| /* |
| * Copyright (c) 2017-2019 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 "ChannelExtract.h" |
| |
| #include "arm_compute/core/Types.h" |
| #include "tests/validation/Helpers.h" |
| |
| namespace arm_compute |
| { |
| namespace test |
| { |
| namespace validation |
| { |
| namespace reference |
| { |
| template <typename T> |
| SimpleTensor<uint8_t> channel_extract(const TensorShape &shape, const std::vector<SimpleTensor<T>> &tensor_planes, Format format, Channel channel) |
| { |
| // Find plane and channel index |
| const unsigned int plane_idx = plane_idx_from_channel(format, channel); |
| const unsigned int channel_idx = channel_idx_from_format(format, channel); |
| |
| // Create dst and get src tensor |
| SimpleTensor<T> src = tensor_planes[plane_idx]; |
| SimpleTensor<T> dst{ calculate_subsampled_shape(shape, format, channel), Format::U8 }; |
| |
| // Single planar formats with subsampling require a double horizontal step |
| const int step_x = ((Format::YUYV422 == format || Format::UYVY422 == format) && Channel::Y != channel) ? 2 : 1; |
| const int width = dst.shape().x(); |
| const int height = dst.shape().y(); |
| |
| // Loop over each pixel and extract channel |
| for(int y = 0; y < height; ++y) |
| { |
| for(int x = 0; x < width; ++x) |
| { |
| const Coordinates src_coord{ x * step_x, y }; |
| const Coordinates dst_coord{ x, y }; |
| |
| const auto *src_pixel = reinterpret_cast<const T *>(src(src_coord)); |
| auto *dst_pixel = reinterpret_cast<T *>(dst(dst_coord)); |
| |
| dst_pixel[0] = src_pixel[channel_idx]; // NOLINT |
| } |
| } |
| |
| return dst; |
| } |
| |
| template SimpleTensor<uint8_t> channel_extract(const TensorShape &shape, const std::vector<SimpleTensor<uint8_t>> &tensor_planes, Format format, Channel channel); |
| } // namespace reference |
| } // namespace validation |
| } // namespace test |
| } // namespace arm_compute |