diff -r 537ddd8aa407 -r 2036ebfaccda src/jlibrtp/AppCallerThread.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jlibrtp/AppCallerThread.java	Fri Nov 20 19:29:42 2009 +0100
@@ -0,0 +1,170 @@
+/**
+ * Java RTP Library (jlibrtp)
+ * Copyright (C) 2006 Arne Kepp
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+package jlibrtp;
+
+import java.util.Enumeration;
+
+/**
+ * The purpose of this thread is to check whether there are packets ready from
+ * any participants.
+ * 
+ * It should sleep when not in use, and be woken up by a condition variable.
+ * 
+ * Optionally, if we do jitter-control, the condition variable should have a max
+ * waiting period equal to how often we need to push data.
+ * 
+ * @author Arne Kepp
+ */
+public class AppCallerThread extends Thread {
+	/** The parent RTP Session */
+	RTPSession rtpSession;
+	/** The applications interface, where the callback methods are called */
+	RTPAppIntf appl;
+
+	/**
+	 * Instatiates the AppCallerThread
+	 * 
+	 * @param session
+	 *            the RTPSession with participants etc
+	 * @param rtpApp
+	 *            the interface to which data is given
+	 */
+	protected AppCallerThread(RTPSession session, RTPAppIntf rtpApp) {
+		rtpSession = session;
+		appl = rtpApp;
+		if (RTPSession.rtpDebugLevel > 1) {
+			System.out.println("<-> AppCallerThread created");
+		}
+	}
+
+	/**
+	 * The AppCallerThread will run in this loop until the RTPSession is
+	 * terminated.
+	 * 
+	 * Whenever an RTP packet is received it will loop over the participants to
+	 * check for packet buffers that have available frame.
+	 */
+	public void run() {
+		if (RTPSession.rtpDebugLevel > 3) {
+			System.out.println("-> AppCallerThread.run()");
+		}
+
+		while (rtpSession.endSession == false) {
+
+			rtpSession.pktBufLock.lock();
+			try {
+				if (RTPSession.rtpDebugLevel > 4) {
+					System.out.println("<-> AppCallerThread going to Sleep");
+				}
+
+				try {
+					rtpSession.pktBufDataReady.await();
+				} catch (Exception e) {
+					System.out.println("AppCallerThread:" + e.getMessage());
+				}
+
+				// Next loop over all participants and check whether they have
+				// anything for us.
+				Enumeration<Participant> enu = rtpSession.partDb
+				.getParticipants();
+
+				while (enu.hasMoreElements()) {
+					Participant p = enu.nextElement();
+
+					boolean done = false;
+					// System.out.println(p.ssrc + " " + !done +" " +
+					// p.rtpAddress
+					// + " " + rtpSession.naiveReception + " " + p.pktBuffer);
+					// System.out.println("done: " + done + "  p.unexpected: " +
+					// p.unexpected);
+					while (!done
+							&& (!p.unexpected || rtpSession.naiveReception)
+							&& p.pktBuffer != null && p.pktBuffer.length > 0) {
+
+						DataFrame aFrame = p.pktBuffer.popOldestFrame();
+						if (aFrame == null) {
+							done = true;
+						} else {
+							appl.receiveData(aFrame, p);
+						}
+					}
+				}
+
+			} finally {
+				rtpSession.pktBufLock.unlock();
+			}
+		}
+		if (RTPSession.rtpDebugLevel > 3) {
+			System.out.println("<- AppCallerThread.run() terminating");
+		}
+	}
+
+	public DataFrame getNextDataFrame() {
+		if (RTPSession.rtpDebugLevel > 3) {
+			System.out.println("-> AppCallerThread.run()");
+		}
+		//rtpSession.pktBufLock.lock();
+		try {
+			if (RTPSession.rtpDebugLevel > 4) {
+				System.out.println("<-> AppCallerThread going to Sleep");
+			}
+
+			/*try {
+				rtpSession.pktBufDataReady.await();
+			} catch (Exception e) {
+				System.out.println("AppCallerThread:" + e.getMessage());
+			}*/
+
+			// Next loop over all participants and check whether they have
+			// anything for us.
+			/*Enumeration<Participant> enu = rtpSession.partDb
+			.getParticipants();
+
+			while (enu.hasMoreElements()) {*/
+				Participant p = rtpSession.firstPart;
+
+				boolean done = false;
+				// System.out.println(p.ssrc + " " + !done +" " +
+				// p.rtpAddress
+				// + " " + rtpSession.naiveReception + " " + p.pktBuffer);
+				// System.out.println("done: " + done + "  p.unexpected: " +
+				// p.unexpected);
+				while (!done
+						&& (!p.unexpected || rtpSession.naiveReception)
+						&& p.pktBuffer != null && p.pktBuffer.length > 0) {
+
+					DataFrame aFrame = p.pktBuffer.popOldestFrame();
+					if (aFrame == null) {
+						done = true;
+					} else {
+						return aFrame;
+					}
+				}
+			//}
+
+		} finally {
+			//rtpSession.pktBufLock.unlock();
+		}
+		if (RTPSession.rtpDebugLevel > 3) {
+			System.out.println("<- AppCallerThread.run() terminating");
+		}
+		return null;
+	}
+
+}