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

#include <backends/WorkloadFactory.hpp>
#include <backends/OutputHandler.hpp>

#include <boost/core/ignore_unused.hpp>
#include <boost/optional.hpp>

namespace armnn
{

template <typename QueueDescriptorType>
constexpr bool IsOperationQueueDescriptor(const QueueDescriptorType&) { return true; }

template <>
constexpr bool IsOperationQueueDescriptor(const MemCopyQueueDescriptor&) { return false; }

template <>
constexpr bool IsOperationQueueDescriptor(const ConstantQueueDescriptor&) { return false; }

template <>
constexpr bool IsOperationQueueDescriptor(const PermuteQueueDescriptor&) { return false; }

// Reference workload factory.
class RefWorkloadFactory : public IWorkloadFactory
{
public:
    explicit RefWorkloadFactory();
    virtual ~RefWorkloadFactory() {}

    virtual Compute GetCompute() const override { return Compute::CpuRef; }

    static bool IsLayerSupported(const Layer& layer, boost::optional<DataType> dataType,
                                 std::string& outReasonIfUnsupported);

    virtual bool SupportsSubTensors() const override { return false; }

    virtual std::unique_ptr<ITensorHandle> CreateSubTensorHandle(ITensorHandle& parent,
                                                                 TensorShape const& subTensorShape,
                                                                 unsigned int const* subTensorOrigin) const override
    {
        boost::ignore_unused(parent, subTensorShape, subTensorOrigin);
        return nullptr;
    }

    virtual std::unique_ptr<ITensorHandle> CreateTensorHandle(const TensorInfo& tensorInfo) const override;

    virtual std::unique_ptr<ITensorHandle> CreateTensorHandle(const TensorInfo& tensorInfo,
                                                              DataLayout dataLayout) const override;

    virtual std::unique_ptr<IWorkload> CreateInput(const InputQueueDescriptor& descriptor,
                                                   const WorkloadInfo& info) const override;

    virtual std::unique_ptr<IWorkload> CreateOutput(const OutputQueueDescriptor& descriptor,
                                                    const WorkloadInfo& info) const override;

    virtual std::unique_ptr<IWorkload> CreateActivation(const ActivationQueueDescriptor& descriptor,
                                                        const WorkloadInfo&              info) const override;

    virtual std::unique_ptr<IWorkload> CreateSoftmax(const SoftmaxQueueDescriptor& descriptor,
                                                     const WorkloadInfo&           info) const override;

    virtual std::unique_ptr<IWorkload> CreateSplitter(const SplitterQueueDescriptor& descriptor,
                                                      const WorkloadInfo&            info) const override;

    virtual std::unique_ptr<IWorkload> CreateMerger(const MergerQueueDescriptor& descriptor,
                                                    const WorkloadInfo&          info) const override;

    virtual std::unique_ptr<IWorkload> CreateFullyConnected(const FullyConnectedQueueDescriptor& descriptor,
                                                            const WorkloadInfo&                  info) const override;

    virtual std::unique_ptr<IWorkload> CreatePooling2d(const Pooling2dQueueDescriptor& descriptor,
                                                       const WorkloadInfo&           info) const override;

    virtual std::unique_ptr<IWorkload> CreatePermute(const PermuteQueueDescriptor& descriptor,
                                                     const WorkloadInfo&           info) const override;

    virtual std::unique_ptr<IWorkload> CreateConvolution2d(const Convolution2dQueueDescriptor& descriptor,
                                                           const WorkloadInfo&               info) const override;

    virtual std::unique_ptr<IWorkload> CreateDepthwiseConvolution2d(
        const DepthwiseConvolution2dQueueDescriptor& descriptor, const WorkloadInfo& info) const override;

    virtual std::unique_ptr<IWorkload> CreateNormalization(const NormalizationQueueDescriptor& descriptor,
                                                           const WorkloadInfo&                 info) const override;

    virtual std::unique_ptr<IWorkload> CreateMultiplication(const MultiplicationQueueDescriptor& descriptor,
                                                            const WorkloadInfo&                  info) const override;

    virtual std::unique_ptr<IWorkload> CreateAddition(const AdditionQueueDescriptor& descriptor,
                                                      const WorkloadInfo&            info) const override;

    virtual std::unique_ptr<IWorkload> CreateBatchNormalization(const BatchNormalizationQueueDescriptor& descriptor,
                                                                const WorkloadInfo& info) const override;

    virtual std::unique_ptr<IWorkload> CreateMemCopy(const MemCopyQueueDescriptor& descriptor,
                                                     const WorkloadInfo& info) const override;

    virtual std::unique_ptr<IWorkload> CreateResizeBilinear(const ResizeBilinearQueueDescriptor& descriptor,
                                                            const WorkloadInfo& info) const override;

    virtual std::unique_ptr<IWorkload> CreateFakeQuantization(const FakeQuantizationQueueDescriptor& descriptor,
                                                              const WorkloadInfo& info) const override;

    virtual std::unique_ptr<IWorkload> CreateL2Normalization(const L2NormalizationQueueDescriptor& descriptor,
                                                             const WorkloadInfo& info) const override;

    virtual std::unique_ptr<IWorkload> CreateConstant(const ConstantQueueDescriptor& descriptor,
                                                      const WorkloadInfo& info) const override;

    virtual std::unique_ptr<IWorkload> CreateReshape(const ReshapeQueueDescriptor& descriptor,
                                                     const WorkloadInfo& info) const override;

    virtual std::unique_ptr<IWorkload> CreateFloor(const FloorQueueDescriptor& descriptor,
                                                   const WorkloadInfo& info) const override;

    virtual std::unique_ptr<IWorkload> CreateLstm(const LstmQueueDescriptor& descriptor,
                                                  const WorkloadInfo& info) const override;

    virtual std::unique_ptr<IWorkload> CreateConvertFp16ToFp32(const ConvertFp16ToFp32QueueDescriptor& descriptor,
                                                               const WorkloadInfo& info) const override;

    virtual std::unique_ptr<IWorkload> CreateConvertFp32ToFp16(const ConvertFp32ToFp16QueueDescriptor& descriptor,
                                                               const WorkloadInfo& info) const override;

    virtual std::unique_ptr<IWorkload> CreateDivision(const DivisionQueueDescriptor& descriptor,
                                                      const WorkloadInfo& info) const override;

    virtual std::unique_ptr<IWorkload> CreateSubtraction(const SubtractionQueueDescriptor& descriptor,
                                                         const WorkloadInfo& info) const override;

    virtual std::unique_ptr<IWorkload> CreateMean(const MeanQueueDescriptor& descriptor,
                                                  const WorkloadInfo& Info) const override;

    virtual std::unique_ptr<IWorkload> CreatePad(const PadQueueDescriptor& descriptor,
                                                 const WorkloadInfo& info) const override;
private:

    template <typename F32Workload, typename U8Workload, typename QueueDescriptorType>
    std::unique_ptr<IWorkload> MakeWorkload(const QueueDescriptorType& descriptor, const WorkloadInfo& info) const;

};

} // namespace armnn