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Code Editor : v3.4beta007.html

<HTML>
<HEAD>
<TITLE>
Changes in TIFF v3.4beta007
</TITLE>
</HEAD>

<BODY>

<BASEFONT SIZE=4>
TIFF CHANGE INFORMATION
<BASEFONT SIZE=3>

<UL>
<HR SIZE=4 WIDTH=65% ALIGN=left>
Current Version: v3.4beta007 
Previous Version: v3.4beta004 
Master FTP Site: <A HREF="ftp://ftp.sgi.com/graphics/tiff">ftp.sgi.com (192.48.153.1), directory graphics/tiff</A> 
<HR SIZE=4 WIDTH=65% ALIGN=left>
</UL>

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="#port">Changes in the portability support</A>
<LI><A HREF="#tools">Changes in the tools</A>
</UL>

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

<UL>
<LI>bit order was corrected for Pentium systems
<LI>a new define, <TT>HOST_BIGENDIAN</TT>, was added for code that
 wants to statically use information about native cpu byte order
</UL>

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

<UL>
<LI>the G3/G4 decoder was replaced by a new one that is faster and
 has smaller state tables
<LI>Niles Ritter's client tag extension hooks were added
<LI>a new routine <TT>TIFFCurrentDirOffset</TT> was added for
 applications that want to find out the file offset of a TIFF directory
<LI>the calculation of the number of strips in an image was corected
 for images with certain esoteric configurations
<LI>a potential memory leak (very unlikely) was plugged
<LI>the <TT>TIFFReadRGBAImage</TT> support was completely rewritten
 and new, more flexible support was added for reading images into
 a fixed-format raster
<LI>YCbCr to RGB conversion done in the <TT>TIFFReadRGBAImage</TT> support
 was optimized
<LI>a bug in JPEG support calculation of strip size was corrected
<LI>the LZW decoder was changed to initialize the code table to zero
 to lessen potential problems that arise when invalid data is decoded
<LI>tiffcomp.h is now aware of OS/2
<LI>some function prototypes in tiffio.h and tiffiop.h
 that contained parameter
 names have been changed to avoid complaints from certain compilers
</UL>

<A NAME="port">CHANGES IN THE PORTABILITY SUPPORT:</A>

<UL>
<LI>Makefile.in has been corrected to use the parameters
 chosen by the configure script
</UL>

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

<UL>
<LI><TT>fax2ps</TT> has been rewritten and moved over from the user
 contributed software
<LI>an uninitialized variable in <TT>pal2rgb</TT> has been fixed
<LI><TT>ras2tiff</TT> now converts 24-bit RGB raster data so that
 samples are written in the proper order
<LI><TT>tiff2ps</TT> has been updated to include fixes
 and enhancements from Alberto Accomazzi
<LI><TT>tiffcp</TT> now has a <TT>-o</TT> option to select a directory
 by file offset
<LI><TT>tiffinfo</TT> is now capable of displaying the raw undecoded
 image data in a file
<LI><TT>tiffgt</TT> has been rewritten to use the new <TT>TIFFRGBAImage</TT>
 support and to handle multiple files
</UL>

<A HREF="index.html"><IMG SRC="images/back.gif"></A> TIFF home page.

<HR>

<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 $.
</ADDRESS>

</BODY>
</HTML>

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Code Editor : v3.4beta007.html