CpuMaxUnpoolingLayerKernel.h

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 * Copyright (c) 2020-2022 Arm Limited.
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#ifndef ARM_COMPUTE_CPUMAXUNPOOLINGLAYERKERNEL_H
#define ARM_COMPUTE_CPUMAXUNPOOLINGLAYERKERNEL_H
 
#include "src/core/common/Macros.h"
#include "src/cpu/ICpuKernel.h"
 
namespace arm_compute
{
namespace cpu
{
namespace kernels
{
/** Interface for the pooling layer kernel */
class CpuMaxUnpoolingLayerKernel : public ICpuKernel<CpuMaxUnpoolingLayerKernel>
{
private:
    using MaxUnpoolingUKernelPtr = std::add_pointer<void(const ITensor *input, const ITensor *indices, ITensor *output, const Window &window)>::type;
 
public:
    /** Default constructor */
    CpuMaxUnpoolingLayerKernel() = default;
    ARM_COMPUTE_DISALLOW_COPY_ALLOW_MOVE(CpuMaxUnpoolingLayerKernel);
 
    /** Configure kernel for a given list of arguments
     *
     * @note Dst shape must be equal to the shape of the original src to pool.
     *
     * @param[in]  src       Source tensor to permute. Data types supported: QASYMM8/QASYMM8_SIGNED/F16/F32.
     * @param[in]  indices   Tensor containing the offset to store the src elements in the dst tensor.
     *                       @ref CpuMaxUnpooling with indices should precede this function in order to
     *                       properly reconstruct the output tensor.
     *                       The tensor shape of this tensor has to be equal to the src tensor shape. Data type supported: U32.
     * @param[out] dst       Destination tensor. Data types supported: Same as @p src
     * @param[in]  pool_info Contains pooling operation information described in @ref PoolingLayerInfo.
     */
    void configure(const ITensorInfo *src, const ITensorInfo *indices, ITensorInfo *dst, const PoolingLayerInfo &pool_info);
    /** Static function to check if given info will lead to a valid configuration of @ref CpuMaxUnpoolingLayerKernel
     *
     * @param[in]  src       Source tensor to permute. Data types supported: QASYMM8/QASYMM8_SIGNED/F16/F32.
     * @param[in]  indices   Tensor info of the indices of the maximal values. Data type supported: U32.
     * @param[out] dst       Destination tensor. Data types supported: Same as @p src
     * @param[in]  pool_info Contains pooling operation information described in @ref PoolingLayerInfo.
     *
     * @return a status
     */
    static Status validate(const ITensorInfo *src, const ITensorInfo *indices, const ITensorInfo *dst, const PoolingLayerInfo &pool_info);
 
    // Inherited methods overridden:
    void run_op(ITensorPack &tensors, const Window &window, const ThreadInfo &info) override;
 
    struct MaxUnpoolingKernel
    {
        const char                  *name;
        const DataTypeISASelectorPtr is_selected;
        MaxUnpoolingUKernelPtr       ukernel;
    };
 
    static const std::vector<MaxUnpoolingKernel> &get_available_kernels();
 
    const char *name() const override;
 
private:
    MaxUnpoolingUKernelPtr _run_method{ nullptr };
};
 
} // namespace kernels
} // namespace cpu
} // namespace arm_compute
#endif /*ARM_COMPUTE_CPUMAXUNPOOLINGLAYERKERNEL_H */