moxcms/
lut_hint.rs

1/*
2 * // Copyright (c) Radzivon Bartoshyk 6/2025. 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:
6 * //
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
21 * // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
22 * // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
24 * // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
25 * // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
26 * // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27 * // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29use crate::LutWarehouse;
30
31impl LutWarehouse {
32    /// Method tests if mathematical fusion on LUT table is allowed.
33    /// If it's not, full brute-force pass in [Katana] is required.
34    #[cfg(feature = "any_to_any")]
35    pub(crate) fn is_katana_required(&self) -> bool {
36        match self {
37            LutWarehouse::Lut(lut) => {
38                let input_entries = lut.num_input_channels as usize;
39                let output_entries = lut.num_output_channels as usize;
40                for i in 0..input_entries {
41                    if lut.input_table.is_degenerated(input_entries, i) {
42                        return true;
43                    }
44                    if !lut.input_table.is_monotonic(input_entries, i) {
45                        return true;
46                    }
47                    if lut.input_table.have_discontinuities(input_entries, i) {
48                        return true;
49                    }
50                }
51
52                for i in 0..output_entries {
53                    if lut.output_table.is_degenerated(output_entries, i) {
54                        return true;
55                    }
56                    if !lut.output_table.is_monotonic(output_entries, i) {
57                        return true;
58                    }
59                    if lut.output_table.have_discontinuities(output_entries, i) {
60                        return true;
61                    }
62                }
63
64                false
65            }
66            LutWarehouse::Multidimensional(mab) => {
67                for curve in mab.a_curves.iter() {
68                    if curve.is_degenerated() {
69                        return true;
70                    }
71                    if !curve.is_monotonic() {
72                        return true;
73                    }
74                    if curve.have_discontinuities() {
75                        return true;
76                    }
77                }
78
79                for curve in mab.m_curves.iter() {
80                    if curve.is_degenerated() {
81                        return true;
82                    }
83                    if !curve.is_monotonic() {
84                        return true;
85                    }
86                    if curve.have_discontinuities() {
87                        return true;
88                    }
89                }
90
91                for curve in mab.b_curves.iter() {
92                    if curve.is_degenerated() {
93                        return true;
94                    }
95                    if !curve.is_monotonic() {
96                        return true;
97                    }
98                    if curve.have_discontinuities() {
99                        return true;
100                    }
101                }
102
103                false
104            }
105        }
106    }
107}
moxcms/lut_hint.rs

moxcms/
lut_hint.rs
