paulxstretch/deps/juce/extras/AudioPluginHost/Source/Plugins/InternalPlugins.cpp

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/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2020 - Raw Material Software Limited
JUCE is an open source library subject to commercial or open-source
licensing.
By using JUCE, you agree to the terms of both the JUCE 6 End-User License
Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020).
End User License Agreement: www.juce.com/juce-6-licence
Privacy Policy: www.juce.com/juce-privacy-policy
Or: You may also use this code under the terms of the GPL v3 (see
www.gnu.org/licenses).
JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
DISCLAIMED.
==============================================================================
*/
#include <JuceHeader.h>
#include <juce_audio_plugin_client/juce_audio_plugin_client.h>
#include "InternalPlugins.h"
#include "PluginGraph.h"
#include "../../../../examples/Plugins/AUv3SynthPluginDemo.h"
#include "../../../../examples/Plugins/ArpeggiatorPluginDemo.h"
#include "../../../../examples/Plugins/AudioPluginDemo.h"
#include "../../../../examples/Plugins/DSPModulePluginDemo.h"
#include "../../../../examples/Plugins/GainPluginDemo.h"
#include "../../../../examples/Plugins/MidiLoggerPluginDemo.h"
#include "../../../../examples/Plugins/MultiOutSynthPluginDemo.h"
#include "../../../../examples/Plugins/NoiseGatePluginDemo.h"
#include "../../../../examples/Plugins/SamplerPluginDemo.h"
#include "../../../../examples/Plugins/SurroundPluginDemo.h"
//==============================================================================
class InternalPlugin : public AudioPluginInstance
{
public:
explicit InternalPlugin (std::unique_ptr<AudioProcessor> innerIn)
: inner (std::move (innerIn))
{
jassert (inner != nullptr);
for (auto isInput : { true, false })
matchChannels (isInput);
setBusesLayout (inner->getBusesLayout());
}
//==============================================================================
const String getName() const override { return inner->getName(); }
StringArray getAlternateDisplayNames() const override { return inner->getAlternateDisplayNames(); }
double getTailLengthSeconds() const override { return inner->getTailLengthSeconds(); }
bool acceptsMidi() const override { return inner->acceptsMidi(); }
bool producesMidi() const override { return inner->producesMidi(); }
AudioProcessorEditor* createEditor() override { return inner->createEditor(); }
bool hasEditor() const override { return inner->hasEditor(); }
int getNumPrograms() override { return inner->getNumPrograms(); }
int getCurrentProgram() override { return inner->getCurrentProgram(); }
void setCurrentProgram (int i) override { inner->setCurrentProgram (i); }
const String getProgramName (int i) override { return inner->getProgramName (i); }
void changeProgramName (int i, const String& n) override { inner->changeProgramName (i, n); }
void getStateInformation (juce::MemoryBlock& b) override { inner->getStateInformation (b); }
void setStateInformation (const void* d, int s) override { inner->setStateInformation (d, s); }
void getCurrentProgramStateInformation (juce::MemoryBlock& b) override { inner->getCurrentProgramStateInformation (b); }
void setCurrentProgramStateInformation (const void* d, int s) override { inner->setCurrentProgramStateInformation (d, s); }
void prepareToPlay (double sr, int bs) override { inner->setRateAndBufferSizeDetails (sr, bs); inner->prepareToPlay (sr, bs); }
void releaseResources() override { inner->releaseResources(); }
void memoryWarningReceived() override { inner->memoryWarningReceived(); }
void processBlock (AudioBuffer<float>& a, MidiBuffer& m) override { inner->processBlock (a, m); }
void processBlock (AudioBuffer<double>& a, MidiBuffer& m) override { inner->processBlock (a, m); }
void processBlockBypassed (AudioBuffer<float>& a, MidiBuffer& m) override { inner->processBlockBypassed (a, m); }
void processBlockBypassed (AudioBuffer<double>& a, MidiBuffer& m) override { inner->processBlockBypassed (a, m); }
bool supportsDoublePrecisionProcessing() const override { return inner->supportsDoublePrecisionProcessing(); }
bool supportsMPE() const override { return inner->supportsMPE(); }
bool isMidiEffect() const override { return inner->isMidiEffect(); }
void reset() override { inner->reset(); }
void setNonRealtime (bool b) noexcept override { inner->setNonRealtime (b); }
void refreshParameterList() override { inner->refreshParameterList(); }
void numChannelsChanged() override { inner->numChannelsChanged(); }
void numBusesChanged() override { inner->numBusesChanged(); }
void processorLayoutsChanged() override { inner->processorLayoutsChanged(); }
void setPlayHead (AudioPlayHead* p) override { inner->setPlayHead (p); }
void updateTrackProperties (const TrackProperties& p) override { inner->updateTrackProperties (p); }
bool isBusesLayoutSupported (const BusesLayout& layout) const override { return inner->checkBusesLayoutSupported (layout); }
bool canAddBus (bool) const override { return true; }
bool canRemoveBus (bool) const override { return true; }
//==============================================================================
void fillInPluginDescription (PluginDescription& description) const override
{
description = getPluginDescription (*inner);
}
private:
static PluginDescription getPluginDescription (const AudioProcessor& proc)
{
const auto ins = proc.getTotalNumInputChannels();
const auto outs = proc.getTotalNumOutputChannels();
const auto identifier = proc.getName();
const auto registerAsGenerator = ins == 0;
const auto acceptsMidi = proc.acceptsMidi();
PluginDescription descr;
descr.name = identifier;
descr.descriptiveName = identifier;
descr.pluginFormatName = InternalPluginFormat::getIdentifier();
descr.category = (registerAsGenerator ? (acceptsMidi ? "Synth" : "Generator") : "Effect");
descr.manufacturerName = "JUCE";
descr.version = ProjectInfo::versionString;
descr.fileOrIdentifier = identifier;
descr.isInstrument = (acceptsMidi && registerAsGenerator);
descr.numInputChannels = ins;
descr.numOutputChannels = outs;
descr.uniqueId = descr.deprecatedUid = identifier.hashCode();
return descr;
}
void matchChannels (bool isInput)
{
const auto inBuses = inner->getBusCount (isInput);
while (getBusCount (isInput) < inBuses)
addBus (isInput);
while (inBuses < getBusCount (isInput))
removeBus (isInput);
}
std::unique_ptr<AudioProcessor> inner;
//==============================================================================
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (InternalPlugin)
};
//==============================================================================
class SineWaveSynth : public AudioProcessor
{
public:
SineWaveSynth()
: AudioProcessor (BusesProperties().withOutput ("Output", AudioChannelSet::stereo()))
{
const int numVoices = 8;
// Add some voices...
for (int i = numVoices; --i >= 0;)
synth.addVoice (new SineWaveVoice());
// ..and give the synth a sound to play
synth.addSound (new SineWaveSound());
}
static String getIdentifier()
{
return "Sine Wave Synth";
}
//==============================================================================
void prepareToPlay (double newSampleRate, int) override
{
synth.setCurrentPlaybackSampleRate (newSampleRate);
}
void releaseResources() override {}
//==============================================================================
void processBlock (AudioBuffer<float>& buffer, MidiBuffer& midiMessages) override
{
const int numSamples = buffer.getNumSamples();
buffer.clear();
synth.renderNextBlock (buffer, midiMessages, 0, numSamples);
buffer.applyGain (0.8f);
}
using AudioProcessor::processBlock;
const String getName() const override { return getIdentifier(); }
double getTailLengthSeconds() const override { return 0.0; }
bool acceptsMidi() const override { return true; }
bool producesMidi() const override { return true; }
AudioProcessorEditor* createEditor() override { return nullptr; }
bool hasEditor() const override { return false; }
int getNumPrograms() override { return 1; }
int getCurrentProgram() override { return 0; }
void setCurrentProgram (int) override {}
const String getProgramName (int) override { return {}; }
void changeProgramName (int, const String&) override {}
void getStateInformation (juce::MemoryBlock&) override {}
void setStateInformation (const void*, int) override {}
private:
//==============================================================================
struct SineWaveSound : public SynthesiserSound
{
SineWaveSound() = default;
bool appliesToNote (int /*midiNoteNumber*/) override { return true; }
bool appliesToChannel (int /*midiChannel*/) override { return true; }
};
struct SineWaveVoice : public SynthesiserVoice
{
SineWaveVoice() = default;
bool canPlaySound (SynthesiserSound* sound) override
{
return dynamic_cast<SineWaveSound*> (sound) != nullptr;
}
void startNote (int midiNoteNumber, float velocity,
SynthesiserSound* /*sound*/,
int /*currentPitchWheelPosition*/) override
{
currentAngle = 0.0;
level = velocity * 0.15;
tailOff = 0.0;
double cyclesPerSecond = MidiMessage::getMidiNoteInHertz (midiNoteNumber);
double cyclesPerSample = cyclesPerSecond / getSampleRate();
angleDelta = cyclesPerSample * 2.0 * MathConstants<double>::pi;
}
void stopNote (float /*velocity*/, bool allowTailOff) override
{
if (allowTailOff)
{
// start a tail-off by setting this flag. The render callback will pick up on
// this and do a fade out, calling clearCurrentNote() when it's finished.
if (tailOff == 0.0) // we only need to begin a tail-off if it's not already doing so - the
// stopNote method could be called more than once.
tailOff = 1.0;
}
else
{
// we're being told to stop playing immediately, so reset everything..
clearCurrentNote();
angleDelta = 0.0;
}
}
void pitchWheelMoved (int /*newValue*/) override
{
// not implemented for the purposes of this demo!
}
void controllerMoved (int /*controllerNumber*/, int /*newValue*/) override
{
// not implemented for the purposes of this demo!
}
void renderNextBlock (AudioBuffer<float>& outputBuffer, int startSample, int numSamples) override
{
if (angleDelta != 0.0)
{
if (tailOff > 0)
{
while (--numSamples >= 0)
{
const float currentSample = (float) (sin (currentAngle) * level * tailOff);
for (int i = outputBuffer.getNumChannels(); --i >= 0;)
outputBuffer.addSample (i, startSample, currentSample);
currentAngle += angleDelta;
++startSample;
tailOff *= 0.99;
if (tailOff <= 0.005)
{
// tells the synth that this voice has stopped
clearCurrentNote();
angleDelta = 0.0;
break;
}
}
}
else
{
while (--numSamples >= 0)
{
const float currentSample = (float) (sin (currentAngle) * level);
for (int i = outputBuffer.getNumChannels(); --i >= 0;)
outputBuffer.addSample (i, startSample, currentSample);
currentAngle += angleDelta;
++startSample;
}
}
}
}
using SynthesiserVoice::renderNextBlock;
private:
double currentAngle = 0, angleDelta = 0, level = 0, tailOff = 0;
};
//==============================================================================
Synthesiser synth;
//==============================================================================
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (SineWaveSynth)
};
//==============================================================================
class ReverbPlugin : public AudioProcessor
{
public:
ReverbPlugin()
: AudioProcessor (BusesProperties().withInput ("Input", AudioChannelSet::stereo())
.withOutput ("Output", AudioChannelSet::stereo()))
{}
static String getIdentifier()
{
return "Reverb";
}
void prepareToPlay (double newSampleRate, int) override
{
reverb.setSampleRate (newSampleRate);
}
void reset() override
{
reverb.reset();
}
void releaseResources() override {}
void processBlock (AudioBuffer<float>& buffer, MidiBuffer&) override
{
auto numChannels = buffer.getNumChannels();
if (numChannels == 1)
reverb.processMono (buffer.getWritePointer (0), buffer.getNumSamples());
else
reverb.processStereo (buffer.getWritePointer (0),
buffer.getWritePointer (1),
buffer.getNumSamples());
for (int ch = 2; ch < numChannels; ++ch)
buffer.clear (ch, 0, buffer.getNumSamples());
}
using AudioProcessor::processBlock;
const String getName() const override { return getIdentifier(); }
double getTailLengthSeconds() const override { return 0.0; }
bool acceptsMidi() const override { return false; }
bool producesMidi() const override { return false; }
AudioProcessorEditor* createEditor() override { return nullptr; }
bool hasEditor() const override { return false; }
int getNumPrograms() override { return 1; }
int getCurrentProgram() override { return 0; }
void setCurrentProgram (int) override {}
const String getProgramName (int) override { return {}; }
void changeProgramName (int, const String&) override {}
void getStateInformation (juce::MemoryBlock&) override {}
void setStateInformation (const void*, int) override {}
private:
Reverb reverb;
};
//==============================================================================
InternalPluginFormat::InternalPluginFactory::InternalPluginFactory (const std::initializer_list<Constructor>& constructorsIn)
: constructors (constructorsIn),
descriptions ([&]
{
std::vector<PluginDescription> result;
for (const auto& constructor : constructors)
result.push_back (constructor()->getPluginDescription());
return result;
}())
{}
std::unique_ptr<AudioPluginInstance> InternalPluginFormat::InternalPluginFactory::createInstance (const String& name) const
{
const auto begin = descriptions.begin();
const auto it = std::find_if (begin,
descriptions.end(),
[&] (const PluginDescription& desc) { return name.equalsIgnoreCase (desc.name); });
if (it == descriptions.end())
return nullptr;
const auto index = (size_t) std::distance (begin, it);
return constructors[index]();
}
InternalPluginFormat::InternalPluginFormat()
: factory {
[] { return std::make_unique<AudioProcessorGraph::AudioGraphIOProcessor> (AudioProcessorGraph::AudioGraphIOProcessor::audioInputNode); },
[] { return std::make_unique<AudioProcessorGraph::AudioGraphIOProcessor> (AudioProcessorGraph::AudioGraphIOProcessor::midiInputNode); },
[] { return std::make_unique<AudioProcessorGraph::AudioGraphIOProcessor> (AudioProcessorGraph::AudioGraphIOProcessor::audioOutputNode); },
[] { return std::make_unique<AudioProcessorGraph::AudioGraphIOProcessor> (AudioProcessorGraph::AudioGraphIOProcessor::midiOutputNode); },
[] { return std::make_unique<InternalPlugin> (std::make_unique<SineWaveSynth>()); },
[] { return std::make_unique<InternalPlugin> (std::make_unique<ReverbPlugin>()); },
[] { return std::make_unique<InternalPlugin> (std::make_unique<AUv3SynthProcessor>()); },
[] { return std::make_unique<InternalPlugin> (std::make_unique<Arpeggiator>()); },
[] { return std::make_unique<InternalPlugin> (std::make_unique<DspModulePluginDemoAudioProcessor>()); },
[] { return std::make_unique<InternalPlugin> (std::make_unique<GainProcessor>()); },
[] { return std::make_unique<InternalPlugin> (std::make_unique<JuceDemoPluginAudioProcessor>()); },
[] { return std::make_unique<InternalPlugin> (std::make_unique<MidiLoggerPluginDemoProcessor>()); },
[] { return std::make_unique<InternalPlugin> (std::make_unique<MultiOutSynth>()); },
[] { return std::make_unique<InternalPlugin> (std::make_unique<NoiseGate>()); },
[] { return std::make_unique<InternalPlugin> (std::make_unique<SamplerAudioProcessor>()); },
[] { return std::make_unique<InternalPlugin> (std::make_unique<SurroundProcessor>()); }
}
{
}
std::unique_ptr<AudioPluginInstance> InternalPluginFormat::createInstance (const String& name)
{
return factory.createInstance (name);
}
void InternalPluginFormat::createPluginInstance (const PluginDescription& desc,
double /*initialSampleRate*/, int /*initialBufferSize*/,
PluginCreationCallback callback)
{
if (auto p = createInstance (desc.name))
callback (std::move (p), {});
else
callback (nullptr, NEEDS_TRANS ("Invalid internal plugin name"));
}
bool InternalPluginFormat::requiresUnblockedMessageThreadDuringCreation (const PluginDescription&) const
{
return false;
}
const std::vector<PluginDescription>& InternalPluginFormat::getAllTypes() const
{
return factory.getDescriptions();
}