149 lines
4.3 KiB
HTML
149 lines
4.3 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML>
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<HEAD>
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<TITLE>
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Changes in TIFF v4.0.5
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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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<BASEFONT SIZE=4>
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<B><FONT SIZE=+3>T</FONT>IFF <FONT SIZE=+2>C</FONT>HANGE <FONT SIZE=+2>I</FONT>NFORMATION</B>
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<BASEFONT SIZE=3>
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<UL>
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<HR SIZE=4 WIDTH=65% ALIGN=left>
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<B>Current Version</B>: v4.0.5<BR>
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<B>Previous Version</B>: <A HREF=v4.0.4.html>v4.0.4</a><BR>
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<B>Master Download Site</B>: <A HREF="https://download.osgeo.org/libtiff">
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download.osgeo.org</a>, directory pub/libtiff</A><BR>
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<B>Master HTTP Site</B>: <A HREF="http://www.simplesystems.org/libtiff/">
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http://www.simplesystems.org/libtiff/</a>
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<HR SIZE=4 WIDTH=65% ALIGN=left>
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</UL>
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<P>
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This document describes the changes made to the software between the
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<I>previous</I> and <I>current</I> versions (see above). If you don't
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find something listed here, then it was not done in this timeframe, or
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it was not considered important enough to be mentioned. The following
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information is located here:
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<UL>
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<LI><A HREF="#highlights">Major Changes</A>
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<LI><A HREF="#configure">Changes in the software configuration</A>
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<LI><A HREF="#libtiff">Changes in libtiff</A>
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<LI><A HREF="#tools">Changes in the tools</A>
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<LI><A HREF="#contrib">Changes in the contrib area</A>
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</UL>
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<p>
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<P><HR WIDTH=65% ALIGN=left>
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<!--------------------------------------------------------------------------->
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<A NAME="highlights"><B><FONT SIZE=+3>M</FONT>AJOR CHANGES:</B></A>
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<UL>
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<li> Support for configure/build using CMake.
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<li> Support for large (> 2GB) files under Microsoft Windows.
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</UL>
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<P><HR WIDTH=65% ALIGN=left>
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<!--------------------------------------------------------------------------->
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<A NAME="configure"><B><FONT SIZE=+3>C</FONT>HANGES IN THE SOFTWARE CONFIGURATION:</B></A>
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<UL>
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<LI> CMakeLists.txt / CMake
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<UL>
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<LI> Configuration and building using CMake is now supported
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under Microsoft Windows and on Unix-type systems.
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</UL>
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</LI>
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<LI> configure.ac / configure
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<UL>
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<LI> Test for and use fseeko() if it is available. This allows
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supporting large files on Unix-type systems with a 32-bit 'long'
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type and a 64-bit 'off_t' type.
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</UL>
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</LI>
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</UL>
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<P><HR WIDTH=65% ALIGN=left>
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<!--------------------------------------------------------------------------->
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<A NAME="libtiff"><B><FONT SIZE=+3>C</FONT>HANGES IN LIBTIFF:</B></A>
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<UL>
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<LI> tiffiop.h:
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<UL>
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<LI> Macros added to use 64-bit equivalents for all standard I/O
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and POSIX APIs used by libtiff and its tools which are limited
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to 2GB in Windows builds. Note that these 64-bit equivalents
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were introduced by the CRT provided with Visual Studio 2005 and
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if the necessary CRT is not installed on the target computer,
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the program will not run. The wrapper macros will not be
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activated unless the definition _MSC_VER is at least 1400 or
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__MSVCRT_VERSION__ is at least 0x800.
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</UL>
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<LI> tif_unix.c:
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<UL>
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<LI> Updated to support large files under Microsoft Windows.
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This makes tif_unix.c a completely viable candidate for use
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under Windows (in spite of its name) if the CRT is modern
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enough. Please note that tif_win32.c already supported large
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files, but only 'tiffinfo' and 'tiffdump' made any provision to
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support large files under Windows.
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<LI> _tiffReadProc() and _tiffWriteProc() are modified to chunk
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I/O to a maximum size of 2GB for extremely large I/O
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requests. This surmounts limitations in the Microsoft Windows
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read() and write() APIs (which are limited to the range of a
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32-bit 'int'), and may avoid poor behavior with extremely large
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I/O requests on other systems.
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</UL>
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</UL>
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<P><HR WIDTH=65% ALIGN=left>
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<!-------------------------------------------------------------------------->
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<A NAME="tools"><B><FONT SIZE=+3>C</FONT>HANGES IN THE TOOLS:</B></A>
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<UL>
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<LI> All tools
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<UL>
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<LI> Updated to use I/O wrapper macros from tiffiop.h in order
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to support large files under Microsoft Windows.
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</UL>
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</UL>
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<P><HR WIDTH=65% ALIGN=left>
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<!--------------------------------------------------------------------------->
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<A NAME="contrib"><B><FONT SIZE=+3>C</FONT>HANGES IN THE CONTRIB AREA:</B></A>
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<UL>
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<LI> None
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</UL>
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Last updated $Date: 2016-09-25 20:05:47 $.
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</BODY>
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</HTML>
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