Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2016, 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 | namespace arm_compute |
| 25 | { |
| 26 | inline Window::Window(const Window &src) |
Moritz Pflanzer | c186b57 | 2017-09-07 09:48:04 +0100 | [diff] [blame] | 27 | : _dims() |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 28 | { |
| 29 | for(size_t i = 0; i < Coordinates::num_max_dimensions; ++i) |
| 30 | { |
| 31 | set(i, src[i]); |
| 32 | } |
| 33 | } |
| 34 | |
Moritz Pflanzer | c186b57 | 2017-09-07 09:48:04 +0100 | [diff] [blame] | 35 | inline constexpr const Window::Dimension &Window::operator[](size_t dimension) const |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 36 | { |
| 37 | // Precondition: dimension < Coordinates::num_max_dimensions |
| 38 | return _dims.at(dimension); |
| 39 | } |
Moritz Pflanzer | c186b57 | 2017-09-07 09:48:04 +0100 | [diff] [blame] | 40 | inline void Window::set(size_t dimension, const Window::Dimension &dim) |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 41 | { |
| 42 | ARM_COMPUTE_ERROR_ON(dimension >= Coordinates::num_max_dimensions); |
| 43 | _dims[dimension] = dim; |
| 44 | } |
| 45 | |
Anthony Barbier | be35b0e | 2017-07-11 18:13:08 +0100 | [diff] [blame] | 46 | inline Window Window::collapse_if_possible(const Window &full_window, size_t first) const |
| 47 | { |
| 48 | bool is_collapsable = false; |
| 49 | Window collapsed; |
| 50 | for(size_t d = 0; d < Coordinates::num_max_dimensions; ++d) |
| 51 | { |
| 52 | if(is_collapsable) |
| 53 | { |
| 54 | collapsed.set(first, Window::Dimension(collapsed[first].end() * _dims[d].start(), collapsed[first].end() * _dims[d].end())); |
| 55 | } |
| 56 | else |
| 57 | { |
| 58 | collapsed.set(d, _dims[d]); |
| 59 | } |
| 60 | |
| 61 | if(is_collapsable || d == first) // Try to start collapsing from this dimension |
| 62 | { |
| 63 | // The _dims's dimension must match the full _dims dimension to be collapsable: |
| 64 | is_collapsable = _dims[d].start() == 0 && _dims[d].start() == full_window[d].start() |
| 65 | && full_window[d].end() == _dims[d].end(); |
| 66 | } |
| 67 | else |
| 68 | { |
| 69 | is_collapsable = false; |
| 70 | } |
| 71 | } |
| 72 | return collapsed; |
| 73 | } |
| 74 | |
Michalis Spyrou | 5237e01 | 2018-01-17 09:40:27 +0000 | [diff] [blame] | 75 | inline Window Window::collapse(const Window &full_window, size_t first) const |
| 76 | { |
| 77 | Window collapsed = collapse_if_possible(full_window, first); |
| 78 | // Make sure that the window has collapsed |
| 79 | int end = _dims[first].end(); |
| 80 | int start = 0; |
| 81 | ARM_COMPUTE_UNUSED(start); |
| 82 | for(size_t d = first + 1; d < Coordinates::num_max_dimensions; ++d) |
| 83 | { |
| 84 | start = end * _dims[d].start(); |
| 85 | end *= _dims[d].end(); |
| 86 | } |
| 87 | ARM_COMPUTE_ERROR_ON((collapsed[first].end() != end) || (collapsed[first].start() != start)); |
| 88 | return collapsed; |
| 89 | } |
| 90 | |
Moritz Pflanzer | c186b57 | 2017-09-07 09:48:04 +0100 | [diff] [blame] | 91 | inline void Window::shift(size_t dimension, int shift_value) |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 92 | { |
| 93 | ARM_COMPUTE_ERROR_ON(dimension >= Coordinates::num_max_dimensions); |
| 94 | Window::Dimension &d = _dims[dimension]; |
| 95 | d = Window::Dimension(d.start() + shift_value, d.end() + shift_value, d.step()); |
| 96 | } |
| 97 | |
| 98 | inline void Window::adjust(size_t dimension, int adjust_value, bool is_at_start) |
| 99 | { |
| 100 | ARM_COMPUTE_ERROR_ON(dimension >= Coordinates::num_max_dimensions); |
| 101 | Window::Dimension &d = _dims[dimension]; |
| 102 | |
| 103 | if(is_at_start) |
| 104 | { |
| 105 | d = Window::Dimension(d.start() + adjust_value, d.end(), d.step()); |
| 106 | } |
| 107 | else |
| 108 | { |
| 109 | d = Window::Dimension(d.start(), d.end() + adjust_value, d.step()); |
| 110 | } |
| 111 | } |
| 112 | |
Moritz Pflanzer | c186b57 | 2017-09-07 09:48:04 +0100 | [diff] [blame] | 113 | inline void Window::scale(size_t dimension, float scale_value) |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 114 | { |
| 115 | ARM_COMPUTE_ERROR_ON(dimension >= Coordinates::num_max_dimensions); |
| 116 | Window::Dimension &d = _dims[dimension]; |
| 117 | const int scaled_step = d.step() * scale_value; |
| 118 | const int scaled_end = ceil_to_multiple(d.end() * scale_value, scaled_step); |
| 119 | d = Window::Dimension(d.start() * scale_value, scaled_end, scaled_step); |
| 120 | } |
| 121 | |
Moritz Pflanzer | c186b57 | 2017-09-07 09:48:04 +0100 | [diff] [blame] | 122 | inline void Window::set_dimension_step(size_t dimension, int step) |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 123 | { |
| 124 | ARM_COMPUTE_ERROR_ON(dimension >= Coordinates::num_max_dimensions); |
| 125 | _dims[dimension].set_step(step); |
| 126 | } |
| 127 | |
| 128 | inline void Window::validate() const |
| 129 | { |
| 130 | for(size_t i = 0; i < Coordinates::num_max_dimensions; ++i) |
| 131 | { |
| 132 | ARM_COMPUTE_ERROR_ON(_dims[i].step() == 0); |
Moritz Pflanzer | 6c6597c | 2017-09-24 12:09:41 +0100 | [diff] [blame] | 133 | ARM_COMPUTE_ERROR_ON(_dims[i].end() < _dims[i].start()); |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 134 | ARM_COMPUTE_ERROR_ON((_dims[i].end() - _dims[i].start()) % _dims[i].step()); |
| 135 | } |
| 136 | } |
| 137 | |
| 138 | inline constexpr size_t Window::num_iterations(size_t dimension) const |
| 139 | { |
| 140 | // Precondition: dimension < Coordinates::num_max_dimensions |
| 141 | // Precondition: (end - start) % step == 0 |
| 142 | return (_dims.at(dimension).end() - _dims.at(dimension).start()) / _dims.at(dimension).step(); |
| 143 | } |
| 144 | |
Moritz Pflanzer | c186b57 | 2017-09-07 09:48:04 +0100 | [diff] [blame] | 145 | inline Window Window::split_window(size_t dimension, size_t id, size_t total) const |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 146 | { |
| 147 | ARM_COMPUTE_ERROR_ON(id >= total); |
| 148 | ARM_COMPUTE_ERROR_ON(dimension >= Coordinates::num_max_dimensions); |
| 149 | |
| 150 | Window out; |
| 151 | |
| 152 | for(size_t d = 0; d < Coordinates::num_max_dimensions; ++d) |
| 153 | { |
| 154 | if(d == dimension) |
| 155 | { |
| 156 | int start = _dims[d].start(); |
| 157 | int end = _dims[d].end(); |
| 158 | int per_sub_window = (num_iterations(d) / total) * _dims[d].step(); |
| 159 | |
| 160 | start += id * per_sub_window; |
| 161 | |
| 162 | if(id != total - 1) |
| 163 | { |
| 164 | end = start + per_sub_window; |
| 165 | } |
| 166 | |
| 167 | out.set(d, Dimension(start, end, _dims[d].step())); |
| 168 | } |
| 169 | else |
| 170 | { |
| 171 | out.set(d, _dims[d]); |
| 172 | } |
| 173 | } |
| 174 | |
| 175 | return out; |
| 176 | } |
| 177 | |
| 178 | template <unsigned int window_dimension> |
| 179 | inline bool Window::slide_window_slice(Window &slice) const |
| 180 | { |
| 181 | for(unsigned int n = window_dimension; n < Coordinates::num_max_dimensions; ++n) |
| 182 | { |
| 183 | // Did we reach the end of this dimension? |
| 184 | const int v = slice._dims[n].start() + 1; |
| 185 | |
| 186 | if(v < _dims[n].end()) |
| 187 | { |
| 188 | // No: increment |
| 189 | slice._dims[n] = Dimension(v, v + 1, 1); |
| 190 | |
| 191 | // Reset lower dimensions: |
| 192 | for(unsigned int lower = window_dimension; lower < n; ++lower) |
| 193 | { |
| 194 | slice._dims[lower] = Dimension(_dims[lower].start(), _dims[lower].start() + 1, 1); |
| 195 | } |
| 196 | return true; |
| 197 | } |
| 198 | } |
| 199 | |
| 200 | // It was the last slice |
| 201 | return false; // Iteration over |
| 202 | } |
| 203 | |
| 204 | template <unsigned int window_dimension> |
| 205 | inline Window Window::first_slice_window() const |
| 206 | { |
| 207 | Window slice; |
| 208 | |
| 209 | std::copy_n(_dims.begin(), window_dimension, slice._dims.begin()); |
| 210 | |
| 211 | //Initialise higher dimensions to be the first slice. |
| 212 | for(unsigned int n = window_dimension; n < Coordinates::num_max_dimensions; ++n) |
| 213 | { |
| 214 | slice._dims[n] = Dimension(_dims[n].start(), _dims[n].start() + 1, 1); |
| 215 | } |
| 216 | |
| 217 | return slice; |
| 218 | } |
| 219 | |
SiCong Li | 86b5333 | 2017-08-23 11:02:43 +0100 | [diff] [blame] | 220 | inline void Window::use_tensor_dimensions(const TensorShape &shape, size_t first_dimension) |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 221 | { |
SiCong Li | 86b5333 | 2017-08-23 11:02:43 +0100 | [diff] [blame] | 222 | for(unsigned int n = first_dimension; n < shape.num_dimensions(); ++n) |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 223 | { |
SiCong Li | 86b5333 | 2017-08-23 11:02:43 +0100 | [diff] [blame] | 224 | set(n, Window::Dimension(0, std::max(shape[n], static_cast<size_t>(1)))); |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 225 | } |
| 226 | } |
| 227 | } |