Updated Jingle implementation. SMACK-240. Thanks to Jeff Williams.

git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@10419 b35dd754-fafc-0310-a699-88a17e54d16e

jingle/extension/source/org/jivesoftware/smackx/packet/JingleDescription.java

@@ -0,0 +1,197 @@
+/**
+ * $RCSfile: JingleDescription.java,v $
+ * $Revision: 1.1 $
+ * $Date: 2007/07/02 17:41:08 $
+ *
+ * Copyright 2003-2005 Jive Software.
+ *
+ * All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.jivesoftware.smackx.packet;
+
+import org.jivesoftware.smack.packet.PacketExtension;
+import org.jivesoftware.smackx.jingle.media.PayloadType;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.List;
+
+/**
+ * Jingle content description.
+ *
+ * @author Alvaro Saurin <alvaro.saurin@gmail.com>
+ */
+public abstract class JingleDescription implements PacketExtension {
+
+    // static
+
+    public static final String NODENAME = "description";
+
+    // non-static
+
+    private final List<PayloadType> payloads = new ArrayList<PayloadType>();
+
+    /**
+     * Creates a content description..
+     */
+    public JingleDescription() {
+        super();
+    }
+
+    /**
+     * Returns the XML element name of the element.
+     *
+     * @return the XML element name of the element.
+     */
+    public String getElementName() {
+        return NODENAME;
+    }
+
+    /**
+     * Return the namespace.
+     *
+     * @return The namespace
+     */
+    public abstract String getNamespace();
+
+    /**
+     * Adds a audio payload type to the packet.
+     *
+     * @param pt the audio payload type to add.
+     */
+    public void addPayloadType(final PayloadType pt) {
+        synchronized (payloads) {
+            if (pt == null) {
+                System.err.println("Null payload type");
+            } else {
+                payloads.add(pt);
+            }
+        }
+    }
+
+    /**
+     * Adds a list of payloads to the packet.
+     *
+     * @param pts the payloads to add.
+     */
+    public void addAudioPayloadTypes(final List<PayloadType> pts) {
+        synchronized (payloads) {
+            Iterator ptIter = pts.iterator();
+            while (ptIter.hasNext()) {
+                PayloadType.Audio pt = (PayloadType.Audio) ptIter.next();
+                addPayloadType(new PayloadType.Audio(pt));
+            }
+        }
+    }
+
+    /**
+     * Returns an Iterator for the audio payloads in the packet.
+     *
+     * @return an Iterator for the audio payloads in the packet.
+     */
+    public Iterator<PayloadType> getPayloadTypes() {
+        return Collections.unmodifiableList(getPayloadTypesList()).iterator();
+    }
+
+    /**
+     * Returns a list for the audio payloads in the packet.
+     *
+     * @return a list for the audio payloads in the packet.
+     */
+    public List<PayloadType> getPayloadTypesList() {
+        synchronized (payloads) {
+            return new ArrayList<PayloadType>(payloads);
+        }
+    }
+
+    /**
+     * Return the list of Payload types contained in the description.
+     *
+     * @return a list of PayloadType.Audio
+     */
+    public List<PayloadType> getAudioPayloadTypesList() {
+        ArrayList<PayloadType> result = new ArrayList<PayloadType>();
+        Iterator<PayloadType> jinglePtsIter = getPayloadTypes();
+
+        while (jinglePtsIter.hasNext()) {
+            PayloadType jpt = (PayloadType) jinglePtsIter.next();
+            if (jpt instanceof PayloadType.Audio) {
+                PayloadType.Audio jpta = (PayloadType.Audio) jpt;
+                result.add(jpta);
+            }
+        }
+
+        return result;
+    }
+
+    /**
+     * Returns a count of the audio payloads in the Jingle packet.
+     *
+     * @return the number of audio payloads in the Jingle packet.
+     */
+    public int getPayloadTypesCount() {
+        synchronized (payloads) {
+            return payloads.size();
+        }
+    }
+
+    /**
+     * Convert a Jingle description to XML.
+     *
+     * @return a string with the XML representation
+     */
+    public String toXML() {
+        StringBuilder buf = new StringBuilder();
+
+        synchronized (payloads) {
+            if (payloads.size() > 0) {
+                buf.append("<").append(getElementName());
+                buf.append(" xmlns=\"").append(getNamespace()).append("\" >");
+
+                for (PayloadType payloadType : payloads) {
+                    if (payloadType != null) {
+                        buf.append(payloadType.toXML());
+                    }
+                }
+                buf.append("</").append(getElementName()).append(">");
+            }
+        }
+
+        return buf.toString();
+    }
+
+    /**
+     * Jingle audio description
+     */
+    public static class Audio extends JingleDescription {
+
+        public static final String NAMESPACE = "http://www.xmpp.org/extensions/xep-0167.html#ns";
+
+        public Audio() {
+            super();
+        }
+
+        /**
+         * Utility constructor, with a PayloadType
+         */
+        public Audio(final PayloadType pt) {
+            super();
+            addPayloadType(pt);
+        }
+
+        public String getNamespace() {
+            return NAMESPACE;
+        }
+    }
+}