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# GraphicsMagick ChangeLog - 2011

2011-12-30 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - magick/pixel_cache.c (AcquireCacheNexus): MirrorVirtualPixelMethod was broken.

2011-12-29 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - configure.ac: Improve configuration support for Open64 Compiler Suite: Version 4.2.5.2 compiler with OpenMP.

> - coders/tga.c (ReadTGAImage): Assume that 32-bit TGA files have an alpha channel, even if they are not marked as such. Fixes SourceForge issue 3466908 "TGA with alpha".

> - configure.ac: Revert changeset eaa27346d8e9 which tried to avoid the OpenMP library being included multiple times because in some cases it is not included at all.

2011-12-24 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - magick/command.c (VersionCommand): For MSVC builds, report if SSE or SSE2 was used in the build.

> - Release GraphicsMagick 1.3.13.

> - Update libtiff to release 4.0.0

2011-12-23 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - Update libpng to release 1.5.7

2011-12-23 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - Update lcms2 to release 2.3

2011-12-22 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - Update Automake used to 1.11.2.

2011-12-21 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - www/OpenMP.rst: Updated with new results, including 12-core Intel Xeon E5649 and 16-core AMD Opteron 6220 "Bulldozer" CPUs.

> - magick/studio.h: Enable building and running correctly with Open64 Compiler Suite: Version 4.2.5.2 compiler with OpenMP.

> - magick/command.c (BenchmarkImageCommand): Add -rawcsv option to benchmark to output only original data in a CSV format.

2011-12-15 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - Fix various issues noticed when cross-compiling for the i686-w64-mingw32 target.

2011-12-11 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - magick/effect.c (ConvolveImage): For Q8 and Q16 builds use 'float' rather than 'double' for computations in order to improve performance with some compilers.

2011-12-10 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - magick/effect.c (ConvolveImage): Special-case grayscale images for better convolution performance.

2011-12-07 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - magick/command.c (BenchmarkUsage): -stepthreads now requires an argument which is the increment (starting at zero) to the number of threads for each step. This hastens benchmarking with a large number of cores.

2011-12-07 Glenn Randers-Pehrson <glennrp@simple...>

> - coders/png.c: Eliminate use of FARDATA. It's no longer needed and will no longer be supplied by png.h in libpng-1.6.0.

2011-12-06 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - magick/command.c (BenchmarkImageCommand): Added Karp-Flatt metric to benchmark output.

2011-12-05 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - GraphicsMagick.spec.in: Eliminate use of deprecated BuildPrereq in RPM spec file.

2011-11-28 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - magick/constitute.c (WriteImagesFile): Should set file in ImageInfo based on provided parameter rather than relying on it already being set. File argument was not being used.

2011-11-27 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - coders/dpx.c: For packed 10 bits, datums are now represented in the same (reversed) order for all RGB and YCbCr formats. Previously YCbCr 4:4:4 formats were not swapping the word datums because the only real-world files encountered did not swap the word datums. Resolves SourceForge bug 2057277 "DPX 10bit CbYCr Image seems to be wrong".

> - wand/magick_wand.c (MagickWriteImagesFile): New function to append images to a provided file handle. Resolves SourceForge issue 3046868 "added MagickWriteImagesFile".

> - magick/constitute.c (WriteImagesFile): New function to append images to a provided file handle.

> - magick/blob.c (OpenBlob): Don't rewind already open file handle passed to OpenBlob() since we don't know the intended state of this file handle, and because it prevents appending to an existing file. This change is part of the fix for SourceForge issue 3046868 "added MagickWriteImagesFile".

> - wand/magick_wand.c (MagickSetImageSavedType): New function to allow specifying the storage type used when saving the file (rather than changing the current image characteristics). Resolves SourceForge patch 3110185 "MagickGetImageSavedType()/MagickSetImageSavedType() API". (MagickGetImageSavedType): Return the storage type which will be used when the image is saved.

> - magick/annotate.c (RenderFreetype): Add support for drawing text using a bitmap font. Resolves SourceForge patch 3230719 "add support for drawing text with bitmap font to annotate.c".

> - magick/profile.c (AppendImageProfile): Don't leak profile buffer while appending a chunk to an existing profile. Resolves SourceForge patch 3294496 "Fix a memory leak in profile.c(AppendImageProfile)".

2011-11-26 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - magick/command.c (BenchmarkImageCommand): Include the number of threads used in the benchmark results output. (BenchmarkImageCommand): New benchmark option -stepthreads to execute the specified command with an increasing number of threads to measure how an algorithm benefits from threading. (BenchmarkImageCommand): Fix benchmark argument parsing so it is not order dependent. (BenchmarkImageCommand): Add a speedup indication to -stepthreads output.

> - config/delegates.mgk.in: File names in gnuplot files need to be surrounded by double quotes or gnuplot parser will reject them.

2011-11-25 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - magick/effect.c (GetMedianList): Return PixelPacket via pointer rather than by value.

> - version.sh: For snapshots packages, PACKAGE_CHANGE_DATE now uses a form like "snapshot-20111121" rather than "unreleased" so it is possible to determine the vintage of an installed snapshot.

2011-11-21 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - coders/tga.c (ReadTGAImage): Fix for poor TGA reading performance due to excessive use of GetBlobByte(). Performance is fixed by adding local buffering. Fixes SourceForge bug 3439531 "Slow TGA reading".

2011-11-19 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - magick/effect.c (AdaptiveThresholdImage): More performance improvements.

2011-11-06 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - magick/analyze.c (GetImageBoundingBox): Add a special case to handle absolute color comparison.

2011-11-05 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - png: Update libpng to 1.5.6 release.

2011-10-30 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - configure.ac: Avoid linker warnings when building GraphicsMagick regarding OpenMP library being included multiple times.

2011-10-29 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - coders/meta.c (GetIPTCStream): Eliminate possible use of uninitialized data when parsing long format tag length.

2011-10-23 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - magick/import.c: Move low-level pixel import functions from constitute.c to new file import.c.

> - magick/export.c: Move low-level pixel export functions from constitute.c to new file export.c.

> - magick/floats.c: Move Richard Nolde's floating point conversion functions from constitute.c to new file floats.c.

2011-10-21 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - libtool: Updated to libtool 2.4.2.

> - configure.ac: Automake conditional for HasPNG can not itself be conditional. Indent PNG script code appropriately.

2011-10-16 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - Makefile.am (AUTOMAKE_OPTIONS): Distribute lzma-compressed tarball in 'xz' format rather than deprecated 'lzma' format.

2011-10-13 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - configure.ac: Fix syntax error with GSCMYKDevice ('==' rather than '='). Thanks to Glenn Randers-Pehrson for noticing and reporting the issue.

2011-10-12 Glenn Randers-Pehrson <glennrp@simple...>

> - Use a "for" loop in configure.ac to find libpngNN.

2011-10-08 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - wand/pixel_wand.c (NewPixelWand): Invoke InitializeMagick() automatically in case user forgets to do so.

> - wand/drawing_wand.c (NewDrawingWand): Invoke InitializeMagick() automatically in case user forgets to do so.

> - wand/magick_wand.c (NewMagickWand): Invoke InitializeMagick() automatically in case user forgets to do so.

> - png: libpng sources were updated to release 1.5.4.

2011-10-07 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - coders/tiff.c (ReadTIFFImage): TIFFGetField() on TIFFTAG_OPIIMAGEID was causing a crash due to an argument mis-match between GraphicsMagick and libtiff. Also fixed a few GCC 4.6 warnings. Problem was reported by Dylan Millikin.

2011-10-02 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - wand/magick_wand.c (MagickSetDepth): New function to set the depth used when reading from an image format which requires that the depth be specified in advance. (MagickReadImageBlob): Use BlobToImage() to read the blob.

> - magick/effect.c (AdaptiveThresholdImage): Reduce or eliminate expensive floating point calculations when possible.

> - wand/magick_wand.c (MagickSetFormat): New Wand function to allow setting the file or blob format before it has been read.

2011-09-24 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - VisualMagick/installer/inc/tasks-install-perlmagick.isx: Windows setup installer now installs PerlMagick built against ActiveState Perl v5.12.4 build 1205.

> - magick/annotate.c (RenderFreetype): Eliminate spurious "out of memory" exceptions due to empty text string.

2011-09-18 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - magick/module.c (ModuleAliases): PAM format is handled by PNM coder.

> - jpeg: Record that jpeg sources were updated to release v8c.

> - lcms: Record that lcms sources were updated to release 2.2.

> - png: Record that png sources were updated to release 1.5.4.

> - tiff: Record that tiff sources were updated to release 4.0.0beta7.

> - xml: Record that libxml2 sources were updated to release 2.7.8.

> - zlib: Record that zlib sources were updated to release 1.2.5.

> - VisualMagick/installer/inc/body.isx: Set MagickConfigDirectory for DLL build so that .mgk files are put in application top directory. This makes installation layout between static and DLL builds more similar.

2011-08-23 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - magick/list.c (AppendImageToList): Documentation for AppendImageToList() was wrong. Problem was reported by Brad Harder.

2011-08-20 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - magick/display.c (MagickXMagickCommand): Display 'save' and 'print' should display useful error details. Problem was reported by Brad Harder.

2011-08-19 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - magick/semaphore.c (AllocateSemaphoreInfo): Enable pthread mutex error checking if MAGICK_DEBUG is defined when the code is compiled. This mode helps validate that mutexes are used correctly. No longer enable recursive mutexes since the GraphicsMagick logic should be able to operate without this assistance.

2011-08-10 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - coders/dcm.c (DCM_ReadOffsetTable): Fix wrong cast noticed when compiling with LLVM.

2011-08-08 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - magick/enhance.c (LevelImageChannel): Fix documented prototype. Problem was reported by Brad Harder.

2011-07-31 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - magick/pixel_cache.c (AcquireOneCacheViewPixelInlined): Only use image colormap if the image storage class is PseudoClass. Eliminates a core dump when the image is in CMYK space.

2011-07-20 Glenn Randers-Pehrson <glennrp@simple...>

> - coders/png.c: account for changed typecast of png_get_iCCP argument in libpng15

2011-07-20 Glenn Randers-Pehrson <glennrp@simple...>

> - configure.ac: look for libpng15, libpng14, libpng12, and libpng in that order.

2011-07-17 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - png: Update to libpng 1.5.4.

2011-06-15 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - www/docutils-articles.css: Style sheet syntax fixes. Patch by Mark Mitchell.

> - scripts/html_fragments.py: Use proper quoting in banner search HTML. Patch by Mark Mitchell.

2011-06-13 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - magick/image.c (SetImageType): Fix documentation for enumeration names. The types need "Type" as part of the name. Problem was reported by Brad Harder.

2011-06-09 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - scripts/html_fragments.py (banner_template): HTML banner improvements to go along with style-sheet changes.

> - www/docutils-articles.css: Style-sheet improvements by Mark Mitchell to work better on small screens.

2011-06-07 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - www/project.rst: Add a page for links to pages about the project. The intention is to use this page to reduce the clutter in the banner.

2011-05-31 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - doc/options.imdoc: Document tiff:group-three-options define.

> - coders/tiff.c (WriteTIFFImage): Add support for a tiff:group-three-options define to allow power-users to set the value of the GROUP3OPTIONS tag.

2011-05-28 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - www/Makefile.am: Include Hg.*, remove CVS.*.

> - scripts/html_fragments.py (nav_template): CVS tab changed to Source, which links to Hg.html.

> - www/Hg.rst: Document Hg repository access.

2011-05-23 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - scripts/rst2htmldeco.py (docutils_opts): Do not include a datestamp of any kind since it unnecessarily churns the repository, particularly if the output file did not otherwise change.

> - INSTALL-unix.txt: Fix typo in description of --without-lzma.

2011-05-08 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - coders/jpeg.c (ReadJPEGImage): Treat exceptions thrown by jpeg_finish_decompress() as warnings rather than errors. (JPEGErrorHandler): Handle JPEG errors directly rather than passing them to a message formatting routine for handling. Also added useful logging. (JPEGMessageHandler): Only handle JPEG traces and warnings. Also added useful logging.

2011-05-07 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - coders/jpeg.c (EmitMessage): Treat an unhandled EXP marker as a warning rather than a hard error. Resolves SourceForge issue 3297995 "Unsupported marker type 0xdf".

2011-05-04 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - magick/image.c (AppendImages): If the input list only contains one image, then return a new handle to the one image in the list rather than reporting an exception. Problem was reported by Ravil Rakhimgulov ("Hunter1972").

2011-04-28 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - magick/image.c (SetImageColorRegion): New function to set the constant pixel color for a specified region of the image. (AppendImages): Only color background pixels when needed.

2011-04-24 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - coders/tiff.c (WriteTIFFImage): Added TIFF writer support for JBIG1 compression. Not proven to work yet.

> - magick/image.h (CompressionType): Added Group3Compression as an alias for already existing FaxCompression. Added JPEG2000Compression, JBIG1Compression, and JBIG2Compression for future use.

2011-04-23 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - configure.ac: For MinGW32 use 64-bit value formatting conventions which will work with any version of the WIN32 CRT.

2011-04-21 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - coders/jpeg.c (WriteJPEGImage): Properly handle errors reported by the JPEG library when writing. Up to now, JPEG library simply invoked exit(), which crashed or hung if driven by Magick++ API. Fixes SourceForge bug 3106947 "Assertion failure when saving an "invalid" image as JPEG".

> - magick/module.c (ModuleAliases): Delete "XTRNBSTR"-entry. Fix by Stefan Graff.

> - contrib/win32/ATL7/ImageMagickObject/ImageMagickObject.cpp (Perform): Member "Perform" - out-commented SafeArrayAccessData and following SafeArrayUnaccessData. Fix by Stefan Graff.

> - contrib/win32/ATL/ImageMagickObject/MagickImage.cpp: Delete "XTRNSTREAM"-branch because "XTRNSTREAM" doesn't exist anymore. Fix by Stefan Graff.

> - coders/xtrn.c: In function "WriteXTRNImage" there is no branch for XTRNARRAY. Fix by Stefan Graff.

> - PerlMagick/Magick.xs: AdaptiveThreshold offset argument was being parsed into an 'unsigned long' rather than 'double' as it should have been. This resulted in inability to handle negative offsets. Fixes SourceForge bug 3288735 "PerlMagick issue with AdaptiveThreshold".

> - coders/jpeg.c (ReadIPTCProfile): JPEG may deliver IPTC profile in chunks but code was only allowing one chunk, even though it was otherwise prepared to concatenate chunks. Fixes SourceForge bug 2978422 "Clipping paths in JPG images are truncated".

> - magick/utility.c (GetToken): Fix case where parser may run off end of string. Also add asserts to check for passing null pointer.

2011-04-10 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - magick/channel.c (ChannelImage): Report an error if the requested channel is not compatible with the image colorspace. Only deals with CMYK/RGB conflicts. Resolves SourceForge issue 3283046 "Bug in CMYK".

2011-03-15 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - coders/txt.c (ReadTXTImage): Throw error if attempt to read empty file.

> - coders/{fits.c,mac.c,miff.c,pcd.c,pict.c,ps3.c,rla.c,txt.c}: Format requires seekable stream.

> - coders/pnm.c (WritePNMImage): Implement writer for PAM format.

> - coders/ept.c (WriteEPTImage): Fix error handling for case when TIFF writer fails.

> - magick/constitute.c (ReadImage): Use of GetBlobStatus() to evaluate image reader success is bogus. (MagickGetQuantumSamplesPerPixel): New private method to return the number of samples returned per pixel for a given quantum type.

2011-03-14 Glenn Randers-Pehrson <glennrp@simple...>

> - coders/png.c (WriteOnePNGImage(): Fixed a rounding error in writing the pHYs chunk (it was truncating instead of rounding).

2011-02-20 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - magick/magick.c (MagickPanicSignalHandler,MagickSignalHandler): Don't invoke DestroyMagick() since there may be OpenMP worker threads still running which are using data which would be deallocated. Instead we invoke PurgeTemporaryFiles() to remove any existing temporary files. Valgrind will report leaks if the program is terminated by a signal but this causes no actual harm. Resolves SourceForge issue 3165456 "^C causes semaphore failure in MacOSX". (MagickPanicSignalHandler): Invoke abort() in panic signal handler so that we will reliably get a core dump.

> - magick/tempfile.c (PurgeTemporaryFiles): New private function to remove any existing temporary files but without destroying temporary file semaphore.

2011-02-13 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - coders/pnm.c (ReadPNMImage): Fix mis-placed break in PAM header parser.

> - wand/magick_wand.c (MagickWriteImageBlob): Improve the documentation to mention the related use of MagickSetImageFormat() and MagickResetIterator().

2011-02-07 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - magick/xwindow.c (MagickXBestFont): Check for a few more common font names, and ensure to always check for "fixed" as a final fallback.

2011-02-06 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - config/delegates.mgk.in: Added gs-cmyk entry. Used if '-type ColorSeparation' is specified on the command-line prior to the PDF or Postscript file name. This entry specifies use of the Ghostscript PAM driver which is capable of supporting CMYK output. This may be useful if it is desired to apply CMYK color profiles to the image returned from the PDF. As fair warning, it seems that Ghostscript 8.62 outputs CMYK even if the PDF was in RGB space if the PAM driver is used.

> - coders/pnm.c (ReadPNMImage): Add support for reading netpbm's PAM format.

2011-02-01 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - tests/rwblob.c, tests/rwfile.c: Fixes to help tests work when testing with multiple frames.

> - coders/sgi.c: SGI format is not documented to support multiple frames. Remove the half-baked extension for it.

2011-02-01 Glenn Randers-Pehrson <glennrp@simple...>

> - coders/bmp.c (ReadBMPImage): Changed file_size greater than expected from a corrupt-image error to a debug log entry. File_size too small is still an error, and made that so also for BI_RGB images which were previously exempted from the test.

2011-01-30 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - tests/rwblob.c, tests/rwfile.c: Validate the data in each image frame, validate that each read returns the same number of frames, and validate that the correct number of frames was ultimately returned.

> - magick/blob.c (SyncBlob): Disable bogus code which attempted to replicate the blob I/O object across all images in the list when the blob is synced. Leave a less bogus bit of code in place (but commented out) in case such functionality is deemed to actually be needed in the future. The previous code was copying structs on top of each other, including a pointer member to a semaphore.

2011-01-23 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - www/Changes.rst: Add a new Changes page to wrap up the yearly change logs to lessen download size.

> - scripts/changelog2rst.sh: Simple utility to format ChangeLog format into something resembling reStructuredText.

> - www/Makefile.am: Use reStructuredText to format the ChangeLog files to HTML so that we can inherit the improved formatting and page style.

> - coders/pnm.c (ReadPNMImage): Support for multi-frame PNM was botched due to on-going edits to support PAM format.

2011-01-16 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - wand/magick_wand.c (MagickDescribeImage): Was sending descriptive output to stdout rather than returning it in an allocated string as intended.

2011-01-09 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - magick/draw.c, wand/drawing_wand.c (MvgPrintf): Update to handle C99 vsnprintf() return values.

> - magick/draw.c, wand/drawing_wand.c (DrawAnnotation): Linux glibc does not pass extended text characters if "%.1024s" formatting convention is used. Apparently it assumes that such characters may be UTF8 and returns -1 rather than outputting the string, even if it is assured to fit.

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