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Befaco
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Added initial prototype of Burst

pull/46/head
hemmer 1 year ago
parent
920d9bbbb6
commit
2034877161
8 changed files with 1609 additions and 1 deletions
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  1. +6
    -0
      CHANGELOG.md
  2. +14
    -1
      plugin.json
  3. +76
    -0
      res/components/Davies1900hWhiteEndless.svg
  4. +24
    -0
      res/components/Davies1900hWhiteEndless_bg.svg
  5. +1131
    -0
      res/panels/Burst.svg
  6. +349
    -0
      src/Burst.cpp
  7. +1
    -0
      src/plugin.cpp
  8. +8
    -0
      src/plugin.hpp

+ 6
- 0
CHANGELOG.md View File

@@ -1,5 +1,11 @@
# Change Log

## v2.5.0
* Burst
* Initial release
* PonyVCO
* Now polyphonic

## v2.4.0
* MotionMTR
* Initial release


+ 14
- 1
plugin.json View File

@@ -1,6 +1,6 @@
{
"slug": "Befaco",
"version": "2.4.0",
"version": "2.5.0",
"license": "GPL-3.0-or-later",
"name": "Befaco",
"brand": "Befaco",
@@ -267,6 +267,7 @@
"Hardware clone",
"Low-frequency oscillator",
"Oscillator",
"Polyphonic",
"Waveshaper"
]
},
@@ -282,6 +283,18 @@
"Mixer",
"Visual"
]
},
{
"slug": "Burst",
"name": "Burst",
"description": "Trigger processor and generator, designed to add an organic chain of events",
"manualUrl": "https://www.befaco.org/burst-2/",
"modularGridUrl": "https://www.modulargrid.net/e/befaco-burst-",
"tags": [
"Clock generator",
"Clock modulator",
"Hardware clone"
]
}
]
}

+ 76
- 0
res/components/Davies1900hWhiteEndless.svg View File

@@ -0,0 +1,76 @@
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src/Burst.cpp View File

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#include "plugin.hpp"

#define MAX_REPETITIONS 32 /// max number of repetitions
#define TRIGGER_TIME 0.001

// a tempo/clock calculator that responds to pings - this sets the base tempo, multiplication/division of
// this tempo occurs in the BurstEngine
struct PingableClock {

dsp::Timer timer; // time the gap between pings
dsp::PulseGenerator clockTimer; // counts down from tempo length to zero
dsp::BooleanTrigger clockExpiry; // checks for when the clock timer runs out

float pingDuration = 0.5f; // used for calculating and updating tempo (default 2Hz / 120 bpm)
float tempo = 0.5f; // actual current tempo of clock

PingableClock() {
clockTimer.trigger(tempo);
}

void process(bool pingRecieved, float sampleTime) {
timer.process(sampleTime);

bool clockRestarted = false;

if (pingRecieved) {

bool tempoShouldBeUpdated = true;
float duration = timer.getTime();

// if the ping was unusually different to last time
bool outlier = duration > (pingDuration * 2) || duration < (pingDuration / 2);
// if there is a previous estimate of tempo, but it's an outlier
if ((pingDuration && outlier)) {
// don't calculate tempo from this; prime so future pings will update
tempoShouldBeUpdated = false;
pingDuration = 0;
}
else {
pingDuration = duration;
}
timer.reset();

if (tempoShouldBeUpdated) {
// if the tempo should be updated, do so
tempo = pingDuration;
clockRestarted = true;
}
}

// we restart the clock if a) a new valid ping arrived OR b) the current clock expired
clockRestarted = clockExpiry.process(!clockTimer.process(sampleTime)) || clockRestarted;
if (clockRestarted) {
clockTimer.reset();
clockTimer.trigger(tempo);
}
}

bool isTempoOutHigh() {
// give a 1ms pulse as tempo out
return clockTimer.remaining > tempo - TRIGGER_TIME;
}
};

// engine that generates a burst when triggered
struct BurstEngine {

dsp::PulseGenerator eocOutput; // for generating EOC trigger
dsp::PulseGenerator burstOutput; // for generating triggers for each occurance of the burst
dsp::Timer burstTimer; // for timing how far through the current burst we are

float timings[MAX_REPETITIONS + 1] = {}; // store timings (calculated once on burst trigger)

int triggersOccurred = 0; // how many triggers have been
int triggersRequested = 0; // how many bursts have been requested (fixed over course of burst)
bool active = true; // is there a burst active
bool wasInhibited = false; // was this burst inhibited (i.e. just the first trigger sent)

std::tuple<float, float, bool> process(float sampleTime) {

if (active) {
burstTimer.process(sampleTime);
}

bool eocTriggered = false;
if (burstTimer.time > timings[triggersOccurred]) {
if (triggersOccurred < triggersRequested) {
burstOutput.reset();
burstOutput.trigger(TRIGGER_TIME);
}
else if (triggersOccurred == triggersRequested) {
eocOutput.reset();
eocOutput.trigger(TRIGGER_TIME);
active = false;
eocTriggered = true;
}
triggersOccurred++;
}

const float burstOut = burstOutput.process(sampleTime);
// NOTE: we don't get EOC if the burst was inhibited
const float eocOut = eocOutput.process(sampleTime) * !wasInhibited;
return std::make_tuple(burstOut, eocOut, eocTriggered);
}

void trigger(int numBursts, int multDiv, float baseTimeWindow, float distribution, bool inhibitBurst, bool includeOriginalTrigger) {

active = true;
wasInhibited = inhibitBurst;

// the window in which the burst fits is a multiple (or division) of the base tempo
int divisions = multDiv + (multDiv > 0 ? 1 : multDiv < 0 ? -1 : 0); // skip 2/-2
float actualTimeWindow = baseTimeWindow;
if (divisions > 0) {
actualTimeWindow = baseTimeWindow * divisions;
}
else if (divisions < 0) {
actualTimeWindow = baseTimeWindow / (-divisions);
}

// calculate the times at which triggers should fire, will be skewed by distribution
const float power = 1 + std::abs(distribution) * 2;
for (int i = 0; i <= numBursts; ++i) {
if (distribution >= 0) {
timings[i] = actualTimeWindow * std::pow((float)i / numBursts, power);
}
else {
timings[i] = actualTimeWindow * std::pow((float)i / numBursts, 1 / power);
}
}

triggersOccurred = includeOriginalTrigger ? 0 : 1;
triggersRequested = inhibitBurst ? 1 : numBursts;
burstTimer.reset();
}
};

struct Burst : Module {
enum ParamIds {
CYCLE_PARAM,
QUANTITY_PARAM,
TRIGGER_PARAM,
QUANTITY_CV_PARAM,
DISTRIBUTION_PARAM,
TIME_PARAM,
PROBABILITY_PARAM,
NUM_PARAMS
};
enum InputIds {
QUANTITY_INPUT,
DISTRIBUTION_INPUT,
PING_INPUT,
TIME_INPUT,
PROBABILITY_INPUT,
TRIGGER_INPUT,
NUM_INPUTS
};
enum OutputIds {
TEMPO_OUTPUT,
EOC_OUTPUT,
OUT_OUTPUT,
NUM_OUTPUTS
};
enum LightIds {
ENUMS(QUANTITY_LIGHTS, 16),
TEMPO_LIGHT,
EOC_LIGHT,
OUT_LIGHT,
NUM_LIGHTS
};


dsp::SchmittTrigger pingTrigger; // for detecting Ping in
dsp::SchmittTrigger triggTrigger; // for detecting Trigg in
dsp::BooleanTrigger buttonTrigger; // for detecting when the trigger button is pressed
dsp::ClockDivider ledUpdate; // for only updating LEDs every N samples
const int ledUpdateRate = 16; // LEDs updated every N = 16 samples

PingableClock pingableClock;
BurstEngine burstEngine;
bool includeOriginalTrigger = true;

Burst() {
config(NUM_PARAMS, NUM_INPUTS, NUM_OUTPUTS, NUM_LIGHTS);
configSwitch(Burst::CYCLE_PARAM, 0.0, 1.0, 0.0, "Mode", {"One-shot", "Cycle"});
auto quantityParam = configParam(Burst::QUANTITY_PARAM, 1, MAX_REPETITIONS, 0, "Number of bursts");
quantityParam->snapEnabled = true;
configButton(Burst::TRIGGER_PARAM, "Manual Trigger");
configParam(Burst::QUANTITY_CV_PARAM, 0.0, 1.0, 1.0, "Quantity CV");
configParam(Burst::DISTRIBUTION_PARAM, -1.0, 1.0, 0.0, "Distribution");
auto timeParam = configParam(Burst::TIME_PARAM, -4.0, 4.0, 0.0, "Time Division/Multiplication");
timeParam->snapEnabled = true;
configParam(Burst::PROBABILITY_PARAM, 0.0, 1.0, 0.0, "Probability", "%", 0.f, -100, 100.);

configInput(QUANTITY_INPUT, "Quantity CV");
configInput(DISTRIBUTION_INPUT, "Distribution");
configInput(PING_INPUT, "Ping");
configInput(TIME_INPUT, "Time Division/Multiplication");
configInput(PROBABILITY_INPUT, "Probability");
configInput(TRIGGER_INPUT, "Trigger");
ledUpdate.setDivision(ledUpdateRate);
}

void process(const ProcessArgs& args) override {

const bool pingReceived = pingTrigger.process(inputs[PING_INPUT].getVoltage());
pingableClock.process(pingReceived, args.sampleTime);

if (ledUpdate.process()) {
updateLEDRing(args);
}

const float quantityCV = params[QUANTITY_CV_PARAM].getValue() * clamp(inputs[QUANTITY_INPUT].getVoltage(), -5.0, +10.f) / 5.f;
const int quantity = clamp((int)(params[QUANTITY_PARAM].getValue() + std::round(16 * quantityCV)), 1, MAX_REPETITIONS);

const bool loop = params[CYCLE_PARAM].getValue();

const float divMultCV = 4.0 * inputs[TIME_INPUT].getVoltage() / 10.f;
const int divMult = -clamp((int)(divMultCV + params[TIME_PARAM].getValue()), -4, +4);

const float distributionCV = inputs[DISTRIBUTION_INPUT].getVoltage() / 10.f;
const float distribution = clamp(distributionCV + params[DISTRIBUTION_PARAM].getValue(), -1.f, +1.f);

const bool triggerInputTriggered = triggTrigger.process(inputs[TRIGGER_INPUT].getVoltage());
const bool triggerButtonTriggered = buttonTrigger.process(params[TRIGGER_PARAM].getValue());
const bool startBurst = triggerInputTriggered || triggerButtonTriggered;

if (startBurst) {
const float prob = clamp(params[PROBABILITY_PARAM].getValue() + inputs[PROBABILITY_INPUT].getVoltage() / 10.f, 0.f, 1.f);
const bool inhibitBurst = rack::random::uniform() < prob;

// remember to do at current tempo
burstEngine.trigger(quantity, divMult, pingableClock.tempo, distribution, inhibitBurst, includeOriginalTrigger);
}

float burstOut, eocOut;
bool eoc;
std::tie(burstOut, eocOut, eoc) = burstEngine.process(args.sampleTime);

// if the burst has finished, we can also re-trigger
if (eoc && loop) {
const float prob = clamp(params[PROBABILITY_PARAM].getValue() + inputs[PROBABILITY_INPUT].getVoltage() / 10.f, 0.f, 1.f);
const bool inhibitBurst = rack::random::uniform() < prob;

// remember to do at current tempo
burstEngine.trigger(quantity, divMult, pingableClock.tempo, distribution, inhibitBurst, includeOriginalTrigger);
}

const bool tempoOutHigh = pingableClock.isTempoOutHigh();
outputs[TEMPO_OUTPUT].setVoltage(10.f * tempoOutHigh);
lights[TEMPO_LIGHT].setBrightnessSmooth(tempoOutHigh, args.sampleTime);

outputs[OUT_OUTPUT].setVoltage(10.f * burstOut);
lights[OUT_LIGHT].setBrightnessSmooth(burstOut, args.sampleTime);

outputs[EOC_OUTPUT].setVoltage(10.f * eocOut);
lights[EOC_LIGHT].setBrightnessSmooth(eocOut, args.sampleTime);
}

void updateLEDRing(const ProcessArgs& args) {
int activeLed;
if (burstEngine.active) {
activeLed = (burstEngine.triggersOccurred - 1) % 16;
}
else {
activeLed = (((int) params[QUANTITY_PARAM].getValue() - 1) % 16);
}
for (int i = 0; i < 16; ++i) {
lights[QUANTITY_LIGHTS + i].setBrightnessSmooth(i == activeLed, args.sampleTime * ledUpdateRate);
}
}

json_t* dataToJson() override {
json_t* rootJ = json_object();
json_object_set_new(rootJ, "includeOriginalTrigger", json_boolean(includeOriginalTrigger));

return rootJ;
}

void dataFromJson(json_t* rootJ) override {
json_t* includeOriginalTriggerJ = json_object_get(rootJ, "includeOriginalTrigger");
if (includeOriginalTriggerJ) {
includeOriginalTrigger = json_boolean_value(includeOriginalTriggerJ);
}
}
};


struct BurstWidget : ModuleWidget {
BurstWidget(Burst* module) {
setModule(module);
setPanel(APP->window->loadSvg(asset::plugin(pluginInstance, "res/panels/Burst.svg")));

addChild(createWidget<Knurlie>(Vec(15, 0)));
addChild(createWidget<Knurlie>(Vec(15, 365)));

addParam(createParam<BefacoSwitch>(mm2px(Vec(28.44228, 10.13642)), module, Burst::CYCLE_PARAM));
addParam(createParam<Davies1900hWhiteKnobEndless>(mm2px(Vec(9.0322, 16.21467)), module, Burst::QUANTITY_PARAM));
addParam(createParam<BefacoPush>(mm2px(Vec(28.43253, 29.6592)), module, Burst::TRIGGER_PARAM));
addParam(createParam<BefacoTinyKnobLightGrey>(mm2px(Vec(17.26197, 41.95461)), module, Burst::QUANTITY_CV_PARAM));
addParam(createParam<BefacoTinyKnobDarkGrey>(mm2px(Vec(22.85243, 58.45676)), module, Burst::DISTRIBUTION_PARAM));
addParam(createParam<BefacoTinyKnobBlack>(mm2px(Vec(28.47229, 74.91607)), module, Burst::TIME_PARAM));
addParam(createParam<BefacoTinyKnobDarkGrey>(mm2px(Vec(22.75115, 91.35201)), module, Burst::PROBABILITY_PARAM));

addInput(createInput<BananutBlack>(mm2px(Vec(2.02153, 42.27628)), module, Burst::QUANTITY_INPUT));
addInput(createInput<BananutBlack>(mm2px(Vec(7.90118, 58.74959)), module, Burst::DISTRIBUTION_INPUT));
addInput(createInput<BananutBlack>(mm2px(Vec(2.05023, 75.25163)), module, Burst::PING_INPUT));
addInput(createInput<BananutBlack>(mm2px(Vec(13.7751, 75.23049)), module, Burst::TIME_INPUT));
addInput(createInput<BananutBlack>(mm2px(Vec(7.89545, 91.66642)), module, Burst::PROBABILITY_INPUT));
addInput(createInput<BananutBlack>(mm2px(Vec(1.11155, 109.30346)), module, Burst::TRIGGER_INPUT));

addOutput(createOutput<BananutRed>(mm2px(Vec(11.07808, 109.30346)), module, Burst::TEMPO_OUTPUT));
addOutput(createOutput<BananutRed>(mm2px(Vec(21.08452, 109.32528)), module, Burst::EOC_OUTPUT));
addOutput(createOutput<BananutRed>(mm2px(Vec(31.01113, 109.30346)), module, Burst::OUT_OUTPUT));

addChild(createLight<SmallLight<RedLight>>(mm2px(Vec(14.03676, 9.98712)), module, Burst::QUANTITY_LIGHTS + 0));
addChild(createLight<SmallLight<RedLight>>(mm2px(Vec(18.35846, 10.85879)), module, Burst::QUANTITY_LIGHTS + 1));
addChild(createLight<SmallLight<RedLight>>(mm2px(Vec(22.05722, 13.31827)), module, Burst::QUANTITY_LIGHTS + 2));
addChild(createLight<SmallLight<RedLight>>(mm2px(Vec(24.48707, 16.96393)), module, Burst::QUANTITY_LIGHTS + 3));
addChild(createLight<SmallLight<RedLight>>(mm2px(Vec(25.38476, 21.2523)), module, Burst::QUANTITY_LIGHTS + 4));
addChild(createLight<SmallLight<RedLight>>(mm2px(Vec(24.48707, 25.5354)), module, Burst::QUANTITY_LIGHTS + 5));
addChild(createLight<SmallLight<RedLight>>(mm2px(Vec(22.05722, 29.16905)), module, Burst::QUANTITY_LIGHTS + 6));
addChild(createLight<SmallLight<RedLight>>(mm2px(Vec(18.35846, 31.62236)), module, Burst::QUANTITY_LIGHTS + 7));
addChild(createLight<SmallLight<RedLight>>(mm2px(Vec(14.03676, 32.48786)), module, Burst::QUANTITY_LIGHTS + 8));
addChild(createLight<SmallLight<RedLight>>(mm2px(Vec(9.74323, 31.62236)), module, Burst::QUANTITY_LIGHTS + 9));
addChild(createLight<SmallLight<RedLight>>(mm2px(Vec(6.10149, 29.16905)), module, Burst::QUANTITY_LIGHTS + 10));
addChild(createLight<SmallLight<RedLight>>(mm2px(Vec(3.68523, 25.5354)), module, Burst::QUANTITY_LIGHTS + 11));
addChild(createLight<SmallLight<RedLight>>(mm2px(Vec(2.85312, 21.2523)), module, Burst::QUANTITY_LIGHTS + 12));
addChild(createLight<SmallLight<RedLight>>(mm2px(Vec(3.68523, 16.96393)), module, Burst::QUANTITY_LIGHTS + 13));
addChild(createLight<SmallLight<RedLight>>(mm2px(Vec(6.10149, 13.31827)), module, Burst::QUANTITY_LIGHTS + 14));
addChild(createLight<SmallLight<RedLight>>(mm2px(Vec(9.74323, 10.85879)), module, Burst::QUANTITY_LIGHTS + 15));
addChild(createLight<SmallLight<RedLight>>(mm2px(Vec(14.18119, 104.2831)), module, Burst::TEMPO_LIGHT));
addChild(createLight<SmallLight<RedLight>>(mm2px(Vec(24.14772, 104.2831)), module, Burst::EOC_LIGHT));
addChild(createLight<SmallLight<RedLight>>(mm2px(Vec(34.11425, 104.2831)), module, Burst::OUT_LIGHT));
}

void appendContextMenu(Menu* menu) override {
Burst* module = dynamic_cast<Burst*>(this->module);
assert(module);

menu->addChild(new MenuSeparator());
menu->addChild(createBoolPtrMenuItem("Include original trigger in output", "", &module->includeOriginalTrigger));
}
};


Model* modelBurst = createModel<Burst, BurstWidget>("Burst");


+ 1
- 0
src/plugin.cpp View File

@@ -27,4 +27,5 @@ void init(rack::Plugin *p) {
p->addModel(modelChannelStrip);
p->addModel(modelPonyVCO);
p->addModel(modelMotionMTR);
p->addModel(modelBurst);
}

+ 8
- 0
src/plugin.hpp View File

@@ -28,6 +28,7 @@ extern Model* modelNoisePlethora;
extern Model* modelChannelStrip;
extern Model* modelPonyVCO;
extern Model* modelMotionMTR;
extern Model* modelBurst;

struct Knurlie : SvgScrew {
Knurlie() {
@@ -221,6 +222,13 @@ struct BefacoSlidePotSmall : app::SvgSlider {
}
};

struct Davies1900hWhiteKnobEndless : Davies1900hKnob {
Davies1900hWhiteKnobEndless() {
setSvg(Svg::load(asset::plugin(pluginInstance, "res/components/Davies1900hWhiteEndless.svg")));
bg->setSvg(Svg::load(asset::plugin(pluginInstance, "res/components/Davies1900hWhiteEndless_bg.svg")));
}
};

inline int unsigned_modulo(int a, int b) {
return ((a % b) + b) % b;
}


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