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Description

ILckAudioSource defines the contract for custom audio sources in LCK. As of v1.2.0, developers can implement this interface to manually provide game audio to LCK. This is useful when integrating with third-party audio middleware (such as FMOD or Wwise) or when Unity’s built-in audio pipeline does not represent the full mix you want to capture.
Microphone audio is still collected separately by LCK and is not replaced by custom sources.

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Supplying Custom Audio

When implementing ILckAudioSource, keep the following requirements in mind:
  • Audio format: stereo, interleaved floats, 48 kHz sample rate
  • Placement: attach your component next to either:
    • A Unity AudioListener, or
    • An LckAudioMarker
  • Examples: see built-in implementations such as:
    • LckAudioListener
    • FMOD variant
    • Wwise variant
This flexibility allows you to integrate external audio systems or customise exactly what LCK captures for streaming and recording.

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Usage

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Example: Supplying Audio from a Custom Source

public class MyCustomAudioSource : MonoBehaviour, ILckAudioSource
{
    public void GetAudioData(ILckAudioSource.AudioDataCallbackDelegate callback)
    {
        // Fill an AudioBuffer with your audio data here
        AudioBuffer buffer = MyAudioEngine.FetchAudioBuffer();
        callback(buffer);
    }

    public void EnableCapture()
    {
        Debug.Log("Custom audio capture enabled.");
    }

    public void DisableCapture()
    {
        Debug.Log("Custom audio capture disabled.");
    }

    public bool IsCapturing() => true; // return whether actively supplying data
}
Attach this component next to an AudioListener or LckAudioMarker to begin supplying custom game audio.

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References

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Methods

MethodReturnsDescription
GetAudioData(AudioDataCallbackDelegate callback)voidCalled by LCK to request audio data. Supply an AudioBuffer with interleaved stereo float samples at 48kHz.
EnableCapture()voidActivates audio capture for this source.
DisableCapture()voidDeactivates audio capture for this source.
IsCapturing()boolReturns whether this audio source is currently supplying audio data.