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