1 /*
2 * Copyright (c) 2016-2020 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 "src/core/CL/kernels/CLWarpPerspectiveKernel.h"
25
26 #include "arm_compute/core/CL/CLHelpers.h"
27 #include "arm_compute/core/CL/CLKernelLibrary.h"
28 #include "arm_compute/core/CL/ICLTensor.h"
29 #include "arm_compute/core/CL/OpenCL.h"
30 #include "arm_compute/core/Error.h"
31 #include "arm_compute/core/Helpers.h"
32 #include "arm_compute/core/TensorInfo.h"
33 #include "arm_compute/core/Validate.h"
34 #include "src/core/AccessWindowStatic.h"
35 #include "src/core/helpers/WindowHelpers.h"
36
37 #include <cstddef>
38 #include <set>
39 #include <sstream>
40 #include <string>
41
42 using namespace arm_compute;
43
44 namespace
45 {
options_add_matrix(std::set<std::string> & options,const std::array<float,9> & matrix)46 inline void options_add_matrix(std::set<std::string> &options, const std::array<float, 9> &matrix)
47 {
48 for(size_t i = 0; i < 9; ++i)
49 {
50 std::stringstream mat_str;
51 mat_str << "-DMAT" << i << "=" << matrix[i] << " ";
52 options.insert(mat_str.str());
53 }
54 }
55 } // namespace
56
border_size() const57 BorderSize CLWarpPerspectiveKernel::border_size() const
58 {
59 return BorderSize(1);
60 }
61
configure(const ICLTensor * input,ICLTensor * output,const std::array<float,9> & matrix,InterpolationPolicy policy)62 void CLWarpPerspectiveKernel::configure(const ICLTensor *input, ICLTensor *output, const std::array<float, 9> &matrix, InterpolationPolicy policy)
63 {
64 configure(CLKernelLibrary::get().get_compile_context(), input, output, matrix, policy);
65 }
66
configure(const CLCompileContext & compile_context,const ICLTensor * input,ICLTensor * output,const std::array<float,9> & matrix,InterpolationPolicy policy)67 void CLWarpPerspectiveKernel::configure(const CLCompileContext &compile_context, const ICLTensor *input, ICLTensor *output, const std::array<float, 9> &matrix, InterpolationPolicy policy)
68 {
69 ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, 1, DataType::U8);
70 ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(output, 1, DataType::U8);
71 ARM_COMPUTE_ERROR_ON(InterpolationPolicy::AREA == policy);
72
73 _input = input;
74 _output = output;
75
76 // Create build options
77 std::set<std::string> options;
78 options_add_matrix(options, matrix);
79 options.emplace(("-DDATA_TYPE=" + get_cl_type_from_data_type(input->info()->data_type())));
80
81 // Create kernel
82 std::string interpolation_name = string_from_interpolation_policy(policy);
83 std::transform(interpolation_name.begin(), interpolation_name.end(), interpolation_name.begin(), ::tolower);
84 std::string kernel_name = "warp_perspective_" + interpolation_name;
85 _kernel = create_kernel(compile_context, kernel_name, options);
86
87 // Set static kernel arguments
88 unsigned int idx = 2 * num_arguments_per_2D_tensor(); //Skip the input and output parameters
89 _kernel.setArg<cl_int>(idx++, input->info()->dimension(0));
90 _kernel.setArg<cl_int>(idx++, input->info()->dimension(1));
91
92 // Configure kernel window
93 constexpr unsigned int num_elems_processed_per_iteration = 4;
94
95 Window win = calculate_max_window(*output->info(), Steps(num_elems_processed_per_iteration));
96
97 AccessWindowStatic input_access(input->info(), -border_size().left, -border_size().top, input->info()->dimension(0) + border_size().right, input->info()->dimension(1) + border_size().bottom);
98 AccessWindowHorizontal output_access(output->info(), 0, num_elems_processed_per_iteration);
99
100 update_window_and_padding(win, input_access, output_access);
101
102 output_access.set_valid_region(win, ValidRegion(Coordinates(), output->info()->tensor_shape()));
103
104 ICLKernel::configure_internal(win);
105 }
106