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Make Elements polyphonic.

tags/v1.4.0
Andrew Belt 1 year ago
parent
commit
2be0375a13
2 changed files with 118 additions and 72 deletions
  1. +4
    -0
      CHANGELOG.md
  2. +114
    -72
      src/Elements.cpp

+ 4
- 0
CHANGELOG.md View File

@@ -1,3 +1,7 @@
### 1.4.0 (in development)
- Add "Ominous voice" (easter egg) mode to Elements.
- Make Elements polyphonic.

### 1.3.1 (2020-07-14)
- Rewrite and re-panel Branches.
- Make Branches polyphonic.


+ 114
- 72
src/Elements.cpp View File

@@ -70,13 +70,13 @@ struct Elements : Module {
NUM_LIGHTS
};

dsp::SampleRateConverter<2> inputSrc;
dsp::SampleRateConverter<2> outputSrc;
dsp::DoubleRingBuffer<dsp::Frame<2>, 256> inputBuffer;
dsp::DoubleRingBuffer<dsp::Frame<2>, 256> outputBuffer;
dsp::SampleRateConverter<16 * 2> inputSrc;
dsp::SampleRateConverter<16 * 2> outputSrc;
dsp::DoubleRingBuffer<dsp::Frame<16 * 2>, 256> inputBuffer;
dsp::DoubleRingBuffer<dsp::Frame<16 * 2>, 256> outputBuffer;

uint16_t reverb_buffer[32768] = {};
elements::Part* part;
uint16_t reverb_buffers[16][32768] = {};
elements::Part* parts[16];

Elements() {
config(NUM_PARAMS, NUM_INPUTS, NUM_OUTPUTS, NUM_LIGHTS);
@@ -109,107 +109,144 @@ struct Elements : Module {
configParam(SPACE_MOD_PARAM, -2.0, 2.0, 0.0, "Reverb space attenuverter");
configParam(PLAY_PARAM, 0.0, 1.0, 0.0, "Play");

part = new elements::Part();
// In the Mutable Instruments code, Part doesn't initialize itself, so zero it here.
memset(part, 0, sizeof(*part));
part->Init(reverb_buffer);
// Just some random numbers
uint32_t seed[3] = {1, 2, 3};
part->Seed(seed, 3);
for (int c = 0; c < 16; c++) {
parts[c] = new elements::Part();
// In the Mutable Instruments code, Part doesn't initialize itself, so zero it here.
std::memset(parts[c], 0, sizeof(*parts[c]));
parts[c]->Init(reverb_buffers[c]);
// Just some random numbers
uint32_t seed[3] = {1, 2, 3};
parts[c]->Seed(seed, 3);
}
}

~Elements() {
delete part;
for (int c = 0; c < 16; c++) {
delete parts[c];
}
}

void onReset() override {
setModel(0);
}

void process(const ProcessArgs& args) override {
int channels = std::max(inputs[NOTE_INPUT].getChannels(), 1);

// Get input
if (!inputBuffer.full()) {
dsp::Frame<2> inputFrame;
inputFrame.samples[0] = inputs[BLOW_INPUT].getVoltage() / 5.0;
inputFrame.samples[1] = inputs[STRIKE_INPUT].getVoltage() / 5.0;
dsp::Frame<16 * 2> inputFrame = {};
for (int c = 0; c < channels; c++) {
inputFrame.samples[c * 2 + 0] = inputs[BLOW_INPUT].getPolyVoltage(c) / 5.0;
inputFrame.samples[c * 2 + 1] = inputs[STRIKE_INPUT].getPolyVoltage(c) / 5.0;
}
inputBuffer.push(inputFrame);
}

// Render frames
// Generate output if output buffer is empty
if (outputBuffer.empty()) {
float blow[16] = {};
float strike[16] = {};
float main[16];
float aux[16];
// blow[channel][bufferIndex]
float blow[16][16] = {};
float strike[16][16] = {};

// Convert input buffer
{
inputSrc.setRates(args.sampleRate, 32000);
dsp::Frame<2> inputFrames[16];
inputSrc.setChannels(channels * 2);
int inLen = inputBuffer.size();
int outLen = 16;
dsp::Frame<16 * 2> inputFrames[outLen];
inputSrc.process(inputBuffer.startData(), &inLen, inputFrames, &outLen);
inputBuffer.startIncr(inLen);

for (int i = 0; i < outLen; i++) {
blow[i] = inputFrames[i].samples[0];
strike[i] = inputFrames[i].samples[1];
for (int c = 0; c < channels; c++) {
for (int i = 0; i < outLen; i++) {
blow[c][i] = inputFrames[i].samples[c * 2 + 0];
strike[c][i] = inputFrames[i].samples[c * 2 + 1];
}
}
}

// Set patch from parameters
elements::Patch* p = part->mutable_patch();
p->exciter_envelope_shape = params[CONTOUR_PARAM].getValue();
p->exciter_bow_level = params[BOW_PARAM].getValue();
p->exciter_blow_level = params[BLOW_PARAM].getValue();
p->exciter_strike_level = params[STRIKE_PARAM].getValue();

#define BIND(_p, _m, _i) clamp(params[_p].getValue() + 3.3f*dsp::quadraticBipolar(params[_m].getValue())*inputs[_i].getVoltage()/5.0f, 0.0f, 0.9995f)

p->exciter_bow_timbre = BIND(BOW_TIMBRE_PARAM, BOW_TIMBRE_MOD_PARAM, BOW_TIMBRE_MOD_INPUT);
p->exciter_blow_meta = BIND(FLOW_PARAM, FLOW_MOD_PARAM, FLOW_MOD_INPUT);
p->exciter_blow_timbre = BIND(BLOW_TIMBRE_PARAM, BLOW_TIMBRE_MOD_PARAM, BLOW_TIMBRE_MOD_INPUT);
p->exciter_strike_meta = BIND(MALLET_PARAM, MALLET_MOD_PARAM, MALLET_MOD_INPUT);
p->exciter_strike_timbre = BIND(STRIKE_TIMBRE_PARAM, STRIKE_TIMBRE_MOD_PARAM, STRIKE_TIMBRE_MOD_INPUT);
p->resonator_geometry = BIND(GEOMETRY_PARAM, GEOMETRY_MOD_PARAM, GEOMETRY_MOD_INPUT);
p->resonator_brightness = BIND(BRIGHTNESS_PARAM, BRIGHTNESS_MOD_PARAM, BRIGHTNESS_MOD_INPUT);
p->resonator_damping = BIND(DAMPING_PARAM, DAMPING_MOD_PARAM, DAMPING_MOD_INPUT);
p->resonator_position = BIND(POSITION_PARAM, POSITION_MOD_PARAM, POSITION_MOD_INPUT);
p->space = clamp(params[SPACE_PARAM].getValue() + params[SPACE_MOD_PARAM].getValue() * inputs[SPACE_MOD_INPUT].getVoltage() / 5.0f, 0.0f, 2.0f);

// Get performance inputs
elements::PerformanceState performance;
performance.note = 12.0 * inputs[NOTE_INPUT].getVoltage() + roundf(params[COARSE_PARAM].getValue()) + params[FINE_PARAM].getValue() + 69.0;
performance.modulation = 3.3 * dsp::quarticBipolar(params[FM_PARAM].getValue()) * 49.5 * inputs[FM_INPUT].getVoltage() / 5.0;
performance.gate = params[PLAY_PARAM].getValue() >= 1.0 || inputs[GATE_INPUT].getVoltage() >= 1.0;
performance.strength = clamp(1.0 - inputs[STRENGTH_INPUT].getVoltage() / 5.0f, 0.0f, 1.0f);

// Generate audio
part->Process(performance, blow, strike, main, aux, 16);
// Process channels
// main[channel][bufferIndex]
float main[16][16];
float aux[16][16];
float gateLight = 0.f;
float exciterLight = 0.f;
float resonatorLight = 0.f;

for (int c = 0; c < channels; c++) {
// Set patch from parameters
elements::Patch* p = parts[c]->mutable_patch();
p->exciter_envelope_shape = params[CONTOUR_PARAM].getValue();
p->exciter_bow_level = params[BOW_PARAM].getValue();
p->exciter_blow_level = params[BLOW_PARAM].getValue();
p->exciter_strike_level = params[STRIKE_PARAM].getValue();

#define BIND(_p, _m, _i) clamp(params[_p].getValue() + 3.3f * dsp::quadraticBipolar(params[_m].getValue()) * inputs[_i].getPolyVoltage(c) / 5.f, 0.f, 0.9995f)

p->exciter_bow_timbre = BIND(BOW_TIMBRE_PARAM, BOW_TIMBRE_MOD_PARAM, BOW_TIMBRE_MOD_INPUT);
p->exciter_blow_meta = BIND(FLOW_PARAM, FLOW_MOD_PARAM, FLOW_MOD_INPUT);
p->exciter_blow_timbre = BIND(BLOW_TIMBRE_PARAM, BLOW_TIMBRE_MOD_PARAM, BLOW_TIMBRE_MOD_INPUT);
p->exciter_strike_meta = BIND(MALLET_PARAM, MALLET_MOD_PARAM, MALLET_MOD_INPUT);
p->exciter_strike_timbre = BIND(STRIKE_TIMBRE_PARAM, STRIKE_TIMBRE_MOD_PARAM, STRIKE_TIMBRE_MOD_INPUT);
p->resonator_geometry = BIND(GEOMETRY_PARAM, GEOMETRY_MOD_PARAM, GEOMETRY_MOD_INPUT);
p->resonator_brightness = BIND(BRIGHTNESS_PARAM, BRIGHTNESS_MOD_PARAM, BRIGHTNESS_MOD_INPUT);
p->resonator_damping = BIND(DAMPING_PARAM, DAMPING_MOD_PARAM, DAMPING_MOD_INPUT);
p->resonator_position = BIND(POSITION_PARAM, POSITION_MOD_PARAM, POSITION_MOD_INPUT);
p->space = clamp(params[SPACE_PARAM].getValue() + params[SPACE_MOD_PARAM].getValue() * inputs[SPACE_MOD_INPUT].getPolyVoltage(c) / 5.f, 0.f, 2.f);

// Get performance inputs
elements::PerformanceState performance;
performance.note = 12.f * inputs[NOTE_INPUT].getVoltage(c) + std::round(params[COARSE_PARAM].getValue()) + params[FINE_PARAM].getValue() + 69.f;
performance.modulation = 3.3f * dsp::quarticBipolar(params[FM_PARAM].getValue()) * 49.5f * inputs[FM_INPUT].getPolyVoltage(c) / 5.f;
performance.gate = params[PLAY_PARAM].getValue() >= 1.f || inputs[GATE_INPUT].getPolyVoltage(c) >= 1.f;
performance.strength = clamp(1.f - inputs[STRENGTH_INPUT].getPolyVoltage(c) / 5.f, 0.f, 1.f);

// Generate audio
parts[c]->Process(performance, blow[c], strike[c], main[c], aux[c], 16);

// Set lights based on first poly channel
gateLight = std::max(gateLight, performance.gate ? 0.75f : 0.f);
exciterLight = std::max(exciterLight, parts[c]->exciter_level());
resonatorLight = std::max(resonatorLight, parts[c]->resonator_level());
}

// Set lights
lights[GATE_LIGHT].setBrightness(gateLight);
lights[EXCITER_LIGHT].setBrightness(exciterLight);
lights[RESONATOR_LIGHT].setBrightness(resonatorLight);

// Convert output buffer
{
dsp::Frame<2> outputFrames[16];
for (int i = 0; i < 16; i++) {
outputFrames[i].samples[0] = main[i];
outputFrames[i].samples[1] = aux[i];
dsp::Frame<16 * 2> outputFrames[16];
for (int c = 0; c < channels; c++) {
for (int i = 0; i < 16; i++) {
outputFrames[i].samples[c * 2 + 0] = main[c][i];
outputFrames[i].samples[c * 2 + 1] = aux[c][i];
}
}

outputSrc.setRates(32000, args.sampleRate);
outputSrc.setChannels(channels * 2);
int inLen = 16;
int outLen = outputBuffer.capacity();
outputSrc.process(outputFrames, &inLen, outputBuffer.endData(), &outLen);
outputBuffer.endIncr(outLen);
}

// Set lights
lights[GATE_LIGHT].setBrightness(performance.gate ? 0.75 : 0.0);
lights[EXCITER_LIGHT].setBrightness(part->exciter_level());
lights[RESONATOR_LIGHT].setBrightness(part->resonator_level());
}

// Set output
if (!outputBuffer.empty()) {
dsp::Frame<2> outputFrame = outputBuffer.shift();
outputs[AUX_OUTPUT].setVoltage(5.0 * outputFrame.samples[0]);
outputs[MAIN_OUTPUT].setVoltage(5.0 * outputFrame.samples[1]);
dsp::Frame<16 * 2> outputFrame = outputBuffer.shift();
for (int c = 0; c < channels; c++) {
outputs[AUX_OUTPUT].setVoltage(5.f * outputFrame.samples[c * 2 + 0], c);
outputs[MAIN_OUTPUT].setVoltage(5.f * outputFrame.samples[c * 2 + 1], c);
}
}

outputs[AUX_OUTPUT].setChannels(channels);
outputs[MAIN_OUTPUT].setChannels(channels);
}

json_t* dataToJson() override {
@@ -226,9 +263,10 @@ struct Elements : Module {
}

int getModel() {
if (part->easter_egg())
// Use the first channel's Part as the reference model
if (parts[0]->easter_egg())
return -1;
return (int) part->resonator_model();
return (int) parts[0]->resonator_model();
}

/** Sets the resonator model.
@@ -236,11 +274,15 @@ struct Elements : Module {
*/
void setModel(int model) {
if (model < 0) {
part->set_easter_egg(true);
for (int c = 0; c < 16; c++) {
parts[c]->set_easter_egg(true);
}
}
else {
part->set_easter_egg(false);
part->set_resonator_model((elements::ResonatorModel) model);
for (int c = 0; c < 16; c++) {
parts[c]->set_easter_egg(false);
parts[c]->set_resonator_model((elements::ResonatorModel) model);
}
}
}
};


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