Package org.freedesktop.gstreamer.video

Class VideoRegionOfInterestMeta

java.lang.Object

org.javagi.base.ProxyInstance

org.freedesktop.gstreamer.video.VideoRegionOfInterestMeta

All Implemented Interfaces:

Proxy

@Generated("org.javagi.JavaGI")
public class VideoRegionOfInterestMeta
extends ProxyInstance

Extra buffer metadata describing an image region of interest

Constructor Summary

Constructors

Constructor	Description
VideoRegionOfInterestMeta()	Allocate a new VideoRegionOfInterestMeta.
VideoRegionOfInterestMeta(Arena arena)	Allocate a new VideoRegionOfInterestMeta.
VideoRegionOfInterestMeta(MemorySegment address)	Create a VideoRegionOfInterestMeta proxy instance for the provided memory address.
VideoRegionOfInterestMeta(Meta meta, Quark roiType, int id, int parentId, int x, int y, int w, int h, List<MemorySegment> params)	Allocate a new VideoRegionOfInterestMeta with the fields set to the provided values.
VideoRegionOfInterestMeta(Meta meta, Quark roiType, int id, int parentId, int x, int y, int w, int h, List<MemorySegment> params, Arena arena)	Allocate a new VideoRegionOfInterestMeta with the fields set to the provided values.

Method Summary

Modifier and Type	Method	Description
void	addParam(Structure s)	Attach element-specific parameters to this VideoRegionOfInterestMeta meant to be used by downstream elements which may handle this ROI.
static MetaInfo	getInfo()
static MemoryLayout	getMemoryLayout()	The memory layout of the native struct.
@Nullable Structure	getParam(String name)	Retrieve the parameter for this VideoRegionOfInterestMeta having name as structure name, or null if there is none.
int	readH()	Read the value of the field h.
int	readId()	Read the value of the field id.
@Nullable Meta	readMeta()	Read the value of the field meta.
List<MemorySegment>	readParams()	Read the value of the field params.
int	readParentId()	Read the value of the field parent_id.
Quark	readRoiType()	Read the value of the field roi_type.
int	readW()	Read the value of the field w.
int	readX()	Read the value of the field x.
int	readY()	Read the value of the field y.
void	writeH(int h)	Write a value in the field h.
void	writeId(int id)	Write a value in the field id.
void	writeMeta(@Nullable Meta meta)	Write a value in the field meta.
void	writeParams(List<MemorySegment> params)	Write a value in the field params.
void	writeParentId(int parentId)	Write a value in the field parent_id.
void	writeRoiType(Quark roiType)	Write a value in the field roi_type.
void	writeW(int w)	Write a value in the field w.
void	writeX(int x)	Write a value in the field x.
void	writeY(int y)	Write a value in the field y.

Methods inherited from class org.javagi.base.ProxyInstance

equals, handle, hashCode

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Details

VideoRegionOfInterestMeta

public VideoRegionOfInterestMeta(MemorySegment address)

Create a VideoRegionOfInterestMeta proxy instance for the provided memory address.

Parameters:

address - the memory address of the native object

VideoRegionOfInterestMeta

public VideoRegionOfInterestMeta(Arena arena)

Allocate a new VideoRegionOfInterestMeta.

Parameters:

arena - to control the memory allocation scope

VideoRegionOfInterestMeta

public VideoRegionOfInterestMeta()

Allocate a new VideoRegionOfInterestMeta. The memory is allocated with Arena.ofAuto().

VideoRegionOfInterestMeta

public VideoRegionOfInterestMeta(Meta meta,
 Quark roiType,
 int id,
 int parentId,
 int x,
 int y,
 int w,
 int h,
 List<MemorySegment> params,
 Arena arena)

Allocate a new VideoRegionOfInterestMeta with the fields set to the provided values.

Parameters:

meta - value for the field meta

roiType - value for the field roiType

id - value for the field id

parentId - value for the field parentId

x - value for the field x

y - value for the field y

w - value for the field w

h - value for the field h

params - value for the field params

arena - to control the memory allocation scope

VideoRegionOfInterestMeta

public VideoRegionOfInterestMeta(Meta meta,
 Quark roiType,
 int id,
 int parentId,
 int x,
 int y,
 int w,
 int h,
 List<MemorySegment> params)

Allocate a new VideoRegionOfInterestMeta with the fields set to the provided values. The memory is allocated with Arena.ofAuto().

Parameters:

meta - value for the field meta

roiType - value for the field roiType

id - value for the field id

parentId - value for the field parentId

x - value for the field x

y - value for the field y

w - value for the field w

h - value for the field h

params - value for the field params

Method Details

getMemoryLayout

public static MemoryLayout getMemoryLayout()

The memory layout of the native struct.

Returns:

the memory layout

readMeta

public @Nullable Meta readMeta()

Read the value of the field meta.

Returns:

The value of the field meta

writeMeta

public void writeMeta(@Nullable Meta meta)

Write a value in the field meta.

Parameters:

meta - The new value for the field meta

readRoiType

public Quark readRoiType()

Read the value of the field roi_type.

Returns:

The value of the field roi_type

writeRoiType

public void writeRoiType(Quark roiType)

Write a value in the field roi_type.

Parameters:

roiType - The new value for the field roi_type

readId

public int readId()

Read the value of the field id.

Returns:

The value of the field id

writeId

public void writeId(int id)

Write a value in the field id.

Parameters:

id - The new value for the field id

readParentId

public int readParentId()

Read the value of the field parent_id.

Returns:

The value of the field parent_id

writeParentId

public void writeParentId(int parentId)

Write a value in the field parent_id.

Parameters:

parentId - The new value for the field parent_id

readX

public int readX()

Read the value of the field x.

Returns:

The value of the field x

writeX

public void writeX(int x)

Write a value in the field x.

Parameters:

x - The new value for the field x

readY

public int readY()

Read the value of the field y.

Returns:

The value of the field y

writeY

public void writeY(int y)

Write a value in the field y.

Parameters:

y - The new value for the field y

readW

public int readW()

Read the value of the field w.

Returns:

The value of the field w

writeW

public void writeW(int w)

Write a value in the field w.

Parameters:

w - The new value for the field w

readH

public int readH()

Read the value of the field h.

Returns:

The value of the field h

writeH

public void writeH(int h)

Write a value in the field h.

Parameters:

h - The new value for the field h

readParams

public List<MemorySegment> readParams()

Read the value of the field params.

Returns:

The value of the field params

writeParams

public void writeParams(List<MemorySegment> params)

Write a value in the field params.

Parameters:

params - The new value for the field params

getInfo

public static MetaInfo getInfo()

addParam

public void addParam(Structure s)

Attach element-specific parameters to this VideoRegionOfInterestMeta meant to be used by downstream elements which may handle this ROI. The name of s is used to identify the element these parameters are meant for.

This is typically used to tell encoders how they should encode this specific region. For example, a structure named "roi/x264enc" could be used to give the QP offsets this encoder should use when encoding the region described in meta. Multiple parameters can be defined for the same meta so different encoders can be supported by cross platform applications).

Parameters:

s - a GstStructure

Since:

1.14

getParam

public @Nullable Structure getParam(String name)

Retrieve the parameter for this VideoRegionOfInterestMeta having name as structure name, or null if there is none.

Parameters:

name - a name.

Returns:

a GstStructure

Since:

1.14