MNN/source/backend/cpu/compute/Convolution1x1Strassen.hpp

//
//  Convolution1x1Strassen.hpp
//  MNN
//
//  Created by MNN on 2019/02/12.
//  Copyright © 2018, Alibaba Group Holding Limited
//

#ifndef Convolution1x1Strassen_hpp
#define Convolution1x1Strassen_hpp

#include <functional>
#include "backend/cpu/CPUConvolution.hpp"
#include "backend/cpu/compute/StrassenMatmulComputor.hpp"
namespace MNN {
class Convolution1x1Strassen : public CPUConvolution {
public:
    Convolution1x1Strassen(const Convolution2DCommon *common, Backend *b, const float *originWeight,
                           size_t originWeightSize, const float *bias, size_t biasSize);

    Convolution1x1Strassen(const Convolution2DCommon *common,               // NOLINT
                           const RearrangedWeightParam *rearranged_params,  // NOLINT
                           Backend *b, const float *originWeight,           // NOLINT
                           size_t originWeightSize, const float *bias,      // NOLINT
                           size_t biasSize);

    virtual ~Convolution1x1Strassen();

    virtual ErrorCode onExecute(const std::vector<Tensor *> &inputs, const std::vector<Tensor *> &outputs) override;

    virtual ErrorCode onResize(const std::vector<Tensor *> &inputs, const std::vector<Tensor *> &outputs) override;

    virtual std::vector<MNN::RearrangedType> RearrangedTypes() const override {
        return std::vector<MNN::RearrangedType>{RearrangedType_RT_CONVOLUTION_1X1STRASSEN};
    }

    virtual std::vector<std::shared_ptr<Tensor>> RearrangedWeights() const override {
        return std::vector<std::shared_ptr<Tensor>>{mWeight};
    }

private:
    ErrorCode setupBias(const float *bias, size_t biasSize);

private:
    std::shared_ptr<Tensor> mWeight;
    std::shared_ptr<Tensor> mBias;

    bool mBorrowedWeight = false;

    struct Unit {
        bool mValid = true;
        std::shared_ptr<Tensor> mTempBias;
        std::shared_ptr<Tensor> mTempInput;
        std::shared_ptr<Tensor> mTempWeight;
        std::shared_ptr<Tensor> mTempOutput;
        std::vector<Tensor *> mTempInputVector;
        std::vector<Tensor *> mTempOutputVector;
        std::shared_ptr<StrassenMatrixComputor> mStracssenComputor;
    };

    std::vector<Unit> mUnits;
    std::shared_ptr<Tensor> mTempInputBatch;
    std::shared_ptr<Tensor> mTempOutputBatch;
    bool mNeedPretreat = false;
    std::function<void(const float *srcBatch, float *dstBatch)> mPretreatFunction;
};
} // namespace MNN

#endif /* Convolution1x1Strassen_hpp */