VideoGraph.Listener

Kotlin |Java

interface VideoGraph.Listener

Listener for video frame processing events.

Summary

Public functions
`Unit`	`onEnded(finalFramePresentationTimeUs: Long)` Called after the `VideoGraph` has rendered its final output frame.
`Unit`	`onError(exception: VideoFrameProcessingException!)` Called when an exception occurs during video frame processing.
`Unit`	`onOutputFrameAvailableForRendering( framePresentationTimeUs: Long, isRedrawnFrame: Boolean )` Called when an output frame with the given `framePresentationTimeUs` becomes available for rendering.
`Unit`	`onOutputFrameRateChanged(frameRate: Float)` Called when the output frame rate changes.
`Unit`	`onOutputSizeChanged(width: Int, height: Int)` Called when the output size changes.

fun onEnded(finalFramePresentationTimeUs: Long): Unit

Called after the VideoGraph has rendered its final output frame.

Parameters
`finalFramePresentationTimeUs: Long`	The timestamp of the last output frame, in microseconds.

fun onError(exception: VideoFrameProcessingException!): Unit

Called when an exception occurs during video frame processing.

If this is called, the calling VideoGraph must immediately be released.

fun onOutputFrameAvailableForRendering(
    framePresentationTimeUs: Long,
    isRedrawnFrame: Boolean
): Unit

Called when an output frame with the given framePresentationTimeUs becomes available for rendering.

Parameters
`framePresentationTimeUs: Long`	The presentation time of the frame, in microseconds.
`isRedrawnFrame: Boolean`	Whether the frame is a frame that is `redrawn`, redrawn frames are rendered directly thus `renderOutputFrame` must not be called on such frames.

fun onOutputFrameRateChanged(frameRate: Float): Unit

Called when the output frame rate changes.

Parameters
`frameRate: Float`	The output frame rate in frames per second, or `NO_VALUE` if unknown.

fun onOutputSizeChanged(width: Int, height: Int): Unit

Called when the output size changes.

Parameters
`width: Int`	The new output width in pixels.
`height: Int`	The new output width in pixels.