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	Changes in TIFF v3.9.0beta

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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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Current Version: v3.9.0beta

Previous Version: v3.8.2

Master FTP Site: 

ftp.remotesensing.org, directory pub/libtiff

Master HTTP Site: 

http://www.remotesensing.org/libtiff 

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

Changes in the software configuration

Changes in libtiff

Changes in the tools

Changes in the contrib area

<font size="+3">M</font>AJOR 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.

<font size="+3">C</font>HANGES 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.

<font size="+3">C</font>HANGES 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.

<font size="+3">C</font>HANGES IN THE TOOLS:

	
 tiff2ps.c:  Added support 16-bit images as per bug

	http://bugzilla.remotesensing.org/show_bug.cgi?id=1566.

	Patch from William Bader.

	
 tiff2pdf.c: Fix for TIFFTAG_JPEGTABLES tag fetching and

	significant upgrade of the whole utility as per bug

	http://bugzilla.remotesensing.org/show_bug.cgi?id=1560.

	Now we don't need tiffiop.h in tiff2pdf anymore and will open output

	PDF file using TIFFClientOpen() machinery as it is implemented

	by Leon Bottou.

	
 tiffcrop.c:  New tiffcrop utility contributed

	by Richard Nolde. As per bug

	http://bugzilla.remotesensing.org/show_bug.cgi?id=1383

	
 tiff2pdf.c: Do not assume inches when the resolution units

	do not specified. As per bug

	http://bugzilla.remotesensing.org/show_bug.cgi?id=1366

	
 tiffset.c: Properly handle tags with TIFF_VARIABLE writecount.

	As per bug

		http://bugzilla.remotesensing.org/show_bug.cgi?id=1350

	
 tif2rgba.c: This utility does not work properly on big-endian

	architectures. It was fixed including the bug

	http://bugzilla.remotesensing.org/show_bug.cgi?id=1149

	
 tiff2pdf.c: Fix handling of -q values.

	http://bugzilla.remotesensing.org/show_bug.cgi?id=587

	
 tiffcmp.c: Fixed floating point comparison logic as per bug

	http://bugzilla.remotesensing.org/show_bug.cgi?id=1191

	
 tiff2pdf.c: Fixed buffer overflow condition in

	t2p_write_pdf_string() as per bug

	http://bugzilla.remotesensing.org/show_bug.cgi?id=1196

<font size="+3">C</font>HANGES 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: 2009-08-20 22:57:39 $.