Package org.freedesktop.gstreamer.app

Interface AppSrc.PushSampleCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

AppSrc

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 AppSrc.PushSampleCallback
extends FunctionPointer

Functional interface declaration of the PushSampleCallback callback.

See Also:

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

Method Summary

Modifier and Type	Method	Description
FlowReturn	run(@Nullable Sample sample)	Extract a buffer from the provided sample and adds the extracted buffer to the queue of buffers that the appsrc element will push to its source pad.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, java.lang.foreign.MemorySegment) method.
default int	upcall(MemorySegment sourceAppSrc, MemorySegment sample)	The upcall method is called from native code.

Method Details

run

FlowReturn run(@Nullable Sample sample)

Extract a buffer from the provided sample and adds the extracted buffer to the queue of buffers that the appsrc element will push to its source pad. This function set the appsrc caps based on the caps in the sample and reset the caps if they change. Only the caps and the buffer of the provided sample are used and not for example the segment in the sample.

This function does not take ownership of the sample, but it takes a reference so the sample can be unreffed at any time after calling this function.

When the block property is TRUE, this function can block until free space becomes available in the queue.

Since:

1.6

upcall

default int upcall(MemorySegment sourceAppSrc,
 MemorySegment sample)

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