-- XSD schema extracted from ITU-T H.761 (11/2014)

<!--
XML Schema for the NCL modules

This is NCL
Copyright: 2005 PUC-RIO/LABORATORIO TELEMIDIA, All Rights Reserved.
See http://www.telemidia.puc-rio.br

Public URI: http://www.ncl.org.br/NCL3.1/modules/NCL31MediaContentAnchor.xsd
Author: TeleMidia Laboratory
Revision: 30/06/2013

Schema for the NCL Media Content Anchor module namespace.
-->
<schema xmlns="http://www.w3.org/2001/XMLSchema"
  xmlns:mediaAnchor="http://www.ncl.org.br/NCL3.1/MediaContentAnchor"
  targetNamespace="http://www.ncl.org.br/NCL3.1/MediaContentAnchor"
  elementFormDefault="qualified" attributeFormDefault="unqualified" >


  <!-- define the temporalAnchorAttrs attribute group -->
  <attributeGroup name="temporalAnchorAttrs">
    <attribute name="begin" type="string" use="optional"/>
    <attribute name="end" type="string" use="optional"/>
  </attributeGroup>

  <!-- define the textAnchorAttrs attribute group -->
  <attributeGroup name="textAnchorAttrs">
    <attribute name="beginText" type="string" use="optional"/>
    <attribute name="beginPosition" type="unsignedLong" use="optional"/>
    <attribute name="endText" type="string" use="optional"/>
    <attribute name="endPosition" type="unsignedLong" use="optional"/>
  </attributeGroup>

  <!-- define the sampleAnchorAttrs attribute group -->
  <attributeGroup name="sampleAnchorAttrs">
    <attribute name="first" type="string" use="optional"/>
    <attribute name="last" type="string" use="optional"/>
  </attributeGroup>

  <!-- define the coordsAnchorAttrs attribute group -->
  <attributeGroup name="coordsAnchorAttrs">
    <attribute name="coords" type="string" use="optional"/>
  </attributeGroup>
  
  <!-- define the labelAttrs attribute group -->
  <attributeGroup name="labelAttrs">
    <attribute name="label" type="string" use="optional"/>
  </attributeGroup>
  
  <!-- define the clip attribute group -->
  <attributeGroup name="clipAttrs">
    <attribute name="clip" type="string" use="optional"/>
  </attributeGroup>

  <complexType name="componentAnchorPrototype">
    <attribute name="id" type="ID" use="required"/>
    <attributeGroup ref="mediaAnchor:coordsAnchorAttrs" />
    <attributeGroup ref="mediaAnchor:temporalAnchorAttrs" />
    <attributeGroup ref="mediaAnchor:textAnchorAttrs" />
    <attributeGroup ref="mediaAnchor:sampleAnchorAttrs" />
    <attributeGroup ref="mediaAnchor:labelAttrs" />
    <attributeGroup ref="mediaAnchor:clipAttrs" />
  </complexType>

  <!-- declare global elements in this module -->
  <element name="area" type="mediaAnchor:componentAnchorPrototype"/>

</schema>