com.sun.media.jfxmediaimpl.NativeMedia Maven / Gradle / Ivy
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* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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package com.sun.media.jfxmediaimpl;
import com.sun.media.jfxmedia.Media;
import com.sun.media.jfxmedia.locator.Locator;
import com.sun.media.jfxmedia.track.Track;
import com.sun.media.jfxmediaimpl.platform.Platform;
import java.util.*;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
/**
* Base {@link Media} implementation class. Platforms will extend this base class.
*
* TODO: Nuke this class, it's not really necessary. At most we should have an impl interface
*/
public abstract class NativeMedia extends Media {
protected final Lock markerLock = new ReentrantLock();
protected final Lock listenerLock = new ReentrantLock();
protected Map markersByName;
protected NavigableMap markersByTime;
protected WeakHashMap markerListeners;
/**
* Constructor.
*
* @param locator The location of the media.
* @throws IllegalArgumentException if locator is
* null.
*/
protected NativeMedia(Locator locator) {
super(locator);
}
// For comparison and player creation, *must* be implemented
public abstract Platform getPlatform();
// --- Tracks: widen access to allow calls from NativeMediaPlayer.
@Override
public void addTrack(Track track) {
super.addTrack(track);
}
// --- Markers ---
public void addMarker(String markerName, double presentationTime){
if (markerName == null) {
throw new IllegalArgumentException("markerName == null!");
} else if (presentationTime < 0.0) {
throw new IllegalArgumentException("presentationTime < 0");
}
markerLock.lock();
try {
if(markersByName == null) {
markersByName = new HashMap();
markersByTime = new TreeMap();
}
markersByName.put(markerName, presentationTime);
markersByTime.put(presentationTime, markerName);
} finally {
markerLock.unlock();
}
fireMarkerStateEvent(true);
}
public Map getMarkers() {
Map markers = null;
markerLock.lock();
try {
if(markersByName != null && !markersByName.isEmpty()) {
markers = Collections.unmodifiableMap(markersByName);
}
} finally {
markerLock.unlock();
}
return markers;
}
public double removeMarker(String markerName) {
if (markerName == null) {
throw new IllegalArgumentException("markerName == null!");
}
double time = -1.0;
boolean hasMarkers = false;
markerLock.lock();
try {
if (markersByName.containsKey(markerName)) {
time = markersByName.get(markerName);
markersByName.remove(markerName);
markersByTime.remove(time);
hasMarkers = (markersByName.size() > 0);
}
} finally {
markerLock.unlock();
}
fireMarkerStateEvent(hasMarkers);
return time;
}
public void removeAllMarkers() {
markerLock.lock();
try {
markersByName.clear();
markersByTime.clear();
} finally {
markerLock.unlock();
}
fireMarkerStateEvent(false);
}
public abstract void dispose();
Map.Entry getNextMarker(double time, boolean inclusive) {
Map.Entry entry = null;
markerLock.lock();
try {
if (markersByTime != null) {
if (inclusive) {
entry = markersByTime.ceilingEntry(time);
} else {
entry = markersByTime.higherEntry(time);
}
}
} finally {
markerLock.unlock();
}
return entry;
}
void addMarkerStateListener(MarkerStateListener listener) {
if (listener != null) {
listenerLock.lock();
try {
if (markerListeners == null) {
markerListeners = new WeakHashMap();
}
markerListeners.put(listener, Boolean.TRUE);
} finally {
listenerLock.unlock();
}
}
}
void removeMarkerStateListener(MarkerStateListener listener) {
if (listener != null) {
listenerLock.lock();
try {
if (markerListeners != null) {
markerListeners.remove(listener);
}
} finally {
listenerLock.unlock();
}
}
}
void fireMarkerStateEvent(boolean hasMarkers) {
listenerLock.lock();
try {
if (markerListeners != null && !markerListeners.isEmpty()) {
for(MarkerStateListener listener : markerListeners.keySet()) {
if(listener != null) {
listener.markerStateChanged(hasMarkers);
}
}
}
} finally {
listenerLock.unlock();
}
}
}