tracktion_WaveOutputDevice.h

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 /*
    ,--.                     ,--.     ,--.  ,--.
  ,-'  '-.,--.--.,--,--.,---.|  |,-.,-'  '-.`--' ,---. ,--,--,      Copyright 2024
  '-.  .-'|  .--' ,-.  | .--'|     /'-.  .-',--.| .-. ||      \   Tracktion Software
    |  |  |  |  \ '-'  \ `--.|  \  \  |  |  |  |' '-' '|  ||  |       Corporation
    `---' `--'   `--`--'`---'`--'`--' `---' `--' `---' `--''--'    www.tracktion.com
 
    Tracktion Engine uses a GPL/commercial licence - see LICENCE.md for details.
*/
 
namespace tracktion { inline namespace engine
{
 
class WaveOutputDevice  : public OutputDevice
{
public:
    WaveOutputDevice (Engine&, const WaveDeviceDescription&);
    ~WaveOutputDevice() override;
 
    void resetToDefault();
    void setEnabled (bool) override;
    const std::vector<ChannelIndex>& getChannels() const noexcept   { return deviceChannels; }
    const juce::AudioChannelSet& getChannelSet() const noexcept     { return channelSet; }
 
    void reverseChannels (bool);
    bool isReversed() const         { return leftRightReversed; }
 
    void setDithered (bool);
    bool isDithered() const         { return ditheringEnabled; }
 
    int getLeftChannel() const;
 
    int getRightChannel() const;
 
    bool isStereoPair() const;
 
    void setStereoPair (bool);
 
    WaveOutputDeviceInstance* createInstance (EditPlaybackContext&);
 
protected:
    juce::String openDevice() override;
    void closeDevice() override;
 
private:
    friend class DeviceManager;
    friend class WaveOutputDeviceInstance;
 
    const std::vector<ChannelIndex> deviceChannels;
    const juce::AudioChannelSet channelSet;
    bool ditheringEnabled, leftRightReversed;
 
    void loadProps();
    void saveProps();
 
    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (WaveOutputDevice)
};
 
//==============================================================================
class WaveOutputDeviceInstance   : public OutputDeviceInstance
{
public:
    WaveOutputDeviceInstance (WaveOutputDevice&, EditPlaybackContext&);
 
    void prepareToPlay (double sampleRate, int blockSizeSamples);
 
protected:
    Ditherer ditherers[2];
    MidiMessageArray midiBuffer;
    juce::AudioBuffer<float> outputBuffer;
 
    WaveOutputDevice& getWaveOutput() const     { return static_cast<WaveOutputDevice&> (owner); }
 
    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (WaveOutputDeviceInstance)
};
 
}} // namespace tracktion { inline namespace engine