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//
// Copyright © 2017 Arm Ltd. All rights reserved.
// SPDX-License-Identifier: MIT
//
#pragma once
#include <armnn/ILayerVisitor.hpp>
#include <armnn/LayerVisitorBase.hpp>
#include <armnnSerializer/ISerializer.hpp>
#include <iostream>
#include <unordered_map>
#include <Schema_generated.h>
namespace armnnSerializer
{
class SerializerVisitor : public armnn::LayerVisitorBase<armnn::VisitorNoThrowPolicy>
{
public:
SerializerVisitor() : m_layerId(0) {};
~SerializerVisitor() {}
flatbuffers::FlatBufferBuilder& GetFlatBufferBuilder()
{
return m_flatBufferBuilder;
}
std::vector<unsigned int>& GetInputIds()
{
return m_inputIds;
}
std::vector<unsigned int>& GetOutputIds()
{
return m_outputIds;
}
std::vector<flatbuffers::Offset<armnn::armnnSerializer::AnyLayer>>& GetSerializedLayers()
{
return m_serializedLayers;
}
void VisitAdditionLayer(const armnn::IConnectableLayer* layer,
const char* name = nullptr) override;
void VisitInputLayer(const armnn::IConnectableLayer* layer,
armnn::LayerBindingId id,
const char* name = nullptr) override;
void VisitOutputLayer(const armnn::IConnectableLayer* layer,
armnn::LayerBindingId id,
const char* name = nullptr) override;
void VisitMultiplicationLayer(const armnn::IConnectableLayer* layer,
const char* name = nullptr) override;
private:
/// Creates the Input Slots and Output Slots and LayerBase for the layer.
flatbuffers::Offset<armnn::armnnSerializer::LayerBase> CreateLayerBase(
const armnn::IConnectableLayer* layer,
const armnn::armnnSerializer::LayerType layerType);
/// Creates the serializer AnyLayer for the layer and adds it to m_serializedLayers.
void CreateAnyLayer(const flatbuffers::Offset<void>& layer, const armnn::armnnSerializer::Layer serializerLayer);
///Function which maps Guid to an index
uint32_t GetSerializedId(unsigned int guid);
/// Creates the serializer InputSlots for the layer.
std::vector<flatbuffers::Offset<armnn::armnnSerializer::InputSlot>> CreateInputSlots(
const armnn::IConnectableLayer* layer);
/// Creates the serializer OutputSlots for the layer.
std::vector<flatbuffers::Offset<armnn::armnnSerializer::OutputSlot>> CreateOutputSlots(
const armnn::IConnectableLayer* layer);
/// FlatBufferBuilder to create our layers' FlatBuffers.
flatbuffers::FlatBufferBuilder m_flatBufferBuilder;
/// AnyLayers required by the SerializedGraph.
std::vector<flatbuffers::Offset<armnn::armnnSerializer::AnyLayer>> m_serializedLayers;
/// Guids of all Input Layers required by the SerializedGraph.
std::vector<unsigned int> m_inputIds;
/// Guids of all Output Layers required by the SerializedGraph.
std::vector<unsigned int> m_outputIds;
/// Mapped Guids of all Layers to match our index.
std::unordered_map<unsigned int, uint32_t > m_guidMap;
/// layer within our FlatBuffer index.
uint32_t m_layerId;
};
class Serializer : public ISerializer
{
public:
Serializer() {}
~Serializer() {}
/// Serializes the network to ArmNN SerializedGraph.
/// @param [in] inNetwork The network to be serialized.
void Serialize(const armnn::INetwork& inNetwork) override;
/// Serializes the SerializedGraph to the stream.
/// @param [stream] the stream to save to
/// @return true if graph is Serialized to the Stream, false otherwise
bool SaveSerializedToStream(std::ostream& stream) override;
private:
/// Visitor to contruct serialized network
SerializerVisitor m_SerializerVisitor;
};
} //namespace armnnSerializer
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