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<HTML>
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<HEAD>
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<TITLE>
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Changes in TIFF v3.5.6
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</TITLE>
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</HEAD>
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<BODY BGCOLOR=white>
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<FONT FACE="Helvetica, Arial, Sans">
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<FONT FACE="Helvetica, Arial, Sans">
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<BASEFONT SIZE=4>
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<FONT SIZE=+3>T</FONT>IFF <FONT SIZE=+2>C</FONT>HANGE <FONT SIZE=+2>I</FONT>NFORMATION
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<BASEFONT SIZE=3>
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    Current Version: v3.5.6beta
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    Previous Version: v3.5.5
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    Master FTP Site: ftp.onshore.com, directory pub/libtiff
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    Master HTTP Site: http://www.simplesystems.org/libtiff/
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    This document describes the changes made to the software between the
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    previous and current versions (see above).
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    If you don't find something listed here, then it was not done in this
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    timeframe, or it was not considered important enough to be mentioned.
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    The following information is located here:
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    • Changes in the software configuration
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    • Changes in libtiff
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    • Changes in the tools
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    • Changes in contrib
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    • Changes in the LZW compression kit
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      <FONT SIZE=+3>C</FONT>HANGES IN THE SOFTWARE CONFIGURATION:
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      •  Added GNULDdso target and switched linux and freebsd to use it.
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      •  tools/Makefile.in: Modified to install properly on SGI.
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      •  configure: Fixed DSO test for Linux as per patch from
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        	  Jan Van Buggenhout <chipzz@Ace.ULYSSIS.Student.KULeuven.Ac.Be>.
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        <FONT SIZE=+3>C</FONT>HANGES IN LIBTIFF:
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      •  tif_dir.c: Clear TIFF_ISTILED flag in TIFFDefaultDirectory
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        	as per http://bugzilla.remotesensing.org/show_bug.cgi?id=18
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        	from vandrove@vc.cvut.cz.
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      •  Modified tif_packbits.c decoding to avoid overrunning the
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        	output buffer, and to issue a warning if data needs to be
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        	discarded.  See http://bugzilla.remotesensing.org/show_bug.cgi?id=18
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      •  Modified TIFFClientOpen() to emit an error on an attempt to
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        	open a comperessed file for update (O_RDWR/r+) access.  This is
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        	because the compressor/decompressor code gets very confused when
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        	the mode is O_RDWR, assuming this means writing only.  See
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        	bug http://bugzilla.remotesensing.org/show_bug.cgi?id=13
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      •  Applied patch for 0x0000 sequences in tif_fax3.h's definition
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        	of EXPAND1D() as per bug 11 (from Roman).
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      •  Fixed tiffcomp.h to avoid win32 stuff if unix #defined, to improve
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        	cygwin compatibility.
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      •  Applied patch from Roman Shpount to tif_fax3.c.  This seems to
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        	be a proper fix to the buffer sizing problem.  See
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        	http://bugzilla.remotesensing.org/show_bug.cgi?id=11
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      •  Fixed tif_getimage.c to fix overrun bug with YCbCr images without
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        	downsampling.  http://bugzilla.remotesensing.org/show_bug.cgi?id=10
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        	Thanks to Nick Lamb <njl98r@ecs.soton.ac.uk> for reporting the
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        	bug and proving the patch.
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      •  Fixed tif_jpeg.c so avoid destroying the decompressor before
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        	we are done access data thanks to bug report from:
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        	Michael Eckstein <eckstein@gepro.cz>.
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      •  tif_open.c: Don't set MMAP for O_RDWR files.
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      •  tif_open.c: Set STRIPCHOP_DEFAULT for O_RDWR as well as O_RDONLY
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        	so that files opened for update can be strip chopped too.
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      •  tif_read.c: fixed up bug with files missing rowsperstrip and
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        	the strips per separation fix done a few weeks ago.
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      •  Tentatively added support for SAMPLEFORMAT_COMPLEXIEEEFP, and
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        	SAMPLEFORMAT_COMPLEXINT.
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      •  index.html, bugs.html: added bugzilla info.
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      •  tif_read.c: fix subtle bug with determining the number of
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        	rows for strips that are the last strip in a separation but
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        	not the last strip of all in TIFFReadEncodedStrip().
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      •  Applied 16/32 bit fix to tif_fax3.c.  Fix supplied by
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        	Peter Skarpetis <peters@serendipity-software.com.au>
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      •  Modified tiffio.h logic with regard to including windows.h.  It
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        	won't include it when building with __CYGWIN__.
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      •  README: update to mention www.libtiff.org, don't list Sam's old
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        	email address.
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      •  libtiff/tif_dirread.c: Don't use estimate strip byte count for
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        	one tile/strip images with an offset, and byte count of zero. These
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        	could be "unpopulated" images.
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      •  tif_win32.c:  Applied patch to fix overreads and ovverwrites
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        	  caught by BoundsChecker.  From Arvan Pritchard
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        	  <arvan.pritchard@infomatix.co.uk>  (untested).
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      •  tif_getimage.c:  Applied patch to silence VC6 warnings.  From
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        	  Arvan Pritchard <arvan.pritchard@informatix.co.uk>
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      •  tif_lzw.c:  Applied patch to silence VC6 warnings.  From
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        	  Arvan Pritchard <arvan.pritchard@informatix.co.uk>
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      •  libtiff/tif_apple.c: Applied "Carbon" support patches supplied by
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        	Leonard Rosenthol <leonardr@lazerware.com>.  May interfere
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        	with correct building on older systems.  If so, please let me know.
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        <FONT SIZE=+3>C</FONT>HANGES IN THE TOOLS:
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        •  tools/rgb2ycbcr.c: fixed output strip size to account for vertical
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          	roundup if rows_per_strip not a multiple of vertical sample size.
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        •  tools/tiffsplit.c: Copy TIFFTAG_SAMPLEFORMAT.
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        •   Modified tiff2bw to ensure portions add to 100%, and that
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          	 white is properly recovered.  See bug
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          	 http://bugzilla.remotesensing.org/show_bug.cgi?id=15 Patch
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          	 c/o Stanislav Brabec <utx@penguin.cz>
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          <FONT SIZE=+3>C</FONT>HANGES IN CONTRIB:
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          •  contrib/addtiffo: Added "averaging" resampling option.
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          •  Added contrib/stream (stream io) code submitted by Avi Bleiweiss.
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            <FONT SIZE=+3>C</FONT>HANGES IN THE LZW COMPRESSION KIT
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          •  updated tif_dir.c to reflect changes to no-lzw tif_dir.c
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             TIFF home page.
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            Last updated $Date: 2016-09-25 20:05:45 $.
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