mirror of
https://github.com/GraphiteEditor/Graphite.git
synced 2026-09-19 10:58:04 +08:00
fd3613018a
* convert Tag into a trait * Create ARW 1 decoder * add decoder for sony tone curve table * create decoder for arw 2.1 format * add windsock.arw to the tests * create derive macro for Tag and use it in decoders * add license to tag-derive * add code to identify model * impl Display for Ifd * Code review * Fix type variable name * Fix compilation --------- Co-authored-by: Keavon Chambers <keavon@keavon.com>
31 lines
621 B
Rust
31 lines
621 B
Rust
pub struct Rational<T> {
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pub numerator: T,
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pub denominator: T,
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}
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pub struct CurveLookupTable {
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table: Vec<u16>,
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}
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impl CurveLookupTable {
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pub fn from_sony_tone_table(values: [u16; 4]) -> CurveLookupTable {
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let mut sony_curve = [0, 0, 0, 0, 0, 4095];
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for i in 0..4 {
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sony_curve[i + 1] = values[i] >> 2 & 0xfff;
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}
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let mut table = vec![0_u16; (sony_curve[5] + 1).into()];
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for i in 0..5 {
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for j in (sony_curve[i] + 1)..=sony_curve[i + 1] {
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table[j as usize] = table[(j - 1) as usize] + (1 << i);
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}
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}
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CurveLookupTable { table }
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}
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pub fn get(&self, x: usize) -> u16 {
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self.table[x]
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}
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}
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