Reorganize generated code and hand-write linear conversion

Author: BuildTools

codegen/src/lut.rs

@@ -1,15 +1,17 @@
 //! The Adobe RGB (1998) standard.
 
 use crate::{
+    encoding::{
+        lut::{self, adobe::*},
+        FromLinear, IntoLinear,
+    },
     luma::LumaStandard,
     num::{Powf, Real},
     rgb::{Primaries, RgbSpace, RgbStandard},
     white_point::{Any, D65},
     Mat3, Yxy,
 };
 
-use super::{FromLinear, IntoLinear};
-
 /// The Adobe RGB (1998) (a.k.a. opRGB) color space and standard.
 ///
 /// This color space was designed to encompass most colors achievable by CMYK
@@ -115,6 +117,34 @@ where
     }
 }
 
+impl IntoLinear<f32, u8> for AdobeRgb {
+    #[inline]
+    fn into_linear(encoded: u8) -> f32 {
+        ADOBE_RGB_U8_TO_F32[encoded as usize]
+    }
+}
+
+impl FromLinear<f32, u8> for AdobeRgb {
+    #[inline]
+    fn from_linear(linear: f32) -> u8 {
+        lut::linear_f32_to_encoded_u8(linear, ADOBE_RGB_MIN_FLOAT, &TO_ADOBE_RGB_U8)
+    }
+}
+
+impl IntoLinear<f64, u8> for AdobeRgb {
+    #[inline]
+    fn into_linear(encoded: u8) -> f64 {
+        ADOBE_RGB_U8_TO_F64[encoded as usize]
+    }
+}
+
+impl FromLinear<f64, u8> for AdobeRgb {
+    #[inline]
+    fn from_linear(linear: f64) -> u8 {
+        <AdobeRgb>::from_linear(linear as f32)
+    }
+}
+
 #[cfg(test)]
 mod test {
     #[cfg(feature = "approx")]

palette/src/encoding/adobe.rs

@@ -1,5 +1,7 @@
 mod codegen;
 
+pub use crate::encoding::lut::codegen::*;
+
 const MAX_FLOAT_BITS: u32 = 0x3f7fffff; // 1.0 - f32::EPSILON
 
 // SAFETY: Only use this macro if `input` is clamped between `min_float` and `max_float`.
@@ -33,7 +35,7 @@ macro_rules! unsafe_linear_float_to_encoded_uint {
 }
 
 #[inline]
-fn linear_f32_to_encoded_u8(linear: f32, min_float_bits: u32, table: &[u32]) -> u8 {
+pub fn linear_f32_to_encoded_u8(linear: f32, min_float_bits: u32, table: &[u32]) -> u8 {
     let min_float = f32::from_bits(min_float_bits);
     let max_float = f32::from_bits(MAX_FLOAT_BITS);
 
@@ -49,7 +51,7 @@ fn linear_f32_to_encoded_u8(linear: f32, min_float_bits: u32, table: &[u32]) ->
 
 #[cfg(feature = "gamma_lut_u16")]
 #[inline]
-fn linear_f32_to_encoded_u16_with_linear_scale(
+pub fn linear_f32_to_encoded_u16_with_linear_scale(
     linear: f32,
     linear_scale: f32,
     min_float_bits: u32,