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Changes in TIFF v3.4beta007

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<font size="+3">T</font>IFF <font size="+2">C</font>HANGE <font size="+2">I</font>NFORMATION

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Current Version: v3.4beta007

Previous Version: v3.4beta004

Master FTP Site: ftp.sgi.com (192.48.153.1), directory graphics/tiff

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:

Changes in the software configuration

Changes in libtiff

Changes in the portability support

Changes in the tools

<font size="+3">C</font>HANGES IN THE SOFTWARE CONFIGURATION:

bit order was corrected for Pentium systems

a new define, <tt>HOST_BIGENDIAN</tt>, was added for code that

   wants to statically use information about native cpu byte order

<font size="+3">C</font>HANGES IN LIBTIFF:

the G3/G4 decoder was replaced by a new one that is faster and

   has smaller state tables

Niles Ritter's client tag extension hooks were added

a new routine <tt>TIFFCurrentDirOffset</tt> was added for

   applications that want to find out the file offset of a TIFF directory

the calculation of the number of strips in an image was corected

   for images with certain esoteric configurations

a potential memory leak (very unlikely) was plugged

the <tt>TIFFReadRGBAImage</tt> support was completely rewritten

   and new, more flexible support was added for reading images into

   a fixed-format raster

YCbCr to RGB conversion done in the <tt>TIFFReadRGBAImage</tt> support

   was optimized

a bug in JPEG support calculation of strip size was corrected

the LZW decoder was changed to initialize the code table to zero

   to lessen potential problems that arise when invalid data is decoded

tiffcomp.h is now aware of OS/2

some function prototypes in tiffio.h and tiffiop.h

   that contained parameter

   names have been changed to avoid complaints from certain compilers

<font size="+3">C</font>HANGES IN THE PORTABILITY SUPPORT:

Makefile.in has been corrected to use the parameters

   chosen by the configure script

<font size="+3">C</font>HANGES IN THE TOOLS:

<tt>fax2ps</tt> has been rewritten and moved over from the user

   contributed software

an uninitialized variable in <tt>pal2rgb</tt> has been fixed

<tt>ras2tiff</tt> now converts 24-bit RGB raster data so that

   samples are written in the proper order

<tt>tiff2ps</tt> has been updated to include fixes

    and enhancements from Alberto Accomazzi

<tt>tiffcp</tt> now has a <tt>-o</tt> option to select a directory

    by file offset

<tt>tiffinfo</tt> is now capable of displaying the raw undecoded

    image data in a file

<tt>tiffgt</tt> has been rewritten to use the new <tt>TIFFRGBAImage</tt>

   support and to handle multiple files

 TIFF home page.

<address></address>

Sam Leffler / sam@engr.sgi.com

Last updated $Date: 1999/08/09 20:21:21 $.