Hi all ...
When I doing my project using JMF, I used a cloned dataSource(cds) to create a player:
Player p = Manager.createRealizedPlayer(cds);
but When I put the player in the configure state, it cannot be configured.
Does anybody know why? Please help!
Regards.
Lianke
because your variable is declared as Player, but Player hasn't state "Configuring" and "Configured", these two states belong to Processor. and they are before the state "realizing" and "realized"
hi Lanse:
Thanks for your reply. I think I got that wrong.
However, after the player has been realized and when I try to convert a grabbed frame to bufferedImage, the image has Null value.(the code
as follow:)
public void takeSnapshot(){
FrameGrabbingControl fgc = null;
snapshotDs = dataSource.cloneCamSource();
try{
snapshotPlayer = Manager.createRealizedPlayer(snapshotDs);
if(snapshotPlayer != null)
snapshotPlayer.start();
}catch (IOException e) {
JOptionPane.showMessageDialog(this,
"Exception creating snapshotPlayer: " + e.getMessage(), "Error", JOptionPane.WARNING_MESSAGE);
return;
}catch (NoPlayerException e) {
JOptionPane.showMessageDialog(this,
"Exception creating snapshotPlayer: " + e.getMessage(), "Error", JOptionPane.WARNING_MESSAGE);
return;
}catch (CannotRealizeException e) {
JOptionPane.showMessageDialog(this,
"Exception creating snapshotPlayer: " + e.getMessage(), "Error", JOptionPane.WARNING_MESSAGE);
return;
}
playhelper = new StateHelper(snapshotPlayer);
if(!playhelper.realize(10000)){
JOptionPane.showMessageDialog(this,
"cannot realize snapshotPlayer", "Error", JOptionPane.WARNING_MESSAGE);
return;
}
if( snapshotPlayer != null)
fgc = (FrameGrabbingControl)snapshotPlayer.getControl("javax.media.control.FrameGrabbingControl");
else
System.err.println("Cannot get FrameGrabbingControl");
Buffer bufferFrame = fgc.grabFrame();
System.out.println("bufferFrame :"+bufferFrame);
BufferToImage bufferToImage = new BufferToImage((VideoFormat)bufferFrame.getFormat());
System.out.println("bufferToImage :"+bufferToImage);
BufferedImage image = (BufferedImage)bufferToImage.createImage(bufferFrame);
if(image != null)
System.out.println("Successful convert image :"+image);
else
System.out.println("Fail to convert image :" + image);
}
and I got the ouputs from terminal window:
bufferFrame :javax.media.Buffer@9b87f6
bufferToImage :javax.media.util.BufferToImage@140b8fd
Fail to convert image :null
Does anyone know why the image is Null value and how can I fix the problem?
Kinds regards.
Lianke