Re: [Openexr-devel] EXR file killing windows library

[Charles Henrich]

Great!  Thanks Florian! 

> Hi Charles,
> 
> you may want to try using a newer version of the OpenEXR libraries.  Drew
> will officially release  1.0.7 as soon as Savannah works again.
> 
> Because the PIZ-compressed form of the single black pixel is longer than the
> original data, the pixel is stored in the file in uncompressed form.  The
> PIZ compressor adds a header to the compressed data; the size of this header
> offsets any gains you might get from compressing the 6-byte input.
> 
> In recent months, Wojciech Jarosz fixed a couple of bugs that were related
> to uncompressable data.  In some cases the library would try to uncompress
> data that were not compressed.  I have a version of exrdisplay, which I
> compiled on 07/16/03 (before Wojciech's fixes, which were checked into the
> ILM-internal code base on 08/15/03), and it fails to read your test file.
> Recently compiled versions of exrdisplay read the test file correctly.
> 
> Florian
> 
> 
> Charles Henrich wrote:
> > 
> > I have this exr file I've generated which reads fine in Linux, but
> > apparently causes the windows libraries to dump.  Its a single black pixel
> > image with the data window sized appropriately.
> > 
> > test.exr:
> > 
> > file format version: 2 channels (type chlist): B, 16-bit floating-point,
> > sampling 1 1 G, 16-bit floating-point, sampling 1 1 R, 16-bit
> > floating-point, sampling 1 1 compression (type compression): piz
> > dataWindow (type box2i): (0 389) - (0 389) displayWindow (type box2i): (0
> > 0) - (719 389) lineOrder (type lineOrder): increasing y pixelAspectRatio
> > (type float): 1 screenWindowCenter (type v2f): (0 0) screenWindowWidth
> > (type float): 1
> > 
> > File at
> > 
> > http://www.sigbus.com/~henrich/test.exr
> > 
> > Thanks!
> > 
> >        Charles Henrich           Digital Domain          address@hidden
> > 
> >                          http://www.sigbus.com/~henrich
> > 
> > _______________________________________________ Openexr-devel mailing list
> > address@hidden
> > http://mail.nongnu.org/mailman/listinfo/openexr-devel

       Charles Henrich           Digital Domain          address@hidden

                         http://www.sigbus.com/~henrich