src/armnn/backends/NeonWorkloads/NeonConvolution2dBaseWorkload.cpp

//
// Copyright © 2017 Arm Ltd. All rights reserved.
// See LICENSE file in the project root for full license information.
//

#include "backends/CpuTensorHandle.hpp"
#include "backends/ArmComputeTensorUtils.hpp"
#include "backends/NeonLayerSupport.hpp"

#include "NeonConvolution2dBaseWorkload.hpp"

namespace armnn
{

template<armnn::DataType dataType>
NeonConvolution2dBaseWorkload<dataType>::NeonConvolution2dBaseWorkload(const Convolution2dQueueDescriptor& descriptor,
                                                                       const WorkloadInfo& info)
    : TypedWorkload<Convolution2dQueueDescriptor, dataType>(descriptor, info)
{
    using arm_compute::NEDirectConvolutionLayer;
    using namespace armcomputetensorutils;

    ValidateData();

    // todo: check tensor shapes match

    arm_compute::ITensor& input = boost::polymorphic_downcast<INeonTensorHandle*>(m_Data.m_Inputs[0])->GetTensor();
    arm_compute::ITensor& output = boost::polymorphic_downcast<INeonTensorHandle*>(m_Data.m_Outputs[0])->GetTensor();

    BuildArmComputeTensor(m_KernelTensor, m_Data.m_Weight->GetTensorInfo());

    arm_compute::Tensor* optionalBiasTensor = nullptr;
    if (m_Data.m_Parameters.m_BiasEnabled)
    {
        BuildArmComputeTensor(m_BiasTensor, m_Data.m_Bias->GetTensorInfo());
        optionalBiasTensor = &m_BiasTensor;
    }

    arm_compute::PadStrideInfo padStrideInfo(m_Data.m_Parameters.m_StrideX,
                                             m_Data.m_Parameters.m_StrideY,
                                             m_Data.m_Parameters.m_PadLeft,
                                             m_Data.m_Parameters.m_PadRight,
                                             m_Data.m_Parameters.m_PadTop,
                                             m_Data.m_Parameters.m_PadBottom,
                                             arm_compute::DimensionRoundingType::FLOOR);

    const bool preferDirectConvolution =
        IsNeonDirectConvolutionPreferred(m_Data.m_Weight->GetTensorInfo(),
                                         m_Data.m_Parameters);

    if (preferDirectConvolution)
    {
        auto directConvolutionLayer = std::make_unique<arm_compute::NEDirectConvolutionLayer>();
        directConvolutionLayer->configure(&input,
                                          &m_KernelTensor,
                                          optionalBiasTensor,
                                          &output,
                                          padStrideInfo);
        m_ConvolutionLayer.reset(directConvolutionLayer.release());
    }
    else
    {
        auto convolutionLayer = std::make_unique<arm_compute::NEConvolutionLayer>();
        convolutionLayer->configure(&input,
                                    &m_KernelTensor,
                                    optionalBiasTensor,
                                    &output,
                                    padStrideInfo);
        m_ConvolutionLayer.reset(convolutionLayer.release());
    }
    BOOST_ASSERT(m_ConvolutionLayer);

    using Type = ResolveType<dataType>;

    InitialiseArmComputeTensorData(m_KernelTensor, m_Data.m_Weight->template GetConstTensor<Type>());
    if (m_Data.m_Parameters.m_BiasEnabled)
    {
        InitialiseArmComputeTensorData(m_BiasTensor, m_Data.m_Bias->template GetConstTensor<Type>());
    }
}

// Generate known implementations for linker
template class NeonConvolution2dBaseWorkload<DataType::Float32>;
template class NeonConvolution2dBaseWorkload<DataType::QuantisedAsymm8>;

} //namespace armnn