Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2017 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/kernels/CLNonLinearFilterKernel.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/Utils.h" |
| 34 | #include "arm_compute/core/Validate.h" |
| 35 | #include "arm_compute/core/Window.h" |
| 36 | |
| 37 | #include <algorithm> |
| 38 | #include <cmath> |
| 39 | #include <cstdlib> |
| 40 | #include <set> |
| 41 | #include <sstream> |
| 42 | #include <string> |
| 43 | |
| 44 | using namespace arm_compute; |
| 45 | |
| 46 | CLNonLinearFilterKernel::CLNonLinearFilterKernel() |
| 47 | : _border_size(0) |
| 48 | { |
| 49 | } |
| 50 | |
| 51 | BorderSize CLNonLinearFilterKernel::border_size() const |
| 52 | { |
| 53 | return _border_size; |
| 54 | } |
| 55 | |
| 56 | void CLNonLinearFilterKernel::configure(const ICLTensor *input, ICLTensor *output, NonLinearFilterFunction function, |
| 57 | unsigned int mask_size, MatrixPattern pattern, const uint8_t *mask, |
| 58 | bool border_undefined) |
| 59 | { |
| 60 | ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, 1, DataType::U8); |
| 61 | ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(output, 1, DataType::U8); |
| 62 | ARM_COMPUTE_ERROR_ON(mask_size != 3 && mask_size != 5); |
| 63 | ARM_COMPUTE_ERROR_ON_MSG(pattern == MatrixPattern::OTHER, "MatrixPattern::OTHER is not supported!"); |
| 64 | ARM_COMPUTE_UNUSED(mask); |
| 65 | |
| 66 | _input = input; |
| 67 | _output = output; |
| 68 | _border_size = BorderSize(mask_size / 2); |
| 69 | |
| 70 | // Define build options |
| 71 | std::set<std::string> build_opts; |
| 72 | build_opts.emplace("-D" + string_from_non_linear_filter_function(function)); |
| 73 | |
| 74 | // Define kernel |
| 75 | std::string pattern_name = string_from_matrix_pattern(pattern); |
| 76 | std::transform(pattern_name.begin(), pattern_name.end(), pattern_name.begin(), ::tolower); |
| 77 | std::stringstream ss; |
| 78 | ss << "non_linear_filter_" << pattern_name << mask_size << "x" << mask_size; |
| 79 | |
| 80 | // Create kernel |
| 81 | _kernel = static_cast<cl::Kernel>(CLKernelLibrary::get().create_kernel(ss.str(), build_opts)); |
| 82 | |
| 83 | // Configure kernel window |
| 84 | constexpr unsigned int num_elems_processed_per_iteration = 8; |
| 85 | constexpr unsigned int num_elems_read_per_iteration = 16; |
| 86 | const unsigned int num_rows_read_per_iteration = mask_size; |
| 87 | |
| 88 | Window win = calculate_max_window(*input->info(), num_elems_processed_per_iteration, border_undefined, border_size()); |
| 89 | |
| 90 | AccessWindowRectangle input_access(input->info(), -border_size().left, -border_size().top, num_elems_read_per_iteration, num_rows_read_per_iteration); |
| 91 | AccessWindowHorizontal output_access(output->info(), 0, num_elems_processed_per_iteration); |
| 92 | |
| 93 | update_window_and_padding(win, input_access, output_access); |
| 94 | |
| 95 | output_access.set_valid_region(win, input->info()->valid_region(), border_undefined, border_size()); |
| 96 | |
| 97 | ICLKernel::configure(win); |
| 98 | } |