Package org.freedesktop.gstreamer.base

Interface TypeFindHelperGetRangeFunction

All Superinterfaces:

FunctionPointer

Functional Interface:

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

@FunctionalInterface
@Generated("io.github.jwharm.JavaGI")
public interface TypeFindHelperGetRangeFunction
extends FunctionPointer

Functional interface declaration of the TypeFindHelperGetRangeFunction callback.

See Also:

• run(org.freedesktop.gstreamer.gst.GstObject, org.freedesktop.gstreamer.gst.GstObject, long, int, io.github.jwharm.javagi.base.Out<org.freedesktop.gstreamer.gst.Buffer>)

Method Summary

Modifier and Type	Method	Description
FlowReturn	run(GstObject obj, @Nullable GstObject parent, long offset, int length, Out<Buffer> buffer)	This function will be called by gst_type_find_helper_get_range() when typefinding functions request to peek at the data of a stream at certain offsets.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, java.lang.foreign.MemorySegment, long, int, java.lang.foreign.MemorySegment) method.
default int	upcall(MemorySegment obj, MemorySegment parent, long offset, int length, MemorySegment buffer)	The upcall method is called from native code.

Method Details

run

FlowReturn run(GstObject obj,
 @Nullable
 @Nullable GstObject parent,
 long offset,
 int length,
 Out<Buffer> buffer)

This function will be called by gst_type_find_helper_get_range() when typefinding functions request to peek at the data of a stream at certain offsets. If this function returns GST_FLOW_OK, the result buffer will be stored in buffer. The contents of buffer is invalid for any other return value.

This function is supposed to behave exactly like a GstPadGetRangeFunction.

upcall

default int upcall(MemorySegment obj,
 MemorySegment parent,
 long offset,
 int length,
 MemorySegment buffer)

The upcall method is called from native code. The parameters are marshaled and run(org.freedesktop.gstreamer.gst.GstObject, org.freedesktop.gstreamer.gst.GstObject, long, int, io.github.jwharm.javagi.base.Out<org.freedesktop.gstreamer.gst.Buffer>) is executed.

toCallback

default MemorySegment toCallback(Arena arena)

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

Specified by:

toCallback in interface FunctionPointer

Parameters:

arena - the function pointer will be allocated in this arena

Returns:

the native function pointer