# frei0r-filter-alphaspot

Draws simple shapes into the alpha channel

## Hierarchy

    GObject
        ╰──GInitiallyUnowned
            ╰──GstObject
                ╰──GstElement
                    ╰──GstBaseTransform
                        ╰──GstVideoFilter
                            ╰──frei0r-filter-alphaspot

## Factory details

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

Classification: – `Filter/Effect/Video`

Rank – none

Plugin – frei0r

Package – GStreamer Bad Plug-ins

## Pad Templates

### `sink`

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

Presence – always

Direction – sink

Object type – GstPad

### `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

### max

    “max” gdouble

Flags : Read / Write

Default value : 1

### min

    “min” gdouble

Flags : Read / Write

Default value : 0

### operation

    “operation” gdouble

Flags : Read / Write

Default value : 0

### position-x

    “position-x” gdouble

Flags : Read / Write

Default value : 0.5

### position-y

    “position-y” gdouble

Flags : Read / Write

Default value : 0.5

### shape

    “shape” gdouble

Flags : Read / Write

Default value : 0

### size-x

    “size-x” gdouble

Flags : Read / Write

Default value : 0.1

### size-y

    “size-y” gdouble

Flags : Read / Write

Default value : 0.1

### tilt

    “tilt” gdouble

Flags : Read / Write

Default value : 0.5

### transition-width

    “transition-width” gdouble

Flags : Read / Write

Default value : 0.2

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