src/core/NEON/kernels/NEBox3x3Kernel.cpp

   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/NEBox3x3Kernel.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 #include <arm_neon.h>
  33
  34 using namespace arm_compute;
  35
  36 #ifdef ARM_COMPUTE_ENABLE_FP16
  37 void NEBox3x3FP16Kernel::run(const Window &window)
  38 {
  39     ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this);
  40     ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(INESimpleKernel::window(), window);
  41
  42     Iterator input(_input, window);
  43     Iterator output(_output, window);
  44
  45     unsigned char *const input_top_ptr = _input->ptr_to_element(Coordinates(-1, -1));
  46     unsigned char *const input_mid_ptr = _input->ptr_to_element(Coordinates(-1, 0));
  47     unsigned char *const input_bot_ptr = _input->ptr_to_element(Coordinates(-1, +1));
  48
  49     const float16x8_t oneovernine = vdupq_n_f16(1.0f / 9.0f);
  50
  51     execute_window_loop(window, [&](const Coordinates & id)
  52     {
  53         const uint8x16_t top_data = vld1q_u8(input_top_ptr + input.offset());
  54         const uint8x16_t mid_data = vld1q_u8(input_mid_ptr + input.offset());
  55         const uint8x16_t bot_data = vld1q_u8(input_bot_ptr + input.offset());
  56
  57         const float16x8x2_t top_f16 =
  58         {
  59             {
  60                 vcvtq_f16_u16(vmovl_u8(vget_low_u8(top_data))),
  61                 vcvtq_f16_u16(vmovl_u8(vget_high_u8(top_data)))
  62             }
  63         };
  64
  65         const float16x8x2_t mid_f16 =
  66         {
  67             {
  68                 vcvtq_f16_u16(vmovl_u8(vget_low_u8(mid_data))),
  69                 vcvtq_f16_u16(vmovl_u8(vget_high_u8(mid_data)))
  70             }
  71         };
  72
  73         const float16x8x2_t bot_f16 =
  74         {
  75             {
  76                 vcvtq_f16_u16(vmovl_u8(vget_low_u8(bot_data))),
  77                 vcvtq_f16_u16(vmovl_u8(vget_high_u8(bot_data)))
  78             }
  79         };
  80
  81         //top left
  82         float16x8_t out = top_f16.val[0];
  83         //top mid
  84         out = vaddq_f16(out, vextq_f16(top_f16.val[0], top_f16.val[1], 1));
  85         //top right
  86         out = vaddq_f16(out, vextq_f16(top_f16.val[0], top_f16.val[1], 2));
  87         //mid left
  88         out = vaddq_f16(out, mid_f16.val[0]);
  89         //mid mid
  90         out = vaddq_f16(out, vextq_f16(mid_f16.val[0], mid_f16.val[1], 1));
  91         //mid right
  92         out = vaddq_f16(out, vextq_f16(mid_f16.val[0], mid_f16.val[1], 2));
  93         //bot left
  94         out = vaddq_f16(out, bot_f16.val[0]);
  95         //bot mid
  96         out = vaddq_f16(out, vextq_f16(bot_f16.val[0], bot_f16.val[1], 1));
  97         //bot right
  98         out = vaddq_f16(out, vextq_f16(bot_f16.val[0], bot_f16.val[1], 2));
  99
 100         out = vmulq_f16(out, oneovernine);
 101
 102         vst1_u8(output.ptr(), vqmovun_s16(vcvtq_s16_f16(out)));
 103     },
 104     input, output);
 105 }
 106 #endif
 107
 108 BorderSize NEBox3x3Kernel::border_size() const
 109 {
 110     return BorderSize(1);
 111 }
 112
 113 void NEBox3x3Kernel::configure(const ITensor *input, ITensor *output, bool border_undefined)
 114 {
 115     ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, 1, DataType::U8);
 116     ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(output, 1, DataType::U8);
 117
 118     _input  = input;
 119     _output = output;
 120
 121     constexpr unsigned int num_elems_processed_per_iteration = 8;
 122     constexpr unsigned int num_elems_read_per_iteration      = 16;
 123     constexpr unsigned int num_elems_written_per_iteration   = 8;
 124     constexpr unsigned int num_rows_read_per_iteration       = 3;
 125     constexpr int          rect_offset_xy                    = -1;
 126
 127     // Configure kernel window
 128     Window                 win = calculate_max_window(*input->info(), Steps(num_elems_processed_per_iteration), border_undefined, border_size());
 129     AccessWindowHorizontal output_access(output->info(), 0, num_elems_written_per_iteration);
 130
 131     update_window_and_padding(win, AccessWindowRectangle(input->info(), rect_offset_xy, rect_offset_xy, num_elems_read_per_iteration, num_rows_read_per_iteration), output_access);
 132
 133     output_access.set_valid_region(win, input->info()->valid_region(), border_undefined, border_size());
 134
 135     INEKernel::configure(win);
 136 }
 137
 138 void NEBox3x3Kernel::run(const Window &window)
 139 {
 140     ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this);
 141     ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(INESimpleKernel::window(), window);
 142
 143     Iterator input(_input, window);
 144     Iterator output(_output, window);
 145
 146     unsigned char *const input_top_ptr = _input->ptr_to_element(Coordinates(-1, -1));
 147     unsigned char *const input_mid_ptr = _input->ptr_to_element(Coordinates(-1, 0));
 148     unsigned char *const input_bot_ptr = _input->ptr_to_element(Coordinates(-1, +1));
 149
 150     const float32x4_t oneovernine = vdupq_n_f32(1.0f / 9.0f);
 151
 152     execute_window_loop(window, [&](const Coordinates & id)
 153     {
 154         const uint8x16_t top_data = vld1q_u8(input_top_ptr + input.offset());
 155         const uint8x16_t mid_data = vld1q_u8(input_mid_ptr + input.offset());
 156         const uint8x16_t bot_data = vld1q_u8(input_bot_ptr + input.offset());
 157
 158         const int16x8x2_t top_s16 =
 159         {
 160             {
 161                 vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(top_data))),
 162                 vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(top_data)))
 163             }
 164         };
 165         const int16x8x2_t mid_s16 =
 166         {
 167             {
 168                 vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(mid_data))),
 169                 vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(mid_data)))
 170             }
 171         };
 172         const int16x8x2_t bot_s16 =
 173         {
 174             {
 175                 vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(bot_data))),
 176                 vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(bot_data)))
 177             }
 178         };
 179
 180         //top left
 181         int16x8_t out = top_s16.val[0];
 182         //top mid
 183         out = vaddq_s16(out, vextq_s16(top_s16.val[0], top_s16.val[1], 1));
 184         //top right
 185         out = vaddq_s16(out, vextq_s16(top_s16.val[0], top_s16.val[1], 2));
 186         //mid left
 187         out = vaddq_s16(out, mid_s16.val[0]);
 188         //mid mid
 189         out = vaddq_s16(out, vextq_s16(mid_s16.val[0], mid_s16.val[1], 1));
 190         //mid right
 191         out = vaddq_s16(out, vextq_s16(mid_s16.val[0], mid_s16.val[1], 2));
 192         //bot left
 193         out = vaddq_s16(out, bot_s16.val[0]);
 194         //bot mid
 195         out = vaddq_s16(out, vextq_s16(bot_s16.val[0], bot_s16.val[1], 1));
 196         //bot right
 197         out = vaddq_s16(out, vextq_s16(bot_s16.val[0], bot_s16.val[1], 2));
 198
 199         float32x4_t outfloathigh = vcvtq_f32_s32(vmovl_s16(vget_high_s16(out)));
 200         float32x4_t outfloatlow  = vcvtq_f32_s32(vmovl_s16(vget_low_s16(out)));
 201
 202         outfloathigh = vmulq_f32(outfloathigh, oneovernine);
 203         outfloatlow  = vmulq_f32(outfloatlow, oneovernine);
 204
 205         out = vcombine_s16(vqmovn_s32(vcvtq_s32_f32(outfloatlow)),
 206                            vqmovn_s32(vcvtq_s32_f32(outfloathigh)));
 207
 208         vst1_u8(output.ptr(), vqmovun_s16(out));
 209     },
 210     input, output);
 211 }