ClConvertFullyConnectedWeightsKernel.h

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 * Copyright (c) 2018-2021 Arm Limited.
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#ifndef ARM_COMPUTE_CL_CONVERT_FULLYCONNECTED_WEIGHTS_KERNEL_H
#define ARM_COMPUTE_CL_CONVERT_FULLYCONNECTED_WEIGHTS_KERNEL_H

#include "src/core/common/Macros.h"
#include "src/gpu/cl/ClCompileContext.h"
#include "src/gpu/cl/IClKernel.h"

namespace arm_compute
{
/** Interface to convert the 2D Fully Connected weights from NCHW to NHWC or vice versa.
 *
 * @note This function can be applied to the 2D weights used by a Fully Connected layer if:
 *       - It follows a Convolution layer
 *       - The data layout used by the network does not match the one the model has been trained in.
 *
 * @note This function assumes the weights are already reshaped (transposed)
 */
namespace opencl
{
namespace kernels
{
class ClConvertFullyConnectedWeightsKernel : public IClKernel
{
public:
    ClConvertFullyConnectedWeightsKernel();
    ARM_COMPUTE_DISALLOW_COPY_ALLOW_MOVE(ClConvertFullyConnectedWeightsKernel);
    /** Set the src and dst tensor.
     *
     * @param[in]  compile_context    The compile context to be used.
     * @param[in]  src                Source weights tensor info to convert. Must be 2 dimensional. Data types supported: All.
     * @param[out] dst                The converted weights tensor info. Shape and Data Type: Same as @p src.
     * @param[in]  original_src_shape Shape of the original src tensor (the one entering fully connected layer).
     * @param[in]  data_layout        The data layout the weights have been trained in.
     */
    void configure(const CLCompileContext &compile_context, const ITensorInfo *src, ITensorInfo *dst, const TensorShape &original_src_shape, DataLayout data_layout);
    /** Static function to check if given info will lead to a valid configuration
     *
     * Similar to @ref ClConvertFullyConnectedWeightsKernel::configure()
     *
     * @return a status
     */
    static Status validate(const ITensorInfo *src, const ITensorInfo *dst, const TensorShape &original_src_shape, DataLayout data_layout);

    // Inherited methods overridden:
    void run_op(ITensorPack &tensors, const Window &window, ::cl::CommandQueue &queue) override;
};
} // namespace kernels
} // namespace opencl
} // namespace arm_compute
#endif /* ARM_COMPUTE_CL_CONVERT_FULLYCONNECTED_WEIGHTS_KERNEL_H */