#pragma once
#include "constant_tensor_descriptor.cuh"

// this is ugly, only for 4d
template <class InDesc, class WeiDesc>
__host__ __device__ constexpr auto get_convolution_output_default_4d_tensor_descriptor(InDesc,
                                                                                       WeiDesc)
{
    constexpr auto in_desc  = InDesc{};
    constexpr auto wei_desc = WeiDesc{};

    constexpr auto I0 = Number<0>{};
    constexpr auto I1 = Number<1>{};
    constexpr auto I2 = Number<2>{};
    constexpr auto I3 = Number<3>{};

    static_assert(in_desc.GetDimension() == 4, "input nDim is not 4");
    static_assert(wei_desc.GetDimension() == 4, "weight nDim is not 4");
    static_assert(in_desc.GetLength(I1) == wei_desc.GetLength(I1),
                  "input & weight dimension not consistent");

    constexpr auto N  = in_desc.GetLength(I0);
    constexpr auto HI = in_desc.GetLength(I2);
    constexpr auto WI = in_desc.GetLength(I3);

    constexpr auto K = wei_desc.GetLength(I0);
    constexpr auto S = wei_desc.GetLength(I2);
    constexpr auto R = wei_desc.GetLength(I3);

    constexpr auto HO = HI - S + 1;
    constexpr auto WO = WI - R + 1;

    return make_ConstantTensorDescriptor(Sequence<N, K, HO, WO>{});
}