| /* |
| * 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/NEChannelExtractKernel.h" |
| |
| #include "arm_compute/core/Error.h" |
| #include "arm_compute/core/Helpers.h" |
| #include "arm_compute/core/IAccessWindow.h" |
| #include "arm_compute/core/IMultiImage.h" |
| #include "arm_compute/core/ITensor.h" |
| #include "arm_compute/core/MultiImageInfo.h" |
| #include "arm_compute/core/NEON/INEKernel.h" |
| #include "arm_compute/core/TensorInfo.h" |
| #include "arm_compute/core/Types.h" |
| #include "arm_compute/core/Validate.h" |
| #include "arm_compute/core/Window.h" |
| |
| #include <arm_neon.h> |
| |
| using namespace arm_compute; |
| |
| namespace arm_compute |
| { |
| class Coordinates; |
| } // namespace arm_compute |
| |
| NEChannelExtractKernel::NEChannelExtractKernel() |
| : _func(nullptr), _lut_index(0) |
| { |
| } |
| |
| void NEChannelExtractKernel::configure(const ITensor *input, Channel channel, ITensor *output) |
| { |
| ARM_COMPUTE_ERROR_ON_NULLPTR(input, output); |
| ARM_COMPUTE_ERROR_ON(input == output); |
| |
| set_format_if_unknown(*output->info(), Format::U8); |
| |
| ARM_COMPUTE_ERROR_ON_FORMAT_NOT_IN(input, Format::RGB888, Format::RGBA8888, Format::UYVY422, Format::YUYV422); |
| ARM_COMPUTE_ERROR_ON_FORMAT_NOT_IN(output, Format::U8); |
| |
| unsigned int num_elems_processed_per_iteration = 8; |
| |
| // Check format and channel |
| const Format format = input->info()->format(); |
| const unsigned int subsampling = (format == Format::YUYV422 || format == Format::UYVY422) && channel != Channel::Y ? 2 : 1; |
| TensorShape output_shape; |
| |
| switch(format) |
| { |
| case Format::RGB888: |
| case Format::RGBA8888: |
| num_elems_processed_per_iteration = 16; |
| output_shape = input->info()->tensor_shape(); |
| |
| if(format == Format::RGB888) |
| { |
| _func = &NEChannelExtractKernel::extract_1C_from_3C_img; |
| } |
| else if(format == Format::RGBA8888) |
| { |
| _func = &NEChannelExtractKernel::extract_1C_from_4C_img; |
| } |
| |
| switch(channel) |
| { |
| case Channel::R: |
| _lut_index = 0; |
| break; |
| case Channel::G: |
| _lut_index = 1; |
| break; |
| case Channel::B: |
| _lut_index = 2; |
| break; |
| case Channel::A: |
| if(format == Format::RGBA8888) |
| { |
| _lut_index = 3; |
| _func = &NEChannelExtractKernel::extract_1C_from_4C_img; |
| break; |
| } |
| default: |
| ARM_COMPUTE_ERROR("Not supported channel for this format."); |
| break; |
| } |
| break; |
| case Format::YUYV422: |
| case Format::UYVY422: |
| output_shape = input->info()->tensor_shape(); |
| |
| if(channel != Channel::Y) |
| { |
| output_shape.set(0, output_shape[0] / 2); |
| } |
| |
| switch(channel) |
| { |
| case Channel::Y: |
| num_elems_processed_per_iteration = 16; |
| _func = &NEChannelExtractKernel::extract_1C_from_2C_img; |
| _lut_index = (Format::YUYV422 == format) ? 0 : 1; |
| break; |
| case Channel::U: |
| num_elems_processed_per_iteration = 32; |
| _func = &NEChannelExtractKernel::extract_YUYV_uv; |
| _lut_index = (Format::YUYV422 == format) ? 1 : 0; |
| break; |
| case Channel::V: |
| num_elems_processed_per_iteration = 32; |
| _func = &NEChannelExtractKernel::extract_YUYV_uv; |
| _lut_index = (Format::YUYV422 == format) ? 3 : 2; |
| break; |
| default: |
| ARM_COMPUTE_ERROR("Not supported channel for this format."); |
| break; |
| } |
| break; |
| default: |
| ARM_COMPUTE_ERROR("Not supported format."); |
| break; |
| } |
| |
| set_shape_if_empty(*output->info(), output_shape); |
| |
| ARM_COMPUTE_ERROR_ON_MISMATCHING_DIMENSIONS(output->info()->tensor_shape(), output_shape); |
| |
| _input = input; |
| _output = output; |
| |
| 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())); |
| |
| INEKernel::configure(win); |
| } |
| |
| void NEChannelExtractKernel::configure(const IMultiImage *input, Channel channel, IImage *output) |
| { |
| ARM_COMPUTE_ERROR_ON_NULLPTR(input, output); |
| ARM_COMPUTE_ERROR_ON_TENSOR_NOT_2D(output); |
| |
| set_format_if_unknown(*output->info(), Format::U8); |
| |
| switch(input->info()->format()) |
| { |
| case Format::NV12: |
| case Format::NV21: |
| case Format::IYUV: |
| switch(channel) |
| { |
| case Channel::Y: |
| set_shape_if_empty(*output->info(), input->plane(0)->info()->tensor_shape()); |
| ARM_COMPUTE_ERROR_ON_MISMATCHING_SHAPES(input->plane(0), output); |
| break; |
| case Channel::U: |
| case Channel::V: |
| set_shape_if_empty(*output->info(), input->plane(1)->info()->tensor_shape()); |
| ARM_COMPUTE_ERROR_ON_MISMATCHING_SHAPES(input->plane(1), output); |
| break; |
| default: |
| ARM_COMPUTE_ERROR("Unsupported channel for selected format"); |
| } |
| break; |
| case Format::YUV444: |
| set_shape_if_empty(*output->info(), input->plane(0)->info()->tensor_shape()); |
| ARM_COMPUTE_ERROR_ON_MISMATCHING_SHAPES(input->plane(0), output); |
| break; |
| default: |
| ARM_COMPUTE_ERROR("Unsupported 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); |
| |
| unsigned int num_elems_processed_per_iteration = 32; |
| |
| const Format &format = input->info()->format(); |
| |
| switch(format) |
| { |
| case Format::NV12: |
| case Format::NV21: |
| switch(channel) |
| { |
| case Channel::Y: |
| _input = input->plane(0); |
| _func = &NEChannelExtractKernel::copy_plane; |
| break; |
| case Channel::U: |
| _input = input->plane(1); |
| num_elems_processed_per_iteration = 16; |
| _func = &NEChannelExtractKernel::extract_1C_from_2C_img; |
| _lut_index = (Format::NV12 == format) ? 0 : 1; |
| break; |
| case Channel::V: |
| _input = input->plane(1); |
| num_elems_processed_per_iteration = 16; |
| _func = &NEChannelExtractKernel::extract_1C_from_2C_img; |
| _lut_index = (Format::NV12 == format) ? 1 : 0; |
| break; |
| default: |
| ARM_COMPUTE_ERROR("Not supported channel for this format."); |
| break; |
| } |
| break; |
| case Format::IYUV: |
| case Format::YUV444: |
| _func = &NEChannelExtractKernel::copy_plane; |
| switch(channel) |
| { |
| case Channel::Y: |
| _input = input->plane(0); |
| break; |
| case Channel::U: |
| _input = input->plane(1); |
| break; |
| case Channel::V: |
| _input = input->plane(2); |
| break; |
| default: |
| ARM_COMPUTE_ERROR("Not supported channel for this format."); |
| break; |
| } |
| break; |
| default: |
| ARM_COMPUTE_ERROR("Not supported format."); |
| break; |
| } |
| |
| _output = output; |
| Window win = calculate_max_window(*_input->info(), Steps(num_elems_processed_per_iteration)); |
| AccessWindowHorizontal input_access(_input->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->info()->valid_region()); |
| |
| INEKernel::configure(win); |
| } |
| |
| void NEChannelExtractKernel::run(const Window &window) |
| { |
| ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this); |
| ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(INESimpleKernel::window(), window); |
| ARM_COMPUTE_ERROR_ON(_func == nullptr); |
| |
| (this->*_func)(window); |
| } |
| |
| void NEChannelExtractKernel::extract_1C_from_2C_img(const Window &win) |
| { |
| Iterator in(_input, win); |
| Iterator out(_output, win); |
| |
| execute_window_loop(win, [&](const Coordinates & id) |
| { |
| const auto in_ptr = static_cast<uint8_t *>(in.ptr()); |
| const auto out_ptr = static_cast<uint8_t *>(out.ptr()); |
| const auto pixels = vld2q_u8(in_ptr); |
| vst1q_u8(out_ptr, pixels.val[_lut_index]); |
| }, |
| in, out); |
| } |
| |
| void NEChannelExtractKernel::extract_1C_from_3C_img(const Window &win) |
| { |
| Iterator in(_input, win); |
| Iterator out(_output, win); |
| |
| execute_window_loop(win, [&](const Coordinates & id) |
| { |
| const auto in_ptr = static_cast<uint8_t *>(in.ptr()); |
| const auto out_ptr = static_cast<uint8_t *>(out.ptr()); |
| const auto pixels = vld3q_u8(in_ptr); |
| vst1q_u8(out_ptr, pixels.val[_lut_index]); |
| }, |
| in, out); |
| } |
| |
| void NEChannelExtractKernel::extract_1C_from_4C_img(const Window &win) |
| { |
| Iterator in(_input, win); |
| Iterator out(_output, win); |
| |
| execute_window_loop(win, [&](const Coordinates & id) |
| { |
| const auto in_ptr = static_cast<uint8_t *>(in.ptr()); |
| const auto out_ptr = static_cast<uint8_t *>(out.ptr()); |
| const auto pixels = vld4q_u8(in_ptr); |
| vst1q_u8(out_ptr, pixels.val[_lut_index]); |
| }, |
| in, out); |
| } |
| |
| void NEChannelExtractKernel::extract_YUYV_uv(const Window &win) |
| { |
| ARM_COMPUTE_ERROR_ON(win.x().step() % 2); |
| |
| Window win_out(win); |
| win_out.set_dimension_step(Window::DimX, win.x().step() / 2); |
| |
| Iterator in(_input, win); |
| Iterator out(_output, win_out); |
| |
| execute_window_loop(win, [&](const Coordinates & id) |
| { |
| const auto in_ptr = static_cast<uint8_t *>(in.ptr()); |
| const auto out_ptr = static_cast<uint8_t *>(out.ptr()); |
| const auto pixels = vld4q_u8(in_ptr); |
| vst1q_u8(out_ptr, pixels.val[_lut_index]); |
| }, |
| in, out); |
| } |
| |
| void NEChannelExtractKernel::copy_plane(const Window &win) |
| { |
| Iterator in(_input, win); |
| Iterator out(_output, win); |
| |
| execute_window_loop(win, [&](const Coordinates &) |
| { |
| const auto in_ptr = static_cast<uint8_t *>(in.ptr()); |
| const auto out_ptr = static_cast<uint8_t *>(out.ptr()); |
| vst4_u8(out_ptr, vld4_u8(in_ptr)); |
| }, |
| in, out); |
| } |