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 "arm_compute/core/CL/CLHelpers.h"
25 #include "arm_compute/core/CL/CLKernelLibrary.h"
26 #include "arm_compute/core/CL/ICLTensor.h"
27 #include "arm_compute/core/CL/OpenCL.h"
28 #include "arm_compute/core/Helpers.h"
29 #include "arm_compute/core/Validate.h"
30
31 #include "src/core/CL/kernels/CLAbsoluteDifferenceKernel.h"
32 #include "src/core/helpers/WindowHelpers.h"
33
34 #include <set>
35 #include <string>
36
37 using namespace arm_compute;
38
CLAbsoluteDifferenceKernel()39 CLAbsoluteDifferenceKernel::CLAbsoluteDifferenceKernel()
40 : _input1(nullptr), _input2(nullptr), _output(nullptr)
41 {
42 }
43
configure(const ICLTensor * input1,const ICLTensor * input2,ICLTensor * output)44 void CLAbsoluteDifferenceKernel::configure(const ICLTensor *input1, const ICLTensor *input2, ICLTensor *output)
45 {
46 configure(CLKernelLibrary::get().get_compile_context(), input1, input2, output);
47 }
48
configure(const CLCompileContext & compile_context,const ICLTensor * input1,const ICLTensor * input2,ICLTensor * output)49 void CLAbsoluteDifferenceKernel::configure(const CLCompileContext &compile_context, const ICLTensor *input1, const ICLTensor *input2, ICLTensor *output)
50 {
51 ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input1, 1, DataType::U8, DataType::S16);
52 ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input2, 1, DataType::U8, DataType::S16);
53 ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(output, 1, DataType::U8, DataType::S16);
54 ARM_COMPUTE_ERROR_ON_MSG(output->info()->data_type() == DataType::U8 && (input1->info()->data_type() != DataType::U8 || input2->info()->data_type() != DataType::U8),
55 "The output image can only be U8 if both input images are U8");
56
57 _input1 = input1;
58 _input2 = input2;
59 _output = output;
60
61 // Set kernel build options
62 std::set<std::string> build_opts;
63 build_opts.insert("-DDATA_TYPE_IN1=" + get_cl_type_from_data_type(input1->info()->data_type()));
64 build_opts.insert("-DDATA_TYPE_IN2=" + get_cl_type_from_data_type(input2->info()->data_type()));
65 build_opts.insert("-DDATA_TYPE_OUT=" + get_cl_type_from_data_type(output->info()->data_type()));
66
67 // Create kernel
68 _kernel = create_kernel(compile_context, "absdiff", build_opts);
69
70 // Configure kernel window
71 constexpr unsigned int num_elems_processed_per_iteration = 16;
72
73 Window win = calculate_max_window(*input1->info(), Steps(num_elems_processed_per_iteration));
74
75 AccessWindowHorizontal input1_access(input1->info(), 0, num_elems_processed_per_iteration);
76 AccessWindowHorizontal input2_access(input2->info(), 0, num_elems_processed_per_iteration);
77 AccessWindowHorizontal output_access(output->info(), 0, num_elems_processed_per_iteration);
78
79 update_window_and_padding(win, input1_access, input2_access, output_access);
80
81 ValidRegion valid_region = intersect_valid_regions(input1->info()->valid_region(),
82 input2->info()->valid_region());
83
84 output_access.set_valid_region(win, valid_region);
85
86 ICLKernel::configure_internal(win);
87 }
88
run(const Window & window,cl::CommandQueue & queue)89 void CLAbsoluteDifferenceKernel::run(const Window &window, cl::CommandQueue &queue)
90 {
91 ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this);
92 ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(ICLKernel::window(), window);
93
94 Window slice = window.first_slice_window_2D();
95 do
96 {
97 unsigned int idx = 0;
98 add_2D_tensor_argument(idx, _input1, slice);
99 add_2D_tensor_argument(idx, _input2, slice);
100 add_2D_tensor_argument(idx, _output, slice);
101 enqueue(queue, *this, slice, lws_hint());
102 }
103 while(window.slide_window_slice_2D(slice));
104 }
105