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<HTML>
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<TITLE>
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Changes in TIFF v3.4beta024
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</TITLE>
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<BODY>
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<FONT FACE="Arial, Helvetica, 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: v3.4beta024
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Previous Version: v3.4beta018
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Master FTP Site: ftp.sgi.com (192.48.153.1), directory graphics/tiff
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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 the manual pages
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Changes in the contributed software
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<FONT SIZE=+3>C</FONT>HANGES IN THE SOFTWARE CONFIGURATION:
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It is now possible to setup the software to build only the
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library; configure reconizes this is the intent when the
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VERSION, tiff.alpha, and tif_version.c
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files are in the local directory (i.e. ``.'')
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configure no longer tries to setup HTML materials
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include file directories needed in building the library are now
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specified with a <TT>DIRS_LIBINC</TT> config parameter
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configure no longer checks for alternate compilers if <TT>CC</TT>
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is set; if the specified compiler is not found or is not appropriate
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the configuration procedure aborts
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the port.h file generated by configure is now used only by
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the library and as such as have been moved to the libtiff
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directory
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there is beginning support for building DSO's on systems other than IRIX
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configure now verifies the JPEG and zlib directory pathnames by
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checking for well-known include files in these directories
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configure no longer creates the dist directory needed only
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on SGI machines (for building SGI binary distributions)
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a bug was fixed whereby configure would incorrectly set
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<TT>ENVOPTS</TT> when building the software with gcc under AIX
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<FONT SIZE=+3>C</FONT>HANGES IN LIBTIFF:
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two new typedefs were added to tiff.h</TT>: <TT>int8</TT>
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and <TT>uint8</TT> for signed and unsigned 8-bit quantities,
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respectively; these are currently used only by
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programs in the tools directory
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the <TT>BadFaxLines</TT>, <TT>CleanFaxData</TT>, and
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<TT>ConsecutiveBadFaxLines tags are now supported with
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Group 4 compression
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byte order is now correctly identified on 64-bit machines
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a bug was fixed in the PackBits decoder where input data would
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appear short when a no-op run was present
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a bug was fixed in calculations with very wide strips
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<TT>TIFFWriteEncodedStrip</TT> and <TT>TIFFWriteRawStrip</TT>
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were extended to support dynamically growing the number of
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strips in an image (must set <TT>ImageLength</TT> prior to
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making calls though)
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<TT>TIFFDefaultTileSize</TT> now rounds tile width and height
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up to a multiple of 16 pixels, as required by the TIFF 6.0 specification
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the file version.h is now built by a new mkversion
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program; this was done for portability to non-UNIX systems
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support was added for the Acorn RISC OS (from Peter Greenham)
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the builtin codec table is now made <TT>const</TT> when compiling
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under VMS so that libtiff can be built as a shared library
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support for the PowerPC Mac (from Ruedi Boesch)
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support for Window NT/Window 95 (from Scott Wagner)
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<FONT SIZE=+3>C</FONT>HANGES IN THE TOOLS:
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the tools no longer include port.h
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various portability fixes; mostly to eliminate implicit assumptions
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about how long <TT>int32</TT> data types are
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PostScript Level II additions to <TT>tiff2ps</TT> from Bjorn Brox
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<TT>sgi2tiff</TT> now handles RGBA images
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<FONT SIZE=+3>C</FONT>HANGES IN THE MANUAL PAGES:
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the documentation has been updated to reflect the current state of
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the software
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some routines have been moved to different manual pages
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to group like-routines together
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<FONT SIZE=+3>C</FONT>HANGES IN THE CONTRIBUTED SOFTWARE:
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support was added for the Acorn RISC OS (from Peter Greenham)
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support for Windows NT/Windows 95 contributed for a previous
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version of this software was sort of incorporated (it's broken
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right now) (from Scott Wagner)
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 TIFF home page.
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<ADDRESS>
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Sam Leffler / sam@engr.sgi.com
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Last updated $Date: 1999/08/09 20:21:21 $.
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</ADDRESS>
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</BODY>
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</HTML>
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