+
+
+TIFF CHANGE INFORMATION
+
+
+
+
+
+This document describes the changes made to the software between the
+previous and current versions (see above).
+If you don't find something listed here, then it was not done in this
+timeframe, or it was not considered important enough to be mentioned.
+The following information is located here:
+
+
+
+
+
+
+MAJOR CHANGES:
+
+
+ - New tiffcrop utility contributed by Richard Nolde.
+ tiffcrop does the same as tiffcp, but also can crop,
+ extract, rotate and mirror images.
+
+
- tif_jbig.c: Added support for JBIG compression scheme
+ (34661 code), contributed by Lee Howard.
+
+
- Totally new implementation of OJPEG module from
+ Joris Van Damme. No need to patch libjpeg anymore. Many OJPEG files
+ should be supported now that was not supported previously.
+
+
+
+
+
+
+
+CHANGES IN THE SOFTWARE CONFIGURATION:
+
+
+
+ - tif_config.wince.h, tiffconf.wince.h, tif_wince.c: WinCE-specific
+ compatibility stuff from Mateusz Loskot.
+
+
- Rename config.h.vc and tif_config.h.vc to config.vc.h and
+ tif_config.vc.h for easier identification by folks using an IDE.
+
+
- configure, configure.ac: OJPEG support enabled by default (i.e.,
+ whe the conformant JPEG support enabled).
+
+
- README.vms, Makefile.am, configure.com, libtiff/{Makefile.am,
+ tif_config.h-vms, tif_stream.cxx, tif_vms.c, tiffconf.h-vms}:
+ Added support for OpenVMS by Alexey Chupahin.
+
+
- nmake.opt: use /EHsc for VS2005 compatibility. Also define
+ _CRT_SECURE_NO_DEPRECATE to avoid noise on VS2005.
+
+
+
+
+
+
+
+CHANGES IN LIBTIFF:
+
+
+ - tif_dirinfo.c (_TIFFFindFieldInfo): Don't attempt to
+ bsearch() on a NULL fieldinfo list.
+ (_TIFFFindFieldInfoByName): Don't attempt to lfind() on a NULL
+ fieldinfo list.
+
+
- tif_jpeg.c: Changed JPEGInitializeLibJPEG() so that it
+ will convert from decompressor to compressor or compress to decompress
+ if required by the force arguments. This works around a problem in
+ where the JPEGFixupTestSubsampling() may cause a decompressor to
+ be setup on a directory when later a compressor is required with the
+ force flag set. Occurs with the addtiffo program for instance.
+
+
- tif_dirwrite.c: Fixed swapping of byte arrays stored
+ in-place in tag offsets as per bug
+
+ http://bugzilla.remotesensing.org/show_bug.cgi?id=1363
+
+
- tif_getimage.c: workaround for 'Fractional scanline' error
+ reading OJPEG images with rowsperstrip that is not a multiple of
+ vertical subsampling factor. This bug is mentioned in
+
+ http://bugzilla.remotesensing.org/show_bug.cgi?id=1390 and
+
+ http://www.asmail.be/msg0054766825.html
+
+
- tif_dirread.c: Added special function to handle
+ SubjectDistance EXIF tag as per bug
+
+ http://bugzilla.remotesensing.org/show_bug.cgi?id=1362
+
+
- tif_dirread.c, tif_read.c: Type of the byte counters
+ changed from tsize_t to uint32 to be able to work with data arrays
+ larger than 2GB. Fixes bug
+
+ http://bugzilla.remotesensing.org/show_bug.cgi?id=89
+ Idea submitted by Matt Hancher.
+
+
- tif_dir.c: Workaround for incorrect TIFFs with
+ ExtraSamples == 999 produced by Corel Draw. As per bug
+
+ http://bugzilla.remotesensing.org/show_bug.cgi?id=1490
+
+
- tif_write.c: TIFFAppendToStrip() - clear sorted flag if
+ we move a strip.
+
+ http://bugzilla.remotesensing.org/show_bug.cgi?id=1359
+
+
- tif_fax3.c: Save the state of printdir codec dependent method.
+
+
- tif_jpeg.c: Save the state of printdir codec dependent method
+ as per bug
+
+ http://bugzilla.remotesensing.org/show_bug.cgi?id=1273
+
+
- tif_win32.c: Fixed problem with offset value manipulation
+ as per bug
+
+ http://bugzilla.remotesensing.org/show_bug.cgi?id=1322
+
+
- tif_fax3.c, tif_next.c, tif_pixarlog.c: Fixed multiple
+ vulnerabilities, as per Gentoo bug ():
+
+ http://bugs.gentoo.org/show_bug.cgi?id=142383
+
+
- tif_lzw.c, tif_zip.c: Fixed problems with mixing
+ encoding and decoding on the same read-write TIFF handle. The LZW
+ code can now maintain encode and decode state at the same time. The
+ ZIP code will switch back and forth as needed.
+
+ http://bugzilla.remotesensing.org/show_bug.cgi?id=757
+
+
- tif_msdos.c: Avoid handle leak for failed opens.
+ c/o Thierry Pierron
+
+
- tif_dirwrite.c: take care not to flush out buffer of strip/tile
+ data in _TIFFWriteDirectory if TIFF_BEENWRITING not set. Relates
+ to bug report by Peng Gao with black strip at bottom of images.
+
+
- tif_dirwrite.c: make sure to use uint32 for wordcount in
+ TIFFWriteNormanTag if writecount is VARIABLE2 for ASCII fields.
+ It already seems to have been done for other field types. Needed
+ for "tiffset" on files with geotiff ascii text.
+
+
- tif_dirinfo.c: Added missed EXIF tag ColorSpace (40961).
+
+
- tif_dirread.c: Move IFD fetching code in the separate
+ function TIFFFetchDirectory() avoiding code duplication in
+ TIFFReadDirectory() and TIFFReadCustomDirectory().
+
+
- tif_readdir.c: Added case in EstimateStripByteCounts() for tiled
+ files. Modified TIFFReadDirectory() to not invoke
+ EstimateStripByteCounts() for case where entry 0 and 1 are unequal but
+ one of them is zero.
+
+ http://bugzilla.remotesensing.org/show_bug.cgi?id=1204
+
+
- tif_open.c, tif_dirread.c, tiffiop.h: Move IFD looping
+ checking code in the separate function TIFFCheckDirOffset().
+
+
- tif_aux.c: Added _TIFFCheckRealloc() function.
+
+
- tif_fax3.c: Fixed problems in fax decoder as per bug
+
+ http://bugzilla.remotesensing.org/show_bug.cgi?id=1194
+
+
- tif_jbig.c: Added support for JBIG compression scheme
+ (34661 code) contributed by Lee Howard. As per bug
+
+ http://bugzilla.remotesensing.org/show_bug.cgi?id=896
+
+
- tif_getimage.c: Added support for planarconfig separate
+ non-subsampled YCbCr (i.e. separate YCbCr with subsampling [1,1]).
+
+
- tif_getimage.c: Revision of all RGB(A) put routines:
+
+ - Conversion of unassociated alpha to associated alpha
+ now done with more performant LUT, and calculation more
+ correct.
+
- Conversion of 16bit data to 8bit data now done with
+ more performant LUT, and calculation more correct
+
- Bugfix of handling of 16bit RGB with unassociated alpha
+
+
+ - tif_ojpeg.c: totally new implementation
+
+
- tif_getimage.c: removed TIFFTAG_JPEGCOLORMODE handling
+ of OJPEG images in favor of tif_getimage.c native handling of
+ YCbCr and desubsampling.
+
+
- tif_jpeg.c: JPEGVSetField() so that altering the photometric
+ interpretation causes the "upsampled" flag to be recomputed. Fixes
+ peculiar bug where photometric flag had to be set before jpegcolormode
+ flag.
+
+
+
+
+
+
+
+CHANGES IN THE TOOLS:
+
+
+
+
+
+
+
+CHANGES IN THE CONTRIB AREA:
+
+
+
+ - contrib/addtiffo/tif_overview.c: Fix problems with odd sized
+ output blocks in TIFF_DownSample_Subsampled() (bug 1542).
+
+
- contrib/dbs/xtiff/xtiff.c: Make xtiff utility compilable.
+ Though it is still far from the state of being working and useful.
+
+
+
+Last updated $Date: 2007/07/13 13:40:12 $.
+
+
+