From 6ff3b19ee6120edf015fad8caab2991faa3070af Mon Sep 17 00:00:00 2001 From: Anthony Barbier Date: Mon, 4 Sep 2017 18:44:23 +0100 Subject: COMPMID-344 Updated doxygen Change-Id: I32f7b84daa560e460b77216add529c8fa8b327ae --- src/runtime/NEON/functions/NEScale.cpp | 171 +++++++++++++++++++++++++++++++++ 1 file changed, 171 insertions(+) create mode 100644 src/runtime/NEON/functions/NEScale.cpp (limited to 'src/runtime/NEON/functions/NEScale.cpp') diff --git a/src/runtime/NEON/functions/NEScale.cpp b/src/runtime/NEON/functions/NEScale.cpp new file mode 100644 index 0000000000..b70f626df0 --- /dev/null +++ b/src/runtime/NEON/functions/NEScale.cpp @@ -0,0 +1,171 @@ +/* + * 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/runtime/NEON/functions/NEScale.h" + +#include "arm_compute/core/Coordinates.h" +#include "arm_compute/core/Error.h" +#include "arm_compute/core/Helpers.h" +#include "arm_compute/core/ITensor.h" +#include "arm_compute/core/NEON/kernels/NEScaleKernel.h" +#include "arm_compute/core/PixelValue.h" +#include "arm_compute/core/TensorInfo.h" +#include "arm_compute/core/Window.h" +#include "arm_compute/runtime/TensorAllocator.h" + +#include +#include +#include + +using namespace arm_compute; + +namespace +{ +void precompute_dx_dy_offsets(ITensor *dx, ITensor *dy, ITensor *offsets, float wr, float hr, size_t input_element_size) +{ + ARM_COMPUTE_ERROR_ON(nullptr == offsets); + + Window win; + win.set(Window::DimX, Window::Dimension(0, offsets->info()->dimension(0), 1)); + win.set(Window::DimY, Window::Dimension(0, offsets->info()->dimension(1), 1)); + + if(dx != nullptr && dy != nullptr) + { + // Pre-compute the offset and pixel's distance for BILINEAR interpolation + Iterator offsets_it(offsets, win); + Iterator dx_it(dx, win); + Iterator dy_it(dy, win); + + execute_window_loop(win, [&](const Coordinates & id) + { + const float in_x = (id.x() + 0.5f) * wr - 0.5f; + const float in_y = (id.y() + 0.5f) * hr - 0.5f; + const int in_xi = std::floor(in_x); + const int in_yi = std::floor(in_y); + + *reinterpret_cast(offsets_it.ptr()) = in_xi * input_element_size; + *reinterpret_cast(dx_it.ptr()) = in_x - in_xi; + *reinterpret_cast(dy_it.ptr()) = in_y - in_yi; + }, + offsets_it, dx_it, dy_it); + } + else + { + // Pre-compute the offset for NEAREST interpolation + Iterator offsets_it(offsets, win); + + execute_window_loop(win, [&](const Coordinates & id) + { + const size_t in_xi = (id.x() + 0.5f) * wr; + + *reinterpret_cast(offsets_it.ptr()) = in_xi * input_element_size; + }, + offsets_it); + } +} +} // namespace + +NEScale::NEScale() + : _offsets(), _dx(), _dy() +{ +} + +void NEScale::configure(ITensor *input, ITensor *output, InterpolationPolicy policy, BorderMode border_mode, uint8_t constant_border_value) +{ + ARM_COMPUTE_ERROR_ON(nullptr == input); + ARM_COMPUTE_ERROR_ON(nullptr == output); + + for(size_t i = 2; i < Coordinates::num_max_dimensions; ++i) + { + ARM_COMPUTE_ERROR_ON(input->info()->dimension(i) != output->info()->dimension(i)); + } + + // Get the tensor shape + const TensorShape shape(output->info()->dimension(0), output->info()->dimension(1)); + + // Compute the ratio between source width/height and destination width/height + const auto wr = static_cast(input->info()->dimension(0)) / static_cast(output->info()->dimension(0)); + const auto hr = static_cast(input->info()->dimension(1)) / static_cast(output->info()->dimension(1)); + + // Get the element size of the input image + const size_t input_element_size = input->info()->element_size(); + + // Area interpolation behaves as Nearest Neighbour in case of up-sampling + if(policy == InterpolationPolicy::AREA && wr <= 1.f && hr <= 1.f) + { + policy = InterpolationPolicy::NEAREST_NEIGHBOR; + } + + auto k = arm_compute::cpp14::make_unique(); + + // Check if the border mode is UNDEFINED + const bool border_undefined = border_mode == BorderMode::UNDEFINED; + + switch(policy) + { + case InterpolationPolicy::NEAREST_NEIGHBOR: + { + TensorInfo tensor_info_offsets(shape, Format::S32); + _offsets.allocator()->init(tensor_info_offsets); + + k->configure(input, nullptr, nullptr, &_offsets, output, policy, border_undefined); + + // Allocate once the configure methods have been called + _offsets.allocator()->allocate(); + + // Pre-compute offsets for nearest interpolation + precompute_dx_dy_offsets(nullptr, nullptr, &_offsets, wr, hr, input_element_size); + break; + } + case InterpolationPolicy::BILINEAR: + { + TensorInfo tensor_info_offsets(shape, Format::S32); + TensorInfo tensor_info_dxdy(shape, Format::F32); + + _offsets.allocator()->init(tensor_info_offsets); + _dx.allocator()->init(tensor_info_dxdy); + _dy.allocator()->init(tensor_info_dxdy); + + k->configure(input, &_dx, &_dy, &_offsets, output, policy, border_undefined); + + // Allocate once the configure methods have been called + _offsets.allocator()->allocate(); + _dx.allocator()->allocate(); + _dy.allocator()->allocate(); + + // Pre-compute dx, dy and offsets for bilinear interpolation + precompute_dx_dy_offsets(&_dx, &_dy, &_offsets, wr, hr, input_element_size); + break; + } + case InterpolationPolicy::AREA: + { + k->configure(input, nullptr, nullptr, nullptr, output, policy, border_undefined); + break; + } + default: + ARM_COMPUTE_ERROR("Unsupported interpolation mode"); + } + + _kernel = std::move(k); + _border_handler.configure(input, _kernel->border_size(), border_mode, PixelValue(constant_border_value)); +} -- cgit v1.2.1