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Parallel loading (#136)

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* Parallel loading

* Avoid vec allocation per pixel
This commit is contained in:
Kornel 2018-09-15 22:30:53 +01:00 committed by Josh Holmer
parent df07d10a5c
commit 72393d06c9
1 changed files with 17 additions and 6 deletions
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23
src/lib.rs
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@ -687,8 +687,15 @@ fn optimize_png(png: &mut PngData, original_data: &[u8], opts: &Options) -> PngR
}
}
let old_png = image::load_from_memory_with_format(original_data, ImageFormat::PNG);
let new_png = image::load_from_memory_with_format(&output, ImageFormat::PNG);
let (old_png, new_png) = {
let old_png = || image::load_from_memory_with_format(original_data, ImageFormat::PNG);
let new_png = || image::load_from_memory_with_format(&output, ImageFormat::PNG);
#[cfg(feature = "parallel")]
let res = rayon::join(old_png, new_png);
#[cfg(not(feature = "parallel"))]
let res = (old_png(), new_png());
res
};
if let Ok(new_png) = new_png {
if let Ok(old_png) = old_png {
@ -898,11 +905,15 @@ fn copy_permissions(input_path: &Path, out_file: &File, verbosity: Option<u8>) {
fn images_equal(old_png: &DynamicImage, new_png: &DynamicImage) -> bool {
let a = old_png
.pixels()
.map(|x| x.2.channels().to_owned())
.filter(|p| !(p.len() == 4 && p[3] == 0));
.filter(|x| {
let p = x.2.channels();
!(p.len() == 4 && p[3] == 0)
});
let b = new_png
.pixels()
.map(|x| x.2.channels().to_owned())
.filter(|p| !(p.len() == 4 && p[3] == 0));
.filter(|x| {
let p = x.2.channels();
!(p.len() == 4 && p[3] == 0)
});
a.eq(b)
}