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-rw-r--r--src/core/CL/kernels/CLGaussianPyramidKernel.cpp246
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diff --git a/src/core/CL/kernels/CLGaussianPyramidKernel.cpp b/src/core/CL/kernels/CLGaussianPyramidKernel.cpp
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--- a/src/core/CL/kernels/CLGaussianPyramidKernel.cpp
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-/*
- * Copyright (c) 2017-2020 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/CL/kernels/CLGaussianPyramidKernel.h"
-
-#include "arm_compute/core/CL/CLKernelLibrary.h"
-#include "arm_compute/core/CL/ICLTensor.h"
-#include "arm_compute/core/Helpers.h"
-#include "arm_compute/core/Utils.h"
-#include "arm_compute/core/Validate.h"
-#include "support/StringSupport.h"
-
-using namespace arm_compute;
-
-CLGaussianPyramidHorKernel::CLGaussianPyramidHorKernel()
- : _l2_load_offset(0)
-{
-}
-
-BorderSize CLGaussianPyramidHorKernel::border_size() const
-{
- return BorderSize{ 0, 2 };
-}
-
-void CLGaussianPyramidHorKernel::configure(const ICLTensor *input, ICLTensor *output)
-{
- configure(CLKernelLibrary::get().get_compile_context(), input, output);
-}
-
-void CLGaussianPyramidHorKernel::configure(const CLCompileContext &compile_context, const ICLTensor *input, ICLTensor *output)
-{
- 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::U16);
- ARM_COMPUTE_ERROR_ON(input->info()->dimension(1) != output->info()->dimension(1));
-
- for(size_t i = 2; i < Coordinates::num_max_dimensions; ++i)
- {
- ARM_COMPUTE_ERROR_ON(input->info()->dimension(i) != output->info()->dimension(i));
- }
-
- _input = input;
- _output = output;
-
- // Create kernel
- const std::string kernel_name = std::string("gaussian1x5_sub_x");
- _kernel = create_kernel(compile_context, kernel_name);
-
- // Configure kernel window
- constexpr unsigned int num_elems_processed_per_iteration = 16;
- constexpr unsigned int num_elems_read_per_iteration = 20;
- constexpr unsigned int num_elems_written_per_iteration = 8;
- const float scale_x = static_cast<float>(output->info()->dimension(0)) / input->info()->dimension(0);
-
- Window win = calculate_max_window_horizontal(*input->info(), Steps(num_elems_processed_per_iteration));
- AccessWindowHorizontal output_access(output->info(), 0, num_elems_written_per_iteration, scale_x);
-
- // Sub sampling selects odd pixels (1, 3, 5, ...) for images with even
- // width and even pixels (0, 2, 4, ...) for images with odd width. (Whether
- // a pixel is even or odd is determined based on the tensor shape not the
- // valid region!)
- // Thus the offset from which the first pixel (L2) for the convolution is
- // loaded depends on the anchor and shape of the valid region.
- // In the case of an even shape (= even image width) we need to load L2
- // from -2 if the anchor is odd and from -1 if the anchor is even. That
- // makes sure that L2 is always loaded from an odd pixel.
- // On the other hand, for an odd shape (= odd image width) we need to load
- // L2 from -1 if the anchor is odd and from -2 if the anchor is even to
- // achieve the opposite effect.
- // The condition can be simplified to checking whether anchor + shape is
- // odd (-2) or even (-1) as only adding an odd and an even number will have
- // an odd result.
- _l2_load_offset = -border_size().left;
-
- if((_input->info()->valid_region().anchor[0] + _input->info()->valid_region().shape[0]) % 2 == 0)
- {
- _l2_load_offset += 1;
- }
-
- update_window_and_padding(win,
- AccessWindowHorizontal(input->info(), _l2_load_offset, num_elems_read_per_iteration),
- output_access);
-
- output->info()->set_valid_region(ValidRegion(Coordinates(), output->info()->tensor_shape()));
-
- ICLKernel::configure_internal(win);
-
- // Set config_id for enabling LWS tuning
- _config_id = kernel_name;
- _config_id += "_";
- _config_id += lower_string(string_from_data_type(input->info()->data_type()));
- _config_id += "_";
- _config_id += support::cpp11::to_string(input->info()->dimension(0));
- _config_id += "_";
- _config_id += support::cpp11::to_string(input->info()->dimension(1));
- _config_id += "_";
- _config_id += support::cpp11::to_string(output->info()->dimension(0));
- _config_id += "_";
- _config_id += support::cpp11::to_string(output->info()->dimension(1));
-}
-
-void CLGaussianPyramidHorKernel::run(const Window &window, cl::CommandQueue &queue)
-{
- ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this);
- ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(ICLKernel::window(), window);
-
- Window win_in(window);
- win_in.shift(Window::DimX, _l2_load_offset);
-
- //The output is half the width of the input:
- Window win_out(window);
- win_out.scale(Window::DimX, 0.5f);
-
- Window slice_in = win_in.first_slice_window_2D();
- Window slice_out = win_out.first_slice_window_2D();
-
- do
- {
- unsigned int idx = 0;
- add_2D_tensor_argument(idx, _input, slice_in);
- add_2D_tensor_argument(idx, _output, slice_out);
- enqueue(queue, *this, slice_out, lws_hint());
- }
- while(win_in.slide_window_slice_2D(slice_in) && win_out.slide_window_slice_2D(slice_out));
-}
-
-CLGaussianPyramidVertKernel::CLGaussianPyramidVertKernel()
- : _t2_load_offset(0)
-{
-}
-
-BorderSize CLGaussianPyramidVertKernel::border_size() const
-{
- return BorderSize{ 2, 0 };
-}
-
-void CLGaussianPyramidVertKernel::configure(const ICLTensor *input, ICLTensor *output)
-{
- configure(CLKernelLibrary::get().get_compile_context(), input, output);
-}
-
-void CLGaussianPyramidVertKernel::configure(const CLCompileContext &compile_context, const ICLTensor *input, ICLTensor *output)
-{
- ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, 1, DataType::U16);
- ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(output, 1, DataType::U8);
- ARM_COMPUTE_ERROR_ON(input->info()->dimension(0) != output->info()->dimension(0));
-
- for(size_t i = 2; i < Coordinates::num_max_dimensions; ++i)
- {
- ARM_COMPUTE_ERROR_ON(input->info()->dimension(i) != output->info()->dimension(i));
- }
-
- _input = input;
- _output = output;
-
- // Create kernel
- const std::string kernel_name = std::string("gaussian5x1_sub_y");
- _kernel = create_kernel(compile_context, "gaussian5x1_sub_y");
-
- // Configure kernel window
- constexpr unsigned int num_elems_processed_per_iteration = 8;
- constexpr unsigned int num_rows_processed_per_iteration = 2;
- constexpr unsigned int num_elems_written_per_iteration = 8;
- constexpr unsigned int num_elems_read_per_iteration = 8;
- constexpr unsigned int num_rows_per_iteration = 5;
-
- const float scale_y = static_cast<float>(output->info()->dimension(1)) / input->info()->dimension(1);
-
- Window win = calculate_max_window(*input->info(), Steps(num_elems_processed_per_iteration, num_rows_processed_per_iteration));
- AccessWindowRectangle output_access(output->info(), 0, 0, num_elems_written_per_iteration, num_rows_per_iteration, 1.f, scale_y);
-
- // Determine whether we need to load even or odd rows. See above for a
- // detailed explanation.
- _t2_load_offset = -border_size().top;
-
- if((_input->info()->valid_region().anchor[1] + _input->info()->valid_region().shape[1]) % 2 == 0)
- {
- _t2_load_offset += 1;
- }
-
- update_window_and_padding(win,
- AccessWindowRectangle(input->info(), 0, _t2_load_offset, num_elems_read_per_iteration, num_rows_per_iteration),
- output_access);
-
- output->info()->set_valid_region(ValidRegion(Coordinates(), output->info()->tensor_shape()));
-
- ICLKernel::configure_internal(win);
-
- // Set config_id for enabling LWS tuning
- _config_id = kernel_name;
- _config_id += "_";
- _config_id += lower_string(string_from_data_type(input->info()->data_type()));
- _config_id += "_";
- _config_id += support::cpp11::to_string(input->info()->dimension(0));
- _config_id += "_";
- _config_id += support::cpp11::to_string(input->info()->dimension(1));
- _config_id += "_";
- _config_id += support::cpp11::to_string(output->info()->dimension(0));
- _config_id += "_";
- _config_id += support::cpp11::to_string(output->info()->dimension(1));
-}
-
-void CLGaussianPyramidVertKernel::run(const Window &window, cl::CommandQueue &queue)
-{
- ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this);
- ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(IKernel::window(), window);
- ARM_COMPUTE_ERROR_ON(window.x().step() != 8);
- ARM_COMPUTE_ERROR_ON(window.y().step() % 2);
-
- Window win_in(window);
- win_in.shift(Window::DimY, _t2_load_offset);
-
- Window win_out(window);
- win_out.scale(Window::DimY, 0.5f);
-
- Window slice_in = win_in.first_slice_window_2D();
- Window slice_out = win_out.first_slice_window_2D();
-
- do
- {
- unsigned int idx = 0;
- add_2D_tensor_argument(idx, _input, slice_in);
- add_2D_tensor_argument(idx, _output, slice_out);
- enqueue(queue, *this, slice_out, lws_hint());
- }
- while(win_in.slide_window_slice_2D(slice_in) && win_out.slide_window_slice_2D(slice_out));
-}