QuantizedLstmLayer.hpp

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//
// Copyright © 2017 Arm Ltd. All rights reserved.
// SPDX-License-Identifier: MIT
//
#pragma once

#include <Layer.hpp>

namespace armnn
{

class ScopedCpuTensorHandle;

struct QuantizedLstmParameters
{
    std::unique_ptr<ScopedCpuTensorHandle> m_InputToInputWeights;
    std::unique_ptr<ScopedCpuTensorHandle> m_InputToForgetWeights;
    std::unique_ptr<ScopedCpuTensorHandle> m_InputToCellWeights;
    std::unique_ptr<ScopedCpuTensorHandle> m_InputToOutputWeights;

    std::unique_ptr<ScopedCpuTensorHandle> m_RecurrentToInputWeights;
    std::unique_ptr<ScopedCpuTensorHandle> m_RecurrentToForgetWeights;
    std::unique_ptr<ScopedCpuTensorHandle> m_RecurrentToCellWeights;
    std::unique_ptr<ScopedCpuTensorHandle> m_RecurrentToOutputWeights;

    std::unique_ptr<ScopedCpuTensorHandle> m_InputGateBias;
    std::unique_ptr<ScopedCpuTensorHandle> m_ForgetGateBias;
    std::unique_ptr<ScopedCpuTensorHandle> m_CellBias;
    std::unique_ptr<ScopedCpuTensorHandle> m_OutputGateBias;
};

class QuantizedLstmLayer : public Layer
{
public:

    QuantizedLstmParameters m_QuantizedLstmParameters;

    virtual std::unique_ptr<IWorkload> CreateWorkload(const IWorkloadFactory& factory) const override;

    QuantizedLstmLayer* Clone(Graph& graph) const override;

    void ValidateTensorShapesFromInputs() override;

    std::vector<TensorShape> InferOutputShapes(const std::vector<TensorShape>& inputShapes) const override;

    void Accept(ILayerVisitor& visitor) const override;

protected:
    QuantizedLstmLayer(const char* name);

    ~QuantizedLstmLayer() = default;

    Layer::ConstantTensors GetConstantTensorsByRef() override;
};

} // namespace armnn