Rate"); break;
case 6: strcpy(label, "Velocity Sense"); break;
case 7: strcpy(label, "Stereo Width"); break;
case 8: strcpy(label, "Polyphony"); break;
case 9: strcpy(label, "Fine Tuning"); break;
case 10: strcpy(label, "Random Tuning"); break;
default: strcpy(label, "Overdrive"); break;
}
}
void mdaEPiano::getParameterDisplay(int32_t index, char *text)
{
char string[16];
float * param = programs[curProgram].param;
switch(index)
{
case 2:
case 3:
case 9: sprintf(string, "%.0f", 100.0f * param[index] - 50.0f); break;
case 4: if(param[index] > 0.5f)
sprintf(string, "Trem %.0f", 200.0f * param[index] - 100.0f);
else
sprintf(string, "Pan %.0f", 100.0f - 200.0f * param[index]); break;
case 5: sprintf(string, "%.2f", (float)exp(6.22f * param[5] - 2.61f)); break; //LFO Hz
case 7: sprintf(string, "%.0f", 200.0f * param[index]); break;
case 8: sprintf(string, "%d", poly); break;
case 10: sprintf(string, "%.1f", 50.0f * param[index] * param[index]); break;
case 11: sprintf(string, "%.1f", 100.0f * param[index]); break;
default: sprintf(string, "%.0f", 100.0f * param[index]);
}
string[8] = 0;
strcpy(text, (char *)string);
}
void mdaEPiano::getParameterLabel(int32_t index, char *label)
{
switch(index)
{
case 5: strcpy(label, "Hz"); break;
case 8: strcpy(label, "voices"); break;
case 9:
case 10: strcpy(label, "cents"); break;
default: strcpy(label, "%");
}
}
void mdaEPiano::guiGetDisplay(int32_t index, char *label)
{
getParameterName(index, label);
strcat(label, " = ");
getParameterDisplay(index, label + strlen(label));
getParameterLabel(index, label + strlen(label));
}
*/
void mdaEPiano::process(int16_t **outputs_r, int16_t **outputs_l, int32_t sampleFrames)
{
int16_t* out_l = outputs_r[0];
int16_t* out_r = outputs_l[0];
int32_t event=0, frame=0, frames, v;
float x, l, r, od=overdrive;
int32_t i;
while(frame<sampleFrames)
{
frames = notes[event++];
if(frames>sampleFrames) frames = sampleFrames;
frames -= frame;
frame += frames;
while(--frames>=0)
{
VOICE *V = voice;
l = r = 0.0f;
for(v=0; v<activevoices; v++)
{
V->frac += V->delta; //integer-based linear interpolation
V->pos += V->frac >> 16;
V->frac &= 0xFFFF;
if(V->pos > V->end) V->pos -= V->loop;
i = waves[V->pos];
i = (i << 7) + (V->frac >> 9) * (waves[V->pos + 1] - i) + 0x40400000;
x = V->env * (*(float *)&i - 3.0f); //fast int->float
V->env = V->env * V->dec; //envelope
if(x>0.0f) { x -= od * x * x; if(x < -V->env) x = -V->env; } //+= 0.5f * x * x; } //overdrive
l += V->outl * x;
r += V->outr * x;
V++;
}
tl += tfrq * (l - tl); //treble boost
tr += tfrq * (r - tr);
r += treb * (r - tr);
l += treb * (l - tl);
lfo0 += dlfo * lfo1; //LFO for tremolo and autopan
lfo1 -= dlfo * lfo0;
l += l * lmod * lfo1;
r += r * rmod * lfo1; //worth making all these local variables?
*out_r++ += static_cast<int16_t>(l * 0x8000);
*out_l++ += static_cast<int16_t>(r * 0x8000);
}
if(frame<sampleFrames)
{
if(activevoices == 0 && programs[curProgram].param[4] > 0.5f)
{ lfo0 = -0.7071f; lfo1 = 0.7071f; } //reset LFO phase - good idea?
int32_t note = notes[event++];
int32_t vel = notes[event++];
noteOn(note, vel);
}
}
if(fabs(tl)<1.0e-10) tl = 0.0f; //anti-denormal
if(fabs(tr)<1.0e-10) tr = 0.0f;
for(v=0; v<activevoices; v++) if(voice[v].env < SILENCE) voice[v] = voice[--activevoices];
notes[0] = EVENTS_DONE; //mark events buffer as done
}
void mdaEPiano::processReplacing(float **inputs, float **outputs, int32_t sampleFrames)
{
float* out0 = outputs[0];
float* out1 = outputs[1];
int32_t event=0, frame=0, frames, v;
float x, l, r, od=overdrive;
int32_t i;
while(frame<sampleFrames)
{
frames = notes[event++];
if(frames>sampleFrames) frames = sampleFrames;
frames -= frame;
frame += frames;
while(--frames>=0)
{
VOICE *V = voice;
l = r = 0.0f;
for(v=0; v<activevoices; v++)
{
V->frac += V->delta; //integer-based linear interpolation
V->pos += V->frac >> 16;
V->frac &= 0xFFFF;
if(V->pos > V->end) V->pos -= V->loop;
//i = waves[V->pos];
//i = (i << 7) + (V->frac >> 9) * (waves[V->pos + 1] - i) + 0x40400000; //not working on intel mac !?!
//x = V->env * (*(float *)&i - 3.0f); //fast int->float
//x = V->env * (float)i / 32768.0f;
i = waves[V->pos] + ((V->frac * (waves[V->pos + 1] - waves[V->pos])) >> 16);
x = V->env * (float)i / 32768.0f;
V->env = V->env * V->dec; //envelope
if(x>0.0f) { x -= od * x * x; if(x < -V->env) x = -V->env; } //+= 0.5f * x * x; } //overdrive
l += V->outl * x;
r += V->outr * x;
V++;
}
tl += tfrq * (l - tl); //treble boost
tr += tfrq * (r - tr);
r += treb * (r - tr);
l += treb * (l - tl);
lfo0 += dlfo * lfo1; //LFO for tremolo and autopan
lfo1 -= dlfo * lfo0;
l += l * lmod * lfo1;
r += r * rmod * lfo1; //worth making all these local variables?
*out0++ = l;
*out1++ = r;
}
if(frame<sampleFrames)
{
if(activevoices == 0 && programs[curProgram].param[4] > 0.5f)
{ lfo0 = -0.7071f; lfo1 = 0.7071f; } //reset LFO phase - good idea?
int32_t note = notes[event++];
int32_t vel = notes[event++];
noteOn(note, vel);
}
}
if(fabs(tl)<1.0e-10) tl = 0.0f; //anti-denormal
if(fabs(tr)<1.0e-10) tr = 0.0f;
for(v=0; v<activevoices; v++) if(voice[v].env < SILENCE) voice[v] = voice[--activevoices];
notes[0] = EVENTS_DONE; //mark events buffer as done
}
void mdaEPiano::noteOn(int32_t note, int32_t velocity)
{
float * param = programs[curProgram].param;
float l=99.0f;
int32_t v, vl=0, k, s;
if(velocity > 0)
{
if(activevoices < poly) //add a note
{
vl = activevoices;
activevoices++;
voice[vl].f0 = voice[vl].f1 = 0.0f;
}
else //steal a note
{
for(v=0; v<poly; v++) //find quietest voice
{
if(voice[v].env < l) { l = voice[v].env; vl = v; }
}
}
k = (note - 60) * (note - 60);
l = fine + random * ((float)(k % 13) - 6.5f); //random & fine tune
if(note > 60) l += stretch * (float)k; //stretch
s = size;
//if(velocity > 40) s += (int32_t)(sizevel * (float)(velocity - 40)); - no velocity to hardness in ePiano
k = 0;
while(note > (kgrp[k].high + s)) k += 3; //find keygroup
l += (float)(note - kgrp[k].root); //pitch
l = 32000.0f * iFs * (float)exp(0.05776226505 * l);
voice[vl].delta = (int32_t)(65536.0f * l);
voice[vl].frac = 0;
if(velocity > 48) k++; //mid velocity sample
if(velocity > 80) k++; //high velocity sample
voice[vl].pos = kgrp[k].pos;
voice[vl].end = kgrp[k].end - 1;
voice[vl].loop = kgrp[k].loop;
voice[vl].env = (3.0f + 2.0f * velsens) * (float)pow(0.0078f * velocity, velsens); //velocity
if(note > 60) voice[vl].env *= (float)exp(0.01f * (float)(60 - note)); //new! high notes quieter
l = 50.0f + param[4] * param[4] * muff + muffvel * (float)(velocity - 64); //muffle
if(l < (55.0f + 0.4f * (float)note)) l = 55.0f + 0.4f * (float)note;
if(l > 210.0f) l = 210.0f;
voice[vl].ff = l * l * iFs;
voice[vl].note = note; //note->pan
if(note < 12) note = 12;
if(note > 108) note = 108;
l = volume;
voice[vl].outr = l + l * width * (float)(note - 60);
voice[vl].outl = l + l - voice[vl].outr;
if(note < 44) note = 44; //limit max decay length
voice[vl].dec = (float)exp(-iFs * exp(-1.0 + 0.03 * (double)note - 2.0f * param[0]));
}
else //note off
{
for(v=0; v<NVOICES; v++) if(voice[v].note==note) //any voices playing that note?
{
if(sustain==0)
{
voice[v].dec = (float)exp(-iFs * exp(6.0 + 0.01 * (double)note - 5.0 * param[1]));
}
else voice[v].note = SUSTAIN;
}
}
}
int32_t mdaEPiano::processEvents()
{
/*
float * param = programs[curProgram].param;
int32_t npos=0;
for (int32_t i=0; i<ev->numEvents; i++)
{
if((ev->events[i])->type != kVstMidiType) continue;
VstMidiEvent* event = (VstMidiEvent*)ev->events[i];
char* midiData = event->midiData;
switch(midiData[0] & 0xf0) //status byte (all channels)
{
case 0x80: //note off
notes[npos++] = event->deltaFrames; //delta
notes[npos++] = midiData[1] & 0x7F; //note
notes[npos++] = 0; //vel
break;
case 0x90: //note on
notes[npos++] = event->deltaFrames; //delta
notes[npos++] = midiData[1] & 0x7F; //note
notes[npos++] = midiData[2] & 0x7F; //vel
break;
case 0xB0: //controller
switch(midiData[1])
{
case 0x01: //mod wheel
modwhl = 0.0078f * (float)(midiData[2]);
if(modwhl > 0.05f) //over-ride pan/trem depth
{
rmod = lmod = modwhl; //lfo depth
if(param[4] < 0.5f) rmod = -rmod;
}
break;
case 0x07: //volume
volume = 0.00002f * (float)(midiData[2] * midiData[2]);
break;
case 0x40: //sustain pedal
case 0x42: //sustenuto pedal
sustain = midiData[2] & 0x40;
if(sustain==0)
{
notes[npos++] = event->deltaFrames;
notes[npos++] = SUSTAIN; //end all sustained notes
notes[npos++] = 0;
}
break;
default: //all notes off
if(midiData[1]>0x7A)
{
for(int32_t v=0; v<NVOICES; v++) voice[v].dec=0.99f;
sustain = 0;
muff = 160.0f;
}
break;
}
break;
case 0xC0: //program change
if(midiData[1]<NPROGS) setProgram(midiData[1]);
break;
default: break;
}
if(npos>EVENTBUFFER) npos -= 3; //discard events if buffer full!!
event++; //?
}
notes[npos] = EVENTS_DONE;
*/
return 1;
}