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https://github.com/vanitasvitae/Smack.git
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156 lines
5.2 KiB
Java
156 lines
5.2 KiB
Java
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package org.jivesoftware.jingleaudio.jmf; /**
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* $RCSfile$
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* $Revision: $
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* $Date: 08/11/2006
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* <p/>
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* Copyright 2003-2006 Jive Software.
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* <p/>
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* All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* <p/>
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* http://www.apache.org/licenses/LICENSE-2.0
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* <p/>
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import org.jivesoftware.jingleaudio.jmf.AudioChannel;
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import org.jivesoftware.jingleaudio.jmf.AudioFormatUtils;
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import org.jivesoftware.smackx.jingle.media.JingleMediaSession;
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import org.jivesoftware.smackx.jingle.media.PayloadType;
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import org.jivesoftware.smackx.jingle.nat.TransportCandidate;
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import javax.media.MediaLocator;
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import javax.media.format.AudioFormat;
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import java.io.IOException;
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import java.net.ServerSocket;
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/**
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* This Class implements a complete JingleMediaSession.
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* It sould be used to transmit and receive audio captured from the Mic.
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* This Class should be automaticly controlled by JingleSession.
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* But you could also use in any VOIP application.
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* For better NAT Traversal support this implementation don<EFBFBD>t support only receive or only transmit.
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* To receive you MUST transmit. So the only implemented and functionally methods are startTransmit() and stopTransmit()
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*/
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public class AudioMediaSession extends JingleMediaSession {
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private AudioFormat format;
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private AudioChannel audioChannel;
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/**
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* Creates a org.jivesoftware.jingleaudio.jmf.AudioMediaSession with defined payload type, remote and local candidates
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*
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* @param payloadType Payload of the jmf
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* @param remote The remote information. The candidate that the jmf will be sent to.
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* @param local The local information. The candidate that will receive the jmf
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*/
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public AudioMediaSession(final PayloadType payloadType, final TransportCandidate remote,
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final TransportCandidate local) {
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super(payloadType, remote, local);
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}
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/**
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* Initialize the Audio Channel to make it able to send and receive audio
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*/
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public void initialize() {
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String ip;
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String localIp;
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int localPort;
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int remotePort;
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if (this.getLocal().getSymmetric() != null) {
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ip = this.getLocal().getIp();
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localIp = this.getLocal().getLocalIp();
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localPort = getFreePort();
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remotePort = this.getLocal().getSymmetric().getPort();
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System.out.println(this.getLocal().getConnection() + " " + ip + ": " + localPort + "->" + remotePort);
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} else {
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ip = this.getRemote().getIp();
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localIp = this.getLocal().getLocalIp();
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localPort = this.getLocal().getPort();
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remotePort = this.getRemote().getPort();
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}
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audioChannel = new AudioChannel(new MediaLocator("dsound://"), localIp, ip, localPort, remotePort, AudioFormatUtils.getAudioFormat(this.getPayloadType()));
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}
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/**
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* Starts transmission and for NAT Traversal reasons start receiving also.
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*/
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public void startTrasmit() {
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audioChannel.start();
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}
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/**
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* Set transmit activity. If the active is true, the instance should trasmit.
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* If it is set to false, the instance should pause transmit.
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*
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* @param active
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*/
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public void setTrasmit(boolean active) {
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audioChannel.setTrasmit(active);
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}
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/**
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* For NAT Reasons this method does nothing. Use startTransmit() to start transmit and receive jmf
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*/
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public void startReceive() {
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// Do nothing
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}
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/**
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* Stops transmission and for NAT Traversal reasons stop receiving also.
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*/
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public void stopTrasmit() {
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audioChannel.stop();
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}
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/**
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* For NAT Reasons this method does nothing. Use startTransmit() to start transmit and receive jmf
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*/
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public void stopReceive() {
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// Do nothing
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}
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/**
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* Obtain a free port we can use.
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*
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* @return A free port number.
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*/
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protected int getFreePort() {
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ServerSocket ss;
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int freePort = 0;
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for (int i = 0; i < 10; i++) {
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freePort = (int) (10000 + Math.round(Math.random() * 10000));
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freePort = freePort % 2 == 0 ? freePort : freePort + 1;
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try {
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ss = new ServerSocket(freePort);
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freePort = ss.getLocalPort();
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ss.close();
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return freePort;
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}
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catch (IOException e) {
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e.printStackTrace();
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}
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}
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try {
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ss = new ServerSocket(0);
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freePort = ss.getLocalPort();
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ss.close();
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}
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catch (IOException e) {
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e.printStackTrace();
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}
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return freePort;
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}
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}
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