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Jskad/source/org/thdl/savant/SoundPanel.java
dchandler eec991f735 Added copyright boilerplate. 
Now using reflection API to invoke Java 1.4-specific functionality.  Thus, Savant now builds on my Java 1.3.1_04 box.
2002-09-28 14:42:01 +00:00

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/*
The contents of this file are subject to the THDL Open Community License
Version 1.0 (the "License"); you may not use this file except in compliance
with the License. You may obtain a copy of the License on the THDL web site
(http://www.thdl.org/).
Software distributed under the License is distributed on an "AS IS" basis,
WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
License for the specific terms governing rights and limitations under the
License.
The Initial Developer of this software is the Tibetan and Himalayan Digital
Library (THDL). Portions created by the THDL are Copyright 2001 THDL.
All Rights Reserved.
Contributor(s): ______________________________________.
*/
/*-----------------------------------------------------------------------*/
package org.thdl.savant;
import java.util.*;
import java.net.*;
import javax.media.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.event.*;
/*-----------------------------------------------------------------------*/
public class SoundPanel extends Panel implements ControllerListener
{
private EventListenerList listenerList = new EventListenerList();
public URL mediaURL;
private Vector orderStartID, orderEndID;
private Stack pileStart, pileEnd;
private Hashtable hashStart, hashEnd;
private Player player = null;
private Component visualComponent = null;
private Component controlComponent = null;
private Panel panel = null;
private JPanel vPanel = null;
private Container parent = null;
private java.util.Timer timer = null;
private Time stopTime = null;
private Time pauseTime = null;
private boolean stillLoadingVideo = false;
private boolean isMediaAudio = false;
private boolean isSized = false;
private Float to = null;
/*-----------------------------------------------------------------------*/
public SoundPanel(Container p, URL sound, String starts, String ends, String ids) {
parent = p;
System.out.println("soundpanel - "+sound.toString());
mediaURL = sound;
String TAB_STARTS = starts;
String TAB_ENDS = ends;
String TAB_IDS = ids;
hashStart = new Hashtable();
hashEnd = new Hashtable();
pileStart = new Stack();
pileEnd = new Stack();
StringTokenizer stIDS = new StringTokenizer(TAB_IDS, ",");
StringTokenizer stSTARTS = new StringTokenizer(TAB_STARTS, ",");
StringTokenizer stENDS = new StringTokenizer(TAB_ENDS, ",");
while ((stIDS.hasMoreTokens()) && (stSTARTS.hasMoreTokens()) && (stENDS.hasMoreTokens())) {
String sID = stIDS.nextToken();
String sStart = stSTARTS.nextToken();
String sEnd = stENDS.nextToken();
try {
Float start = new Float(sStart);
hashStart.put(sID, start);
} catch (NumberFormatException err) {
hashStart.put(sID, new Float(0));
}
try {
Float end = new Float(sEnd);
hashEnd.put(sID, end);
} catch (NumberFormatException err) {
hashEnd.put(sID, new Float(0));
}
}
Vector saveOrder = new Vector();
for (Enumeration e = hashStart.keys() ; e.hasMoreElements() ;) {
Object o = e.nextElement();
saveOrder.addElement(o);
}
orderStartID = new Vector();
while (saveOrder.size() > 0) {
int num = getMinusStart(saveOrder);
orderStartID.addElement(saveOrder.elementAt(num));
saveOrder.removeElementAt(num);
}
saveOrder = new Vector();
for (Enumeration e = hashEnd.keys() ; e.hasMoreElements() ;) {
Object o = e.nextElement();
saveOrder.addElement(o);
}
orderEndID = new Vector();
while (saveOrder.size() > 0) {
int num = getMinusEnd(saveOrder);
orderEndID.addElement(saveOrder.elementAt(num));
saveOrder.removeElementAt(num);
}
}
public void destroy() {
player.close();
}
public void stop() {
player.stop();
player.deallocate();
}
public void start() {
openPlayer();
}
private int getMinusStart(Vector v) {
int index = 0;
String first = (String)v.elementAt(index);
Float minus = (Float)hashStart.get(first);
for (int i=0;i<v.size();i++) {
String s = (String)v.elementAt(i);
Float f = (Float)hashStart.get(s);
if (minus.floatValue() > f.floatValue()) {
minus = f;
index = i;
}
}
return index;
}
private int getMinusEnd(Vector v) {
int index = 0;
String first = (String)v.elementAt(index);
Float minus = (Float)hashEnd.get(first);
for (int i=0;i<v.size();i++) {
String s = (String)v.elementAt(i);
Float f = (Float)hashEnd.get(s);
if (minus.floatValue() > f.floatValue()) {
minus = f;
index = i;
}
}
return index;
}
public void addAnnotationPlayer(AnnotationPlayer ap)
{
listenerList.add(AnnotationPlayer.class, ap);
}
public void removeAnnotationPlayer(AnnotationPlayer ap)
{
listenerList.remove(AnnotationPlayer.class, ap);
}
public Component popVisualComponent()
{
vPanel.remove(visualComponent);
invalidate();
validate();
repaint();
return visualComponent;
}
public void restoreVisualComponent()
{
vPanel.add("Center", visualComponent);
invalidate();
validate();
repaint();
}
public Component getVisualComponent()
{
return visualComponent;
}
public Component getControlComponent()
{
return controlComponent;
}
/*-----------------------------------------------------------------------*/
public boolean cmd_isSized() {
return isSized;
}
public boolean cmd_isRealized() {
return player.getState() == Controller.Realized;
}
public String cmd_firstS() {
return (String)orderStartID.elementAt(0);
}
public boolean cmd_stop() {
if (player == null)
return false;
try {
player.stop();
return true;
} catch (NotRealizedError err) {
System.out.println("NotRealizedError");
return false;
}
}
public boolean cmd_isID(String theID) {
System.out.println(hashStart.containsKey(theID));
return hashStart.containsKey(theID);
}
public boolean cmd_playFrom(String fromID) {
if (stillLoadingVideo)
return false;
Float from = (Float)hashStart.get(fromID);
// String toID = (String)orderEndID.elementAt(orderEndID.size()-1);
// Float to = (Float)hashEnd.get(toID);
if (play(from, null))
return true;
else
return false;
}
public boolean cmd_playS(String fromID) {
if (stillLoadingVideo)
return false;
Float from = (Float)hashStart.get(fromID);
Float to = (Float)hashEnd.get(fromID);
if (play(from, to))
return true;
else
return false;
}
public void cmd_nextEvent() {
Float when = new Float(when());
if (!pileStart.empty()) {
String id = (String)pileStart.peek();
Float f = (Float)hashStart.get(id);
if (when.floatValue() >= f.floatValue()) {
id = (String)pileStart.pop();
fireStartAnnotation(id);
}
}
if (!pileEnd.empty()) {
String id = (String)pileEnd.peek();
Float f = (Float)hashEnd.get(id);
if (when.floatValue() >= f.floatValue()) {
id = (String)pileEnd.pop();
fireStopAnnotation(id);
}
}
}
/*-----------------------------------------------------------------------*/
private void vide_Pile() {
while (!pileEnd.empty()) { //vider la pile des items qui ne sont pas
String id = (String)pileEnd.pop(); //encore fini
if (pileStart.search(id) == -1) {
fireStopAnnotation(id);
}
}
}
private void remplisPileStart(Float start, Float end) {
vide_Pile();
pileStart.removeAllElements();
pileEnd.removeAllElements();
for (int i=orderEndID.size()-1; i!=-1; i--) {
String id = (String)orderEndID.elementAt(i);
Float f = (Float)hashEnd.get(id);
if ((f.floatValue() > start.floatValue()) && (f.floatValue() <= end.floatValue())) {
pileEnd.push(id);
}
}
for (int i=orderStartID.size()-1; i!=-1; i--) {
String id = (String)orderStartID.elementAt(i);
Float f = (Float)hashStart.get(id);
if ((f.floatValue() >= start.floatValue()) && (f.floatValue() < end.floatValue())) {
pileStart.push(id);
}
}
}
private void fireStartAnnotation(String id)
{
//see javadocs on EventListenerList for how following array is structured
Object[] listeners = listenerList.getListenerList();
for (int i = listeners.length-2; i>=0; i-=2)
{
if (listeners[i]==AnnotationPlayer.class)
((AnnotationPlayer)listeners[i+1]).startAnnotation(id);
}
}
private void fireStopAnnotation(String id)
{
//see javadocs on EventListenerList for how following array is structured
Object[] listeners = listenerList.getListenerList();
for (int i = listeners.length-2; i>=0; i-=2)
{
if (listeners[i]==AnnotationPlayer.class)
((AnnotationPlayer)listeners[i+1]).stopAnnotation(id);
}
}
/*-----------------------------------------------------------------------*/
private String when() {
if (player == null)
return "-1";
if (player.getState() != Controller.Started)
return "-1";
long currTime = player.getMediaNanoseconds();
Float time = new Float(currTime);
float f = (time.floatValue() / 1000000000);
return Float.toString(f);
}
private boolean play(Float from, Float to) {
if (player == null)
return false;
final Time startTime = new Time((long)(from.floatValue() * 1000000000));
try {
if (player.getState() == Controller.Started)
player.stop();
while (player.getState() == Controller.Unrealized)
;
// player.stop();
if (to == null) {
stopTime = null;
player.setStopTime(Clock.RESET);
} else {
stopTime = new Time((long)(to.floatValue() * 1000000000));
player.setStopTime(stopTime);
}
player.setMediaTime(startTime);
player.prefetch();
player.start();
return true;
} catch(NotRealizedError err) {
System.out.println("NotRealizedError");
return false;
}
}
/*-----------------------------------------------------------------------*/
public void openPlayer() {
try {
player = Manager.createPlayer(mediaURL);
player.addControllerListener(this);
} catch (javax.media.NoPlayerException e) {
System.err.println("noplayer exception");
e.printStackTrace();
return;
} catch (java.io.IOException ex) {
System.err.println("IO exception");
ex.printStackTrace();
return;
}
if (player != null)
player.realize();
}
public synchronized void controllerUpdate(ControllerEvent event) {
if (player == null)
return;
if (event instanceof RealizeCompleteEvent) {
System.out.println("received RealizeCompleteEvent event");
if (visualComponent == null) {
if (panel == null) {
setLayout(new GridLayout(1,1));
vPanel = new JPanel();
vPanel.setLayout( new BorderLayout() );
if ((visualComponent = player.getVisualComponent())!= null)
vPanel.add("Center", visualComponent);
else {
isMediaAudio = true;
stillLoadingVideo = false;
}
if (!stillLoadingVideo)
{
if ((controlComponent = player.getControlPanelComponent()) != null) {
if (visualComponent == null) //no video
vPanel.setPreferredSize(new Dimension(400,25));
vPanel.add("South", controlComponent);
}
}
add(vPanel);
}
}
parent.invalidate();
parent.validate();
parent.repaint();
isSized = true;
if (stillLoadingVideo)
player.start();
} else if (event instanceof StartEvent) {
StartEvent se = (StartEvent)event;
Time t = se.getMediaTime();
long longt = t.getNanoseconds();
Float from = new Float(longt);
float f = (from.floatValue() / 1000000000);
from = new Float(f);
t = player.getStopTime();
longt = t.getNanoseconds();
to = new Float(longt);
f = (to.floatValue() / 1000000000);
to = new Float(f);
remplisPileStart(from, to);
if (timer != null)
{
timer.cancel();
timer = null;
}
timer = new java.util.Timer(true);
timer.schedule(new TimerTask() {
public void run() {
//this is specifically for the MPG stop time bug
if (stopTime != null)
if (player.getMediaTime().getNanoseconds() > stopTime.getNanoseconds())
player.stop();
cmd_nextEvent();
}}, 0, 15);
} else if (event instanceof StopEvent) {
pauseTime = player.getMediaTime();
/*messy problems require messy solutions:
if the slider is present, dragging it while playing creates
a RestartingEvent, and if I set the media time here it messes up
and barely plays at all (maybe because it cancels the previously
set media time? - I don't know).
but it seems that if you press the play/pause button on the
control widget, then you need to set the media time upon stop
(probably because of problem noted below, namely that you get
weird results if you do player.start() without setting the media
time.*/
if (!(event instanceof RestartingEvent))
player.setMediaTime(pauseTime);
stopTime = null;
System.out.println("received StopEvent");
if (timer != null)
{
timer.cancel();
timer = null;
}
if (stillLoadingVideo)
{
System.out.println("received EndOfMediaEvent");
stillLoadingVideo = false;
player.stop();
if ((controlComponent = player.getControlPanelComponent()) != null) {
if (visualComponent == null) //no video
vPanel.setPreferredSize(new Dimension(400,25));
vPanel.add("South", controlComponent);
}
parent.invalidate();
parent.validate();
parent.repaint();
}
} else if ( event instanceof CachingControlEvent) {
CachingControlEvent e = (CachingControlEvent) event;
System.out.println("got CachingControlEvent: " + e);
if (!isMediaAudio)
stillLoadingVideo = true;
} else if (event instanceof ControllerErrorEvent) {
player = null;
System.err.println("*** ControllerErrorEvent *** " + ((ControllerErrorEvent)event).getMessage());
} else if (event instanceof PrefetchCompleteEvent) {
if (panel != null) {
panel.invalidate();
}
parent.invalidate();
parent.validate();
parent.repaint();
}
}
};
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