25bd5d8adb
subrepo: subdir: "deps/juce" merged: "b13f9084e" upstream: origin: "https://github.com/essej/JUCE.git" branch: "sono6good" commit: "b13f9084e" git-subrepo: version: "0.4.3" origin: "https://github.com/ingydotnet/git-subrepo.git" commit: "2f68596"
530 lines
21 KiB
C++
530 lines
21 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE examples.
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Copyright (c) 2020 - 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" WITHOUT ANY WARRANTY, AND ALL WARRANTIES,
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WHETHER EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR
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PURPOSE, ARE DISCLAIMED.
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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: InterAppAudioEffectPlugin
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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: Inter-app audio effect 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_iphone
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moduleFlags: JUCE_STRICT_REFCOUNTEDPOINTER=1
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type: AudioProcessor
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mainClass: IAAEffectProcessor
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useLocalCopy: 1
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extraPluginFormats: IAA
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END_JUCE_PIP_METADATA
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*******************************************************************************/
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#pragma once
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#include <array>
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//==============================================================================
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// A very simple decaying meter.
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class SimpleMeter : public Component,
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private Timer
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{
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public:
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SimpleMeter()
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{
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startTimerHz (30);
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}
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//==============================================================================
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void paint (Graphics& g) override
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{
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g.fillAll (Colours::transparentBlack);
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auto area = g.getClipBounds();
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g.setColour (getLookAndFeel().findColour (Slider::thumbColourId));
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g.fillRoundedRectangle (area.toFloat(), 6.0);
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auto unfilledHeight = area.getHeight() * (1.0 - level);
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g.reduceClipRegion (area.getX(), area.getY(),
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area.getWidth(), (int) unfilledHeight);
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g.setColour (getLookAndFeel().findColour (Slider::trackColourId));
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g.fillRoundedRectangle (area.toFloat(), 6.0);
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}
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//==============================================================================
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// Called from the audio thread.
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void update (float newLevel)
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{
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// We don't care if maxLevel gets set to zero (in timerCallback) between the
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// load and the assignment.
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maxLevel = jmax (maxLevel.load(), newLevel);
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}
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private:
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//==============================================================================
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void timerCallback() override
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{
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auto callbackLevel = maxLevel.exchange (0.0);
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float decayFactor = 0.95f;
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if (callbackLevel > level)
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level = callbackLevel;
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else if (level > 0.001)
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level *= decayFactor;
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else
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level = 0;
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repaint();
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}
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std::atomic<float> maxLevel {0.0};
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float level = 0;
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (SimpleMeter)
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};
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//==============================================================================
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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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: AudioProcessor (BusesProperties()
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.withInput ("Input", AudioChannelSet::stereo(), true)
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.withOutput ("Output", AudioChannelSet::stereo(), true)),
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parameters (*this, nullptr, "InterAppAudioEffect",
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{ std::make_unique<AudioParameterFloat> ("gain", "Gain", NormalisableRange<float> (0.0f, 1.0f), 1.0f / 3.14f) })
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{
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}
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//==============================================================================
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void prepareToPlay (double, int) override
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{
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previousGain = *parameters.getRawParameterValue ("gain");
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}
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void releaseResources() override {}
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bool isBusesLayoutSupported (const BusesLayout& layouts) const override
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{
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if (layouts.getMainInputChannels() > 2)
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return false;
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if (layouts.getMainOutputChannelSet() != layouts.getMainInputChannelSet())
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return false;
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return true;
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}
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using AudioProcessor::processBlock;
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void processBlock (AudioBuffer<float>& buffer, MidiBuffer&) override
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{
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float gain = *parameters.getRawParameterValue ("gain");
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auto totalNumInputChannels = getTotalNumInputChannels();
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auto totalNumOutputChannels = getTotalNumOutputChannels();
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auto numSamples = buffer.getNumSamples();
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for (auto i = totalNumInputChannels; i < totalNumOutputChannels; ++i)
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buffer.clear (i, 0, buffer.getNumSamples());
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// Apply the gain to the samples using a ramp to avoid discontinuities in
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// the audio between processed buffers.
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for (auto channel = 0; channel < totalNumInputChannels; ++channel)
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{
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buffer.applyGainRamp (channel, 0, numSamples, previousGain, gain);
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auto newLevel = buffer.getMagnitude (channel, 0, numSamples);
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meterListeners.call ([=] (MeterListener& l) { l.handleNewMeterValue (channel, newLevel); });
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}
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previousGain = gain;
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// Now ask the host for the current time so we can store it to be displayed later.
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updateCurrentTimeInfoFromHost (lastPosInfo);
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}
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//==============================================================================
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AudioProcessorEditor* createEditor() override
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{
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return new IAAEffectEditor (*this, parameters);
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}
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bool hasEditor() const override { return true; }
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//==============================================================================
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const String getName() const override { return "InterAppAudioEffectPlugin"; }
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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 0.0; }
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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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if (auto xml = parameters.state.createXml())
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copyXmlToBinary (*xml, destData);
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}
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void setStateInformation (const void* data, int sizeInBytes) override
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{
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if (auto xmlState = getXmlFromBinary (data, sizeInBytes))
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if (xmlState->hasTagName (parameters.state.getType()))
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parameters.state = ValueTree::fromXml (*xmlState);
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}
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//==============================================================================
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bool updateCurrentTimeInfoFromHost (AudioPlayHead::CurrentPositionInfo& posInfo)
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{
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if (auto* ph = getPlayHead())
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{
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AudioPlayHead::CurrentPositionInfo newTime;
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if (ph->getCurrentPosition (newTime))
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{
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posInfo = newTime; // Successfully got the current time from the host.
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return true;
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}
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}
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// If the host fails to provide the current time, we'll just reset our copy to a default.
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lastPosInfo.resetToDefault();
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return false;
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}
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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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class IAAEffectEditor : public AudioProcessorEditor,
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private IAAEffectProcessor::MeterListener,
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private Timer
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{
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public:
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IAAEffectEditor (IAAEffectProcessor& p,
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AudioProcessorValueTreeState& vts)
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: AudioProcessorEditor (p),
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iaaEffectProcessor (p),
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parameters (vts)
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{
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// Register for meter value updates.
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iaaEffectProcessor.addMeterListener (*this);
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gainSlider.setSliderStyle (Slider::SliderStyle::LinearVertical);
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gainSlider.setTextBoxStyle (Slider::TextEntryBoxPosition::TextBoxAbove, false, 60, 20);
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addAndMakeVisible (gainSlider);
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for (auto& meter : meters)
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addAndMakeVisible (meter);
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// Configure all the graphics for the transport control.
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transportText.setFont (Font (Font::getDefaultMonospacedFontName(), 18.0f, Font::plain));
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transportText.setJustificationType (Justification::topLeft);
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addChildComponent (transportText);
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Path rewindShape;
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rewindShape.addRectangle (0.0, 0.0, 5.0, buttonSize);
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rewindShape.addTriangle (0.0, buttonSize * 0.5f, buttonSize, 0.0, buttonSize, buttonSize);
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rewindButton.setShape (rewindShape, true, true, false);
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rewindButton.onClick = [this]
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{
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if (transportControllable())
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iaaEffectProcessor.getPlayHead()->transportRewind();
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};
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addChildComponent (rewindButton);
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Path playShape;
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playShape.addTriangle (0.0, 0.0, 0.0, buttonSize, buttonSize, buttonSize / 2);
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playButton.setShape (playShape, true, true, false);
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playButton.onClick = [this]
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{
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if (transportControllable())
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iaaEffectProcessor.getPlayHead()->transportPlay (! lastPosInfo.isPlaying);
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};
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addChildComponent (playButton);
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Path recordShape;
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recordShape.addEllipse (0.0, 0.0, buttonSize, buttonSize);
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recordButton.setShape (recordShape, true, true, false);
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recordButton.onClick = [this]
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{
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if (transportControllable())
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iaaEffectProcessor.getPlayHead()->transportRecord (! lastPosInfo.isRecording);
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};
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addChildComponent (recordButton);
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// Configure the switch to host button.
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switchToHostButtonLabel.setFont (Font (Font::getDefaultMonospacedFontName(), 18.0f, Font::plain));
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switchToHostButtonLabel.setJustificationType (Justification::centredRight);
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switchToHostButtonLabel.setText ("Switch to\nhost app:", dontSendNotification);
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addChildComponent (switchToHostButtonLabel);
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switchToHostButton.onClick = [this]
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{
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if (transportControllable())
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{
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PluginHostType hostType;
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hostType.switchToHostApplication();
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}
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};
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addChildComponent (switchToHostButton);
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auto screenSize = Desktop::getInstance().getDisplays().getPrimaryDisplay()->userArea;
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setSize (screenSize.getWidth(), screenSize.getHeight());
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resized();
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startTimerHz (60);
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}
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~IAAEffectEditor() override
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{
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iaaEffectProcessor.removeMeterListener (*this);
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}
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//==============================================================================
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void paint (Graphics& g) override
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{
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g.fillAll (getLookAndFeel().findColour (ResizableWindow::backgroundColourId));
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}
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void resized() override
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{
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auto area = getBounds().reduced (20);
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gainSlider.setBounds (area.removeFromLeft (60));
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for (auto& meter : meters)
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{
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area.removeFromLeft (10);
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meter.setBounds (area.removeFromLeft (20));
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}
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area.removeFromLeft (20);
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transportText.setBounds (area.removeFromTop (120));
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auto navigationArea = area.removeFromTop ((int) buttonSize);
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rewindButton.setTopLeftPosition (navigationArea.getPosition());
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navigationArea.removeFromLeft ((int) buttonSize + 10);
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playButton.setTopLeftPosition (navigationArea.getPosition());
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navigationArea.removeFromLeft ((int) buttonSize + 10);
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recordButton.setTopLeftPosition (navigationArea.getPosition());
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area.removeFromTop (30);
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auto appSwitchArea = area.removeFromTop ((int) buttonSize);
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switchToHostButtonLabel.setBounds (appSwitchArea.removeFromLeft (100));
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appSwitchArea.removeFromLeft (5);
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switchToHostButton.setBounds (appSwitchArea.removeFromLeft ((int) buttonSize));
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}
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private:
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//==============================================================================
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// Called from the audio thread.
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void handleNewMeterValue (int channel, float value) override
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{
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meters[(size_t) channel].update (value);
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}
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//==============================================================================
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void timerCallback () override
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{
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auto timeInfoSuccess = iaaEffectProcessor.updateCurrentTimeInfoFromHost (lastPosInfo);
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transportText.setVisible (timeInfoSuccess);
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if (timeInfoSuccess)
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updateTransportTextDisplay();
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updateTransportButtonsDisplay();
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updateSwitchToHostDisplay();
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}
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//==============================================================================
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bool transportControllable()
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{
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auto processorPlayHead = iaaEffectProcessor.getPlayHead();
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return processorPlayHead != nullptr && processorPlayHead->canControlTransport();
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}
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//==============================================================================
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// quick-and-dirty function to format a timecode string
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String timeToTimecodeString (double seconds)
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{
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auto millisecs = roundToInt (seconds * 1000.0);
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auto absMillisecs = std::abs (millisecs);
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return String::formatted ("%02d:%02d:%02d.%03d",
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millisecs / 360000,
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(absMillisecs / 60000) % 60,
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(absMillisecs / 1000) % 60,
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absMillisecs % 1000);
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}
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// A quick-and-dirty function to format a bars/beats string.
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String quarterNotePositionToBarsBeatsString (double quarterNotes, int numerator, int denominator)
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{
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if (numerator == 0 || denominator == 0)
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return "1|1|000";
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auto quarterNotesPerBar = (numerator * 4 / denominator);
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auto beats = (fmod (quarterNotes, quarterNotesPerBar) / quarterNotesPerBar) * numerator;
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auto bar = ((int) quarterNotes) / quarterNotesPerBar + 1;
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auto beat = ((int) beats) + 1;
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auto ticks = ((int) (fmod (beats, 1.0) * 960.0 + 0.5));
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return String::formatted ("%d|%d|%03d", bar, beat, ticks);
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}
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void updateTransportTextDisplay()
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{
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MemoryOutputStream displayText;
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displayText << "[" << SystemStats::getJUCEVersion() << "]\n"
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<< String (lastPosInfo.bpm, 2) << " bpm\n"
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<< lastPosInfo.timeSigNumerator << '/' << lastPosInfo.timeSigDenominator << "\n"
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<< timeToTimecodeString (lastPosInfo.timeInSeconds) << "\n"
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<< quarterNotePositionToBarsBeatsString (lastPosInfo.ppqPosition,
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lastPosInfo.timeSigNumerator,
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lastPosInfo.timeSigDenominator) << "\n";
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if (lastPosInfo.isRecording)
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displayText << "(recording)";
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else if (lastPosInfo.isPlaying)
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displayText << "(playing)";
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transportText.setText (displayText.toString(), dontSendNotification);
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}
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void updateTransportButtonsDisplay()
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{
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auto visible = iaaEffectProcessor.getPlayHead() != nullptr
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&& iaaEffectProcessor.getPlayHead()->canControlTransport();
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if (rewindButton.isVisible() != visible)
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{
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rewindButton.setVisible (visible);
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playButton.setVisible (visible);
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recordButton.setVisible (visible);
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}
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if (visible)
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{
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auto playColour = lastPosInfo.isPlaying ? Colours::green : defaultButtonColour;
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playButton.setColours (playColour, playColour, playColour);
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playButton.repaint();
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auto recordColour = lastPosInfo.isRecording ? Colours::red : defaultButtonColour;
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recordButton.setColours (recordColour, recordColour, recordColour);
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recordButton.repaint();
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}
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}
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void updateSwitchToHostDisplay()
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{
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PluginHostType hostType;
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auto visible = hostType.isInterAppAudioConnected();
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if (switchToHostButtonLabel.isVisible() != visible)
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{
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switchToHostButtonLabel.setVisible (visible);
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switchToHostButton.setVisible (visible);
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if (visible)
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{
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auto icon = hostType.getHostIcon ((int) buttonSize);
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switchToHostButton.setImages(false, true, true,
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icon, 1.0, Colours::transparentBlack,
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icon, 1.0, Colours::transparentBlack,
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icon, 1.0, Colours::transparentBlack);
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}
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}
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}
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IAAEffectProcessor& iaaEffectProcessor;
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AudioProcessorValueTreeState& parameters;
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const float buttonSize = 30.0f;
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const Colour defaultButtonColour = Colours::darkgrey;
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ShapeButton rewindButton {"Rewind", defaultButtonColour, defaultButtonColour, defaultButtonColour};
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ShapeButton playButton {"Play", defaultButtonColour, defaultButtonColour, defaultButtonColour};
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ShapeButton recordButton {"Record", defaultButtonColour, defaultButtonColour, defaultButtonColour};
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Slider gainSlider;
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AudioProcessorValueTreeState::SliderAttachment gainAttachment = { parameters, "gain", gainSlider };
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std::array<SimpleMeter, 2> meters;
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ImageButton switchToHostButton;
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Label transportText, switchToHostButtonLabel;
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AudioPlayHead::CurrentPositionInfo lastPosInfo;
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (IAAEffectEditor)
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};
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//==============================================================================
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AudioProcessorValueTreeState parameters;
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float previousGain = 0.0f;
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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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