COMPMID-1999: Add support for GenerateProposals operator in CL

Change-Id: Ie08a6874347085f96b00f25bdb605eee7d683c25
Signed-off-by: giuros01 <giuseppe.rossini@arm.com>
Reviewed-on: https://review.mlplatform.org/719
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Reviewed-by: Michalis Spyrou <michalis.spyrou@arm.com>

9 files changed, 193 insertions, 0 deletions

diff --git a/arm_compute/graph/GraphBuilder.h b/arm_compute/graph/GraphBuilder.h
index cf213e4e51..1296f56482 100644
--- a/arm_compute/graph/GraphBuilder.h
+++ b/arm_compute/graph/GraphBuilder.h
@@ -253,6 +253,19 @@ public:
                                             const FullyConnectedLayerInfo fc_info            = FullyConnectedLayerInfo(),
                                             const QuantizationInfo        weights_quant_info = QuantizationInfo(),
                                             const QuantizationInfo        out_quant_info     = QuantizationInfo());
+    /** Adds a generate proposals layer node to the graph
+     *
+     * @param[in] g       Graph to add the layer to
+     * @param[in] params  Common node parameters
+     * @param[in] scores  Input scores to the generate proposals layer node as a NodeID-Index pair
+     * @param[in] deltas  Input deltas to the generate proposals layer node as a NodeID-Index pair
+     * @param[in] anchors Input anchors to the generate proposals layer node as a NodeID-Index pair
+     * @param[in] info    Generate proposals operation information
+     *
+     * @return Node ID of the created node, EmptyNodeID in case of error
+     */
+    static NodeID add_generate_proposals_node(Graph &g, NodeParams params, NodeIdxPair scores, NodeIdxPair deltas,
+                                              NodeIdxPair anchors, GenerateProposalsInfo info);
     /** Adds a normalization layer node to the graph
      *
      * @param[in] g         Graph to add the node to
diff --git a/arm_compute/graph/TypePrinter.h b/arm_compute/graph/TypePrinter.h
index faa7f31911..ca62d4ec17 100644
--- a/arm_compute/graph/TypePrinter.h
+++ b/arm_compute/graph/TypePrinter.h
@@ -98,6 +98,9 @@ inline ::std::ostream &operator<<(::std::ostream &os, const NodeType &node_type)
         case NodeType::FullyConnectedLayer:
             os << "FullyConnectedLayer";
             break;
+        case NodeType::GenerateProposalsLayer:
+            os << "GenerateProposalsLayer";
+            break;
         case NodeType::NormalizationLayer:
             os << "NormalizationLayer";
             break;
diff --git a/arm_compute/graph/Types.h b/arm_compute/graph/Types.h
index ee136e2a1e..8377253338 100644
--- a/arm_compute/graph/Types.h
+++ b/arm_compute/graph/Types.h
@@ -138,6 +138,7 @@ enum class NodeType
     EltwiseLayer,
     FlattenLayer,
     FullyConnectedLayer,
+    GenerateProposalsLayer,
     NormalizationLayer,
     NormalizePlanarYUVLayer,
     PadLayer,
diff --git a/arm_compute/graph/backends/FunctionHelpers.h b/arm_compute/graph/backends/FunctionHelpers.h
index 548afd27c5..7242bc6ede 100644
--- a/arm_compute/graph/backends/FunctionHelpers.h
+++ b/arm_compute/graph/backends/FunctionHelpers.h
@@ -688,6 +688,55 @@ std::unique_ptr<IFunction> create_fully_connected_layer(FullyConnectedLayerNode
     return std::move(func);
 }
 
+/** Create a backend generate proposals layer function
+ *
+ * @tparam GenerateProposalsLayerFunction Backend generate proposals function
+ * @tparam TargetInfo                     Target-specific information
+ *
+ * @param[in] node Node to create the backend function for
+ * @param[in] ctx  Graph context
+ *
+ * @return Backend generate proposals layer function
+ */
+template <typename GenerateProposalsLayerFunction, typename TargetInfo>
+std::unique_ptr<IFunction> create_generate_proposals_layer(GenerateProposalsLayerNode &node, GraphContext &ctx)
+{
+    validate_node<TargetInfo>(node, 3 /* expected inputs */, 3 /* expected outputs */);
+
+    // Extract IO and info
+    typename TargetInfo::TensorType *scores              = get_backing_tensor<TargetInfo>(node.input(0));
+    typename TargetInfo::TensorType *deltas              = get_backing_tensor<TargetInfo>(node.input(1));
+    typename TargetInfo::TensorType *anchors             = get_backing_tensor<TargetInfo>(node.input(2));
+    typename TargetInfo::TensorType *proposals           = get_backing_tensor<TargetInfo>(node.output(0));
+    typename TargetInfo::TensorType *scores_out          = get_backing_tensor<TargetInfo>(node.output(1));
+    typename TargetInfo::TensorType *num_valid_proposals = get_backing_tensor<TargetInfo>(node.output(2));
+    const GenerateProposalsInfo      info                = node.info();
+
+    ARM_COMPUTE_ERROR_ON(scores == nullptr);
+    ARM_COMPUTE_ERROR_ON(deltas == nullptr);
+    ARM_COMPUTE_ERROR_ON(anchors == nullptr);
+    ARM_COMPUTE_ERROR_ON(proposals == nullptr);
+    ARM_COMPUTE_ERROR_ON(scores_out == nullptr);
+
+    // Create and configure function
+    auto func = support::cpp14::make_unique<GenerateProposalsLayerFunction>(get_memory_manager(ctx, TargetInfo::TargetType));
+    func->configure(scores, deltas, anchors, proposals, scores_out, num_valid_proposals, info);
+
+    // Log info
+    ARM_COMPUTE_LOG_GRAPH_INFO("Instantiated " << node.type()
+                               << " Target " << TargetInfo::TargetType
+                               << " Data Type: " << scores->info()->data_type()
+                               << " Scores shape: " << scores->info()->tensor_shape()
+                               << " Deltas shape: " << deltas->info()->tensor_shape()
+                               << " Anchors shape: " << anchors->info()->tensor_shape()
+                               << " Proposals shape: " << proposals->info()->tensor_shape()
+                               << " Num valid proposals shape: " << num_valid_proposals->info()->tensor_shape()
+                               << " Scores Out shape: " << scores_out->info()->tensor_shape()
+                               << std::endl);
+
+    return std::move(func);
+}
+
 /** Create a backend normalization layer function
  *
  * @tparam NormalizationLayerFunction Backend normalization function
diff --git a/arm_compute/graph/backends/ValidateHelpers.h b/arm_compute/graph/backends/ValidateHelpers.h
index 1b06f31bed..8942be2da8 100644
--- a/arm_compute/graph/backends/ValidateHelpers.h
+++ b/arm_compute/graph/backends/ValidateHelpers.h
@@ -228,6 +228,33 @@ Status validate_detection_output_layer(DetectionOutputLayerNode &node)
     return DetectionOutputLayer::validate(input0, input1, input2, output, detect_info);
 }
 
+/** Validates a Generate Proposals layer node
+ *
+ * @tparam GenerateProposalsLayer Generate Proposals layer type
+ *
+ * @param[in] node Node to validate
+ *
+ * @return Status
+ */
+template <typename GenerateProposalsLayer>
+Status validate_generate_proposals_layer(GenerateProposalsLayerNode &node)
+{
+    ARM_COMPUTE_LOG_GRAPH_VERBOSE("Validating GenerateProposalsLayer node with ID : " << node.id() << " and Name: " << node.name() << std::endl);
+    ARM_COMPUTE_RETURN_ERROR_ON(node.num_inputs() != 3);
+    ARM_COMPUTE_RETURN_ERROR_ON(node.num_outputs() != 3);
+
+    // Extract IO and info
+    arm_compute::ITensorInfo   *scores              = detail::get_backing_tensor_info(node.input(0));
+    arm_compute::ITensorInfo   *deltas              = detail::get_backing_tensor_info(node.input(1));
+    arm_compute::ITensorInfo   *anchors             = detail::get_backing_tensor_info(node.input(2));
+    arm_compute::ITensorInfo   *proposals           = get_backing_tensor_info(node.output(0));
+    arm_compute::ITensorInfo   *scores_out          = get_backing_tensor_info(node.output(1));
+    arm_compute::ITensorInfo   *num_valid_proposals = get_backing_tensor_info(node.output(2));
+    const GenerateProposalsInfo info                = node.info();
+
+    return GenerateProposalsLayer::validate(scores, deltas, anchors, proposals, scores_out, num_valid_proposals, info);
+}
+
 /** Validates a NormalizePlanarYUV layer node
  *
  * @tparam NormalizePlanarYUVLayer layer type
diff --git a/arm_compute/graph/frontend/Layers.h b/arm_compute/graph/frontend/Layers.h
index d10fa7f27a..1a71c89e54 100644
--- a/arm_compute/graph/frontend/Layers.h
+++ b/arm_compute/graph/frontend/Layers.h
@@ -608,6 +608,44 @@ private:
     const QuantizationInfo        _out_quant_info;
 };
 
+/** Generate Proposals Layer */
+class GenerateProposalsLayer final : public ILayer
+{
+public:
+    /** Construct a generate proposals layer.
+     *
+     * @param[in] ss_scores  Graph sub-stream for the scores.
+     * @param[in] ss_deltas  Graph sub-stream for the deltas.
+     * @param[in] ss_anchors Graph sub-stream for the anchors.
+     * @param[in] info       Generate Proposals operation information.
+     */
+    GenerateProposalsLayer(SubStream &&ss_scores, SubStream &&ss_deltas, SubStream &&ss_anchors, GenerateProposalsInfo info)
+        : _ss_scores(std::move(ss_scores)), _ss_deltas(std::move(ss_deltas)), _ss_anchors(std::move(ss_anchors)), _info(info)
+    {
+    }
+
+    /** Create layer and add to the given stream.
+     *
+     * @param[in] s Stream to add layer to.
+     *
+     * @return ID of the created node.
+     */
+    NodeID create_layer(IStream &s) override
+    {
+        NodeParams  common_params = { name(), s.hints().target_hint };
+        NodeIdxPair scores        = { _ss_scores.tail_node(), 0 };
+        NodeIdxPair deltas        = { _ss_deltas.tail_node(), 0 };
+        NodeIdxPair anchors       = { _ss_anchors.tail_node(), 0 };
+        return GraphBuilder::add_generate_proposals_node(s.graph(), common_params, scores, deltas, anchors, _info);
+    }
+
+private:
+    SubStream             _ss_scores;
+    SubStream             _ss_deltas;
+    SubStream             _ss_anchors;
+    GenerateProposalsInfo _info;
+};
+
 /** Normalization Layer */
 class NormalizationLayer final : public ILayer
 {
diff --git a/arm_compute/graph/nodes/GenerateProposalsLayerNode.h b/arm_compute/graph/nodes/GenerateProposalsLayerNode.h
new file mode 100644
index 0000000000..d8c0c78f22
--- /dev/null
+++ b/arm_compute/graph/nodes/GenerateProposalsLayerNode.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2019 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_GENERATE_PROPOSALS_NODE_H__
+#define __ARM_COMPUTE_GENERATE_PROPOSALS_NODE_H__
+
+#include "arm_compute/graph/INode.h"
+
+namespace arm_compute
+{
+namespace graph
+{
+/** Generate Proposals Layer node */
+class GenerateProposalsLayerNode final : public INode
+{
+public:
+    /** Constructor
+     *
+     * @param[in] info Generate proposals operation information.
+     */
+    GenerateProposalsLayerNode(GenerateProposalsInfo &info);
+    /** GenerateProposalsInfo accessor
+     *
+     * @return GenerateProposalsInfo
+     */
+    const GenerateProposalsInfo &info() 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:
+    GenerateProposalsInfo _info;
+};
+} // namespace graph
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_GENERATE_PROPOSALS_NODE_H__ */
diff --git a/arm_compute/graph/nodes/Nodes.h b/arm_compute/graph/nodes/Nodes.h
index 79ae5d4ae7..24064855e8 100644
--- a/arm_compute/graph/nodes/Nodes.h
+++ b/arm_compute/graph/nodes/Nodes.h
@@ -38,6 +38,7 @@
 #include "arm_compute/graph/nodes/EltwiseLayerNode.h"
 #include "arm_compute/graph/nodes/FlattenLayerNode.h"
 #include "arm_compute/graph/nodes/FullyConnectedLayerNode.h"
+#include "arm_compute/graph/nodes/GenerateProposalsLayerNode.h"
 #include "arm_compute/graph/nodes/InputNode.h"
 #include "arm_compute/graph/nodes/NormalizationLayerNode.h"
 #include "arm_compute/graph/nodes/NormalizePlanarYUVLayerNode.h"
diff --git a/arm_compute/graph/nodes/NodesFwd.h b/arm_compute/graph/nodes/NodesFwd.h
index 6a0be1bf59..cbda3092fd 100644
--- a/arm_compute/graph/nodes/NodesFwd.h
+++ b/arm_compute/graph/nodes/NodesFwd.h
@@ -44,6 +44,7 @@ class DummyNode;
 class EltwiseLayerNode;
 class FlattenLayerNode;
 class FullyConnectedLayerNode;
+class GenerateProposalsLayerNode;
 class InputNode;
 class NormalizationLayerNode;
 class NormalizePlanarYUVLayerNode;