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February 2007
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2007.02.22 12:23 "Re: Patch: Support for reading single-strip files > 2Gb", by Andrey Kiselev
On Tue, Feb 20, 2007 at 01:52:17PM -0800, Matt Hancher wrote: > As noted in bug 890, libtiff does not currently support reading strips > larger than 2Gb. In practice this is only a problem because Photoshop > likes to save files in single strips. > > That bug report suggests that this is difficult to fix because the > strip API relies on the value -1 in tsize_t fields. This is actually > not a problem. Libtiff is already spoofing the strip size of large > single-strip files, so when you're invoking the strip APIs you're > working with much smaller numbers. In fact, as far as I can tell you > can get libtiff to read these tiff files just fine with two small > tweaks that don't affect the external API a bit. > > I have attached a patch against the CVS head. The first change > involves a downcast to tsize_t in a comparison, presumably to avoid a > warning; I just upcast the other argument to uint32 instead. The > second change involves a local copy of a uint32 value which was being > held locally in a tsize_t by mistake. Matt, I have applied your patch along with few more changes in the same direction. It seems that bug #890 now fixed. Thanks! Best regards, Andrey -- Andrey V. Kiselev ICQ# 26871517