From d8734b55d89f05901ba9a75349761a9c955d9243 Mon Sep 17 00:00:00 2001
From: Georgios Pinitas <georgios.pinitas@arm.com>
Date: Fri, 22 Dec 2017 15:27:52 +0000
Subject: COMPMID-793 : Add graph intermediate representation

Change-Id: Ic1685de4e19e0ac79669ef2da64e1dc96c7ea0bf
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/115248
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
---
 src/graph2/nodes/PoolingLayerNode.cpp | 103 ++++++++++++++++++++++++++++++++++
 1 file changed, 103 insertions(+)
 create mode 100644 src/graph2/nodes/PoolingLayerNode.cpp

(limited to 'src/graph2/nodes/PoolingLayerNode.cpp')

diff --git a/src/graph2/nodes/PoolingLayerNode.cpp b/src/graph2/nodes/PoolingLayerNode.cpp
new file mode 100644
index 0000000000..2c2cf5387a
--- /dev/null
+++ b/src/graph2/nodes/PoolingLayerNode.cpp
@@ -0,0 +1,103 @@
+/*
+ * 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/graph2/nodes/PoolingLayerNode.h"
+
+#include "arm_compute/core/Utils.h"
+#include "arm_compute/graph2/Graph.h"
+#include "arm_compute/graph2/INodeVisitor.h"
+
+namespace arm_compute
+{
+namespace graph2
+{
+PoolingLayerNode::PoolingLayerNode(PoolingLayerInfo pool_info)
+    : _info(std::move(pool_info))
+{
+    _input_edges.resize(1, EmptyEdgeID);
+    _outputs.resize(1, NullTensorID);
+}
+
+PoolingLayerInfo PoolingLayerNode::pooling_info() const
+{
+    return _info;
+}
+
+TensorShape PoolingLayerNode::compute_output_shape(TensorShape input_shape, PoolingLayerInfo info)
+{
+    const int pool_size_x = info.is_global_pooling() ? input_shape.x() : info.pool_size().width;
+    const int pool_size_y = info.is_global_pooling() ? input_shape.y() : info.pool_size().height;
+
+    unsigned int pooled_width  = 0;
+    unsigned int pooled_height = 0;
+    std::tie(pooled_width, pooled_height) = scaled_dimensions(input_shape.x(), input_shape.y(), pool_size_x, pool_size_y, info.pad_stride_info());
+
+    TensorShape output_shape{ input_shape };
+    output_shape.set(0, pooled_width);
+    output_shape.set(1, pooled_height);
+
+    return output_shape;
+}
+
+bool PoolingLayerNode::forward_descriptors()
+{
+    if((input_id(0) != 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 PoolingLayerNode::configure_output(size_t idx) const
+{
+    ARM_COMPUTE_UNUSED(idx);
+    ARM_COMPUTE_ERROR_ON(idx >= _outputs.size());
+
+    const Tensor *src = input(0);
+    ARM_COMPUTE_ERROR_ON(src == nullptr);
+
+    TensorDescriptor output_info  = src->desc();
+    TensorShape      output_shape = compute_output_shape(src->desc().shape, _info);
+    output_info.shape             = output_shape;
+    return output_info;
+}
+
+Status PoolingLayerNode::validate()
+{
+    return Status{};
+}
+
+NodeType PoolingLayerNode::type() const
+{
+    return NodeType::PoolingLayer;
+}
+
+void PoolingLayerNode::accept(INodeVisitor &v)
+{
+    v.visit(*this);
+}
+} // namespace graph2
+} // namespace arm_compute
\ No newline at end of file
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