2020-12-19 13:37:12 -05:00
|
|
|
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
|
|
|
|
|
<HTML>
|
|
|
|
|
<HEAD>
|
|
|
|
|
<TITLE>
|
|
|
|
|
Changes in TIFF v4.2.0
|
|
|
|
|
</TITLE>
|
|
|
|
|
<STYLE TYPE="text/css">
|
|
|
|
|
body {
|
|
|
|
|
font-family: Helvetica, Arial, Sans;
|
|
|
|
|
}
|
|
|
|
|
table, th, td {
|
|
|
|
|
border: 1px solid black;
|
|
|
|
|
border-collapse: collapse;
|
|
|
|
|
}
|
|
|
|
|
th, td {
|
|
|
|
|
padding: 8pt;
|
|
|
|
|
text-align: center;
|
|
|
|
|
}
|
|
|
|
|
th {
|
|
|
|
|
text-align: center;
|
|
|
|
|
}
|
|
|
|
|
td {
|
|
|
|
|
text-align: center;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
ul li {
|
|
|
|
|
padding: 3pt;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
ul.a {
|
|
|
|
|
list-style-type: circle;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
ul.b {
|
|
|
|
|
list-style-type: square;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
ol.c {
|
|
|
|
|
list-style-type: upper-roman;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
ol.d {
|
|
|
|
|
list-style-type: lower-alpha;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
hr {
|
|
|
|
|
width: 65%;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
</STYLE>
|
|
|
|
|
</HEAD>
|
|
|
|
|
|
|
|
|
|
<BODY BGCOLOR=white>
|
|
|
|
|
|
|
|
|
|
<BASEFONT SIZE=4>
|
|
|
|
|
<B><FONT SIZE="+3">T</FONT>IFF <FONT SIZE="+2">C</FONT>HANGE <FONT SIZE="+2">I</FONT>NFORMATION</B>
|
|
|
|
|
<BASEFONT SIZE=3>
|
|
|
|
|
|
|
|
|
|
<div style="margin-left: 3em">
|
|
|
|
|
<HR SIZE=4 ALIGN=left>
|
|
|
|
|
<B>Current Version</B>: v4.2.0<BR>
|
|
|
|
|
<B>Previous Version</B>: <A HREF=v4.1.0.html>v4.1.0</a><BR>
|
|
|
|
|
<B>Master Download Site</B>: <A HREF="https://download.osgeo.org/libtiff">
|
|
|
|
|
download.osgeo.org</a>, directory pub/libtiff<<BR>
|
|
|
|
|
<B>Master HTTP Site #1</B>: <A HREF="http://www.simplesystems.org/libtiff/">
|
|
|
|
|
http://www.simplesystems.org/libtiff/</a><BR>
|
|
|
|
|
<B>Master HTTP Site #2</B>: <A HREF="http://libtiff.maptools.org/">
|
|
|
|
|
http://libtiff.maptools.org/</a>
|
|
|
|
|
<HR SIZE=4 ALIGN=left>
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<P>
|
|
|
|
|
This document provides a summary of significant changes made to the
|
|
|
|
|
software between the <I>previous</I> and <I>current</I> versions (see
|
|
|
|
|
above). A fully-detailed change summary is provided by the ChangeLog file
|
|
|
|
|
included in the release package and by the Git commit history:
|
|
|
|
|
<UL>
|
|
|
|
|
<LI><A HREF="#highlights">Major Changes</A>
|
|
|
|
|
<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="#contrib">Changes in the contrib area</A>
|
|
|
|
|
</UL>
|
|
|
|
|
<p>
|
|
|
|
|
<P><HR ALIGN=left>
|
|
|
|
|
|
|
|
|
|
<!-- ============================================================= -->
|
|
|
|
|
|
|
|
|
|
<A NAME="highlights"><B><FONT SIZE="+3">M</FONT>AJOR CHANGES:</B></A>
|
|
|
|
|
|
|
|
|
|
<UL>
|
|
|
|
|
|
|
|
|
|
<LI>Optional support for using libdeflate is added.</LI>
|
|
|
|
|
|
|
|
|
|
<LI>Many of the tools now support a memory usage limit.</LI>
|
|
|
|
|
|
|
|
|
|
</UL>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<P><HR ALIGN=left>
|
|
|
|
|
<!-- ============================================================= -->
|
|
|
|
|
|
|
|
|
|
<A NAME="configure"><B><FONT SIZE="+3">C</FONT>HANGES IN THE SOFTWARE CONFIGURATION:</B></A>
|
|
|
|
|
|
|
|
|
|
<UL>
|
|
|
|
|
|
|
|
|
|
<LI>The Microsoft Windows 'nmake' build is resuscitated and provides
|
|
|
|
|
a default HAVE_STRTOLL setting in 'nmake.opt' which is suitable for
|
|
|
|
|
MSVC++ 14.0 ("Visual Studio 2015") and later but may be disabled in
|
|
|
|
|
order to compile with earlier compiler versions.</LI>
|
|
|
|
|
|
|
|
|
|
<LI>mingw-w64 cmake build fixes to not add libm</LI>
|
|
|
|
|
|
|
|
|
|
</UL>
|
|
|
|
|
|
|
|
|
|
<P><HR ALIGN=left>
|
|
|
|
|
|
|
|
|
|
<!-- ============================================================= -->
|
|
|
|
|
|
|
|
|
|
<A NAME="libtiff"><B><FONT SIZE="+3">C</FONT>HANGES IN LIBTIFF:</B></A>
|
|
|
|
|
|
|
|
|
|
<UL>
|
|
|
|
|
|
|
|
|
|
<LI>A great many issues discovered by fuzzers (via oss-fuzz and other reports) have been addressed.</LI>
|
|
|
|
|
|
|
|
|
|
<LI>EXIF 2.32 and GPS tags and functionality have been upgraded:
|
|
|
|
|
<UL>
|
|
|
|
|
<LI>Existing EXIF field definition of tags are upgraded to EXIF version 2.3.2</LI>
|
|
|
|
|
<LI>EXIF-GPS structure, tags and access functions are added as special CustomDirectory (like it was done for EXIF).</LI>
|
|
|
|
|
<LI>Reading error for FileSource and SceneType tags corrected.</LI>
|
|
|
|
|
</UL>
|
|
|
|
|
|
|
|
|
|
<LI>Make TIFFTAG_CFAPATTERN variable count.</LI>
|
|
|
|
|
|
|
|
|
|
<LI>Cmake configuration fixes for big-endian targets.</LI>
|
|
|
|
|
|
2020-12-19 13:44:58 -05:00
|
|
|
<LI><P>Added support for optional building against libdeflate for
|
|
|
|
|
faster Zip/Deflate compression/decompression.</P>
|
|
|
|
|
|
|
|
|
|
<P>We now have 2 kinds of builds with the Zip/Deflate codec:</P>
|
2020-12-19 13:37:12 -05:00
|
|
|
<UL>
|
|
|
|
|
<LI>zlib only</LI>
|
|
|
|
|
<LI>zlib + libdeflate</LI>
|
|
|
|
|
</UL>
|
|
|
|
|
|
|
|
|
|
<P>Speed improvements in the 35%-50% range can be expected when libdeflate is used.
|
|
|
|
|
Compression level up to 12 is now supported (capped to 9 when zlib is used).
|
|
|
|
|
Still requires zlib for situations where libdeflate cannot be used (that
|
|
|
|
|
is for scanline access, since libdeflate has no streaming mode)</P>
|
|
|
|
|
|
|
|
|
|
<P>Pseudo-tag TIFFTAG_DEFLATE_SUBCODEC=DEFLATE_SUBCODEC_ZLIB/DEFLATE_SUBCODEC_LIBDEFLATE
|
|
|
|
|
is added to control which subcodec (zlib or libdeflate) should be used (it defaults
|
|
|
|
|
of course to libdeflate, when it is available).
|
|
|
|
|
This is mostly aimed at being used on the writing side, to be able to reproduce
|
|
|
|
|
output of previous libtiff versions at a binary level, in situations where this would
|
|
|
|
|
be really needed. Or as a safety belt in case there would be unforeseen issues
|
|
|
|
|
with using libdeflate.
|
|
|
|
|
It can be used to know when libdeflate is available at runtime (DEFLATE_SUBCODEC_LIBDEFLATE
|
|
|
|
|
will be the default value in that situation).</P>
|
|
|
|
|
<P>Of course, deflate codestreams produced by libdeflate can be read by zlib, and vice-versa.</P>
|
|
|
|
|
|
|
|
|
|
</LI>
|
|
|
|
|
|
|
|
|
|
</UL>
|
|
|
|
|
|
|
|
|
|
<P><HR ALIGN=left>
|
|
|
|
|
|
|
|
|
|
<!-- ============================================================= -->
|
|
|
|
|
|
|
|
|
|
<A NAME="tools"><B><FONT SIZE="+3">C</FONT>HANGES IN THE TOOLS:</B></A>
|
|
|
|
|
|
|
|
|
|
<UL>
|
|
|
|
|
|
|
|
|
|
<LI>A great many issues discovered by fuzzers (via oss-fuzz and other reports) have been addressed.</LI>
|
|
|
|
|
|
|
|
|
|
<LI>ppm2tiff: support any bps value from 1 to 16.</LI>
|
|
|
|
|
|
|
|
|
|
<LI>tiff2ps, tiff2rgba: A default memory limit is now enforced (256MiB) and a '-M' option is added to allow the user to adjust the limit.</LI>
|
|
|
|
|
|
|
|
|
|
<LI>tiff2pdf, tiffcp: A default memory limit is now enforced (256MiB) and a '-m' option is added to allow the user to adjust the limit.</LI>
|
|
|
|
|
|
|
|
|
|
<LI>tiffcrop: A default memory limit is now enforced (256MiB) and a '-k' option is added to allow the user to adjust the limit.</LI>
|
|
|
|
|
|
|
|
|
|
<LI>tiff2pdf: fix "raw" copy of Deflate streams.</LI>
|
|
|
|
|
|
|
|
|
|
<LI>tiff2pdf.c: properly calculate datasize when saving to JPEG YCbCr</LI>
|
|
|
|
|
|
|
|
|
|
<LI>tiffcp: disable strip chopping when trying to convert to JBIG compression</LI>
|
|
|
|
|
|
|
|
|
|
</UL>
|
|
|
|
|
|
|
|
|
|
<P><HR ALIGN=left>
|
|
|
|
|
|
|
|
|
|
<!-- ============================================================= -->
|
|
|
|
|
|
|
|
|
|
<A NAME="contrib"><B><FONT SIZE="+3">C</FONT>HANGES IN THE CONTRIB AREA:</B></A>
|
|
|
|
|
|
|
|
|
|
<UL>
|
|
|
|
|
|
|
|
|
|
<LI>None</LI>
|
|
|
|
|
|
|
|
|
|
</UL>
|
|
|
|
|
|
|
|
|
|
</BODY>
|
|
|
|
|
</HTML>
|
