Interface MainFunc

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("org.javagi.JavaGI")
public interface MainFunc
extends FunctionPointer

Functional interface declaration of the MainFunc callback.

See Also:

• run(String[])

Method Summary

Modifier and Type	Method	Description
int	run(@Nullable String @Nullable [] argv)	Represents a simple pointer to the main() function of a program.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(int, MemorySegment, MemorySegment) method.
default int	upcall(int argc, MemorySegment argv, MemorySegment userData)	The upcall method is called from native code.

Method Details

run

int run(@Nullable String @Nullable [] argv)

Represents a simple pointer to the main() function of a program. It is used to pass that function along with its arguments to gst_macos_main(), which ensures correct behaviour of various GStreamer elements (e.g glimagesink) on macOS.

Parameters:

argv - an array of arguments passed to the main function

upcall

default int upcall(int argc,
 MemorySegment argv,
 MemorySegment userData)

The upcall method is called from native code. The parameters are marshaled and run(String[]) is executed.

toCallback

default MemorySegment toCallback(Arena arena)

Creates a native function pointer to the upcall(int, MemorySegment, MemorySegment) method.

Specified by:

toCallback in interface FunctionPointer

Parameters:

arena - the arena in which the function pointer is allocated

Returns:

the native function pointer