COMPMID-1327: Add support for BBoxTransform operator in CL

Change-Id: I91865506166951b3bf7f06a0b2d4cde925cfefb6
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/153447
Tested-by: bsgcomp <bsgcomp@arm.com>
Reviewed-by: Pablo Tello <pablo.tello@arm.com>

1 files changed, 127 insertions, 0 deletions

diff --git a/src/core/CL/kernels/CLBoundingBoxTransformKernel.cpp b/src/core/CL/kernels/CLBoundingBoxTransformKernel.cpp
new file mode 100644
index 0000000000..09f3d33f5b
--- /dev/null
+++ b/src/core/CL/kernels/CLBoundingBoxTransformKernel.cpp
@@ -0,0 +1,127 @@
+/*
+ * Copyright (c) 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/CL/kernels/CLBoundingBoxTransformKernel.h"
+
+#include "arm_compute/core/AccessWindowStatic.h"
+#include "arm_compute/core/CL/CLHelpers.h"
+#include "arm_compute/core/CL/CLKernelLibrary.h"
+#include "arm_compute/core/CL/CLValidate.h"
+#include "arm_compute/core/CL/ICLArray.h"
+#include "arm_compute/core/CL/ICLTensor.h"
+#include "arm_compute/core/CL/OpenCL.h"
+#include "arm_compute/core/Helpers.h"
+#include "arm_compute/core/TensorInfo.h"
+#include "arm_compute/core/Utils.h"
+#include "arm_compute/core/Window.h"
+
+namespace arm_compute
+{
+namespace
+{
+Status validate_arguments(const ITensorInfo *boxes, const ITensorInfo *pred_boxes, const ITensorInfo *deltas)
+{
+    ARM_COMPUTE_RETURN_ERROR_ON_NULLPTR(boxes, pred_boxes, deltas);
+    ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_NOT_IN(boxes, DataType::F32, DataType::F16);
+    ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_NOT_IN(deltas, DataType::F32, DataType::F16);
+    ARM_COMPUTE_RETURN_ERROR_ON(deltas->tensor_shape()[1] != boxes->tensor_shape()[1]);
+    ARM_COMPUTE_RETURN_ERROR_ON(deltas->tensor_shape()[0] % 4 != 0);
+    ARM_COMPUTE_RETURN_ERROR_ON(boxes->tensor_shape()[0] != 4);
+    ARM_COMPUTE_RETURN_ERROR_ON(deltas->num_dimensions() > 2);
+    ARM_COMPUTE_RETURN_ERROR_ON(boxes->num_dimensions() > 2);
+
+    if(pred_boxes->total_size() > 0)
+    {
+        ARM_COMPUTE_RETURN_ERROR_ON_MISMATCHING_DIMENSIONS(pred_boxes->tensor_shape(), deltas->tensor_shape());
+        ARM_COMPUTE_RETURN_ERROR_ON_MISMATCHING_DATA_TYPES(pred_boxes, deltas);
+        ARM_COMPUTE_RETURN_ERROR_ON(pred_boxes->num_dimensions() > 2);
+    }
+    return Status{};
+}
+} // namespace
+
+CLBoundingBoxTransformKernel::CLBoundingBoxTransformKernel()
+    : _boxes(nullptr), _pred_boxes(nullptr), _deltas(nullptr)
+{
+}
+
+void CLBoundingBoxTransformKernel::configure(const ICLTensor *boxes, ICLTensor *pred_boxes, const ICLTensor *deltas, const BoundingBoxTransformInfo &info)
+{
+    ARM_COMPUTE_ERROR_ON_NULLPTR(boxes, pred_boxes, deltas);
+    auto_init_if_empty(*pred_boxes->info(), *deltas->info());
+
+    // Set instance variables
+    _boxes      = boxes;
+    _pred_boxes = pred_boxes;
+    _deltas     = deltas;
+
+    // Get image height and widht (rescaled)
+    const int img_h = floor(info.img_height() / info.scale() + 0.5f);
+    const int img_w = floor(info.img_width() / info.scale() + 0.5f);
+
+    // Set build options
+    CLBuildOptions build_opts;
+    build_opts.add_option("-DDATA_TYPE=" + get_cl_type_from_data_type(deltas->info()->data_type()));
+    build_opts.add_option("-DWEIGHT_X=" + float_to_string_with_full_precision(info.weights()[0]));
+    build_opts.add_option("-DWEIGHT_Y=" + float_to_string_with_full_precision(info.weights()[1]));
+    build_opts.add_option("-DWEIGHT_W=" + float_to_string_with_full_precision(info.weights()[2]));
+    build_opts.add_option("-DWEIGHT_H=" + float_to_string_with_full_precision(info.weights()[3]));
+    build_opts.add_option("-DBBOX_XFORM_CLIP=" + float_to_string_with_full_precision(info.bbox_xform_clip()));
+    build_opts.add_option("-DIMG_WIDTH=" + support::cpp11::to_string(img_w));
+    build_opts.add_option("-DIMG_HEIGHT=" + support::cpp11::to_string(img_h));
+    build_opts.add_option("-DBOX_FIELDS=" + support::cpp11::to_string(4));
+    build_opts.add_option_if(info.apply_scale(), "-DSCALE=" + float_to_string_with_full_precision(info.scale()));
+
+    // Create kernel
+    _kernel = static_cast<cl::Kernel>(CLKernelLibrary::get().create_kernel("bounding_box_transform", build_opts.options()));
+
+    // Since the number of columns is a multiple of 4 by definition, we don't need to pad the tensor
+    const unsigned int num_elems_processed_per_iteration = 4;
+    Window             win                               = calculate_max_window(*deltas->info(), Steps(num_elems_processed_per_iteration));
+    ICLKernel::configure_internal(win);
+}
+
+Status CLBoundingBoxTransformKernel::validate(const ITensorInfo *boxes, const ITensorInfo *pred_boxes, const ITensorInfo *deltas, const BoundingBoxTransformInfo &info)
+{
+    ARM_COMPUTE_UNUSED(info);
+    ARM_COMPUTE_RETURN_ON_ERROR(validate_arguments(boxes, pred_boxes, deltas));
+    return Status{};
+}
+
+void CLBoundingBoxTransformKernel::run(const Window &window, cl::CommandQueue &queue)
+{
+    ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this);
+    ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(IKernel::window(), window);
+
+    Window slice = window.first_slice_window_2D();
+
+    // Set arguments
+    unsigned int idx = 0;
+    add_1D_tensor_argument(idx, _boxes, slice);
+    add_2D_tensor_argument(idx, _pred_boxes, slice);
+    add_2D_tensor_argument(idx, _deltas, slice);
+
+    // Note that we don't need to loop over the slices, as we are sure that we are dealing with all 2D tensors
+    enqueue(queue, *this, slice);
+}
+} // namespace arm_compute