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/*
* Copyright (c) 2016, 2017 ARM Limited.
*
* SPDX-License-Identifier: MIT
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "arm_compute/core/NEON/kernels/NEDilateKernel.h"
#include "arm_compute/core/Helpers.h"
#include "arm_compute/core/ITensor.h"
#include "arm_compute/core/NEON/INEKernel.h"
#include "arm_compute/core/TensorInfo.h"
#include "arm_compute/core/Validate.h"
#include <arm_neon.h>
#include <cstddef>
#include <cstdint>
using namespace arm_compute;
namespace arm_compute
{
class Coordinates;
} // namespace arm_compute
BorderSize NEDilateKernel::border_size() const
{
return BorderSize(1);
}
void NEDilateKernel::configure(const ITensor *input, ITensor *output, bool border_undefined)
{
_input = input;
_output = output;
constexpr unsigned int num_elems_processed_per_iteration = 8;
constexpr unsigned int num_elems_read_per_iteration = 16;
constexpr unsigned int num_elems_written_per_iteration = 8;
constexpr unsigned int num_rows_read_per_iteration = 3;
// Configure kernel window
Window win = calculate_max_window(*input->info(), Steps(num_elems_processed_per_iteration), border_undefined, border_size());
AccessWindowHorizontal output_access(output->info(), 0, num_elems_written_per_iteration);
AccessWindowRectangle input_access(input->info(), -border_size().left, -border_size().top, num_elems_read_per_iteration, num_rows_read_per_iteration);
update_window_and_padding(win, input_access, output_access);
output_access.set_valid_region(win, input->info()->valid_region(), border_undefined, border_size());
INEKernel::configure(win);
}
void NEDilateKernel::run(const Window &window, const ThreadInfo &info)
{
ARM_COMPUTE_UNUSED(info);
ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this);
ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(INESimpleKernel::window(), window);
Iterator in(_input, window);
Iterator out(_output, window);
const size_t in_stride = _input->info()->strides_in_bytes()[1];
execute_window_loop(window, [&](const Coordinates &)
{
uint8_t *in_ptr = in.ptr() - 1;
const uint8x16_t top_data = vld1q_u8(in_ptr - in_stride);
const uint8x16_t mid_data = vld1q_u8(in_ptr);
const uint8x16_t bot_data = vld1q_u8(in_ptr + in_stride);
uint8x8_t top_high_data = vget_high_u8(top_data);
uint8x8_t top_low_data = vget_low_u8(top_data);
uint8x8_t mid_high_data = vget_high_u8(mid_data);
uint8x8_t mid_low_data = vget_low_u8(mid_data);
uint8x8_t bot_high_data = vget_high_u8(bot_data);
uint8x8_t bot_low_data = vget_low_u8(bot_data);
uint8x8_t p0, p1;
p0 = top_low_data;
p1 = vext_u8(top_low_data, top_high_data, 1);
p0 = vmax_u8(p0, p1);
p1 = vext_u8(top_low_data, top_high_data, 2);
p0 = vmax_u8(p0, p1);
p1 = mid_low_data;
p0 = vmax_u8(p0, p1);
p1 = vext_u8(mid_low_data, mid_high_data, 1);
p0 = vmax_u8(p0, p1);
p1 = vext_u8(mid_low_data, mid_high_data, 2);
p0 = vmax_u8(p0, p1);
p1 = bot_low_data;
p0 = vmax_u8(p0, p1);
p1 = vext_u8(bot_low_data, bot_high_data, 1);
p0 = vmax_u8(p0, p1);
p1 = vext_u8(bot_low_data, bot_high_data, 2);
p0 = vmax_u8(p0, p1);
vst1_u8(out.ptr(), p0);
},
in, out);
}
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