Interface AllocationMetaParamsAggregator

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 AllocationMetaParamsAggregator
extends FunctionPointer

Functional interface declaration of the AllocationMetaParamsAggregator callback.

See Also:

• run(Structure[], Structure, Structure)

Method Summary

Modifier and Type	Method	Description
boolean	run(Structure[] aggregatedParams, Structure params0, Structure params1)	The aggregator function will combine the parameters from params0 and param1 and write the result back into aggregatedParams.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(MemorySegment, MemorySegment, MemorySegment) method.
default int	upcall(MemorySegment aggregatedParams, MemorySegment params0, MemorySegment params1)	The upcall method is called from native code.

Method Details

run

boolean run(Structure[] aggregatedParams,
 Structure params0,
 Structure params1)

The aggregator function will combine the parameters from params0 and param1 and write the result back into aggregatedParams.

Parameters:

aggregatedParams - This structure will be updated with the combined parameters from both params0 and params1.

params0 - a GstStructure containing the new parameters to be aggregated.

params1 - a GstStructure containing the new parameters to be aggregated.

Returns:

true if the parameters were successfully aggregated, false otherwise.

Since:

1.26

upcall

default int upcall(MemorySegment aggregatedParams,
 MemorySegment params0,
 MemorySegment params1)

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

toCallback

default MemorySegment toCallback(Arena arena)

Creates a native function pointer to the upcall(MemorySegment, 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