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November 2005
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2005.11.20 04:31 "Re: libtiff support for Microsoft Office Document Imaging", by Brad Hards
On Wednesday 16 November 2005 01:40 am, Frank Warmerdam wrote: > I would suggest adding a potential #define in tiffconf.h > that is MDI_SUPPORT. Normally it would not be defined. > If defined, then .mdi files magic number is supported > and byte swapping is done accordingly. > > Depending on your level of success, the messiness and your > willingness we might later want to incorporate MDI support > into the core library (controlled by the MDI_SUPPORT flag). I've had a go at doing this. See attached for what it might look like. I decided to add a configure option instead of doing the #define directly. The #define has no effect for tiffdump, since tiffdump is already a diagnostics tool and can support most of the MDI tags. I've done a little bit of work on what will happen if the host is bigendian, however it is almost certainly incomplete. I will do some more work on this before submitting the patch again. I'd also like to add something to the public API (eg another define or a function) that says whether libtiff was compiled with MDI support. I'm still not sure this is the right approach - doing a more general solution (perhaps with some flags) and always having it on would avoid packaging / building problems. Brad