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April 2009
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2009.04.16 13:39 "Re: Re garding TIFFRewriteDirectory", by Frank Warmerdam
Munmun wrote: > Hello, > > I am using Libtiff version 4.0.0 in my application. I have a requirement of > updating frames and custom tags for a tiff image. I update a frame using > TIFFRewriteDirectory function. If i dont use this function the image gets > corrupted. For a 16 bit tiff image, this approach has no problem. For 8 bit > tiff image, if i update a frame and call TIFFRewriteDirectory, the frame > does not get updated. If i do not call TIFFRewriteDirectory, the frame gets > updated but the file gets corrupted. > I am not sure whether the approach which i have taken is correct. Any > suggestions are welcome. Munmun, It would be helpful if you could provide a minimal code example and an input file that demonstrate the effects you are encountering. I might well need to run things in the debugger to analyse the problem. Best regards, -- ---------------------------------------+-------------------------------------- I set the clouds in motion - turn up | Frank Warmerdam, warmerdam@pobox.com light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush | Geospatial Programmer for Rent