CoverImageWorkflowOperationHandler
Description
The CoverImageWorkflowOperationHandler generates a cover image based on an XSLT transformation which results in an SVG image that is rasterized as PNG as a last step.
Parameter Table
| Name | Type | Example | Default Value | Description |
|---|---|---|---|---|
| stylesheet * | URL | file:///etc/opencast/branding/coverimage.xsl | - | File URI to the XSL stylesheet used to generate the SVG image |
| metadata | XML | - | XML string which is passed to the XSL transformation. If parameter is not given, a default XML is handed to the transformation | |
| width * | int | 1920 | - | Width of the resulting image |
| height * | int | 1080 | - | Height of the resulting image |
| posterimage-flavor | Flavor | image/poster | - | Flavor of a poster image which may be used as a part of the cover image (e.g. as a background) |
| posterimage | URL | http://flickr.com/posterimage.jpg | - | URL to a custom poster image instead of using one out of the media package |
| target-flavor * | Flavor | image/cover | - | Flavor of the resulting cover image |
| target-tags | String | archive,download | - | Comma separated list of tags to be applied to the resulting attachment. |
Operation Example
<operation
id="cover-image"
fail-on-error="true"
exception-handler-workflow="error"
description="Create a cover image">
<configurations>
<configuration key="stylesheet">file:///etc/opencast/branding/coverimage/opencast-default.xsl</configuration>
<configuration key="metadata"><![CDATA[<meta><title>my custom title</title><special>very special</special></meta>]]></configuration>
<configuration key="width">1920</configuration>
<configuration key="height">1080</configuration>
<configuration key="posterimage-flavor">presenter/player+preview</configuration>
<configuration key="target-flavor">image/cover</configuration>
</configurations>
</operation>
Template
As a starting point for your own template you best take a look at file /coverimage/default-template.xsl in the resources of the bundle opencast-conductor. The metadata XML, which is passed to the cover image service in case you don't pass your own, looks like the following example:
<?xml version="1.0"?>
<metadata>
<title>Puppy Love</title>
<date>2014-03-24T11:21:00Z</date>
<license>All rights reserved</license>
<series>Superbowl Commercials</series>
<contributors>Budweiser</contributors>
<creators>Budweiser</creators>
<subjects>Commercial</subjects>
</metadata>