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Code Issues Releases Wiki Activity

Updated DataContentViewerMedia to use SwingWorker to do updates to progress

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slider and duration label.  Also added code to clear the duration label in
reset method so that duration of previous video does not remain when a new
video is selected.
This commit is contained in:
Tim McIver
2012-12-19 14:58:39 -05:00
parent a2664b3348
commit adae62df4a
1 changed files with 100 additions and 66 deletions
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166
Core/src/org/sleuthkit/autopsy/corecomponents/DataContentViewerMedia.java
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@@ -25,6 +25,7 @@ import java.util.concurrent.CancellationException;
import java.util.logging.Level;
import org.sleuthkit.autopsy.coreutils.Logger;
import javax.swing.BoxLayout;
import javax.swing.SwingUtilities;
import javax.swing.SwingWorker;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
@@ -59,6 +60,7 @@ public class DataContentViewerMedia extends javax.swing.JPanel implements DataCo
private long durationMillis = 0;
private boolean autoTracking = false; // true if the slider is moving automatically
private final Object playbinLock = new Object(); // lock for synchronization of playbin2 player
private VideoProgressWorker videoProgressWorker;
/**
* Creates new form DataContentViewerVideo
@@ -186,6 +188,12 @@ public class DataContentViewerMedia extends javax.swing.JPanel implements DataCo
if (selectedNode == null) {
return;
}
// get rid of any existing videoProgressWorker thread
if (videoProgressWorker != null) {
videoProgressWorker.cancel(true);
videoProgressWorker = null;
}
File file = selectedNode.getLookup().lookup(File.class);
if (file == null) {
@@ -303,15 +311,19 @@ public class DataContentViewerMedia extends javax.swing.JPanel implements DataCo
}
private void reset() {
// reset the progress label text on the event dispatch thread
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
progressLabel.setText(" ");
}
});
synchronized (playbinLock) {
if (playbin2 != null) {
if (playbin2.isPlaying()) {
playbin2.stop();
}
playbin2.setState(State.NULL);
// try {
// Thread.sleep(20); // gstreamer needs to catch up
// } catch (InterruptedException ex) { }
if (playbin2.getState().equals(State.NULL)) {
playbin2.dispose();
}
@@ -397,8 +409,6 @@ public class DataContentViewerMedia extends javax.swing.JPanel implements DataCo
this.jFile = jFile;
}
;
@Override
protected Object doInBackground() throws Exception {
success = false;
@@ -444,7 +454,7 @@ public class DataContentViewerMedia extends javax.swing.JPanel implements DataCo
progressLabel.setText("Error buffering file");
return;
}
ClockTime dur = null;
ClockTime dur = null;
synchronized (playbinLock) {
playbin2.play(); // must play, then pause and get state to get duration.
playbin2.pause();
@@ -454,73 +464,97 @@ public class DataContentViewerMedia extends javax.swing.JPanel implements DataCo
duration = dur.toString();
durationMillis = dur.toMillis();
progressSlider.setMaximum((int) durationMillis);
progressSlider.setMinimum(0);
final String finalDuration;
if (duration.length() == 8 && duration.substring(0, 3).equals("00:")) {
finalDuration = duration.substring(3);
progressLabel.setText("00:00/" + duration);
} else {
finalDuration = duration;
progressLabel.setText("00:00:00/" + duration);
}
synchronized (playbinLock) {
playbin2.play();
}
pauseButton.setText("||");
new Thread(new Runnable() {
private boolean isPlayBinReady() {
synchronized (playbinLock) {
return playbin2 != null && !playbin2.getState().equals(State.NULL);
}
}
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
long positionMillis = 0;
while (positionMillis < durationMillis
&& isPlayBinReady() ) {
ClockTime pos = null;
synchronized (playbinLock) {
pos = playbin2.queryPosition();
}
position = pos.toString();
positionMillis = pos.toMillis();
if (position.length() == 8) {
position = position.substring(3);
}
progressLabel.setText(position + "/" + finalDuration);
autoTracking = true;
progressSlider.setValue((int) positionMillis);
autoTracking = false;
try {
Thread.sleep(20);
} catch (InterruptedException ex) {
}
}
if (finalDuration.length() == 5) {
progressLabel.setText("00:00/" + finalDuration);
progressSlider.setMaximum((int) durationMillis);
progressSlider.setMinimum(0);
final String finalDuration;
if (duration.length() == 8 && duration.substring(0, 3).equals("00:")) {
finalDuration = duration.substring(3);
progressLabel.setText("00:00/" + duration);
} else {
progressLabel.setText("00:00:00/" + finalDuration);
finalDuration = duration;
progressLabel.setText("00:00:00/" + duration);
}
// If it reached the end
if (progressSlider.getValue() == progressSlider.getMaximum()) {
restartVideo();
}
}
public void restartVideo() {
synchronized (playbinLock) {
if (playbin2 != null) {
playbin2.stop();
playbin2.setState(State.READY); // ready to be played again
}
playbin2.play();
}
pauseButton.setText("►");
progressSlider.setValue(0);
pauseButton.setText("||");
videoProgressWorker = new VideoProgressWorker();
videoProgressWorker.execute();
}
}).start();
});
}
}
private class VideoProgressWorker extends SwingWorker<Object, Object> {
private boolean isPlayBinReady() {
synchronized (playbinLock) {
return playbin2 != null && !playbin2.getState().equals(State.NULL);
}
}
public void restartVideo() {
synchronized (playbinLock) {
if (playbin2 != null) {
playbin2.stop();
playbin2.setState(State.READY); // ready to be played again
}
}
pauseButton.setText("►");
progressSlider.setValue(0);
}
@Override
protected Object doInBackground() throws Exception {
long positionMillis = 0;
String finalDuration = "";
while (positionMillis < durationMillis
&& isPlayBinReady() && !isCancelled()) {
ClockTime pos = null;
synchronized (playbinLock) {
pos = playbin2.queryPosition();
}
String position = pos.toString();
positionMillis = pos.toMillis();
if (position.length() == 8) {
position = position.substring(3);
}
String duration = playbin2.queryDuration().toString();
if (duration.length() == 8 && duration.substring(0, 3).equals("00:")) {
finalDuration = duration.substring(3);
progressLabel.setText("00:00/" + duration);
} else {
finalDuration = duration;
progressLabel.setText("00:00:00/" + duration);
}
progressLabel.setText(position + "/" + finalDuration);
autoTracking = true;
progressSlider.setValue((int) positionMillis);
autoTracking = false;
try {
Thread.sleep(20);
} catch (InterruptedException ex) {
throw ex;
}
}
if (finalDuration.length() == 5) {
progressLabel.setText("00:00/" + finalDuration);
} else {
progressLabel.setText("00:00:00/" + finalDuration);
}
// If it reached the end
if (progressSlider.getValue() == progressSlider.getMaximum()) {
restartVideo();
}
return null;
}
}
}