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author | metamuffin <metamuffin@disroot.org> | 2025-05-05 15:09:54 +0200 |
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committer | metamuffin <metamuffin@disroot.org> | 2025-05-05 15:09:54 +0200 |
commit | 306f96164784a8cbf405e72fa4364d6523366e95 (patch) | |
tree | 51717fc139871baa438aad806f4923669ae0896c /dhwt-codec/src/trim.rs | |
parent | 9cc089e2d6e841879e430b01d2f3d92c8820523e (diff) | |
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Diffstat (limited to 'dhwt-codec/src/trim.rs')
-rw-r--r-- | dhwt-codec/src/trim.rs | 36 |
1 files changed, 0 insertions, 36 deletions
diff --git a/dhwt-codec/src/trim.rs b/dhwt-codec/src/trim.rs deleted file mode 100644 index 85a920a..0000000 --- a/dhwt-codec/src/trim.rs +++ /dev/null @@ -1,36 +0,0 @@ -use crate::io::{Value, TWO, ZERO}; -use std::ops::{Index, IndexMut}; - -pub fn trim<X: Index<usize, Output = Value> + IndexMut<usize, Output = Value>>( - size: usize, - a: &mut X, -) { - let half = size / 2; - let quarter = size / 4; - for i in 0..(size / 2 / 4) { - let hi = half + i * 4; - let qi = quarter + i * 2; - a[qi] = (a[qi + 0] + a[qi + 1]) / TWO; - a[qi + 1] = (a[hi + 0] + a[hi + 1] + a[hi + 2] + a[hi + 3]) / (TWO * TWO); - } - for i in half..size { - a[i] = ZERO; - } -} - -pub fn untrim<X: Index<usize, Output = Value> + IndexMut<usize, Output = Value>>( - size: usize, - a: &mut X, -) { - let half = size / 2; - let quarter = size / 4; - for i in 0..(size / 2 / 4) { - let hi = half + i * 4; - let qi = quarter + i * 2; - a[hi + 0] = a[qi + 1]; - a[hi + 1] = a[qi + 1]; - a[hi + 2] = a[qi + 1]; - a[hi + 3] = a[qi + 1]; - a[qi + 1] = a[qi]; - } -} |