1 /*
2 * Copyright (c) 2017-2021 Arm Limited.
3 *
4 * SPDX-License-Identifier: MIT
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to
8 * deal in the Software without restriction, including without limitation the
9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
10 * sell copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in all
14 * copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 */
24 #ifndef ARM_COMPUTE_TEST_VALIDATION_UTILS_H
25 #define ARM_COMPUTE_TEST_VALIDATION_UTILS_H
26
27 #include "arm_compute/core/Types.h"
28 #include "tests/Globals.h"
29 #include "tests/Types.h"
30
31 #include <array>
32 #include <random>
33 #include <type_traits>
34 #include <utility>
35 #include <vector>
36
37 namespace arm_compute
38 {
39 namespace test
40 {
41 namespace validation
42 {
43 /** Checks if a pixel has valid coordinates
44 *
45 * @param x X coordinate
46 * @param y Y coordinate
47 * @param width Width of the image
48 * @param height Height of the image
49 * @param border_size Border size
50 *
51 * @return True if pixel is valid else false
52 */
is_valid_pixel_index(int x,int y,int width,int height,int border_size)53 inline bool is_valid_pixel_index(int x, int y, int width, int height, int border_size)
54 {
55 return ((x >= -border_size) && (y >= -border_size) && (x < (width + border_size)) && (y < height + border_size));
56 }
57
58 #pragma GCC diagnostic push
59 #pragma GCC diagnostic ignored "-Wstrict-overflow"
60
61 // Return a tensor element at a specified coordinate with different border modes
62 template <typename T>
tensor_elem_at(const SimpleTensor<T> & src,Coordinates coord,BorderMode border_mode,T constant_border_value)63 T tensor_elem_at(const SimpleTensor<T> &src, Coordinates coord, BorderMode border_mode, T constant_border_value)
64 {
65 const int x = coord.x();
66 const int y = coord.y();
67 const int z = coord.z();
68 const int width = src.shape().x();
69 const int height = src.shape().y();
70 const int depth = src.shape().z();
71
72 // If coordinates beyond range of tensor's width or height
73 if(x < 0 || y < 0 || z < 0 || x >= width || y >= height || z >= depth)
74 {
75 if(border_mode == BorderMode::REPLICATE)
76 {
77 coord.set(0, std::max(0, std::min(x, width - 1)));
78 coord.set(1, std::max(0, std::min(y, height - 1)));
79 }
80 else
81 {
82 return constant_border_value;
83 }
84 }
85
86 return src[coord2index(src.shape(), coord)];
87 }
88
89 #pragma GCC diagnostic pop
90
91 template <typename T>
92 T bilinear_policy(const SimpleTensor<T> &in, Coordinates id, float xn, float yn, BorderMode border_mode, T constant_border_value);
93
94 /* Apply 2D spatial filter on a single element of @p in at coordinates @p coord
95 *
96 * - filter sizes have to be odd number
97 * - Row major order of filter assumed
98 * - TO_ZERO rounding policy assumed
99 * - SATURATE convert policy assumed
100 */
101 template <typename T, typename U, typename V>
102 void apply_2d_spatial_filter(Coordinates coord, const SimpleTensor<T> &src, SimpleTensor<U> &dst, const TensorShape &filter_shape, const V *filter_itr, double scale, BorderMode border_mode,
103 T constant_border_value = T(0))
104 {
105 double val = 0.;
106 const int x = coord.x();
107 const int y = coord.y();
108 for(int j = y - static_cast<int>(filter_shape[1] / 2); j <= y + static_cast<int>(filter_shape[1] / 2); ++j)
109 {
110 for(int i = x - static_cast<int>(filter_shape[0] / 2); i <= x + static_cast<int>(filter_shape[0] / 2); ++i)
111 {
112 coord.set(0, i);
113 coord.set(1, j);
114 val += static_cast<double>(*filter_itr) * tensor_elem_at(src, coord, border_mode, constant_border_value);
115 ++filter_itr;
116 }
117 }
118 coord.set(0, x);
119 coord.set(1, y);
120 dst[coord2index(src.shape(), coord)] = saturate_cast<U>(support::cpp11::trunc(val * scale));
121 }
122
123 RawTensor transpose(const RawTensor &src, int chunk_width = 1);
124
125 bool valid_bilinear_policy(float xn, float yn, int width, int height, BorderMode border_mode);
126 } // namespace validation
127 } // namespace test
128 } // namespace arm_compute
129 #endif /* ARM_COMPUTE_TEST_VALIDATION_UTILS_H */
130