andrewm@0: /* andrewm@0: This code accompanies the textbook: andrewm@0: andrewm@0: Digital Audio Effects: Theory, Implementation and Application andrewm@0: Joshua D. Reiss and Andrew P. McPherson andrewm@0: andrewm@0: --- andrewm@0: andrewm@0: Phaser: phasing effect using time-varying allpass filters andrewm@0: See textbook Chapter 4: Filter Effects andrewm@0: andrewm@0: Code by Andrew McPherson, Brecht De Man and Joshua Reiss andrewm@0: andrewm@0: --- andrewm@0: andrewm@0: This program is free software: you can redistribute it and/or modify andrewm@0: it under the terms of the GNU General Public License as published by andrewm@0: the Free Software Foundation, either version 3 of the License, or andrewm@0: (at your option) any later version. andrewm@0: andrewm@0: This program is distributed in the hope that it will be useful, andrewm@0: but WITHOUT ANY WARRANTY; without even the implied warranty of andrewm@0: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the andrewm@0: GNU General Public License for more details. andrewm@0: andrewm@0: You should have received a copy of the GNU General Public License andrewm@0: along with this program. If not, see . andrewm@0: */ andrewm@0: andrewm@0: #include "PluginProcessor.h" andrewm@0: #include "PluginEditor.h" andrewm@0: andrewm@0: andrewm@0: //============================================================================== andrewm@0: PhaserAudioProcessorEditor::PhaserAudioProcessorEditor (PhaserAudioProcessor* ownerFilter) andrewm@0: : AudioProcessorEditor (ownerFilter), andrewm@0: baseFrequencyLabel_("", "Base Frequency (Hz):"), andrewm@0: sweepWidthLabel_("", "Sweep Width (Hz):"), andrewm@0: depthLabel_("", "Depth:"), andrewm@0: feedbackLabel_("", "Feedback:"), andrewm@0: lfoFrequencyLabel_("", "LFO Frequency:"), andrewm@0: waveformLabel_("", "LFO Waveform:"), andrewm@0: filtersLabel_("", "Number of Filters:") andrewm@0: { andrewm@0: andrewm@0: // Set up the sliders andrewm@0: addAndMakeVisible (&baseFrequencySlider_); andrewm@0: baseFrequencySlider_.setSliderStyle (Slider::Rotary); andrewm@0: baseFrequencySlider_.addListener (this); andrewm@0: baseFrequencySlider_.setRange (50.0, 1000.0, 0.5); andrewm@0: andrewm@0: addAndMakeVisible (&sweepWidthSlider_); andrewm@0: sweepWidthSlider_.setSliderStyle (Slider::Rotary); andrewm@0: sweepWidthSlider_.addListener (this); andrewm@0: sweepWidthSlider_.setRange (50.0, 5000.0, 0.5); andrewm@0: andrewm@0: addAndMakeVisible (&depthSlider_); andrewm@0: depthSlider_.setSliderStyle (Slider::Rotary); andrewm@0: depthSlider_.addListener (this); andrewm@0: depthSlider_.setRange (0.0, 1.0, 0.01); andrewm@0: andrewm@0: addAndMakeVisible (&feedbackSlider_); andrewm@0: feedbackSlider_.setSliderStyle (Slider::Rotary); andrewm@0: feedbackSlider_.addListener (this); andrewm@0: feedbackSlider_.setRange (0.0, 0.99, 0.01); andrewm@0: andrewm@0: addAndMakeVisible (&lfoFrequencySlider_); andrewm@0: lfoFrequencySlider_.setSliderStyle (Slider::Rotary); andrewm@0: lfoFrequencySlider_.addListener (this); andrewm@0: lfoFrequencySlider_.setRange (0.05, 2.0, 0.025); andrewm@0: andrewm@0: addAndMakeVisible(&waveformComboBox_); andrewm@0: waveformComboBox_.setEditableText(false); andrewm@0: waveformComboBox_.setJustificationType(Justification::left); andrewm@0: waveformComboBox_.addItem("Sine", PhaserAudioProcessor::kWaveformSine); andrewm@0: waveformComboBox_.addItem("Triangle", PhaserAudioProcessor::kWaveformTriangle); andrewm@0: waveformComboBox_.addItem("Square", PhaserAudioProcessor::kWaveformSquare); andrewm@0: waveformComboBox_.addItem("Sawtooth", PhaserAudioProcessor::kWaveformSawtooth); andrewm@0: waveformComboBox_.addListener(this); andrewm@0: andrewm@0: addAndMakeVisible(&filtersComboBox_); andrewm@0: filtersComboBox_.setEditableText(false); andrewm@0: filtersComboBox_.setJustificationType(Justification::left); andrewm@0: filtersComboBox_.addItem("2", 2); andrewm@0: filtersComboBox_.addItem("4", 4); andrewm@0: filtersComboBox_.addItem("6", 6); andrewm@0: filtersComboBox_.addItem("8", 8); andrewm@0: filtersComboBox_.addItem("10", 10); andrewm@0: filtersComboBox_.addListener(this); andrewm@0: andrewm@0: addAndMakeVisible(&stereoToggleButton_); andrewm@0: stereoToggleButton_.setName("Stereo"); andrewm@0: stereoToggleButton_.setButtonText("Stereo"); andrewm@0: stereoToggleButton_.addListener(this); andrewm@0: andrewm@0: baseFrequencyLabel_.attachToComponent(&baseFrequencySlider_, false); andrewm@0: baseFrequencyLabel_.setFont(Font (11.0f)); andrewm@0: andrewm@0: sweepWidthLabel_.attachToComponent(&sweepWidthSlider_, false); andrewm@0: sweepWidthLabel_.setFont(Font (11.0f)); andrewm@0: andrewm@0: depthLabel_.attachToComponent(&depthSlider_, false); andrewm@0: depthLabel_.setFont(Font (11.0f)); andrewm@0: andrewm@0: feedbackLabel_.attachToComponent(&feedbackSlider_, false); andrewm@0: feedbackLabel_.setFont(Font (11.0f)); andrewm@0: andrewm@0: lfoFrequencyLabel_.attachToComponent(&lfoFrequencySlider_, false); andrewm@0: lfoFrequencyLabel_.setFont(Font (11.0f)); andrewm@0: andrewm@0: waveformLabel_.attachToComponent(&waveformComboBox_, false); andrewm@0: waveformLabel_.setFont(Font (11.0f)); andrewm@0: andrewm@0: filtersLabel_.attachToComponent(&filtersComboBox_, false); andrewm@0: filtersLabel_.setFont(Font (11.0f)); andrewm@0: andrewm@0: // add the triangular resizer component for the bottom-right of the UI andrewm@0: addAndMakeVisible(resizer_ = new ResizableCornerComponent (this, &resizeLimits_)); andrewm@0: resizeLimits_.setSizeLimits(550, 200, 600, 300); andrewm@0: andrewm@0: // set our component's initial size to be the last one that was stored in the filter's settings andrewm@0: setSize(ownerFilter->lastUIWidth_, andrewm@0: ownerFilter->lastUIHeight_); andrewm@0: andrewm@0: startTimer(50); andrewm@0: } andrewm@0: andrewm@0: PhaserAudioProcessorEditor::~PhaserAudioProcessorEditor() andrewm@0: { andrewm@0: } andrewm@0: andrewm@0: //============================================================================== andrewm@0: void PhaserAudioProcessorEditor::paint (Graphics& g) andrewm@0: { andrewm@0: g.fillAll (Colours::grey); andrewm@0: } andrewm@0: andrewm@0: void PhaserAudioProcessorEditor::resized() andrewm@0: { andrewm@0: baseFrequencySlider_.setBounds (20, 20, 150, 40); andrewm@0: sweepWidthSlider_.setBounds (200, 20, 150, 40); andrewm@0: depthSlider_.setBounds(380, 20, 150, 40); andrewm@0: feedbackSlider_.setBounds(20, 80, 150, 40); andrewm@0: lfoFrequencySlider_.setBounds(200, 80, 150, 40); andrewm@0: waveformComboBox_.setBounds(20, 140, 200, 30); andrewm@0: filtersComboBox_.setBounds(250, 140, 200, 30); andrewm@0: stereoToggleButton_.setBounds(380, 80, 150, 40); andrewm@0: stereoToggleButton_.changeWidthToFitText(); andrewm@0: andrewm@0: resizer_->setBounds(getWidth() - 16, getHeight() - 16, 16, 16); andrewm@0: andrewm@0: getProcessor()->lastUIWidth_ = getWidth(); andrewm@0: getProcessor()->lastUIHeight_ = getHeight(); andrewm@0: } andrewm@0: andrewm@0: //============================================================================== andrewm@0: // This timer periodically checks whether any of the filter's parameters have changed... andrewm@0: void PhaserAudioProcessorEditor::timerCallback() andrewm@0: { andrewm@0: PhaserAudioProcessor* ourProcessor = getProcessor(); andrewm@0: andrewm@0: baseFrequencySlider_.setValue(ourProcessor->baseFrequency_, dontSendNotification); andrewm@0: sweepWidthSlider_.setValue(ourProcessor->sweepWidth_, dontSendNotification); andrewm@0: depthSlider_.setValue(ourProcessor->depth_, dontSendNotification); andrewm@0: feedbackSlider_.setValue(ourProcessor->feedback_, dontSendNotification); andrewm@0: lfoFrequencySlider_.setValue(ourProcessor->lfoFrequency_, dontSendNotification); b@1: waveformComboBox_.setSelectedId(ourProcessor->waveform_, dontSendNotification); b@1: filtersComboBox_.setSelectedId(ourProcessor->filtersPerChannel_, dontSendNotification); b@1: stereoToggleButton_.setToggleState((ourProcessor->stereo_ != 0), dontSendNotification); andrewm@0: } andrewm@0: andrewm@0: // This is our Slider::Listener callback, when the user drags a slider. andrewm@0: void PhaserAudioProcessorEditor::sliderValueChanged (Slider* slider) andrewm@0: { andrewm@0: // It's vital to use setParameterNotifyingHost to change any parameters that are automatable andrewm@0: // by the host, rather than just modifying them directly, otherwise the host won't know andrewm@0: // that they've changed. andrewm@0: andrewm@0: if (slider == &baseFrequencySlider_) andrewm@0: { andrewm@0: getProcessor()->setParameterNotifyingHost (PhaserAudioProcessor::kBaseFrequencyParam, andrewm@0: (float)baseFrequencySlider_.getValue()); andrewm@0: } andrewm@0: else if (slider == &sweepWidthSlider_) andrewm@0: { andrewm@0: getProcessor()->setParameterNotifyingHost (PhaserAudioProcessor::kSweepWidthParam, andrewm@0: (float)sweepWidthSlider_.getValue()); andrewm@0: } andrewm@0: else if (slider == &depthSlider_) andrewm@0: { andrewm@0: getProcessor()->setParameterNotifyingHost (PhaserAudioProcessor::kDepthParam, andrewm@0: (float)depthSlider_.getValue()); andrewm@0: } andrewm@0: else if (slider == &feedbackSlider_) andrewm@0: { andrewm@0: getProcessor()->setParameterNotifyingHost (PhaserAudioProcessor::kFeedbackParam, andrewm@0: (float)feedbackSlider_.getValue()); andrewm@0: } andrewm@0: else if (slider == &lfoFrequencySlider_) andrewm@0: { andrewm@0: getProcessor()->setParameterNotifyingHost (PhaserAudioProcessor::kLFOFrequencyParam, andrewm@0: (float)lfoFrequencySlider_.getValue()); andrewm@0: } andrewm@0: } andrewm@0: andrewm@0: // Similar callback to sliderValueChanged for ComboBox updates andrewm@0: void PhaserAudioProcessorEditor::comboBoxChanged (ComboBox *comboBox) andrewm@0: { andrewm@0: if(comboBox == &waveformComboBox_) andrewm@0: { andrewm@0: getProcessor()->setParameterNotifyingHost (PhaserAudioProcessor::kWaveformParam, andrewm@0: (float)waveformComboBox_.getSelectedId()); andrewm@0: } andrewm@0: else if(comboBox == &filtersComboBox_) andrewm@0: { andrewm@0: getProcessor()->setParameterNotifyingHost (PhaserAudioProcessor::kFiltersParam, andrewm@0: (float)filtersComboBox_.getSelectedId()); andrewm@0: } andrewm@0: } andrewm@0: andrewm@0: // Callback for toggle button andrewm@0: void PhaserAudioProcessorEditor::buttonClicked (Button *button) andrewm@0: { andrewm@0: if(button == &stereoToggleButton_) andrewm@0: { andrewm@0: if(button->getToggleState()) andrewm@0: getProcessor()->setParameterNotifyingHost (PhaserAudioProcessor::kStereoParam, 1.0); andrewm@0: else andrewm@0: getProcessor()->setParameterNotifyingHost (PhaserAudioProcessor::kStereoParam, 0.0); andrewm@0: } andrewm@0: }