src/tiff/html/v3.5.7.html

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   4 Changes in TIFF v3.5.7
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  12 <BASEFONT SIZE=4>
  13 <B><FONT SIZE=+3>T</FONT>IFF <FONT SIZE=+2>C</FONT>HANGE <FONT SIZE=+2>I</FONT>NFORMATION</B>
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  16 <UL>
  17 <HR SIZE=4 WIDTH=65% ALIGN=left>
  18 <B>Current Version</B>: v3.5.7<BR>
  19 <B>Previous Version</B>: <A HREF=v3.5.6-beta.html>v3.5.6 Beta</a><BR>
  20 <B>Master FTP Site</B>: <A HREF="ftp://ftp.remotesensing.org/pub/libtiff">ftp.remotesensing.org</a>, directory pub/libtiff</A><BR>
  21 <B>Master HTTP Site</B>: <A HREF="http://www.remotesensing.org/libtiff/">http://www.remotesensing.org/libtiff</a>
  22 <HR SIZE=4 WIDTH=65% ALIGN=left>
  23 </UL>
  24
  25 <P>
  26 This document describes the changes made to the software between the
  27 <I>previous</I> and <I>current</I> versions (see above).
  28 If you don't find something listed here, then it was not done in this
  29 timeframe, or it was not considered important enough to be mentioned.
  30 The following information is located here:
  31 <UL>
  32 <LI><A HREF="#configure">Changes in the software configuration</A>
  33 <LI><A HREF="#libtiff">Changes in libtiff</A>
  34 <LI><A HREF="#tools">Changes in the tools</A>
  35 <LI><A HREF="#lzwkit">Changes in the LZW compression kit</A>
  36 </UL>
  37 <p>
  38 <P><HR WIDTH=65% ALIGN=left>
  39
  40 <!--------------------------------------------------------------------------->
  41
  42 <A NAME="configure"><B><FONT SIZE=+3>C</FONT>HANGES IN THE SOFTWARE CONFIGURATION:</B></A>
  43
  44 <UL>
  45 <li> libtiff/libtiff.def: Brent Roman submitted new version adding
  46 serveral missing entry points.  Also add a few other entry points
  47 later.
  48
  49 <li> configure, Makefile.in, etc: added support for OPTIMIZER being
  50         set from config.site.
  51 <li> config.guess: updated wholesale to an FSF version apparently
  52         from 1998 (as opposed to 1994).  This is mainly inspired by
  53         providing for MacOS X support.
  54
  55 <li> configure/config.site: modified to check if -lm is needed for
  56         MACHDEPLIBS if not supplied by config.site.  Needed for Darwin.
  57 <li> libtiff/tiff.h: Applied hac to try and resolve the problem
  58         with the inttypes.h include file on AIX. (Bug 39)
  59
  60 <li> configure, *Makefile.in: Various changes to improve configuration
  61         for HP/UX specifically, and also in general.  (Bug 40) They include:
  62 <ul>
  63  <li> Try to handle /usr/bin/sh instead of /bin/sh where necessary.
  64  <li> Upgrade to HP/UX 10.x+ compiler, linker and dso options.
  65  <li> Fixed mmap() test to avoid MMAP_FIXED ... it isn't available on HP
  66  <li> Use -${MAKEFLAGS} in sub makes from makefiles.
  67  <li> Fixed SCRIPT_SH/SHELL handling.
  68 </ul>
  69 <li> configure: Changes for DSO generation on AIX provided by
  70         John Marquart <jomarqua@indiana.edu>.
  71
  72 <li> configure, libtiff/Makefile.in: Modified to build DSOs properly
  73         on Darwin thanks to Robert Krajewski (rpk@alum.mit.edu) and
  74         Keisuke Fujii (fujiik@jlcuxf.kek.jp).
  75
  76 <li> configure, libtiff/Makefile.in: applied OpenBSD patches as per bug 61.
  77
  78 <li> Makefile.in: added DESTDIR support as per bug 60.
  79
  80 <li> libtiff/tif_jpeg.c: Define HAVE_BOOLEAN on windows if RPCNDR.H
  81         has been included.
  82 <li> man/Makefile.in: add TIFFClientOpen link as per debian submitted
  83         bug 66.
  84 <li> libtiff/Makefile.in: Fixed @DSOSUB_VERSION to be @DSOSUF_VERSION@
  85         in two places.
  86 </UL>
  87
  88 <P><HR WIDTH=65% ALIGN=left>
  89
  90 <!--------------------------------------------------------------------------->
  91
  92 <A NAME="libtiff"><B><FONT SIZE=+3>C</FONT>HANGES IN LIBTIFF:</B></A>
  93
  94
  95 <UL>
  96 <li> tif_fax3.c: keep rw_mode flag internal to fax3 state to remember
  97         whether we are encoding or decoding.  This is to ensure graceful
  98         recovery if TIFFClientOpen() discovers an attempt to open a compressed
  99         file for "r+" access, and subsequently close it, as it resets the
 100         tif_mode flag to O_RDONLY in this case to avoid writes, confusing the
 101         compressor's concept of whether it is in encode or decode mode.
 102 <li> tif_luv.c/tiff.h/tiffio.h:
 103         New version of TIFF LogLuv (SGILOG) modules contributed by Greg Ward
 104         (greg@shutterfly.com).  He writes:
 105
 106 <ol>
 107         <li> I improved the gamut-mapping function in tif_luv.c for imaginary
 108         colors, because some images were being super-saturated on the input
 109         side and this resulted in some strange color shifts in the output.
 110
 111         <li> I added a psuedotag in tiff.h to control random dithering during
 112         LogLuv encoding.  This is turned off by default for 32-bit LogLuv and
 113         on for 24-bit LogLuv output.  Dithering improves the average color
 114         accuracy over the image.
 115
 116         <li> I added a #define for LOG_LUV_PUBLIC, which is enabled by default in
 117         tiffio.h, to expose internal routines for converting between LogLuv and
 118         XYZ coordinates.  This is helpful for writing more efficient,
 119         specialized conversion routines, especially for reading LogLuv files.
 120 </ol>
 121
 122 <li> libtiff/tif_dirinfo.c: don't declare tiffFieldInfo static on VMS.
 123
 124 <li> Added TIFFTAG_COPYRIGHT support.
 125 <li> tif_getimage.c: Added support for 16bit minisblack/miniswhite
 126         images in RGBA interface.
 127 <li> libtiff/tif_dirinfo.c: removed duplicate TIFFTAG_PHOTOSHOP as per
 128         bug 44.
 129 <li> libtiff/tif_dirwrite.c: Added support for TIFF_VARIABLE2 in the
 130         case of writing TIFF_BYTE/TIFF_SBYTE fields as per bug 43.
 131
 132 <li> libtiff/tif_dirinfo.c: Modified the TIFF_BYTE definition for
 133         TIFFTAG_PHOTOSHOP to use a writecount of TIFF_VARIABLE2 (-3) to
 134         force use of uint32 counts instead of short counts.
 135
 136 <li> libtiff/tif_dirinfo.c: moved pixar and copyright flags to
 137         ensure everything is in order.
 138
 139 <li> Integrated experimental OJPEG support from Scott Marovich of HP.
 140
 141 <li> libtiff/tif_open.c: Seek back to zero after failed read,
 142         before writing header.
 143
 144 <li> libtiff/tiff.h, libtiff/tif_fax3.c: added check for __LP64__
 145         when checking for 64 bit architectures as per bugzilla bug 67.
 146 <li> libtiff/tif_getimage.c: Use memmove() instead of TIFFmemcpy()
 147         in TIFFReadRGBATile() to avoid issues in cases of overlapping
 148         buffers.  See Bug 69 in Bugzilla.
 149 <li> libtiff/tif_getimage.c: Don't complain for CMYK (separated)
 150         images with more than four samples per pixel as per bug 73.
 151
 152 <li> libtiff/tif_getimage.c: relax handling of contig case where
 153 there are extra samples that are supposed to be ignored as per bug 75.  This
 154 should now work for 8bit greyscale or palletted images.
 155
 156 <li> libtiff/tif_packbits.c: fixed memory overrun error as per bug 77.
 157
 158 <li> libtiff/tif_getimage.c: Fixed problem with reading strips or
 159 tiles that don't start on a tile boundary.  Fix contributed by
 160 Josep Vallverdu (from HP), and further described in bug 47.
 161
 162 <li> libtif/tif_fax3.c: Removed #ifdef PURIFY logic, and modified to
 163         always use the "safe" version, even if there is a very slight
 164         cost in performance as per bug 54.
 165 <li> libtiff/tif_lzw.c: added dummy LZWSetupEncode() to report an
 166         error about LZW not being available.
 167
 168 <li> libtiff/tif_dir.c: propagate failure to initialize compression
 169         back from TIFFSetField() as an error status, so applications can
 170         detect failure.
 171
 172 <li> libtiff/tif_lzw.c: Avoid MS VC++ 5.0 optimization bug as per bug 78.
 173
 174 <li> libtiff/tif_dirwrite.c: added TIFFRewriteDirectory() function.
 175 Updated TIFFWriteDirectory man page to include TIFFRewriteDirectory.
 176
 177 <li> libtiff/tiff.h: I have created COMPRESSION_CCITT_T4,
 178         COMPRESSION_CCITT_T6, TIFFTAG_T4OPTIONS and TIFFTAG_T6OPTIONS aliases
 179         in keeping with TIFF 6.0 standard in tiff.h as per bug 83.
 180
 181 <li> Added PHOTOMETRIC_ITULAB as per bug 90.
 182
 183 </UL>
 184
 185 <P><HR WIDTH=65% ALIGN=left>
 186
 187 <!-------------------------------------------------------------------------->
 188
 189 <A NAME="tools"><B><FONT SIZE=+3>C</FONT>HANGES IN THE TOOLS:</B></A>
 190
 191 <UL>
 192 <li> Brent Roman contributed updated tiffcp utility (and tiffcp.1)
 193         with support for extracting subimages with the ,n syntax, and also
 194         adding the -b bias removal flag.
 195 <li> tiff2ps.c/tiff2ps.1: Substantial changes to tiff2ps by
 196         Bruce A. Mallett, including a faster encoder, fixes for level
 197         2 PostScript, and support for the imagemask operator.
 198 <li> fax2ps.c: Helge (libtiff at oldach.net) submitted fix
 199 that corrects behaviour for non-Letter paper
 200 sizes. (Bug 35) It fixes two problems:
 201 <br>
 202         Without scaling (-S) the fax is now centered on the page size specified
 203         with -H and/or -W. Before, fax2ps was using an obscure and practially
 204         useless algorithm to allocate the image relative to Letter sized paper
 205         which sometime sled to useless whitespace on the paper, while at the
 206         same time cutting of the faxes printable area at the opposite border.
 207 <br>
 208
 209         Second, scaling now preserves aspect ratio, which makes unusual faxes
 210         (in particular short ones) print properly.
 211
 212 <li> thumbnail.c: changed default output compression
 213         to packbits from LZW since LZW isn't generally available.
 214 <li> tiff2rgba.c: added -n flag to avoid emitting alpha component. Also added
 215 a man page for tiff2rgba.
 216
 217 <li> tiffcmp.c: Fixed multi samples per pixel support for ContigCompare
 218 as per bug 53.
 219 Updated bug section of tiffcmp.1 to note tiled file issues.
 220
 221 <li> libtiff/tif_getimage.c: Fixed so that failure is properly
 222         reported by gtTileContig, gtStripContig, gtTileSeparate and
 223         gtStripSeparate as per bug 51.
 224
 225
 226 </UL>
 227
 228 <P><HR WIDTH=65% ALIGN=left>
 229
 230 <!--------------------------------------------------------------------------->
 231
 232 <A NAME="lzwkit"><B><FONT SIZE=+3>C</FONT>HANGES IN THE LZW COMPRESSION KIT:</B></A>
 233 <UL>
 234         <LI> Rewrote lzw patching process so that is required to enable full
 235         LZW support is to drop the tif_lzw.c from the
 236         libtiff-lzw-compression-kit over the one in the libtiff directory.
 237
 238         <LI> Some changes were made to make recovery from failure to
 239         initialize the LZW compressor more graceful.
 240
 241         <LI> Note that as distributed libtiff support LZW decompression, but
 242         not LZW compression.
 243 </UL>
 244
 245 <!--------------------------------------------------------------------------->
 246
 247 <A NAME="contrib"><B><FONT SIZE=+3>C</FONT>HANGES IN THE CONTRIB AREA:</B></A>
 248 <UL>
 249 <li> Fixed distribution to include contrib/addtiffo/tif_ovrcache.{c,h}.
 250 </UL>
 251
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 256 Last updated $Date: 2004/11/26 14:37:20 $.
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