danvics/oxipng
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28 commits

Author SHA1 Message Date
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
c97572be3e
ColorType Refactor (#500) 
* Refactor ColorType
Move transparency and palette data into the ColorType

* Fixup tests

* Make more use of helper functions

* Change BitDepth to u8 representation with TryFrom

* Fix clippy lints

* Don't use unstable language features

* Restore documentation on transparency/palette
 2023-04-27 19:49:54 -04:00
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
6022fc2aa1
Refactor use_heuristics for fast filter evaluation (#463) 2022-12-02 05:34:38 -05:00
andrews05
420d904ba9
Strengthen alpha reductions (#460) 
* Improve up and left alpha reductions

* Disable alpha down and right by default

* Improve performance of up
 2022-11-01 19:13:24 -04:00
andrews05
a02d4ff0dd
Fix directional alpha reductions (#458) 
* Fix alpha up and down

* Fix alpha left and right
 2022-10-28 19:41:44 -04:00
Kornel
17212477c5 Avoid asserts panicking on broken files 2021-01-20 14:33:27 -05:00
Josh Holmer
0d9c23f4ce Fix new clippy lints from Rust 1.47 2020-10-09 20:20:52 -04:00
Josh Holmer
43735086d1 Migrate to Github Actions 
Closes #206
 2020-04-15 13:26:28 -04:00
Ingvar Stepanyan
878bbedb37
Improve performance consistency (#202) 
* Improve performance consistency

Switch from HashMap / HashSet to IndexMap / IndexSet for consistent iteration order of various options and, as a result, more predictable performance.
 2020-03-31 21:54:05 -04:00
Kornel
681089f8c7
Remove the concept of size bias (#199) 
Closes #198
 2020-03-31 19:28:22 -04:00
Josh Holmer
0e3c0b922d Enable more clippy lints and fix some clippy issues 2020-01-19 05:22:14 -05:00
Daniel Wong
4cb26d462e Allow disabling all alpha optimizations (#181) 
Fixes a bug where oxipng would crash if alpha optimizations were all disabled.
 2019-07-23 14:21:46 -04:00
Kamal Ahmad
34ee78dbbc Preallocate memory in reduced_alpha_to_up (#180) 2019-06-27 13:44:49 -04:00
Josh Holmer
d86bc80f43 Prepare for next release 2019-02-01 17:27:03 -05:00
Kornel
dad6230cf1 Check timeout more often during compression (#160) 2019-02-01 16:30:47 -05:00
Kornel
33890cf0fd Fake Rayon (#162) 
Dummy implementation of Rayon's traits to avoid `#[cfg()]` and duplicated non-parallel code.
 2019-01-28 13:35:42 -05:00
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
Kornel
55d85df9fc Non-self-mutable reductions (#154) 
* Move reductions to a module. Make copy instead of changing in-place.

* Alpha reductions

* Immutable color reductions

* Immutable interlace reductions
 2019-01-12 05:07:57 -05:00
Josh Holmer
918c52eed8 Fix more nonstandard sBIT headers 
Closes #153
 2018-12-02 00:13:30 -05:00
Joshua Holmer
041c433ccb Handle non-standard sBIT headers 
Closes #141
 2018-11-26 13:10:21 -05:00
Kornel
3c466df80e Chunk name as 4 bytes (#135) 2018-09-16 16:09:55 -04:00
Josh Holmer
f862a0df24 Apply clippy fixes 2018-07-28 16:51:54 -04:00
Kornel
76a2e51c15 Reduce allocations (#122) 
* Iterate with fewer temp allocations

* Avoid allocation when not reducing

* Avoid slow modulo
 2018-07-20 18:40:51 -04:00
Josh Holmer
ece85e6d15 Refactoring of internal code into smaller chunks. 
There is still more to be done.
 2018-01-30 09:35:03 -05:00