/* * Copyright (c) 2016-2019 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/NEDerivativeKernel.h" #include "arm_compute/core/Error.h" #include "arm_compute/core/Helpers.h" #include "arm_compute/core/ITensor.h" #include "arm_compute/core/TensorInfo.h" #include "arm_compute/core/Types.h" #include "arm_compute/core/Validate.h" #include #include #include using namespace arm_compute; namespace arm_compute { class Coordinates; } // namespace arm_compute NEDerivativeKernel::NEDerivativeKernel() : _func(nullptr), _input(nullptr), _output_x(nullptr), _output_y(nullptr) { } BorderSize NEDerivativeKernel::border_size() const { return BorderSize(1); } void NEDerivativeKernel::configure(const ITensor *input, ITensor *output_x, ITensor *output_y, bool border_undefined) { ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, 1, DataType::U8); ARM_COMPUTE_ERROR_ON((output_x == nullptr) && (output_y == nullptr)); const bool run_der_x = output_x != nullptr; const bool run_der_y = output_y != nullptr; if(run_der_x) { ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(output_x, 1, DataType::S16); } if(run_der_y) { ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(output_y, 1, DataType::S16); } _input = input; _output_x = output_x; _output_y = output_y; constexpr unsigned int num_elems_processed_per_iteration = 16; constexpr unsigned int num_rows_read_per_iteration = 3; Window win = calculate_max_window(*input->info(), Steps(num_elems_processed_per_iteration), border_undefined, border_size()); AccessWindowHorizontal out_x_access(output_x == nullptr ? nullptr : output_x->info(), 0, num_elems_processed_per_iteration); AccessWindowHorizontal out_y_access(output_y == nullptr ? nullptr : output_y->info(), 0, num_elems_processed_per_iteration); // TODO(COMPMID-1503) Fix x-access input bug in NEON kernel instead of '+2' AccessWindowHorizontal in_x_access(input->info(), -border_size().left, num_elems_processed_per_iteration + 2); AccessWindowRectangle in_y_access(input->info(), 0, -border_size().left, num_elems_processed_per_iteration, num_rows_read_per_iteration); // TODO(COMPMID-1503) Fix x-access input bug in NEON kernel instead of '+2' AccessWindowRectangle in_xy_access(input->info(), -border_size().left, -border_size().top, num_elems_processed_per_iteration + 2, num_rows_read_per_iteration); if(run_der_x && run_der_y) { _func = &NEDerivativeKernel::derivative_xy; update_window_and_padding(win, in_xy_access, out_x_access, out_y_access); out_y_access.set_valid_region(win, input->info()->valid_region(), border_undefined, border_size()); out_x_access.set_valid_region(win, input->info()->valid_region(), border_undefined, border_size()); } else { if(run_der_x) { _func = &NEDerivativeKernel::derivative_x; update_window_and_padding(win, in_x_access, out_x_access); out_x_access.set_valid_region(win, input->info()->valid_region(), border_undefined, border_size()); } else if(run_der_y) { _func = &NEDerivativeKernel::derivative_y; update_window_and_padding(win, in_y_access, out_y_access); out_y_access.set_valid_region(win, input->info()->valid_region(), border_undefined, border_size()); } else { ARM_COMPUTE_ERROR("At least one output must be NOT NULL"); } } INEKernel::configure(win); } void NEDerivativeKernel::derivative_x(const Window &window) { Iterator in(_input, window); Iterator out_x(_output_x, window); /* Apply 1-D centered point discrete derivative mask ([-1 0 1]) along the X direction */ execute_window_loop(window, [&](const Coordinates &) { /* Load left and right data */ const uint8x16_t l_data = vld1q_u8(in.ptr() - 1); const uint8x16_t r_data = vld1q_u8(in.ptr() + 1); /* Cast to int16 and perform the subtraction between the right and left data */ const int16x8_t out0 = vsubq_s16(vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(r_data))), vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(l_data)))); /* Cast to int16 and perform the subtraction between the right and left data */ const int16x8_t out1 = vsubq_s16(vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(r_data))), vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(l_data)))); /* Store result of derivative along the X direction */ vst1q_s16(reinterpret_cast(out_x.ptr()), out0); vst1q_s16(reinterpret_cast(out_x.ptr()) + 8, out1); }, in, out_x); } void NEDerivativeKernel::derivative_y(const Window &window) { Iterator in(_input, window); Iterator out_y(_output_y, window); const size_t stride = _input->info()->strides_in_bytes()[1]; /* Apply 1-D centered point discrete derivative mask ([-1 0 1]^T) along the Y direction */ execute_window_loop(window, [&](const Coordinates &) { /* Load top and bottom data */ const uint8x16_t t_data = vld1q_u8(in.ptr() - stride); const uint8x16_t b_data = vld1q_u8(in.ptr() + stride); /* Cast to int16 and perform the subtraction between the bottom and top data */ const int16x8_t out0 = vsubq_s16(vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(b_data))), vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(t_data)))); /* Cast to int16 and perform the subtraction between the bottom and top data */ const int16x8_t out1 = vsubq_s16(vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(b_data))), vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(t_data)))); /* Store result of derivative along the Y direction */ vst1q_s16(reinterpret_cast(out_y.ptr()), out0); vst1q_s16(reinterpret_cast(out_y.ptr()) + 8, out1); }, in, out_y); } void NEDerivativeKernel::derivative_xy(const Window &window) { Iterator in(_input, window); Iterator out_x(_output_x, window); Iterator out_y(_output_y, window); const size_t stride = _input->info()->strides_in_bytes()[1]; /* Apply 1-D centered point discrete derivative masks ([-1 0 1] and [-1 0 1]^T) along the X and Y directions */ execute_window_loop(window, [&](const Coordinates &) { /* Load top, bottom, left and right data */ const uint8x16_t t_data = vld1q_u8(in.ptr() - stride); const uint8x16_t b_data = vld1q_u8(in.ptr() + stride); const uint8x16_t l_data = vld1q_u8(in.ptr() - 1); const uint8x16_t r_data = vld1q_u8(in.ptr() + 1); /* Cast to int16 and perform the subtraction between the bottom and top data */ const int16x8_t out0 = vsubq_s16(vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(b_data))), vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(t_data)))); /* Cast to int16 and perform the subtraction between the bottom and top data */ const int16x8_t out1 = vsubq_s16(vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(b_data))), vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(t_data)))); /* Cast to int16 and perform the subtraction between the right and left data */ const int16x8_t out2 = vsubq_s16(vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(r_data))), vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(l_data)))); /* Cast to int16 and perform the subtraction between the right and left data */ const int16x8_t out3 = vsubq_s16(vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(r_data))), vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(l_data)))); /* Store result of derivative along the Y direction */ vst1q_s16(reinterpret_cast(out_y.ptr()), out0); vst1q_s16(reinterpret_cast(out_y.ptr()) + 8, out1); /* Store result of derivative along the X direction */ vst1q_s16(reinterpret_cast(out_x.ptr()), out2); vst1q_s16(reinterpret_cast(out_x.ptr()) + 8, out3); }, in, out_x, out_y); } void NEDerivativeKernel::run(const Window &window, const ThreadInfo &info) { ARM_COMPUTE_UNUSED(info); ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this); ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(INEKernel::window(), window); ARM_COMPUTE_ERROR_ON(_func == nullptr); (this->*_func)(window); }