Change channel limit from 2 to 32.

pedalboard/BufferUtils.h

@@ -91,8 +91,8 @@ juce::AudioBuffer<T> copyPyArrayIntoJuceBuffer(
 
   if (numChannels == 0) {
     throw std::runtime_error("No channels passed!");
-  } else if (numChannels > 2) {
-    throw std::runtime_error("More than two channels received!");
+  } else if (numChannels > 32) {
+    throw std::runtime_error("More than 32 channels received!");
   }
 
   juce::AudioBuffer<T> ioBuffer(numChannels, numSamples);
@@ -173,8 +173,8 @@ const juce::AudioBuffer<T> convertPyArrayIntoJuceBuffer(
 
     if (numChannels == 0) {
       throw std::runtime_error("No channels passed!");
-    } else if (numChannels > 2) {
-      throw std::runtime_error("More than two channels received!");
+    } else if (numChannels > 32) {
+      throw std::runtime_error("More than 32 channels received!");
     }
 
     T **channelPointers = (T **)alloca(numChannels * sizeof(T *));

tests/plugins/effect/.gitignore

@@ -0,0 +1,2 @@
+*/Builds*
+*/JuceLibraryCode*

tests/plugins/effect/UnityGainNChannel/Source/PluginEditor.cpp

@@ -0,0 +1,40 @@
+/*
+  ==============================================================================
+
+    This file contains the basic framework code for a JUCE plugin editor.
+
+  ==============================================================================
+*/
+
+#include "PluginProcessor.h"
+#include "PluginEditor.h"
+
+//==============================================================================
+UnityGainNChannelAudioProcessorEditor::UnityGainNChannelAudioProcessorEditor (UnityGainNChannelAudioProcessor& p)
+    : AudioProcessorEditor (&p), audioProcessor (p)
+{
+    // 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);
+}
+
+UnityGainNChannelAudioProcessorEditor::~UnityGainNChannelAudioProcessorEditor()
+{
+}
+
+//==============================================================================
+void UnityGainNChannelAudioProcessorEditor::paint (juce::Graphics& g)
+{
+    // (Our component is opaque, so we must completely fill the background with a solid colour)
+    g.fillAll (getLookAndFeel().findColour (juce::ResizableWindow::backgroundColourId));
+
+    g.setColour (juce::Colours::white);
+    g.setFont (15.0f);
+    g.drawFittedText ("Hello World!", getLocalBounds(), juce::Justification::centred, 1);
+}
+
+void UnityGainNChannelAudioProcessorEditor::resized()
+{
+    // This is generally where you'll want to lay out the positions of any
+    // subcomponents in your editor..
+}

tests/plugins/effect/UnityGainNChannel/Source/PluginEditor.h

@@ -0,0 +1,33 @@
+/*
+  ==============================================================================
+
+    This file contains the basic framework code for a JUCE plugin editor.
+
+  ==============================================================================
+*/
+
+#pragma once
+
+#include <JuceHeader.h>
+#include "PluginProcessor.h"
+
+//==============================================================================
+/**
+*/
+class UnityGainNChannelAudioProcessorEditor  : public juce::AudioProcessorEditor
+{
+public:
+    UnityGainNChannelAudioProcessorEditor (UnityGainNChannelAudioProcessor&);
+    ~UnityGainNChannelAudioProcessorEditor() override;
+
+    //==============================================================================
+    void paint (juce::Graphics&) override;
+    void resized() override;
+
+private:
+    // This reference is provided as a quick way for your editor to
+    // access the processor object that created it.
+    UnityGainNChannelAudioProcessor& audioProcessor;
+
+    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (UnityGainNChannelAudioProcessorEditor)
+};

tests/plugins/effect/UnityGainNChannel/Source/PluginProcessor.cpp

@@ -0,0 +1,168 @@
+/*
+  ==============================================================================
+
+    This file contains the basic framework code for a JUCE plugin processor.
+
+  ==============================================================================
+*/
+
+#include "PluginProcessor.h"
+#include "PluginEditor.h"
+
+//==============================================================================
+UnityGainNChannelAudioProcessor::UnityGainNChannelAudioProcessor()
+#ifndef JucePlugin_PreferredChannelConfigurations
+     : AudioProcessor (BusesProperties()
+                     #if ! JucePlugin_IsMidiEffect
+                      #if ! JucePlugin_IsSynth
+                       .withInput  ("Input",  juce::AudioChannelSet::discreteChannels(32), true)
+                      #endif
+                       .withOutput ("Output", juce::AudioChannelSet::discreteChannels(32), true)
+                     #endif
+                       )
+#endif
+{
+}
+
+UnityGainNChannelAudioProcessor::~UnityGainNChannelAudioProcessor()
+{
+}
+
+//==============================================================================
+const juce::String UnityGainNChannelAudioProcessor::getName() const
+{
+    return JucePlugin_Name;
+}
+
+bool UnityGainNChannelAudioProcessor::acceptsMidi() const
+{
+   #if JucePlugin_WantsMidiInput
+    return true;
+   #else
+    return false;
+   #endif
+}
+
+bool UnityGainNChannelAudioProcessor::producesMidi() const
+{
+   #if JucePlugin_ProducesMidiOutput
+    return true;
+   #else
+    return false;
+   #endif
+}
+
+bool UnityGainNChannelAudioProcessor::isMidiEffect() const
+{
+   #if JucePlugin_IsMidiEffect
+    return true;
+   #else
+    return false;
+   #endif
+}
+
+double UnityGainNChannelAudioProcessor::getTailLengthSeconds() const
+{
+    return 0.0;
+}
+
+int UnityGainNChannelAudioProcessor::getNumPrograms()
+{
+    return 1;   // NB: some hosts don't cope very well if you tell them there are 0 programs,
+                // so this should be at least 1, even if you're not really implementing programs.
+}
+
+int UnityGainNChannelAudioProcessor::getCurrentProgram()
+{
+    return 0;
+}
+
+void UnityGainNChannelAudioProcessor::setCurrentProgram (int index)
+{
+}
+
+const juce::String UnityGainNChannelAudioProcessor::getProgramName (int index)
+{
+    return {};
+}
+
+void UnityGainNChannelAudioProcessor::changeProgramName (int index, const juce::String& newName)
+{
+}
+
+//==============================================================================
+void UnityGainNChannelAudioProcessor::prepareToPlay (double sampleRate, int samplesPerBlock)
+{
+    // Use this method as the place to do any pre-playback
+    // initialisation that you need..
+}
+
+void UnityGainNChannelAudioProcessor::releaseResources()
+{
+    // When playback stops, you can use this as an opportunity to free up any
+    // spare memory, etc.
+}
+
+#ifndef JucePlugin_PreferredChannelConfigurations
+bool UnityGainNChannelAudioProcessor::isBusesLayoutSupported (const BusesLayout& layouts) const
+{
+  #if JucePlugin_IsMidiEffect
+    juce::ignoreUnused (layouts);
+    return true;
+  #else
+
+    // This checks if the input layout matches the output layout
+   #if ! JucePlugin_IsSynth
+    if (layouts.getMainOutputChannelSet() != layouts.getMainInputChannelSet())
+        return false;
+   #endif
+
+    return true;
+  #endif
+}
+#endif
+
+void UnityGainNChannelAudioProcessor::processBlock (juce::AudioBuffer<float>& buffer, juce::MidiBuffer& midiMessages)
+{
+	juce::ScopedNoDenormals noDenormals;
+
+	for (auto i = 0; i < buffer.getNumSamples(); ++i)
+	{
+		for (auto j = 0; j < buffer.getNumChannels(); ++j)
+		{
+			*buffer.getWritePointer(j, i) = *buffer.getReadPointer(j, i);
+		}
+	}
+}
+
+//==============================================================================
+bool UnityGainNChannelAudioProcessor::hasEditor() const
+{
+    return true; // (change this to false if you choose to not supply an editor)
+}
+
+juce::AudioProcessorEditor* UnityGainNChannelAudioProcessor::createEditor()
+{
+    return new UnityGainNChannelAudioProcessorEditor (*this);
+}
+
+//==============================================================================
+void UnityGainNChannelAudioProcessor::getStateInformation (juce::MemoryBlock& destData)
+{
+    // You should use this method to store your parameters in the memory block.
+    // You could do that either as raw data, or use the XML or ValueTree classes
+    // as intermediaries to make it easy to save and load complex data.
+}
+
+void UnityGainNChannelAudioProcessor::setStateInformation (const void* data, int sizeInBytes)
+{
+    // You should use this method to restore your parameters from this memory block,
+    // whose contents will have been created by the getStateInformation() call.
+}
+
+//==============================================================================
+// This creates new instances of the plugin..
+juce::AudioProcessor* JUCE_CALLTYPE createPluginFilter()
+{
+    return new UnityGainNChannelAudioProcessor();
+}

tests/plugins/effect/UnityGainNChannel/Source/PluginProcessor.h

@@ -0,0 +1,62 @@
+/*
+  ==============================================================================
+
+    This file contains the basic framework code for a JUCE plugin processor.
+
+  ==============================================================================
+*/
+
+#pragma once
+
+#include <JuceHeader.h>
+
+//==============================================================================
+/**
+*/
+class UnityGainNChannelAudioProcessor  : public juce::AudioProcessor
+                            #if JucePlugin_Enable_ARA
+                             , public juce::AudioProcessorARAExtension
+                            #endif
+{
+public:
+    //==============================================================================
+    UnityGainNChannelAudioProcessor();
+    ~UnityGainNChannelAudioProcessor() override;
+
+    //==============================================================================
+    void prepareToPlay (double sampleRate, int samplesPerBlock) override;
+    void releaseResources() override;
+
+   #ifndef JucePlugin_PreferredChannelConfigurations
+    bool isBusesLayoutSupported (const BusesLayout& layouts) const override;
+   #endif
+
+    void processBlock (juce::AudioBuffer<float>&, juce::MidiBuffer&) override;
+
+    //==============================================================================
+    juce::AudioProcessorEditor* createEditor() override;
+    bool hasEditor() const override;
+
+    //==============================================================================
+    const juce::String getName() const override;
+
+    bool acceptsMidi() const override;
+    bool producesMidi() const override;
+    bool isMidiEffect() const override;
+    double getTailLengthSeconds() const override;
+
+    //==============================================================================
+    int getNumPrograms() override;
+    int getCurrentProgram() override;
+    void setCurrentProgram (int index) override;
+    const juce::String getProgramName (int index) override;
+    void changeProgramName (int index, const juce::String& newName) override;
+
+    //==============================================================================
+    void getStateInformation (juce::MemoryBlock& destData) override;
+    void setStateInformation (const void* data, int sizeInBytes) override;
+
+private:
+    //==============================================================================
+    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (UnityGainNChannelAudioProcessor)
+};

tests/plugins/effect/UnityGainNChannel/UnityGainNChannel.jucer

@@ -0,0 +1,55 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<JUCERPROJECT id="BK6haA" name="UnityGainNChannel" projectType="audioplug"
+              useAppConfig="0" addUsingNamespaceToJuceHeader="0" displaySplashScreen="1"
+              jucerFormatVersion="1">
+  <MAINGROUP id="l4smPP" name="UnityGainNChannel">
+    <GROUP id="{0210CB18-7889-3D0B-F8A5-F554843C1CEC}" name="Source">
+      <FILE id="xRP3IP" name="PluginProcessor.cpp" compile="1" resource="0"
+            file="Source/PluginProcessor.cpp"/>
+      <FILE id="bnCQ1V" name="PluginProcessor.h" compile="0" resource="0"
+            file="Source/PluginProcessor.h"/>
+      <FILE id="gLKfHv" name="PluginEditor.cpp" compile="1" resource="0"
+            file="Source/PluginEditor.cpp"/>
+      <FILE id="Fb7ULJ" name="PluginEditor.h" compile="0" resource="0" file="Source/PluginEditor.h"/>
+    </GROUP>
+  </MAINGROUP>
+  <JUCEOPTIONS JUCE_STRICT_REFCOUNTEDPOINTER="1" JUCE_VST3_CAN_REPLACE_VST2="0"/>
+  <EXPORTFORMATS>
+    <VS2017 targetFolder="Builds/VisualStudio2017">
+      <CONFIGURATIONS>
+        <CONFIGURATION isDebug="1" name="Debug" targetName="UnityGainNChannel"/>
+        <CONFIGURATION isDebug="0" name="Release" targetName="UnityGainNChannel"/>
+      </CONFIGURATIONS>
+      <MODULEPATHS>
+        <MODULEPATH id="juce_audio_basics" path="../../../../../../../../JUCE/modules"/>
+        <MODULEPATH id="juce_audio_devices" path="../../../../../../../../JUCE/modules"/>
+        <MODULEPATH id="juce_audio_formats" path="../../../../../../../../JUCE/modules"/>
+        <MODULEPATH id="juce_audio_plugin_client" path="../../../../../../../../JUCE/modules"/>
+        <MODULEPATH id="juce_audio_processors" path="../../../../../../../../JUCE/modules"/>
+        <MODULEPATH id="juce_audio_utils" path="../../../../../../../../JUCE/modules"/>
+        <MODULEPATH id="juce_core" path="../../../../../../../../JUCE/modules"/>
+        <MODULEPATH id="juce_data_structures" path="../../../../../../../../JUCE/modules"/>
+        <MODULEPATH id="juce_events" path="../../../../../../../../JUCE/modules"/>
+        <MODULEPATH id="juce_graphics" path="../../../../../../../../JUCE/modules"/>
+        <MODULEPATH id="juce_gui_basics" path="../../../../../../../../JUCE/modules"/>
+        <MODULEPATH id="juce_gui_extra" path="../../../../../../../../JUCE/modules"/>
+      </MODULEPATHS>
+    </VS2017>
+  </EXPORTFORMATS>
+  <MODULES>
+    <MODULE id="juce_audio_basics" showAllCode="1" useLocalCopy="0" useGlobalPath="1"/>
+    <MODULE id="juce_audio_devices" showAllCode="1" useLocalCopy="0" useGlobalPath="1"/>
+    <MODULE id="juce_audio_formats" showAllCode="1" useLocalCopy="0" useGlobalPath="1"/>
+    <MODULE id="juce_audio_plugin_client" showAllCode="1" useLocalCopy="0"
+            useGlobalPath="1"/>
+    <MODULE id="juce_audio_processors" showAllCode="1" useLocalCopy="0" useGlobalPath="1"/>
+    <MODULE id="juce_audio_utils" showAllCode="1" useLocalCopy="0" useGlobalPath="1"/>
+    <MODULE id="juce_core" showAllCode="1" useLocalCopy="0" useGlobalPath="1"/>
+    <MODULE id="juce_data_structures" showAllCode="1" useLocalCopy="0" useGlobalPath="1"/>
+    <MODULE id="juce_events" showAllCode="1" useLocalCopy="0" useGlobalPath="1"/>
+    <MODULE id="juce_graphics" showAllCode="1" useLocalCopy="0" useGlobalPath="1"/>
+    <MODULE id="juce_gui_basics" showAllCode="1" useLocalCopy="0" useGlobalPath="1"/>
+    <MODULE id="juce_gui_extra" showAllCode="1" useLocalCopy="0" useGlobalPath="1"/>
+  </MODULES>
+</JUCERPROJECT>