Class AudioHardwareInput

include/LabSound/core/AudioSourceProvider.h:34–58

AudioHardwareInput allows us to expose an AudioSourceProvider for local/live audio input. If there is local/live audio input, we call set() with the audio input data every render quantum. `set()` is called in ... which is one or two frames above the actual hardware io.

// If there is local/live audio input, we call set() with the audio input data every render quantum.
// `set()` is called in ... which is one or two frames above the actual hardware io.
class AudioHardwareInput : public AudioSourceProvider
{
    AudioBus m_sourceBus;

public:
    AudioHardwareInput(int channelCount)
        : m_sourceBus(channelCount, AudioNode::ProcessingSizeInFrames)
    {
    }

    virtual ~AudioHardwareInput() {}

    void set(AudioBus * bus)
    {
        if (bus) m_sourceBus.copyFrom(*bus);
    }

    // Satisfy the AudioSourceProvider interface
    virtual void provideInput(AudioBus * destinationBus, int bufferSize)
    {
        bool isGood = destinationBus && destinationBus->length() == bufferSize && m_sourceBus.length() == bufferSize;
        //ASSERT(isGood);
        if (isGood) destinationBus->copyFrom(m_sourceBus);
    }
};

}  // lab