Add DepthToSpace layer node to Graph API

Change-Id: I5db780fb9c94160130e9986bbfc739124bfa8041
Signed-off-by: thecha01 <theo.charalambous@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/3914
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>

3 files changed, 68 insertions, 0 deletions

diff --git a/arm_compute/graph/nodes/DepthToSpaceLayerNode.h b/arm_compute/graph/nodes/DepthToSpaceLayerNode.h
new file mode 100644
index 0000000000..25e30e2c67
--- /dev/null
+++ b/arm_compute/graph/nodes/DepthToSpaceLayerNode.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2020 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.
+ */
+#ifndef ARM_COMPUTE_GRAPH_DEPTH_TO_SPACE_LAYER_NODE_H
+#define ARM_COMPUTE_GRAPH_DEPTH_TO_SPACE_LAYER_NODE_H
+
+#include "arm_compute/graph/INode.h"
+
+namespace arm_compute
+{
+namespace graph
+{
+/** DepthToSpace Layer node */
+class DepthToSpaceLayerNode final : public INode
+{
+public:
+    /** Default Constructor */
+    DepthToSpaceLayerNode(int block_shape);
+    /** Block shape policy accessor
+     *
+     * @return Block shape
+     */
+    int block_shape() const;
+    /** Computes depth to space output descriptor
+     *
+     * @warning block_shape must be greater than or equal to 2
+     *
+     * @param[in] input_descriptor Input descriptor
+     * @param[in] block_shape      Number of output neurons
+     *
+     * @return Output descriptor
+     */
+    static TensorDescriptor compute_output_descriptor(const TensorDescriptor &input_descriptor, int block_shape);
+
+    // Inherited overridden methods:
+    NodeType         type() const override;
+    bool             forward_descriptors() override;
+    TensorDescriptor configure_output(size_t idx) const override;
+    void accept(INodeVisitor &v) override;
+
+private:
+    int _block_shape;
+};
+} // namespace graph
+} // namespace arm_compute
+#endif /* ARM_COMPUTE_GRAPH_DEPTH_TO_SPACE_LAYER_NODE_H */
diff --git a/arm_compute/graph/nodes/Nodes.h b/arm_compute/graph/nodes/Nodes.h
index bf4ab87cda..6df7ffab69 100644
--- a/arm_compute/graph/nodes/Nodes.h
+++ b/arm_compute/graph/nodes/Nodes.h
@@ -32,6 +32,7 @@
 #include "arm_compute/graph/nodes/ConstNode.h"
 #include "arm_compute/graph/nodes/ConvolutionLayerNode.h"
 #include "arm_compute/graph/nodes/DeconvolutionLayerNode.h"
+#include "arm_compute/graph/nodes/DepthToSpaceLayerNode.h"
 #include "arm_compute/graph/nodes/DepthwiseConvolutionLayerNode.h"
 #include "arm_compute/graph/nodes/DequantizationLayerNode.h"
 #include "arm_compute/graph/nodes/DetectionOutputLayerNode.h"
diff --git a/arm_compute/graph/nodes/NodesFwd.h b/arm_compute/graph/nodes/NodesFwd.h
index 9541f4babe..63632848af 100644
--- a/arm_compute/graph/nodes/NodesFwd.h
+++ b/arm_compute/graph/nodes/NodesFwd.h
@@ -38,6 +38,7 @@ class ConcatenateLayerNode;
 class ConstNode;
 class ConvolutionLayerNode;
 class DeconvolutionLayerNode;
+class DepthToSpaceLayerNode;
 class DepthwiseConvolutionLayerNode;
 class DequantizationLayerNode;
 class DetectionOutputLayerNode;