Imager release history. Older releases can be found in Changes.old
+General changes:
+
+ - to_paletted() and make_palette() now fail (with an error in
+ errstr()) if invalid quantization parameters are supplied.
+
+ - map() would corrupt a channel if there was a gap in the arrayref of
+ channels. Detected by Coverity. CID 185300.
+
+Coverity finally finished a build[1], fix a few problems:
+
+High severity:
+
+ - reading a color-mapped TGA file with an id string would cause a
+ double-free if the palette was truncated. CID 185317.
+
+ - mixing scaling to sizes where the accumulator row, the working
+ output row or the working input row didn't fit into the address
+ space could result in memory leaks. This can probably only be
+ reproduced on very wide floating-point sample images. CID 185318.
+
+ - convert an array style function parameter pointer to pointer style
+ to prevent confusing Coverity in the T1 bounding box implementation.
+ CID 185343.
+
+ - Similarly in the FT1 bounding box implementation. CID 185338.
+
+ - Similarly for the i_tt_rasterize() function in the FT1
+ implementation. CID 185303.
+
+ - initialize a pointer to prevent Coverity complaining in polygon
+ drawing (it should always end up being set.) CID 185341.
+
+ - addi style makemap could potentially read one past the end of an
+ array. CID 185337.
+
+ - supplying a numeric hatch of 32 to Imager::Fill->new(hatch => ...)
+ would result in read beyond the end of the built-in hatch array.
+ Negative values (which Coverity didn't complain about) could also
+ cause problems. CID 185331.
+
+ - the Imager::Color set_internal() interal method no longer
+ calls the over-complicated ICL_set_internal() (which is retained
+ only for the old API.) Coverity complained that this leaked, but
+ this could only occur with an invalid (NULL pointer) color object.
+ CID 185323.
+
+ - the underlying implementation of the map() method could read before
+ the beginning on an allocated array if supplied with inconsistent
+ parameters, which Coverity complained about. No Imager code calls
+ that function with inconsistent parameters, but a
+ belt-and-suspenders check was added. CID 185315.
+
+ - Coverity complained a call to i_getcolors(), used by the
+ implementation of the is_bilevel() method could leave the fetched
+ colors uninitialized. Added a return value check. CID 185308.
+
+ - a numeric combining mode of 13 (eg. as a parameter to
+ Imager::Fill->new())could cause an invalid array read in
+ i_get_combine() due to a fencepost error in validating the combine
+ number. CID 185299.
+
+Lower severity (according to Coverity):
+
+ - avoid an unneeded EXTEND() call when the FT1 has_chars()
+ implementation returns 0. CID 185350.
+
+ - avoid accessing a possibly NULL map from MakeMapObject() in a
+ logging call. (GIF) CID 185296.
+
+ - gradgen() allocated the wrong amount of space (always too much) for
+ the color array. CID 185291.
+
+ - avoid dead code in i_tt_glyph_names(). CID 185321.
+
+ - avoid dead code in i_get_anonymous_color_histo(), which is the
+ implementation of getcolorusage(). CID 185327.
+
+ - avoid dead code in i_ft2_glyph_name(), which is the implementation
+ of glyph_names() for FT2. CID 185342.
+
+ - avoid dead code in i_t1_glyph_names(), which is the implementation
+ of glyph_names() for T1. CID 185322.
+
+ - avoid an unneeded EXTEND() call when the FT2 has_chars()
+ implementation returns 0. CID 185292.
+
+ - the unpack code for ICO/CUR file handling could extend 32-bit
+ unsigned values to 64-bit signed. I believe this is harmless. CID
+ 185319.
+
+ - remove an unneeded check when terminating the stream for JPEG
+ writing. CID 185347.
+
+ - skip an unneeded check when freeing the combine temp buffer in the
+ fountain filter. CID 185286.
+
+ - check the combine function pointer consistently rather than the
+ combine code in one place in the fountain filter.
+
+ - error diffusion now validates a custom error diffusion map and reports
+ an error if it's bad. CID 185288.
+
+ - avoid discarding the value of i_io_getc() when scanning numbers in
+ pnm.c. CID 185293.
+
+ - handle failure to clone the log filehandle when cloning the Imager
+ context object on thread creation. CID 185294.
+
+ - fix an unsigned comparison when converting character code to a
+ glyph index with a NULL character map when calculating the glyph
+ for display for FT1. This should be rare. CID 185297.
+
+ - fix a similar bug when calculating whether a glyph is present for
+ has_chars() for FT1. CID 185302.
+
+ - i_img_info() (C API) no longer tries to handle a NULL image object
+ pointer. CID 185298.
+
+ - re-work testing for size_t overflow for circle/random
+ super-sampling for fountain fills. CID 185304.
+
+ - don't check if the unsigned size passed to Imager's malloc wrapper
+ (mymalloc) is negative. Left from when that parameter was signed.
+ CID 185305.
+
+ - make some types larger and add a cast to prevent integer overflows
+ when calculating a palette with median cut for extraordinarily
+ large images. CID 185306.
+
+[1] The first two build submissions ended up at the end of a ~400
+build queue, and seemed to have been cancelled by Coverity. A build
+submitted on NYE went through in minutes.
+
+Imager 1.008 - 31 Dec 2018
+============
+
+ - moved EXIF handling from Imager::File::JPEG to core Imager
+ This allows file formats that store EXIF data as blobs similarly
+ to JPEG to re-use this code. (such as Imager::File::WEBP)
+
+ - added some more file extensions to image file type mappings
+
+ - added add_type_extensions() class method
+
+Imager 1.007 - 24 Nov 2018
+============
+
+ - add png_compression_level tag for writing PNG files.
+
+ - avoid flooring a second time in matrix transform interpolation.
+ https://rt.cpan.org/Ticket/Display.html?id=124001
+
+ - produce v2 metadata.
+ Includes change from the ticket and updates to sub-modules.
+ https://rt.cpan.org/Ticket/Display.html?id=127216
+
+ - improve error reporting for the polygon() method
+
+Imager 1.006 - 26 Aug 2017
+============
+
+ - the internal i_errors() function now correctly allocates the stack
+ space needed for its result.
+ https://rt.perl.org/rt3/Ticket/Display.html?id=131938
+
+ - t/100-base/020-color.t now uses Imager::Test's test functions
+ instead of its own.
+ https://rt.cpan.org/Ticket/Display.html?id=111993
+
+ - write_multi() now returns an error result (a false value) if called
+ with a non-(Imager image object). Previously it would typically
+ crash.
+ https://rt.cpan.org/Ticket/Display.html?id=117878
+
+ - improve the documentation of the jpegquality parameter when
+ writing JPEG files.
+
+ - add code to mitigate CVE-2016-1238, Imager will no longer search the
+ default current directory entry in @INC when searching for file
+ format support modules.
+
+Imager 1.005 - 16 Apr 2016
+============
+
+It's now been ten years since I switched to the new Changes file in
+release 0.55.
+
+ - revert the ivdformat probes, they don't work as is and trying to
+ fix them is too much work for now.
+
+Imager 1.004_004 - 15 Apr 2016
+================
+
+ - test that the ivdformat from Config is correct and look for a valid
+ one if it isn't.
+ For the strange Win32 failures.
+
+ - fix a copy and paste error in pod in samples/samp-form.cgi
+
+Imager 1.004_003 - 23 Mar 2016
+================
+
+ - add some extra error reporting to the I/O layers tests, this might
+ help catch a failure seen on Win32.
+ http://cpantesters.org/cpan/report/99781689-6bf5-1014-897a-75cb4eee1325
+
+Imager 1.004_002 - 20 Mar 2016
+================
+
+ - don't use the seek() method on opened() handles in
+ t/200-file/400-basic.t. In older versions of perl such handles are
+ only IO::Handle objects, not IO::File, and don't have a seek()
+ method.
+
+Imager 1.004_001 - 16 Mar 2016 (Birthday release - but not my birthday)
+================
+
+ - re-work the t/200-file/400-basic.t to correctly handle failures
+ It's custom ok() function didn't have a prototype and didn't use scalar().
+ This caused ok() to use the note instead of the value being tested when
+ the method called returned an empty list. For an example of the problem
+ caused see: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=812093
+
+ - remove some noise from when Imager tried to work with bugs in old
+ versions of giflib. I can't do much about the new bugs.
+
+ - the new autolevels filter (Imager 0.99) used an integer for the
+ sample scaling factor which caused the top output level to be too
+ low (depending on the scaling required.) It now uses a double.
+ https://rt.cpan.org/Ticket/Display.html?id=111871
+
+ - the new autolevels filter had off-by-one errors calculating the
+ minimum and maximum luminance from the histogram. This slightly
+ reduced the contrast of the output image.
+ https://rt.cpan.org/Ticket/Display.html?id=111871
+
+ - the new autolevels filter now uses a lookup table for 8-bit images
+ to avoid a floating point multiply for each sample.
+ https://rt.cpan.org/Ticket/Display.html?id=111871
+
+ - fixed several memory leaks detected by valgrind:
+
+ - addcolors() leaked the temporary array of colors supplied to the
+ internal API
+
+ - make_palette() leaked the temporary image array (not the images
+ themselves) passed to the internal API.
+
+ - combine()/i_combine() leaked its working row buffers
+
+ - getcolorusage()/i_get_anonymous_color_histo() leaked the sample
+ buffer if there were too many colors
+
+ - getcolorcount()/i_count_colors() leaked the sample buffer if
+ there were too many colors.
+
+ - the nearest_color filter (undocumented until I find a use for it)
+ leaked both temporaries passed to the API and internal buffers
+
+ - the internal process of upgrading a paletted image to a direct
+ color image would leak a context object reference count.
+
+ - a write failure when writing to a GIF file could leak memory.
+
+ - failing to write to a 1-bit/pixel ICO image could leak memory.
+
+ - Imager no longer deliberately leaks the context object from the
+ initial thread. This was done to ensure there was always a context
+ object available, but the code that needed that now handles the
+ lack correctly,
+
+ - fixed some uninitialized memory usage detected by valgrind:
+
+ - rotate()/i_rotate_exact()/i_rotate_exact_bg()/i_matrix_transform()/
+ i_matrix_transform_bg() didn't initialize a working color value
+ if there was zero pixel coverage.
+
+ - i_ft2_cp() didn't initialize the complete color when producing an
+ intermediate image. This caused uninitialized value usage when
+ logging the color.
+
+Imager 1.004 - 8 Nov 2015
+============
+
+ - Imager::Color::Table is now pre-loaded by the preload() method.
+ https://rt.cpan.org/Ticket/Display.html?id=104896
+
+ - fix an assertion triggered under perl 5.23.4.
+ Thanks to A. Sinan Unur for the report and the patch.
+
+ - Imager->new can now be used to read raw image files.
+ https://rt.cpan.org/Ticket/Display.html?id=106836
+ Thanks to Richard Kelsch for reporting this.
+
+ - deal with output changes from Pod::Spell
+ https://github.com/perl-pod/Pod-Spell/issues/21
+
+Imager 1.003 - 12 May 2015
+============
+
+ - update 1.002 release notes to include the center change for filled
+ circle drawing.
+
+ - flood_fill() would escape beyond a 4-connected space under some
+ circumstances.
+ Added many more flood_fill() tests.
+ https://rt.cpan.org/Ticket/Display.html?id=103786
+
+Imager 1.002 - 3 Apr 2015
+============
+
+ - drawing anti-aliased filled circles is now 10 to 50 times faster
+ depending on the size of the circle.
+ This also changed the center from being the center of the pixel to
+ being the top left of the pixel to match the filled arcs drawn by
+ arc().
+ https://rt.cpan.org/Ticket/Display.html?id=101682
+
+ - enhancements to polygon filling:
+
+ - added a mode parameter to control how overlapping regions behave
+
+ - added a polypolygon() method to fill more than one polygon at a
+ time
+
+ - polygon filling is now exposed through the API.
+
+ - added colormodel(), alphachannel() and colorchannels() methods.
+ These were added for two reasons:
+
+ - a future version of Imager may allow the number of channels in
+ an image to not directly represent the color model of an image.
+ eg. a greyscale TIFF image with multiple alpha channels.
+
+ - a future version of Imager may allow an image to be read without
+ translation, for example a TIFF file that contains measurements
+ from an instrument. Currently Imager transforms the samples into
+ the range 0.0 ... 1.0 which may means the user has to translate
+ the value back.
+
+ An untranslated image would be unusable as image data, so
+ colormodel() would return "unknown" in this case.
+
+ Similarly a CMYK image might be returned as an "unknown" color
+ model image, if the caller chooses to disable translation to
+ RGB.
+
+Imager 1.001 - 2 Jan 2015
+============
+
+ - both Imager and perl 5.21.3 define my_strerror(), prevent a conflict
+ Thanks to Slaven Rezic for the report and the patch.
+ https://rt.cpan.org/Public/Bug/Display.html?id=98234
+
+ - GIF: clean-up a test file if the test for the giflib 4.2.0 file
+ version bug fails.
+
+ - fix Imager::Matrix2d::rotate()'s centre point handling
+ https://rt.cpan.org/Public/Bug/Display.html?id=99959
+
+ - ICO: don't apply the icon mask to images with an alpha channel by
+ default
+ https://rt.cpan.org/Public/Bug/Display.html?id=99507
+
+ - make verbose probing output more verbose
+
+ - use Imager::Probe to probe for freetype 1.x
+ https://rt.cpan.org/Ticket/Display.html?id=100502
+
+ - The --enable and --disable parameters to the top-level Makefile.PL
+ work again.
+
+ - update the bundled/modified Devel::CheckLib to handle the gcc-4
+ symlink on Cygwin
+
+Imager 1.000 - 28 Jul 2014
+============
+
+There's nothing special about Imager 1.000, it's just another release.
+
+ - fix the skip check for the iolayer qr// buffer test
+
+ - improve error reporting for the iolayer test failing on a small
+ number of Win32 CPAN testers
+
+Imager 0.99_02 - 21 Jul 2014
+==============
+
- Imager::Filter::Mandelbrot (and dynfilt/mandelbrot.c) - initialize
the blue channel in the generated palette, and allow each color
component to be in the range 100..255 instead of just 100..254.
This caused problems with older perls and didn't provide much of a
performance improvement.
+ - support Inline 0.57 and later.
+ Inline 0.57 changed the "with" interface.
+ https://rt.cpan.org/Ticket/Display.html?id=97108
+
+ - don't define our own MAXINT macro, it conflicts with windows header
+ files and in a few places it was the wrong value to use anyway.
+ https://rt.cpan.org/Ticket/Display.html?id=96425
+
Imager 0.99_01 - 29 Jun 2014
==============
- avoid static variables when capturing IPTC data from JPEG files
- - match Imager::Font;:T1's error message translations to those from
+ - match Imager::Font::T1's error message translations to those from
later versions of T1Lib.
- for libtiff versions that support extended warning handlers (3.8.0
projects / imager.git / blobdiff