From d9eb27597eabe5b7c17520f4f9b3f8a282d72573 Mon Sep 17 00:00:00 2001
From: Georgios Pinitas <georgios.pinitas@arm.com>
Date: Tue, 3 Apr 2018 13:44:29 +0100
Subject: COMPMID-797: Switch to new graph.

- Cleaned up build system

Change-Id: If2faa27ee5b31fa8b972836960ab3ef671059c8d
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/126435
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Pablo Tello <pablo.tello@arm.com>
---
 src/graph/nodes/SplitLayerNode.cpp | 117 +++++++++++++++++++++++++++++++++++++
 1 file changed, 117 insertions(+)
 create mode 100644 src/graph/nodes/SplitLayerNode.cpp

(limited to 'src/graph/nodes/SplitLayerNode.cpp')

diff --git a/src/graph/nodes/SplitLayerNode.cpp b/src/graph/nodes/SplitLayerNode.cpp
new file mode 100644
index 0000000000..c8fb43c2a1
--- /dev/null
+++ b/src/graph/nodes/SplitLayerNode.cpp
@@ -0,0 +1,117 @@
+/*
+ * 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/SplitLayerNode.h"
+
+#include "arm_compute/core/Utils.h"
+#include "arm_compute/graph/Graph.h"
+#include "arm_compute/graph/INodeVisitor.h"
+
+namespace arm_compute
+{
+namespace graph
+{
+SplitLayerNode::SplitLayerNode(unsigned int num_splits, unsigned int axis)
+    : _num_splits(num_splits), _axis(axis)
+{
+    _input_edges.resize(1, EmptyEdgeID);
+    _outputs.resize(num_splits, NullTensorID);
+}
+
+unsigned int SplitLayerNode::num_splits() const
+{
+    return _num_splits;
+}
+
+unsigned int SplitLayerNode::axis() const
+{
+    return _axis;
+}
+
+std::pair<TensorShape, Coordinates> SplitLayerNode::compute_output_shape(TensorShape input_shape, unsigned int num_splits, unsigned int axis, unsigned int idx)
+{
+    ARM_COMPUTE_ERROR_ON(axis >= input_shape.num_dimensions());
+    ARM_COMPUTE_ERROR_ON_MSG(input_shape[axis] % num_splits, "Split should be exact");
+
+    const unsigned int split_size = input_shape[axis] / num_splits;
+
+    TensorShape output_shape = input_shape;
+    output_shape.set(axis, split_size);
+
+    Coordinates coords;
+    coords.set(axis, idx * split_size);
+
+    return std::make_pair(output_shape, coords);
+}
+
+bool SplitLayerNode::forward_descriptors()
+{
+    if(input_id(0) != NullTensorID)
+    {
+        for(unsigned int i = 0; i < _outputs.size(); ++i)
+        {
+            if(output_id(i) != NullTensorID)
+            {
+                Tensor *dst_i = output(i);
+                ARM_COMPUTE_ERROR_ON(dst_i == nullptr);
+                dst_i->desc() = configure_output(i);
+            }
+        }
+        return true;
+    }
+    return false;
+}
+
+TensorDescriptor SplitLayerNode::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);
+
+    TensorShape output_shape;
+
+    TensorDescriptor output_info = src->desc();
+    std::tie(output_shape, std::ignore) = compute_output_shape(src->desc().shape, _num_splits, _axis, idx);
+    output_info.shape = output_shape;
+
+    return output_info;
+}
+
+Status SplitLayerNode::validate()
+{
+    return Status{};
+}
+
+NodeType SplitLayerNode::type() const
+{
+    return NodeType::SplitLayer;
+}
+
+void SplitLayerNode::accept(INodeVisitor &v)
+{
+    v.visit(*this);
+}
+} // namespace graph
+} // namespace arm_compute
\ No newline at end of file
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