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September 1999
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1999.09.15 08:57 "[Fwd: Fix for decompression bug (sizes >= 65536)]", by Jacques Thiebauld
I would like to say thank-you to everybody who helps me to solve with my G4 image problem. Hereafter you can find the fix that solve my problem (it was line sizes > 65536).. Jacques From: Peter Smith <psmith@creo.com> Date: Tue, 14 Sep 1999 17:22:15 +0200 To: jacth@dalim.de Subject: Fix for decompression bug (sizes >= 65536) Message-ID: <E268474520F92B38C12567EC00546F4E.00546F89C12567EC@kehl.dalim.de> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit >X-From_: owner-tiff@olympiakos.com Thu May 20 03:00:25 1999 >X-Authentication-Warning: gate7.olympiakos.com: majordom set sender to owner-tiff@olympiakos.com using -f >Date: Thu, 20 May 1999 11:01:25 +0200 >From: "Franois Dagand" <Francois.Dagand@mc2.fr> >Organization: MC2 >X-Mailer: Mozilla 4.06 [fr] (Win98; I) >To: tiff@sgi.com >Subject: Fix for decompression bug (sizes >= 65536) >Sender: owner-tiff@olympiakos.com >X-Eagle-Notice: Sender not 8-bit clean in 'From: \"Fran\347ois Dagand\" <Francois.Dagand@mc2.fr>' > > >Hello again, > >I just received a mail from Frank D. Cringle, the guy who wrote viewfax, >a software >for displaying TIFF files on X-Windows. The decompression algorithm for >this software >was used in libtiff, according to the comments. This soft also had a >problem for tiffs >wider than 65536 pixels. Frank gave me a correction for this bug in >viewfax, and I was >able to port the correction to libtiff. Don't ask me how it works, >though. > >If you want to go over that limit of 65536, modify files tif_fax3.h and >tif_fax3.c (lines number >from v3.4 beta). ">" is the modified code, "<" is the original : > >tif_fax3.h : > >46c46 >< * fillruns(unsigned char* buf, uint16* runs, uint16* erun, uint32 >lastx) >> * fillruns(unsigned char* buf, uint32* runs, uint32* erun, uint32 >lastx) >55c55 >< typedef void (*TIFFFaxFillFunc)(unsigned char*, uint16*, uint16*, >uint32); >> typedef void (*TIFFFaxFillFunc)(unsigned char*, uint32*, uint32*, >uint32); >63c63 >< extern void _TIFFFax3fillruns(unsigned char*, uint16*, uint16*, >uint32); >> extern void _TIFFFax3fillruns(unsigned char*, uint32*, uint32*, >uint32); >87c87 >< uint16 Param; /* unsigned 16-bit run length in bits */ >> uint32 Param; /* unsigned 32-bit run length in bits */ > >tif_fax3.c : > >81,83c81,83 >< uint16* runs; /* b&w runs for current/previous row */ >< uint16* refruns; /* runs for reference line */ >< uint16* curruns; /* runs for current line */ >> uint32* runs; /* b&w runs for current/previous row */ >> uint32* refruns; /* runs for reference line */ >> uint32* curruns; /* runs for current line */ >120,121c120,121 >< uint16* pa; /* place to stuff next run */ \ >< uint16* thisrun; /* current row's run array */ \ >> uint32* pa; /* place to stuff next run */ \ >> uint32* thisrun; /* current row's run array */ \ >128c128 >< uint16* pb /* next run in reference line */\ >> uint32* pb /* next run in reference line */\ >298c298 >< SWAP(uint16*, sp->curruns, sp->refruns); >> SWAP(uint32*, sp->curruns, sp->refruns); >361c361 >< _TIFFFax3fillruns(u_char* buf, uint16* runs, uint16* erun, uint32 >lastx) >> _TIFFFax3fillruns(u_char* buf, uint32* runs, uint32* erun, uint32 >lastx) >502c502 >< dsp->runs = (uint16*) _TIFFmalloc(nruns*sizeof (uint16)); >> dsp->runs = (uint32*) _TIFFmalloc(nruns*sizeof (uint32)); >1378c1378 >< SWAP(uint16*, sp->curruns, sp->refruns); >> SWAP(uint32*, sp->curruns, sp->refruns); > >--- end --- > > ----------------------------------------------------------------- Peter Smith mailto:plsmith@island.net mailto:psmith@creo.com (forwarded directly to the above address) Phone: 250-285-2294 Attachment Converted: "C:\Eudora\Attach\vcard5.vcf"