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/CLMedian3x3Kernel.h"
25
26 #include "arm_compute/core/CL/CLKernelLibrary.h"
27 #include "arm_compute/core/CL/ICLTensor.h"
28 #include "arm_compute/core/CL/OpenCL.h"
29 #include "arm_compute/core/Validate.h"
30 #include "src/core/helpers/WindowHelpers.h"
31 #include "support/StringSupport.h"
32
33 using namespace arm_compute;
34
border_size() const35 BorderSize CLMedian3x3Kernel::border_size() const
36 {
37 return BorderSize(1);
38 }
39
configure(const ICLTensor * input,ICLTensor * output,bool border_undefined)40 void CLMedian3x3Kernel::configure(const ICLTensor *input, ICLTensor *output, bool border_undefined)
41 {
42 configure(CLKernelLibrary::get().get_compile_context(), input, output, border_undefined);
43 }
44
configure(const CLCompileContext & compile_context,const ICLTensor * input,ICLTensor * output,bool border_undefined)45 void CLMedian3x3Kernel::configure(const CLCompileContext &compile_context, const ICLTensor *input, ICLTensor *output, bool border_undefined)
46 {
47 ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, 1, DataType::U8);
48 ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(output, 1, DataType::U8);
49
50 _input = input;
51 _output = output;
52
53 // Create kernel
54 const std::string kernel_name = std::string("non_linear_filter_box3x3");
55 _kernel = create_kernel(compile_context, kernel_name, { "-DMEDIAN" });
56
57 // Configure kernel window
58 constexpr unsigned int num_elems_processed_per_iteration = 8;
59 constexpr unsigned int num_elems_read_per_iteration = 16;
60 constexpr unsigned int num_elems_written_per_iteration = 8;
61 constexpr unsigned int num_rows_read_per_iteration = 3;
62
63 Window win = calculate_max_window(*input->info(), Steps(num_elems_processed_per_iteration), border_undefined, border_size());
64
65 AccessWindowRectangle input_access(input->info(), -border_size().left, -border_size().top, num_elems_read_per_iteration, num_rows_read_per_iteration);
66 AccessWindowHorizontal output_access(output->info(), 0, num_elems_written_per_iteration);
67
68 update_window_and_padding(win, input_access, output_access);
69
70 output_access.set_valid_region(win, input->info()->valid_region(), border_undefined, border_size());
71
72 ICLKernel::configure_internal(win);
73
74 // Set config_id for enabling LWS tuning
75 _config_id = kernel_name;
76 _config_id += "_";
77 _config_id += lower_string(string_from_data_type(input->info()->data_type()));
78 _config_id += "_";
79 _config_id += support::cpp11::to_string(input->info()->dimension(0));
80 _config_id += "_";
81 _config_id += support::cpp11::to_string(input->info()->dimension(1));
82 _config_id += "_";
83 _config_id += support::cpp11::to_string(output->info()->dimension(0));
84 _config_id += "_";
85 _config_id += support::cpp11::to_string(output->info()->dimension(1));
86 _config_id += "_";
87 _config_id += support::cpp11::to_string(border_undefined);
88 }
89