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Version 1.88 1.Jul.2015
* Fix bug where long comments were read incorrectly. Reported by
kazarny.
* Add --no-ignore-errors option.
Version 1.87 9.Dec.2014
* Always optimize as if the background is transparent. This fixes some
rare bugs reported by Lars Dieckow.
* Fix --crop issue with must-be-preserved frames that are out of the
crop window.
Version 1.86 14.Oct.2014
* Further fix --rotate + --crop.
Version 1.85 14.Oct.2014
* Greatly improve optimization time for images with many colors.
* Add --no-extensions (with the s) and document those options more.
* Fix bug in interaction of --resize and --rotate reported by Michał
Ziemba.
Version 1.84 29.Jun.2014
* Correct optimizer bug that affected GIFs with 65535 or more total
colors. Reported by Jernej Simončič.
Version 1.83 21.Apr.2014
* Correct bug in custom gamma values reported by Kornel Lesiński.
* Update Windows build.
Version 1.82 27.Mar.2014
* Correct bug in `mix` sampling method reported by Bryan Stillwell.
Version 1.81 24.Mar.2014
* Correct bug in `mix` sampling method reported by Bryan Stillwell.
Version 1.80 18.Mar.2014
* Bug fixes and improved error messages.
Version 1.79 17.Mar.2014
* Major improvements in image scaling. Work sponsored by Tumblr via
Mike Hurwitz.
** Add new resize sampling methods `mix`, `box`, `catrom`, `mitchell`,
`lanczos2`, and `lanczos3`, selectable by `--resize-method`. The
`catrom` filter often gives good results; the slightly faster `mix`
method (a bilinear interpolator) is now the default. These new
sampling methods consider all of the image's input colors when
shrinking the image, producing better, less noisy output for most
images.
** Add `--resize-colors`, which allows Gifsicle to enlarge the palette
when resizing images. This is particularly important when shrinking
images with small colormaps---e.g., shrinking a black-and-white
image should probably introduce shades of gray.
* Support extensions such as XMP4 in which extension packet boundaries
matter. Reported by `ata4`.
* Many bug fixes, especially to cropping. Thanks to Tumblr and to
Bryan Stillwell, Tal Lev-Ami, "Marco," and others.
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Problems found with existing digests:
Package fotoxx distfile fotoxx-14.03.1.tar.gz
ac2033f87de2c23941261f7c50160cddf872c110 [recorded]
118e98a8cc0414676b3c4d37b8df407c28a1407c [calculated]
Package ploticus-examples distfile ploticus-2.00/plnode200.tar.gz
34274a03d0c41fae5690633663e3d4114b9d7a6d [recorded]
da39a3ee5e6b4b0d3255bfef95601890afd80709 [calculated]
Problems found locating distfiles:
Package AfterShotPro: missing distfile AfterShotPro-1.1.0.30/AfterShotPro_i386.deb
Package pgraf: missing distfile pgraf-20010131.tar.gz
Package qvplay: missing distfile qvplay-0.95.tar.gz
Otherwise, existing SHA1 digests verified and found to be the same on
the machine holding the existing distfiles (morden). All existing
SHA1 digests retained for now as an audit trail.
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* Correct an optimization bug introduced in 1.76. Reported by Tom
Roostan.
* Major improvements to color selection (important when reducing
colormap size). Use gamma-corrected colors in selection and
dithering; this makes image quality much better. Also, when reducing
colors with dithering, prefer to select colors that dithering can't
approximate.
* Add ordered dithering modes, which avoid animation artifacts. The
default ordered dithering mode (`--dither=ordered`) is a novel mode
that combines some of the visual advantages of error diffusion with
the artifact avoidance of ordered dithering.
* Add halftone dithering (`--dither=halftone`).
* gifview: Improved cache memory management for better animations.
Collect memory for old frames based on an explicit --memory-limit
(default 40MB).
* gifview: Add `--fallback-delay` option, to specify a fallback delay
for frames with delay 0. Thanks to Sung Pae.
* Fix `-O2` crashes introduced with `--resize` improvements. Reported
by Bryan Stillwell.
* Improve `--careful` (fewer crashes). Reported by Bryan Stillwell.
* Improve `-O2`: again, don't refuse to optimize images with local
color tables. Reported by Bryan Stillwell.
* Greatly improve `--dither` speed.
* Improve `--resize` behavior: avoid animation artifacts due to
different rounding decisions. Also speed it up. Reported by Bryan
Stillwell.
* Fix bug where `-O2` would refuse to optimize some images with local
color tables, claiming that "more than 256 colors were required".
What was really required is previous disposal. Reported by Bryan
Stillwell.
* Fix crash bugs on some combinations of `--crop` and `--resize`
(prevalent on images whose first frame didn't cover the whole
logical screen). Reported by Bryan Stillwell.
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* Avoid rounding errors in '--resize'.
* Report error when '-I' is combined with '-b'.
* Frame selections also apply in batch mode.
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Changes:
- DESCR has 80 culumns
- whitespace
1.37:
=====
- Fix bug where combining `--rotate-X' and `-O' options would cause a
segmentation fault. Reported by Dan Lasley <Dan_Lasley@hilton.com>.
- Rearrange source tree.
1.36:
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* Fix subscript-out-of-range error in main.c reported by Andrea Suatoni.
1.35:
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- Fixed bug where `--crop' could cause a segmentation fault, present since
1.32 or 1.33. Reported by Tom Schumm <phong@phong.org>.
1.34:
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- Fixed bug where combining `--crop' and `-O' options could corrupt output.
Reported by Tom Schumm <phong@phong.org>.
1.33:
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- Be more careful about time while animating. In particular, prepare frames
before they are needed, so that they can be displayed exactly when
required. Problem reported by Walter Harms <WHarms@bfs.de>.
- More warning fixes.
1.32:
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- Add `--multifile' option handling concatenated GIF files. This is useful
for scripts. For example, `gifsicle --multifile -' will merge all GIF
files written to its standard input into a single animation.
- More fixes for spurious background warnings.
1.31:
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- Changed behavior of `--crop X,Y+WIDTHxHEIGHT' option when WIDTH or HEIGHT
is negative. Previously, zero or negative WIDTH and HEIGHT referred to
the image's entire width or height. Thus, the option `--crop 10,0+0x0'
would always lead to an error, because the crop left position (10) plus
the crop width (the image width) was 10 pixels beyond the image edge. The
new behavior measures zero or negative WIDTH and HEIGHT relative to the
image's bottom-right corner.
- Changed background behavior. Hopefully the only user-visible effect will
be fewer spurious warnings.
- Fixed a bug that could corrupt output when optimizing images with `-O2'
that had more than 256 colors.
1.30:
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- Fixed bug in ungif code: Writing a large ungif could corrupt memory,
leading eventually to bad output. This bug has been present since
Gifsicle could write ungifs! Bad files and assistance provided by Jeff
Brown <jabrown@ipn.caida.org>.
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GIF animations.
Package provided by Ben Wong in pkg/13467.
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