COMPMID-1843: Implement NECrop

Change-Id: I27e8b1a00c2315c72106e8e596f84ad48fb770e3
Signed-off-by: George Wort <george.wort@arm.com>
Reviewed-on: https://review.mlplatform.org/c/648
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Pablo Marquez <pablo.tello@arm.com>

1 files changed, 113 insertions, 0 deletions

diff --git a/src/runtime/NEON/functions/NECropResize.cpp b/src/runtime/NEON/functions/NECropResize.cpp
new file mode 100644
index 0000000000..4360b50dfb
--- /dev/null
+++ b/src/runtime/NEON/functions/NECropResize.cpp
@@ -0,0 +1,113 @@
+/*
+ * Copyright (c) 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 "arm_compute/runtime/NEON/NEScheduler.h"
+
+#include "arm_compute/runtime/NEON/functions/NECropResize.h"
+
+#include <cstddef>
+
+namespace arm_compute
+{
+NECropResize::NECropResize()
+    : _output(nullptr), _num_boxes(0), _method(), _extrapolation_value(0), _crop(), _scale()
+{
+}
+
+Status NECropResize::validate(const ITensorInfo *input, const ITensorInfo *boxes, const ITensorInfo *box_ind, const ITensorInfo *output,
+                              Coordinates2D crop_size, InterpolationPolicy method, float extrapolation_value)
+{
+    ARM_COMPUTE_RETURN_ERROR_ON(crop_size.x <= 0 || crop_size.y <= 0);
+    ARM_COMPUTE_RETURN_ERROR_ON(method == InterpolationPolicy::AREA);
+    TensorInfo temp_info;
+    ARM_COMPUTE_RETURN_ON_ERROR(NECropKernel::validate(input->clone().get(), boxes->clone().get(), box_ind->clone().get(), &temp_info, boxes->tensor_shape()[1] - 1, extrapolation_value));
+    if(output->total_size() > 0)
+    {
+        ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_NOT_IN(output, DataType::F32);
+        ARM_COMPUTE_RETURN_ERROR_ON_MISMATCHING_DATA_LAYOUT(input, output);
+        TensorShape out_shape(input->tensor_shape()[0], crop_size.x, crop_size.y, boxes->tensor_shape()[1]);
+        ARM_COMPUTE_RETURN_ERROR_ON_MISMATCHING_DIMENSIONS(output->tensor_shape(), out_shape);
+    }
+    return Status{};
+}
+
+void NECropResize::configure(const ITensor *input, const ITensor *boxes, const ITensor *box_ind, ITensor *output, Coordinates2D crop_size,
+                             InterpolationPolicy method, float extrapolation_value)
+{
+    ARM_COMPUTE_ERROR_ON_NULLPTR(input, output);
+    ARM_COMPUTE_ERROR_THROW_ON(NECropResize::validate(input->info(), boxes->info(), box_ind->info(), output->info(), crop_size, method, extrapolation_value));
+
+    _num_boxes = boxes->info()->tensor_shape()[1];
+    TensorShape out_shape(input->info()->tensor_shape()[0], crop_size.x, crop_size.y);
+
+    _output              = output;
+    _method              = method;
+    _extrapolation_value = extrapolation_value;
+
+    // For each crop box:
+    // - A crop kernel is used to extract the initial cropped image as specified by boxes[i] from the 3D image input[box_ind[i]].
+    // - A tensor is required to hold this initial cropped image.
+    // - A scale function is used to resize the cropped image to the size specified by crop_size.
+    // - A tensor is required to hold the final scaled image before it is copied into the 4D output
+    //   that will hold all final cropped and scaled 3D images.
+    _crop           = arm_compute::support::cpp14::make_unique<NECropKernel[]>(_num_boxes);
+    _crop_results   = arm_compute::support::cpp14::make_unique<Tensor[]>(_num_boxes);
+    _scale          = arm_compute::support::cpp14::make_unique<NEScale[]>(_num_boxes);
+    _scaled_results = arm_compute::support::cpp14::make_unique<Tensor[]>(_num_boxes);
+
+    for(unsigned int i = 0; i < _num_boxes; ++i)
+    {
+        TensorInfo crop_result_info(1, DataType::F32);
+        crop_result_info.set_data_layout(DataLayout::NHWC);
+        _crop_results[i].allocator()->init(crop_result_info);
+
+        TensorInfo scaled_result_info(out_shape, 1, DataType::F32);
+        scaled_result_info.set_data_layout(DataLayout::NHWC);
+        _scaled_results[i].allocator()->init(scaled_result_info);
+
+        _crop[i].configure(input, boxes, box_ind, &_crop_results[i], i, _extrapolation_value);
+    }
+}
+
+void NECropResize::run()
+{
+    ARM_COMPUTE_ERROR_ON_MSG(_output == nullptr, "Unconfigured function");
+
+    for(unsigned int i = 0; i < _num_boxes; ++i)
+    {
+        // Size of the crop box in _boxes and thus the shape of _crop_results[i]
+        // may not be known until run-time and so the kernels cannot be configured until then.
+        _crop[i].configure_output_shape();
+        _crop_results[i].allocator()->allocate();
+        NEScheduler::get().schedule(&_crop[i], Window::DimZ);
+
+        // Scale the cropped image.
+        _scale[i].configure(&_crop_results[i], &_scaled_results[i], _method, BorderMode::CONSTANT, PixelValue(_extrapolation_value), SamplingPolicy::TOP_LEFT, false);
+        _scaled_results[i].allocator()->allocate();
+        _scale[i].run();
+
+        // Copy scaled image into output.
+        std::copy_n(_scaled_results[i].buffer(), _scaled_results[i].info()->total_size(), _output->ptr_to_element(Coordinates(0, 0, 0, i)));
+    }
+}
+} // namespace arm_compute
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