From 6ff3b19ee6120edf015fad8caab2991faa3070af Mon Sep 17 00:00:00 2001 From: Anthony Barbier Date: Mon, 4 Sep 2017 18:44:23 +0100 Subject: COMPMID-344 Updated doxygen Change-Id: I32f7b84daa560e460b77216add529c8fa8b327ae --- src/core/NEON/kernels/NEDerivativeKernel.cpp | 224 +++++++++++++++++++++++++++ 1 file changed, 224 insertions(+) create mode 100644 src/core/NEON/kernels/NEDerivativeKernel.cpp (limited to 'src/core/NEON/kernels/NEDerivativeKernel.cpp') diff --git a/src/core/NEON/kernels/NEDerivativeKernel.cpp b/src/core/NEON/kernels/NEDerivativeKernel.cpp new file mode 100644 index 0000000000..bf7e0972d5 --- /dev/null +++ b/src/core/NEON/kernels/NEDerivativeKernel.cpp @@ -0,0 +1,224 @@ +/* + * 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/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); + AccessWindowHorizontal in_x_access(input->info(), -border_size().left, num_elems_processed_per_iteration); + AccessWindowRectangle in_y_access(input->info(), 0, -border_size().left, num_elems_processed_per_iteration, num_rows_read_per_iteration); + AccessWindowRectangle in_xy_access(input->info(), -border_size().left, -border_size().top, num_elems_processed_per_iteration, 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 & id) + { + /* 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 & id) + { + /* 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 & id) + { + /* 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) +{ + 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); +} -- cgit v1.2.1