1 Imager release history. Older releases can be found in Changes.old
3 Imager 0.65 - unreleased
8 - In some cases when an error occurs reading those parts of a JPEG
9 file after the image the scan-line buffer could be freed a second
10 time. In cases where the the error occured while reading the image
11 data it's possible that the buffer could have leaked.
12 Thanks to Gabriel Vasseur for reporting this and help in tracking
15 - the gif_screen_height tag was overriding the screen width and being
16 ignored for the screen height when present.
17 https://rt.cpan.org/Public/Bug/Display.html?id=35568
19 Imager 0.64 - 23 April 2008
22 This is a bug fix release. This includes a fix for a possible
27 - Possible security issue: The floating point sample path for image
28 based fills had a buffer overflow. This would overwrite the end of
29 a malloc()ed buffer with double precision floats.
30 http://rt.cpan.org/Ticket/Display.html?id=35324
33 - check that the result of fileno($fh) is defined rather than simply
34 true when read() or write() is supplied with an fh parameter.
35 http://rt.cpan.org/Ticket/Display.html?id=35139
37 - i_scale_axis() wasn't checking the result of i_img_new_ch()
38 resulting in a SIGSEGV when attempting to scale an image to a size
39 too large to fit in memory. This is a NULL pointer access issue,
40 not a buffer overflow.
41 Added a check for the failure.
42 scale_calculate() (and hence scale()) will now fail if any of the
43 scale size parameters are a reference.
44 http://rt.cpan.org/Ticket/Display.html?id=35172
46 - Regression: filling a greyscale image with a hatch used the wrong
47 color channels from the supplied fg/bg colors.
48 https://rt.cpan.org/Ticket/Display.html?id=35278
50 - fixed a related problem for image fills.
52 Imager 0.63 - 7 April 2008
55 This release primarily contains changes to improve ease of use -
56 rather than you having to convert images to the appropriate number of
57 channels, Imager handles it internally. How to handle drawing colors
58 and the default combine mode is a thornier problem left for some other
61 - the font libraries are now only initialized when needed.
62 http://rt.cpan.org/Ticket/Display.html?id=28825
64 - moved the imtoc.perl code into Imager::Preprocess
66 - paste() and rubthrough() now adapt the source image data to the
67 destination, so you can now safely paste/rubthrough from greyscale
68 images to color images or back, or from alpha channel images to
69 noalpha channels or back.
70 https://rt.cpan.org/Ticket/Display.html?id=30908
72 - rubthrough() now falls back to pasting when the source doesn't have
73 an alpha channel. This effectively treats the source as having a
74 max alpha channel, the right thing to do.
75 http://rt.cpan.org/Ticket/Display.html?id=29944
77 - re-worked most of the area filling code to use a common set of
78 functions when filling.
79 Corrected normal combine mode.
80 Rewrote most of the combine modes to match the way the SVG draft
81 defines them with respect to a translucent source and destination.
82 Added tests for translucent source and destination.
83 Added tests to check 8-bit/sample and double/sample combines work
85 https://rt.cpan.org/Ticket/Display.html?id=29879
87 - writing a 2 or 4 channel image to a JPEG file will now write that
88 image as if composited against a background, black by default,
89 overridable with the i_background tag/parameter.
90 https://rt.cpan.org/Ticket/Display.html?id=29876
92 - writing a 2 or 4 channel image to a PGM/PPM file will now write
93 that image as if composited against a background, black by default,
94 overridable with the i_background tag/parameter.
95 http://rt.cpan.org/Ticket/Display.html?id=30074
97 - writing a 2 or 4 channel image to a BMP file will now write that
98 image as if composited against a background, black by default,
99 overridable with the i_background tag/parameter.
100 http://rt.cpan.org/Ticket/Display.html?id=30075
104 - Imager::Matrix2d->translate() now only requires one of the x or y
106 http://rt.cpan.org/Ticket/Display.html?id=29937
108 - mixing qtype scaling now sets all channels of a pixel to zero if
109 the pixel has zero coverage (zero alpha). This should produce more
110 compressible output files.
111 http://rt.cpan.org/Ticket/Display.html?id=32324
113 - removed the pointless #! line from lib/Imager/Font/Wrap.pm
115 https://bugzilla.redhat.com/show_bug.cgi?id=166254
116 I'm not changing the #! lines of the sample code, since it's sample
117 code, not intended for installation.
118 http://rt.cpan.org/Ticket/Display.html?id=33408
120 - some TGA images weren't being detected correctly as TGA images
121 https://rt.cpan.org/Ticket/Display.html?id=32925
123 - handling of the left-over bit for 16-bit/pixel TGA images has been
124 changed to match the behaviour of the GIMP. Previously the bit
125 being set was treated as an opaque pixel, but one user reported a
126 problem with loading such an image. I haven't been able to find any
127 tools beyond the GIMP that handle alpha-channel 16-bit TGAs, so
128 I'll match it's behaviour. See issue 114913 in the GIMP's
130 http://rt.cpan.org/Ticket/Display.html?id=32926
132 Imager 0.62 - 10 December 2007
135 - Makefile.PL now expands ~/path supplied to --incpath or --libpath
136 to /path under your home directory.
137 http://rt.cpan.org/Ticket/Display.html?id=29484
139 - the old dynaload code used Mach API functions to load dynamic
140 libraries on Mac OS X. These APIs have been deprecated in OS X
141 10.5 and were causing some build problems.
142 So henceforth Imager uses the dlopen() family of functions, and you
143 will need version 10.3 or later of OS X.
145 - added the det() function to the transform2() engine.
146 added the sample quad_to_square.pl
147 Courtesy Richard Fairhurst.
148 http://rt.cpan.org/Ticket/Display.html?id=31244
152 - samples/gifscale.pl sourced the base value for gif_top from
154 Thanks to Eleneldil G. Arilou for pointing this out.
156 - t/t82inline.t no longer loads B at runtime, to work around a bug
157 in some 5.005_0[45] installations.
158 http://rt.cpan.org/Ticket/Display.html?id=30508
160 - work around Module::Depends::Intrusive bug #21229
161 http://rt.cpan.org/Ticket/Display.html?id=30520
163 - the hardinvert filter no-longer inverts the alpha channel.
164 http://rt.cpan.org/Ticket/Display.html?id=30002
166 - the hardinvert filter now supports large samples
168 Imager 0.61_02 - 28 November 2007
171 - major TIFF support re-work
172 http://rt.cpan.org/Ticket/Display.html?id=20329
174 - added a C level image interface for accessing samples from 1-32
175 bits, exposed this at the perl level in getsamples()
177 - the conv filter now works at floating point precision for high bit
180 - added is_bilevel method to test whether an image should be written as
181 a bilevel image if the image format supports it.
183 - added -log-stderr as an Imager import list option
185 - added some important types to Imager::APIRef
187 - added test_image_double() to Imager::Test
191 - Imager::Fountain couldn't read GIMP gradient files with 10 or more
194 - the scale() method with qtype mixing now handles images with an
195 alpha channel correctly.
197 - fixed a broken link from the "animated GIF" entry in the concept index.
198 Thanks to Slaven Rezic.
199 http://rt.cpan.org/Ticket/Display.html?id=30889
201 - on some perl's the infix expression parser test would fail due to
202 actions in the grammar returning false. Made sure all actions return
204 Thanks to Richard Fairhurst for spending a lot of time in tracking
206 http://rt.cpan.org/Public/Bug/Display.html?id=29562
208 Imager 0.61 - 5 November 2007
211 - added samples/gifscale.pl, which adjusts the screen size/position tags
212 when scaling an animated gif
213 http://rt.cpan.org/Ticket/Display.html?id=27591
217 - correct handling of sz in matrix_transform() - this should allow
218 perspective type transformations to work now.
219 http://rt.cpan.org/Ticket/Display.html?id=29936
221 - prevent a cast to integer warning on x64 builds in datatypes.c
222 also fixed some other type warnings
223 https://rt.cpan.org/Ticket/Display.html?id=30204
225 - some sub-directory tests depended on files produced by the parent
227 http://rt.cpan.org/Ticket/Display.html?id=30203
229 - Imager::Font::Wrap doesn't correctly set savepos
230 thanks to Nikita Dedik and Eleneldil G. Arilou for reporting this.
231 http://rt.cpan.org/Ticket/Display.html?id=29771
233 - test 171 in t/t01introvert.t was failing on perls configured to
235 http://rt.cpan.org/Ticket/Display.html?id=29413
237 - the code for the transform2() uminus operator was missing a break.
238 Added tests for better code coverage of the ops.
239 http://rt.cpan.org/Ticket/Display.html?id=29296
241 - the SGI RLE compression code could overflow its compression buffer
242 http://rt.cpan.org/Ticket/Display.html?id=30334
244 - the 32-bit output function used by the SGI code only handled values
245 under 0x10000. This was most noticable when writing large RLE images.
246 http://rt.cpan.org/Ticket/Display.html?id=30335
248 - validate chan_count for chans == NULL for each of the i_gsamp()
250 http://rt.cpan.org/Ticket/Display.html?id=28985
252 - attempt to work around the test failure at
253 http://www.nntp.perl.org/group/perl.cpan.testers/2007/09/msg650810.html
254 http://rt.cpan.org/Ticket/Display.html?id=29562
256 - improve the error messages produced when attempting to read or write
257 an unknown image file format.
258 http://rt.cpan.org/Ticket/Display.html?id=30103
260 - improve the transform2() documentation
261 http://rt.cpan.org/Ticket/Display.html?id=29267
263 - correctly generate the author key in META.yml
264 http://rt.cpan.org/Ticket/Display.html?id=30377
266 - correctly blend a rotated (or matrix_transformed()) image when
267 performing interpolation in the presence of an alpha channel.
268 Also corrected the centring of the rotated image on the output
271 Imager 0.60 - 30 August 2007
274 - Finished/rewrote Arnar's old SGI RGB file format support, so Imager
275 now has full SGI RGB image format, including RLE and 16-bit/sample
277 https://rt.cpan.org/Ticket/Display.html?id=8666
279 - logging functions are now available in the API
281 - applied Gabriel Vasseur's patch
282 added documentation, further tests, and support for greyscale images
283 Obviously problems are my fault :)
284 https://rt.cpan.org/Ticket/Display.html?id=28142
286 - the mask for ICO/CUR images is now applied as an alpha channel to
287 the returned image. For the old behaviour, supply ico_masked => 0
288 to read() or read_multi(). This should be less confusing when
289 using Imager as a general image processor.
290 https://rt.cpan.org/Ticket/Display.html?id=29001
294 - in some cases it's possible for giflib/libungif to return color
295 indexes outside the range of colors defined by the image's palette.
296 We now expand the palette to match the indexes used.
297 Thanks to Gabriel Vasseur for reporting this.
299 - fixed various memory leaks that could occur when failing to read png,
300 jpeg, bmp or tga files.
302 - to avoid confusion, channels not present in the image are returned as
303 zero by getscanline(). This has no effect on the C level i_glin()
304 and i_glinf() API functions which continue to not set the unused
307 - the convert() method now returns an image of the same sample size as
309 https://rt.cpan.org/Ticket/Display.html?id=28492
311 - remove repeated text in Imager::Files
312 http://rt.cpan.org/Ticket/Display.html?id=27589
314 - be even more explicit that scale() and friends don't modify the source
315 image, but return a new image.
316 http://rt.cpan.org/Ticket/Display.html?id=28570
318 - improve the error message from errstr() when you try to load a font
319 for which the driver hasn't been built in Imager.
320 http://rt.cpan.org/Ticket/Display.html?id=27571
322 - transparency is now enabled by default when writing GIF images
323 http://rt.cpan.org/Ticket/Display.html?id=27615
325 - Imager would not load on Windows 98
326 http://rt.cpan.org/Ticket/Display.html?id=27653
328 Imager 0.59 - 14 June 2007
333 - fixes a regression introduced by the fixes for RT 11972
334 http://rt.cpan.org/Ticket/Display.html?id=27546
336 - cropping outside the image would return an Imager object with
337 no low-level image object, instead of returning false.
338 Fixed by: Philip Gwyn (Leolo)
339 http://rt.cpan.org/Ticket/Display.html?id=27509
341 Imager 0.58 - 16 May 2007
344 No significant changes from 0.57_01.
346 Imager 0.57_01 - 11 May 2007
349 - added to_rgb16 to produce a 16-bit/sample version of an image
351 - improve freetype 1.x text output efficiency
355 - search another place for rgb.txt, and check all the places
356 Imager::Color checks when deciding whether to skip testing it
357 http://rt.cpan.org/Ticket/Display.html?id=26064
359 - use a convolution kernel size based on the stddev rather than a
360 fixed size when performing a gaussian blur
361 http://rt.cpan.org/Ticket/Display.html?id=25645
363 - document the difference() method's mindist parameter, and debug it.
365 - put the Imager release number in the Inline::C generated code to
366 regenerate Inline code when a new release of Imager is installed.
367 http://rt.cpan.org/Ticket/Display.html?id=26278
369 - fix rendering on alpha channel images for the FreeType 1.x driver.
370 http://rt.cpan.org/Ticket/Display.html?id=11972
372 - fix rendering on alpha channel images for the T1lib driver.
373 http://rt.cpan.org/Ticket/Display.html?id=11972
375 - reworked library probing, we can now set more than one probe
376 function for a library. Disabled the default (non-freetype-config)
377 library probe and added an extra probe function that searches for
378 both ft2build.h and whatever it includes, and adds -I as needed.
379 Hopefully this will fix build problems like
380 http://www.nntp.perl.org/group/perl.cpan.testers/2007/05/msg472281.html
381 http://rt.cpan.org/Ticket/Display.html?id=26086
383 Imager 0.57 - 30 Apr 2007
386 This is a maintenence release fixing a security issue in Imager.
388 - CRITICAL: a specially crafted compressed BMP file can cause a buffer
389 overflow in malloced memory. There will be further discussion of
390 this issue in the ticket below.
391 http://rt.cpan.org/Ticket/Display.html?id=26811
392 CVE-2007-2459 CVE-2007-2413
393 The descriptions at cve.mitre.org varied in quality, please see the
394 ticket at rt.cpan.org for a more accurate description of the issue.
396 Imager 0.56 - 1 Apr 2007
399 - added support for reading 16-bit/sample PGM/PPM images
401 - added support for writing 16-bit/sample PGM/PPM images
403 - improved performance of reading PBM/PGM/PPM images
405 - added support for writing PBM images if the image is paletted and
406 contains only black and white
408 - added a new make_colors value - "mono"
410 - switched from the svn log Changes to a manual Changes to reduce
413 - new sample code - samples/flasher.pl
417 - CRITICAL: the "Imager" typemap entry (not used by Imager itself)
418 was returning an image object with an extra reference, this
419 resulted in a memory leak.
420 http://rt.cpan.org/Ticket/Display.html?id=24992
422 - fix rendering on alpha channel images for the FreeType 2.x driver
423 http://rt.cpan.org/Ticket/Display.html?id=11972
425 - reading bmp files now consitently handles short reads. You can now
426 supply a parameter to treat a short read as successful and set
428 http://rt.cpan.org/Ticket/Display.html?id=8426
430 - previously, reading ASCII PBM files required spaces between samples,
431 even though the format doesn't require that
433 - improved documentation of the unsharpmask filter (I hope)
434 http://rt.cpan.org/Ticket/Display.html?id=25531
436 - force flushing of the output from i_tt_dump_names() and test output
437 in t/t35ttfont.t to prevent output from being mixed up.
438 https://rt.cpan.org/Ticket/Display.html?id=24859
440 - rewrite a conditional expression as an if() to hopefully work around
441 a bug in the pre-4.0 GCC Apple shipped with OS X 10.4.
442 https://rt.cpan.org/Ticket/Display.html?id=25561
444 - avoid Data::Dumper in regops.perl to support older releases of perl
445 https://rt.cpan.org/Ticket/Display.html?id=24391
447 Imager 0.55 - 16 Dec 2006
450 This is primarily a bug fix release.
452 Note: Test::More is now a pre-requisite for Imager and is no longer bundled.
454 There is one new feature:
456 - the Win32 font driver now supports UTF8 (RT 22166)
457 http://www.cpanforum.com/threads/3276
458 http://rt.cpan.org/Ticket/Display.html?id=22166
460 Several bugs were fixed:
462 - the string() method would not output the string "0"
463 http://rt.cpan.org/Public/Bug/Display.html?id=21770
465 - fills.c was failing to compile on Solaris 10 (compiler unknown)
466 http://rt.cpan.org/Public/Bug/Display.html?id=21944
468 - the gif_disposal and gif_user_input tags weren't being read from
470 http://rt.cpan.org/Public/Bug/Display.html?id=22192
472 - gif.c was failing to build under MSVC
473 http://rt.cpan.org/Ticket/Display.html?id=23922
475 - in some cases strings passed to the string() method were treated as
476 terminated by NUL (chr 0)
477 http://rt.cpan.org/Public/Bug/Display.html?id=21770
479 - on "MSWin32" perl builds we now link to -lzlib instead of -lz since
480 that's the default build name for zlib on Win32.
481 http://rt.cpan.org/Ticket/Display.html?id=23064
483 - search $Config{incpath} for headers too, which we should have been
486 Win32 font driver fixes:
488 - the global descent value from bounding box was the wrong sign
489 http://www.cpanforum.com/threads/3276
491 - if the first or last glyph overflowed the left or right side of the
492 advance width they would be clipped
495 Imager 0.54 - 14 Sep 2006
498 This is primarily a feature release:
500 - a new qtype value 'mixing' has been added to the scale()
501 method. This is faster than 'normal', slower than 'preview'. This
502 is based on the method used by pnmscale, and seems to produce less
503 blurry results than normal.
504 http://rt.cpan.org/Public/Bug/Display.html?id=20677
506 - the rubthrough() method can now render onto images with an alpha
508 http://rt.cpan.org/Ticket/Display.html?id=20678
510 - the read_multi() method now falls back to calling doing a single
511 image read via the read() method and write_multi() will now fall
512 back to calling write() if a single image is supplied. This means
513 you can simply call the read_multi() or write_multi() functions
514 without having to check if the type is formatted by that method.
515 http://rt.cpan.org/Ticket/Display.html?id=19457
516 http://rt.cpan.org/Ticket/Display.html?id=19458
518 - the GIF loop extension can now be written. If you don't have
519 libungif/giflib 4.1.4 (or some distribution's bugfixed equivalent) you
521 http://rt.cpan.org/Ticket/Display.html?id=21185
523 - getscanline() and setscanline() can now read/write palette index
524 based data from/to the image for paletted images, by setting type to
526 http://rt.cpan.org/Ticket/Display.html?id=20338
528 - we no longer hassle you to disable GIF support
529 http://rt.cpan.org/Ticket/Display.html?id=20687
531 - minor documentation fixes
534 Imager 0.53 - 26 Jul 2006
537 This is a bugfix release.
539 Some test code was left in a code path not covered by the test
540 suite. A test was added to cover this code path and the test code was
542 http://rt.cpan.org/Public/Bug/Display.html?id=20705
545 Imager 0.52 - 25 Jul 2006
548 This is primarily a feature release, but contains a fair few bug
551 - ability to read and write MS Windows ICO and CUR files
553 - you can now add file format plugins to support new file formats
555 - add POD coverage tests
557 - setcolors() and addcolors() now accept color names and so on
558 instead of requiring Imager::Color objects.
559 http://rt.cpan.org/Ticket/Display.html?id=20056
561 - flood_fill() can now fill to a specified border color instead of
562 just to the area the same color as the seed.
563 http://rt.cpan.org/Ticket/Display.html?id=19618
568 - bounding_box for the T1 driver wasn't converting UTF8 to ascii when
569 calculating the advance width.
570 http://rt.cpan.org/Public/Bug/Display.html?id=20554
572 - bounding_box for the T1 driver wasn't including leading and
573 trailing spaces in the bounding box as the other drivers did, it also
574 produced strange results for empty strings or strings containing only
577 - when reading CMYK jpeg images they were being transferred to the
578 image object as is, producing a four channel image. It only looked ok
579 due to an old still unfixed Photoshop bug. We now convert from the
580 inverted CMYK that photoshop (and Corel for example) produce into RGB.
581 http://rt.cpan.org/Ticket/Display.html?id=20416
583 - reading a CYMK TIFF would result in a 4 channel image, reading any
584 image with more than 4 channels (eg. RGB with 2 alpha channels) would
586 http://rt.cpan.org/Ticket/Display.html?id=20415
588 - added /usr/local/include to the default include search path, since
589 we were already searching /usr/local/lib for libraries.
591 And various minor fixes and documentation updates.
594 Imager 0.51 - 23 Apr 2006
597 - fix a validation bug when processing JPEG EXIF data that can cause
599 http://rt.cpan.org/Public/Bug/Display.html?id=18496
601 - fix mis-processing of the src_maxx and src_maxy parameters of the
603 http://rt.cpan.org/Public/Bug/Display.html?id=18712
605 - fix a problem in Imager's "smart" handling of the color parameter
607 http://rt.cpan.org/Public/Bug/Display.html?id=18561
610 Imager 0.50 - 29 Mar 2006
613 - CRITICAL: fixes a segmentation fault from attempting to write a 2
614 or 4 channel image to jpeg or a 2 channel image to tga where the
615 output is an in-memeory buffer.
616 http://rt.cpan.org/Public/Bug/Display.html?id=18397
618 - fixes an incorrect pointer parameter in the PNG code
619 http://rt.cpan.org/Public/Bug/Display.html?id=18051
621 - skip Inline::C tests when building in a directory with spaces
622 http://rt.cpan.org/Public/Bug/Display.html?id=18049