<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE SystemDefinition [
<!ELEMENT SystemDefinition ( systemModel )>
<!ATTLIST SystemDefinition
  name CDATA #REQUIRED
  schema CDATA #REQUIRED
>
<!-- all paths are relative to the environment variable specified by the root attribute, or SOURCEROOT if not.  -->

<!-- System Model Section of DTD -->
<!ELEMENT systemModel (layer+)>

<!ELEMENT layer (block* | collection*)*>
<!-- Kernel Services, Base Services, OS Services, Etc -->
<!ATTLIST layer
  name CDATA #REQUIRED
  long-name CDATA #IMPLIED
  levels NMTOKENS #IMPLIED
  span CDATA #IMPLIED
>

<!ELEMENT block (subblock* | collection*)*>
 <!-- Generic OS services, Comms Services, etc -->
<!ATTLIST block
  levels NMTOKENS #IMPLIED
  span CDATA #IMPLIED
  level NMTOKEN #IMPLIED
  name CDATA #REQUIRED
  long-name CDATA #IMPLIED
>

<!ELEMENT subblock (collection)*>
<!-- Cellular Baseband Services, Networking Services, etc -->
<!ATTLIST subblock
  name CDATA #REQUIRED
  long-name CDATA #IMPLIED
>

<!ELEMENT collection (component)*>
<!-- Screen Driver, Content Handling, etc -->
<!ATTLIST collection
  name CDATA #REQUIRED
  long-name CDATA #IMPLIED
  level NMTOKEN #IMPLIED
>

<!ELEMENT component (unit)*>
<!-- contains units or is a  package or prebuilt -->
<!ATTLIST component
  name CDATA #REQUIRED
  long-name CDATA #IMPLIED
  deprecated CDATA #IMPLIED
  introduced CDATA #IMPLIED
  contract CDATA #IMPLIED
  plugin (Y|N) "N"
  filter CDATA #IMPLIED
  class NMTOKENS #IMPLIED
  supports CDATA #IMPLIED
  purpose ( optional | mandatory | development ) "optional"
>

<!ELEMENT unit EMPTY >
<!-- must be buildable (bld.inf) -->
<!-- bldFile  may someday be removed in favour of mrp -->
<!ATTLIST unit
  mrp CDATA #IMPLIED
  filter CDATA #IMPLIED
  bldFile CDATA #IMPLIED
  root CDATA #IMPLIED
  version NMTOKEN #IMPLIED
  prebuilt NMTOKEN #IMPLIED
  late (Y|N) #IMPLIED
  priority CDATA #IMPLIED
>
]>
<SystemDefinition name="Symbian^4" schema="2.0.1">
  <systemModel>
    <layer name="app" long-name="Applications" levels="services apps">
      <block name="videotelephony" level="apps" long-name="Video Telephony Apps" levels="engine plugin prot ui">
        <collection name="videotelephony_plat" long-name="VT Apps Platform Interfaces" level="ui">
          <component name="video_telephony_control_mediator_api" long-name="Video Telephony Control Mediator API" filter="s60" class="api">
            <unit bldFile="/sf/app/videotelephony/videotelephony_plat/video_telephony_control_mediator_api/group"/>
          </component>
          <component name="video_telephony_media_configuration_api" long-name="Video Telephony Media Configuration API" filter="s60" class="api">
            <unit bldFile="/sf/app/videotelephony/videotelephony_plat/video_telephony_media_configuration_api/group"/>
          </component>
        </collection>
        <collection name="vtengines" long-name="Video Telephony Engines" level="engine">
          <component name="videoteleng" filter="s60" long-name="Video Telephony Engine">
            <unit bldFile="/sf/app/videotelephony/vtengines/videoteleng/Group"/>
          </component>
          <component name="vtmediatorplugin" filter="s60" long-name="VT Mediator Plugin" plugin="Y">
            <unit bldFile="/sf/app/videotelephony/vtengines/vtmediatorplugin/group"/>
          </component>
        </collection>
        <collection name="vtuis" long-name="Video Telephony UIs" level="ui">
          <component name="videotelui" filter="s60" long-name="Video Telephony UI">
            <unit bldFile="/sf/app/videotelephony/vtuis/videotelui/group"/>
          </component>
        </collection>
        <collection name="vtprotocolplugins" long-name="VT Protocol Plugins" level="plugin">
          <component name="displaysink" filter="s60" long-name="Display Sink" introduced="^2">
            <unit bldFile="/sf/app/videotelephony/vtprotocolplugins/DisplaySink/group"/>
          </component>
          <component name="videosource" filter="s60" long-name="Video Source" introduced="^2">
            <unit bldFile="/sf/app/videotelephony/vtprotocolplugins/VideoSource/group"/>
          </component>
        </collection>
        <collection name="vtprotocolsstub" long-name="VT Protocols Stub" level="prot">
          <!--  this collection is really a component, move down a directory -->
          <component name="videotelproto" filter="s60" long-name="Video Telephony Protocol">
            <unit bldFile="/sf/app/videotelephony/vtprotocolsstub/group" filter="sf_build"/>
          </component>
        </collection>
      </block>
    </layer>
  </systemModel>
</SystemDefinition>