BogaudioModules

AD.cpp (5592B)

---

 
 #include "AD.hpp"
 
 #define INVERT "invert"
 
 void AD::Engine::reset() {
 	trigger.reset();
 	eocPulseGen.process(10.0);
 	envelope.reset();
 	on = false;
 }
 
 void AD::Engine::sampleRateChange() {
 	float sr = APP->engine->getSampleRate();
 	envelope.setSampleRate(sr);
 	attackSL.setParams(sr / (float)modulationSteps);
 	decaySL.setParams(sr / (float)modulationSteps);
 }
 
 void AD::reset() {
 	for (int c = 0; c < _channels; ++c) {
 		_engines[c]->reset();
 	}
 }
 
 void AD::sampleRateChange() {
 	for (int c = 0; c < _channels; ++c) {
 		_engines[c]->sampleRateChange();
 	}
 }
 
 json_t* AD::saveToJson(json_t* root) {
 	json_object_set_new(root, INVERT, json_real(_invert));
 	return root;
 }
 
 void AD::loadFromJson(json_t* root) {
 	json_t* i = json_object_get(root, INVERT);
 	if (i) {
 		_invert = json_real_value(i);
 	}
 }
 
 bool AD::active() {
 	return inputs[TRIGGER_INPUT].isConnected() || outputs[ENV_OUTPUT].isConnected() || outputs[EOC_OUTPUT].isConnected();
 }
 
 int AD::channels() {
 	return inputs[TRIGGER_INPUT].getChannels();
 }
 
 void AD::addChannel(int c) {
 	_engines[c] = new Engine(_modulationSteps);
 	_engines[c]->reset();
 	_engines[c]->sampleRateChange();
 }
 
 void AD::removeChannel(int c) {
 	delete _engines[c];
 	_engines[c] = NULL;
 }
 
 void AD::modulateChannel(int c) {
 	Engine& e = *_engines[c];
 
 	float attack = powf(params[ATTACK_PARAM].getValue(), 2.0f);
 	if (inputs[ATTACK_INPUT].isConnected()) {
 		attack *= clamp(inputs[ATTACK_INPUT].getPolyVoltage(c) / 10.0f, 0.0f, 1.0f);
 	}
 	e.envelope.setAttack(e.attackSL.next(attack * 10.f));
 
 	float decay = powf(params[DECAY_PARAM].getValue(), 2.0f);
 	if (inputs[DECAY_INPUT].isConnected()) {
 		decay *= clamp(inputs[DECAY_INPUT].getPolyVoltage(c) / 10.0f, 0.0f, 1.0f);
 	}
 	e.envelope.setDecay(e.decaySL.next(decay * 10.f));
 
 	e.envelope.setLinearShape(_linearMode);
 
 	_retriggerMode = params[RETRIGGER_PARAM].getValue() > 0.5f;
 	_loopMode = params[LOOP_PARAM].getValue() > 0.5f;
 	_linearMode = params[LINEAR_PARAM].getValue() > 0.5f;
 }
 
 void AD::processAlways(const ProcessArgs& args) {
 	_attackLightSum = _decayLightSum = 0;
 }
 
 void AD::processChannel(const ProcessArgs& args, int c) {
 	Engine& e = *_engines[c];
 
 	bool start = e.trigger.process(inputs[TRIGGER_INPUT].getVoltage(c));
 	if (!e.on && (
 		start ||
 		(_retriggerMode && e.trigger.isHigh()) ||
 		(_loopMode && e.envelope.isStage(ADSR::STOPPED_STAGE))
 	)) {
 		e.on = true;
 	} else if (e.on && start && _retriggerMode) {
 		if (_loopMode) {
 			e.envelope.reset();
 		}
 		else {
 			e.envelope.retrigger();
 		}
 	}
 	e.envelope.setGate(e.on);
 	outputs[ENV_OUTPUT].setChannels(_channels);
 	outputs[ENV_OUTPUT].setVoltage(e.envelope.next() * 10.0f * _invert, c);
 	if (e.on && e.envelope.isStage(ADSR::SUSTAIN_STAGE)) {
 		e.envelope.reset();
 		e.on = false;
 		e.eocPulseGen.trigger(0.001f);
 	}
 	outputs[EOC_OUTPUT].setChannels(_channels);
 	outputs[EOC_OUTPUT].setVoltage(e.eocPulseGen.process(APP->engine->getSampleTime()) ? 5.0f : 0.0f, c);
 
 	_attackLightSum += e.envelope.isStage(ADSR::ATTACK_STAGE);
 	_decayLightSum += e.envelope.isStage(ADSR::DECAY_STAGE);
 }
 
 void AD::postProcessAlways(const ProcessArgs& args) {
 	lights[ATTACK_LIGHT].value = _attackLightSum * _inverseChannels;
 	lights[DECAY_LIGHT].value = _decayLightSum * _inverseChannels;
 }
 
 struct ADWidget : BGModuleWidget {
 	static constexpr int hp = 3;
 
 	ADWidget(AD* module) {
 		setModule(module);
 		box.size = Vec(RACK_GRID_WIDTH * hp, RACK_GRID_HEIGHT);
 		setPanel(box.size, "AD");
 		createScrews();
 
 		// generated by svg_widgets.rb
 		auto attackParamPosition = Vec(8.0, 33.0);
 		auto decayParamPosition = Vec(8.0, 90.0);
 		auto retriggerParamPosition = Vec(12.0, 131.5);
 		auto loopParamPosition = Vec(33.0, 131.5);
 		auto linearParamPosition = Vec(26.0, 146.0);
 
 		auto triggerInputPosition = Vec(10.5, 163.5);
 		auto attackInputPosition = Vec(10.5, 198.5);
 		auto decayInputPosition = Vec(10.5, 233.5);
 
 		auto envOutputPosition = Vec(10.5, 271.5);
 		auto eocOutputPosition = Vec(10.5, 306.5);
 
 		auto attackLightPosition = Vec(20.8, 65.0);
 		auto decayLightPosition = Vec(20.8, 122.0);
 		// end generated by svg_widgets.rb
 
 		addParam(createParam<Knob29>(attackParamPosition, module, AD::ATTACK_PARAM));
 		addParam(createParam<Knob29>(decayParamPosition, module, AD::DECAY_PARAM));
 		addParam(createParam<IndicatorButtonGreen9>(loopParamPosition, module, AD::LOOP_PARAM));
 		addParam(createParam<IndicatorButtonGreen9>(linearParamPosition, module, AD::LINEAR_PARAM));
 		addParam(createParam<IndicatorButtonGreen9>(retriggerParamPosition, module, AD::RETRIGGER_PARAM));
 
 		addInput(createInput<Port24>(triggerInputPosition, module, AD::TRIGGER_INPUT));
 		addInput(createInput<Port24>(attackInputPosition, module, AD::ATTACK_INPUT));
 		addInput(createInput<Port24>(decayInputPosition, module, AD::DECAY_INPUT));
 
 		addOutput(createOutput<Port24>(envOutputPosition, module, AD::ENV_OUTPUT));
 		addOutput(createOutput<Port24>(eocOutputPosition, module, AD::EOC_OUTPUT));
 
 		addChild(createLight<BGTinyLight<GreenLight>>(attackLightPosition, module, AD::ATTACK_LIGHT));
 		addChild(createLight<BGTinyLight<GreenLight>>(decayLightPosition, module, AD::DECAY_LIGHT));
 	}
 
 	void contextMenu(Menu* menu) override {
 		auto m = dynamic_cast<AD*>(module);
 		assert(m);
 		menu->addChild(new OptionMenuItem(
 			"Invert output",
 			[m]() { return m->_invert == -1.0f; },
 			[m]() {
 				if (m->_invert < 0.0f) {
 					m->_invert = 1.0f;
 				}
 				else {
 					m->_invert = -1.0f;
 				}
 			}
 		));
 	}
 };
 
 Model* modelAD = bogaudio::createModel<AD, ADWidget>("Bogaudio-AD", "AD", "Attack/decay envelope generator", "Envelope generator", "Polyphonic");