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