393 lines
11 KiB
Java
393 lines
11 KiB
Java
/*
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The contents of this file are subject to the THDL Open Community License
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Version 1.0 (the "License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License on the THDL web site
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(http://www.thdl.org/).
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Software distributed under the License is distributed on an "AS IS" basis,
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WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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License for the specific terms governing rights and limitations under the
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License.
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The Initial Developer of this software is the Tibetan and Himalayan Digital
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Library (THDL). Portions created by the THDL are Copyright 2001 THDL.
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All Rights Reserved.
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Contributor(s): ______________________________________.
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*/
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package org.thdl.media;
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import java.util.*;
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import java.net.*;
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import javax.media.*;
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import java.awt.*;
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import javax.swing.*;
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import javax.swing.event.*;
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import org.thdl.util.ThdlDebug;
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/*-----------------------------------------------------------------------*/
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public class SmartJMFPlayer extends SmartMoviePanel implements ControllerListener
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{
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private EventListenerList listenerList = new EventListenerList();
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public URL mediaURL;
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private Player player = null;
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private Component visualComponent = null;
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private Component controlComponent = null;
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private Panel panel = null;
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private JPanel vPanel = null;
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private Container parent = null;
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private java.util.Timer timer = null;
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private Time stopTime = null;
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private Time pauseTime = null;
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private boolean isMediaAudio = false;
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private boolean isSized = false;
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private boolean isRealized = false;
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private boolean isCached = false;
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private Float to = null;
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/*-----------------------------------------------------------------------*/
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public static String getName() {
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return "Java Media Framework";
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}
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public SmartJMFPlayer() {
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super(new GridLayout());
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}
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public SmartJMFPlayer(Container p, URL sound) throws SmartMoviePanelException {
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super( new GridLayout() );
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parent = p;
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loadMovie(sound);
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}
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public void loadMovie(URL sound) throws SmartMoviePanelException {
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if (mediaURL != null) {
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cmd_stop();
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destroy();
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}
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mediaURL = sound;
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start();
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}
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public void setParentContainer(Container c) {
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parent = c;
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}
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public void destroy() throws SmartMoviePanelException {
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if (false)
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throw new SmartMoviePanelException();
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player.close();
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}
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/*-----------------------------------------------------------------------*/
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private void start() {
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try {
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player = Manager.createPlayer(mediaURL);
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player.addControllerListener(this);
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} catch (javax.media.NoPlayerException e) {
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System.err.println("noplayer exception");
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e.printStackTrace();
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ThdlDebug.noteIffyCode();
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return;
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} catch (java.io.IOException ex) {
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System.err.println("IO exception");
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ex.printStackTrace();
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ThdlDebug.noteIffyCode();
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return;
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}
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if (player != null)
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player.realize();
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}
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/*-----------------------------------------------------------------------*/
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public void displayBorders(boolean borders) throws SmartMoviePanelException
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{
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if (false)
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throw new SmartMoviePanelException();
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}
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public void displayController(boolean controller) throws SmartMoviePanelException
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{
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if (false)
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throw new SmartMoviePanelException();
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}
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public boolean isInitialized() {
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return isSized;
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}
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/*-----------------------------------------------------------------------*/
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private void showMediaComponent() {
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if (isRealized && isCached) {
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if (visualComponent == null) {
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if (panel == null) {
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setLayout(new GridLayout(1,1));
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vPanel = new JPanel();
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vPanel.setLayout( new BorderLayout() );
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if ((visualComponent = player.getVisualComponent())!= null)
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vPanel.add("Center", visualComponent);
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else
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isMediaAudio = true;
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if ((controlComponent = player.getControlPanelComponent()) != null) {
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if (visualComponent == null) //no video
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vPanel.setPreferredSize(new Dimension(400,25));
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vPanel.add("South", controlComponent);
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}
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}
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add(vPanel);
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parent.invalidate();
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parent.validate();
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parent.repaint();
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isSized = true;
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}
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}
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}
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public synchronized void controllerUpdate(ControllerEvent event) {
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if (player == null)
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return;
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if (event instanceof RealizeCompleteEvent) {
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System.out.println("received RealizeCompleteEvent event");
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isRealized = true;
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if (mediaURL.getProtocol() == "file") { //if http then wait until entire media is cached
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isCached = true;
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showMediaComponent();
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} else if (isCached) //must be http
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showMediaComponent();
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} else if (event instanceof StartEvent) {
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StartEvent se = (StartEvent)event;
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Time t = se.getMediaTime();
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long longt = t.getNanoseconds();
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Float from = new Float(longt);
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float f = (from.floatValue() / 1000000000);
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from = new Float(f);
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t = player.getStopTime();
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longt = t.getNanoseconds();
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to = new Float(longt);
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f = (to.floatValue() / 1000000000);
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to = new Float(f);
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if (timer != null)
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{
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timer.cancel();
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timer = null;
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}
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timer = new java.util.Timer(true);
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timer.schedule(new TimerTask() {
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public void run() {
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//this is specifically for the MPG stop time bug
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if (stopTime != null)
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if (player.getMediaTime().getNanoseconds() > stopTime.getNanoseconds())
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player.stop();
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}}, 0, 15);
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} else if (event instanceof StopEvent) {
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pauseTime = player.getMediaTime();
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/*messy problems require messy solutions:
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if the slider is present, dragging it while playing creates
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a RestartingEvent, and if I set the media time here it messes up
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and barely plays at all (maybe because it cancels the previously
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set media time? - I don't know).
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but it seems that if you press the play/pause button on the
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control widget, then you need to set the media time upon stop
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(probably because of problem noted below, namely that you get
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weird results if you do player.start() without setting the media
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time.*/
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if (!(event instanceof RestartingEvent)) {
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player.setMediaTime(pauseTime);
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player.prefetch();
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}
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stopTime = null;
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System.out.println("received StopEvent");
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if (timer != null)
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{
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timer.cancel();
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timer = null;
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}
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} else if (event instanceof CachingControlEvent) {
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CachingControlEvent cce = (CachingControlEvent)event;
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CachingControl cc = cce.getCachingControl();
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System.out.println("still caching at " + String.valueOf(cc.getContentProgress()));
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if (!(cc.getContentLength() > cc.getContentProgress())) {
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System.out.println("caching done!!");
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isCached = true;
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if (isRealized)
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showMediaComponent();
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}
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} else if (event instanceof ControllerErrorEvent) {
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player = null;
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System.err.println("*** ControllerErrorEvent *** " + ((ControllerErrorEvent)event).getMessage());
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} else if (event instanceof PrefetchCompleteEvent) {
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if (panel != null) {
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panel.invalidate();
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}
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parent.invalidate();
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parent.validate();
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parent.repaint();
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}
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}
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/*-----------------------------------------------------------------------*/
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public void cmd_stop() throws SmartMoviePanelException {
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if (player == null)
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throw new SmartMoviePanelException("no player");
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try {
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player.stop();
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} catch (NotRealizedError err) {
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throw new SmartMoviePanelException("JMF player not realized");
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}
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}
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public void cmd_playOn() throws SmartMoviePanelException {
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if (player == null) {
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throw new SmartMoviePanelException("no player or video still loading");
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}
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if (player.getState() == Controller.Started)
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return;
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if (pauseTime == null)
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player.setMediaTime(new Time(0.0));
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else
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player.setMediaTime(pauseTime);
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if (player.getTargetState() < Player.Started) {
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player.setStopTime(Clock.RESET);
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player.prefetch();
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}
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player.start();
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}
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public void cmd_playSegment(Integer from, Integer to) throws SmartMoviePanelException {
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if (from == null || player == null)
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throw new SmartMoviePanelException("no player or video still loading");
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final Time startTime = new Time(from.longValue() * 1000000);
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try {
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if (player.getState() == Controller.Started)
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player.stop();
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while (player.getState() == Controller.Unrealized)
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;
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if (to == null) {
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stopTime = null;
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player.setStopTime(Clock.RESET);
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} else {
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stopTime = new Time(to.longValue() * 1000000);
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player.setStopTime(stopTime);
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}
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player.setMediaTime(startTime);
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player.prefetch();
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player.start();
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} catch(NotRealizedError err) {
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throw new SmartMoviePanelException("JMF player not realized");
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}
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}
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/*-----------------------------------------------------------------------*/
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public boolean isPlaying() {
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if (player == null)
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return false;
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if (player.getState() == Controller.Started)
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return true;
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return false;
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}
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public int getCurrentTime() {
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if (player == null)
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return -1;
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if (player.getState() < Controller.Realized)
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return -1;
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long currTime = player.getMediaNanoseconds();
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return new Long(currTime / 1000000).intValue();
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}
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public int getEndTime() {
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Time t = player.getDuration();
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long l = t.getNanoseconds();
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return new Long(l / 1000000).intValue();
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}
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/*-----------------------------------------------------------------------*/
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}
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/*
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After pause the MPEG video and playing it again it gets faster
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Author: vladshtr
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In Reply To: After pause the MPEG video and playing it again it gets faster
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Mar 1, 2001 6:25 PM
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Reply 1 of 1
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The problem is in the setting the Media time.
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The safety way is to always set new media time with the
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following method: setMediaTime(Time time); .... if you want to
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use it after
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-player.stop(); used as real stop you can use setMediaTime(new
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Time(0.0));
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-player.stop(); used as real pause you have to use the
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combination:
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player.stop();
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Time currentTime = player.getMediaTime();
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//........
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player.setMediaTime(currentTime);
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player.start();
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Re: (urgent) when you pause and resume, video plays at rate > 1
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Author: seertenedos
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In Reply To: (urgent) when you pause and resume, video plays at rate > 1
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Aug 11, 2002 11:36 PM
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Reply 1 of 1
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I found a solution for this problem for those that are interested.
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what you have to do is store the time just before you pause and then set the
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time just before you play. here is a copy of my pause and play methods
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// Start the player
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private void play() {
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if (player != null)
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{
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if (pauseTime != null)
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{
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player.setMediaTime(pauseTime);
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}
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if (player.getTargetState() < Player.Started)
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player.prefetch();
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player.start();
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}
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}
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// Pause the player
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private void pause() {
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if (player != null)
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pauseTime = player.getMediaTime();
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player.stop();
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}
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that should solve your pause play problems!
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> The problem is below. It seems quite a few people are
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> having this problem but i have not seen a solution
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> around. I really need a solution to this problem as
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> the whole point of my application is that it plays
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> divx and mpeg videos. At the moment i have divx
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> movies playing through the mpeg demuxer as the avi one
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> stuffed up the audio. I think that is the reason it
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> affects both divx and mpeg. My application is due in
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> one week and my client is not going to be very happy
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> if this problem happens every time they pause then
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> play the video.
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> The player is for divx movies. If anyone knows how to
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> solve this problem or how to make it so you can pause
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> and resume divx movies please respond.
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>
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> Pause and Resume playback.
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> The video plays at a high rate and there is no audio.
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> Problem doesn't appear while seeking.
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>
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>
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>
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>
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*/
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