calldispatcher.java

jtapi for telephone

/* ====================================================================
 * The Apache Software License, Version 1.1
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 * Copyright (c) 2000 The Apache Software Foundation.  All rights
 * reserved.
 *
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 * modification, are permitted provided that the following conditions
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 *
 * 1. Redistributions of source code must retain the above copyright
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 *    distribution.
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 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
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 * 4. The names "Apache" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
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 * 5. Products derived from this software may not be called "Apache",
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 * Large portions of this software are based upon public domain software
 * https://sip-communicator.dev.java.net/
 *
 */
package net.sourceforge.gjtapi.raw.sipprovider.sip;

import net.sourceforge.gjtapi.raw.sipprovider.sip.event.CallListener;
import net.sourceforge.gjtapi.raw.sipprovider.sip.event.CallStateEvent;
import net.sourceforge.gjtapi.raw.sipprovider.common.Console;
import java.util.*;
import javax.sip.*;
import javax.sip.message.*;

/**
 * <p>Title: SIP COMMUNICATOR</p>
 * <p>Description:JAIN-SIP Audio/Video phone application</p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Organisation: LSIIT laboratory (http://lsiit.u-strasbg.fr) </p>
 * <p>Network Research Team (http://www-r2.u-strasbg.fr))</p>
 * <p>Louis Pasteur University - Strasbourg - France</p>
 * @author Emil Ivov (http://www.emcho.com)
 * @version 1.1
 *
 */
class CallDispatcher
    implements CallListener
{
    private static final Console console =
        Console.getConsole(CallDispatcher.class);

    /**
     * All currently active calls.
     */
    Hashtable calls = new Hashtable();


    Call createCall(Dialog dialog,
                    Request initialRequest
                    )
    {
        try {
            console.logEntry();
            Call call = null;
            if (dialog.getDialogId() != null) {
                call = findCall(dialog);
            }
            if (call == null) {
                call = new Call();
            }
            call.setDialog(dialog);
            call.setInitialRequest(initialRequest);
//            call.setState(Call.DIALING);
            calls.put(new Integer(call.hashCode()), call);
            if (console.isDebugEnabled()) {
                console.debug("created call" + call);
            }
            call.addStateChangeListener(this);
            return call;
        }
        finally {
            console.logExit();
        }
    }

    Call getCall(int id)
    {
        return (Call) calls.get(new Integer(id));
    }


    /**
     * Find the call that contains the specified dialog.
     * @param dialog the dialog whose containg call is to be found
     * @return the call that contains the specified dialog.
     */
    Call findCall(Dialog dialog)
    {
        try {
            console.logEntry();
            if (dialog == null) {
                return null;
            }
            synchronized (calls) {
                Enumeration enum = calls.elements();
                while (enum.hasMoreElements()) {
                    Call item = (Call) enum.nextElement();
                    if (item.getDialog().getCallId().equals(dialog.getCallId())) {
                        return item;
                    }
                }
            }
            return null;
        }
        finally {
            console.logExit();
        }
    }

    /**
     * Find the call with the specified CallID header value.
     * @param callID the CallID header value of the searched call.
     * @return the call with the specified CallID header value.
     */
    Call findCall(String callId)
    {
        try {
            console.logEntry();
            if (callId == null) {
                return null;
            }
            synchronized (calls) {
                Enumeration enum = calls.elements();
                while (enum.hasMoreElements()) {
                    Call item = (Call) enum.nextElement();
                    if (item.getDialog().getCallId().equals(callId)) {
                        return item;
                    }
                }
            }
            return null;
        }
        finally {
            console.logExit();
        }
    }


    public Object[] getAllCalls()
    {
        return calls.keySet().toArray();
    }

    private void removeCall(Call call)
    {
        try {
            console.logEntry();
            if (console.isDebugEnabled()) {
                console.debug("removing call" + call);
            }
            calls.remove(new Integer(call.getID()));
        }
        finally {
            console.logExit();
        }
    }

//================================ DialogListener =================
    public void callStateChanged(CallStateEvent evt)
    {
        if (evt.getNewState().equals(Call.DISCONNECTED)) {
            removeCall(evt.getSourceCall());
        }
    }
}