OutputHandler

public class OutputHandler

Base class for handling MediaPipe task graph outputs.

Nested Classes

interface	OutputHandler.OutputPacketConverter<OutputT extends TaskResult, InputT>		Interface for converting MediaPipe graph output ERROR(/Packet)s to task result object and task input object.
interface	OutputHandler.ProgressListener<OutputT>		Interface for the customizable MediaPipe task result listener that receives partial task updates until it is invoked with `done` set to true.
interface	OutputHandler.PureResultListener<OutputT extends TaskResult>		Interface for the customizable MediaPipe task result listener that can only retrieve task result objects.
interface	OutputHandler.ResultListener<OutputT extends TaskResult, InputT>		Interface for the customizable MediaPipe task result listener that can retrieve both task result objects and the corresponding input data.
interface	OutputHandler.ValueListener<OutputT>		Interface for the customizable MediaPipe task result listener that only receives a task's output value.

Public Constructors

OutputHandler()

Public Methods

long	getLatestOutputTimestamp()
OutputT	retrieveCachedTaskResult()
void	setErrorListener(ErrorListener listener) Sets a callback to be invoked when exceptions are thrown from the task graph.
void	setHandleTimestampBoundChanges(boolean handleTimestampBoundChanges) Sets whether the output handler should react to the timestamp bound changes that are represented as empty output ERROR(/Packet)s.
void	setOutputPacketConverter(OutputPacketConverter<OutputT, InputT> converter) Sets a callback to be invoked to convert a ERROR(/Packet) list to a task result object and a task input object.
void	setResultListener(ResultListener<OutputT, InputT> listener) Sets a callback to be invoked when task result objects become available.

Inherited Methods

From class java.lang.Object

boolean	equals(Object arg0)
final Class<?>	getClass()
int	hashCode()
final void	notify()
final void	notifyAll()
String	toString()
final void	wait(long arg0, int arg1)
final void	wait(long arg0)
final void	wait()

Public Constructors

public OutputHandler ()

Public Methods

public long getLatestOutputTimestamp ()

public OutputT retrieveCachedTaskResult ()

public void setErrorListener (ErrorListener listener)

Sets a callback to be invoked when exceptions are thrown from the task graph.

Parameters

listener	The user-defined ErrorListener callback.

public void setHandleTimestampBoundChanges (boolean handleTimestampBoundChanges)

Sets whether the output handler should react to the timestamp bound changes that are represented as empty output ERROR(/Packet)s.

Parameters

handleTimestampBoundChanges	A boolean value.

public void setOutputPacketConverter (OutputPacketConverter<OutputT, InputT> converter)

Sets a callback to be invoked to convert a ERROR(/Packet) list to a task result object and a task input object.

Parameters

converter	the task-specific OutputHandler.OutputPacketConverter callback.

public void setResultListener (ResultListener<OutputT, InputT> listener)

Sets a callback to be invoked when task result objects become available.

Parameters

listener	the user-defined OutputHandler.ResultListener callback.