Package org.freedesktop.gstreamer.video

Interface VideoFormatPack

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 VideoFormatPack
extends FunctionPointer

Functional interface declaration of the VideoFormatPack callback.

See Also:

• run(org.freedesktop.gstreamer.video.VideoFormatInfo, java.util.Set<org.freedesktop.gstreamer.video.VideoPackFlags>, java.lang.foreign.MemorySegment, int, java.lang.foreign.MemorySegment, java.lang.foreign.MemorySegment, java.util.Set<org.freedesktop.gstreamer.video.VideoChromaSite>, int, int)

Method Summary

Modifier and Type	Method	Description
void	run(VideoFormatInfo info, Set<VideoPackFlags> flags, @Nullable MemorySegment src, int sstride, @Nullable MemorySegment data, MemorySegment stride, Set<VideoChromaSite> chromaSite, int y, int width)	Packs width pixels from src to the given planes and strides in the format info.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, int, java.lang.foreign.MemorySegment, int, java.lang.foreign.MemorySegment, java.lang.foreign.MemorySegment, int, int, int) method.
default void	upcall(MemorySegment info, int flags, MemorySegment src, int sstride, MemorySegment data, MemorySegment stride, int chromaSite, int y, int width)	The upcall method is called from native code.

Method Details

run

void run(VideoFormatInfo info,
 Set<VideoPackFlags> flags,
 @Nullable
 @Nullable MemorySegment src,
 int sstride,
 @Nullable
 @Nullable MemorySegment data,
 MemorySegment stride,
 Set<VideoChromaSite> chromaSite,
 int y,
 int width)

Packs width pixels from src to the given planes and strides in the format info. The pixels from source have each component interleaved and will be packed into the planes in data.

This function operates on pack_lines lines, meaning that src should contain at least pack_lines lines with a stride of sstride and y should be a multiple of pack_lines.

Subsampled formats will use the horizontally and vertically cosited component from the source. Subsampling should be performed before packing.

Because this function does not have a x coordinate, it is not possible to pack pixels starting from an unaligned position. For tiled images this means that packing should start from a tile coordinate. For subsampled formats this means that a complete pixel needs to be packed.

upcall

default void upcall(MemorySegment info,
 int flags,
 MemorySegment src,
 int sstride,
 MemorySegment data,
 MemorySegment stride,
 int chromaSite,
 int y,
 int width)

The upcall method is called from native code. The parameters are marshaled and run(org.freedesktop.gstreamer.video.VideoFormatInfo, java.util.Set<org.freedesktop.gstreamer.video.VideoPackFlags>, java.lang.foreign.MemorySegment, int, java.lang.foreign.MemorySegment, java.lang.foreign.MemorySegment, java.util.Set<org.freedesktop.gstreamer.video.VideoChromaSite>, int, int) is executed.

toCallback

default MemorySegment toCallback(Arena arena)

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

Specified by:

toCallback in interface FunctionPointer

Parameters:

arena - the function pointer will be allocated in this arena

Returns:

the native function pointer