| /* |
| * Copyright (c) 2016-2018 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/CLChannelExtractKernel.h" |
| |
| #include "arm_compute/core/CL/CLKernelLibrary.h" |
| #include "arm_compute/core/CL/ICLMultiImage.h" |
| #include "arm_compute/core/CL/ICLTensor.h" |
| #include "arm_compute/core/CL/OpenCL.h" |
| #include "arm_compute/core/Coordinates.h" |
| #include "arm_compute/core/Error.h" |
| #include "arm_compute/core/Helpers.h" |
| #include "arm_compute/core/MultiImageInfo.h" |
| #include "arm_compute/core/TensorInfo.h" |
| #include "arm_compute/core/Types.h" |
| #include "arm_compute/core/Utils.h" |
| #include "arm_compute/core/Validate.h" |
| #include "arm_compute/core/Window.h" |
| |
| #include <set> |
| #include <string> |
| |
| using namespace arm_compute; |
| |
| CLChannelExtractKernel::CLChannelExtractKernel() |
| : _input(nullptr), _output(nullptr), _num_elems_processed_per_iteration(8), _subsampling(1) |
| { |
| } |
| |
| void CLChannelExtractKernel::configure(const ICLTensor *input, Channel channel, ICLTensor *output) |
| { |
| ARM_COMPUTE_ERROR_ON_NULLPTR(input, output); |
| ARM_COMPUTE_ERROR_ON(input == output); |
| |
| set_format_if_unknown(*output->info(), Format::U8); |
| |
| // Check if input tensor has a valid format |
| ARM_COMPUTE_ERROR_ON_FORMAT_NOT_IN(input, Format::RGB888, Format::RGBA8888, Format::YUYV422, Format::UYVY422); |
| ARM_COMPUTE_ERROR_ON_FORMAT_NOT_IN(output, Format::U8); |
| ARM_COMPUTE_ERROR_ON_TENSOR_NOT_2D(output); |
| |
| // Check if channel is valid for given format |
| const Format format = input->info()->format(); |
| ARM_COMPUTE_ERROR_ON_CHANNEL_NOT_IN_KNOWN_FORMAT(format, channel); |
| |
| // Half the processed elements for U,V channels due to sub-sampling of 2 |
| _subsampling = 1; |
| |
| if(format == Format::YUYV422 || format == Format::UYVY422) |
| { |
| // Check if the width of the tensor shape is even for formats with subsampled channels (UYVY422 and YUYV422) |
| ARM_COMPUTE_ERROR_ON_TENSORS_NOT_EVEN(format, input); |
| |
| if(channel != Channel::Y) |
| { |
| _subsampling = 2; |
| } |
| } |
| |
| // Calculate output tensor shape using subsampling |
| TensorShape output_shape = calculate_subsampled_shape(input->info()->tensor_shape(), format, channel); |
| set_shape_if_empty(*output->info(), output_shape); |
| |
| ARM_COMPUTE_ERROR_ON_MISMATCHING_DIMENSIONS(output->info()->tensor_shape(), output_shape); |
| |
| _input = input; |
| _output = output; |
| |
| // Create kernel |
| std::string kernel_name = "channel_extract_" + string_from_format(format); |
| std::set<std::string> build_opts = { ("-DCHANNEL_" + string_from_channel(channel)) }; |
| _kernel = static_cast<cl::Kernel>(CLKernelLibrary::get().create_kernel(kernel_name, build_opts)); |
| |
| // Configure window |
| Window win = calculate_max_window(*input->info(), Steps(_num_elems_processed_per_iteration)); |
| AccessWindowHorizontal input_access(input->info(), 0, _num_elems_processed_per_iteration); |
| AccessWindowRectangle output_access(output->info(), 0, 0, _num_elems_processed_per_iteration, 1, 1.f / _subsampling, 1.f / _subsampling); |
| |
| update_window_and_padding(win, input_access, output_access); |
| |
| ValidRegion input_valid_region = input->info()->valid_region(); |
| output_access.set_valid_region(win, ValidRegion(input_valid_region.anchor, output->info()->tensor_shape())); |
| |
| ICLKernel::configure(win); |
| } |
| |
| void CLChannelExtractKernel::configure(const ICLMultiImage *input, Channel channel, ICLImage *output) |
| { |
| ARM_COMPUTE_ERROR_ON_NULLPTR(input, output); |
| ARM_COMPUTE_ERROR_ON_TENSOR_NOT_2D(output); |
| |
| set_format_if_unknown(*output->info(), Format::U8); |
| |
| // Check if channel is valid for given format |
| const Format format = input->info()->format(); |
| ARM_COMPUTE_ERROR_ON_CHANNEL_NOT_IN_KNOWN_FORMAT(format, channel); |
| |
| // Get input plane from the given channel |
| const ICLImage *input_plane = input->cl_plane(plane_idx_from_channel(format, channel)); |
| ARM_COMPUTE_ERROR_ON_NULLPTR(input_plane); |
| |
| if(Channel::Y == channel && format != Format::YUV444) |
| { |
| // Check if the width of the tensor shape is even for formats with subsampled channels (UYVY422 and YUYV422) |
| ARM_COMPUTE_ERROR_ON_TENSORS_NOT_EVEN(format, input_plane); |
| } |
| |
| // Calculate 2x2 subsampled tensor shape |
| TensorShape output_shape = calculate_subsampled_shape(input->cl_plane(0)->info()->tensor_shape(), format, channel); |
| set_shape_if_empty(*output->info(), output_shape); |
| |
| ARM_COMPUTE_ERROR_ON_MISMATCHING_DIMENSIONS(output_shape, output->info()->tensor_shape()); |
| |
| // Check if input tensor has a valid format |
| ARM_COMPUTE_ERROR_ON_FORMAT_NOT_IN(input, Format::NV12, Format::NV21, Format::IYUV, Format::YUV444); |
| ARM_COMPUTE_ERROR_ON_FORMAT_NOT_IN(output, Format::U8); |
| |
| _output = output; |
| _input = input_plane; |
| _subsampling = 1; |
| |
| // Create kernel |
| std::string kernel_name; |
| std::set<std::string> build_opts; |
| if(Channel::Y == channel || Format::IYUV == format || Format::YUV444 == format) |
| { |
| kernel_name = "copy_plane"; |
| } |
| else |
| { |
| kernel_name = "channel_extract_" + string_from_format(format); |
| build_opts.insert(("-DCHANNEL_" + string_from_channel(channel))); |
| } |
| _kernel = static_cast<cl::Kernel>(CLKernelLibrary::get().create_kernel(kernel_name, build_opts)); |
| |
| // Configure window |
| Window win = calculate_max_window(*input_plane->info(), Steps(_num_elems_processed_per_iteration)); |
| AccessWindowHorizontal input_access(input_plane->info(), 0, _num_elems_processed_per_iteration); |
| AccessWindowHorizontal output_access(output->info(), 0, _num_elems_processed_per_iteration); |
| |
| update_window_and_padding(win, input_access, output_access); |
| |
| output_access.set_valid_region(win, input_plane->info()->valid_region()); |
| |
| ICLKernel::configure(win); |
| } |
| |
| void CLChannelExtractKernel::run(const Window &window, cl::CommandQueue &queue) |
| { |
| ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this); |
| ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(ICLKernel::window(), window); |
| |
| Window slice = window.first_slice_window_2D(); |
| |
| do |
| { |
| Window win_sub(slice); |
| win_sub.set(Window::DimX, Window::Dimension(win_sub.x().start() / _subsampling, win_sub.x().end() / _subsampling, win_sub.x().step() / _subsampling)); |
| win_sub.set(Window::DimY, Window::Dimension(win_sub.y().start() / _subsampling, win_sub.y().end() / _subsampling, 1)); |
| |
| unsigned int idx = 0; |
| add_2D_tensor_argument(idx, _input, slice); |
| add_2D_tensor_argument(idx, _output, win_sub); |
| enqueue(queue, *this, slice); |
| } |
| while(window.slide_window_slice_2D(slice)); |
| } |