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/*
* Copyright (c) 2017-2019 Arm Limited.
*
* SPDX-License-Identifier: MIT
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "Remap.h"
#include "Utils.h"
#include "tests/validation/Helpers.h"
#include <algorithm>
#include <array>
namespace arm_compute
{
namespace test
{
namespace validation
{
namespace reference
{
template <typename T>
SimpleTensor<T> remap(const SimpleTensor<T> &in, SimpleTensor<float> &map_x, SimpleTensor<float> &map_y, SimpleTensor<T> &valid_mask, InterpolationPolicy policy, BorderMode border_mode,
T constant_border_value)
{
ARM_COMPUTE_ERROR_ON_MSG(border_mode == BorderMode::REPLICATE, "BorderMode not supported");
SimpleTensor<T> out(in.shape(), in.data_type());
ARM_COMPUTE_ERROR_ON(out.num_elements() != map_x.num_elements());
const int width = in.shape().x();
const int height = in.shape().y();
const uint32_t num_elements = out.num_elements();
for(uint32_t idx = 0; idx < num_elements; idx++)
{
const Coordinates id_out = index2coord(out.shape(), idx);
valid_mask[idx] = 1;
Coordinates src_idx = id_out; // need to setup all coordinates and not just xy
src_idx.set(0, static_cast<int>(std::floor(map_x[idx])));
src_idx.set(1, static_cast<int>(std::floor(map_y[idx])));
if((0 <= map_y[idx]) && (map_y[idx] < height) && (0 <= map_x[idx]) && (map_x[idx] < width))
{
switch(policy)
{
case InterpolationPolicy::NEAREST_NEIGHBOR:
{
out[idx] = tensor_elem_at(in, src_idx, border_mode, constant_border_value);
break;
}
case InterpolationPolicy::BILINEAR:
{
(valid_bilinear_policy(map_x[idx], map_y[idx], width, height, border_mode)) ?
out[idx] = bilinear_policy(in, src_idx, map_x[idx], map_y[idx], border_mode, constant_border_value) :
valid_mask[idx] = 0;
break;
}
case InterpolationPolicy::AREA:
default:
ARM_COMPUTE_ERROR("Interpolation not supported");
break;
}
}
else
{
if(border_mode == BorderMode::UNDEFINED)
{
valid_mask[idx] = 0;
}
else
{
switch(policy)
{
case InterpolationPolicy::NEAREST_NEIGHBOR:
out[idx] = constant_border_value;
break;
case InterpolationPolicy::BILINEAR:
out[idx] = bilinear_policy(in, src_idx, map_x[idx], map_y[idx], border_mode, constant_border_value);
break;
case InterpolationPolicy::AREA:
default:
break;
}
}
}
}
return out;
}
template SimpleTensor<uint8_t> remap(const SimpleTensor<uint8_t> &src, SimpleTensor<float> &map_x, SimpleTensor<float> &map_y, SimpleTensor<uint8_t> &valid_mask, InterpolationPolicy policy,
BorderMode border_mode,
uint8_t constant_border_value);
} // namespace reference
} // namespace validation
} // namespace test
} // namespace arm_compute
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