COMPMID-540 Replace NEDeconvolutionLayerUpsampleKernel with NEScaleKernel

Change-Id: Ic29557cca24447ef40fa2cfca84f208b4d43f8de
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/122180
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele DiGiorgio <michele.digiorgio@arm.com>
Reviewed-by: Pablo Tello <pablo.tello@arm.com>

1 files changed, 101 insertions, 0 deletions

diff --git a/src/core/CPP/kernels/CPPUpsampleKernel.cpp b/src/core/CPP/kernels/CPPUpsampleKernel.cpp
new file mode 100644
index 0000000000..d77d9c118f
--- /dev/null
+++ b/src/core/CPP/kernels/CPPUpsampleKernel.cpp
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2017-2018 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/CPP/kernels/CPPUpsampleKernel.h"
+
+#include "arm_compute/core/Error.h"
+#include "arm_compute/core/Helpers.h"
+#include "arm_compute/core/ITensor.h"
+#include "arm_compute/core/TensorInfo.h"
+#include "arm_compute/core/Types.h"
+#include "arm_compute/core/Validate.h"
+#include "arm_compute/core/utils/misc/ShapeCalculator.h"
+
+#include <cstddef>
+#include <cstdint>
+
+using namespace arm_compute;
+
+CPPUpsampleKernel::CPPUpsampleKernel()
+    : _input(nullptr), _output(nullptr), _info(), _inner_border()
+{
+}
+
+bool CPPUpsampleKernel::is_parallelisable() const
+{
+    return false;
+}
+
+void CPPUpsampleKernel::configure(const ITensor *input, ITensor *output, const PadStrideInfo &info, unsigned int inner_border_right, unsigned int inner_border_top)
+{
+    ARM_COMPUTE_ERROR_ON_NULLPTR(input, output);
+
+    _input        = input;
+    _output       = output;
+    _info         = info;
+    _inner_border = std::make_pair(inner_border_right, inner_border_top);
+
+    // Configure kernel window
+    Window win = calculate_max_window(*input->info(), Steps());
+
+    // The CPPUpsampleKernel doesn't need padding so update_window_and_padding() can be skipped
+    Coordinates coord;
+    coord.set_num_dimensions(output->info()->num_dimensions());
+    output->info()->set_valid_region(ValidRegion(coord, output->info()->tensor_shape()));
+
+    ICPPKernel::configure(win);
+}
+
+void CPPUpsampleKernel::run(const Window &window, const ThreadInfo &info)
+{
+    ARM_COMPUTE_UNUSED(info);
+    ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this);
+    ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(ICPPKernel::window(), window);
+
+    // Initialize _scaled_output buffer
+    const int width_scaled  = _output->info()->dimension(0);
+    const int height_scaled = _output->info()->dimension(1);
+    const int stride_x      = _info.stride().first;
+    const int stride_y      = _info.stride().second;
+    const int start_x       = _info.pad().first;
+    const int start_y       = _inner_border.second + _info.pad().second;
+    const int end_y         = height_scaled - _info.pad().second;
+    const int end_x         = width_scaled - _inner_border.first - _info.pad().first;
+
+    std::fill_n(_output->buffer(), _output->info()->total_size(), 0);
+
+    // Create window
+    Window window_out(window);
+    window_out.set(Window::DimX, Window::Dimension(start_x, end_x, stride_x));
+    window_out.set(Window::DimY, Window::Dimension(start_y, end_y, stride_y));
+
+    // Create iterators
+    Iterator in(_input, window);
+    Iterator out(_output, window_out);
+
+    execute_window_loop(window, [&](const Coordinates & id)
+    {
+        *(reinterpret_cast<float *>(out.ptr())) = *(reinterpret_cast<const float *>(in.ptr()));
+    },
+    in, out);
+}