GraphicsMagick ChangeLog - 2014

2014-12-31 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• coders/wpg.c (UnpackWPGRaster): Fix some compilation and valgrind warnings.

• NEWS.txt: Updated news again.

2014-12-31 Fojtik Jaroslav <JaFojtik@seznam.cz>

• coders/wpg.c Fixed 2bpp issue.

2014-12-31 Glenn Randers-Pehrson <glennrp@simple.dallas.tx.us>

• coders/png.c: Validate MHDR chunk length.

• coders/png.c: Use ReadBlob() once instead of ReadBlobByte() in a loop.

• coders/png.c: Avoid reading beyond the end of a tEXt keyword.

2014-12-30 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• coders/xpm.c (ReadXPMImage): Detect short XPM rows and report error to user rather than overrunning a buffer.

• coders/pcx.c (ReadPCXImage): Validate that header bytes per line is sufficient to contain the indicated data.

• coders/pdb.c (ReadPDBImage): Fix indexes array overrun for 2 and 4-bit PDB image files.

• coders/xpm.c (ReadXPMImage): Avoid strncpy() of overlapping memory. Fix memory leaks in error paths.

• coders/viff.c (ReadVIFFImage): Validate index before using it to access colormap.

• coders/{cineon.c, dpx.c} (StringToAttribute): Can't use strlcpy() to copy string which might not be NULL-terminated since strlcpy() continues searching for end of string after size bytes have been copied.

• coders/meta.c (convertHTMLcodes): Avoid strcpy() of overlapping memory.

2014-12-29 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• www/process.rst: Update description of development process to be more aligned with the process actually used.

• coders/wpg.c (ReadWPGImage): Avoid use of NULL pointer returned from FlipImage(), FlopImage(), and RotateImage().

• coders/rle.c (ReadRLEImage): URT RLE reader is now more robust with errant files.

2014-12-28 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• libtool: Update bundled libtool to version 2.4.4.

• magick/constitute.c (WriteImage): Remove bogus use of GetBlobStatus() as a catch-all for write errors. Coders should be detecting write errors all by themselves.

2014-12-27 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• NEWS.txt: Updated with more improvements since previous release.

• coders/palm.c (WritePALMImage): Log header details.

• coders/pdb.c: PDB reader and writer need to be more robust when calculating packets and buffer allocation. Also log header details. Problem was reported by Hanno Böck.

2014-12-26 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• NEWS.txt: Updated with more improvements since previous release.

• ttf: Update bundled Freetype to 2.5.4.

• png: Update bundled libpng to 1.6.16.

2014-12-22 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• coders/tiff.c (ReadTIFFImage): The libtiff JBIG coder only supports strip images, and fails when scanlines are requested. Force use of stripped read method when the file uses JBIG compression. It is still not possible to write JBIG compressed TIFF files since there is not yet a strip writer. Problem reported by Yuriy Kaminskiyon via the GM-bugs mailing list on 2014-12-22.

2014-12-21 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• coders/tiff.c (QuantumTransferMode): Fix quantum transfer handling for photometrics which might deliver one or three samples per pixel. These were assuming that three samples were always provided.

2014-12-21 Glenn Randers-Pehrson <glennrp@simple.dallas.tx.us>

• coders/png.c: Impose a 10-million limit on dimensions when reading a PNG file.

2014-12-21 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• NEWS.txt: Updated with improvements since previous release.

2014-12-20 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• magick/statistics.c (GetImageStatistics): Failed to compute statistics for the Black channel of CMYK image files. Problem reported by Michael Below via Debian bug 773552: "graphicsmagick-imagemagick-compat: convert to cmyk leaves k channel empty".

2014-12-14 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• magick/delegate.c (InvokeDelegate): Windows spawnvp() splits arguments into more arguments. Add escaping to avoid the splitting. Resolves SourceForge bug #276 "dcraw 9.19 included with gm 1.3.20 doesn't support paths with spaces."

• magick/utility.c (TranslateTextEx): Fix regression added on 2014-12-13 (yesterday) which caused output file name passed to delegate programs to be wrong.

• magick/annotate.c (RenderFreetype): Fix regression added in 1.3.19 which caused spurious drawing errors to be produced while rendering with text when all of the text is off the left-hand side of the image.

2014-12-13 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• magick/command.c (CompareUsage): Options should be listed in alphabetical order.

• magick/annotate.c (RenderFreetype): Immediately quit processing and return an error if SyncImagePixels() reports a problem.

• coders/psd.c (ReadPSDImage): Return with an error right away if SetImageEx() (to create solid-color background canvas) reports a failure.

• magick/annotate.c (AnnotateImage): Document all of the attributes which are supported.

• magick/utility.c (TranslateTextEx): Assure that attributes requiring ImageInfo pointer are skipped. AnnotateImage() does not pass ImageInfo. Also document all of the attributes which are supported.

• doc/compare.imdoc: Compare documentation examples referred to non-existing option -algorithm rather than the existing option -highlight-style. Fixes SourceForge bug #286 "docs are wrong about -algorithm option of gm compare?".

• Magick++/lib/Magick++/Geometry.h (Magick): Re-implemented Magick++ Geometry to use bit-fields for booleans and used a union to reserve space for the future as well as to achieve the same size as in the previous release. Eliminated inline methods because they make it impossible to change the class internal design. ABI was broken already when limitPixels() and fillArea() methods were added on 2014-11-28. Inline method instantiations in already compiled applications will malfunction unless the dependent applications are re-compiled.

• magick/image.c (SetImageEx): Add a new version of SetImage() called SetImageEx() which reports exceptions to a provided exception parameter rather than into the image.

2014-12-01 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• magick/colormap.c (AllocateImageColormap): Refuse to allocate a colormap larger than MaxColormapSize.

• coders/psd.c (ReadPSDImage): Avoid extremely long execution time if the PSD colormap size is astonishingly large. Problem was reported by Hanno Böck.

2014-11-30 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• coders/dcm.c: Verify that DCM data is available before attempting to use it. Avoids a crash due to improper DCM header. Problem was reported by Hanno Böck. (DCM_ReadNonNativeImages): Fix array over-run (off by one error) while looking for end of multi-fragment frames.

2014-11-29 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• coders/sun.c: Thoroughly validate Sun Rasterfile headers and verify that there are no arithmetic overflows in buffer-size calculations. Problem was reported by Hanno Böck.

2014-11-28 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• Magick++/lib/Magick++/Geometry.h (Magick::Geometry): Add and document limitPixels() and fillArea() methods to support '@' and '^' geometry qualifiers. Fill area contributed by Long Ho and limitPixels() by Bob Friesenhahn.

• www/Magick++/Image.rst: Document extent and resize methods.

• Magick++/lib/STL.cpp (extentImage): New function object to invoke image extent method. Original implementation contributed by Long Ho. Subsequently modified by Bob Friesenhahn. (resizeImage): New function object to invoke image resize method. Contributed by Long Ho.

• Magick++/lib/Image.cpp (extent): New method to place image on sized canvas of constant color using gravity. Contributed by Long Ho. (resize): New method to resize image specifying geometry, filter, and blur. Original implementation contributed by Long Ho. Subsequently modified by Bob Friesenhahn.

2014-11-26 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• coders/avi.c: AVI support in GraphicsMagick is completely unusable and it could never compete with dedicated software like 'ffmpeg'. Removing AVI support until such time it can be supported properly.

• coders/viff.c: Add protections against buffer overflow by verifying that buffer size allocation calculations do not overflow. Also added header logging for read and write. Work performed due to complaint by Hanno Böck.

2014-11-24 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• magick/common.h (MAGICK_NO_SANITIZE_ADDRESS): Add MAGICK_NO_SANITIZE_ADDRESS macro definition for disabling clang/GCC address sanitizer on a function if the need arises.

2014-11-24 Glenn Randers-Pehrson <glennrp@simple.dallas.tx.us>

• coders/png.c (ReadPNGImage): Do not attempt to clean up a "previous" NULL PNG image.

2014-11-24 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• coders/xwd.c (ReadXWDImage): Add logging of XWD header values. Fix memory leaks in error reporting paths. Ping mode skips allocating memory for data and colormap. Added a few more header validation checks (not complete). XWD is put in UnstableCoderClass until such time as header validation checks are complete.

2014-11-22 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• coders/pdb.c (WritePDBImage): Use MagickAllocateArray() when allocating packets.

• coders/dpx.c (ReadDPXImage): Validate DPX header orientation and number of elements. Problem was reported by Hanno Böck.

2014-11-20 Glenn Randers-Pehrson <glennrp@simple.dallas.tx.us>

• coders/png.c (ReadJNGImage): Do not attempt to clean up a "previous" NULL JNG image.

2014-11-17 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• www/FAQ.rst: Add a FAQ entry regarding what 'identify' reports. Resolves SF issue #280 "Better documentation for spurious gm identify in Q8 compilation."

2014-11-16 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• magick/enhance.c (ModulateImage): ModulateImage() should produce a progress indication even if only the colormap is modified.

2014-11-13 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• coders/psd.c (ReadPSDImage): Patch by Cédric Demière to fix "Memory allocation failed" error when reading PSDs files which have no layers. Delivered via SF patch #41 "PSD : files without layers". Resolves SF bug #242 "Can not convert PSD to JPG or PNG (gm convert: Memory allocation failed)".

2014-11-12 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• coders/webp.c (WriteWEBPImage): WebP fix by Roman Hiestand to make WebP lossless format truely lossless.

• tests/rwblob.tap (check_types): Added a test for WebP lossless.

• tests/rwfile.tap: Added a test for WebP lossless.

• tests/rwblob.c: Added support for -define.

• tests/rwfile.c: Added support for -define.

2014-11-09 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• webp, VisualMagick/webp: Updated bundled WebP to 0.4.2 release.

2014-11-01 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• Magick++/tests/attributes.cpp: Add a simple test for Image::formatExpression().

• Magick++/lib/Image.cpp (formatExpression): Handle case where TranslateText() returns NULL. Problem was reported by Dirk Lemstra..

2014-10-30 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• Magick++/lib/Image.cpp (formatExpression): New method to format a string based on a format similar to command-line -format. Feature was requested by Dirk Lemstra.

• magick/blob.c (BlobReserveSize): Don't throw an exception if posix_fallocate() fails since it seems that it is not supported for all filesystem types, and is only intended for optimization.

• Magick++/lib/Image.cpp (resolutionUnits): Return resolution units from Image if available, else return the value from ImageInfo. Issue was reported by Dirk Lemstra.

2014-10-26 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• coders/pnm.c (ReadPNMImage): Validate PGM, PPM, and PAM header MaxValue parameter. Issue was reported by Hanno Böck.

• coders/pcx.c (ReadPCXImage): Fix for CVE-2014-8355, eliminate memory leaks in error paths, and add PCX header logging. Issue was reported by Hanno Böck.

2014-10-14 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• wand/wand_symbols.h (MagickSetImageGamma): Fix typo in wand/wand_symbols.h. Resolves SF bug #277.

2014-10-04 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• coders/tiff.c (TIFFIgnoreTags): Avoid warning about unused strtol() return value on Linux.

• magick/random-private.h ("C"): Move random inlined implementation bits to random-private.h, which is not installed, or used outside of the core C library.

2014-09-26 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• magick/annotate.c (AnnotateImage): An empty text string should not be treated as an error. Resolves Debian bug 759956.

2014-08-31 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• coders/tiff.c: Added a new define called tiff:ignore-tags that can be used to ignore tags in 'corrupted' files with unknown and invalid tags. Without this patch the file cannot be read and raises an error. Patch by Dirk Lemstra via SF patches #40.

• magick/type.c (ReadTypeConfigureFile): Support reading type configuration file from Windows resource. Patch by Dirk Lemstra via SF patches #32.

• Magick++/lib/Magick++/STL.h: Fixed code analysis warning in STL.h. Patch by Dirk Lemstra via SF patches #32.

• Magick++/lib/Magick++/Include.h: Autolink WebP in Visual Studio. Patch by Dirk Lemstra via SF patches #32.

2014-08-28 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• coders/psd.c (WritePSDImage): Fix small stack over-write if more than 99 layers are written to PSD format. Similar to CVE-2014-1947 for ImageMagick. Changed layer naming to use at least 4 digits. Issue was brought to our attention by Rex Dieter and change is mostly based on his patch.

2014-08-23 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• magick/enum_strings.c (StringToCompositeOperator): Support composite operator names similar to the major brand, without losing any compatibility with previous naming.

2014-08-23 Glenn Randers-Pehrson <glennrp@simple.dallas.tx.us>

• coders/png.c: Fixed handling of transparency when writing indexed PNG. Reference: SourceForge Bug tracker [bugs:#267] Transparency lost when converting from GIF to PNG.

2014-08-17 Jaroslav Fojtik <JaFojtik@seznam.cz>

• VisualMagickconfigureconfigure.cpp Remove webp when attempting to compile with Visual Studio 6.

2014-08-16 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• NEWS.txt: Update for 1.3.20 release.

• www/index.rst: Update for 1.3.20 release.

• version.sh: Update library versioning for next release.

2014-08-12 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• png: Updated libpng to 1.6.12 release.

• zlib: Updated zlib to 1.2.8 release.

2014-08-09 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• NEWS.txt: Updated NEWS file to document changes since previous release.

2014-08-09 Jaroslav Fojtik <JaFojtik@seznam.cz>

• coders/webp.c webp cannot be compiled when HasWEBP is not set.

2014-08-08 Glenn Randers-Pehrson <glennrp@simple.dallas.tx.us>

• coders/png.c: Eliminated palette and depth optimization (see https://sourceforge.net/p/graphicsmagick/feature-requests/35/).

2014-08-06 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• dcraw/dcraw.c: Fix dcraw build for x64 target when only WIN64 is defined (by also defining WIN32).

• VisualMagick/configure/configure.cpp (write_file): Fix problem with x64 project naming which caused object file disambiguation not to work for x64 target. Make line terminations consistent.

2014-08-03 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• VisualMagick: VisualMagick fixes by Dirk Lemstra to improve configure program so that it is possible to select QuantumDepth, OpenMP, and 64-bit build via configure dialog boxes as well as options on the command line. Also automatically detects and deals with similarly named files in subdirectories so that WebP support can now build successfully. Resolves SF patches 31, 33, 35, 37, and 38.

2014-07-27 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• magick/nt_base.c (NTResourceToBlob): Support loading mgk files as Windows resource from library if MagickLibName is defined. Patch contributed by Dirk Lemstra via SF patch #32. (NTGhostscriptDLL): For Microsoft Windows, add support for a MAGICK_GHOSTSCRIPT_PATH environment variable which specifies the path to Ghostscript. If this environment variable is defined, then the Windows registry is not used to find Ghostscript. Patch contributed by Dirk Lemstra via SF patch #39.

• magick/log.c: Added SetLogMethod() to allow an application/library to specify a function to be called for logging. Patch contributed by Dirk Lemstra.

2014-07-20 Glenn Randers-Pehrson <glennrp@simple.dallas.tx.us>

• coders/bmp.c: "opacity" read from a BMP3 is actually "alpha", so store q->opacity=MaxRGB-opacity instead of q->opacity=opacity. Reference: Bug tracker [bugs:#271] Blank result for BMP resize.

2014-07-20 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• webp, VisualMagick/webp: Integrate webp 0.4.0 into windows build. May require manual renaming of output object files in project files to build webp until VisualMagick configure is improved!

2014-07-19 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• magick/composite.c: fmin() and fmax() are defined by C'99 and not available everywhere, so add and use MagickFmin() and MagickFmax() to improve portability.

2014-07-11 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• Magick++/lib/Magick++/Image.h (Magick): Fix complilation errors caused by continued raw use of __attribute__.

2014-06-30 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• magick/composite.c: Fixes by Brendan Lane for color channel overflows in modified/new quantum operators. Fixes test suite results for Q32 build and makes LinearBurn and LinearDodge work correctly at all.

• wand/pixel_wand.c (PixelSetMagenta): Fix documentation. Resolves SourceForge bug #273 'Green Magenta' typo in docs.

2014-06-28 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• magick/composite.c: Composition improvements and additions contributed by Brendan Lane via SourceForge patch #34 "Most of the missing Photoshop separable compositing operations" (https://sourceforge.net/p/graphicsmagick/patches/34/). These composition operators were modified to include alpha in their computations: Difference, Darken, Lighten, HardLight, and these operators were added Overlay, Exclusion, ColorBurn, ColorDodge, SoftLight, LinearBurn, LinearDodge, LinearLight, VividLight, PinLight, HardMix.

2014-06-22 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• magick/composite.c (ScreenCompositePixels): Implementation of Screen composite contributed by Brendan Lane. SourceForge patch #30 "Missing Screen composite operation".

• wand/magick_compat.c: Re-worked Wand library implementation to depend directly on GraphicsMagick library functionality rather than using ImageMagick shim code from magick_compat.c and magick_compat.h. The magick_compat.c source module becomes "dead code", which remains only to support the existing ABI, and will be deleted at the next major ABI break point.

• magick/utility.c (MagickFormatString): New private function to format a string into a buffer with a specified size. Same as previously existing FormatString() except requires a length argument.

2014-06-15 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• wand/magick_compat.h: Use MAGICK_ATTRIBUTE definition from magick/common.h.

• magick/common.h (MAGICK_ATTRIBUTE): Don't undefine __attribute__ since this may be used by system or compiler headers. Define private macro instead. Resolves SourceForge bug #270 "Compile error with g++ -std=c++11".

2014-06-06 Glenn Randers-Pehrson <glennrp@simple.dallas.tx.us>

• coders/png.c (ReadOnePNGImage): Free png_pixels and quantum_scanline before error return. Use "png_error()" instead of "ThrowException2()" for errors occuring while decoding a PNG so proper cleanup will happen.

2014-06-03 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• coders/tiff.c (ReadTIFFImage): Make sure that libtiff warnings are promoted to errors for critical tags.

2014-06-02 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• coders/tiff.c (ReadTIFFImage): Be quite a lot more draconian when retrieving the baseline standard TIFF tags we need in order to avoid consuming uninitalized data later. An error with these tags will result in failure to read the image file.

2014-05-21 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• magick/operator.c: Decided that ThresholdBlackNegateQuantumOp and ThresholdWhiteNegateQuantumOp should set the result to white or black respectively rather than being based on subtraction.

2014-05-18 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• Makefile.am (AUTOMAKE_OPTIONS): Be ultra-pedantic with CPPFLAGS and include paths in order to assure that only required directories are supplied, and to avoid accidential collision with system header files.

2014-05-17 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• magick/operator.h ("C"): New quantum operators ThresholdBlackNegateQuantumOp and ThresholdWhiteNegateQuantumOp. These correspond to -operator "Threshold-Black-Negate" and "Threshold-White-Negate".

2014-05-11 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• magick/composite.c (MultiplyCompositePixels): Multiply composition now uses SVG interpretation of how alpha should be handled. No longer does a simple multiply of alpha channel. Behavior change. Patch contributed by Sara Shafaei.

• coders/msl.c (ProcessMSLScript): Deal with case where image_info->attributes is NULL.

2014-04-29 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• magick/utility.c (TranslateTextEx): Support additional format specifiers 'g', 'A', 'C', 'D', 'G', 'H', 'M', 'O', 'P', 'Q', 'T', 'U', 'W', 'X', and '@'. (GetMagickGeometry): Support '>' and '<' qualifiers with '@' qualifier to specify if image should be resized if larger or lesser than given area specification. Resolves SourceForge bug #216 ">" wont take effect when use @ to specify the maximum area.

• magick/transform.c (GetImageMosaicDimensions): Move mosaic dimensions code to a static function for possible future re-use.

2014-04-23 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• magick/gradient.c (GradientImage): Update image is_grayscale and is_monochrome flags based on gradient color properties.

2014-04-20 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• magick/utility.c (GetMagickGeometry): Deal with resize geometry missing width or height (e.g. '640x' or 'x480') by substituting the missing value with one which preserves the image aspect ratio. This has been documented to be supported since almost the dawn of GraphicsMagick but was not actually supported until now.

2014-04-19 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• doc/options.imdoc: Document WebP encoder options.

• coders/webp.c (WriteWEBPImage): Support all of the WebP encoder options via -define arguments. Most of this work is contributed by Roman Hiestand.

• configure.ac: User-provided LIBS should be prepended to LIBS that configure script produces so that user option takes precedence.

2014-04-12 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• PerlMagick/Magick.xs: Added support for HardLight composition operator.

• www/perl.rst: Update PerlMagick documentation, including the composition operators.

• coders/xcf.c (GIMPBlendModeToCompositeOperator): Use new HardLight composition operator to support XCF GIMP_HARDLIGHT_MODE blend mode. Contributed by Sara Shafaei.

• coders/psd.c (CompositeOperatorToPSDBlendMode): Use new HardLight composition operator to support PSD "hLit" blend mode. Contributed by Sara Shafaei.

• wand/magick_wand.c (MagickOperatorImageChannel): New function to apply an operator to an image channel. Contributed by Sara Shafaei.

• magick/composite.c (HardLightCompositePixels): New HardLight composition operator. Contributed by Sara Shafaei.

2014-04-09 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• magick/command.c (BenchmarkImageCommand): Add a CSV title line and quoting to benchmark -rawcsv output.

2014-04-05 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• coders/webp.c: Add progress indication support to WebP writer.

• magick/command.c (VersionCommand): WebP support is included in -version output.

• coders/webp.c: WebP coder identifies library version and header ABI versions. Improve WebP error reporting.

2014-04-02 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• coders/tiff.c (WriteTIFFImage): Allow specifying the TIFF image software tag. In the special case that the string length is zero (e.g. -set software '') then the tag is skipped entirely. This is to support SourceForge feature request #37 "Option to prevent addition of Exif Software tag" opened by Jean-Louis Grall. Please note that this tag is not an EXIF tag.

• magick/command.c: composite, convert, display, mogrify, and import now support +set to remove an existing image attribute.

2014-03-16 Glenn Randers-Pehrson <glennrp@simple.dallas.tx.us>

• coders/png.c: Don't block threads when PNG_SETJMP_SUPPORTED is not enabled.

• coders/png.c: Changed prefix of macros defined in coders/png.c from PNG_ to GMPNG_. PNG_ is reserved for macros defined by libpng.

2014-03-16 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• magick/blob.c: Don't use setvbuf() to set stdio block size if filesystem block size is zero (e.g. MAGICK_IOBUF_SIZE=0)

2014-03-12 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• tests/{rwblob.tap, rwfile.tap}: Added tests for WEBP.

• tests/{rwblob.c, rwfile.c}: Add lossy hint for WEBP.

• coders/webp.c (WriteWEBPImage): Fix inverted return status. Added a tiny bit of logging.

2014-03-09 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• ttf: Updated FreeType to release 2.5.3 of March 6, 2014. Provides security fixes for CVE-2014-2240.

• jpeg: Update to libjpeg 9a of 19-Jan-2014.

• png: Update to Libpng 1.6.10 - March 6, 2014.

2014-03-06 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• magick/nt_base.c (NTResourceToBlob): According to Microsoft Report article 193678 (http://support.microsoft.com/kb/193678), FreeResource() is not needed in WIN32 and performs no useful function. Remove use of it. Also remove use of UnlockResource() which is similarly unuseful for WIN32.

• configure.ac (MAGICK_LIBRARY_REVISION): Test for Windows _aligned_malloc() is not reliable. Use Windows CRT version to decide if it is available.

2014-03-05 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• magick/studio.h: Make sure that Windows _aligned_malloc() is not used under MinGW unless the CRT version allows it.

2014-02-26 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• magick/pixel_cache.c (InterpolateViewColor): Applied patch by Troy Patteson plus fixes to ignore opacity channel if image matte is false. Replaces most of the code rewritten on 2014-02-16 and which produced a faint darkened border. The results look stellar now.

2014-02-24 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• magick/shear.c: Applied patch by Troy Patteson to improve non-integral rotation by around 40% by minimizing added image borders. This may cause small differences in results for some images.

• reference/filter/Rotate10.miff: Update rotate 10 degrees reference image so that PerlMagick test passes.

• magick/shear.c: Applied patch by Troy Patteson to fix SourceForge issue #260 "Rotation exhibits clipping/shearing errors for short wide images at some angles".

2014-02-22 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• doc/options.imdoc: Fix documentation to note that 'unspecified alpha' is the GraphicsMagick default when writing TIFF rather than 'associated alpha'. Much thanks to Mats Peterson for alerting us of this error.

2014-02-16 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• magick/pixel_cache.c (InterpolateViewColor): Added a hack so that affine transformations and displace composite do not have background colored fringing on the transferred image edges when the background is completely transparent. Fringing problem was caused by one or more of the line ends being a transparent pixel outside of the bounds of the original image content. May not be the final solution.

2014-02-14 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• magick/semaphore.c (AcquireSemaphoreInfo): Document that this function was deprecated. (LiberateSemaphoreInfo): Document that this function was deprecated.

2014-02-11 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• coders/psd.c (RegisterPSDImage): Set PSD to UnstableCoderClass since its implementation is currently rather marginal. It may even be that this coder deserves to be marked with the new BrokenCoderClass. We are still looking for a volunteer to iron out the wrinkles in the PSD reader.

• magick/magick.h (CoderClass): Added BrokenCoderClass to mark coders which often malfunction or are not very useful in their current condition. Sometimes there is still hope that problems will be resolved and so the source file is not outright deleted. This setting allows us to mark and use coders which might malfunction by defining MAGICK_CODER_STABILITY=BROKEN in the environment while not causing danger for normal use.

2014-02-09 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• wand/magick_wand.c: Documentation improvements for MagickSetInterlaceScheme() and MagickSetImageInterlaceScheme(). Resolves SourceForge bug #262 "setImageInterlaceScheme doesn't make image progressive".

2014-02-06 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• coders/{ps.c, ps2.c, ps3.c, pdf.c}: Only use resolution from image or -density if units was properly specified. Without units, resolution is worthless.

• coders/ps3.c (WritePS3Image): Use image resolution similar to PDF changes.

• coders/ps2.c (WritePS2Image): Use image resolution similar to PDF changes.

• coders/ps.c (WritePSImage): Use image resolution similar to PDF changes.

• coders/pdf.c (WritePDFImage): Use resolution from image if it appears to be valid. Resolves SourceForge issue #261 "PNG Pixel Density Not Preserved Converting to PDF".

• magick/enum_strings.c (StringToResolutionType): New function to convert ResolutionType to C string. (ResolutionTypeToString): New function to convert from C string to ResolutionType.

2014-02-01 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• wand/magick_wand.c (MagickGetImageGeometry): New function to get the image geometry string. This function and the three others in this change set are contributed by Sara Shafaei. (MagickGetImageMatte): New function to read the image matte (opacity) channel enable flag. (MagickSetImageGeometry): New function to set the image geometry string. (MagickSetImageMatte): New function to set the image matte (opacity) channel enable flag.

2014-01-31 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• wand/magick_wand.c (MagickDrawImage): Remove development debug fprintf which causes each drawing primitive to be printed to stderr.

2014-01-21 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• coders/pnm.c (ReadPNMImage): Fix scaling of alpha in sub-ranged pixels. Addresses SourceForge issue #237 "Incorrect MAXVAL scaling when reading PAM images", which was not fully fixed in by the previous attempt.

2014-01-19 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• magick/tsd.c: Implement TSD for "pure" OpenMP mode without relying on POSIX or WIN32 TSD APIs.

• magick/semaphore.c: Implement OpenMP-based locking so that code can compile in a "pure" OpenMP mode without relying on POSIX or WIN32 locking APIs.

• configure.ac: --without-threads no longer disables use of OpenMP. Use the already existing option --disable-openmp to disable OpenMP.

2014-01-12 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• magick/common.h: Support use of clang/llvm __attribute__ and __builtin extensions similar to the existing support for GCC.

2014-01-05 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• Magick++/lib/Image.cpp (thumbnail): New method for fast image resizing, particularly to make thumbnails.

• coders/gif.c: Log when Netscape loop exension is read and written.

• coders/png.c (WriteOnePNGImage): In optimize mode, disable matte channel immediately if there are no non-opaque pixels. Also added some useful logging. Resolves SourceForge issue #252 "convert an 8bit PNG result in a corrupted image ".

• wand/magick_wand.c (MagickSetImageGravity): New Wand method to set image gravity. (MagickGetImageGravity): New wand method to get image gravity.

2014-01-02 Glenn Randers-Pehrson <glennrp@simple.dallas.tx.us>

• coders/png.c (ReadOnePNGImage): Use libpng function png_set_strip_16_to_8() when scaling 16-bit input PNG down to 8-bit in a Q8 build. The png_set_scale_16_to_8() function is more accurate, but the slight difference causes reference tests to fail and causes unexpected difference between the behavior of PNG and other formats. If png_set_strip_16_to_8() is not supported in libpng, then we use png_set_scale_16_to_8() if that is available.

2014-01-01 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

• INSTALL-windows.txt: Update for 2014.

• INSTALL-unix.txt: Update for 2014.

• Copyright.txt: Update for 2014.

• NEWS.txt: Update for 2014.

• README.txt: Update for 2014.

• doc: Update for 2014.

• www: Update for 2014.

• VisualMagick/installer: Update for 2014.

• ChangeLog: Rotate Changelog to ChangeLog.2013 for 2014.