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Changes in TIFF v3.4beta028
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TIFF CHANGE INFORMATION
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Current Version: v3.4beta028 
Previous Version: <A HREF=v3.4beta024.html>v3.4beta024</A> 
Master FTP Site: <A HREF="ftp://ftp.sgi.com/graphics/tiff">ftp.sgi.com (192.48.153.1), directory graphics/tiff</A> 
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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:
<UL>
<LI><A HREF="#configure">Changes in the software configuration</A>
<LI><A HREF="#libtiff">Changes in libtiff</A>
<LI><A HREF="#tools">Changes in the tools</A>
<LI><A HREF="#man">Changes in the manual pages</A>
<LI><A HREF="#contrib">Changes in the contributed software</A>
</UL>

<A NAME="configure">CHANGES IN THE SOFTWARE CONFIGURATION:</A>

<UL>
<LI>a <TT>-noninteractive</TT> flag was added to configure to
 control whether or not it prints and prompts for configuration information
<LI>various typos and fixes were made in configure for the the
 library-only build support (this and other configure fixes from
 Richard Mlynarik <A HREF=mailto:mly@adoc.xerox.com>&lt;mly@adoc.xerox.com&gt;</A>)
<LI>bugs were fixed in the handling of pathnames supplied for external
 packages; e.g. <TT>DIR_JPEG</TT>
<LI>the handling of <TT>SETMAKE</TT> is now done properly
<LI>the default prototype function declaration for <TT>pow</TT> was corrected
<LI>a bug was fixed in libtiff/Makefile.in that caused installation
 to fail on systems without DSO support
</UL>

<A NAME="libtiff">CHANGES IN LIBTIFF:</A>

<UL>
<LI>Acorn RISC O/S support that was accidentally left out of the
 left out of the previous distribution is present (from Peter Greenham)
<LI>complaints about unknown and/or unsupported codecs have been
 delayed until they are invoked; this permits applications to open
 images and look at tags even if the image data is compressed with
 an unknown/unsupported compression scheme
<LI>bugs in handling unknown tags have been corrected; applications
 that use multiple codecs, each with codec-specific tags, no longer
 generate confusing error messages
<LI>a missing pseudo-tag definition in the CCITT G3 codec was fixed
 (this problem caused core dumps in the <TT>tiffcp</TT> program)
<LI>pseudo-tags are now treated specially; they are always considered
 to be set (i.e. they do not use bits in the <TT>FIELD_*</TT> bit-vectors).
<LI>the use of strip chopping can now be controlled on a per-file basis
 through a mode parameter supplied when opening a file (``C'' to
 enable strip chopping and ``c'' to disable)
<LI>two bugs were fixed in the writing of opposite-endian byte-order
 files
<LI>support was added for three new fax-related tags registered to
 SGI: FaxRecvParams, FaxRecvTime, and FaxSubAddress
<LI>the bit order of image data read and written can now be controlled
 on a per-file basis through a mode parameter supplied when opening
 a file (``B'' to force MSB2LSB bit order, ``L'' for LSB2MSB bit
 order, and ``H'' for the bit order of the native CPU)
<LI>the byte order of image and tag data written to newly-created files
 can now be controlled on a per-file basis through a mode parameter
 supplied when openening a file (``b'' to force Big-Endian byte order
 and ``l'' to force Little-Endian byte order)
<LI>the use memory-mapped files for images opened read-only can now
 be controlled on a per-file basis through a mode parameter supplied
 when opening a file (``M'' to enable use of memory-mapped files
 and ``m'' to disable use)
<LI>the use of the <TT>WIN32</TT> define in tiffiop.h has
 been replaced by <TT>__WIN32__</TT>
</UL>

<A NAME="tools">CHANGES IN THE TOOLS:</A>

<UL>
<LI><TT>fax2ps</TT> now does a <TT>save</TT> and <TT>restore</TT>
 around each page of PostScript; this fixes a problem with VM
 overflow when printing a many-page document on some printers
<LI>a bug in the handling of 3-channel images by <TT>ras2tiff</TT> 
 was fixed
<LI><TT>tiffcp</TT> has new options to control the byte order of
 newly created files: -B for Big-Endian byte order, -L
 for Little-Endian byte order; a -M option to disable the
 use of memory-mapped files, and a -C option to disable the
 use of strip chopping
<LI>bugs were fixed in <TT>tiffcp</TT>'s handling of codec-specific tags
</UL>

<A NAME="man">CHANGES IN THE MANUAL PAGES:</A>

<UL>
<LI>the <TT>TIFFOpen</TT> page has been updated to reflect the new
 optional open mode parameters
</UL>

<A NAME="contrib">CHANGES IN THE CONTRIBUTED SOFTWARE:</A>

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<LI>contrib/win95 contains information and code from Philippe Tenenhaus
 <A HREF=mailto:100423.3705@compuserve.com>&lt;100423.3705@compuserve.com&gt;</A>
 about using the software under Windows 95
<LI>contrib/winnt contains information and code from Dave Dyer
 <A HREF=mailto:ddyer@triple-i.com>&lt;ddyer@triple-i.com&gt;</A>
 about using the software under Windows NT
</UL>

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<ADDRESS>
<A HREF="sam.html">Sam Leffler</A> / <A HREF="mailto:sam@engr.sgi.com">sam@engr.sgi.com</A>
Last updated $Date: 1999/08/09 20:21:21 $.
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