/*******************************************************
 * Copyright (c) 2014, ArrayFire
 * All rights reserved.
 *
 * This file is distributed under 3-clause BSD license.
 * The complete license agreement can be obtained at:
 * http://arrayfire.com/licenses/BSD-3-Clause
 ********************************************************/

#include <af/dim4.hpp>
#include <Array.hpp>
#include <transform.hpp>
#include <kernel/transform.hpp>
#include <stdexcept>

namespace opencl
{
    template<typename T>
    Array<T> transform(const Array<T> &in, const Array<float> &tf,
                       const af::dim4 &odims, const af_interp_type method,
                       const bool inverse, const bool perspective)
    {
        Array<T> out = createEmptyArray<T>(odims);

        switch(method) {
        case AF_INTERP_NEAREST:
        case AF_INTERP_LOWER:
            kernel::transform<T, 1>(out, in, tf, inverse, perspective, method);
            break;
        case AF_INTERP_BILINEAR:
        case AF_INTERP_BILINEAR_COSINE:
            kernel::transform<T, 2>(out, in, tf, inverse, perspective, method);
            break;
        case AF_INTERP_BICUBIC:
        case AF_INTERP_BICUBIC_SPLINE:
            kernel::transform<T, 3>(out, in, tf, inverse, perspective, method);
            break;
        default:
            AF_ERROR("Unsupported interpolation type", AF_ERR_ARG);
        }
        return out;
    }


#define INSTANTIATE(T)                                                                  \
    template Array<T> transform(const Array<T> &in, const Array<float> &tf,             \
                                const af::dim4 &odims, const af_interp_type method,     \
                                const bool inverse, const bool perspective);

    INSTANTIATE(float)
    INSTANTIATE(double)
    INSTANTIATE(cfloat)
    INSTANTIATE(cdouble)
    INSTANTIATE(int)
    INSTANTIATE(uint)
    INSTANTIATE(intl)
    INSTANTIATE(uintl)
    INSTANTIATE(uchar)
    INSTANTIATE(char)
    INSTANTIATE(short)
    INSTANTIATE(ushort)
}
