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https://github.com/juce-framework/JUCE.git
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108 lines
4.3 KiB
C++
108 lines
4.3 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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#include "../JuceLibraryCode/JuceHeader.h"
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#include "../../GenericEditor.h"
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//==============================================================================
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/**
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*/
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class GainProcessor : public AudioProcessor
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{
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public:
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//==============================================================================
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GainProcessor()
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: AudioProcessor (BusesProperties().withInput ("Input", AudioChannelSet::stereo())
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.withOutput ("Output", AudioChannelSet::stereo()))
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{
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addParameter (gain = new AudioParameterFloat ("gain", "Gain", 0.0f, 1.0f, 0.5f));
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}
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~GainProcessor() {}
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//==============================================================================
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void prepareToPlay (double, int) override {}
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void releaseResources() override {}
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void processBlock (AudioBuffer<float>& buffer, MidiBuffer&) override
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{
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buffer.applyGain (*gain);
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}
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//==============================================================================
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AudioProcessorEditor* createEditor() override { return new GenericEditor (*this); }
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bool hasEditor() const override { return true; }
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//==============================================================================
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const String getName() const override { return "Gain PlugIn"; }
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bool acceptsMidi() const override { return false; }
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bool producesMidi() const override { return false; }
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double getTailLengthSeconds() const override { return 0; }
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//==============================================================================
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int getNumPrograms() override { return 1; }
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int getCurrentProgram() override { return 0; }
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void setCurrentProgram (int) override {}
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const String getProgramName (int) override { return String(); }
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void changeProgramName (int , const String& ) override { }
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//==============================================================================
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void getStateInformation (MemoryBlock& destData) override
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{
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MemoryOutputStream (destData, true).writeFloat (*gain);
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}
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void setStateInformation (const void* data, int sizeInBytes) override
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{
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gain->setValueNotifyingHost (MemoryInputStream (data, static_cast<size_t> (sizeInBytes), false).readFloat());
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}
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//==============================================================================
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bool isBusesLayoutSupported (const BusesLayout& layouts) const override
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{
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const AudioChannelSet& mainInLayout = layouts.getChannelSet (true, 0);
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const AudioChannelSet& mainOutLayout = layouts.getChannelSet (false, 0);
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return (mainInLayout == mainOutLayout && (! mainInLayout.isDisabled()));
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}
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private:
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//==============================================================================
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AudioParameterFloat* gain;
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enum { kVST2MaxChannels = 16 };
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//==============================================================================
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (GainProcessor)
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};
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//==============================================================================
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// This creates new instances of the plugin..
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AudioProcessor* JUCE_CALLTYPE createPluginFilter()
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{
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return new GainProcessor();
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}
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