Adds support for XEP-0339 source groups in ColibriConferenceIQ and ColibriIQProvider.

src/net/java/sip/communicator/impl/protocol/jabber/extensions/colibri/ColibriConferenceIQ.java

@@ -898,6 +898,11 @@ public static class Channel
         private final List<SourcePacketExtension> sources
             = new LinkedList<SourcePacketExtension>();
 
+        /**
+         * The <tt>SourceGroupPacketExtension</tt>s of this channel.
+         */
+        private List<SourceGroupPacketExtension> sourceGroups;
+
         /**
          * The list of (RTP) SSRCs which have been seen/received on this
          * <tt>Channel</tt> by now. These may exclude SSRCs which are no longer
@@ -956,6 +961,29 @@ public synchronized boolean addSource(SourcePacketExtension source)
             return sources.contains(source) ? false : sources.add(source);
         }
 
+        /**
+         * Adds a <tt>SourceGroupPacketExtension</tt> to the list of source
+         * groups of this channel.
+         *
+         * @param sourceGroup the <tt>SourcePacketExtension</tt> to add to the
+         * list of sources of this channel
+         *
+         * @return <tt>true</tt> if the list of sources of this channel changed
+         * as a result of the execution of the method; otherwise, <tt>false</tt>
+         */
+        public synchronized boolean addSourceGroup(
+                SourceGroupPacketExtension sourceGroup)
+        {
+            if (sourceGroup == null)
+                throw new NullPointerException("sourceGroup");
+
+            if (sourceGroups == null)
+                sourceGroups = new LinkedList<SourceGroupPacketExtension>();
+
+            return sourceGroups.contains(sourceGroup)
+                    ? false : sourceGroups.add(sourceGroup);
+        }
+
         /**
          * Adds a specific (RTP) SSRC to the list of SSRCs seen/received on this
          * <tt>Channel</tt>. Invoked by the Jitsi Videobridge server, not its
@@ -1104,6 +1132,19 @@ public synchronized List<SourcePacketExtension> getSources()
             return new ArrayList<SourcePacketExtension>(sources);
         }
 
+        /**
+         * Gets the list of <tt>SourceGroupPacketExtensions</tt>s which
+         * represent the source groups of this channel.
+         *
+         * @return a <tt>List</tt> of <tt>SourceGroupPacketExtension</tt>s which
+         * represent the source groups of this channel
+         */
+        public synchronized List<SourceGroupPacketExtension> getSourceGroups()
+        {
+            return (sourceGroups == null) ? null
+                    : new ArrayList<SourceGroupPacketExtension>(sourceGroups);
+        }
+
         /**
          * Gets (a copy of) the list of (RTP) SSRCs seen/received on this
          * <tt>Channel</tt>.
@@ -1407,6 +1448,7 @@ protected void printContent(StringBuilder xml)
         {
             List<PayloadTypePacketExtension> payloadTypes = getPayloadTypes();
             List<SourcePacketExtension> sources = getSources();
+            List<SourceGroupPacketExtension> souceGroups = getSourceGroups();
             int[] ssrcs = getSSRCs();
 
             for (PayloadTypePacketExtension payloadType : payloadTypes)
@@ -1415,6 +1457,10 @@ protected void printContent(StringBuilder xml)
             for (SourcePacketExtension source : sources)
                 xml.append(source.toXML());
 
+            if (souceGroups != null && souceGroups.size() != 0)
+                for (SourceGroupPacketExtension sourceGroup : souceGroups)
+                    xml.append(sourceGroup.toXML());
+
             for (int i = 0; i < ssrcs.length; i++)
             {
                 xml.append('<').append(SSRC_ELEMENT_NAME).append('>')

src/net/java/sip/communicator/impl/protocol/jabber/extensions/colibri/ColibriIQProvider.java

@@ -40,6 +40,11 @@ public ColibriIQProvider()
                 SourcePacketExtension.NAMESPACE,
                 new DefaultPacketExtensionProvider<SourcePacketExtension>(
                         SourcePacketExtension.class));
+        providerManager.addExtensionProvider(
+                SourceGroupPacketExtension.ELEMENT_NAME,
+                SourceGroupPacketExtension.NAMESPACE,
+                new DefaultPacketExtensionProvider<SourceGroupPacketExtension>(
+                        SourceGroupPacketExtension.class));
 
         PacketExtensionProvider parameterProvider
             = new DefaultPacketExtensionProvider<ParameterPacketExtension>(
@@ -84,6 +89,13 @@ else if (childExtension instanceof IceUdpTransportPacketExtension)
 
             channel.setTransport(transport);
         }
+        else if (childExtension instanceof SourceGroupPacketExtension)
+        {
+            SourceGroupPacketExtension sourceGroup
+                    = (SourceGroupPacketExtension)childExtension;
+
+            channel.addSourceGroup(sourceGroup);
+        }
     }
 
     private void addChildExtension(
@@ -538,7 +550,14 @@ else if (SourcePacketExtension.ELEMENT_NAME.equals(name)
                             peName = name;
                             peNamespace = SourcePacketExtension.NAMESPACE;
                         }
-
+                        else if (SourceGroupPacketExtension.ELEMENT_NAME
+                                                .equals(name)
+                                && SourceGroupPacketExtension.NAMESPACE
+                                                .equals(parser.getNamespace()))
+                        {
+                            peName = name;
+                            peNamespace = SourceGroupPacketExtension.NAMESPACE;
+                        }
                         if (peName == null)
                         {
                             throwAway(parser, name);

src/net/java/sip/communicator/impl/protocol/jabber/extensions/jingle/SourceGroupPacketExtension.java

@@ -0,0 +1,66 @@
+/*
+ * Jitsi, the OpenSource Java VoIP and Instant Messaging client.
+ *
+ * Distributable under LGPL license.
+ * See terms of license at gnu.org.
+ */
+package net.java.sip.communicator.impl.protocol.jabber.extensions.jingle;
+
+import net.java.sip.communicator.impl.protocol.jabber.extensions.*;
+import net.java.sip.communicator.impl.protocol.jabber.extensions.colibri.*;
+
+import java.util.*;
+
+/**
+ * Represents <tt>ssrc-group</tt> elements described in XEP-0339.
+ *
+ * Created by gp on 07/08/14.
+ */
+public class SourceGroupPacketExtension
+        extends AbstractPacketExtension
+{
+
+    /**
+     * The name of the "ssrc-group" element.
+     */
+    public static final String ELEMENT_NAME = "ssrc-group";
+
+    /**
+     * The namespace for the "ssrc-group" element.
+     */
+    public static final String NAMESPACE = "urn:xmpp:jingle:apps:rtp:ssma:0";
+
+    /**
+     * The name of the payload <tt>id</tt> SDP argument.
+     */
+    public static final String SEMANTICS_ATTR_NAME = "semantics";
+
+    /**
+     * Creates a new {@link SourceGroupPacketExtension} instance with the proper
+     * element name and namespace.
+     */
+    public SourceGroupPacketExtension()
+    {
+        super(NAMESPACE, ELEMENT_NAME);
+    }
+
+    /**
+     * Gets the semantics of this source group.
+     *
+     * @return the semantics of this source group.
+     */
+    public String getSemantics()
+    {
+        return getAttributeAsString(SEMANTICS_ATTR_NAME);
+    }
+
+    /**
+     * Gets the sources of this source group.
+     *
+     * @return the sources of this source group.
+     */
+    public List<SourcePacketExtension> getSources()
+    {
+        return getChildExtensionsOfType(SourcePacketExtension.class);
+    }
+}