tracktion_HostedAudioDevice.h

Go to the documentation of this file.

 /*
    ,--.                     ,--.     ,--.  ,--.
  ,-'  '-.,--.--.,--,--.,---.|  |,-.,-'  '-.`--' ,---. ,--,--,      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 HostedAudioDeviceType;
 
class HostedAudioDeviceInterface
{
public:
    HostedAudioDeviceInterface (Engine&);
 
    //==============================================================================
    struct Parameters
    {
        double sampleRate = 44100.0;
 
        int blockSize = 512;
 
        bool useMidiDevices = false;
 
        int inputChannels = 2;
 
        int outputChannels = 2;
 
        juce::StringArray inputNames, outputNames;
    };
 
    void initialise (const Parameters&);
 
    // Call each time the sample rate or block size changes
    void prepareToPlay (double sampleRate, int blockSize);
 
    // Pass audio and midi buffers to the engine
    void processBlock (juce::AudioBuffer<float>& buffer, juce::MidiBuffer&);
 
    static bool isHostedMidiInputDevice (const MidiInputDevice&);
 
private:
    friend DeviceManager;
    friend class HostedAudioDevice;
    friend class HostedAudioDeviceType;
    friend class HostedMidiInputDevice;
    friend class HostedMidiOutputDevice;
 
    juce::StringArray getInputChannelNames();
    juce::StringArray getOutputChannelNames();
 
    MidiOutputDevice* createMidiOutput();
    MidiInputDevice* createMidiInput();
 
    Engine& engine;
    Parameters parameters;
    HostedAudioDeviceType* deviceType = nullptr;
 
    juce::Array<MidiOutputDevice*> midiOutputs;
    juce::Array<MidiInputDevice*> midiInputs;
 
    int maxChannels = 0;
 
    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (HostedAudioDeviceInterface)
};
 
}} // namespace tracktion { inline namespace engine