Adds RTCP feedback XMPP packet extension.

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

@@ -157,6 +157,13 @@ public JingleIQProvider()
                 new DefaultPacketExtensionProvider<CallIdPacketExtension>(
                         CallIdPacketExtension.class));
 
+        //rtcp-fb
+        providerManager.addExtensionProvider(
+            RtcpFbPacketExtension.ELEMENT_NAME,
+            RtcpFbPacketExtension.NAMESPACE,
+            new DefaultPacketExtensionProvider<RtcpFbPacketExtension>(
+                RtcpFbPacketExtension.class));
+
         //rtcp-mux
         providerManager.addExtensionProvider(
                 RtcpmuxPacketExtension.ELEMENT_NAME,

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

@@ -217,4 +217,27 @@ public List<ParameterPacketExtension> getParameters()
     {
         return getChildExtensionsOfType(ParameterPacketExtension.class);
     }
+
+    /**
+     * Adds an RTCP feedback type to the list that we already have registered
+     * for this payload type.
+     *
+     * @param rtcpFbPacketExtension RTCP feedback type for this encoding.
+     */
+    public void addRtcpFeedbackType(RtcpFbPacketExtension rtcpFbPacketExtension)
+    {
+        addChildExtension(rtcpFbPacketExtension);
+    }
+
+    /**
+     * Returns the list of RTCP feedback types currently registered for this
+     * payload type.
+     *
+     * @return the list of RTCP feedback types currently registered for this
+     *         payload type.
+     */
+    public List<RtcpFbPacketExtension> getRtcpFeedbackTypeList()
+    {
+        return getChildExtensionsOfType(RtcpFbPacketExtension.class);
+    }
 }

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

@@ -0,0 +1,89 @@
+/*
+ * 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.*;
+
+/**
+ * Packet extension that holds RTCP feedback types of the
+ * {@link PayloadTypePacketExtension}. Defined in XEP-0293.
+ *
+ * @author Pawel Domas
+ */
+public class RtcpFbPacketExtension
+    extends AbstractPacketExtension
+{
+    /**
+     * The name space for RTP feedback elements.
+     */
+    public static final String NAMESPACE = "urn:xmpp:jingle:apps:rtp:rtcp-fb:0";
+
+    /**
+     * The name of the RTCP feedback element.
+     */
+    public static final String ELEMENT_NAME = "rtcp-fb";
+
+    /**
+     * The name the attribute that holds the feedback type.
+     */
+    public static final String TYPE_ATTR_NAME = "type";
+
+    /**
+     *  The name the attribute that holds the feedback subtype.
+     */
+    public static final String SUBTYPE_ATTR_NAME = "subtype";
+
+    /**
+     * Creates new empty instance of <tt>RtcpFbPacketExtension</tt>.
+     */
+    public RtcpFbPacketExtension()
+    {
+        super(NAMESPACE, ELEMENT_NAME);
+    }
+
+    /**
+     * Sets RTCP feedback type attribute.
+     * @param feedbackType the RTCP feedback type to set.
+     */
+    public void setFeedbackType(String feedbackType)
+    {
+        setAttribute(TYPE_ATTR_NAME, feedbackType);
+    }
+
+    /**
+     * Returns RTCP feedback type attribute value if already set
+     * or <tt>null</tt> otherwise.
+     *
+     * @return RTCP feedback type attribute if already set or <tt>null</tt>
+     *         otherwise.
+     */
+    public String getFeedbackType()
+    {
+        return getAttributeAsString(TYPE_ATTR_NAME);
+    }
+
+    /**
+     * Sets RTCP feedback subtype attribute.
+     * @param feedbackSubType the RTCP feedback subtype to set.
+     */
+    public void setFeedbackSubtype(String feedbackSubType)
+    {
+        setAttribute(SUBTYPE_ATTR_NAME, feedbackSubType);
+    }
+
+    /**
+     * Returns RTCP feedback subtype attribute value if already set
+     * or <tt>null</tt> otherwise.
+     *
+     * @return RTCP feedback subtype attribute if already set or <tt>null</tt>
+     *         otherwise.
+     */
+    public String getFeedbackSubtype()
+    {
+        return getAttributeAsString(SUBTYPE_ATTR_NAME);
+    }
+}