final String mrl = args[0];
final int period = Integer.parseInt(args[1]) * 1000;
MediaPlayerFactory factory = new MediaPlayerFactory(VLC_ARGS);
MediaPlayer mediaPlayer = factory.newHeadlessMediaPlayer();
mediaPlayer.setSnapshotDirectory(new File(".").getAbsolutePath());
// The sequence for creating the snapshots is...
//
// Start the media
// Wait until playing
// Loop...
// Set the target time
// Wait until the target time is reached
// Pause the media player
// Wait until paused
// Save the snapshot
// Wait until snapshot taken
// Play the media player
//
// The media player must be playing or else the required time changed events
// will not be fired.
try {
Condition<?> playingCondition = new PlayingCondition(mediaPlayer) {
@Override
protected boolean onBefore() {
// You do not have to use onBefore(), but sometimes it is very convenient, and guarantees
// that the required media player event listener is added before your condition is tested
mediaPlayer.startMedia(mrl);
return true;
}
};
playingCondition.await();
long time = period;
for(int i = 0; ; i++) {
// Some special cases here...
//
// 1. The duration may not be available yet, even if the media player is playing
// 2. For some media types it is not possible to set the position past the end - this
// means that you would have to wait for playback to reach the end normally
long duration = mediaPlayer.getLength();
if(duration > 0 && time >= duration) {
break;
}
System.out.println("Snapshot " + i);
Condition<?> timeReachedCondition = new TimeReachedCondition(mediaPlayer, time) {
@Override
protected boolean onBefore() {
mediaPlayer.setTime(targetTime);
return true;
}
};
timeReachedCondition.await();
Condition<?> pausedCondition = new PausedCondition(mediaPlayer) {
@Override
protected boolean onBefore() {
mediaPlayer.pause();
return true;
}
};
pausedCondition.await();
Condition<?> snapshotTakenCondition = new SnapshotTakenCondition(mediaPlayer) {
@Override
protected boolean onBefore() {
mediaPlayer.saveSnapshot();
return true;
}
};
snapshotTakenCondition.await();
playingCondition = new PlayingCondition(mediaPlayer) {
@Override
protected boolean onBefore() {
mediaPlayer.play();
return true;
}
};
playingCondition.await();
time += period;
}
}
catch(UnexpectedErrorConditionException e) {
System.out.println("ERROR!");
}
catch(UnexpectedFinishedConditionException e) {
System.out.println("FINISHED!");
}
System.out.println("All done");
mediaPlayer.release();
factory.release();
}