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gloverlay

gloverlay

Properties

gdouble alpha Read / Write
gchar * location Read / Write
gint offset-x Read / Write
gint offset-y Read / Write
gint overlay-height Read / Write
gint overlay-width Read / Write
gdouble relative-x Read / Write
gdouble relative-y Read / Write

Types and Values

struct GstGLOverlay

Object Hierarchy

    GObject
    ╰── GInitiallyUnowned
        ╰── GstObject
            ╰── GstElement
                ╰── GstBaseTransform
                    ╰── GstGLBaseFilter
                        ╰── GstGLFilter
                            ╰── GstGLOverlay

Description

Overlay GL video texture with a PNG image

Examples

1
gst-launch-1.0 videotestsrc ! gloverlay location=image.jpg ! glimagesink

FBO (Frame Buffer Object) is required.

Synopsis

Element Information

plugin

opengl

author

Filippo Argiolas <filippo.argiolas@gmail.com>, Matthew Waters <matthew@centricular.com>

class

Filter/Effect/Video

Element Pads

name

sink

direction

sink

presence

always

details

video/x-raw(ANY), format=(string)RGBA, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ], texture-target=(string)2D

video/x-raw(memory:GLMemory), format=(string)RGBA, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ], texture-target=(string)2D

name

src

direction

source

presence

always

details

video/x-raw(memory:GLMemory), format=(string)RGBA, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ], texture-target=(string)2D

video/x-raw(ANY), format=(string)RGBA, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ], texture-target=(string)2D

Functions

Types and Values

struct GstGLOverlay

struct GstGLOverlay;

Property Details

The “alpha” property

  “alpha”                    gdouble

Global alpha of overlay image.

Flags: Read / Write

Allowed values: [0,1]

Default value: 1


The “location” property

  “location”                 gchar *

Location of image file to overlay.

Flags: Read / Write

Default value: NULL


The “offset-x” property

  “offset-x”                 gint

For positive value, horizontal offset of overlay image in pixels from left of video image. For negative value, horizontal offset of overlay image in pixels from right of video image.

Flags: Read / Write

Default value: 0


The “offset-y” property

  “offset-y”                 gint

For positive value, vertical offset of overlay image in pixels from top of video image. For negative value, vertical offset of overlay image in pixels from bottom of video image.

Flags: Read / Write

Default value: 0


The “overlay-height” property

  “overlay-height”           gint

Height of overlay image in pixels (0 = same as overlay image).

Flags: Read / Write

Allowed values: >= 0

Default value: 0


The “overlay-width” property

  “overlay-width”            gint

Width of overlay image in pixels (0 = same as overlay image).

Flags: Read / Write

Allowed values: >= 0

Default value: 0


The “relative-x” property

  “relative-x”               gdouble

Horizontal offset of overlay image in fractions of video image width, from top-left corner of video image.

Flags: Read / Write

Allowed values: [0,1]

Default value: 0


The “relative-y” property

  “relative-y”               gdouble

Vertical offset of overlay image in fractions of video image height, from top-left corner of video image.

Flags: Read / Write

Allowed values: [0,1]

Default value: 0

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