From 3f9d4d7c7242f50330dca4ff104a76bc88804903 Mon Sep 17 00:00:00 2001
From: Manuel Bottini <manuel.bottini@arm.com>
Date: Fri, 19 Oct 2018 14:04:42 +0100
Subject: COMPMID-1637 - Add ROIAlign operator to the graph API

Change-Id: I8a9b1e16d90b9d99a6ff2a442347748432723b14
---
 src/graph/nodes/ROIAlignLayerNode.cpp | 95 +++++++++++++++++++++++++++++++++++
 1 file changed, 95 insertions(+)
 create mode 100644 src/graph/nodes/ROIAlignLayerNode.cpp

(limited to 'src/graph/nodes')

diff --git a/src/graph/nodes/ROIAlignLayerNode.cpp b/src/graph/nodes/ROIAlignLayerNode.cpp
new file mode 100644
index 0000000000..5e89ef2263
--- /dev/null
+++ b/src/graph/nodes/ROIAlignLayerNode.cpp
@@ -0,0 +1,95 @@
+/*
+ * 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/graph/nodes/ROIAlignLayerNode.h"
+
+#include "arm_compute/graph/Graph.h"
+#include "arm_compute/graph/INodeVisitor.h"
+
+#include "arm_compute/core/Helpers.h"
+
+namespace arm_compute
+{
+namespace graph
+{
+ROIAlignLayerNode::ROIAlignLayerNode(ROIPoolingLayerInfo &pool_info)
+    : _pool_info(pool_info)
+{
+    _input_edges.resize(2, EmptyEdgeID);
+    _outputs.resize(1, NullTensorID);
+}
+
+const ROIPoolingLayerInfo &ROIAlignLayerNode::pooling_info() const
+{
+    return _pool_info;
+}
+
+bool ROIAlignLayerNode::forward_descriptors()
+{
+    if((input_id(0) != NullTensorID) && (input_id(1) != NullTensorID) && (output_id(0) != NullTensorID))
+    {
+        Tensor *dst = output(0);
+        ARM_COMPUTE_ERROR_ON(dst == nullptr);
+        dst->desc() = configure_output(0);
+        return true;
+    }
+    return false;
+}
+
+TensorDescriptor ROIAlignLayerNode::configure_output(size_t idx) const
+{
+    ARM_COMPUTE_UNUSED(idx);
+    ARM_COMPUTE_ERROR_ON(idx >= _outputs.size());
+
+    const Tensor *src  = input(0);
+    const Tensor *rois = input(1);
+    ARM_COMPUTE_ERROR_ON(src == nullptr);
+    ARM_COMPUTE_ERROR_ON(rois == nullptr);
+
+    TensorDescriptor output_desc = src->desc();
+
+    const size_t idx_n = get_data_layout_dimension_index(output_desc.layout, DataLayoutDimension::BATCHES);
+    const size_t idx_c = get_data_layout_dimension_index(output_desc.layout, DataLayoutDimension::CHANNEL);
+    const size_t idx_h = get_data_layout_dimension_index(output_desc.layout, DataLayoutDimension::HEIGHT);
+    const size_t idx_w = get_data_layout_dimension_index(output_desc.layout, DataLayoutDimension::WIDTH);
+
+    output_desc.shape.set(idx_n, rois->desc().shape[1]);
+    output_desc.shape.set(idx_c, src->desc().shape[idx_c]);
+    output_desc.shape.set(idx_h, _pool_info.pooled_height());
+    output_desc.shape.set(idx_w, _pool_info.pooled_width());
+
+    return output_desc;
+}
+
+NodeType ROIAlignLayerNode::type() const
+{
+    return NodeType::ROIAlignLayer;
+}
+
+void ROIAlignLayerNode::accept(INodeVisitor &v)
+{
+    v.visit(*this);
+}
+} // namespace graph
+} // namespace arm_compute
\ No newline at end of file
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