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<HTML>
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<HEAD>
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<TITLE>
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	Changes in TIFF v3.7.3
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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: v3.7.3
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    Previous Version: v3.7.2
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    Master FTP Site:
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    download.osgeo.org, directory pub/libtiff
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    Master HTTP Site:
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    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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    • Major Changes
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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 the contrib area
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      <FONT SIZE=+3>M</FONT>AJOR CHANGES:
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      •  Replace runtime endianess check with the compile time one.
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      •  Added support for the new predictor type (floating point
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        	predictor), defined at the TIFF Technical Note 3.
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      •  Added Support for custom tags, passed by value.
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        	Added support for all DNG tags.
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        <FONT SIZE=+3>C</FONT>HANGES IN THE SOFTWARE CONFIGURATION:
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        •  Do not use empty -R option when linking with --enable-rpath.
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        •  Added workaround for OpenBSD/MirOS soname problem as per bug
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          		http://bugzilla.remotesensing.org/show_bug.cgi?id=838
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        •  Fixed parallel compilation of the libtiff and
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          	libtiffxx libraries as per bug
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          		http://bugzilla.remotesensing.org/show_bug.cgi?id=826
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        •  configure.ac, libtiff/Makefile.am: Use libtool machinery to pass
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          	rpath option.
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        •  make.opt: Build with Win32 CRT library by default.
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          <FONT SIZE=+3>C</FONT>HANGES IN LIBTIFF:
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          •  tiffiop.h, tif_open.c: Added open option 'h' to avoid reading
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            	the first IFD when needed. As per bug
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            		http://bugzilla.remotesensing.org/show_bug.cgi?id=875
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          •  tiff.h: Use correct int size on Sparc 64bit/Sun compiler
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            	platform. As per bug
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            		http://bugzilla.remotesensing.org/show_bug.cgi?id=855
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          •  tif_dirinfo.c: Added support for ClipPath, XClipPathUnits
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            	and YClipPathUnits tags.
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          •  tif_dirinfo.c, tif_dir.h, tif_dir.c, tif_print.c: Make
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            	DocumentName, Artist, HostComputer, ImageDescription, Make, Model,
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            	Copyright, DateTime, PageName, TextureFormat, TextureWrapModes and
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            	TargetPrinter tags custom.
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          •  tif_jpeg.c: Cleanup the codec state depending on TIFF_CODERSETUP
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            	flag (to fix memory leaks).
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          •  tif_dirwrite.c: Use tdir_count when calling
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            	TIFFCvtNativeToIEEEDouble() in the TIFFWriteDoubleArray() function as
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            	per bug
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            	http://bugzilla.remotesensing.org/show_bug.cgi?id=845
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          •  tif_dirinfo.c, tif_print.c: TIFFFetchByteArray() returns
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            	uint16 array when fetching the BYTE and SBYTE fields, so we should
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            	consider result as pointer to uint16 array and not as array of chars.
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            	As per bug
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            		http://bugzilla.remotesensing.org/show_bug.cgi?id=831
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          •  tif_dir.c: More efficient custom tags retrieval as per bug
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            		http://bugzilla.remotesensing.org/show_bug.cgi?id=830
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          •  tif_win32.c: Use FILE_SHARE_READ | FILE_SHARE_WRITE share
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            	mode in CreateFile() call as per bug
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            	http://bugzilla.remotesensing.org/show_bug.cgi?id=829
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          •  tif_jpeg.c: Substantial fix for addtiffo problems with
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            	JPEG encoded TIFF files.  Pre-allocate lots of space for jpegtables
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            	in directory.
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          •  tif_dirread.c: Changed the code that computes
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            	stripbytecount[0] if it appears bogus to ignore if stripoffset[0] is
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            	zero. This is a common case with GDAL indicating a "null" tile/strip.
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          •  tif_jpeg.c: added LIB_JPEG_MK1 support in JPEGDecodeRaw().
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          •  tif_dirread.c: Ensure that broken files with too many
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            	values in PerSampleShorts, TIFFFetchPerSampleLongs and
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            	TIFFFetchPerSampleAnys work ok instead of crashing.
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            	http://bugzilla.remotesensing.org/show_bug.cgi?id=843
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          •  tif_predict.h, tif_predict.c: Added ability to decode and encode
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            	floating point predictor, as per TIFF Technical Note 3.
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            	See http://chriscox.org/TIFF_TN3_Draft2.pdf for details.
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          •  tiffio.h, tiffiop.h, tif_dir.c, tif_read.c, tif_swab.c:
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            	Added _TIFFSwab24BitData() and TIFFSwabArrayOfLong() functions used to
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            	swap 24-bit floating point values.
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          •  tiff.h: Added predictor constants.
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          •  tiffiop.h, tif_dir.c: Use uint32 type for appropriate values
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            	in _TIFFVSetField() function. Inspired by the bug
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            		http://bugzilla.remotesensing.org/show_bug.cgi?id=816
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          •  tif_open.c: Do not read header in case the output file should
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            	be truncated (Ron).
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          •  tif_dirinfo.c, tif_config.h.vc: Use lfind() instead of bsearch()
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            	in _TIFFFindFieldInfoByName() function (Ron).
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          •  tif_dir.c, tif_print.c: Properly handle all data types in custom
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            	tags.
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          •  dirinfo.c: Added DNG tags.
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          •  tiff.h: Added missed DNG tag (LensInfo); added DNG 1.1.0.0 tags.
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          •  tif_dir.c, tif_print.c: Added Support for custom tags, passed
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            	by value.
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          •  tiff.h, tif_dirinfo.c, tiffiop.h: Added EXIF related tags.
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            <FONT SIZE=+3>C</FONT>HANGES IN THE TOOLS:
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            •  tiff2pdf.c: Print two characters per loop in the
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              	t2p_write_pdf_trailer(). As per bug
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              		http://bugzilla.remotesensing.org/show_bug.cgi?id=594
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            •  tiffgt.c: Use MacOS X OpenGL framework when appropriate. As
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              	per bug
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              		http://bugzilla.remotesensing.org/show_bug.cgi?id=844
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            •  ppm2tiff.c: Fixed format string when read PPM file header with
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              	the fscanf() function. As per bug
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              		http://bugzilla.remotesensing.org/show_bug.cgi?id=861
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            •  tiffsplit.c: Check for JPEGTables tag presence before copying.
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            •  tiff2pdfr.c: Calculate the tile width properly; added new
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              	option '-b' to use interpolation in output PDF files (Bruno Ledoux).
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            •  tiffdither.c: Copy the PhotometricInterpretation tag from the
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              	input file.
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            •  tif2pdf.c: Fixed problem with alpha channel handling as per
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              	bug
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              		http://bugzilla.remotesensing.org/show_bug.cgi?id=794.
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              <FONT SIZE=+3>C</FONT>HANGES IN THE CONTRIB AREA:
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            •  addtiffo/{tif_overview.c, tif_ovrcache.c, tif_ovrcache.h}:
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              	Make overviews working for contiguous images.
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              Last updated $Date: 2016-09-25 20:05:45 $.
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