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100 lines
3.7 KiB
C++
100 lines
3.7 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2017 - ROLI Ltd.
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JUCE is an open source library subject to commercial or open-source
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licensing.
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By using JUCE, you agree to the terms of both the JUCE 5 End-User License
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Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
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27th April 2017).
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End User License Agreement: www.juce.com/juce-5-licence
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Privacy Policy: www.juce.com/juce-5-privacy-policy
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Or: You may also use this code under the terms of the GPL v3 (see
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www.gnu.org/licenses).
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JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
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EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
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DISCLAIMED.
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==============================================================================
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*/
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#pragma once
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#include "../JuceLibraryCode/JuceHeader.h"
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#include <array>
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// A simple Inter-App Audio plug-in with a gain control and some meters.
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class IAAEffectProcessor : public AudioProcessor
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{
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public:
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IAAEffectProcessor();
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~IAAEffectProcessor();
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//==============================================================================
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void prepareToPlay (double sampleRate, int samplesPerBlock) override;
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void releaseResources() override;
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bool isBusesLayoutSupported (const BusesLayout& layouts) const override;
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void processBlock (AudioSampleBuffer&, MidiBuffer&) override;
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//==============================================================================
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AudioProcessorEditor* createEditor() override;
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bool hasEditor() const override;
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//==============================================================================
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const String getName() const override;
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bool acceptsMidi() const override;
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bool producesMidi() const override;
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double getTailLengthSeconds() const override;
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//==============================================================================
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int getNumPrograms() override;
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int getCurrentProgram() override;
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void setCurrentProgram (int index) override;
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const String getProgramName (int index) override;
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void changeProgramName (int index, const String& newName) override;
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//==============================================================================
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void getStateInformation (MemoryBlock& destData) override;
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void setStateInformation (const void* data, int sizeInBytes) override;
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//==============================================================================
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bool updateCurrentTimeInfoFromHost (AudioPlayHead::CurrentPositionInfo&);
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// Allow an IAAAudioProcessorEditor to register as a listener to receive new
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// meter values directly from the audio thread.
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struct MeterListener
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{
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virtual ~MeterListener() {};
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virtual void handleNewMeterValue (int, float) = 0;
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};
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void addMeterListener (MeterListener& listener) { meterListeners.add (&listener); };
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void removeMeterListener (MeterListener& listener) { meterListeners.remove (&listener); };
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private:
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//==============================================================================
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AudioProcessorValueTreeState parameters;
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float previousGain = 0.0;
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std::array <float, 2> meterValues = { { 0, 0 } };
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// This keeps a copy of the last set of timing info that was acquired during an
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// audio callback - the UI component will display this.
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AudioPlayHead::CurrentPositionInfo lastPosInfo;
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ListenerList<MeterListener> meterListeners;
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (IAAEffectProcessor)
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};
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