Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 1 | /* |
Sanghoon Lee | 1cd4149 | 2018-03-15 11:48:48 +0000 | [diff] [blame] | 2 | * Copyright (c) 2017-2018 ARM Limited. |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 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/CLGaussianPyramidKernel.h" |
| 25 | |
| 26 | #include "arm_compute/core/CL/CLKernelLibrary.h" |
| 27 | #include "arm_compute/core/CL/ICLTensor.h" |
| 28 | #include "arm_compute/core/Helpers.h" |
| 29 | #include "arm_compute/core/Utils.h" |
| 30 | #include "arm_compute/core/Validate.h" |
| 31 | |
| 32 | using namespace arm_compute; |
| 33 | |
| 34 | CLGaussianPyramidHorKernel::CLGaussianPyramidHorKernel() |
Sanghoon Lee | 1cd4149 | 2018-03-15 11:48:48 +0000 | [diff] [blame] | 35 | : _l2_load_offset(0) |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 36 | { |
| 37 | } |
| 38 | |
| 39 | BorderSize CLGaussianPyramidHorKernel::border_size() const |
| 40 | { |
Sanghoon Lee | 1cd4149 | 2018-03-15 11:48:48 +0000 | [diff] [blame] | 41 | return BorderSize(0, 2); |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 42 | } |
| 43 | |
Sanghoon Lee | 1cd4149 | 2018-03-15 11:48:48 +0000 | [diff] [blame] | 44 | void CLGaussianPyramidHorKernel::configure(const ICLTensor *input, ICLTensor *output) |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 45 | { |
| 46 | ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, 1, DataType::U8); |
| 47 | ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(output, 1, DataType::U16); |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 48 | ARM_COMPUTE_ERROR_ON(input->info()->dimension(1) != output->info()->dimension(1)); |
| 49 | |
| 50 | for(size_t i = 2; i < Coordinates::num_max_dimensions; ++i) |
| 51 | { |
| 52 | ARM_COMPUTE_ERROR_ON(input->info()->dimension(i) != output->info()->dimension(i)); |
| 53 | } |
| 54 | |
Sanghoon Lee | 1cd4149 | 2018-03-15 11:48:48 +0000 | [diff] [blame] | 55 | _input = input; |
| 56 | _output = output; |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 57 | |
| 58 | // Create kernel |
| 59 | _kernel = static_cast<cl::Kernel>(CLKernelLibrary::get().create_kernel("gaussian1x5_sub_x")); |
| 60 | |
| 61 | // Configure kernel window |
| 62 | constexpr unsigned int num_elems_processed_per_iteration = 16; |
| 63 | constexpr unsigned int num_elems_read_per_iteration = 20; |
| 64 | constexpr unsigned int num_elems_written_per_iteration = 8; |
Sanghoon Lee | 1cd4149 | 2018-03-15 11:48:48 +0000 | [diff] [blame] | 65 | const float scale_x = static_cast<float>(output->info()->dimension(0)) / input->info()->dimension(0); |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 66 | |
Sanghoon Lee | 1cd4149 | 2018-03-15 11:48:48 +0000 | [diff] [blame] | 67 | Window win = calculate_max_window_horizontal(*input->info(), Steps(num_elems_processed_per_iteration)); |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 68 | AccessWindowHorizontal output_access(output->info(), 0, num_elems_written_per_iteration, scale_x); |
| 69 | |
| 70 | // Sub sampling selects odd pixels (1, 3, 5, ...) for images with even |
| 71 | // width and even pixels (0, 2, 4, ...) for images with odd width. (Whether |
| 72 | // a pixel is even or odd is determined based on the tensor shape not the |
| 73 | // valid region!) |
| 74 | // Thus the offset from which the first pixel (L2) for the convolution is |
| 75 | // loaded depends on the anchor and shape of the valid region. |
| 76 | // In the case of an even shape (= even image width) we need to load L2 |
| 77 | // from -2 if the anchor is odd and from -1 if the anchor is even. That |
| 78 | // makes sure that L2 is always loaded from an odd pixel. |
| 79 | // On the other hand, for an odd shape (= odd image width) we need to load |
| 80 | // L2 from -1 if the anchor is odd and from -2 if the anchor is even to |
| 81 | // achieve the opposite effect. |
| 82 | // The condition can be simplified to checking whether anchor + shape is |
| 83 | // odd (-2) or even (-1) as only adding an odd and an even number will have |
| 84 | // an odd result. |
| 85 | _l2_load_offset = -border_size().left; |
| 86 | |
| 87 | if((_input->info()->valid_region().anchor[0] + _input->info()->valid_region().shape[0]) % 2 == 0) |
| 88 | { |
| 89 | _l2_load_offset += 1; |
| 90 | } |
| 91 | |
| 92 | update_window_and_padding(win, |
| 93 | AccessWindowHorizontal(input->info(), _l2_load_offset, num_elems_read_per_iteration), |
| 94 | output_access); |
| 95 | |
Sanghoon Lee | 1cd4149 | 2018-03-15 11:48:48 +0000 | [diff] [blame] | 96 | output->info()->set_valid_region(ValidRegion(Coordinates(), output->info()->tensor_shape())); |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 97 | |
Anthony Barbier | b6eb353 | 2018-08-08 13:20:04 +0100 | [diff] [blame] | 98 | ICLKernel::configure_internal(win); |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 99 | } |
| 100 | |
| 101 | void CLGaussianPyramidHorKernel::run(const Window &window, cl::CommandQueue &queue) |
| 102 | { |
| 103 | ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this); |
| 104 | ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(ICLKernel::window(), window); |
| 105 | |
| 106 | Window win_in(window); |
| 107 | win_in.shift(Window::DimX, _l2_load_offset); |
| 108 | |
| 109 | //The output is half the width of the input: |
| 110 | Window win_out(window); |
| 111 | win_out.scale(Window::DimX, 0.5f); |
| 112 | |
| 113 | Window slice_in = win_in.first_slice_window_2D(); |
| 114 | Window slice_out = win_out.first_slice_window_2D(); |
| 115 | |
| 116 | do |
| 117 | { |
| 118 | unsigned int idx = 0; |
| 119 | add_2D_tensor_argument(idx, _input, slice_in); |
| 120 | add_2D_tensor_argument(idx, _output, slice_out); |
| 121 | enqueue(queue, *this, slice_out); |
| 122 | } |
| 123 | while(win_in.slide_window_slice_2D(slice_in) && win_out.slide_window_slice_2D(slice_out)); |
| 124 | } |
| 125 | |
| 126 | CLGaussianPyramidVertKernel::CLGaussianPyramidVertKernel() |
| 127 | : _t2_load_offset(0) |
| 128 | { |
| 129 | } |
| 130 | |
| 131 | BorderSize CLGaussianPyramidVertKernel::border_size() const |
| 132 | { |
| 133 | return BorderSize(2, 0); |
| 134 | } |
| 135 | |
Sanghoon Lee | 1cd4149 | 2018-03-15 11:48:48 +0000 | [diff] [blame] | 136 | void CLGaussianPyramidVertKernel::configure(const ICLTensor *input, ICLTensor *output) |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 137 | { |
| 138 | ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, 1, DataType::U16); |
| 139 | ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(output, 1, DataType::U8); |
| 140 | ARM_COMPUTE_ERROR_ON(input->info()->dimension(0) != output->info()->dimension(0)); |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 141 | |
| 142 | for(size_t i = 2; i < Coordinates::num_max_dimensions; ++i) |
| 143 | { |
| 144 | ARM_COMPUTE_ERROR_ON(input->info()->dimension(i) != output->info()->dimension(i)); |
| 145 | } |
| 146 | |
| 147 | _input = input; |
| 148 | _output = output; |
| 149 | |
| 150 | // Create kernel |
| 151 | _kernel = static_cast<cl::Kernel>(CLKernelLibrary::get().create_kernel("gaussian5x1_sub_y")); |
| 152 | |
| 153 | // Configure kernel window |
| 154 | constexpr unsigned int num_elems_processed_per_iteration = 8; |
| 155 | constexpr unsigned int num_rows_processed_per_iteration = 2; |
| 156 | constexpr unsigned int num_elems_written_per_iteration = 8; |
| 157 | constexpr unsigned int num_elems_read_per_iteration = 8; |
| 158 | constexpr unsigned int num_rows_per_iteration = 5; |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 159 | |
Sanghoon Lee | 1cd4149 | 2018-03-15 11:48:48 +0000 | [diff] [blame] | 160 | const float scale_y = static_cast<float>(output->info()->dimension(1)) / input->info()->dimension(1); |
| 161 | |
| 162 | Window win = calculate_max_window(*input->info(), Steps(num_elems_processed_per_iteration, num_rows_processed_per_iteration)); |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 163 | AccessWindowRectangle output_access(output->info(), 0, 0, num_elems_written_per_iteration, num_rows_per_iteration, 1.f, scale_y); |
| 164 | |
| 165 | // Determine whether we need to load even or odd rows. See above for a |
| 166 | // detailed explanation. |
| 167 | _t2_load_offset = -border_size().top; |
| 168 | |
| 169 | if((_input->info()->valid_region().anchor[1] + _input->info()->valid_region().shape[1]) % 2 == 0) |
| 170 | { |
| 171 | _t2_load_offset += 1; |
| 172 | } |
| 173 | |
| 174 | update_window_and_padding(win, |
| 175 | AccessWindowRectangle(input->info(), 0, _t2_load_offset, num_elems_read_per_iteration, num_rows_per_iteration), |
| 176 | output_access); |
| 177 | |
Sanghoon Lee | 1cd4149 | 2018-03-15 11:48:48 +0000 | [diff] [blame] | 178 | output->info()->set_valid_region(ValidRegion(Coordinates(), output->info()->tensor_shape())); |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 179 | |
Anthony Barbier | b6eb353 | 2018-08-08 13:20:04 +0100 | [diff] [blame] | 180 | ICLKernel::configure_internal(win); |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 181 | } |
| 182 | |
| 183 | void CLGaussianPyramidVertKernel::run(const Window &window, cl::CommandQueue &queue) |
| 184 | { |
| 185 | ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this); |
| 186 | ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(IKernel::window(), window); |
| 187 | ARM_COMPUTE_ERROR_ON(window.x().step() != 8); |
| 188 | ARM_COMPUTE_ERROR_ON(window.y().step() % 2); |
| 189 | |
| 190 | Window win_in(window); |
| 191 | win_in.shift(Window::DimY, _t2_load_offset); |
| 192 | |
| 193 | Window win_out(window); |
| 194 | win_out.scale(Window::DimY, 0.5f); |
| 195 | |
| 196 | Window slice_in = win_in.first_slice_window_2D(); |
| 197 | Window slice_out = win_out.first_slice_window_2D(); |
| 198 | |
| 199 | do |
| 200 | { |
| 201 | unsigned int idx = 0; |
| 202 | add_2D_tensor_argument(idx, _input, slice_in); |
| 203 | add_2D_tensor_argument(idx, _output, slice_out); |
| 204 | enqueue(queue, *this, slice_out); |
| 205 | } |
| 206 | while(win_in.slide_window_slice_2D(slice_in) && win_out.slide_window_slice_2D(slice_out)); |
| 207 | } |