/**
* Creates an empty movie to which frames can be added.
*
* @throws IOException
*/
private void createMovie() throws IOException {
try {
// create the scratch movie
movie =
Movie.createMovieFile(
new QTFile(scratchFile),
kMoviePlayer,
createMovieFileDeleteCurFile | createMovieFileDontCreateResFile);
// create the video track and media
int timeScale = 600;
int noVolume = 0;
videoTrack = movie.newTrack(dim.width, dim.height, noVolume);
videoMedia = new VideoMedia(videoTrack, timeScale);
editing = false;
} catch (QTException ex) {
throw new IOException("caught in createMovie: " + ex.toString()); // $NON-NLS-1$
}
}
/**
* Saves the video to the current scratchFile.
*
* @throws IOException
*/
protected void saveScratch() throws IOException {
if (movie != null && editing)
try {
// end edits and save the scratch
videoMedia.endEdits();
int trackStart = 0;
int mediaTime = 0;
int mediaRate = 1;
videoTrack.insertMedia(trackStart, mediaTime, videoMedia.getDuration(), mediaRate);
editing = false;
OpenMovieFile outStream = OpenMovieFile.asWrite(new QTFile(scratchFile));
movie.addResource(outStream, movieInDataForkResID, scratchFile.getName());
outStream.close();
movie = null;
OSPLog.finest(
"saved " + frameCount + " frames in " + scratchFile); // $NON-NLS-1$ //$NON-NLS-2$
} catch (QTException ex) {
throw new IOException("caught in saveScratch: " + ex.toString()); // $NON-NLS-1$
}
}
// use a file input stream to make dragging faster as the movie is comletetly loaded into memory
// this is not required for any other reason
private static QTPlayer makePlayer(QTFile f) throws IOException, QTException {
QTDrawable d = QTFactory.makeDrawable(new FileInputStream(f), kDataRefFileExtensionTag, "mov");
Movie m = ((QTPlayer) d).getMovieController().getMovie();
m.getTimeBase().setFlags(loopTimeBase);
return (QTPlayer) d;
}