Can you please start by telling us what you're trying to do? Have you
tried a different JPEG image? There are JPEG's that won't work. Maybe
you just got something that's not supported. Can you post a little (!) JPEG
that doesn't work? Anyway, I'm wondering why you're working with
ImageReaderFactory and friends at all.

On 09.04.2003 03:16:29 Steve Vanspall wrote:
> Hi there,
> 
> I was wondering if anybody else has this problem.
> 
> If I use either
> 
> ImageReaderFactory.Make(null, inputstream)
> 
> and actually give it the input stream of a file that I know is a JPEG,
> 
> it return null.
> 
> If I try
> 
> reader = new JPEGReader()
> reader.verifySignature(null, new BufferedInputStream(FileInputStream));
> 
> it returns false, indicating that the input doesn't match the epected input
> of a JPEG File
> 
> If I try the same with the GIFReader adn a GIF File, ti works fine
> 
> ImageReaderFactory.Make(null, inputstream) where inputstream is that of a
> gif file
> 
> return a GIfReader
> 
> reader = new GIFReader()
> reader.verifiySignature(null, new BufferedInputStream(new
> FileInputStream(gifFile)));
> 
> return true
> 
> I can then procedd to get the dimensions of the image
> 
> Can anyone suggest what I might be doing wrong, or  a workaroudn for this
> problem


Jeremias Maerki


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