| /* |
| * 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 "src/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 "src/core/helpers/WindowHelpers.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)); |
| } |