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Merge pull request #153 from tmciver-basis/master

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Bug fix to DataContentViewerMedia.captureFrames()
This commit is contained in:
adam 2013-02-26 16:41:29 -08:00
commit 27ff6bc2d0
1 changed files with 9 additions and 10 deletions
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15
Core/src/org/sleuthkit/autopsy/corecomponents/DataContentViewerMedia.java
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@ -430,6 +430,8 @@ public class DataContentViewerMedia extends javax.swing.JPanel implements DataCo
PlayBin2 playbin = new PlayBin2("VideoFrameCapture");
playbin.setInputFile(file);
playbin.setVideoSink(videoSink);
// this is necessary to get a valid duration value
playbin.play();
playbin.pause();
playbin.getState();
@ -437,28 +439,25 @@ public class DataContentViewerMedia extends javax.swing.JPanel implements DataCo
// get the duration of the video
TimeUnit unit = TimeUnit.MILLISECONDS;
long myDurationMillis = playbin.queryDuration(unit);
System.out.println("Duration is: " + myDurationMillis);
if (myDurationMillis <= 0) {
return frames;
}
// create a list of timestamps at which to get frames
List<Long> timeStamps = new ArrayList<>();
int numFramesToGet = numFrames;
long frameInterval = myDurationMillis/numFrames;
if (frameInterval < MIN_FRAME_INTERVAL_MILLIS) {
numFramesToGet = 1;
}
for (int i = 0; i < numFramesToGet; ++i) {
System.out.println("Adding timestamp " + i*frameInterval + " ms");
timeStamps.add(i*frameInterval);
}
// for each timeStamp, grap a frame
for (long timeStamp : timeStamps) {
currentImage = null;
for (int i = 0; i < numFramesToGet; ++i) {
long timeStamp = i*frameInterval;
playbin.pause();
playbin.getState();
currentImage = null;
if (!playbin.seek(timeStamp, unit)) {
logger.log(Level.INFO, "There was a problem seeking to " + timeStamp + " " + unit.name().toLowerCase());
}