COMPMID-344 Updated doxygen
Change-Id: I32f7b84daa560e460b77216add529c8fa8b327ae
diff --git a/src/core/NEON/kernels/NEGaussian5x5Kernel.cpp b/src/core/NEON/kernels/NEGaussian5x5Kernel.cpp
new file mode 100644
index 0000000..f872cc2
--- /dev/null
+++ b/src/core/NEON/kernels/NEGaussian5x5Kernel.cpp
@@ -0,0 +1,203 @@
+/*
+ * 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/NEGaussian5x5Kernel.h"
+
+#include "arm_compute/core/Coordinates.h"
+#include "arm_compute/core/Helpers.h"
+#include "arm_compute/core/ITensor.h"
+#include "arm_compute/core/NEON/INEKernel.h"
+#include "arm_compute/core/Types.h"
+#include "arm_compute/core/Validate.h"
+#include "arm_compute/core/Window.h"
+
+#include <arm_neon.h>
+#include <cstddef>
+#include <cstdint>
+
+using namespace arm_compute;
+
+NEGaussian5x5HorKernel::NEGaussian5x5HorKernel()
+ : _border_size(0)
+{
+}
+
+BorderSize NEGaussian5x5HorKernel::border_size() const
+{
+ return _border_size;
+}
+
+void NEGaussian5x5HorKernel::configure(const ITensor *input, ITensor *output, bool border_undefined)
+{
+ ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, 1, DataType::U8);
+ ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(output, 1, DataType::S16);
+
+ _input = input;
+ _output = output;
+ _border_size = BorderSize(border_undefined ? 0 : 2, 2);
+
+ // 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;
+
+ Window win = calculate_max_window_horizontal(*input->info(), Steps(num_elems_processed_per_iteration), border_undefined, border_size());
+ AccessWindowHorizontal output_access(output->info(), 0, num_elems_written_per_iteration);
+
+ update_window_and_padding(win,
+ AccessWindowHorizontal(input->info(), -border_size().left, num_elems_read_per_iteration),
+ output_access);
+
+ output_access.set_valid_region(win, input->info()->valid_region(), border_undefined, border_size());
+
+ INEKernel::configure(win);
+}
+
+void NEGaussian5x5HorKernel::run(const Window &window)
+{
+ ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this);
+ ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(INEKernel::window(), window);
+
+ Window win_in(window);
+ win_in.shift(Window::DimX, -2);
+
+ Iterator input(_input, win_in);
+ Iterator output(_output, window);
+
+ static const int16x8_t six = vdupq_n_s16(6);
+ static const int16x8_t four = vdupq_n_s16(4);
+
+ execute_window_loop(window, [&](const Coordinates & id)
+ {
+ uint8x16_t data = vld1q_u8(input.ptr());
+
+ const int16x8x2_t data_s16 =
+ {
+ {
+ vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(data))),
+ vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(data)))
+ }
+ };
+
+ int16x8_t out = vaddq_s16(data_s16.val[0], vextq_s16(data_s16.val[0], data_s16.val[1], 4));
+ out = vmlaq_s16(out, vextq_s16(data_s16.val[0], data_s16.val[1], 1), four);
+ out = vmlaq_s16(out, vextq_s16(data_s16.val[0], data_s16.val[1], 2), six);
+ out = vmlaq_s16(out, vextq_s16(data_s16.val[0], data_s16.val[1], 3), four);
+
+ vst1q_s16(reinterpret_cast<int16_t *>(output.ptr()), out);
+ },
+ input, output);
+}
+
+BorderSize NEGaussian5x5VertKernel::border_size() const
+{
+ return BorderSize(2, 0);
+}
+
+void NEGaussian5x5VertKernel::configure(const ITensor *input, ITensor *output, bool border_undefined)
+{
+ ARM_COMPUTE_ERROR_ON_FORMAT_NOT_IN(input, Format::S16);
+ ARM_COMPUTE_ERROR_ON_FORMAT_NOT_IN(output, Format::U8);
+
+ _input = input;
+ _output = output;
+
+ // Configure kernel window
+ constexpr unsigned int num_elems_processed_per_iteration = 16;
+ constexpr unsigned int num_elems_read_per_iteration = 32;
+ constexpr unsigned int num_elems_written_per_iteration = 16;
+ constexpr unsigned int num_rows_read_per_iteration = 5;
+
+ Window win = calculate_max_window(*input->info(), Steps(num_elems_processed_per_iteration), border_undefined, border_size());
+ AccessWindowHorizontal output_access(output->info(), 0, num_elems_written_per_iteration);
+
+ update_window_and_padding(win,
+ AccessWindowRectangle(input->info(), 0, -border_size().top, num_elems_read_per_iteration, num_rows_read_per_iteration),
+ output_access);
+
+ output_access.set_valid_region(win, input->info()->valid_region(), border_undefined, border_size());
+
+ INEKernel::configure(win);
+}
+
+void NEGaussian5x5VertKernel::run(const Window &window)
+{
+ ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this);
+ ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(INESimpleKernel::window(), window);
+
+ Iterator input(_input, window);
+ Iterator output(_output, window);
+
+ const uint8_t *input_top2_ptr = _input->ptr_to_element(Coordinates(0, -2));
+ const uint8_t *input_top_ptr = _input->ptr_to_element(Coordinates(0, -1));
+ const uint8_t *input_mid_ptr = _input->ptr_to_element(Coordinates(0, 0));
+ const uint8_t *input_low_ptr = _input->ptr_to_element(Coordinates(0, 1));
+ const uint8_t *input_low2_ptr = _input->ptr_to_element(Coordinates(0, 2));
+
+ const uint16x8_t six = vdupq_n_u16(6);
+ const uint16x8_t four = vdupq_n_u16(4);
+
+ execute_window_loop(window, [&](const Coordinates & id)
+ {
+ const size_t input_offset_high_s16 = input.offset();
+ const size_t input_offset_low_s16 = input.offset() + 16;
+
+ //HIGH DATA
+ //top2
+ uint16x8_t data_high = vreinterpretq_u16_s16(vld1q_s16(reinterpret_cast<const int16_t *>(input_top2_ptr + input_offset_high_s16)));
+ uint16x8_t out_high = data_high;
+ //top
+ data_high = vreinterpretq_u16_s16(vld1q_s16(reinterpret_cast<const int16_t *>(input_top_ptr + input_offset_high_s16)));
+ out_high = vmlaq_u16(out_high, data_high, four);
+ //mid
+ data_high = vreinterpretq_u16_s16(vld1q_s16(reinterpret_cast<const int16_t *>(input_mid_ptr + input_offset_high_s16)));
+ out_high = vmlaq_u16(out_high, data_high, six);
+ //low
+ data_high = vreinterpretq_u16_s16(vld1q_s16(reinterpret_cast<const int16_t *>(input_low_ptr + input_offset_high_s16)));
+ out_high = vmlaq_u16(out_high, data_high, four);
+ //low2
+ data_high = vreinterpretq_u16_s16(vld1q_s16(reinterpret_cast<const int16_t *>(input_low2_ptr + input_offset_high_s16)));
+ out_high = vaddq_u16(out_high, data_high);
+
+ //LOW DATA
+ //top2
+ uint16x8_t data_low = vreinterpretq_u16_s16(vld1q_s16(reinterpret_cast<const int16_t *>(input_top2_ptr + input_offset_low_s16)));
+ uint16x8_t out_low = data_low;
+ //top
+ data_low = vreinterpretq_u16_s16(vld1q_s16(reinterpret_cast<const int16_t *>(input_top_ptr + input_offset_low_s16)));
+ out_low = vmlaq_u16(out_low, data_low, four);
+ //mid
+ data_low = vreinterpretq_u16_s16(vld1q_s16(reinterpret_cast<const int16_t *>(input_mid_ptr + input_offset_low_s16)));
+ out_low = vmlaq_u16(out_low, data_low, six);
+ //low
+ data_low = vreinterpretq_u16_s16(vld1q_s16(reinterpret_cast<const int16_t *>(input_low_ptr + input_offset_low_s16)));
+ out_low = vmlaq_u16(out_low, data_low, four);
+ //low2
+ data_low = vreinterpretq_u16_s16(vld1q_s16(reinterpret_cast<const int16_t *>(input_low2_ptr + input_offset_low_s16)));
+ out_low = vaddq_u16(out_low, data_low);
+
+ vst1q_u8(output.ptr(), vcombine_u8(vqshrn_n_u16(out_high, 8),
+ vqshrn_n_u16(out_low, 8)));
+ },
+ input, output);
+}