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Re: Why do I need a QTCanvas (JCanvas) for audio?

aNt,
hmm.. did you ever try this w/ a video file???
ie where you just want to play and get some stats from the file, but not
actually display it??

I'll look at trying what you suggest
Jennifer

On Fri, 7 Feb 2003, aNt wrote:

> Well I the code I just send works with streaming movies also. I have never
> had a problem. Bill told us how to do this on the list a long time ago I
> think.. Its a god send :)
>
> You can get all the media objects 'Movie, Tracks' etc etc from you QTPlayer.
> And if your get the file as I do it can be from anywhere URL, Local,
> streaming whatever quicktime needs (even the live shoutcast streams work).
> We where messing around here at 'tomato' and found u could fool the player
> with a DataInputStream also :) v.cool
>
> Odd thing I found was it also worked on Windows just great :)
>
> Tops
>
> aNt
>
>
> > I saw this with streaming files - a known old bug-
> > that you could only "play" a streaming file if
> > it was "displayed"... I am not sure if that was ever fixed...
> >
> > but I never saw this problem for non-streaming files...
> >
> > Jennifer
> >
> > On Thu, 6 Feb 2003, Noel Murphy wrote:
> >
> >> Today I found a peculiar problem where my audio only files (.wav, or .mov
> >> with only an audio track), would only play a few seconds of audio and then
> >> go silent. What I discovered is that they continue to play, and reach the
> >> end like normal but you can no longer hear it.
> >>
> >> I then took the "PlayMovie" example right from the Apple developer website,
> >> and striped it down to the code below.
> >> Why is it that I need a QTCanvas in order to play an audio only file?? If I
> >> uncomment the 3 lines containing the myQTCanvas variable, I can hear the
> >> whole .wav file playing. If I leave them commented, it plays about 3 seconds
> >> and goes silent.
> >> Is this a bug?
> >> I'm using windows 2000, JDK 1.3.1_06
> >>
> >>
> >> Noel Murphy
> >>
> >> /*
> >> * QuickTime for Java SDK Sample Code
> >>
> >> Usage subject to restrictions in SDK License Agreement
> >> * Copyright: ) 1996-1999 Apple Computer, Inc.
> >>
> >> */
> >> public class PlayMovie extends Frame implements Errors {
> >> public static void main (String args[]) {
> >> try {
> >> QTSession.open();
> >> // make a window and show it - we only have one window/one movie at a
> >> time
> >> PlayMovie pm = new PlayMovie("QT in Java");
> >> pm.show();
> >> pm.toFront();
> >> } catch (QTException e) {
> >> // at this point we close down QT if an exception is generated because it
> >> means
> >> // there was a problem with the initialization of QT>
> >> e.printStackTrace();
> >> QTSession.close ();
> >> }
> >> }
> >>
> >> public PlayMovie (String title) {
> >> super (title);
> >> // myQTCanvas = new QTCanvas();
> >>
> >> // add(myQTCanvas);
> >> addWindowListener(new WindowAdapter () {
> >> public void windowClosing (WindowEvent e) {
> >> goAway();
> >> }
> >>
> >> public void windowClosed (WindowEvent e) {
> >> System.exit(0);
> >> }
> >> });
> >>
> >> createNewMovieFromURL("C:\\venus.wav");
> >> }
> >>
> >> private QTDrawable myPlayer;
> >> private Movie m;
> >> private QTCanvas myQTCanvas;
> >>
> >> // This will resize the window to the size of the new movie
> >> public void createNewMovieFromURL (String theURL) {
> >> try {
> >> QTFile qtFile = new QTFile(new File(theURL));
> >> m = Movie.fromFile(OpenMovieFile.asRead(qtFile));
> >>
> >> myPlayer = new MoviePlayer (m);
> >>
> >> // myQTCanvas.setClient (myPlayer, true);
> >>
> >> // this will set the size of the enclosing frame to the size of the
> >> incoming movie
> >> pack();
> >>
> >> //no user control over MoviePlayer or MoviePresenter so set rate
> >> if (true)
> >> ((Playable)myPlayer).setRate(1);
> >>
> >> } catch (QTException err) {
> >> err.printStackTrace();
> >> }
> >> }
> >>
> >> public static void goAway () {
> >> QTSession.close();
> >> System.exit(0);
> >> }
> >> }
> >> _______________
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References: 
 >Re: Why do I need a QTCanvas (JCanvas) for audio? (From: aNt <email@hidden>)



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