day 2 source code

Demo-Plugin/Demo-Plugin.jucer

@@ -5,6 +5,8 @@
               version="0.1" companyName="ZHdK-Plugin-Kurs" pluginChannelConfigs="{1,4}">
   <MAINGROUP id="RDeQpu" name="Demo-Plugin">
     <GROUP id="{198DF08A-A841-9364-CFB2-DEBA3E565C4F}" name="Source">
+      <FILE id="yGk5We" name="MainGui.cpp" compile="1" resource="0" file="Source/MainGui.cpp"/>
+      <FILE id="rYATkz" name="MainGui.h" compile="0" resource="0" file="Source/MainGui.h"/>
       <FILE id="BNDEYk" name="PluginProcessor.cpp" compile="1" resource="0"
             file="Source/PluginProcessor.cpp"/>
       <FILE id="WKYcaQ" name="PluginProcessor.h" compile="0" resource="0"

Demo-Plugin/Source/MainGui.cpp

+/*
+  ==============================================================================
+
+  This is an automatically generated GUI class created by the Projucer!
+
+  Be careful when adding custom code to these files, as only the code within
+  the "//[xyz]" and "//[/xyz]" sections will be retained when the file is loaded
+  and re-saved.
+
+  Created with Projucer version: 6.0.7
+
+  ------------------------------------------------------------------------------
+
+  The Projucer is part of the JUCE library.
+  Copyright (c) 2020 - Raw Material Software Limited.
+
+  ==============================================================================
+*/
+
+//[Headers] You can add your own extra header files here...
+//[/Headers]
+
+#include "MainGui.h"
+
+
+//[MiscUserDefs] You can add your own user definitions and misc code here...
+//[/MiscUserDefs]
+
+//==============================================================================
+MainGui::MainGui ()
+{
+    //[Constructor_pre] You can add your own custom stuff here..
+    //[/Constructor_pre]
+
+    juce__textButton.reset (new juce::TextButton ("new button"));
+    addAndMakeVisible (juce__textButton.get());
+    juce__textButton->addListener (this);
+
+    juce__textButton->setBounds (96, 32, 150, 24);
+
+
+    //[UserPreSize]
+    //[/UserPreSize]
+
+    setSize (600, 400);
+
+
+    //[Constructor] You can add your own custom stuff here..
+    //[/Constructor]
+}
+
+MainGui::~MainGui()
+{
+    //[Destructor_pre]. You can add your own custom destruction code here..
+    //[/Destructor_pre]
+
+    juce__textButton = nullptr;
+
+
+    //[Destructor]. You can add your own custom destruction code here..
+    //[/Destructor]
+}
+
+//==============================================================================
+void MainGui::paint (juce::Graphics& g)
+{
+    //[UserPrePaint] Add your own custom painting code here..
+    //[/UserPrePaint]
+
+    g.fillAll (juce::Colour (0xff323e44));
+
+    //[UserPaint] Add your own custom painting code here..
+    //[/UserPaint]
+}
+
+void MainGui::resized()
+{
+    //[UserPreResize] Add your own custom resize code here..
+    //[/UserPreResize]
+
+    //[UserResized] Add your own custom resize handling here..
+    //[/UserResized]
+}
+
+void MainGui::buttonClicked (juce::Button* buttonThatWasClicked)
+{
+    //[UserbuttonClicked_Pre]
+    //[/UserbuttonClicked_Pre]
+
+    if (buttonThatWasClicked == juce__textButton.get())
+    {
+        //[UserButtonCode_juce__textButton] -- add your button handler code here..
+        //[/UserButtonCode_juce__textButton]
+    }
+
+    //[UserbuttonClicked_Post]
+    //[/UserbuttonClicked_Post]
+}
+
+
+
+//[MiscUserCode] You can add your own definitions of your custom methods or any other code here...
+//[/MiscUserCode]
+
+
+//==============================================================================
+#if 0
+/*  -- Projucer information section --
+
+    This is where the Projucer stores the metadata that describe this GUI layout, so
+    make changes in here at your peril!
+
+BEGIN_JUCER_METADATA
+
+<JUCER_COMPONENT documentType="Component" className="MainGui" componentName=""
+                 parentClasses="public juce::Component" constructorParams="" variableInitialisers=""
+                 snapPixels="8" snapActive="1" snapShown="1" overlayOpacity="0.330"
+                 fixedSize="0" initialWidth="600" initialHeight="400">
+  <BACKGROUND backgroundColour="ff323e44"/>
+  <TEXTBUTTON name="new button" id="48346f05801f4060" memberName="juce__textButton"
+              virtualName="" explicitFocusOrder="0" pos="96 32 150 24" buttonText="new button"
+              connectedEdges="0" needsCallback="1" radioGroupId="0"/>
+</JUCER_COMPONENT>
+
+END_JUCER_METADATA
+*/
+#endif
+
+
+//[EndFile] You can add extra defines here...
+//[/EndFile]
+

Demo-Plugin/Source/MainGui.h

+/*
+  ==============================================================================
+
+  This is an automatically generated GUI class created by the Projucer!
+
+  Be careful when adding custom code to these files, as only the code within
+  the "//[xyz]" and "//[/xyz]" sections will be retained when the file is loaded
+  and re-saved.
+
+  Created with Projucer version: 6.0.7
+
+  ------------------------------------------------------------------------------
+
+  The Projucer is part of the JUCE library.
+  Copyright (c) 2020 - Raw Material Software Limited.
+
+  ==============================================================================
+*/
+
+#pragma once
+
+//[Headers]     -- You can add your own extra header files here --
+#include <JuceHeader.h>
+//[/Headers]
+
+
+
+//==============================================================================
+/**
+                                                                    //[Comments]
+    An auto-generated component, created by the Projucer.
+
+    Describe your class and how it works here!
+                                                                    //[/Comments]
+*/
+class MainGui  : public juce::Component,
+                 public juce::Button::Listener
+{
+public:
+    //==============================================================================
+    MainGui ();
+    ~MainGui() override;
+
+    //==============================================================================
+    //[UserMethods]     -- You can add your own custom methods in this section.
+    //[/UserMethods]
+
+    void paint (juce::Graphics& g) override;
+    void resized() override;
+    void buttonClicked (juce::Button* buttonThatWasClicked) override;
+
+
+
+private:
+    //[UserVariables]   -- You can add your own custom variables in this section.
+    //[/UserVariables]
+
+    //==============================================================================
+    std::unique_ptr<juce::TextButton> juce__textButton;
+
+
+    //==============================================================================
+    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (MainGui)
+};
+
+//[EndFile] You can add extra defines here...
+//[/EndFile]
+

Demo-Plugin/Source/PluginEditor.cpp

@@ -13,6 +13,10 @@
 DemoPluginAudioProcessorEditor::DemoPluginAudioProcessorEditor (DemoPluginAudioProcessor& p)
     : AudioProcessorEditor (&p), audioProcessor (p)
 {
+    // we create an instance of our class MainGui and save the pointer to the variable mainGui
+    mainGui = new MainGui();
+    addAndMakeVisible(mainGui);
+    
     // Make sure that before the constructor has finished, you've set the
     // editor's size to whatever you need it to be.
     setSize (400, 300);
@@ -20,6 +24,8 @@ DemoPluginAudioProcessorEditor::DemoPluginAudioProcessorEditor (DemoPluginAudioP
 
 DemoPluginAudioProcessorEditor::~DemoPluginAudioProcessorEditor()
 {
+    // because we manually created our main GUI, we have to delete it here!
+    delete mainGui;
 }
 
 //==============================================================================
@@ -35,6 +41,6 @@ void DemoPluginAudioProcessorEditor::paint (juce::Graphics& g)
 
 void DemoPluginAudioProcessorEditor::resized()
 {
-    // This is generally where you'll want to lay out the positions of any
-    // subcomponents in your editor..
+    // we use the whole available gui space for our main GUI
+    mainGui->setBounds(getBounds());
 }

Demo-Plugin/Source/PluginEditor.h

@@ -10,6 +10,7 @@
 
 #include <JuceHeader.h>
 #include "PluginProcessor.h"
+#include "MainGui.h"
 
 //==============================================================================
 /**
@@ -28,6 +29,9 @@ private:
     // This reference is provided as a quick way for your editor to
     // access the processor object that created it.
     DemoPluginAudioProcessor& audioProcessor;
+    
+    // a pointer to our main GUI instance
+    MainGui* mainGui;
 
     JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (DemoPluginAudioProcessorEditor)
 };

Demo-Plugin/Source/PluginProcessor.cpp

@@ -22,6 +22,8 @@ DemoPluginAudioProcessor::DemoPluginAudioProcessor()
                        )
 #endif
 {
+    // initialize class variables to avoid undefined values and big surprises!
+    runningValue = 0;
 }
 
 DemoPluginAudioProcessor::~DemoPluginAudioProcessor()
@@ -150,12 +152,37 @@ void DemoPluginAudioProcessor::processBlock (juce::AudioBuffer<float>& buffer, j
     // the samples and the outer loop is handling the channels.
     // Alternatively, you can process the samples with the channels
     // interleaved by keeping the same state.
-    for (int channel = 0; channel < totalNumInputChannels; ++channel)
+    
+    // first we copy our audio input
+    AudioBuffer<float> input(1, buffer.getNumSamples());
+    input.copyFrom(0, 0, buffer, 0, 0, buffer.getNumSamples());
+    
+    // we ask for a pointer to our readable data
+    const float* readPointer = input.getReadPointer(0);
+    
+    // we loop through all output channels
+    for (int channel = 0; channel < totalNumOutputChannels; ++channel)
     {
+        // we define an additional angle of 0/90/180/270 for the channels 0-4
+        float additionalAngle = channel * 3.14 * 0.5;
+        
+        // we get a write pointer to the main buffer
         auto* channelData = buffer.getWritePointer (channel);
 
-        // ..do something to the data...
+        // we loop through all samples in the buffer
+        for(int iData = 0; iData < buffer.getNumSamples(); iData++)
+        {
+            // we define a factor that is dependent on the current time and produces a 1Hz sinus curve
+            float factor = sin((runningValue + iData) / getSampleRate() * 3.14 + additionalAngle);
+            
+            // we multiply the input data with that factor and save it to the output buffer (through the write pointer)
+            
+            channelData[iData] = readPointer[iData] * factor;
+        }
     }
+    
+    // finally we update our runningValue
+    runningValue += buffer.getNumSamples();
 }
 
 //==============================================================================

Demo-Plugin/Source/PluginProcessor.h

@@ -54,6 +54,8 @@ public:
     void setStateInformation (const void* data, int sizeInBytes) override;
 
 private:
+    // a variable that exists throuout the whole lifetime of our DemoPluginAudioProcessor instance
+    int runningValue;
     //==============================================================================
     JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (DemoPluginAudioProcessor)
 };