/* * 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/NEScharr3x3Kernel.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; namespace { const int16x8_t three = vdupq_n_s16(3); const int16x8_t minus_three = vdupq_n_s16(-3); const int16x8_t ten = vdupq_n_s16(10); const int16x8_t minus_ten = vdupq_n_s16(-10); inline int16x8_t scharr_y(const int16x8x2_t &top, const int16x8x2_t &bottom) { // Top left int16x8_t out = vmulq_s16(top.val[0], minus_three); // Top center out = vmlaq_s16(out, vextq_s16(top.val[0], top.val[1], 1), minus_ten); // Top right out = vmlaq_s16(out, vextq_s16(top.val[0], top.val[1], 2), minus_three); // Bottom left out = vmlaq_s16(out, bottom.val[0], three); // Bottom center out = vmlaq_s16(out, vextq_s16(bottom.val[0], bottom.val[1], 1), ten); // Bottom right out = vmlaq_s16(out, vextq_s16(bottom.val[0], bottom.val[1], 2), three); return out; } inline int16x8_t scharr_x(const int16x8x2_t &top, const int16x8x2_t &middle, const int16x8x2_t &bottom) { // Top left int16x8_t out = vmulq_s16(top.val[0], minus_three); // Top right out = vmlaq_s16(out, vextq_s16(top.val[0], top.val[1], 2), three); // Middle left out = vmlaq_s16(out, middle.val[0], minus_ten); // Middle right out = vmlaq_s16(out, vextq_s16(middle.val[0], middle.val[1], 2), ten); // Bottom left out = vmlaq_s16(out, bottom.val[0], minus_three); // Bottom right out = vmlaq_s16(out, vextq_s16(bottom.val[0], bottom.val[1], 2), three); return out; } } // namespace NEScharr3x3Kernel::NEScharr3x3Kernel() : _run_scharr_x(false), _run_scharr_y(false), _input(nullptr), _output_x(nullptr), _output_y(nullptr) { } void NEScharr3x3Kernel::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_scharr_x = output_x != nullptr; _run_scharr_y = output_y != nullptr; if(_run_scharr_x) { ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(output_x, 1, DataType::S16); } if(_run_scharr_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); } BorderSize NEScharr3x3Kernel::border_size() const { return BorderSize(1); } void NEScharr3x3Kernel::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_scharr_y) { output_y = Iterator(_output_y, window); } if(_run_scharr_x) { output_x = Iterator(_output_x, window); } if(_run_scharr_x && _run_scharr_y) { 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))) } }; vst1q_s16(reinterpret_cast(output_x.ptr()), scharr_x(top_s16, mid_s16, bot_s16)); vst1q_s16(reinterpret_cast(output_y.ptr()), scharr_y(top_s16, bot_s16)); }, input, output_x, output_y); } else if(_run_scharr_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))) } }; vst1q_s16(reinterpret_cast(output_x.ptr()), scharr_x(top_s16, mid_s16, bot_s16)); }, input, output_x); } else if(_run_scharr_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))) } }; vst1q_s16(reinterpret_cast(output_y.ptr()), scharr_y(top_s16, bot_s16)); }, input, output_y); } }