# frei0r-src-test-pat-i

Generates spatial impulse and step test patterns

## Hierarchy

    GObject
        ╰──GInitiallyUnowned
            ╰──GstObject
                ╰──GstElement
                    ╰──GstBaseSrc
                        ╰──GstPushSrc
                            ╰──frei0r-src-test-pat-i

## Factory details

Authors: – Sebastian Dröge <sebastian.droege@collabora.co.uk>, Marko Cebokli</sebastian.droege@collabora.co.uk>

Classification: – `Source/Video`

Rank – none

Plugin – frei0r

Package – GStreamer Bad Plug-ins

## Pad Templates

### `src`

    video/x-raw:
             format: RGBA
              width: [ 1, 2147483647 ]
             height: [ 1, 2147483647 ]
          framerate: [ 0/1, 2147483647/1 ]

Presence – always

Direction – src

Object type – GstPad

## Properties

### amplitude

    “amplitude” gdouble

Amplitude (contrast) of the pattern

Flags : Read / Write

Default value : 0.8

### channel

    “channel” gdouble

Into which color channel to draw

Flags : Read / Write

Default value : 0

### negative

    “negative” gboolean

Change polarity of impulse/step

Flags : Read / Write

Default value : false

### tilt

    “tilt” gdouble

Angle of step function

Flags : Read / Write

Default value : 0.5

### type

    “type” gdouble

Type of test pattern

Flags : Read / Write

Default value : 0

### width

    “width” gdouble

Width of impulse

Flags : Read / Write

Default value : 0.040404

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