COMPMID-2856 Add PrintLayer at graph level

Signed-off-by: Giorgio Arena <giorgio.arena@arm.com>
Change-Id: I8f02bb67adae8cc7d884f2417cc9c408985f0d5a
Reviewed-on: https://review.mlplatform.org/c/2546
Reviewed-by: Manuel Bottini <manuel.bottini@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
diff --git a/arm_compute/graph/nodes/Nodes.h b/arm_compute/graph/nodes/Nodes.h
index 830e8fa..37cc9e4 100644
--- a/arm_compute/graph/nodes/Nodes.h
+++ b/arm_compute/graph/nodes/Nodes.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018-2019 ARM Limited.
+ * Copyright (c) 2018-2020 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -50,6 +50,7 @@
 #include "arm_compute/graph/nodes/PadLayerNode.h"
 #include "arm_compute/graph/nodes/PermuteLayerNode.h"
 #include "arm_compute/graph/nodes/PoolingLayerNode.h"
+#include "arm_compute/graph/nodes/PrintLayerNode.h"
 #include "arm_compute/graph/nodes/PriorBoxLayerNode.h"
 #include "arm_compute/graph/nodes/QuantizationLayerNode.h"
 #include "arm_compute/graph/nodes/ROIAlignLayerNode.h"
diff --git a/arm_compute/graph/nodes/NodesFwd.h b/arm_compute/graph/nodes/NodesFwd.h
index f41523b..0fe86b0 100644
--- a/arm_compute/graph/nodes/NodesFwd.h
+++ b/arm_compute/graph/nodes/NodesFwd.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018-2019 ARM Limited.
+ * Copyright (c) 2018-2020 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -56,6 +56,7 @@
 class PadLayerNode;
 class PermuteLayerNode;
 class PoolingLayerNode;
+class PrintLayerNode;
 class PriorBoxLayerNode;
 class QuantizationLayerNode;
 class ReorgLayerNode;
diff --git a/arm_compute/graph/nodes/PrintLayerNode.h b/arm_compute/graph/nodes/PrintLayerNode.h
new file mode 100644
index 0000000..78b7bf2
--- /dev/null
+++ b/arm_compute/graph/nodes/PrintLayerNode.h
@@ -0,0 +1,79 @@
+/*
+ * 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_PRINT_LAYER_NODE_H
+#define ARM_COMPUTE_GRAPH_PRINT_LAYER_NODE_H
+
+#include "arm_compute/graph/INode.h"
+
+namespace arm_compute
+{
+// Forward declarations
+class ITensor;
+
+namespace graph
+{
+/** Print Layer node */
+class PrintLayerNode final : public INode
+{
+public:
+    /** Constructor
+     *
+     * @param[in] stream      Output stream.
+     * @param[in] format_info (Optional) Format info.
+     * @param[in] transform   (Optional) Input transform function.
+     */
+    PrintLayerNode(std::ostream &stream, const IOFormatInfo &format_info = IOFormatInfo(), const std::function<ITensor *(ITensor *)> transform = nullptr);
+
+    /** Stream metadata accessor
+     *
+     * @return Print Layer stream
+     */
+    std::ostream &stream() const;
+
+    /** Formatting metadata accessor
+     *
+     * @return Print Layer format info
+     */
+    const IOFormatInfo format_info() const;
+
+    /** Transform function metadata accessor
+     *
+     * @return Print Layer transform function
+     */
+    const std::function<ITensor *(ITensor *)> transform() const;
+
+    // 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:
+    std::ostream                             &_stream;
+    const IOFormatInfo                        _format_info;
+    const std::function<ITensor *(ITensor *)> _transform;
+};
+} // namespace graph
+} // namespace arm_compute
+#endif /* ARM_COMPUTE_GRAPH_PRINT_LAYER_NODE_H */