1 /*
2 * Copyright (c) 2018-2020 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 #include "Reverse.h"
25
26 #include "arm_compute/core/Types.h"
27 #include "tests/validation/Helpers.h"
28
29 namespace arm_compute
30 {
31 namespace test
32 {
33 namespace validation
34 {
35 namespace reference
36 {
37 template <typename T>
reverse(const SimpleTensor<T> & src,const SimpleTensor<uint32_t> & axis)38 SimpleTensor<T> reverse(const SimpleTensor<T> &src, const SimpleTensor<uint32_t> &axis)
39 {
40 ARM_COMPUTE_ERROR_ON(axis.shape().num_dimensions() > 1);
41 ARM_COMPUTE_ERROR_ON(axis.shape().x() > 4);
42
43 // Create reference
44 SimpleTensor<T> dst{ src.shape(), src.data_type(), src.num_channels(), src.quantization_info() };
45
46 const unsigned int width = src.shape()[0];
47 const unsigned int height = src.shape()[1];
48 const unsigned int depth = src.shape()[2];
49 const unsigned int batches = src.shape()[3];
50
51 std::array<bool, 4> to_reverse = { { false, false, false, false } };
52 for(int i = 0; i < axis.num_elements(); ++i)
53 {
54 to_reverse[axis[i]] = true;
55 }
56
57 const uint32_t num_elements = src.num_elements();
58
59 #if defined(_OPENMP)
60 #pragma omp parallel for
61 #endif /* _OPENMP */
62 for(uint32_t i = 0; i < num_elements; ++i)
63 {
64 const Coordinates src_coord = index2coord(src.shape(), i);
65 const unsigned int dst_x = to_reverse[0] ? width - src_coord[0] - 1 : src_coord[0];
66 const unsigned int dst_y = to_reverse[1] ? height - src_coord[1] - 1 : src_coord[1];
67 const unsigned int dst_z = to_reverse[2] ? depth - src_coord[2] - 1 : src_coord[2];
68 const unsigned int dst_w = to_reverse[3] ? batches - src_coord[3] - 1 : src_coord[3];
69
70 dst[coord2index(src.shape(), Coordinates(dst_x, dst_y, dst_z, dst_w))] = src[i];
71 }
72
73 return dst;
74 }
75
76 template SimpleTensor<uint8_t> reverse(const SimpleTensor<uint8_t> &src, const SimpleTensor<uint32_t> &axis);
77 template SimpleTensor<half> reverse(const SimpleTensor<half> &src, const SimpleTensor<uint32_t> &axis);
78 template SimpleTensor<float> reverse(const SimpleTensor<float> &src, const SimpleTensor<uint32_t> &axis);
79 } // namespace reference
80 } // namespace validation
81 } // namespace test
82 } // namespace arm_compute
83