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62 commits

Author SHA1 Message Date
andrews05
39b00910ae
Use stronger compression in eval (#509) 2023-07-08 18:54:58 -04:00
andrews05
b846a2e909
Try to pick tRNS value that's valid at low depth (#520) 2023-07-07 20:56:15 -04:00
andrews05
ea5f1884be
Refactor aux chunk handling (#505) 2023-05-21 15:34:23 -04:00
andrews05
d8b7ebaf47
Further small reduction improvements (#504) 2023-05-16 20:53:05 -04:00
andrews05
9a500941d8
Raw API (#482) 2023-05-15 08:37:49 -04:00
andrews05
2f622fc7bd
Minor reduction improvements (#502) 
* Fix bKGD conversion from gray to palette

* Allow grayscale reduction from 16 to 4 or less

* Refactor reduction evaluation sequence

* Separate palette into new file
 2023-05-07 17:46:58 -04:00
Andrew
d43e63f562 Remove test 167 which is no longer relevant 2023-01-06 15:35:05 -05:00
andrews05
a3b104a2ed
Faster reductions (#479) 
* Add grayscale depth tests and benches

* Don't include filter byte in PngImage.data

* Simplify reductions by not using scan lines

* Faster grayscale reduction

* Simplify reduce_color_type

* Faster depth reduction
 2022-12-22 16:56:36 -05:00
andrews05
2008d09915
Reduce alpha to tRNS (#477) 2022-12-13 15:18:19 -05:00
andrews05
131a3c6af7
🚀 Revamp alpha optimisation (#475) 2022-12-10 21:14:50 -05:00
andrews05
54ee621e41
Fix Grayscale depth reduction with tRNS (#470) 2022-12-08 06:11:26 -05:00
andrews05
bd5a0b526b
More Reductions (#468) 
* Add test for issue 195

* Reduce grayscale alpha to palette

* Black alpha before color type reductions
 2022-12-07 13:22:13 -05:00
Josh Holmer
06e3feeee1 Use separate file for issue_182 test 
Closes #412
 2021-07-11 23:10:57 -04:00
Felix Hanau
56b94542a6 Fix decoding interlaced images with height or width <= 2 (#175) 2019-06-27 13:44:34 -04:00
Josh Holmer
c60bd82da7 Add test case for #171 2019-06-20 14:07:47 -04:00
Josh Holmer
7bd7c0cfc9 Bump image crate to handle large images 
Closes #167 and #168
 2019-03-26 14:14:01 -04:00
Kornel
9af874d21b Make reductions return a new uncompressed image (#158) 
* Fix verbose message

* No cloning when restoring original data

* Make reductions return a new uncompressed image

Partially fixes #145

* Async reduction evaluator

* Assert

* Faster bit depth check

* Also try 4-bit depth for small-depth images

* Skip test when using miniz

* Ensure palette is trimmed after depth reduction

Fixes #159

* Fudge factor for reductions to prefer better reductions even if gzip estimation says otherwise
 2019-01-27 03:22:49 -05:00
Josh Holmer
7594ec632b Add test file 2018-12-01 22:32:29 -05:00
Joshua Holmer
041c433ccb Handle non-standard sBIT headers 
Closes #141
 2018-11-26 13:10:21 -05:00
Kornel
96eda85806 Identify and drop useless sRGB profiles (#143) 2018-11-13 14:37:02 -05:00
Joshua Holmer
87e738dda2 Fix incorrect detection of images that can reduce bit depth 
Closes #140
 2018-10-11 08:29:48 -04:00
Josh Holmer
bb1737928e Fix RGB to Indexed reduction if transparency pixel exists 
Closes #129
 2018-08-11 23:33:55 -04:00
Josh Holmer
71d0f6fa31 Fix more issues with alpha optim on interlaced images 
Closes #133
 2018-08-11 20:27:45 -04:00
Josh Holmer
7303b94afc Fix issue with alpha optim on interlaced images 
Closes #113
 2018-07-27 23:03:36 -04:00
Josh Holmer
4d81e23542 Fix the benchmarking script to not overwrite the test file 2018-01-19 18:29:41 -05:00
Josh Holmer
9de0eeaf51 Compare performance of oxipng vs optipng 
This adds a script to automate this process and add it to the README.
I'll just run it manually after a version release, for now.

Closes #81
 2018-01-18 13:58:05 -05:00
Josh Holmer
f8c62de6c0 Fix unfiltering of first scan line in each pass of an interlaced input file 
Closes #92
 2017-12-23 00:36:41 -05:00
Josh Holmer
4d62f9f7f9 Fix failure to optimize on certain grayscale images 
Closes #89
 2017-11-21 12:38:33 -05:00
Emiel Beinema
b417e2bde7 Return an error when an APNG header is encountered 2017-09-30 23:50:52 +02:00
Josh Holmer
e17f911334 Fix a bug in palette reduction at less than 8 bits per pixel 
Closes #82
 2017-09-11 18:27:28 -04:00
Josh Holmer
e3a26b77a4 Fix a bug in reducing palettes with a bit depth of two 
Closes #80
 2017-09-10 23:26:39 -04:00
Josh Holmer
f41ef551d3 Enable option for multiple alpha transformations 2017-07-26 00:37:55 -04:00
Josh Holmer
413f1aac7c Automatically change transparent pixels to black 2017-07-24 08:47:27 -04:00
Josh Holmer
d18850ebab Ignore color reductions that would increase file size 
Closes #61
 2017-03-08 10:11:13 -05:00
Josh Holmer
6c8e7d253d Verify images are correct before outputting them, and fix a bug in certain images 
Closes #60
 2017-03-06 20:16:28 -05:00
Josh Holmer
c79ba3ab8a Version 0.14.4 2017-02-26 22:53:23 -05:00
Josh Holmer
87810829ce Fix issues in transparency palette reduction and release version 0.14.3 2017-02-25 23:33:55 -05:00
Josh Holmer
44818a854b Fix two bugs in reducing palette and release version 0.14.2 2017-02-22 15:45:46 -05:00
Josh Holmer
2810316f4e Reduce certain headers when reducing color type 
Fixes #52
 2016-12-12 09:57:18 -05:00
Josh Holmer
6d49d7b8f9 Implement zopfli compression, available as a CLI flag (-Z) 
Improves compression by about 10% over DEFLATE, but takes a very long
time at the moment, so it is off by default.
 2016-12-01 12:51:30 -05:00
Joshua Holmer
2659776bd5 Fix issue for interlacing images smaller than 4px 
Fixes #42
 2016-05-25 23:10:44 -04:00
Joshua Holmer
ecc19ad5cd Fix bug where interlaced images with certain widths would fail to optimize 2016-05-13 22:11:45 -04:00
Toby Lawrence
2573b20966 Add support for optimizing PNGs loaded in-memory. 
In keeping with being able to use oxipng as a library, this adds a way
for developers to optimize a PNG already in memory, instead of requiring
  it to exist on disk first.
 2016-05-05 07:54:52 -04:00
Joshua Holmer
a4a5953786 Implement --fix to fix CRC errors in PNG block headers 
Closes #5
 2016-05-02 09:25:48 -04:00
Joshua Holmer
08eb44ec1a Partially implement --preserve 
Needs better implementation once stable Rust improves,
or perhaps see if there's a crate for this

Reference #4 but keep open
 2016-04-29 23:37:27 -04:00
Joshua Holmer
2e7bfa4ebc Add palette reduction 
Closes #11
 2016-04-13 23:16:32 -04:00
Joshua Holmer
c78e3213d6 Update crates and fix interlacing issue 2016-04-08 13:37:00 -04:00
Joshua Holmer
19bcc67668 Update changelog and remove one-time script [ci skip] 2016-04-04 16:12:37 -04:00
Joshua Holmer
1fc81ef683 Support interlaced files and allow conversion between interlaced and progressive files 
Closes #3
 2016-04-04 16:07:46 -04:00
Joshua Holmer
2974bbbee3 Fix issue with very small images [ci skip] 2016-04-04 11:06:00 -04:00