moxcms/conversions/
transform_lut3_to_4.rs

1/*
2 * // Copyright (c) Radzivon Bartoshyk 3/2025. All rights reserved.
3 * //
4 * // Redistribution and use in source and binary forms, with or without modification,
5 * // are permitted provided that the following conditions are met:
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7 * // 1.  Redistributions of source code must retain the above copyright notice, this
8 * // list of conditions and the following disclaimer.
9 * //
10 * // 2.  Redistributions in binary form must reproduce the above copyright notice,
11 * // this list of conditions and the following disclaimer in the documentation
12 * // and/or other materials provided with the distribution.
13 * //
14 * // 3.  Neither the name of the copyright holder nor the names of its
15 * // contributors may be used to endorse or promote products derived from
16 * // this software without specific prior written permission.
17 * //
18 * // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19 * // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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27 * // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29#![cfg(feature = "lut")]
30use crate::conversions::LutBarycentricReduction;
31use crate::conversions::interpolator::{BarycentricWeight, MultidimensionalInterpolation};
32use crate::transform::PointeeSizeExpressible;
33use crate::{
34    BarycentricWeightScale, CmsError, DataColorSpace, InterpolationMethod, Layout,
35    TransformExecutor, TransformOptions,
36};
37use num_traits::AsPrimitive;
38use std::marker::PhantomData;
39use std::sync::Arc;
40
41pub(crate) struct TransformLut3x4<
42    T,
43    U: AsPrimitive<usize>,
44    const LAYOUT: u8,
45    const GRID_SIZE: usize,
46    const BIT_DEPTH: usize,
47    const BINS: usize,
48    const BARYCENTRIC_BINS: usize,
49> {
50    pub(crate) lut: Vec<f32>,
51    pub(crate) _phantom: PhantomData<T>,
52    pub(crate) _phantom1: PhantomData<U>,
53    pub(crate) interpolation_method: InterpolationMethod,
54    pub(crate) weights: Box<[BarycentricWeight<f32>; BINS]>,
55    pub(crate) color_space: DataColorSpace,
56    pub(crate) is_linear: bool,
57}
58
59impl<
60    T: Copy + AsPrimitive<f32> + Default + PointeeSizeExpressible,
61    U: AsPrimitive<usize>,
62    const LAYOUT: u8,
63    const GRID_SIZE: usize,
64    const BIT_DEPTH: usize,
65    const BINS: usize,
66    const BARYCENTRIC_BINS: usize,
67> TransformLut3x4<T, U, LAYOUT, GRID_SIZE, BIT_DEPTH, BINS, BARYCENTRIC_BINS>
68where
69    f32: AsPrimitive<T>,
70    u32: AsPrimitive<T>,
71    (): LutBarycentricReduction<T, U>,
72{
73    #[inline(never)]
74    fn transform_chunk(
75        &self,
76        src: &[T],
77        dst: &mut [T],
78        interpolator: Box<dyn MultidimensionalInterpolation + Send + Sync>,
79    ) {
80        let cn = Layout::from(LAYOUT);
81        let channels = cn.channels();
82
83        let value_scale = ((1 << BIT_DEPTH) - 1) as f32;
84
85        for (src, dst) in src.chunks_exact(channels).zip(dst.chunks_exact_mut(4)) {
86            let x = <() as LutBarycentricReduction<T, U>>::reduce::<BIT_DEPTH, BARYCENTRIC_BINS>(
87                src[cn.r_i()],
88            );
89            let y = <() as LutBarycentricReduction<T, U>>::reduce::<BIT_DEPTH, BARYCENTRIC_BINS>(
90                src[cn.g_i()],
91            );
92            let z = <() as LutBarycentricReduction<T, U>>::reduce::<BIT_DEPTH, BARYCENTRIC_BINS>(
93                src[cn.b_i()],
94            );
95
96            let v = interpolator.inter4(
97                &self.lut,
98                &self.weights[x.as_()],
99                &self.weights[y.as_()],
100                &self.weights[z.as_()],
101            );
102            if T::FINITE {
103                let r = v * value_scale + 0.5;
104                dst[0] = r.v[0].min(value_scale).max(0.).as_();
105                dst[1] = r.v[1].min(value_scale).max(0.).as_();
106                dst[2] = r.v[2].min(value_scale).max(0.).as_();
107                dst[3] = r.v[3].min(value_scale).max(0.).as_();
108            } else {
109                dst[0] = v.v[0].as_();
110                dst[1] = v.v[1].as_();
111                dst[2] = v.v[2].as_();
112                dst[3] = v.v[3].as_();
113            }
114        }
115    }
116}
117
118impl<
119    T: Copy + AsPrimitive<f32> + Default + PointeeSizeExpressible,
120    U: AsPrimitive<usize>,
121    const LAYOUT: u8,
122    const GRID_SIZE: usize,
123    const BIT_DEPTH: usize,
124    const BINS: usize,
125    const BARYCENTRIC_BINS: usize,
126> TransformExecutor<T>
127    for TransformLut3x4<T, U, LAYOUT, GRID_SIZE, BIT_DEPTH, BINS, BARYCENTRIC_BINS>
128where
129    f32: AsPrimitive<T>,
130    u32: AsPrimitive<T>,
131    (): LutBarycentricReduction<T, U>,
132{
133    fn transform(&self, src: &[T], dst: &mut [T]) -> Result<(), CmsError> {
134        let cn = Layout::from(LAYOUT);
135        let channels = cn.channels();
136        if src.len() % channels != 0 {
137            return Err(CmsError::LaneMultipleOfChannels);
138        }
139        if dst.len() % 4 != 0 {
140            return Err(CmsError::LaneMultipleOfChannels);
141        }
142        let src_chunks = src.len() / channels;
143        let dst_chunks = dst.len() / 4;
144        if src_chunks != dst_chunks {
145            return Err(CmsError::LaneSizeMismatch);
146        }
147
148        if self.color_space == DataColorSpace::Lab
149            || (self.is_linear && self.color_space == DataColorSpace::Rgb)
150            || self.color_space == DataColorSpace::Xyz
151        {
152            use crate::conversions::interpolator::Trilinear;
153            self.transform_chunk(src, dst, Box::new(Trilinear::<GRID_SIZE> {}));
154        } else {
155            match self.interpolation_method {
156                #[cfg(feature = "options")]
157                InterpolationMethod::Tetrahedral => {
158                    use crate::conversions::interpolator::Tetrahedral;
159                    self.transform_chunk(src, dst, Box::new(Tetrahedral::<GRID_SIZE> {}));
160                }
161                #[cfg(feature = "options")]
162                InterpolationMethod::Pyramid => {
163                    use crate::conversions::interpolator::Pyramidal;
164                    self.transform_chunk(src, dst, Box::new(Pyramidal::<GRID_SIZE> {}));
165                }
166                #[cfg(feature = "options")]
167                InterpolationMethod::Prism => {
168                    use crate::conversions::interpolator::Prismatic;
169                    self.transform_chunk(src, dst, Box::new(Prismatic::<GRID_SIZE> {}));
170                }
171                InterpolationMethod::Linear => {
172                    use crate::conversions::interpolator::Trilinear;
173                    self.transform_chunk(src, dst, Box::new(Trilinear::<GRID_SIZE> {}));
174                }
175            }
176        }
177
178        Ok(())
179    }
180}
181
182pub(crate) fn make_transform_3x4<
183    T: Copy + AsPrimitive<f32> + Default + PointeeSizeExpressible + 'static + Send + Sync,
184    const GRID_SIZE: usize,
185    const BIT_DEPTH: usize,
186>(
187    layout: Layout,
188    lut: Vec<f32>,
189    options: TransformOptions,
190    color_space: DataColorSpace,
191    is_linear: bool,
192) -> Arc<dyn TransformExecutor<T> + Sync + Send>
193where
194    f32: AsPrimitive<T>,
195    u32: AsPrimitive<T>,
196    (): LutBarycentricReduction<T, u8>,
197    (): LutBarycentricReduction<T, u16>,
198{
199    match layout {
200        Layout::Rgb => match options.barycentric_weight_scale {
201            BarycentricWeightScale::Low => Arc::new(TransformLut3x4::<
202                T,
203                u8,
204                { Layout::Rgb as u8 },
205                GRID_SIZE,
206                BIT_DEPTH,
207                256,
208                256,
209            > {
210                lut,
211                _phantom: PhantomData,
212                _phantom1: PhantomData,
213                interpolation_method: options.interpolation_method,
214                weights: BarycentricWeight::<f32>::create_ranged_256::<GRID_SIZE>(),
215                color_space,
216                is_linear,
217            }),
218            #[cfg(feature = "options")]
219            BarycentricWeightScale::High => Arc::new(TransformLut3x4::<
220                T,
221                u16,
222                { Layout::Rgb as u8 },
223                GRID_SIZE,
224                BIT_DEPTH,
225                65536,
226                65536,
227            > {
228                lut,
229                _phantom: PhantomData,
230                _phantom1: PhantomData,
231                interpolation_method: options.interpolation_method,
232                weights: BarycentricWeight::<f32>::create_binned::<GRID_SIZE, 65536>(),
233                color_space,
234                is_linear,
235            }),
236        },
237        Layout::Rgba => match options.barycentric_weight_scale {
238            BarycentricWeightScale::Low => Arc::new(TransformLut3x4::<
239                T,
240                u8,
241                { Layout::Rgba as u8 },
242                GRID_SIZE,
243                BIT_DEPTH,
244                256,
245                256,
246            > {
247                lut,
248                _phantom: PhantomData,
249                _phantom1: PhantomData,
250                interpolation_method: options.interpolation_method,
251                weights: BarycentricWeight::<f32>::create_ranged_256::<GRID_SIZE>(),
252                color_space,
253                is_linear,
254            }),
255            #[cfg(feature = "options")]
256            BarycentricWeightScale::High => Arc::new(TransformLut3x4::<
257                T,
258                u16,
259                { Layout::Rgba as u8 },
260                GRID_SIZE,
261                BIT_DEPTH,
262                65536,
263                65536,
264            > {
265                lut,
266                _phantom: PhantomData,
267                _phantom1: PhantomData,
268                interpolation_method: options.interpolation_method,
269                weights: BarycentricWeight::<f32>::create_binned::<GRID_SIZE, 65536>(),
270                color_space,
271                is_linear,
272            }),
273        },
274        _ => unimplemented!(),
275    }
276}
moxcms/conversions/transform_lut3_to_4.rs

moxcms/conversions/
transform_lut3_to_4.rs
