gltransformation

Transforms video on the GPU.

Examples

 gst-launch-1.0 gltestsrc ! gltransformation rotation-z=45 ! glimagesink

A pipeline to rotate by 45 degrees

 gst-launch-1.0 gltestsrc ! gltransformation translation-x=0.5 ! glimagesink

Translate the video by 0.5

 gst-launch-1.0 gltestsrc ! gltransformation scale-y=0.5 scale-x=0.5 ! glimagesink

Resize the video by 0.5

 gst-launch-1.0 gltestsrc ! gltransformation rotation-x=-45 ortho=True ! glimagesink

Rotate the video around the X-Axis by -45° with an orthographic projection

Hierarchy

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

Factory details

Authors: – Lubosz Sarnecki , Matthew Waters

Classification: – Filter/Effect/Video

Rank – none

Plugin – opengl

Package – GStreamer Base Plug-ins

Pad Templates

`sink`

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

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

Presence – always

Direction – sink

Object type – GstPad

`src`

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

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

Presence – always

Direction – src

Object type – GstPad

Properties

fov

“fov” gfloat

Field of view angle in degrees

Flags : Read / Write

Default value : 90

mvp-matrix

“mvp-matrix” GrapheneMatrix *

The final Graphene 4x4 Matrix for transformation

Flags : Read / Write

ortho

“ortho” gboolean

Use orthographic projection

Flags : Read / Write

Default value : false

pivot-x

“pivot-x” gfloat

Rotation pivot point X coordinate, where 0 is the center, -1 the left border, +1 the right border and <-1, >1 outside.

Flags : Read / Write

Default value : 0

pivot-y

“pivot-y” gfloat

Rotation pivot point X coordinate, where 0 is the center, -1 the left border, +1 the right border and <-1, >1 outside.

Flags : Read / Write

Default value : 0

pivot-z

“pivot-z” gfloat

Relevant for rotation in 3D space. You look into the negative Z axis direction

Flags : Read / Write

Default value : 0

rotation-x

“rotation-x” gfloat

Rotates the video around the X-Axis in degrees.

Flags : Read / Write

Default value : 0

rotation-y

“rotation-y” gfloat

Rotates the video around the Y-Axis in degrees.

Flags : Read / Write

Default value : 0

rotation-z

“rotation-z” gfloat

Rotates the video around the Z-Axis in degrees.

Flags : Read / Write

Default value : 0

scale-x

“scale-x” gfloat

Scale multiplier for the X-Axis.

Flags : Read / Write

Default value : 1

scale-y

“scale-y” gfloat

Scale multiplier for the Y-Axis.

Flags : Read / Write

Default value : 1

translation-x

“translation-x” gfloat

Translates the video at the X-Axis, in universal [0-1] coordinate.

Flags : Read / Write

Default value : 0

translation-y

“translation-y” gfloat

Translates the video at the Y-Axis, in universal [0-1] coordinate.

Flags : Read / Write

Default value : 0

translation-z

“translation-z” gfloat

Translates the video at the Z-Axis, in universal [0-1] coordinate.

Flags : Read / Write

Default value : 0

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