/*
* @(#)AMController.java 1.22 02/12/17
*
* Copyright (c) 1996-2002 Sun Microsystems, Inc. All rights reserved.
*/
package com.sun.media.amovie;
import javax.media.*;
import javax.media.protocol.*;
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import java.net.*;
import java.util.Vector;
import javax.media.Format;
import javax.media.format.AudioFormat;
import javax.media.format.VideoFormat;
import javax.media.control.FormatControl;
import com.sun.media.*;
import com.sun.media.util.LoopThread;
import com.sun.media.util.MediaThread;
import com.sun.media.util.jdk12;
import com.sun.media.ui.*;
import com.sun.media.controls.*;
import java.lang.reflect.Method;
import java.lang.reflect.Constructor;
import com.sun.media.JMFSecurity;
import com.sun.media.JMFSecurityManager;
import com.ms.security.PermissionID;
import com.ms.security.PolicyEngine;
/**
* Controller for Active Movie based MPEG player.
*/
public class AMController extends BasicController
{
/*************************************************************************
* Constants
*************************************************************************/
final int MINVOLUME = -10000;
/*************************************************************************
* Variables
*************************************************************************/
// ActiveMovie wrapper
ActiveMovie amovie = null;
protected static final int TRYSET_DONE = 0;
protected static final int TRYSET_CANT = 1;
protected static final int TRYSET_PASTEOM = 2;
private Integer closeLock = new Integer(0);
private Integer sourceLock = new Integer(1);
private boolean closed = false;
private TimeBase amTimeBase = null;
private int appletWindowHandle = 0;
int pwidth = -1;
int pheight = -1;
int outWidth;
int outHeight;
private int width;
private int height;
boolean peerExists = false;
private boolean muted = false;
private boolean outputSizeSet = false;
private EventThread eventThread = null;
private boolean isFileStream = false;
private boolean isRandomAccess = false;
private boolean isSeekable = false;
private boolean hasAudio = false;
private boolean hasVideo = false;
private boolean deallocated = false;
private boolean sourceIsOn = false;
private javax.media.protocol.DataSource source = null;
private PullSourceStream stream = null;
private SourceStream originalStream = null;
private String mpegFile = null;
private com.sun.media.content.video.mpeg.Handler player;
private Component visualComponent = null;
private boolean seekFailed = false;
private Time timeWhenMediaStopped = null;
private boolean mediaTimeChanged = false;
private Time requestedMediaTime = new Time(0);
private Time lastMediaTime = new Time(0);
private int nextRead = 0;
private boolean inEOM = false;
private VideoFormat videoFormat = null;
private AudioFormat audioFormat = null;
private String id = "JavaActiveMovie_" + hashCode();
// Caching related
private boolean blockedOnRead = false;
private Thread blockThread = null;
private boolean abortingRealize = false;
private boolean setRatePending = false;
private float setRateValue = (float) 1.0;
private GainControl gc = null;
private Control [] controls = null;
private FormatControl audioControl = null;
private FormatControl videoControl = null;
private static boolean libraryLoaded = false;
private static JMFSecurity jmfSecurity = null;
private static boolean securityPrivelege=false;
private Method m[] = new Method[1];
private Class cl[] = new Class[1];
private Object args[][] = new Object[1][0];
static {
try {
jmfSecurity = JMFSecurityManager.getJMFSecurity();
securityPrivelege = true;
} catch (SecurityException e) {
}
}
/*************************************************************************
* Methods
*************************************************************************/
public AMController(com.sun.media.content.video.mpeg.Handler handler) {
String library = "jmam";
if (!libraryLoaded) {
try {
JMFSecurityManager.loadLibrary(library);
libraryLoaded = true;
} catch (Throwable t) {
throw new RuntimeException("Unable to load native MPEG library");
}
}
player = handler;
}
public void setSource(javax.media.protocol.DataSource s)
throws IncompatibleSourceException {
// Check for PullDataSource
if (s instanceof PullDataSource)
source = s;
else
throw new IncompatibleSourceException("MPEG Controller requires a PullDataSource");
String excMessage = null;
// Check if audio
if (s.getContentType().equalsIgnoreCase("audio.mpeg") ||
s.getContentType().equalsIgnoreCase("audio/mpeg")) {
// If there's an MP3 plugin, don't handle audio here
AudioFormat mp3 = new AudioFormat(AudioFormat.MPEGLAYER3);
AudioFormat linear = new AudioFormat(AudioFormat.LINEAR);
Vector v = PlugInManager.getPlugInList(mp3, linear, PlugInManager.CODEC);
if (v != null && v.size() > 0 &&
!( v.size() == 1 && ((String)v.elementAt(0)).equals("com.ibm.media.codec.audio.ACMCodec"))) {
// Some plug-in already handles MP3 and hence MP2 also
// So this player shouldn't handle it
excMessage = "Handler doesn't play MPEG Audio";
} else {
// Handle only if local file && mp3
MediaLocator ml = s.getLocator();
if (ml == null)
excMessage = "No media locator, cannot handle stream";
else {
String url = ml.toString();
if (url != null && url.endsWith(".mp2")) {
// Don't handle MP2, since its handled by Unknown Handler
excMessage = "Handler doesn't play MPEG Layer 2 audio";
} else {
if (!ml.getProtocol().equals("file"))
excMessage = "Handler only plays local MPEG Audio files";
}
}
}
}
if (excMessage != null)
throw new IncompatibleSourceException("MPEG Handler: " + excMessage);
}
public void setTimeBase(TimeBase tb) throws IncompatibleTimeBaseException {
super.setTimeBase(tb);
// We can't support any other time base
if (tb != null && tb != amTimeBase) {
Log.warning("the mpeg handler cannot handle the given timebase.");
/**
Allow this to silently go through so addController will be
slightly more useful.
--ivg
throw new IncompatibleTimeBaseException("the mpeg handler cannot handle the given timebase.");
*/
}
amTimeBase = tb;
}
public TimeBase getTimeBase() {
if (amTimeBase == null)
amTimeBase = new AMTimeBase( this );
return amTimeBase;
}
public boolean isConfigurable() {
return false;
}
private void updateControls(ActiveMovie amovie) {
if (hasAudio) {
audioFormat = new AudioFormat(AudioFormat.MPEG);
}
if (hasVideo) {
Dimension size = new Dimension(amovie.getVideoWidth(),
amovie.getVideoHeight());
videoFormat = new VideoFormat(VideoFormat.MPEG,
size,
Format.NOT_SPECIFIED,
Format.byteArray,
Format.NOT_SPECIFIED);
}
}
public Control [] getControls() {
int n = 0;
if (hasAudio) n++;
if (audioFormat != null) n++;
if (videoFormat != null) n++;
controls = new Control[n];
n = 0;
if (hasAudio) {
if (gc == null) {
gc = new GCA();
}
controls[n++] = gc;
}
if (audioFormat != null) {
if (audioControl == null) {
audioControl = new FormatAdapter(audioFormat,
new Format[] {audioFormat},
true,
false,
false);
}
controls[n++] = audioControl;
}
if (videoFormat != null) {
if (videoControl == null) {
videoControl = new FormatAdapter(videoFormat,
new Format[] {videoFormat},
true,
false,
false);
}
controls[n++] = videoControl;
}
return controls;
}
private ActiveMovie createActiveMovie(javax.media.protocol.DataSource s) {
URL url = null;
if (s == null)
return null;
MediaLocator ml = s.getLocator();
if (ml != null) {
try {
url = ml.getURL();
} catch (MalformedURLException e) {
ml = null; // It's possible that its not a URL
// Bug reported after beta3.
}
}
if (ml != null && ml.getProtocol().equals("file")) {
int indexPipe;
mpegFile =
com.sun.media.protocol.file.DataSource.getFileName(ml);
isFileStream = true;
isRandomAccess = true;
isSeekable = true;
ActiveMovie am = new ActiveMovie(this, mpegFile);
hasVideo = am.hasVideo();
hasAudio = am.hasAudio();
updateControls(am);
return am;
} else {
// Can only handle file: for MPEG_AUDIO
if (s.getContentType().equalsIgnoreCase("audio.mpeg") ||
s.getContentType().equalsIgnoreCase("audio/mpeg"))
return null;
// Its a data source other than file. Lets open a stream
if (s instanceof PullDataSource) {
PullSourceStream [] streams =
(PullSourceStream []) ((PullDataSource)s).getStreams();
if (streams != null && streams.length > 0) {
stream = streams[0];
originalStream = stream;
if (stream instanceof Seekable) {
isSeekable = true;
// ((Seekable)stream).seek(0);
// Is it a random access stream?
if (((Seekable)stream).isRandomAccess())
isRandomAccess = true;
if (ml != null && ml.getProtocol().startsWith("http") &&
url != null) {
isRandomAccess = false;
}
}
ActiveMovie am = new ActiveMovie(this, (PullSourceStream)stream,
isRandomAccess,
originalStream.getContentLength());
hasVideo = am.hasVideo();
hasAudio = am.hasAudio();
updateControls(am);
return am;
}
}
return null;
}
}
/****************************************************************
* Stream related calls made from native code
****************************************************************/
public int canRead(int bytes) {
return bytes;
}
public long canSeek(long seekTo) {
// TODO: Pause the controller if seek will block
return seekTo;
}
public long seek(long seekTo) {
if (abortingRealize) {
//System.err.println("seek.0");
return 0;
}
synchronized (sourceLock) {
if (stream instanceof Seekable && sourceIsOn) {
//System.err.println("seek.1");
// Don't seek if already there.
if (((Seekable)stream).tell() == seekTo)
return seekTo;
if (((Seekable)stream).isRandomAccess()) {
long seeked = ((Seekable)stream).seek(seekTo);
//System.err.println("Seeked = " + seekTo);
return seeked;
} else if (seekTo == 0)
return ((Seekable)stream).seek(seekTo);
}
}
//System.err.println("seek.2");
return 0;
}
public int read(byte [] data, int offset, int length) {
if (abortingRealize)
return -1;
/*
if (canRead(length) == -1)
return -1;
*/
if (nextRead == -2) {
nextRead = 0;
return -2;
}
synchronized (sourceLock) {
if (stream != null && sourceIsOn) {
try {
int readBytes = stream.read(data, offset, length);
return readBytes;
} catch (IOException ioe) {
sendEvent(new ConnectionErrorEvent(this, ioe.getMessage()));
return -1;
}
} else
return -1;
}
}
protected boolean doRealize() {
abortingRealize = false;
if (amovie != null) {
if (amTimeBase instanceof AMTimeBase)
amTimeBase = null;
amovie.kill();
amovie.dispose();
amovie = null;
}
startSource(true, true);
synchronized (closeLock) {
amovie = createActiveMovie(source);
if (amovie == null)
return false;
if (!amovie.isRealized()) {
amovie = null;
return false;
}
if (abortingRealize) {
doDeallocate();
amovie.dispose();
amovie = null;
return false;
}
}
try {
amovie.amStopWhenReady();
amovie.doneRealize();
if (amTimeBase == null)
amTimeBase = new AMTimeBase( this );
setMediaLength((long)(amovie.getDuration() * 1e9));
amovie.setVisible(0);
startSource(false, false);
} catch (Throwable t) {
return false;
}
return true;
}
protected void abortRealize() {
// TODO: Abort downloading if caching is enabled
// System.err.println("AMController.abortRealize()");
abortingRealize = true;
startSource(false, true);
}
protected void abortPrefetch() {
// System.err.println("AMController.abortPrefetch()");
startSource(false, true);
}
protected boolean doPrefetch() {
if (amovie == null)
if (!doRealize())
return false;
// If activemovie was recreated, reattach the AM window to java panel
if (amovie != null && visualComponent != null && peerExists) {
setOwner(visualComponent);
}
return true;
}
// Called from a separate thread called TimedStart thread.
protected final void doStart() {
GainControl gc;
if (amovie == null)
doPrefetch();
startSource(true, false);
amovie.restart();
if (setRatePending) {
amovie.setRate(setRateValue);
setRatePending = false;
if ((float) amovie.getRate() != setRateValue) {
sendEvent(new RateChangeEvent(this, (float) amovie.getRate()));
}
}
// Restart the download thread.
if (mediaTimeChanged) {
int returnVal = trySetMediaTime(requestedMediaTime);
if (returnVal == TRYSET_CANT) {
// Couldn't set the media time.
super.stop();
sendEvent((StopEvent) new SeekFailedEvent(this, Started,
Prefetched,
getTargetState(),
getMediaTime()));
return;
} else if (returnVal == TRYSET_PASTEOM) {
// Seeking beyond EOM
super.stop();
sendEvent(new EndOfMediaEvent(this, Started, Prefetched,
getTargetState(), getMediaTime()));
return;
}
}
// We've succeeded in setting the media time.
mediaTimeChanged = false;
if ((gc = player.getGainControl()) != null)
amovie.setVolume((int)(gc.getDB() * 100));
amovie.amRun();
if (!peerExists)
amovie.setVisible(0);
if (gc != null)
muteChange(gc.getMute());
if (eventThread == null) {
if ( /*securityPrivelege && */ (jmfSecurity != null) ) {
String permission = null;
try {
if (jmfSecurity.getName().startsWith("jmf-security")) {
permission = "thread";
jmfSecurity.requestPermission(m, cl, args,
JMFSecurity.THREAD);
m[0].invoke(cl[0], args[0]);
permission = "thread group";
jmfSecurity.requestPermission(m, cl, args,
JMFSecurity.THREAD_GROUP);
m[0].invoke(cl[0], args[0]);
} else if (jmfSecurity.getName().startsWith("internet")) {
PolicyEngine.checkPermission(PermissionID.THREAD);
PolicyEngine.assertPermission(PermissionID.THREAD);
}
} catch (Throwable e) {
if (JMFSecurityManager.DEBUG) {
System.err.println( "Unable to get " + permission +
" privilege " + e);
}
securityPrivelege = false;
// TODO: Do the right thing if permissions cannot be obtained.
// User should be notified via an event
}
}
if ( (jmfSecurity != null) && (jmfSecurity.getName().startsWith("jdk12"))) {
try {
Constructor cons = jdk12CreateThreadAction.cons;
eventThread = (EventThread) jdk12.doPrivM.invoke(
jdk12.ac,
new Object[] {
cons.newInstance(
new Object[] {
EventThread.class,
})});
} catch (Exception e) {
}
} else {
eventThread = new EventThread();
}
}
eventThread.setController(this);
eventThread.start();
}
public void doStop() {
// System.err.println("In doStop()");
super.doStop();
lastMediaTime = getMediaTime();
if (amovie != null && !inEOM) {
amovie.amStop();
//amovie.amPause();
amovie.pause();
}
if (eventThread != null)
eventThread.pause();
startSource(false, false);
if (!isFileStream)
nextRead = -2;
sendEvent((StopEvent)new StopByRequestEvent(this, Started,
Prefetched,
getTargetState(),
getMediaTime()));
}
protected synchronized void doDeallocate() {
// Stop the source
startSource(false, false);
// Restart from Time(0).
timeWhenMediaStopped = getMediaTime();
mediaTimeChanged = true;
requestedMediaTime = new Time(0);
lastMediaTime = timeWhenMediaStopped;
// Kill all threads and ActiveMovie
if (amovie != null) {
blockedOnRead = false;
if (amovie.getVolume() == MINVOLUME) // Is Mute on?
amovie.setVolume(MINVOLUME / 2); // TURN MUTE OFF
amovie.kill();
if (eventThread != null) {
eventThread.kill();
eventThread = null;
}
}
}
public void finalize() {
if (amovie != null)
doClose();
}
protected void doClose() {
if (getState() == Controller.Realizing)
abortRealize();
synchronized (closeLock) {
// Do nothing if already closed.
if (closed)
return;
// Stop all the threads and active movie.
doDeallocate();
// Kill active movie
if (amovie != null) {
amovie.dispose();
amTimeBase = null;
amovie = null;
}
// Disconnect the data source
if (source != null) {
source.disconnect();
}
source = null;
closed = true; // Dont come back!
}
}
public void setMediaTime(Time time) {
super.setMediaTime(time);
synchronized (this) {
requestedMediaTime = time;
mediaTimeChanged = true;
}
if (stream == null) {
amovie.restart();
if (trySetMediaTime(time) == TRYSET_DONE)
mediaTimeChanged = false;
}
}
protected int trySetMediaTime(Time time) {
if (amovie != null) {
long duration = getDuration().getNanoseconds();
long now = time.getNanoseconds();
// Dont know the duration and not seeking to zero?
if (getDuration() == DURATION_UNKNOWN && now != 0)
return TRYSET_CANT;
// Seeking beyond duration?
if (now < 0)
return TRYSET_CANT;
if (now > duration)
return TRYSET_PASTEOM;
if (!isSeekable)
return TRYSET_CANT;
double nowSeconds = (double) now * 1e-9;
if (isRandomAccess) {
amovie.setCurrentPosition(nowSeconds);
return TRYSET_DONE;
} else if (stream != null) {
if (now != 0) {
return TRYSET_CANT;
}
// Seeking to zero should be ok.
((Seekable)stream).seek(0);
amovie.setCurrentPosition( 0 );
return TRYSET_DONE;
}
}
return TRYSET_CANT;
}
public float doSetRate(float factor) {
if (amovie == null)
return 1.0F;
if (factor < 0.1)
factor = 0.1f;
if (factor > 10.0)
factor = 10.0f;
if ((float) amovie.getRate() != factor) {
setRatePending = true;
setRateValue = factor;
}
return factor;
}
Component createVisualComponent() {
Component c = null;
Class visclass = null;
//if (BuildInfo.getJavaVendor().indexOf("icrosoft") > 0) {
try {
visclass = Class.forName("com.sun.media.amovie.MSVisualComponent");
} catch (Throwable t) {
}
//}
if (visclass == null) {
try {
visclass = Class.forName("com.sun.media.amovie.VisualComponent");
} catch (Throwable th) {
return null;
}
}
Class params [] = { AMController.class };
Constructor cons = null;
try {
cons = visclass.getConstructor(params);
Object [] amparam = new AMController[1];
amparam[0] = this;
c = (Component) cons.newInstance(amparam);
return c;
} catch (Throwable tr) {
}
return null;
}
public Component getVisualComponent() {
if (amovie == null)
return null;
if (visualComponent == null) {
if (amovie.getVideoWidth() == 0 ||
amovie.getVideoHeight() == 0)
visualComponent = null;
else {
visualComponent = createVisualComponent();
// Component resize listener
visualComponent.addComponentListener(new ComponentAdapter() {
private int lastWidth = -1;
private int lastHeight = -1;
public void componentResized(ComponentEvent ce) {
if (amovie != null) {
Dimension csize = ce.getComponent().getSize();
if (csize.width == lastWidth &&
csize.height == lastHeight)
return;
lastWidth = csize.width;
lastHeight = csize.height;
outputSizeSet = true;
zoom(lastWidth, lastHeight);
}
}
} );
// End resize listener
}
}
return visualComponent;
}
protected Time eomDuration = DURATION_UNKNOWN;
public Time getDuration() {
// If we've hit the end of media once, use that duration.
if (eomDuration != DURATION_UNKNOWN)
return eomDuration;
if (source instanceof Duration) {
Time d = ((Duration)source).getDuration();
if (d != null && d != Duration.DURATION_UNKNOWN &&
d != Duration.DURATION_UNBOUNDED)
return d;
}
if (amovie == null)
return Duration.DURATION_UNKNOWN;
else {
double amduration = amovie.getDuration(); // Get the duration in secs
if (isRandomAccess)
return new Time((long) (amduration * 1E+9)); // To nanoseconds
else
return DURATION_UNKNOWN;
}
}
/**
* Sets the parent for the activemovie window.
*/
void setOwner(Component parent) {
try {
if (amovie != null && parent != null) {
appletWindowHandle = com.sun.media.util.WindowUtil.getWindowHandle(parent);
if (appletWindowHandle == 0) {
throw new NullPointerException("null peer");
}
amovie.setOwner(appletWindowHandle);
amovie.setVisible(1);
parent.getPreferredSize();
amovie.setWindowPosition(0, 0, outWidth, outHeight);
}
} catch (Throwable t) {
}
}
void sendEOM() {
if (amovie != null) {
amovie.amPause();
amovie.pause();
}
inEOM = true; // ay: To prevent hanging in doStop after EOM
super.stop();
inEOM = false;
Time earlier = eomDuration;
eomDuration = new Time(getMediaTime().getNanoseconds());
startSource(false, false);
sendEvent(new EndOfMediaEvent(this, Started, Prefetched,
getTargetState(), getMediaTime()));
if (earlier == DURATION_UNKNOWN)
sendEvent(new DurationUpdateEvent(this, eomDuration));
if (stream instanceof CachedStream && isRandomAccess == false) {
isRandomAccess = true;
if (amovie != null)
amovie.setSeekable(true);
}
}
public boolean startSource(boolean on, boolean regardless) {
if (sourceIsOn == on)
return true;
synchronized (sourceLock) {
if (regardless) {
try {
if (on) {
source.start();
if (amovie != null)
amovie.stopDataFlow(false);
} else {
if (amovie != null)
amovie.stopDataFlow(true);
source.stop();
}
} catch (Exception ge) {
// System.err.println("Couldn't stop the data source");
return false;
}
sourceIsOn = on;
}
return true;
}
}
private void zoomChanged() {
if (amovie == null)
return;
int width = amovie.getVideoWidth();
int height = amovie.getVideoHeight();
if (peerExists)
amovie.setWindowPosition(0, 0, outWidth, outHeight);
if (pwidth != width || pheight != height) {
pwidth = width;
pheight = height;
//sendSizeChangeEvent(pwidth, pheight, 1.0F);
}
}
private void zoom(int width, int height) {
outWidth = width;
if (outWidth < 120)
outWidth = 120;
outHeight = height;
if (outHeight < 1)
outHeight = 1;
zoomChanged();
}
public boolean audioEnabled() {
if (amovie != null) {
return amovie.hasAudio();
} else
return true;
}
public boolean videoEnabled() {
if (amovie != null)
return amovie.hasVideo();
else
return true;
}
public void gainChange(float g) {
if (amovie != null && !muted && gc != null) {
float dB = gc.getDB();
if (dB > 0.0f) dB = 0.0f;
if (dB < -70f) dB = -100f; // silence is -10000 for active movie
amovie.setVolume( (int)(dB * 100));
}
}
public void muteChange(boolean state) {
if (amovie != null) {
if (state) {
muted = true;
amovie.setVolume(MINVOLUME);
} else {
muted = false;
try {
float dB = gc.getDB();
if (dB > 0) dB = 0;
if (dB < -70f) dB = -100f;
amovie.setVolume( (int)(dB * 100) );
} catch (Exception e) {
}
}
}
}
/*************************************************************************
* INNER CLASSES
*************************************************************************/
class AMTimeBase extends MediaTimeBase {
private AMController controller;
public AMTimeBase(AMController controller) {
this.controller = controller;
}
public long getNanoseconds() {
return getMediaTime();
}
public long getMediaTime() {
long time = 0;
if (controller.amovie != null)
time = controller.amovie.getTime() * 1000;
return time;
}
}
class GCA extends GainControlAdapter {
GCA() {
super(1.0f);
}
public void setMute(boolean mute) {
super.setMute(mute);
muteChange(mute);
}
public float setLevel(float g) {
float level = super.setLevel(g);
gainChange(g);
return level;
}
}
}
/**
* This class used to be an inner class, which is the correct thing to do.
* Changed it to a package private class because of jdk1.2 security.
* For jdk1.2 and above applets, EventThread is created in a
* privileged block using jdk12CreateThreadAction. jdk12CreateThreadAction
* class is unable to create and instantiate an inner class
* in AMController class
*/
class EventThread extends LoopThread {
private AMController amController;
EventThread() {
setName("JMF AMController Event Thread: " + getName());
}
void setController(AMController c) {
amController = c;
}
public boolean process() {
if (amController.amovie == null)
return false;
boolean result = amController.amovie.waitForCompletion();
if (result) {
amController.sendEOM();
pause();
}
try {
sleep(100);
} catch (InterruptedException ie) {
}
return true;
}
}
|
