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

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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