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/provider/JingleDescriptionProvider.java

@@ -0,0 +1,143 @@
+/**
+ * $RCSfile: JingleDescriptionProvider.java,v $
+ * $Revision: 1.1 $
+ * $Date: 2007/07/02 17:41:11 $
+ *
+ * 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.provider;
+
+import org.jivesoftware.smack.packet.PacketExtension;
+import org.jivesoftware.smack.provider.PacketExtensionProvider;
+import org.jivesoftware.smackx.jingle.media.PayloadType;
+import org.jivesoftware.smackx.packet.JingleDescription;
+import org.xmlpull.v1.XmlPullParser;
+
+/**
+ * Parser for a Jingle description
+ * 
+ * @author Alvaro Saurin <alvaro.saurin@gmail.com>
+ */
+public abstract class JingleDescriptionProvider implements PacketExtensionProvider {
+
+    /**
+     * Default constructor
+     */
+    public JingleDescriptionProvider() {
+        super();
+    }
+
+    /**
+     * Parse a iq/jingle/description/payload-type element.
+     * 
+     * @param parser
+     *            the input to parse
+     * @return a payload type element
+     * @throws Exception
+     */
+    protected PayloadType parsePayload(final XmlPullParser parser) throws Exception {
+        int ptId = 0;
+        String ptName;
+        int ptChannels = 0;
+
+        try {
+            ptId = Integer.parseInt(parser.getAttributeValue("", "id"));
+        } catch (Exception e) {
+        }
+
+        ptName = parser.getAttributeValue("", "name");
+
+        try {
+            ptChannels = Integer.parseInt(parser.getAttributeValue("", "channels"));
+        } catch (Exception e) {
+        }
+
+        return new PayloadType(ptId, ptName, ptChannels);
+    }
+
+    /**
+     * Parse a iq/jingle/description element.
+     * 
+     * @param parser
+     *            the input to parse
+     * @return a description element
+     * @throws Exception
+     */
+    public PacketExtension parseExtension(final XmlPullParser parser) throws Exception {
+        boolean done = false;
+        JingleDescription desc = getInstance();
+
+        while (!done) {
+            int eventType = parser.next();
+            String name = parser.getName();
+
+            if (eventType == XmlPullParser.START_TAG) {
+                if (name.equals(PayloadType.NODENAME)) {
+                    desc.addPayloadType(parsePayload(parser));
+                } else {
+                    throw new Exception("Unknow element \"" + name + "\" in content.");
+                }
+            } else if (eventType == XmlPullParser.END_TAG) {
+                if (name.equals(JingleDescription.NODENAME)) {
+                    done = true;
+                }
+            }
+        }
+        return desc;
+    }
+
+    /**
+     * Return a new instance of this class. Subclasses must overwrite this
+     * method.
+     */
+    protected abstract JingleDescription getInstance();
+
+    /**
+     * Jingle audio
+     */
+    public static class Audio extends JingleDescriptionProvider {
+
+        /**
+         * Default constructor
+         */
+        public Audio() {
+            super();
+        }
+
+        /**
+         * Parse an audio payload type.
+         */
+        public PayloadType parsePayload(final XmlPullParser parser) throws Exception {
+            PayloadType pte = super.parsePayload(parser);
+            PayloadType.Audio pt = new PayloadType.Audio(pte);
+            int ptClockRate = 0;
+
+            try {
+                ptClockRate = Integer.parseInt(parser.getAttributeValue("", "clockrate"));
+            } catch (Exception e) {
+            }
+            pt.setClockRate(ptClockRate);
+
+            return pt;
+        }
+
+        /**
+         * Get a new instance of this object.
+         */
+        protected JingleDescription getInstance() {
+            return new JingleDescription.Audio();
+        }
+    }
+}