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/*
==============================================================================
InputDeviceSelector.h
Created: 18 Aug 2024 8:20:19pm
Author: binya
==============================================================================
*/
#pragma once
#include <JuceHeader.h>
#include "../Utilities/ComponentUtils.h"
/** A simple meter that displays the input level of the active audio device. */
struct DeviceLevelMeter final : CustomComponent, juce::Timer
{
explicit DeviceLevelMeter(juce::AudioDeviceManager& m) : manager(m)
{
startTimerHz(20);
inputLevelGetter = manager.getInputLevelGetter();
}
void timerCallback() override
{
if (!isVisible())
return;
auto newLevel = float(inputLevelGetter->getCurrentLevel());
if (std::abs(level - newLevel) > 0.005f)
level = newLevel;
auto* device = manager.getCurrentAudioDevice();
if (!device || !manager.getAudioDeviceSetup().inputChannels.countNumberOfSetBits())
level = 0;
repaint();
}
void paint(juce::Graphics& g) override
{
// Add a bit of skew
getLookAndFeel().drawLevelMeter(g, getWidth(), getHeight(), float(std::exp(std::log(level) / 3.0)));
}
juce::AudioDeviceManager& manager;
juce::AudioDeviceManager::LevelMeter::Ptr inputLevelGetter;
float level = 0;
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(DeviceLevelMeter)
};
/** A simple component that allows the user to select the input channels of the active audio device. */
class ChannelSelectorListBox final : public juce::ListBox, juce::ListBoxModel, public juce::ChangeListener
{
public:
ChannelSelectorListBox(juce::AudioDeviceManager& audioDeviceManager, int minNumInputChannels, int maxNumInputChannels, bool useStereoPairs);
~ChannelSelectorListBox() override;
void changeListenerCallback(juce::ChangeBroadcaster*) override;
int getNumRows() override;
void listBoxItemClicked(int row, const juce::MouseEvent& e) override;
void paintListBoxItem(int row, juce::Graphics& g, int width, int height, bool) override;
private:
void flipEnablement(int row) const;
void setBit(juce::BigInteger& ch, int index, bool set) const;
juce::String getNameForChannelPair(const juce::String& name1, const juce::String& name2) const;
//==============================================================================
juce::AudioDeviceManager& manager;
int minInputChannels, maxInputChannels;
bool useStereoPairs;
juce::AudioIODevice* device{ nullptr };
juce::StringArray channels;
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(ChannelSelectorListBox)
};
/** A cleaner version of JUCE's AudioDeviceSelectorComponent */
class InputDeviceSelector final : public CustomComponent, public juce::ChangeListener
{
public:
InputDeviceSelector(juce::AudioDeviceManager& deviceManager, int minInputChannelsToUse, int maxInputChannelsToUse, bool showChannelsAsStereoPairs);
~InputDeviceSelector() override;
private:
void paint(juce::Graphics& g) override;
void resized() override;
void lookAndFeelChanged() override;
/** Update the choosers once the device updates */
void changeListenerCallback(juce::ChangeBroadcaster* source) override;
/** Update the device manager when a user selects something */
void settingsChanged();
void updateEnablement();
//==============================================================================
juce::AudioDeviceManager& manager;
juce::AudioIODevice* inputDevice{ nullptr };
juce::Label titleLabel, warningLabel, settingsLabel, deviceTypeLabel, deviceLabel, channelsLabel, sampleRateLabel, bufferSizeLabel;
juce::ComboBox deviceTypeChooser, deviceChooser, sampleRateChooser, bufferSizeChooser;
DeviceLevelMeter levelMeter;
ChannelSelectorListBox channelSelector;
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(InputDeviceSelector)
};