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/*
* ZamPiano physically modelled piano synth
* 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.
*/
#include "ZamPianoPlugin.hpp"
START_NAMESPACE_DISTRHO
// -----------------------------------------------------------------------
ZamPianoPlugin::ZamPianoPlugin()
: Plugin(paramCount, 1, 0) // 1 program, 0 states
{
// set default values
loadProgram(0);
}
ZamPianoPlugin::~ZamPianoPlugin()
{
int i;
for (i = 0; i < 88; i++) {
free(intermed[i][0]);
free(intermed[i][1]);
}
}
// -----------------------------------------------------------------------
// Init
void ZamPianoPlugin::initParameter(uint32_t index, Parameter& parameter)
{
switch (index)
{
case paramFreq: // fentry0
parameter.hints = kParameterIsAutomable;
parameter.name = "Tone Frequency";
parameter.symbol = "freq";
parameter.unit = "Hz";
parameter.ranges.def = 440.0f;
parameter.ranges.min = 20.0f;
parameter.ranges.max = 20000.0f;
break;
case paramGain: // fentry1
parameter.hints = kParameterIsAutomable;
parameter.name = "Gain";
parameter.symbol = "gain";
parameter.unit = "";
parameter.ranges.def = 1.0f;
parameter.ranges.min = 0.0f;
parameter.ranges.max = 1.0f;
break;
case paramGate: // fbutton0
parameter.hints = kParameterIsAutomable | kParameterIsBoolean;
parameter.name = "Gate";
parameter.symbol = "gate";
parameter.unit = "";
parameter.ranges.def = 1.0f;
parameter.ranges.min = 0.0f;
parameter.ranges.max = 1.0f;
break;
case paramBright: // fslider0
parameter.hints = kParameterIsAutomable;
parameter.name = "Brightness";
parameter.symbol = "brightness";
parameter.unit = "";
parameter.ranges.def = 0.5f;
parameter.ranges.min = 0.0f;
parameter.ranges.max = 1.0f;
break;
case paramDetuning: // fslider3
parameter.hints = kParameterIsAutomable;
parameter.name = "Detuning";
parameter.symbol = "detuning";
parameter.unit = "";
parameter.ranges.def = 0.1f;
parameter.ranges.min = 0.0f;
parameter.ranges.max = 1.0f;
break;
case paramHammerHard: // fslider1
parameter.hints = kParameterIsAutomable;
parameter.name = "Hammer Hardness";
parameter.symbol = "hammerhard";
parameter.unit = "";
parameter.ranges.def = 0.5f;
parameter.ranges.min = 0.0f;
parameter.ranges.max = 1.0f;
break;
case paramStiffness: // fslider2
parameter.hints = kParameterIsAutomable;
parameter.name = "Stiffness";
parameter.symbol = "stiffness";
parameter.unit = "";
parameter.ranges.def = 0.28f;
parameter.ranges.min = 0.0f;
parameter.ranges.max = 1.0f;
break;
case paramReverbGain: // fslider4
parameter.hints = kParameterIsAutomable;
parameter.name = "Reverb Gain";
parameter.symbol = "reverbgain";
parameter.unit = "";
parameter.ranges.def = 0.137f;
parameter.ranges.min = 0.0f;
parameter.ranges.max = 1.0f;
break;
case paramReverbRoom: // fslider6
parameter.hints = kParameterIsAutomable;
parameter.name = "Reverb Room Size";
parameter.symbol = "reverbroom";
parameter.unit = "";
parameter.ranges.def = 0.72f;
parameter.ranges.min = 0.0f;
parameter.ranges.max = 2.0f;
break;
case paramPanAngle: // fslider5
parameter.hints = kParameterIsAutomable;
parameter.name = "Pan Angle";
parameter.symbol = "panangle";
parameter.unit = "";
parameter.ranges.def = 0.6f;
parameter.ranges.min = 0.0f;
parameter.ranges.max = 1.0f;
break;
case paramSpatialWidth: // fslider7
parameter.hints = kParameterIsAutomable;
parameter.name = "Spatial Width";
parameter.symbol = "spatialwidth";
parameter.unit = "";
parameter.ranges.def = 0.5f;
parameter.ranges.min = 0.0f;
parameter.ranges.max = 1.0f;
break;
}
}
void ZamPianoPlugin::initProgramName(uint32_t index, String& programName)
{
if (index != 0)
return;
programName = "Default";
}
// -----------------------------------------------------------------------
// Internal data
float ZamPianoPlugin::getParameterValue(uint32_t index) const
{
switch (index)
{
case paramFreq: // fentry0
return pfreq;
break;
case paramGain: // fentry1
return pgain;
break;
case paramGate: // fbutton0
return pgate;
break;
case paramBright: // fslider0
return pbright;
break;
case paramDetuning: // fslider3
return pdetune;
break;
case paramHammerHard: // fslider1
return phammer;
break;
case paramStiffness: // fslider2
return pstiff;
break;
case paramReverbGain: // fslider4
return prevgain;
break;
case paramReverbRoom: // fslider6
return prevroom;
break;
case paramPanAngle: // fslider5
return ppanangle;
break;
case paramSpatialWidth: // fslider7
return pspatialwidth;
break;
default:
return 0;
break;
}
}
void ZamPianoPlugin::setParameterValue(uint32_t index, float value)
{
switch (index)
{
case paramFreq: // fentry0
pfreq = value;
break;
case paramGain: // fentry1
pgain = value;
break;
case paramGate: // fbutton0
pgate = value;
break;
case paramBright: // fslider0
pbright = value;
break;
case paramDetuning: // fslider3
pdetune = value;
break;
case paramHammerHard: // fslider1
phammer = value;
break;
case paramStiffness: // fslider2
pstiff = value;
break;
case paramReverbGain: // fslider4
prevgain = value;
break;
case paramReverbRoom: // fslider6
prevroom = value;
break;
case paramPanAngle: // fslider5
ppanangle = value;
break;
case paramSpatialWidth: // fslider7
pspatialwidth = value;
break;
}
}
void ZamPianoPlugin::loadProgram(uint32_t index)
{
if (index != 0)
return;
/* Default parameter values */
/* reset filter values */
activate();
}
/*
void ZamPianoPlugin::setState(const char*, const char*)
{
}
void ZamPianoPlugin::initStateKey(unsigned int, String&)
{
}
*/
// -----------------------------------------------------------------------
// Process
void ZamPianoPlugin::activate()
{
int i;
for (i = 0; i < 88; i++) {
note[i].state = SILENT;
note[i].vel = 0.;
note[i].gatestate = 1;
N[i].init();
}
pbright = 0.5f;
pdetune = 0.1f;
phammer = 0.5f;
pstiff = 0.28f;
prevgain = 0.137f;
prevroom = 0.72f;
ppanangle = 0.6f;
pspatialwidth = 0.5f;
for (i = 0; i < 88; i++) {
intermed[i][0] = (float*)malloc(4096*sizeof(float));
intermed[i][1] = (float*)malloc(4096*sizeof(float));
}
}
void ZamPianoPlugin::run(const float** inputs, float** outputs, uint32_t frames,
const MidiEvent* midievent, uint32_t midicount)
{
uint32_t i, j;
bool signal;
int gate = 1;
for (i = 0; i < 88; i++) {
N[i].pbright = pbright;
N[i].phammer = phammer;
N[i].pstiff = pstiff;
N[i].pdetune = pdetune;
N[i].prevgain = prevgain;
N[i].prevroom = prevroom;
N[i].ppanangle = ppanangle;
N[i].pspatialwidth = pspatialwidth;
for (j = 0; j < frames; j++) {
intermed[i][0][j] = 0.f;
intermed[i][1][j] = 0.f;
}
}
for (i = 0; i < midicount; i++) {
int type = midievent[i].data[0] & 0xF0;
int chan = midievent[i].data[0] & 0x0F;
int n = midievent[i].data[1];
int v = midievent[i].data[2];
if (type == 0x90 && chan == 0x0) {
// NOTE ON
note[n].state = STRIKE;
note[n].vel = v / 127.f;
gate = 0;
}
else if (type == 0x80 && chan == 0x0) {
// NOTE OFF
gate = 1;
if (note[n].state != SILENT) {
note[n].state = RELEASE;
}
}
}
for (i = 0; i < frames; i++) {
outputs[0][i] = 0.f;
outputs[1][i] = 0.f;
}
signal = false;
int k;
for (k = 0; k < 88; k++) {
if (note[k].state == SILENT) {
N[k].pgate = 1.;
continue;
}
signal = true;
if (note[k].state == STRIKE) {
//printf("STRIKE: %d\n", k);
N[k].pfreq = 220. * powf(2., (k-69)/12.);
N[k].pgain = note[k].vel;
N[k].pgate = 0.;
N[k].compute(1, inputs, intermed[k]);
N[k].pgate = 1.;
note[k].state++;
} else if (note[k].state < RELEASE) {
//printf("SUSTAIN: %d %d\n", k, note[k].state);
note[k].state++;
} else if (note[k].state < DECAY) {
//printf("RELEASE: %d %d\n", k, note[k].state);
//N[k].pfreq = 440. * powf(2., (k-69)/12.);
N[k].pgain = 0.;
//N[k].pgate = 0.;
//N[k].compute(1, inputs, intermed[k]);
N[k].pgate = 1.;
note[k].state++;
} else if (note[k].state < SILENT) {
//printf("DECAY: %d %d\n", k, note[k].state);
note[k].state++;
}
N[k].compute(frames, inputs, intermed[k]);
}
for (i = 0; i < 88; i++) {
for (j = 0; j < frames; j++) {
outputs[0][j] += intermed[i][0][j] * 0.1;
outputs[1][j] += intermed[i][1][j] * 0.1;
}
}
for (i = 0; i < frames; i++) {
if (signal) {
sanitize_denormal(outputs[0][i]);
sanitize_denormal(outputs[1][i]);
} else {
outputs[0][i] = 0.f;
outputs[1][i] = 0.f;
}
}
}
// -----------------------------------------------------------------------
Plugin* createPlugin()
{
return new ZamPianoPlugin();
}
// -----------------------------------------------------------------------
END_NAMESPACE_DISTRHO
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