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 | #include "arm_compute/core/NEON/kernels/NEMedian3x3Kernel.h" |
| 25 | |
| 26 | #include "arm_compute/core/Coordinates.h" |
| 27 | #include "arm_compute/core/Helpers.h" |
| 28 | #include "arm_compute/core/IAccessWindow.h" |
| 29 | #include "arm_compute/core/ITensor.h" |
| 30 | #include "arm_compute/core/NEON/INEKernel.h" |
| 31 | #include "arm_compute/core/Validate.h" |
| 32 | |
| 33 | #include <arm_neon.h> |
| 34 | #include <utility> |
| 35 | |
| 36 | using namespace arm_compute; |
| 37 | |
| 38 | namespace |
| 39 | { |
| 40 | inline void sort(uint8x8_t &a, uint8x8_t &b) |
| 41 | { |
| 42 | const uint8x8_t min = vmin_u8(a, b); |
| 43 | const uint8x8_t max = vmax_u8(a, b); |
| 44 | a = min; |
| 45 | b = max; |
| 46 | } |
| 47 | } // namespace |
| 48 | |
| 49 | BorderSize NEMedian3x3Kernel::border_size() const |
| 50 | { |
| 51 | return BorderSize(1); |
| 52 | } |
| 53 | |
| 54 | void NEMedian3x3Kernel::configure(const ITensor *input, ITensor *output, bool border_undefined) |
| 55 | { |
| 56 | _input = input; |
| 57 | _output = output; |
| 58 | |
| 59 | // Configure kernel window |
| 60 | constexpr unsigned int num_elems_processed_per_iteration = 8; |
| 61 | constexpr unsigned int num_elems_read_per_iteration = 16; |
| 62 | constexpr unsigned int num_elems_written_per_iteration = 8; |
| 63 | constexpr unsigned int num_rows_read_per_iteration = 3; |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 64 | |
| 65 | Window win = calculate_max_window(*input->info(), Steps(num_elems_processed_per_iteration), border_undefined, border_size()); |
| 66 | AccessWindowHorizontal output_access(output->info(), 0, num_elems_written_per_iteration); |
| 67 | |
| 68 | update_window_and_padding(win, |
Isabella Gottardi | 6eb9fca | 2017-10-11 12:16:57 +0100 | [diff] [blame] | 69 | AccessWindowRectangle(input->info(), -border_size().left, -border_size().top, num_elems_read_per_iteration, num_rows_read_per_iteration), |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 70 | output_access); |
| 71 | |
| 72 | output_access.set_valid_region(win, input->info()->valid_region(), border_undefined, border_size()); |
| 73 | |
| 74 | INEKernel::configure(win); |
| 75 | } |
| 76 | |
Moritz Pflanzer | c186b57 | 2017-09-07 09:48:04 +0100 | [diff] [blame] | 77 | void NEMedian3x3Kernel::run(const Window &window, const ThreadInfo &info) |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 78 | { |
Moritz Pflanzer | c186b57 | 2017-09-07 09:48:04 +0100 | [diff] [blame] | 79 | ARM_COMPUTE_UNUSED(info); |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 80 | ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this); |
| 81 | ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(INESimpleKernel::window(), window); |
| 82 | |
| 83 | const unsigned char *input_bot_ptr = _input->ptr_to_element(Coordinates(-1, -1)); |
| 84 | const unsigned char *input_mid_ptr = _input->ptr_to_element(Coordinates(-1, 0)); |
| 85 | const unsigned char *input_top_ptr = _input->ptr_to_element(Coordinates(-1, +1)); |
| 86 | |
| 87 | Iterator input(_input, window); |
| 88 | Iterator output(_output, window); |
| 89 | |
| 90 | execute_window_loop(window, [&](const Coordinates & id) |
| 91 | { |
| 92 | const uint8x16_t top_data = vld1q_u8(input_top_ptr + input.offset()); |
| 93 | const uint8x16_t mid_data = vld1q_u8(input_mid_ptr + input.offset()); |
| 94 | const uint8x16_t bot_data = vld1q_u8(input_bot_ptr + input.offset()); |
| 95 | |
| 96 | uint8x8_t p0 = vget_low_u8(top_data); |
| 97 | uint8x8_t p1 = vext_u8(vget_low_u8(top_data), vget_high_u8(top_data), 1); |
| 98 | uint8x8_t p2 = vext_u8(vget_low_u8(top_data), vget_high_u8(top_data), 2); |
| 99 | uint8x8_t p3 = vget_low_u8(mid_data); |
| 100 | uint8x8_t p4 = vext_u8(vget_low_u8(mid_data), vget_high_u8(mid_data), 1); |
| 101 | uint8x8_t p5 = vext_u8(vget_low_u8(mid_data), vget_high_u8(mid_data), 2); |
| 102 | uint8x8_t p6 = vget_low_u8(bot_data); |
| 103 | uint8x8_t p7 = vext_u8(vget_low_u8(bot_data), vget_high_u8(bot_data), 1); |
| 104 | uint8x8_t p8 = vext_u8(vget_low_u8(bot_data), vget_high_u8(bot_data), 2); |
| 105 | |
| 106 | sort(p1, p2); |
| 107 | sort(p4, p5); |
| 108 | sort(p7, p8); |
| 109 | |
| 110 | sort(p0, p1); |
| 111 | sort(p3, p4); |
| 112 | sort(p6, p7); |
| 113 | |
| 114 | sort(p1, p2); |
| 115 | sort(p4, p5); |
| 116 | sort(p7, p8); |
| 117 | |
| 118 | sort(p0, p3); |
| 119 | sort(p5, p8); |
| 120 | sort(p4, p7); |
| 121 | |
| 122 | sort(p3, p6); |
| 123 | sort(p1, p4); |
| 124 | sort(p2, p5); |
| 125 | |
| 126 | sort(p4, p7); |
| 127 | sort(p4, p2); |
| 128 | sort(p6, p4); |
| 129 | |
| 130 | sort(p4, p2); |
| 131 | |
| 132 | vst1_u8(output.ptr(), p4); |
| 133 | }, |
| 134 | input, output); |
| 135 | } |