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24 #include "arm_compute/core/CL/kernels/CLSobel3x3Kernel.h"
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/Error.h"
30 #include "arm_compute/core/Helpers.h"
31 #include "arm_compute/core/Types.h"
32 #include "arm_compute/core/Validate.h"
33 #include "arm_compute/core/Window.h"
38 using namespace arm_compute;
40 CLSobel3x3Kernel::CLSobel3x3Kernel()
41 : _input(nullptr), _output_x(nullptr), _output_y(nullptr), _run_sobel_x(false), _run_sobel_y(false)
45 BorderSize CLSobel3x3Kernel::border_size() const
50 void CLSobel3x3Kernel::configure(const ICLTensor *input, ICLTensor *output_x, ICLTensor *output_y, bool border_undefined)
52 ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, 1, DataType::U8);
53 ARM_COMPUTE_ERROR_ON((output_x == nullptr) && (output_y == nullptr));
55 _run_sobel_x = output_x != nullptr;
56 _run_sobel_y = output_y != nullptr;
60 ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(output_x, 1, DataType::S16);
65 ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(output_y, 1, DataType::S16);
73 std::set<std::string> build_opts;
77 build_opts.insert("-DGRAD_X");
82 build_opts.insert("-DGRAD_Y");
86 _kernel = static_cast<cl::Kernel>(CLKernelLibrary::get().create_kernel("sobel3x3", build_opts));
88 // Configure kernel window
89 constexpr unsigned int num_elems_processed_per_iteration = 8;
90 constexpr unsigned int num_elems_read_per_iteration = 16;
91 constexpr unsigned int num_elems_written_per_iteration = 8;
92 constexpr unsigned int num_rows_read_per_iteration = 3;
94 Window win = calculate_max_window(*input->info(), Steps(num_elems_processed_per_iteration), border_undefined, border_size());
96 AccessWindowRectangle input_access(input->info(), -border_size().left, -border_size().top, num_elems_read_per_iteration, num_rows_read_per_iteration);
97 AccessWindowHorizontal output_x_access(output_x == nullptr ? nullptr : output_x->info(), 0, num_elems_written_per_iteration);
98 AccessWindowHorizontal output_y_access(output_y == nullptr ? nullptr : output_y->info(), 0, num_elems_written_per_iteration);
100 update_window_and_padding(win, input_access, output_x_access, output_y_access);
102 output_x_access.set_valid_region(win, input->info()->valid_region(), border_undefined, border_size());
103 output_y_access.set_valid_region(win, input->info()->valid_region(), border_undefined, border_size());
105 ICLKernel::configure(win);
108 void CLSobel3x3Kernel::run(const Window &window, cl::CommandQueue &queue)
110 ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this);
111 ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(ICLKernel::window(), window);
113 Window slice = window.first_slice_window_2D();
117 unsigned int idx = 0;
118 add_2D_tensor_argument(idx, _input, slice);
122 add_2D_tensor_argument(idx, _output_x, slice);
127 add_2D_tensor_argument(idx, _output_y, slice);
130 enqueue(queue, *this, slice);
132 while(window.slide_window_slice_2D(slice));