Package org.freedesktop.gstreamer.video

Class VideoInfo

java.lang.Object

io.github.jwharm.javagi.base.ProxyInstance

org.freedesktop.gstreamer.video.VideoInfo

All Implemented Interfaces:

Proxy

@Generated("io.github.jwharm.JavaGI")
public class VideoInfo
extends ProxyInstance

Information describing image properties. This information can be filled in from GstCaps with gst_video_info_from_caps(). The information is also used to store the specific video info when mapping a video frame with gst_video_frame_map().

Use the provided macros to access the info in this structure.

Constructor Summary

Constructors

Constructor	Description
VideoInfo()	Allocate a new GstVideoInfo that is also initialized with gst_video_info_init().
VideoInfo(MemorySegment address)	Create a VideoInfo proxy instance for the provided memory address.

Method Summary

Modifier and Type	Method	Description
boolean	align(VideoAlignment align)	Adjust the offset and stride fields in this VideoInfo so that the padding and stride alignment in align is respected.
boolean	alignFull(VideoAlignment align, @Nullable Out<Long> planeSize)	Extra padding will be added to the right side when stride alignment padding is required and align will be updated with the new padding values.
boolean	convert(Format srcFormat, long srcValue, Format destFormat, Out<Long> destValue)	Converts among various GstFormat types.
VideoInfo	copy()	Copy a GstVideoInfo structure.
void	free()	Free a GstVideoInfo structure previously allocated with gst_video_info_new() or gst_video_info_copy().
static VideoInfo	fromCaps(Caps caps)	Parse caps to generate a GstVideoInfo.
static MemoryLayout	getMemoryLayout()	The memory layout of the native struct.
static Type	getType()	Get the GType of the VideoInfo class
static void	init(VideoInfo info)	Initialize info with default values.
boolean	isEqual(VideoInfo other)	Compares two GstVideoInfo and returns whether they are equal or not
Set<VideoChromaSite>	readChromaSite()	Read the value of the field chroma_site.
VideoColorimetry	readColorimetry()	Read the value of the field colorimetry.
VideoFormatInfo	readFinfo()	Read the value of the field finfo.
Set<VideoFlags>	readFlags()	Read the value of the field flags.
int	readFpsD()	Read the value of the field fps_d.
int	readFpsN()	Read the value of the field fps_n.
int	readHeight()	Read the value of the field height.
VideoInterlaceMode	readInterlaceMode()	Read the value of the field interlace_mode.
long[]	readOffset()	Read the value of the field offset.
int	readParD()	Read the value of the field par_d.
int	readParN()	Read the value of the field par_n.
long	readSize()	Read the value of the field size.
int[]	readStride()	Read the value of the field stride.
int	readViews()	Read the value of the field views.
int	readWidth()	Read the value of the field width.
boolean	setFormat(VideoFormat format, int width, int height)	Set the default info for a video frame of format and width and height.
boolean	setInterlacedFormat(VideoFormat format, VideoInterlaceMode mode, int width, int height)	Same as gst_video_info_set_format but also allowing to set the interlaced mode.
Caps	toCaps()	Convert the values of this VideoInfo into a GstCaps.
static boolean	withCaps(VideoInfo info, Caps caps)	Parse caps and update info.
void	writeChromaSite(Set<VideoChromaSite> chromaSite)	Write a value in the field chroma_site.
void	writeColorimetry(VideoColorimetry colorimetry)	Write a value in the field colorimetry.
void	writeFinfo(VideoFormatInfo finfo)	Write a value in the field finfo.
void	writeFlags(Set<VideoFlags> flags)	Write a value in the field flags.
void	writeFpsD(int fpsD)	Write a value in the field fps_d.
void	writeFpsN(int fpsN)	Write a value in the field fps_n.
void	writeHeight(int height)	Write a value in the field height.
void	writeInterlaceMode(VideoInterlaceMode interlaceMode)	Write a value in the field interlace_mode.
void	writeOffset(long[] offset, Arena _arena)	Write a value in the field offset.
void	writeParD(int parD)	Write a value in the field par_d.
void	writeParN(int parN)	Write a value in the field par_n.
void	writeSize(long size)	Write a value in the field size.
void	writeStride(int[] stride, Arena _arena)	Write a value in the field stride.
void	writeViews(int views)	Write a value in the field views.
void	writeWidth(int width)	Write a value in the field width.

Methods inherited from class io.github.jwharm.javagi.base.ProxyInstance

equals, handle, hashCode

Methods inherited from class java.lang.Object

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

Constructor Details

VideoInfo

public VideoInfo(MemorySegment address)

Create a VideoInfo proxy instance for the provided memory address.

Parameters:

address - the memory address of the native object

VideoInfo

public VideoInfo()

Allocate a new GstVideoInfo that is also initialized with gst_video_info_init().

Method Details

getType

public static Type getType()

Get the GType of the VideoInfo class

Returns:

the GType

getMemoryLayout

public static MemoryLayout getMemoryLayout()

The memory layout of the native struct.

Returns:

the memory layout

readFinfo

public VideoFormatInfo readFinfo()

Read the value of the field finfo.

Returns:

The value of the field finfo

writeFinfo

public void writeFinfo(VideoFormatInfo finfo)

Write a value in the field finfo.

Parameters:

finfo - The new value for the field finfo

readInterlaceMode

public VideoInterlaceMode readInterlaceMode()

Read the value of the field interlace_mode.

Returns:

The value of the field interlace_mode

writeInterlaceMode

public void writeInterlaceMode(VideoInterlaceMode interlaceMode)

Write a value in the field interlace_mode.

Parameters:

interlaceMode - The new value for the field interlace_mode

readFlags

public Set<VideoFlags> readFlags()

Read the value of the field flags.

Returns:

The value of the field flags

writeFlags

public void writeFlags(Set<VideoFlags> flags)

Write a value in the field flags.

Parameters:

flags - The new value for the field flags

readWidth

public int readWidth()

Read the value of the field width.

Returns:

The value of the field width

writeWidth

public void writeWidth(int width)

Write a value in the field width.

Parameters:

width - The new value for the field width

readHeight

public int readHeight()

Read the value of the field height.

Returns:

The value of the field height

writeHeight

public void writeHeight(int height)

Write a value in the field height.

Parameters:

height - The new value for the field height

readSize

public long readSize()

Read the value of the field size.

Returns:

The value of the field size

writeSize

public void writeSize(long size)

Write a value in the field size.

Parameters:

size - The new value for the field size

readViews

public int readViews()

Read the value of the field views.

Returns:

The value of the field views

writeViews

public void writeViews(int views)

Write a value in the field views.

Parameters:

views - The new value for the field views

readChromaSite

public Set<VideoChromaSite> readChromaSite()

Read the value of the field chroma_site.

Returns:

The value of the field chroma_site

writeChromaSite

public void writeChromaSite(Set<VideoChromaSite> chromaSite)

Write a value in the field chroma_site.

Parameters:

chromaSite - The new value for the field chroma_site

readColorimetry

public VideoColorimetry readColorimetry()

Read the value of the field colorimetry.

Returns:

The value of the field colorimetry

writeColorimetry

public void writeColorimetry(VideoColorimetry colorimetry)

Write a value in the field colorimetry.

Parameters:

colorimetry - The new value for the field colorimetry

readParN

public int readParN()

Read the value of the field par_n.

Returns:

The value of the field par_n

writeParN

public void writeParN(int parN)

Write a value in the field par_n.

Parameters:

parN - The new value for the field par_n

readParD

public int readParD()

Read the value of the field par_d.

Returns:

The value of the field par_d

writeParD

public void writeParD(int parD)

Write a value in the field par_d.

Parameters:

parD - The new value for the field par_d

readFpsN

public int readFpsN()

Read the value of the field fps_n.

Returns:

The value of the field fps_n

writeFpsN

public void writeFpsN(int fpsN)

Write a value in the field fps_n.

Parameters:

fpsN - The new value for the field fps_n

readFpsD

public int readFpsD()

Read the value of the field fps_d.

Returns:

The value of the field fps_d

writeFpsD

public void writeFpsD(int fpsD)

Write a value in the field fps_d.

Parameters:

fpsD - The new value for the field fps_d

readOffset

public long[] readOffset()

Read the value of the field offset.

Returns:

The value of the field offset

writeOffset

public void writeOffset(long[] offset,
 Arena _arena)

Write a value in the field offset.

Parameters:

offset - The new value for the field offset

_arena - to control the memory allocation scope

readStride

public int[] readStride()

Read the value of the field stride.

Returns:

The value of the field stride

writeStride

public void writeStride(int[] stride,
 Arena _arena)

Write a value in the field stride.

Parameters:

stride - The new value for the field stride

_arena - to control the memory allocation scope

fromCaps

public static VideoInfo fromCaps(Caps caps)

Parse caps to generate a GstVideoInfo.

Parameters:

caps - a GstCaps

Returns:

A GstVideoInfo, or null if caps couldn't be parsed

withCaps

public static boolean withCaps(VideoInfo info,
 Caps caps)

Parse caps and update info.

Parameters:

info - GstVideoInfo

caps - a GstCaps

Returns:

TRUE if caps could be parsed

init

public static void init(VideoInfo info)

Initialize info with default values.

Parameters:

info - a GstVideoInfo

align

public boolean align(VideoAlignment align)

Adjust the offset and stride fields in this VideoInfo so that the padding and stride alignment in align is respected.

Extra padding will be added to the right side when stride alignment padding is required and align will be updated with the new padding values.

Parameters:

align - alignment parameters

Returns:

false if alignment could not be applied, e.g. because the size of a frame can't be represented as a 32 bit integer (Since: 1.12)

alignFull

public boolean alignFull(VideoAlignment align,
 @Nullable
 @Nullable Out<Long> planeSize)

Extra padding will be added to the right side when stride alignment padding is required and align will be updated with the new padding values.

This variant of gst_video_info_align() provides the updated size, in bytes, of each video plane after the alignment, including all horizontal and vertical paddings.

In case of GST_VIDEO_INTERLACE_MODE_ALTERNATE info, the returned sizes are the ones used to hold a single field, not the full frame.

Parameters:

align - alignment parameters

planeSize - array used to store the plane sizes

Returns:

false if alignment could not be applied, e.g. because the size of a frame can't be represented as a 32 bit integer

convert

public boolean convert(Format srcFormat,
 long srcValue,
 Format destFormat,
 Out<Long> destValue)

Converts among various GstFormat types. This function handles GST_FORMAT_BYTES, GST_FORMAT_TIME, and GST_FORMAT_DEFAULT. For raw video, GST_FORMAT_DEFAULT corresponds to video frames. This function can be used to handle pad queries of the type GST_QUERY_CONVERT.

Parameters:

srcFormat - GstFormat of the srcValue

srcValue - value to convert

destFormat - GstFormat of the destValue

destValue - pointer to destination value

Returns:

TRUE if the conversion was successful.

copy

public VideoInfo copy()

Copy a GstVideoInfo structure.

Returns:

a new GstVideoInfo. free with gst_video_info_free.

free

public void free()

Free a GstVideoInfo structure previously allocated with gst_video_info_new() or gst_video_info_copy().

isEqual

public boolean isEqual(VideoInfo other)

Compares two GstVideoInfo and returns whether they are equal or not

Parameters:

other - a GstVideoInfo

Returns:

true if this VideoInfo and other are equal, else false.

setFormat

public boolean setFormat(VideoFormat format,
 int width,
 int height)

Set the default info for a video frame of format and width and height.

Note: This initializes this VideoInfo first, no values are preserved. This function does not set the offsets correctly for interlaced vertically subsampled formats.

Parameters:

format - the format

width - a width

height - a height

Returns:

false if the returned video info is invalid, e.g. because the size of a frame can't be represented as a 32 bit integer (Since: 1.12)

setInterlacedFormat

public boolean setInterlacedFormat(VideoFormat format,
 VideoInterlaceMode mode,
 int width,
 int height)

Same as gst_video_info_set_format but also allowing to set the interlaced mode.

Parameters:

format - the format

mode - a GstVideoInterlaceMode

width - a width

height - a height

Returns:

false if the returned video info is invalid, e.g. because the size of a frame can't be represented as a 32 bit integer.

toCaps

public Caps toCaps()

Convert the values of this VideoInfo into a GstCaps.

Returns:

a new GstCaps containing the info of this VideoInfo.