1 Imager release history. Older releases can be found in Changes.old
3 Imager 0.66 - unreleased
8 - an optimization skipping 0 src alpha values could cause the
9 rubthrough() to read past the end of a buffer.
10 http://www.nntp.perl.org/group/perl.cpan.testers/2008/05/msg1509184.html
12 Imager 0.65 - 20 May 2008
17 - In some cases when an error occurs reading those parts of a JPEG
18 file after the image the scan-line buffer could be freed a second
19 time. In cases where the the error occured while reading the image
20 data it's possible that the buffer could have leaked.
21 Thanks to Gabriel Vasseur for reporting this and help in tracking
24 - the gif_screen_height tag was overriding the screen width and being
25 ignored for the screen height when present.
26 https://rt.cpan.org/Public/Bug/Display.html?id=35568
28 Imager 0.64 - 23 April 2008
31 This is a bug fix release. This includes a fix for a possible
36 - Possible security issue: The floating point sample path for image
37 based fills had a buffer overflow. This would overwrite the end of
38 a malloc()ed buffer with double precision floats.
39 http://rt.cpan.org/Ticket/Display.html?id=35324
42 - check that the result of fileno($fh) is defined rather than simply
43 true when read() or write() is supplied with an fh parameter.
44 http://rt.cpan.org/Ticket/Display.html?id=35139
46 - i_scale_axis() wasn't checking the result of i_img_new_ch()
47 resulting in a SIGSEGV when attempting to scale an image to a size
48 too large to fit in memory. This is a NULL pointer access issue,
49 not a buffer overflow.
50 Added a check for the failure.
51 scale_calculate() (and hence scale()) will now fail if any of the
52 scale size parameters are a reference.
53 http://rt.cpan.org/Ticket/Display.html?id=35172
55 - Regression: filling a greyscale image with a hatch used the wrong
56 color channels from the supplied fg/bg colors.
57 https://rt.cpan.org/Ticket/Display.html?id=35278
59 - fixed a related problem for image fills.
61 Imager 0.63 - 7 April 2008
64 This release primarily contains changes to improve ease of use -
65 rather than you having to convert images to the appropriate number of
66 channels, Imager handles it internally. How to handle drawing colors
67 and the default combine mode is a thornier problem left for some other
70 - the font libraries are now only initialized when needed.
71 http://rt.cpan.org/Ticket/Display.html?id=28825
73 - moved the imtoc.perl code into Imager::Preprocess
75 - paste() and rubthrough() now adapt the source image data to the
76 destination, so you can now safely paste/rubthrough from greyscale
77 images to color images or back, or from alpha channel images to
78 noalpha channels or back.
79 https://rt.cpan.org/Ticket/Display.html?id=30908
81 - rubthrough() now falls back to pasting when the source doesn't have
82 an alpha channel. This effectively treats the source as having a
83 max alpha channel, the right thing to do.
84 http://rt.cpan.org/Ticket/Display.html?id=29944
86 - re-worked most of the area filling code to use a common set of
87 functions when filling.
88 Corrected normal combine mode.
89 Rewrote most of the combine modes to match the way the SVG draft
90 defines them with respect to a translucent source and destination.
91 Added tests for translucent source and destination.
92 Added tests to check 8-bit/sample and double/sample combines work
94 https://rt.cpan.org/Ticket/Display.html?id=29879
96 - writing a 2 or 4 channel image to a JPEG file will now write that
97 image as if composited against a background, black by default,
98 overridable with the i_background tag/parameter.
99 https://rt.cpan.org/Ticket/Display.html?id=29876
101 - writing a 2 or 4 channel image to a PGM/PPM file will now write
102 that image as if composited against a background, black by default,
103 overridable with the i_background tag/parameter.
104 http://rt.cpan.org/Ticket/Display.html?id=30074
106 - writing a 2 or 4 channel image to a BMP file will now write that
107 image as if composited against a background, black by default,
108 overridable with the i_background tag/parameter.
109 http://rt.cpan.org/Ticket/Display.html?id=30075
113 - Imager::Matrix2d->translate() now only requires one of the x or y
115 http://rt.cpan.org/Ticket/Display.html?id=29937
117 - mixing qtype scaling now sets all channels of a pixel to zero if
118 the pixel has zero coverage (zero alpha). This should produce more
119 compressible output files.
120 http://rt.cpan.org/Ticket/Display.html?id=32324
122 - removed the pointless #! line from lib/Imager/Font/Wrap.pm
124 https://bugzilla.redhat.com/show_bug.cgi?id=166254
125 I'm not changing the #! lines of the sample code, since it's sample
126 code, not intended for installation.
127 http://rt.cpan.org/Ticket/Display.html?id=33408
129 - some TGA images weren't being detected correctly as TGA images
130 https://rt.cpan.org/Ticket/Display.html?id=32925
132 - handling of the left-over bit for 16-bit/pixel TGA images has been
133 changed to match the behaviour of the GIMP. Previously the bit
134 being set was treated as an opaque pixel, but one user reported a
135 problem with loading such an image. I haven't been able to find any
136 tools beyond the GIMP that handle alpha-channel 16-bit TGAs, so
137 I'll match it's behaviour. See issue 114913 in the GIMP's
139 http://rt.cpan.org/Ticket/Display.html?id=32926
141 Imager 0.62 - 10 December 2007
144 - Makefile.PL now expands ~/path supplied to --incpath or --libpath
145 to /path under your home directory.
146 http://rt.cpan.org/Ticket/Display.html?id=29484
148 - the old dynaload code used Mach API functions to load dynamic
149 libraries on Mac OS X. These APIs have been deprecated in OS X
150 10.5 and were causing some build problems.
151 So henceforth Imager uses the dlopen() family of functions, and you
152 will need version 10.3 or later of OS X.
154 - added the det() function to the transform2() engine.
155 added the sample quad_to_square.pl
156 Courtesy Richard Fairhurst.
157 http://rt.cpan.org/Ticket/Display.html?id=31244
161 - samples/gifscale.pl sourced the base value for gif_top from
163 Thanks to Eleneldil G. Arilou for pointing this out.
165 - t/t82inline.t no longer loads B at runtime, to work around a bug
166 in some 5.005_0[45] installations.
167 http://rt.cpan.org/Ticket/Display.html?id=30508
169 - work around Module::Depends::Intrusive bug #21229
170 http://rt.cpan.org/Ticket/Display.html?id=30520
172 - the hardinvert filter no-longer inverts the alpha channel.
173 http://rt.cpan.org/Ticket/Display.html?id=30002
175 - the hardinvert filter now supports large samples
177 Imager 0.61_02 - 28 November 2007
180 - major TIFF support re-work
181 http://rt.cpan.org/Ticket/Display.html?id=20329
183 - added a C level image interface for accessing samples from 1-32
184 bits, exposed this at the perl level in getsamples()
186 - the conv filter now works at floating point precision for high bit
189 - added is_bilevel method to test whether an image should be written as
190 a bilevel image if the image format supports it.
192 - added -log-stderr as an Imager import list option
194 - added some important types to Imager::APIRef
196 - added test_image_double() to Imager::Test
200 - Imager::Fountain couldn't read GIMP gradient files with 10 or more
203 - the scale() method with qtype mixing now handles images with an
204 alpha channel correctly.
206 - fixed a broken link from the "animated GIF" entry in the concept index.
207 Thanks to Slaven Rezic.
208 http://rt.cpan.org/Ticket/Display.html?id=30889
210 - on some perl's the infix expression parser test would fail due to
211 actions in the grammar returning false. Made sure all actions return
213 Thanks to Richard Fairhurst for spending a lot of time in tracking
215 http://rt.cpan.org/Public/Bug/Display.html?id=29562
217 Imager 0.61 - 5 November 2007
220 - added samples/gifscale.pl, which adjusts the screen size/position tags
221 when scaling an animated gif
222 http://rt.cpan.org/Ticket/Display.html?id=27591
226 - correct handling of sz in matrix_transform() - this should allow
227 perspective type transformations to work now.
228 http://rt.cpan.org/Ticket/Display.html?id=29936
230 - prevent a cast to integer warning on x64 builds in datatypes.c
231 also fixed some other type warnings
232 https://rt.cpan.org/Ticket/Display.html?id=30204
234 - some sub-directory tests depended on files produced by the parent
236 http://rt.cpan.org/Ticket/Display.html?id=30203
238 - Imager::Font::Wrap doesn't correctly set savepos
239 thanks to Nikita Dedik and Eleneldil G. Arilou for reporting this.
240 http://rt.cpan.org/Ticket/Display.html?id=29771
242 - test 171 in t/t01introvert.t was failing on perls configured to
244 http://rt.cpan.org/Ticket/Display.html?id=29413
246 - the code for the transform2() uminus operator was missing a break.
247 Added tests for better code coverage of the ops.
248 http://rt.cpan.org/Ticket/Display.html?id=29296
250 - the SGI RLE compression code could overflow its compression buffer
251 http://rt.cpan.org/Ticket/Display.html?id=30334
253 - the 32-bit output function used by the SGI code only handled values
254 under 0x10000. This was most noticable when writing large RLE images.
255 http://rt.cpan.org/Ticket/Display.html?id=30335
257 - validate chan_count for chans == NULL for each of the i_gsamp()
259 http://rt.cpan.org/Ticket/Display.html?id=28985
261 - attempt to work around the test failure at
262 http://www.nntp.perl.org/group/perl.cpan.testers/2007/09/msg650810.html
263 http://rt.cpan.org/Ticket/Display.html?id=29562
265 - improve the error messages produced when attempting to read or write
266 an unknown image file format.
267 http://rt.cpan.org/Ticket/Display.html?id=30103
269 - improve the transform2() documentation
270 http://rt.cpan.org/Ticket/Display.html?id=29267
272 - correctly generate the author key in META.yml
273 http://rt.cpan.org/Ticket/Display.html?id=30377
275 - correctly blend a rotated (or matrix_transformed()) image when
276 performing interpolation in the presence of an alpha channel.
277 Also corrected the centring of the rotated image on the output
280 Imager 0.60 - 30 August 2007
283 - Finished/rewrote Arnar's old SGI RGB file format support, so Imager
284 now has full SGI RGB image format, including RLE and 16-bit/sample
286 https://rt.cpan.org/Ticket/Display.html?id=8666
288 - logging functions are now available in the API
290 - applied Gabriel Vasseur's patch
291 added documentation, further tests, and support for greyscale images
292 Obviously problems are my fault :)
293 https://rt.cpan.org/Ticket/Display.html?id=28142
295 - the mask for ICO/CUR images is now applied as an alpha channel to
296 the returned image. For the old behaviour, supply ico_masked => 0
297 to read() or read_multi(). This should be less confusing when
298 using Imager as a general image processor.
299 https://rt.cpan.org/Ticket/Display.html?id=29001
303 - in some cases it's possible for giflib/libungif to return color
304 indexes outside the range of colors defined by the image's palette.
305 We now expand the palette to match the indexes used.
306 Thanks to Gabriel Vasseur for reporting this.
308 - fixed various memory leaks that could occur when failing to read png,
309 jpeg, bmp or tga files.
311 - to avoid confusion, channels not present in the image are returned as
312 zero by getscanline(). This has no effect on the C level i_glin()
313 and i_glinf() API functions which continue to not set the unused
316 - the convert() method now returns an image of the same sample size as
318 https://rt.cpan.org/Ticket/Display.html?id=28492
320 - remove repeated text in Imager::Files
321 http://rt.cpan.org/Ticket/Display.html?id=27589
323 - be even more explicit that scale() and friends don't modify the source
324 image, but return a new image.
325 http://rt.cpan.org/Ticket/Display.html?id=28570
327 - improve the error message from errstr() when you try to load a font
328 for which the driver hasn't been built in Imager.
329 http://rt.cpan.org/Ticket/Display.html?id=27571
331 - transparency is now enabled by default when writing GIF images
332 http://rt.cpan.org/Ticket/Display.html?id=27615
334 - Imager would not load on Windows 98
335 http://rt.cpan.org/Ticket/Display.html?id=27653
337 Imager 0.59 - 14 June 2007
342 - fixes a regression introduced by the fixes for RT 11972
343 http://rt.cpan.org/Ticket/Display.html?id=27546
345 - cropping outside the image would return an Imager object with
346 no low-level image object, instead of returning false.
347 Fixed by: Philip Gwyn (Leolo)
348 http://rt.cpan.org/Ticket/Display.html?id=27509
350 Imager 0.58 - 16 May 2007
353 No significant changes from 0.57_01.
355 Imager 0.57_01 - 11 May 2007
358 - added to_rgb16 to produce a 16-bit/sample version of an image
360 - improve freetype 1.x text output efficiency
364 - search another place for rgb.txt, and check all the places
365 Imager::Color checks when deciding whether to skip testing it
366 http://rt.cpan.org/Ticket/Display.html?id=26064
368 - use a convolution kernel size based on the stddev rather than a
369 fixed size when performing a gaussian blur
370 http://rt.cpan.org/Ticket/Display.html?id=25645
372 - document the difference() method's mindist parameter, and debug it.
374 - put the Imager release number in the Inline::C generated code to
375 regenerate Inline code when a new release of Imager is installed.
376 http://rt.cpan.org/Ticket/Display.html?id=26278
378 - fix rendering on alpha channel images for the FreeType 1.x driver.
379 http://rt.cpan.org/Ticket/Display.html?id=11972
381 - fix rendering on alpha channel images for the T1lib driver.
382 http://rt.cpan.org/Ticket/Display.html?id=11972
384 - reworked library probing, we can now set more than one probe
385 function for a library. Disabled the default (non-freetype-config)
386 library probe and added an extra probe function that searches for
387 both ft2build.h and whatever it includes, and adds -I as needed.
388 Hopefully this will fix build problems like
389 http://www.nntp.perl.org/group/perl.cpan.testers/2007/05/msg472281.html
390 http://rt.cpan.org/Ticket/Display.html?id=26086
392 Imager 0.57 - 30 Apr 2007
395 This is a maintenence release fixing a security issue in Imager.
397 - CRITICAL: a specially crafted compressed BMP file can cause a buffer
398 overflow in malloced memory. There will be further discussion of
399 this issue in the ticket below.
400 http://rt.cpan.org/Ticket/Display.html?id=26811
401 CVE-2007-2459 CVE-2007-2413
402 The descriptions at cve.mitre.org varied in quality, please see the
403 ticket at rt.cpan.org for a more accurate description of the issue.
405 Imager 0.56 - 1 Apr 2007
408 - added support for reading 16-bit/sample PGM/PPM images
410 - added support for writing 16-bit/sample PGM/PPM images
412 - improved performance of reading PBM/PGM/PPM images
414 - added support for writing PBM images if the image is paletted and
415 contains only black and white
417 - added a new make_colors value - "mono"
419 - switched from the svn log Changes to a manual Changes to reduce
422 - new sample code - samples/flasher.pl
426 - CRITICAL: the "Imager" typemap entry (not used by Imager itself)
427 was returning an image object with an extra reference, this
428 resulted in a memory leak.
429 http://rt.cpan.org/Ticket/Display.html?id=24992
431 - fix rendering on alpha channel images for the FreeType 2.x driver
432 http://rt.cpan.org/Ticket/Display.html?id=11972
434 - reading bmp files now consitently handles short reads. You can now
435 supply a parameter to treat a short read as successful and set
437 http://rt.cpan.org/Ticket/Display.html?id=8426
439 - previously, reading ASCII PBM files required spaces between samples,
440 even though the format doesn't require that
442 - improved documentation of the unsharpmask filter (I hope)
443 http://rt.cpan.org/Ticket/Display.html?id=25531
445 - force flushing of the output from i_tt_dump_names() and test output
446 in t/t35ttfont.t to prevent output from being mixed up.
447 https://rt.cpan.org/Ticket/Display.html?id=24859
449 - rewrite a conditional expression as an if() to hopefully work around
450 a bug in the pre-4.0 GCC Apple shipped with OS X 10.4.
451 https://rt.cpan.org/Ticket/Display.html?id=25561
453 - avoid Data::Dumper in regops.perl to support older releases of perl
454 https://rt.cpan.org/Ticket/Display.html?id=24391
456 Imager 0.55 - 16 Dec 2006
459 This is primarily a bug fix release.
461 Note: Test::More is now a pre-requisite for Imager and is no longer bundled.
463 There is one new feature:
465 - the Win32 font driver now supports UTF8 (RT 22166)
466 http://www.cpanforum.com/threads/3276
467 http://rt.cpan.org/Ticket/Display.html?id=22166
469 Several bugs were fixed:
471 - the string() method would not output the string "0"
472 http://rt.cpan.org/Public/Bug/Display.html?id=21770
474 - fills.c was failing to compile on Solaris 10 (compiler unknown)
475 http://rt.cpan.org/Public/Bug/Display.html?id=21944
477 - the gif_disposal and gif_user_input tags weren't being read from
479 http://rt.cpan.org/Public/Bug/Display.html?id=22192
481 - gif.c was failing to build under MSVC
482 http://rt.cpan.org/Ticket/Display.html?id=23922
484 - in some cases strings passed to the string() method were treated as
485 terminated by NUL (chr 0)
486 http://rt.cpan.org/Public/Bug/Display.html?id=21770
488 - on "MSWin32" perl builds we now link to -lzlib instead of -lz since
489 that's the default build name for zlib on Win32.
490 http://rt.cpan.org/Ticket/Display.html?id=23064
492 - search $Config{incpath} for headers too, which we should have been
495 Win32 font driver fixes:
497 - the global descent value from bounding box was the wrong sign
498 http://www.cpanforum.com/threads/3276
500 - if the first or last glyph overflowed the left or right side of the
501 advance width they would be clipped
504 Imager 0.54 - 14 Sep 2006
507 This is primarily a feature release:
509 - a new qtype value 'mixing' has been added to the scale()
510 method. This is faster than 'normal', slower than 'preview'. This
511 is based on the method used by pnmscale, and seems to produce less
512 blurry results than normal.
513 http://rt.cpan.org/Public/Bug/Display.html?id=20677
515 - the rubthrough() method can now render onto images with an alpha
517 http://rt.cpan.org/Ticket/Display.html?id=20678
519 - the read_multi() method now falls back to calling doing a single
520 image read via the read() method and write_multi() will now fall
521 back to calling write() if a single image is supplied. This means
522 you can simply call the read_multi() or write_multi() functions
523 without having to check if the type is formatted by that method.
524 http://rt.cpan.org/Ticket/Display.html?id=19457
525 http://rt.cpan.org/Ticket/Display.html?id=19458
527 - the GIF loop extension can now be written. If you don't have
528 libungif/giflib 4.1.4 (or some distribution's bugfixed equivalent) you
530 http://rt.cpan.org/Ticket/Display.html?id=21185
532 - getscanline() and setscanline() can now read/write palette index
533 based data from/to the image for paletted images, by setting type to
535 http://rt.cpan.org/Ticket/Display.html?id=20338
537 - we no longer hassle you to disable GIF support
538 http://rt.cpan.org/Ticket/Display.html?id=20687
540 - minor documentation fixes
543 Imager 0.53 - 26 Jul 2006
546 This is a bugfix release.
548 Some test code was left in a code path not covered by the test
549 suite. A test was added to cover this code path and the test code was
551 http://rt.cpan.org/Public/Bug/Display.html?id=20705
554 Imager 0.52 - 25 Jul 2006
557 This is primarily a feature release, but contains a fair few bug
560 - ability to read and write MS Windows ICO and CUR files
562 - you can now add file format plugins to support new file formats
564 - add POD coverage tests
566 - setcolors() and addcolors() now accept color names and so on
567 instead of requiring Imager::Color objects.
568 http://rt.cpan.org/Ticket/Display.html?id=20056
570 - flood_fill() can now fill to a specified border color instead of
571 just to the area the same color as the seed.
572 http://rt.cpan.org/Ticket/Display.html?id=19618
577 - bounding_box for the T1 driver wasn't converting UTF8 to ascii when
578 calculating the advance width.
579 http://rt.cpan.org/Public/Bug/Display.html?id=20554
581 - bounding_box for the T1 driver wasn't including leading and
582 trailing spaces in the bounding box as the other drivers did, it also
583 produced strange results for empty strings or strings containing only
586 - when reading CMYK jpeg images they were being transferred to the
587 image object as is, producing a four channel image. It only looked ok
588 due to an old still unfixed Photoshop bug. We now convert from the
589 inverted CMYK that photoshop (and Corel for example) produce into RGB.
590 http://rt.cpan.org/Ticket/Display.html?id=20416
592 - reading a CYMK TIFF would result in a 4 channel image, reading any
593 image with more than 4 channels (eg. RGB with 2 alpha channels) would
595 http://rt.cpan.org/Ticket/Display.html?id=20415
597 - added /usr/local/include to the default include search path, since
598 we were already searching /usr/local/lib for libraries.
600 And various minor fixes and documentation updates.
603 Imager 0.51 - 23 Apr 2006
606 - fix a validation bug when processing JPEG EXIF data that can cause
608 http://rt.cpan.org/Public/Bug/Display.html?id=18496
610 - fix mis-processing of the src_maxx and src_maxy parameters of the
612 http://rt.cpan.org/Public/Bug/Display.html?id=18712
614 - fix a problem in Imager's "smart" handling of the color parameter
616 http://rt.cpan.org/Public/Bug/Display.html?id=18561
619 Imager 0.50 - 29 Mar 2006
622 - CRITICAL: fixes a segmentation fault from attempting to write a 2
623 or 4 channel image to jpeg or a 2 channel image to tga where the
624 output is an in-memeory buffer.
625 http://rt.cpan.org/Public/Bug/Display.html?id=18397
627 - fixes an incorrect pointer parameter in the PNG code
628 http://rt.cpan.org/Public/Bug/Display.html?id=18051
630 - skip Inline::C tests when building in a directory with spaces
631 http://rt.cpan.org/Public/Bug/Display.html?id=18049