127 lines
5.2 KiB
C++
127 lines
5.2 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE framework examples.
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Copyright (c) Raw Material Software Limited
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The code included in this file is provided under the terms of the ISC license
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http://www.isc.org/downloads/software-support-policy/isc-license. Permission
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to use, copy, modify, and/or distribute this software for any purpose with or
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without fee is hereby granted provided that the above copyright notice and
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this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
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REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
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INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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PERFORMANCE OF THIS SOFTWARE.
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==============================================================================
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*/
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/*******************************************************************************
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The block below describes the properties of this PIP. A PIP is a short snippet
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of code that can be read by the Projucer and used to generate a JUCE project.
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BEGIN_JUCE_PIP_METADATA
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name: GainPlugin
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version: 1.0.0
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vendor: JUCE
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website: http://juce.com
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description: Gain audio plugin.
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dependencies: juce_audio_basics, juce_audio_devices, juce_audio_formats,
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juce_audio_plugin_client, juce_audio_processors,
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juce_audio_utils, juce_core, juce_data_structures,
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juce_events, juce_graphics, juce_gui_basics, juce_gui_extra
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exporters: xcode_mac, vs2022
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moduleFlags: JUCE_STRICT_REFCOUNTEDPOINTER=1
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type: AudioProcessor
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mainClass: GainProcessor
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useLocalCopy: 1
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END_JUCE_PIP_METADATA
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*******************************************************************************/
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#pragma once
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//==============================================================================
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class GainProcessor final : 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", 1 }, "Gain", 0.0f, 1.0f, 0.5f));
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}
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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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void processBlock (AudioBuffer<double>& buffer, MidiBuffer&) override
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{
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buffer.applyGain ((float) *gain);
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}
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//==============================================================================
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AudioProcessorEditor* createEditor() override { return new GenericAudioProcessorEditor (*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 "None"; }
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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 auto& mainInLayout = layouts.getChannelSet (true, 0);
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const auto& 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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//==============================================================================
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (GainProcessor)
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};
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