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August 2005
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2005.08.29 18:00 "Re: libTIFF and ImageMagick - Windows binaries; Turning on support for JPEG compressed TIFFs; Alternatives (TIFFCP, TIFF2BW, etc.) for JPEG TIFFs", by Morten Bagai
Dave, I'm by no means an expert on this, but since I have been struggling with getting OJPEG support enabled for myself*, this might help you a little bit. It seems to me that the instructions in contrib/ojpeg may be a little out of sync with how the configuration process works for the current libtiff. In the current configure script there are actually options for the following that will generate the correct tifconf.h --enable-jpeg (on by default) --enable-old-jpeg (enable support for Old JPEG compresson (read contrib/ojpeg/README first! Compilation fails with unpatched IJG JPEG library) --with-jpeg-include-dir=DIR location of IJG JPEG library headers --with-jpeg-lib-dir=DIR location of IJG JPEG library binary On MacOS X 10.4 I've managed to get to the point where all this compiles, but unfortunately I am still not able to process the the wang-jpegs in our library. I used to get a message to the effect of "Old-style JPEG compression not built/configured" from libtiff, but after the latest round of compiling, I get this: color1.tif: Warning, incorrect count for field "StripOffsets" (1, expecting 3); tag ignored. color1.tif: Warning, incorrect count for field "StripByteCounts" (1, expecting 3); tag ignored. tiff2pdf: Missing JPEGProc field in OJPEG image color1.tif. tiff2pdf: No support for color1.tif with OJPEG compression and separated planar configuration. I was going to post a separate topic on this list to see if anyone could help me explain this, but maybe someone will jump on it in this thread instead. Regards, Morten