GraphicsMagick 1.3.18 Released

GraphicsMagick 1.3.18 is now available.  There are quite a lot of 
improvements and bug fixes in this release.  Windows 64-bit is now 
officially supported and a 64-bit install package is available. 
Please note that if Ghostscript is desired, a 64-bit ghostscript must 
be installed if 64-bit GraphicsMagick is installed.

The GraphicsMagick web site is at "http://www.graphicsmagick.org/".
The news page which describes the details of the release is at
"http://www.graphicsmagick.org/NEWS.html".

Please report any bugs you may encounter.

The following are the new features/fixes in this release:

Special Issues:

   * Due to GCC bug 53967, several key agorithms (e.g. convolution)
     may execute much faster (e.g. 2-3X) for x86-64 and/or when SSE is
     enabled for floating point math (`-mfpmath=sse`) if the GCC option
     `-frename-registers` is used. Default 32-bit builds do not
     experience the problem since they use '387 math.  It is not clear
     in what version of GCC this problem started but it was not noticed
     by the developers until the GCC 4.6 timeframe.  Other compilers do
     not suffer from this bug.

Security Fixes:

   * None.

Bug fixes:

   * Fixed bug with format substitutions if input string ends with a
     single '%'.

   * BMP: Fixed an old bug with decoding chromaticity primaries.

   * PNG: Fixed reading of interlaced images.  Fix reading of sub-8-bit
     palette and grayscale images.  Some PNG sub-formats were written
     incorrectly.  Fix crash in PNG8 writer if image colors happened to
     be non-zero but image was not actually colormapped.

   * PNG: Configure script now also searches for libpng versions 16 and
     17.

   * TIFF: Fix a crash which was noticed when writing RGBA separated
     (planar) format.

   * `--enable-symbol-prefix` was not prefixing all of the C
     symbols. Some core C library functions were not prefixed.  This
     option applies to the Wand library API as well now.

   * C API: When input is from a user-provided file descriptor, the
     file position is restored after reading the file header bytes.
     Previously the file position was rewound to the beginning of the
     file.  This allows reading embedded image data from the current
     offset in a file, and allows continuing to use the stream after
     GraphicsMagick has returned the image.

   * C API: It is now possible to invoke CloseBlob() multiple times.

   * display: Display was supposed to respond to +/-usePixmap, but was
     not. It was responding to +/-use_pixmap.  Now it responds to both.

   * Windows/VisualMagick: Fix building GraphicsMagick with Intel ICC
     compiler driven by Visual Studio Professional 2012.

   * Windows: Avoid a crash and produce a useful diagnostic if
     Ghostscript is needed but not yet installed.


New Features:

   * GM utility: New 'batch' command was contributed by Kenneth Xu
     which supports executing any number of other GM utility
     sub-commands in a single invokation in a sort of "batch" script.
     Input may be piped from standard input, from a specified file, or
     from a 'GM >' command prompt.  This utilities front-end allows any
     other program/script to drive 'gm' using a co-process model and
     speeds up execution by eliminating utility start-up/shut-down
     time.

   * WIN64 (64-bit Windows): Windows 64-bit is now officially supported.

   * convert/mogrify: Now support -auto-orient to automatically rotate
     the image upright for viewing based on its current orientation
     setting.  Also support -orient to support setting the current
     image orientation.  Please note that the orientation property of
     EXIF profiles is not yet updated so the EXIF profile will be wrong
     after using -auto-orient.

   * C API: AutoOrientImage(), new New function to automatically orient
     the image so that it is upright for normal viewing.

   * Wand API: MagickGetImagePage()/MagickSetImagePage(), new functions
     to support getting and setting the image page size and offsets.

   * PNG: Added PNG48 and PNG64 support. Added PNG00 support (png
     encoder that inherits its color-type and bit-depth from the input,
     if the input was a PNG datastream).

Feature improvements:

   * GraphicsMagick TAP tests may now be run stand-alone using Perl's
     'prove' TAP test driver.

Performance Improvements:

   * Detection of glob specifications in file names is more efficient.

Windows Delegate Updates:

   * None.

Behavior Changes:

   * ltdl: Libltdl is no longer bundled.  Libltdl must be previously
     installed on the system in order to build the modules
     configuration.

   * AppendImages() now converts subsequent images to the colorspace of
     the first image, and no longer converts the first image to RGB.
     Instead, it is assumed the user knows what she is doing.

   * SetImageColorRegion() no longer automatically converts the image
     to RGB.  The user is responsible for assuring that the provided
     color is in the same colorspace as the image.

Bob
-- 
Bob Friesenhahn
[email protected], http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/

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