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 Imager 0.64 - 23 April 2008
18 This is a bug fix release. This includes a fix for a possible
23 - Possible security issue: The floating point sample path for image
24 based fills had a buffer overflow. This would overwrite the end of
25 a malloc()ed buffer with double precision floats.
26 http://rt.cpan.org/Ticket/Display.html?id=35324
29 - check that the result of fileno($fh) is defined rather than simply
30 true when read() or write() is supplied with an fh parameter.
31 http://rt.cpan.org/Ticket/Display.html?id=35139
33 - i_scale_axis() wasn't checking the result of i_img_new_ch()
34 resulting in a SIGSEGV when attempting to scale an image to a size
35 too large to fit in memory. This is a NULL pointer access issue,
36 not a buffer overflow.
37 Added a check for the failure.
38 scale_calculate() (and hence scale()) will now fail if any of the
39 scale size parameters are a reference.
40 http://rt.cpan.org/Ticket/Display.html?id=35172
42 - Regression: filling a greyscale image with a hatch used the wrong
43 color channels from the supplied fg/bg colors.
44 https://rt.cpan.org/Ticket/Display.html?id=35278
46 - fixed a related problem for image fills.
48 Imager 0.63 - 7 April 2008
51 This release primarily contains changes to improve ease of use -
52 rather than you having to convert images to the appropriate number of
53 channels, Imager handles it internally. How to handle drawing colors
54 and the default combine mode is a thornier problem left for some other
57 - the font libraries are now only initialized when needed.
58 http://rt.cpan.org/Ticket/Display.html?id=28825
60 - moved the imtoc.perl code into Imager::Preprocess
62 - paste() and rubthrough() now adapt the source image data to the
63 destination, so you can now safely paste/rubthrough from greyscale
64 images to color images or back, or from alpha channel images to
65 noalpha channels or back.
66 https://rt.cpan.org/Ticket/Display.html?id=30908
68 - rubthrough() now falls back to pasting when the source doesn't have
69 an alpha channel. This effectively treats the source as having a
70 max alpha channel, the right thing to do.
71 http://rt.cpan.org/Ticket/Display.html?id=29944
73 - re-worked most of the area filling code to use a common set of
74 functions when filling.
75 Corrected normal combine mode.
76 Rewrote most of the combine modes to match the way the SVG draft
77 defines them with respect to a translucent source and destination.
78 Added tests for translucent source and destination.
79 Added tests to check 8-bit/sample and double/sample combines work
81 https://rt.cpan.org/Ticket/Display.html?id=29879
83 - writing a 2 or 4 channel image to a JPEG file will now write that
84 image as if composited against a background, black by default,
85 overridable with the i_background tag/parameter.
86 https://rt.cpan.org/Ticket/Display.html?id=29876
88 - writing a 2 or 4 channel image to a PGM/PPM file will now write
89 that image as if composited against a background, black by default,
90 overridable with the i_background tag/parameter.
91 http://rt.cpan.org/Ticket/Display.html?id=30074
93 - writing a 2 or 4 channel image to a BMP file will now write that
94 image as if composited against a background, black by default,
95 overridable with the i_background tag/parameter.
96 http://rt.cpan.org/Ticket/Display.html?id=30075
100 - Imager::Matrix2d->translate() now only requires one of the x or y
102 http://rt.cpan.org/Ticket/Display.html?id=29937
104 - mixing qtype scaling now sets all channels of a pixel to zero if
105 the pixel has zero coverage (zero alpha). This should produce more
106 compressible output files.
107 http://rt.cpan.org/Ticket/Display.html?id=32324
109 - removed the pointless #! line from lib/Imager/Font/Wrap.pm
111 https://bugzilla.redhat.com/show_bug.cgi?id=166254
112 I'm not changing the #! lines of the sample code, since it's sample
113 code, not intended for installation.
114 http://rt.cpan.org/Ticket/Display.html?id=33408
116 - some TGA images weren't being detected correctly as TGA images
117 https://rt.cpan.org/Ticket/Display.html?id=32925
119 - handling of the left-over bit for 16-bit/pixel TGA images has been
120 changed to match the behaviour of the GIMP. Previously the bit
121 being set was treated as an opaque pixel, but one user reported a
122 problem with loading such an image. I haven't been able to find any
123 tools beyond the GIMP that handle alpha-channel 16-bit TGAs, so
124 I'll match it's behaviour. See issue 114913 in the GIMP's
126 http://rt.cpan.org/Ticket/Display.html?id=32926
128 Imager 0.62 - 10 December 2007
131 - Makefile.PL now expands ~/path supplied to --incpath or --libpath
132 to /path under your home directory.
133 http://rt.cpan.org/Ticket/Display.html?id=29484
135 - the old dynaload code used Mach API functions to load dynamic
136 libraries on Mac OS X. These APIs have been deprecated in OS X
137 10.5 and were causing some build problems.
138 So henceforth Imager uses the dlopen() family of functions, and you
139 will need version 10.3 or later of OS X.
141 - added the det() function to the transform2() engine.
142 added the sample quad_to_square.pl
143 Courtesy Richard Fairhurst.
144 http://rt.cpan.org/Ticket/Display.html?id=31244
148 - samples/gifscale.pl sourced the base value for gif_top from
150 Thanks to Eleneldil G. Arilou for pointing this out.
152 - t/t82inline.t no longer loads B at runtime, to work around a bug
153 in some 5.005_0[45] installations.
154 http://rt.cpan.org/Ticket/Display.html?id=30508
156 - work around Module::Depends::Intrusive bug #21229
157 http://rt.cpan.org/Ticket/Display.html?id=30520
159 - the hardinvert filter no-longer inverts the alpha channel.
160 http://rt.cpan.org/Ticket/Display.html?id=30002
162 - the hardinvert filter now supports large samples
164 Imager 0.61_02 - 28 November 2007
167 - major TIFF support re-work
168 http://rt.cpan.org/Ticket/Display.html?id=20329
170 - added a C level image interface for accessing samples from 1-32
171 bits, exposed this at the perl level in getsamples()
173 - the conv filter now works at floating point precision for high bit
176 - added is_bilevel method to test whether an image should be written as
177 a bilevel image if the image format supports it.
179 - added -log-stderr as an Imager import list option
181 - added some important types to Imager::APIRef
183 - added test_image_double() to Imager::Test
187 - Imager::Fountain couldn't read GIMP gradient files with 10 or more
190 - the scale() method with qtype mixing now handles images with an
191 alpha channel correctly.
193 - fixed a broken link from the "animated GIF" entry in the concept index.
194 Thanks to Slaven Rezic.
195 http://rt.cpan.org/Ticket/Display.html?id=30889
197 - on some perl's the infix expression parser test would fail due to
198 actions in the grammar returning false. Made sure all actions return
200 Thanks to Richard Fairhurst for spending a lot of time in tracking
202 http://rt.cpan.org/Public/Bug/Display.html?id=29562
204 Imager 0.61 - 5 November 2007
207 - added samples/gifscale.pl, which adjusts the screen size/position tags
208 when scaling an animated gif
209 http://rt.cpan.org/Ticket/Display.html?id=27591
213 - correct handling of sz in matrix_transform() - this should allow
214 perspective type transformations to work now.
215 http://rt.cpan.org/Ticket/Display.html?id=29936
217 - prevent a cast to integer warning on x64 builds in datatypes.c
218 also fixed some other type warnings
219 https://rt.cpan.org/Ticket/Display.html?id=30204
221 - some sub-directory tests depended on files produced by the parent
223 http://rt.cpan.org/Ticket/Display.html?id=30203
225 - Imager::Font::Wrap doesn't correctly set savepos
226 thanks to Nikita Dedik and Eleneldil G. Arilou for reporting this.
227 http://rt.cpan.org/Ticket/Display.html?id=29771
229 - test 171 in t/t01introvert.t was failing on perls configured to
231 http://rt.cpan.org/Ticket/Display.html?id=29413
233 - the code for the transform2() uminus operator was missing a break.
234 Added tests for better code coverage of the ops.
235 http://rt.cpan.org/Ticket/Display.html?id=29296
237 - the SGI RLE compression code could overflow its compression buffer
238 http://rt.cpan.org/Ticket/Display.html?id=30334
240 - the 32-bit output function used by the SGI code only handled values
241 under 0x10000. This was most noticable when writing large RLE images.
242 http://rt.cpan.org/Ticket/Display.html?id=30335
244 - validate chan_count for chans == NULL for each of the i_gsamp()
246 http://rt.cpan.org/Ticket/Display.html?id=28985
248 - attempt to work around the test failure at
249 http://www.nntp.perl.org/group/perl.cpan.testers/2007/09/msg650810.html
250 http://rt.cpan.org/Ticket/Display.html?id=29562
252 - improve the error messages produced when attempting to read or write
253 an unknown image file format.
254 http://rt.cpan.org/Ticket/Display.html?id=30103
256 - improve the transform2() documentation
257 http://rt.cpan.org/Ticket/Display.html?id=29267
259 - correctly generate the author key in META.yml
260 http://rt.cpan.org/Ticket/Display.html?id=30377
262 - correctly blend a rotated (or matrix_transformed()) image when
263 performing interpolation in the presence of an alpha channel.
264 Also corrected the centring of the rotated image on the output
267 Imager 0.60 - 30 August 2007
270 - Finished/rewrote Arnar's old SGI RGB file format support, so Imager
271 now has full SGI RGB image format, including RLE and 16-bit/sample
273 https://rt.cpan.org/Ticket/Display.html?id=8666
275 - logging functions are now available in the API
277 - applied Gabriel Vasseur's patch
278 added documentation, further tests, and support for greyscale images
279 Obviously problems are my fault :)
280 https://rt.cpan.org/Ticket/Display.html?id=28142
282 - the mask for ICO/CUR images is now applied as an alpha channel to
283 the returned image. For the old behaviour, supply ico_masked => 0
284 to read() or read_multi(). This should be less confusing when
285 using Imager as a general image processor.
286 https://rt.cpan.org/Ticket/Display.html?id=29001
290 - in some cases it's possible for giflib/libungif to return color
291 indexes outside the range of colors defined by the image's palette.
292 We now expand the palette to match the indexes used.
293 Thanks to Gabriel Vasseur for reporting this.
295 - fixed various memory leaks that could occur when failing to read png,
296 jpeg, bmp or tga files.
298 - to avoid confusion, channels not present in the image are returned as
299 zero by getscanline(). This has no effect on the C level i_glin()
300 and i_glinf() API functions which continue to not set the unused
303 - the convert() method now returns an image of the same sample size as
305 https://rt.cpan.org/Ticket/Display.html?id=28492
307 - remove repeated text in Imager::Files
308 http://rt.cpan.org/Ticket/Display.html?id=27589
310 - be even more explicit that scale() and friends don't modify the source
311 image, but return a new image.
312 http://rt.cpan.org/Ticket/Display.html?id=28570
314 - improve the error message from errstr() when you try to load a font
315 for which the driver hasn't been built in Imager.
316 http://rt.cpan.org/Ticket/Display.html?id=27571
318 - transparency is now enabled by default when writing GIF images
319 http://rt.cpan.org/Ticket/Display.html?id=27615
321 - Imager would not load on Windows 98
322 http://rt.cpan.org/Ticket/Display.html?id=27653
324 Imager 0.59 - 14 June 2007
329 - fixes a regression introduced by the fixes for RT 11972
330 http://rt.cpan.org/Ticket/Display.html?id=27546
332 - cropping outside the image would return an Imager object with
333 no low-level image object, instead of returning false.
334 Fixed by: Philip Gwyn (Leolo)
335 http://rt.cpan.org/Ticket/Display.html?id=27509
337 Imager 0.58 - 16 May 2007
340 No significant changes from 0.57_01.
342 Imager 0.57_01 - 11 May 2007
345 - added to_rgb16 to produce a 16-bit/sample version of an image
347 - improve freetype 1.x text output efficiency
351 - search another place for rgb.txt, and check all the places
352 Imager::Color checks when deciding whether to skip testing it
353 http://rt.cpan.org/Ticket/Display.html?id=26064
355 - use a convolution kernel size based on the stddev rather than a
356 fixed size when performing a gaussian blur
357 http://rt.cpan.org/Ticket/Display.html?id=25645
359 - document the difference() method's mindist parameter, and debug it.
361 - put the Imager release number in the Inline::C generated code to
362 regenerate Inline code when a new release of Imager is installed.
363 http://rt.cpan.org/Ticket/Display.html?id=26278
365 - fix rendering on alpha channel images for the FreeType 1.x driver.
366 http://rt.cpan.org/Ticket/Display.html?id=11972
368 - fix rendering on alpha channel images for the T1lib driver.
369 http://rt.cpan.org/Ticket/Display.html?id=11972
371 - reworked library probing, we can now set more than one probe
372 function for a library. Disabled the default (non-freetype-config)
373 library probe and added an extra probe function that searches for
374 both ft2build.h and whatever it includes, and adds -I as needed.
375 Hopefully this will fix build problems like
376 http://www.nntp.perl.org/group/perl.cpan.testers/2007/05/msg472281.html
377 http://rt.cpan.org/Ticket/Display.html?id=26086
379 Imager 0.57 - 30 Apr 2007
382 This is a maintenence release fixing a security issue in Imager.
384 - CRITICAL: a specially crafted compressed BMP file can cause a buffer
385 overflow in malloced memory. There will be further discussion of
386 this issue in the ticket below.
387 http://rt.cpan.org/Ticket/Display.html?id=26811
388 CVE-2007-2459 CVE-2007-2413
389 The descriptions at cve.mitre.org varied in quality, please see the
390 ticket at rt.cpan.org for a more accurate description of the issue.
392 Imager 0.56 - 1 Apr 2007
395 - added support for reading 16-bit/sample PGM/PPM images
397 - added support for writing 16-bit/sample PGM/PPM images
399 - improved performance of reading PBM/PGM/PPM images
401 - added support for writing PBM images if the image is paletted and
402 contains only black and white
404 - added a new make_colors value - "mono"
406 - switched from the svn log Changes to a manual Changes to reduce
409 - new sample code - samples/flasher.pl
413 - CRITICAL: the "Imager" typemap entry (not used by Imager itself)
414 was returning an image object with an extra reference, this
415 resulted in a memory leak.
416 http://rt.cpan.org/Ticket/Display.html?id=24992
418 - fix rendering on alpha channel images for the FreeType 2.x driver
419 http://rt.cpan.org/Ticket/Display.html?id=11972
421 - reading bmp files now consitently handles short reads. You can now
422 supply a parameter to treat a short read as successful and set
424 http://rt.cpan.org/Ticket/Display.html?id=8426
426 - previously, reading ASCII PBM files required spaces between samples,
427 even though the format doesn't require that
429 - improved documentation of the unsharpmask filter (I hope)
430 http://rt.cpan.org/Ticket/Display.html?id=25531
432 - force flushing of the output from i_tt_dump_names() and test output
433 in t/t35ttfont.t to prevent output from being mixed up.
434 https://rt.cpan.org/Ticket/Display.html?id=24859
436 - rewrite a conditional expression as an if() to hopefully work around
437 a bug in the pre-4.0 GCC Apple shipped with OS X 10.4.
438 https://rt.cpan.org/Ticket/Display.html?id=25561
440 - avoid Data::Dumper in regops.perl to support older releases of perl
441 https://rt.cpan.org/Ticket/Display.html?id=24391
443 Imager 0.55 - 16 Dec 2006
446 This is primarily a bug fix release.
448 Note: Test::More is now a pre-requisite for Imager and is no longer bundled.
450 There is one new feature:
452 - the Win32 font driver now supports UTF8 (RT 22166)
453 http://www.cpanforum.com/threads/3276
454 http://rt.cpan.org/Ticket/Display.html?id=22166
456 Several bugs were fixed:
458 - the string() method would not output the string "0"
459 http://rt.cpan.org/Public/Bug/Display.html?id=21770
461 - fills.c was failing to compile on Solaris 10 (compiler unknown)
462 http://rt.cpan.org/Public/Bug/Display.html?id=21944
464 - the gif_disposal and gif_user_input tags weren't being read from
466 http://rt.cpan.org/Public/Bug/Display.html?id=22192
468 - gif.c was failing to build under MSVC
469 http://rt.cpan.org/Ticket/Display.html?id=23922
471 - in some cases strings passed to the string() method were treated as
472 terminated by NUL (chr 0)
473 http://rt.cpan.org/Public/Bug/Display.html?id=21770
475 - on "MSWin32" perl builds we now link to -lzlib instead of -lz since
476 that's the default build name for zlib on Win32.
477 http://rt.cpan.org/Ticket/Display.html?id=23064
479 - search $Config{incpath} for headers too, which we should have been
482 Win32 font driver fixes:
484 - the global descent value from bounding box was the wrong sign
485 http://www.cpanforum.com/threads/3276
487 - if the first or last glyph overflowed the left or right side of the
488 advance width they would be clipped
491 Imager 0.54 - 14 Sep 2006
494 This is primarily a feature release:
496 - a new qtype value 'mixing' has been added to the scale()
497 method. This is faster than 'normal', slower than 'preview'. This
498 is based on the method used by pnmscale, and seems to produce less
499 blurry results than normal.
500 http://rt.cpan.org/Public/Bug/Display.html?id=20677
502 - the rubthrough() method can now render onto images with an alpha
504 http://rt.cpan.org/Ticket/Display.html?id=20678
506 - the read_multi() method now falls back to calling doing a single
507 image read via the read() method and write_multi() will now fall
508 back to calling write() if a single image is supplied. This means
509 you can simply call the read_multi() or write_multi() functions
510 without having to check if the type is formatted by that method.
511 http://rt.cpan.org/Ticket/Display.html?id=19457
512 http://rt.cpan.org/Ticket/Display.html?id=19458
514 - the GIF loop extension can now be written. If you don't have
515 libungif/giflib 4.1.4 (or some distribution's bugfixed equivalent) you
517 http://rt.cpan.org/Ticket/Display.html?id=21185
519 - getscanline() and setscanline() can now read/write palette index
520 based data from/to the image for paletted images, by setting type to
522 http://rt.cpan.org/Ticket/Display.html?id=20338
524 - we no longer hassle you to disable GIF support
525 http://rt.cpan.org/Ticket/Display.html?id=20687
527 - minor documentation fixes
530 Imager 0.53 - 26 Jul 2006
533 This is a bugfix release.
535 Some test code was left in a code path not covered by the test
536 suite. A test was added to cover this code path and the test code was
538 http://rt.cpan.org/Public/Bug/Display.html?id=20705
541 Imager 0.52 - 25 Jul 2006
544 This is primarily a feature release, but contains a fair few bug
547 - ability to read and write MS Windows ICO and CUR files
549 - you can now add file format plugins to support new file formats
551 - add POD coverage tests
553 - setcolors() and addcolors() now accept color names and so on
554 instead of requiring Imager::Color objects.
555 http://rt.cpan.org/Ticket/Display.html?id=20056
557 - flood_fill() can now fill to a specified border color instead of
558 just to the area the same color as the seed.
559 http://rt.cpan.org/Ticket/Display.html?id=19618
564 - bounding_box for the T1 driver wasn't converting UTF8 to ascii when
565 calculating the advance width.
566 http://rt.cpan.org/Public/Bug/Display.html?id=20554
568 - bounding_box for the T1 driver wasn't including leading and
569 trailing spaces in the bounding box as the other drivers did, it also
570 produced strange results for empty strings or strings containing only
573 - when reading CMYK jpeg images they were being transferred to the
574 image object as is, producing a four channel image. It only looked ok
575 due to an old still unfixed Photoshop bug. We now convert from the
576 inverted CMYK that photoshop (and Corel for example) produce into RGB.
577 http://rt.cpan.org/Ticket/Display.html?id=20416
579 - reading a CYMK TIFF would result in a 4 channel image, reading any
580 image with more than 4 channels (eg. RGB with 2 alpha channels) would
582 http://rt.cpan.org/Ticket/Display.html?id=20415
584 - added /usr/local/include to the default include search path, since
585 we were already searching /usr/local/lib for libraries.
587 And various minor fixes and documentation updates.
590 Imager 0.51 - 23 Apr 2006
593 - fix a validation bug when processing JPEG EXIF data that can cause
595 http://rt.cpan.org/Public/Bug/Display.html?id=18496
597 - fix mis-processing of the src_maxx and src_maxy parameters of the
599 http://rt.cpan.org/Public/Bug/Display.html?id=18712
601 - fix a problem in Imager's "smart" handling of the color parameter
603 http://rt.cpan.org/Public/Bug/Display.html?id=18561
606 Imager 0.50 - 29 Mar 2006
609 - CRITICAL: fixes a segmentation fault from attempting to write a 2
610 or 4 channel image to jpeg or a 2 channel image to tga where the
611 output is an in-memeory buffer.
612 http://rt.cpan.org/Public/Bug/Display.html?id=18397
614 - fixes an incorrect pointer parameter in the PNG code
615 http://rt.cpan.org/Public/Bug/Display.html?id=18051
617 - skip Inline::C tests when building in a directory with spaces
618 http://rt.cpan.org/Public/Bug/Display.html?id=18049