Package org.freedesktop.gstreamer.gst

Interface Bus.SyncMessageCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

Bus

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public static interface Bus.SyncMessageCallback
extends FunctionPointer

Functional interface declaration of the SyncMessageCallback callback.

See Also:

• run(org.freedesktop.gstreamer.gst.Message)

Method Summary

Modifier and Type	Method	Description
void	run(@Nullable Message message)	A message has been posted on the bus.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, java.lang.foreign.MemorySegment) method.
default void	upcall(MemorySegment sourceBus, MemorySegment message)	The upcall method is called from native code.

Method Details

run

void run(@Nullable Message message)

A message has been posted on the bus. This signal is emitted from the thread that posted the message so one has to be careful with locking.

This signal will not be emitted by default, you have to call gst_bus_enable_sync_message_emission() before.

upcall

default void upcall(MemorySegment sourceBus,
 MemorySegment message)

The upcall method is called from native code. The parameters are marshaled and run(org.freedesktop.gstreamer.gst.Message) is executed.

toCallback

default MemorySegment toCallback(Arena arena)

Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, java.lang.foreign.MemorySegment) method.

Specified by:

toCallback in interface FunctionPointer

Parameters:

arena - the arena in which the function pointer is allocated

Returns:

the native function pointer