moxcms/conversions/
transform_lut3_to_3.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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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#![allow(dead_code)]
30use crate::conversions::LutBarycentricReduction;
31use crate::conversions::interpolator::{BarycentricWeight, MultidimensionalInterpolation};
32use crate::conversions::lut_transforms::Lut3x3Factory;
33use crate::transform::PointeeSizeExpressible;
34use crate::{
35    BarycentricWeightScale, CmsError, DataColorSpace, InterpolationMethod, Layout,
36    TransformExecutor, TransformOptions,
37};
38use num_traits::AsPrimitive;
39use std::marker::PhantomData;
40
41pub(crate) struct TransformLut3x3<
42    T,
43    U,
44    const SRC_LAYOUT: u8,
45    const DST_LAYOUT: u8,
46    const GRID_SIZE: usize,
47    const BIT_DEPTH: usize,
48    const BINS: usize,
49    const BARYCENTRIC_BINS: usize,
50> {
51    pub(crate) lut: Vec<f32>,
52    pub(crate) _phantom: PhantomData<T>,
53    pub(crate) _phantom1: PhantomData<U>,
54    pub(crate) interpolation_method: InterpolationMethod,
55    pub(crate) weights: Box<[BarycentricWeight<f32>; BINS]>,
56    pub(crate) color_space: DataColorSpace,
57    pub(crate) is_linear: bool,
58}
59
60impl<
61    T: Copy + AsPrimitive<f32> + Default + PointeeSizeExpressible,
62    U: AsPrimitive<usize>,
63    const SRC_LAYOUT: u8,
64    const DST_LAYOUT: u8,
65    const GRID_SIZE: usize,
66    const BIT_DEPTH: usize,
67    const BINS: usize,
68    const BARYCENTRIC_BINS: usize,
69> TransformLut3x3<T, U, SRC_LAYOUT, DST_LAYOUT, GRID_SIZE, BIT_DEPTH, BINS, BARYCENTRIC_BINS>
70where
71    f32: AsPrimitive<T>,
72    u32: AsPrimitive<T>,
73    (): LutBarycentricReduction<T, U>,
74{
75    #[inline(always)]
76    fn transform_chunk<'b, Tetrahedral: MultidimensionalInterpolation<'b, GRID_SIZE>>(
77        &'b self,
78        src: &[T],
79        dst: &mut [T],
80    ) {
81        let src_cn = Layout::from(SRC_LAYOUT);
82        let src_channels = src_cn.channels();
83
84        let dst_cn = Layout::from(DST_LAYOUT);
85        let dst_channels = dst_cn.channels();
86
87        let value_scale = ((1 << BIT_DEPTH) - 1) as f32;
88        let max_value = ((1u32 << BIT_DEPTH) - 1).as_();
89
90        for (src, dst) in src
91            .chunks_exact(src_channels)
92            .zip(dst.chunks_exact_mut(dst_channels))
93        {
94            let x = <() as LutBarycentricReduction<T, U>>::reduce::<BIT_DEPTH, BARYCENTRIC_BINS>(
95                src[src_cn.r_i()],
96            );
97            let y = <() as LutBarycentricReduction<T, U>>::reduce::<BIT_DEPTH, BARYCENTRIC_BINS>(
98                src[src_cn.g_i()],
99            );
100            let z = <() as LutBarycentricReduction<T, U>>::reduce::<BIT_DEPTH, BARYCENTRIC_BINS>(
101                src[src_cn.b_i()],
102            );
103
104            let a = if src_channels == 4 {
105                src[src_cn.a_i()]
106            } else {
107                max_value
108            };
109
110            let tetrahedral = Tetrahedral::new(&self.lut);
111            let v = tetrahedral.inter3(x, y, z, &self.weights);
112            if T::FINITE {
113                let r = v * value_scale + 0.5;
114                dst[dst_cn.r_i()] = r.v[0].min(value_scale).max(0.).as_();
115                dst[dst_cn.g_i()] = r.v[1].min(value_scale).max(0.).as_();
116                dst[dst_cn.b_i()] = r.v[2].min(value_scale).max(0.).as_();
117                if dst_channels == 4 {
118                    dst[dst_cn.a_i()] = a;
119                }
120            } else {
121                dst[dst_cn.r_i()] = v.v[0].as_();
122                dst[dst_cn.g_i()] = v.v[1].as_();
123                dst[dst_cn.b_i()] = v.v[2].as_();
124                if dst_channels == 4 {
125                    dst[dst_cn.a_i()] = a;
126                }
127            }
128        }
129    }
130}
131
132impl<
133    T: Copy + AsPrimitive<f32> + Default + PointeeSizeExpressible,
134    U: AsPrimitive<usize>,
135    const SRC_LAYOUT: u8,
136    const DST_LAYOUT: u8,
137    const GRID_SIZE: usize,
138    const BIT_DEPTH: usize,
139    const BINS: usize,
140    const BARYCENTRIC_BINS: usize,
141> TransformExecutor<T>
142    for TransformLut3x3<T, U, SRC_LAYOUT, DST_LAYOUT, GRID_SIZE, BIT_DEPTH, BINS, BARYCENTRIC_BINS>
143where
144    f32: AsPrimitive<T>,
145    u32: AsPrimitive<T>,
146    (): LutBarycentricReduction<T, U>,
147{
148    fn transform(&self, src: &[T], dst: &mut [T]) -> Result<(), CmsError> {
149        let src_cn = Layout::from(SRC_LAYOUT);
150        let src_channels = src_cn.channels();
151
152        let dst_cn = Layout::from(DST_LAYOUT);
153        let dst_channels = dst_cn.channels();
154        if src.len() % src_channels != 0 {
155            return Err(CmsError::LaneMultipleOfChannels);
156        }
157        if dst.len() % dst_channels != 0 {
158            return Err(CmsError::LaneMultipleOfChannels);
159        }
160        let src_chunks = src.len() / src_channels;
161        let dst_chunks = dst.len() / dst_channels;
162        if src_chunks != dst_chunks {
163            return Err(CmsError::LaneSizeMismatch);
164        }
165
166        if self.color_space == DataColorSpace::Lab
167            || (self.is_linear && self.color_space == DataColorSpace::Rgb)
168            || self.color_space == DataColorSpace::Xyz
169        {
170            use crate::conversions::interpolator::Trilinear;
171            self.transform_chunk::<Trilinear<GRID_SIZE>>(src, dst);
172        } else {
173            match self.interpolation_method {
174                #[cfg(feature = "options")]
175                InterpolationMethod::Tetrahedral => {
176                    use crate::conversions::interpolator::Tetrahedral;
177                    self.transform_chunk::<Tetrahedral<GRID_SIZE>>(src, dst);
178                }
179                #[cfg(feature = "options")]
180                InterpolationMethod::Pyramid => {
181                    use crate::conversions::interpolator::Pyramidal;
182                    self.transform_chunk::<Pyramidal<GRID_SIZE>>(src, dst);
183                }
184                #[cfg(feature = "options")]
185                InterpolationMethod::Prism => {
186                    use crate::conversions::interpolator::Prismatic;
187                    self.transform_chunk::<Prismatic<GRID_SIZE>>(src, dst);
188                }
189                InterpolationMethod::Linear => {
190                    use crate::conversions::interpolator::Trilinear;
191                    self.transform_chunk::<Trilinear<GRID_SIZE>>(src, dst);
192                }
193            }
194        }
195
196        Ok(())
197    }
198}
199
200pub(crate) struct DefaultLut3x3Factory {}
201
202impl Lut3x3Factory for DefaultLut3x3Factory {
203    fn make_transform_3x3<
204        T: Copy + AsPrimitive<f32> + Default + PointeeSizeExpressible + 'static + Send + Sync,
205        const SRC_LAYOUT: u8,
206        const DST_LAYOUT: u8,
207        const GRID_SIZE: usize,
208        const BIT_DEPTH: usize,
209    >(
210        lut: Vec<f32>,
211        options: TransformOptions,
212        color_space: DataColorSpace,
213        is_linear: bool,
214    ) -> Box<dyn TransformExecutor<T> + Send + Sync>
215    where
216        f32: AsPrimitive<T>,
217        u32: AsPrimitive<T>,
218        (): LutBarycentricReduction<T, u8>,
219        (): LutBarycentricReduction<T, u16>,
220    {
221        match options.barycentric_weight_scale {
222            BarycentricWeightScale::Low => Box::new(TransformLut3x3::<
223                T,
224                u8,
225                SRC_LAYOUT,
226                DST_LAYOUT,
227                GRID_SIZE,
228                BIT_DEPTH,
229                256,
230                256,
231            > {
232                lut,
233                _phantom: PhantomData,
234                _phantom1: PhantomData,
235                interpolation_method: options.interpolation_method,
236                weights: BarycentricWeight::<f32>::create_ranged_256::<GRID_SIZE>(),
237                color_space,
238                is_linear,
239            }),
240            #[cfg(feature = "options")]
241            BarycentricWeightScale::High => Box::new(TransformLut3x3::<
242                T,
243                u16,
244                SRC_LAYOUT,
245                DST_LAYOUT,
246                GRID_SIZE,
247                BIT_DEPTH,
248                65536,
249                65536,
250            > {
251                lut,
252                _phantom: PhantomData,
253                _phantom1: PhantomData,
254                interpolation_method: options.interpolation_method,
255                weights: BarycentricWeight::<f32>::create_binned::<GRID_SIZE, 65536>(),
256                color_space,
257                is_linear,
258            }),
259        }
260    }
261}
moxcms/conversions/transform_lut3_to_3.rs

moxcms/conversions/
transform_lut3_to_3.rs
