RE: Crop operation never returns

Not that I can test this on a Mac but someone else may able help. Can
you provide a fully compliable source code with all the included
artifacts? Example: the code would create a rectangular image then do
all your operators.



-----Original Message-----
From: spamania [mailto:Onlogn@...]
Sent: Friday, March 14, 2008 3:34 PM
To: interest@...
Subject: [JAI] Crop operation never returns


Hi all,

I have JAI working OK for the most part, but I'm having a problem
cropping
images using JAI.create().  Here are the steps I'm taking:

1. Read image file from stream into a RenderedOp: RenderedOp image =
JAI.create("stream", is);

2. Create the parameter block (hard-coded w/h values for testing):

ParameterBlockJAI params = new ParameterBlockJAI("crop");
params.addSource(image);

params.setParameter("x", image.getMinX());
params.setParameter("y", image.getMinY());
params.setParameter("width", 50);
params.setParameter("height", 50);

3. Create the crop operation: RenderedOp croppedImage =
JAI.create("crop",
params, null);

4. Save image

These steps work perfectly fine for scale operations, but the call to
JAI.create(...) in step three never returns -- my application hangs and
I
need to abort it.

I am running on Mac OS X 10.5.2 Tiger.  I found one person complaining
of a
similar problem with ROI operations on Mac, but I haven't found any
solutions or workarounds.

Any ideas?

Thanks a million.
nate

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