# rsvgoverlay

This elements overlays SVG graphics over the video. SVG data can either be specified through properties, or fed through the data-sink pad.

Position and dimension of the SVG graphics can be achieved by specifying appropriate dimensions in the SVG file itself, but shortcuts are provided by the element to specify x/y position and width/height dimension, both in absolute form (pixels) and in relative form (percentage of video dimension).

For any measure (x/y/width/height), the absolute value (in pixels) takes precedence over the relative one if both are specified. Absolute values must be set to 0 to disable them.

If all parameters are 0, the image is displayed without rescaling at (0, 0) position.

The fit-to-frame property is a shortcut for displaying the SVG overlay at (0, 0) position filling the whole screen. It modifies the values of the x/y/width/height attributes, by setting height-/width-relative to 1.0. and all other attributes to 0.

## Example launch lines

     gst-launch-1.0 -v videotestsrc ! videoconvert ! rsvgoverlay location=foo.svg ! videoconvert ! autovideosink

specifies the SVG location through the filename property.

     gst-launch-1.0 -v videotestsrc ! videoconvert ! rsvgoverlay name=overlay ! videoconvert ! autovideosink filesrc location=foo.svg ! image/svg ! overlay.data_sink

does the same by feeding data through the data_sink pad. You can also specify the SVG data itself as parameter:

     gst-launch-1.0 -v videotestsrc ! videoconvert ! rsvgoverlay data='<svg viewBox="0 0 800 600"><image x="80%" y="80%" width="10%" height="10%" xlink:href="foo.jpg" /></svg>' ! videoconvert ! autovideosink

## Hierarchy

    GObject
        ╰──GInitiallyUnowned
            ╰──GstObject
                ╰──GstElement
                    ╰──GstBaseTransform
                        ╰──GstVideoFilter
                            ╰──rsvgoverlay

## Factory details

Authors: – Olivier Aubert

Classification: – `Filter/Editor/Video`

Rank – none

Plugin – rsvg

Package – GStreamer Bad Plug-ins

## Pad Templates

### `data_sink`

    image/svg+xml:
    image/svg:
    text/plain:

Presence – always

Direction – sink

Object type – GstPad

### `sink`

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

Presence – always

Direction – sink

Object type – GstPad

### `src`

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

Presence – always

Direction – src

Object type – GstPad

## Properties

### data

    “data” gchararray

SVG data.

Flags : Read / Write

### fit-to-frame

    “fit-to-frame” gboolean

Fit the SVG to fill the whole frame.

Flags : Read / Write

Default value : false

### height

    “height” gint

Specify a height in pixels.

Flags : Read / Write

Default value : 0

### height-relative

    “height-relative” gfloat

Specify a height relative to the display size.

Flags : Read / Write

Default value : 0

### location

    “location” gchararray

SVG file location.

Flags : Read / Write

### width

    “width” gint

Specify a width in pixels.

Flags : Read / Write

Default value : 0

### width-relative

    “width-relative” gfloat

Specify a width relative to the display size.

Flags : Read / Write

Default value : 0

### x

    “x” gint

Specify an x offset.

Flags : Read / Write

Default value : 0

### x-relative

    “x-relative” gfloat

Specify an x offset relative to the display size.

Flags : Read / Write

Default value : 0

### y

    “y” gint

Specify a y offset.

Flags : Read / Write

Default value : 0

### y-relative

    “y-relative” gfloat

Specify a y offset relative to the display size.

Flags : Read / Write

Default value : 0

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