Imager release history. Older releases can be found in Changes.old Imager 0.65 - unreleased =========== Bug fixes: - In some cases when an error occurs reading those parts of a JPEG file after the image the scan-line buffer could be freed a second time. In cases where the the error occured while reading the image data it's possible that the buffer could have leaked. Thanks to Gabriel Vasseur for reporting this and help in tracking it down. - the gif_screen_height tag was overriding the screen width and being ignored for the screen height when present. https://rt.cpan.org/Public/Bug/Display.html?id=35568 Imager 0.64 - 23 April 2008 =========== This is a bug fix release. This includes a fix for a possible security issue. Bug fixes: - Possible security issue: The floating point sample path for image based fills had a buffer overflow. This would overwrite the end of a malloc()ed buffer with double precision floats. http://rt.cpan.org/Ticket/Display.html?id=35324 CVE-2008-1928 - check that the result of fileno($fh) is defined rather than simply true when read() or write() is supplied with an fh parameter. http://rt.cpan.org/Ticket/Display.html?id=35139 - i_scale_axis() wasn't checking the result of i_img_new_ch() resulting in a SIGSEGV when attempting to scale an image to a size too large to fit in memory. This is a NULL pointer access issue, not a buffer overflow. Added a check for the failure. scale_calculate() (and hence scale()) will now fail if any of the scale size parameters are a reference. http://rt.cpan.org/Ticket/Display.html?id=35172 - Regression: filling a greyscale image with a hatch used the wrong color channels from the supplied fg/bg colors. https://rt.cpan.org/Ticket/Display.html?id=35278 - fixed a related problem for image fills. Imager 0.63 - 7 April 2008 =========== This release primarily contains changes to improve ease of use - rather than you having to convert images to the appropriate number of channels, Imager handles it internally. How to handle drawing colors and the default combine mode is a thornier problem left for some other release. - the font libraries are now only initialized when needed. http://rt.cpan.org/Ticket/Display.html?id=28825 - moved the imtoc.perl code into Imager::Preprocess - paste() and rubthrough() now adapt the source image data to the destination, so you can now safely paste/rubthrough from greyscale images to color images or back, or from alpha channel images to noalpha channels or back. https://rt.cpan.org/Ticket/Display.html?id=30908 - rubthrough() now falls back to pasting when the source doesn't have an alpha channel. This effectively treats the source as having a max alpha channel, the right thing to do. http://rt.cpan.org/Ticket/Display.html?id=29944 - re-worked most of the area filling code to use a common set of functions when filling. Corrected normal combine mode. Rewrote most of the combine modes to match the way the SVG draft defines them with respect to a translucent source and destination. Added tests for translucent source and destination. Added tests to check 8-bit/sample and double/sample combines work similarly. https://rt.cpan.org/Ticket/Display.html?id=29879 - writing a 2 or 4 channel image to a JPEG file will now write that image as if composited against a background, black by default, overridable with the i_background tag/parameter. https://rt.cpan.org/Ticket/Display.html?id=29876 - writing a 2 or 4 channel image to a PGM/PPM file will now write that image as if composited against a background, black by default, overridable with the i_background tag/parameter. http://rt.cpan.org/Ticket/Display.html?id=30074 - writing a 2 or 4 channel image to a BMP file will now write that image as if composited against a background, black by default, overridable with the i_background tag/parameter. http://rt.cpan.org/Ticket/Display.html?id=30075 Bug fixes: - Imager::Matrix2d->translate() now only requires one of the x or y parameters. http://rt.cpan.org/Ticket/Display.html?id=29937 - mixing qtype scaling now sets all channels of a pixel to zero if the pixel has zero coverage (zero alpha). This should produce more compressible output files. http://rt.cpan.org/Ticket/Display.html?id=32324 - removed the pointless #! line from lib/Imager/Font/Wrap.pm Noticed when I saw: https://bugzilla.redhat.com/show_bug.cgi?id=166254 I'm not changing the #! lines of the sample code, since it's sample code, not intended for installation. http://rt.cpan.org/Ticket/Display.html?id=33408 - some TGA images weren't being detected correctly as TGA images https://rt.cpan.org/Ticket/Display.html?id=32925 - handling of the left-over bit for 16-bit/pixel TGA images has been changed to match the behaviour of the GIMP. Previously the bit being set was treated as an opaque pixel, but one user reported a problem with loading such an image. I haven't been able to find any tools beyond the GIMP that handle alpha-channel 16-bit TGAs, so I'll match it's behaviour. See issue 114913 in the GIMP's bugzilla. http://rt.cpan.org/Ticket/Display.html?id=32926 Imager 0.62 - 10 December 2007 =========== - Makefile.PL now expands ~/path supplied to --incpath or --libpath to /path under your home directory. http://rt.cpan.org/Ticket/Display.html?id=29484 - the old dynaload code used Mach API functions to load dynamic libraries on Mac OS X. These APIs have been deprecated in OS X 10.5 and were causing some build problems. So henceforth Imager uses the dlopen() family of functions, and you will need version 10.3 or later of OS X. - added the det() function to the transform2() engine. added the sample quad_to_square.pl Courtesy Richard Fairhurst. http://rt.cpan.org/Ticket/Display.html?id=31244 Bug fixes: - samples/gifscale.pl sourced the base value for gif_top from gif_left. Thanks to Eleneldil G. Arilou for pointing this out. - t/t82inline.t no longer loads B at runtime, to work around a bug in some 5.005_0[45] installations. http://rt.cpan.org/Ticket/Display.html?id=30508 - work around Module::Depends::Intrusive bug #21229 http://rt.cpan.org/Ticket/Display.html?id=30520 - the hardinvert filter no-longer inverts the alpha channel. http://rt.cpan.org/Ticket/Display.html?id=30002 - the hardinvert filter now supports large samples Imager 0.61_02 - 28 November 2007 ============== - major TIFF support re-work http://rt.cpan.org/Ticket/Display.html?id=20329 - added a C level image interface for accessing samples from 1-32 bits, exposed this at the perl level in getsamples() - the conv filter now works at floating point precision for high bit images - added is_bilevel method to test whether an image should be written as a bilevel image if the image format supports it. - added -log-stderr as an Imager import list option - added some important types to Imager::APIRef - added test_image_double() to Imager::Test Bug fixes: - Imager::Fountain couldn't read GIMP gradient files with 10 or more segments - the scale() method with qtype mixing now handles images with an alpha channel correctly. - fixed a broken link from the "animated GIF" entry in the concept index. Thanks to Slaven Rezic. http://rt.cpan.org/Ticket/Display.html?id=30889 - on some perl's the infix expression parser test would fail due to actions in the grammar returning false. Made sure all actions return a true value. Thanks to Richard Fairhurst for spending a lot of time in tracking down this problem. http://rt.cpan.org/Public/Bug/Display.html?id=29562 Imager 0.61 - 5 November 2007 =========== - added samples/gifscale.pl, which adjusts the screen size/position tags when scaling an animated gif http://rt.cpan.org/Ticket/Display.html?id=27591 Bug fixes: - correct handling of sz in matrix_transform() - this should allow perspective type transformations to work now. http://rt.cpan.org/Ticket/Display.html?id=29936 - prevent a cast to integer warning on x64 builds in datatypes.c also fixed some other type warnings https://rt.cpan.org/Ticket/Display.html?id=30204 - some sub-directory tests depended on files produced by the parent directory tests http://rt.cpan.org/Ticket/Display.html?id=30203 - Imager::Font::Wrap doesn't correctly set savepos thanks to Nikita Dedik and Eleneldil G. Arilou for reporting this. http://rt.cpan.org/Ticket/Display.html?id=29771 - test 171 in t/t01introvert.t was failing on perls configured to use long double. http://rt.cpan.org/Ticket/Display.html?id=29413 - the code for the transform2() uminus operator was missing a break. Added tests for better code coverage of the ops. http://rt.cpan.org/Ticket/Display.html?id=29296 - the SGI RLE compression code could overflow its compression buffer http://rt.cpan.org/Ticket/Display.html?id=30334 - the 32-bit output function used by the SGI code only handled values under 0x10000. This was most noticable when writing large RLE images. http://rt.cpan.org/Ticket/Display.html?id=30335 - validate chan_count for chans == NULL for each of the i_gsamp() implementations. http://rt.cpan.org/Ticket/Display.html?id=28985 - attempt to work around the test failure at http://www.nntp.perl.org/group/perl.cpan.testers/2007/09/msg650810.html http://rt.cpan.org/Ticket/Display.html?id=29562 - improve the error messages produced when attempting to read or write an unknown image file format. http://rt.cpan.org/Ticket/Display.html?id=30103 - improve the transform2() documentation http://rt.cpan.org/Ticket/Display.html?id=29267 - correctly generate the author key in META.yml http://rt.cpan.org/Ticket/Display.html?id=30377 - correctly blend a rotated (or matrix_transformed()) image when performing interpolation in the presence of an alpha channel. Also corrected the centring of the rotated image on the output image. Imager 0.60 - 30 August 2007 =========== - Finished/rewrote Arnar's old SGI RGB file format support, so Imager now has full SGI RGB image format, including RLE and 16-bit/sample images. https://rt.cpan.org/Ticket/Display.html?id=8666 - logging functions are now available in the API - applied Gabriel Vasseur's patch added documentation, further tests, and support for greyscale images Obviously problems are my fault :) https://rt.cpan.org/Ticket/Display.html?id=28142 - the mask for ICO/CUR images is now applied as an alpha channel to the returned image. For the old behaviour, supply ico_masked => 0 to read() or read_multi(). This should be less confusing when using Imager as a general image processor. https://rt.cpan.org/Ticket/Display.html?id=29001 Bug fixes: - in some cases it's possible for giflib/libungif to return color indexes outside the range of colors defined by the image's palette. We now expand the palette to match the indexes used. Thanks to Gabriel Vasseur for reporting this. - fixed various memory leaks that could occur when failing to read png, jpeg, bmp or tga files. - to avoid confusion, channels not present in the image are returned as zero by getscanline(). This has no effect on the C level i_glin() and i_glinf() API functions which continue to not set the unused channels. - the convert() method now returns an image of the same sample size as the source image. https://rt.cpan.org/Ticket/Display.html?id=28492 - remove repeated text in Imager::Files http://rt.cpan.org/Ticket/Display.html?id=27589 - be even more explicit that scale() and friends don't modify the source image, but return a new image. http://rt.cpan.org/Ticket/Display.html?id=28570 - improve the error message from errstr() when you try to load a font for which the driver hasn't been built in Imager. http://rt.cpan.org/Ticket/Display.html?id=27571 - transparency is now enabled by default when writing GIF images http://rt.cpan.org/Ticket/Display.html?id=27615 - Imager would not load on Windows 98 http://rt.cpan.org/Ticket/Display.html?id=27653 Imager 0.59 - 14 June 2007 =========== Bug fixes: - fixes a regression introduced by the fixes for RT 11972 http://rt.cpan.org/Ticket/Display.html?id=27546 - cropping outside the image would return an Imager object with no low-level image object, instead of returning false. Fixed by: Philip Gwyn (Leolo) http://rt.cpan.org/Ticket/Display.html?id=27509 Imager 0.58 - 16 May 2007 =========== No significant changes from 0.57_01. Imager 0.57_01 - 11 May 2007 ============== - added to_rgb16 to produce a 16-bit/sample version of an image - improve freetype 1.x text output efficiency Bug fixes: - search another place for rgb.txt, and check all the places Imager::Color checks when deciding whether to skip testing it http://rt.cpan.org/Ticket/Display.html?id=26064 - use a convolution kernel size based on the stddev rather than a fixed size when performing a gaussian blur http://rt.cpan.org/Ticket/Display.html?id=25645 - document the difference() method's mindist parameter, and debug it. - put the Imager release number in the Inline::C generated code to regenerate Inline code when a new release of Imager is installed. http://rt.cpan.org/Ticket/Display.html?id=26278 - fix rendering on alpha channel images for the FreeType 1.x driver. http://rt.cpan.org/Ticket/Display.html?id=11972 - fix rendering on alpha channel images for the T1lib driver. http://rt.cpan.org/Ticket/Display.html?id=11972 - reworked library probing, we can now set more than one probe function for a library. Disabled the default (non-freetype-config) library probe and added an extra probe function that searches for both ft2build.h and whatever it includes, and adds -I as needed. Hopefully this will fix build problems like http://www.nntp.perl.org/group/perl.cpan.testers/2007/05/msg472281.html http://rt.cpan.org/Ticket/Display.html?id=26086 Imager 0.57 - 30 Apr 2007 =========== This is a maintenence release fixing a security issue in Imager. - CRITICAL: a specially crafted compressed BMP file can cause a buffer overflow in malloced memory. There will be further discussion of this issue in the ticket below. http://rt.cpan.org/Ticket/Display.html?id=26811 CVE-2007-2459 CVE-2007-2413 The descriptions at cve.mitre.org varied in quality, please see the ticket at rt.cpan.org for a more accurate description of the issue. Imager 0.56 - 1 Apr 2007 =========== - added support for reading 16-bit/sample PGM/PPM images - added support for writing 16-bit/sample PGM/PPM images - improved performance of reading PBM/PGM/PPM images - added support for writing PBM images if the image is paletted and contains only black and white - added a new make_colors value - "mono" - switched from the svn log Changes to a manual Changes to reduce noise - new sample code - samples/flasher.pl Bug fixes: - CRITICAL: the "Imager" typemap entry (not used by Imager itself) was returning an image object with an extra reference, this resulted in a memory leak. http://rt.cpan.org/Ticket/Display.html?id=24992 - fix rendering on alpha channel images for the FreeType 2.x driver http://rt.cpan.org/Ticket/Display.html?id=11972 - reading bmp files now consitently handles short reads. You can now supply a parameter to treat a short read as successful and set i_incomplete http://rt.cpan.org/Ticket/Display.html?id=8426 - previously, reading ASCII PBM files required spaces between samples, even though the format doesn't require that - improved documentation of the unsharpmask filter (I hope) http://rt.cpan.org/Ticket/Display.html?id=25531 - force flushing of the output from i_tt_dump_names() and test output in t/t35ttfont.t to prevent output from being mixed up. https://rt.cpan.org/Ticket/Display.html?id=24859 - rewrite a conditional expression as an if() to hopefully work around a bug in the pre-4.0 GCC Apple shipped with OS X 10.4. https://rt.cpan.org/Ticket/Display.html?id=25561 - avoid Data::Dumper in regops.perl to support older releases of perl https://rt.cpan.org/Ticket/Display.html?id=24391 Imager 0.55 - 16 Dec 2006 =========== This is primarily a bug fix release. Note: Test::More is now a pre-requisite for Imager and is no longer bundled. There is one new feature: - the Win32 font driver now supports UTF8 (RT 22166) http://www.cpanforum.com/threads/3276 http://rt.cpan.org/Ticket/Display.html?id=22166 Several bugs were fixed: - the string() method would not output the string "0" http://rt.cpan.org/Public/Bug/Display.html?id=21770 - fills.c was failing to compile on Solaris 10 (compiler unknown) http://rt.cpan.org/Public/Bug/Display.html?id=21944 - the gif_disposal and gif_user_input tags weren't being read from the file correctly http://rt.cpan.org/Public/Bug/Display.html?id=22192 - gif.c was failing to build under MSVC http://rt.cpan.org/Ticket/Display.html?id=23922 - in some cases strings passed to the string() method were treated as terminated by NUL (chr 0) http://rt.cpan.org/Public/Bug/Display.html?id=21770 - on "MSWin32" perl builds we now link to -lzlib instead of -lz since that's the default build name for zlib on Win32. http://rt.cpan.org/Ticket/Display.html?id=23064 - search $Config{incpath} for headers too, which we should have been doing all along. Win32 font driver fixes: - the global descent value from bounding box was the wrong sign http://www.cpanforum.com/threads/3276 - if the first or last glyph overflowed the left or right side of the advance width they would be clipped Imager 0.54 - 14 Sep 2006 =========== This is primarily a feature release: - a new qtype value 'mixing' has been added to the scale() method. This is faster than 'normal', slower than 'preview'. This is based on the method used by pnmscale, and seems to produce less blurry results than normal. http://rt.cpan.org/Public/Bug/Display.html?id=20677 - the rubthrough() method can now render onto images with an alpha channel. http://rt.cpan.org/Ticket/Display.html?id=20678 - the read_multi() method now falls back to calling doing a single image read via the read() method and write_multi() will now fall back to calling write() if a single image is supplied. This means you can simply call the read_multi() or write_multi() functions without having to check if the type is formatted by that method. http://rt.cpan.org/Ticket/Display.html?id=19457 http://rt.cpan.org/Ticket/Display.html?id=19458 - the GIF loop extension can now be written. If you don't have libungif/giflib 4.1.4 (or some distribution's bugfixed equivalent) you should upgrade. http://rt.cpan.org/Ticket/Display.html?id=21185 - getscanline() and setscanline() can now read/write palette index based data from/to the image for paletted images, by setting type to 'index'. http://rt.cpan.org/Ticket/Display.html?id=20338 - we no longer hassle you to disable GIF support http://rt.cpan.org/Ticket/Display.html?id=20687 - minor documentation fixes Imager 0.53 - 26 Jul 2006 =========== This is a bugfix release. Some test code was left in a code path not covered by the test suite. A test was added to cover this code path and the test code was removed. http://rt.cpan.org/Public/Bug/Display.html?id=20705 Imager 0.52 - 25 Jul 2006 =========== This is primarily a feature release, but contains a fair few bug fixes, new features: - ability to read and write MS Windows ICO and CUR files - you can now add file format plugins to support new file formats - add POD coverage tests - setcolors() and addcolors() now accept color names and so on instead of requiring Imager::Color objects. http://rt.cpan.org/Ticket/Display.html?id=20056 - flood_fill() can now fill to a specified border color instead of just to the area the same color as the seed. http://rt.cpan.org/Ticket/Display.html?id=19618 Bug fixes: - bounding_box for the T1 driver wasn't converting UTF8 to ascii when calculating the advance width. http://rt.cpan.org/Public/Bug/Display.html?id=20554 - bounding_box for the T1 driver wasn't including leading and trailing spaces in the bounding box as the other drivers did, it also produced strange results for empty strings or strings containing only spaces - when reading CMYK jpeg images they were being transferred to the image object as is, producing a four channel image. It only looked ok due to an old still unfixed Photoshop bug. We now convert from the inverted CMYK that photoshop (and Corel for example) produce into RGB. http://rt.cpan.org/Ticket/Display.html?id=20416 - reading a CYMK TIFF would result in a 4 channel image, reading any image with more than 4 channels (eg. RGB with 2 alpha channels) would result in an error. http://rt.cpan.org/Ticket/Display.html?id=20415 - added /usr/local/include to the default include search path, since we were already searching /usr/local/lib for libraries. And various minor fixes and documentation updates. Imager 0.51 - 23 Apr 2006 =========== - fix a validation bug when processing JPEG EXIF data that can cause a crash http://rt.cpan.org/Public/Bug/Display.html?id=18496 - fix mis-processing of the src_maxx and src_maxy parameters of the paste() method http://rt.cpan.org/Public/Bug/Display.html?id=18712 - fix a problem in Imager's "smart" handling of the color parameter to various methods. http://rt.cpan.org/Public/Bug/Display.html?id=18561 Imager 0.50 - 29 Mar 2006 =========== - CRITICAL: fixes a segmentation fault from attempting to write a 2 or 4 channel image to jpeg or a 2 channel image to tga where the output is an in-memeory buffer. http://rt.cpan.org/Public/Bug/Display.html?id=18397 - fixes an incorrect pointer parameter in the PNG code http://rt.cpan.org/Public/Bug/Display.html?id=18051 - skip Inline::C tests when building in a directory with spaces http://rt.cpan.org/Public/Bug/Display.html?id=18049