/*******************************************************

* 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 <af/defines.h>

#include <af/image.h>

#include <handle.hpp>

#include <err_common.hpp>

#include <backend.hpp>

#include <regions.hpp>

using af::dim4;

using namespace detail;

template<typename T>

static af_array regions(af_array const &in, af_connectivity connectivity)

{

return getHandle<T>(regions<T>(getArray<char>(in), connectivity));

}

af_err af_regions(af_array *out, const af_array in, const af_connectivity connectivity, const af_dtype type)

{

try {

ARG_ASSERT(2, (connectivity==AF_CONNECTIVITY_4 || connectivity==AF_CONNECTIVITY_8));

ArrayInfo info = getInfo(in);

af::dim4 dims = info.dims();

dim_t in_ndims = dims.ndims();

DIM_ASSERT(1, (in_ndims <= 3 && in_ndims >= 2));

af_dtype in_type = info.getType();

if (in_type != b8) {

TYPE_ERROR(1, in_type);

}

af_array output;

switch(type) {

case f32: output = regions<float >(in, connectivity); break;

case f64: output = regions<double>(in, connectivity); break;

case s32: output = regions<int >(in, connectivity); break;

case u32: output = regions<uint >(in, connectivity); break;

case s16: output = regions<short >(in, connectivity); break;

case u16: output = regions<ushort>(in, connectivity); break;

default : TYPE_ERROR(0, type);

}

std::swap(*out, output);

}

CATCHALL;

return AF_SUCCESS;

}