/* * 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/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, const ThreadInfo &info) { ARM_COMPUTE_UNUSED(info); 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 &) { 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 &) { 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 &) { 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); } }