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/NESobel3x3Kernel.cpp | 269 +++++++++++++++++++++++++++++ 1 file changed, 269 insertions(+) create mode 100644 src/core/NEON/kernels/NESobel3x3Kernel.cpp (limited to 'src/core/NEON/kernels/NESobel3x3Kernel.cpp') diff --git a/src/core/NEON/kernels/NESobel3x3Kernel.cpp b/src/core/NEON/kernels/NESobel3x3Kernel.cpp new file mode 100644 index 0000000000..ab08a1cfeb --- /dev/null +++ b/src/core/NEON/kernels/NESobel3x3Kernel.cpp @@ -0,0 +1,269 @@ +/* + * 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/NESobel3x3Kernel.h" + +#include "arm_compute/core/Coordinates.h" +#include "arm_compute/core/Error.h" +#include "arm_compute/core/Helpers.h" +#include "arm_compute/core/ITensor.h" +#include "arm_compute/core/Types.h" +#include "arm_compute/core/Validate.h" + +#include +#include + +using namespace arm_compute; + +NESobel3x3Kernel::NESobel3x3Kernel() + : _run_sobel_x(false), _run_sobel_y(false), _input(nullptr), _output_x(nullptr), _output_y(nullptr) +{ +} + +BorderSize NESobel3x3Kernel::border_size() const +{ + return BorderSize(1); +} + +void NESobel3x3Kernel::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)); + + _run_sobel_x = output_x != nullptr; + _run_sobel_y = output_y != nullptr; + + if(_run_sobel_x) + { + ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(output_x, 1, DataType::S16); + } + + if(_run_sobel_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; + + // Configure kernel window + 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; + + Window win = calculate_max_window(*input->info(), Steps(num_elems_processed_per_iteration), border_undefined, border_size()); + AccessWindowHorizontal output_x_access(output_x == nullptr ? nullptr : output_x->info(), 0, num_elems_written_per_iteration); + AccessWindowHorizontal output_y_access(output_y == nullptr ? nullptr : output_y->info(), 0, num_elems_written_per_iteration); + + update_window_and_padding(win, + AccessWindowRectangle(input->info(), -border_size().left, -border_size().top, num_elems_read_per_iteration, num_rows_read_per_iteration), + output_x_access, + output_y_access); + + output_x_access.set_valid_region(win, input->info()->valid_region(), border_undefined, border_size()); + output_y_access.set_valid_region(win, input->info()->valid_region(), border_undefined, border_size()); + + INEKernel::configure(win); +} + +void NESobel3x3Kernel::run(const Window &window) +{ + ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this); + ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(INEKernel::window(), window); + + const unsigned char *const input_top_ptr = _input->ptr_to_element(Coordinates(-1, -1)); + const unsigned char *const input_mid_ptr = _input->ptr_to_element(Coordinates(-1, 0)); + const unsigned char *const input_bot_ptr = _input->ptr_to_element(Coordinates(-1, 1)); + + Iterator input(_input, window); + Iterator output_y; + Iterator output_x; + + if(_run_sobel_y) + { + output_y = Iterator(_output_y, window); + } + + if(_run_sobel_x) + { + output_x = Iterator(_output_x, window); + } + + static const int16x8_t two = vdupq_n_s16(2); + static const int16x8_t minustwo = vdupq_n_s16(-2); + + if(_run_sobel_y && _run_sobel_x) + { + execute_window_loop(window, [&](const Coordinates & id) + { + const uint8x16_t top_data = vld1q_u8(input_top_ptr + input.offset()); + const uint8x16_t mid_data = vld1q_u8(input_mid_ptr + input.offset()); + const uint8x16_t bot_data = vld1q_u8(input_bot_ptr + input.offset()); + + const int16x8x2_t top_s16 = + { + { + vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(top_data))), + vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(top_data))) + } + }; + const int16x8x2_t mid_s16 = + { + { + vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(mid_data))), + vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(mid_data))) + } + }; + const int16x8x2_t bot_s16 = + { + { + vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(bot_data))), + vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(bot_data))) + } + }; + + //SOBEL Y + //top left + int16x8_t out_y = vnegq_s16(top_s16.val[0]); + //top mid + out_y = vmlaq_s16(out_y, vextq_s16(top_s16.val[0], top_s16.val[1], 1), minustwo); + //top right + out_y = vsubq_s16(out_y, vextq_s16(top_s16.val[0], top_s16.val[1], 2)); + //bot left + out_y = vaddq_s16(out_y, bot_s16.val[0]); + //bot mid + out_y = vmlaq_s16(out_y, vextq_s16(bot_s16.val[0], bot_s16.val[1], 1), two); + //bot right + out_y = vaddq_s16(out_y, vextq_s16(bot_s16.val[0], bot_s16.val[1], 2)); + + vst1q_s16(reinterpret_cast(output_y.ptr()), out_y); + + //SOBEL X + //top left + int16x8_t out_x = vnegq_s16(top_s16.val[0]); + //top right + out_x = vaddq_s16(out_x, vextq_s16(top_s16.val[0], top_s16.val[1], 2)); + //mid left + out_x = vmlaq_s16(out_x, mid_s16.val[0], minustwo); + //mid right + out_x = vmlaq_s16(out_x, vextq_s16(mid_s16.val[0], mid_s16.val[1], 2), two); + //bot left + out_x = vsubq_s16(out_x, bot_s16.val[0]); + //bot right + out_x = vaddq_s16(out_x, vextq_s16(bot_s16.val[0], bot_s16.val[1], 2)); + + vst1q_s16(reinterpret_cast(output_x.ptr()), out_x); + }, + input, output_x, output_y); + } + else if(_run_sobel_x) + { + execute_window_loop(window, [&](const Coordinates & id) + { + const uint8x16_t top_data = vld1q_u8(input_top_ptr + input.offset()); + const uint8x16_t mid_data = vld1q_u8(input_mid_ptr + input.offset()); + const uint8x16_t bot_data = vld1q_u8(input_bot_ptr + input.offset()); + + const int16x8x2_t top_s16 = + { + { + vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(top_data))), + vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(top_data))) + } + }; + const int16x8x2_t mid_s16 = + { + { + vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(mid_data))), + vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(mid_data))) + } + }; + const int16x8x2_t bot_s16 = + { + { + vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(bot_data))), + vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(bot_data))) + } + }; + + //SOBEL X + //top left + int16x8_t out = vnegq_s16(top_s16.val[0]); + //top right + out = vaddq_s16(out, vextq_s16(top_s16.val[0], top_s16.val[1], 2)); + //mid left + out = vmlaq_s16(out, mid_s16.val[0], minustwo); + //mid right + out = vmlaq_s16(out, vextq_s16(mid_s16.val[0], mid_s16.val[1], 2), two); + //bot left + out = vsubq_s16(out, bot_s16.val[0]); + //bot right + out = vaddq_s16(out, vextq_s16(bot_s16.val[0], bot_s16.val[1], 2)); + + vst1q_s16(reinterpret_cast(output_x.ptr()), out); + }, + input, output_x); + } + else if(_run_sobel_y) + { + execute_window_loop(window, [&](const Coordinates & id) + { + const uint8x16_t top_data = vld1q_u8(input_top_ptr + input.offset()); + const uint8x16_t bot_data = vld1q_u8(input_bot_ptr + input.offset()); + + const int16x8x2_t top_s16 = + { + { + vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(top_data))), + vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(top_data))) + } + }; + const int16x8x2_t bot_s16 = + { + { + vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(bot_data))), + vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(bot_data))) + } + }; + + //SOBEL Y + //top left + int16x8_t out = vnegq_s16(top_s16.val[0]); + //top mid + out = vmlaq_s16(out, vextq_s16(top_s16.val[0], top_s16.val[1], 1), minustwo); + //top right + out = vsubq_s16(out, vextq_s16(top_s16.val[0], top_s16.val[1], 2)); + //bot left + out = vaddq_s16(out, bot_s16.val[0]); + //bot mid + out = vmlaq_s16(out, vextq_s16(bot_s16.val[0], bot_s16.val[1], 1), two); + //bot right + out = vaddq_s16(out, vextq_s16(bot_s16.val[0], bot_s16.val[1], 2)); + + vst1q_s16(reinterpret_cast(output_y.ptr()), out); + }, + input, output_y); + } +} -- cgit v1.2.1