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/*
* Copyright (c) 2017-2020 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 "arm_compute/core/SubTensorInfo.h"
#include "arm_compute/core/Error.h"
#include "arm_compute/core/Helpers.h"
#include "arm_compute/core/Validate.h"
using namespace arm_compute;
namespace
{
/** Extends parent shape depending on subtensor's coordinates and shape
*
* @param parent_shape Parent shape
* @param shape Subtensor shape
* @param coords Subtensor coordinates inside parent tensor
*
* @return Extended parent shape
*/
TensorShape extend_parent_shape(TensorShape parent_shape, TensorShape shape, Coordinates coords)
{
// Extend shape
for(unsigned int i = 0; i < TensorShape::num_max_dimensions; ++i)
{
int dimension_extend = coords[i] + static_cast<int>(shape[i]);
if((dimension_extend > static_cast<int>(parent_shape[i])) && (dimension_extend > 0))
{
parent_shape.set(i, static_cast<size_t>(dimension_extend));
}
}
return parent_shape;
}
} // namespace
SubTensorInfo::SubTensorInfo()
: _parent(nullptr), _tensor_shape(), _coords(), _valid_region{ Coordinates(), _tensor_shape }, _extend_parent(false)
{
}
SubTensorInfo::SubTensorInfo(ITensorInfo *parent, TensorShape tensor_shape, Coordinates coords, bool extend_parent)
: _parent(parent), _tensor_shape(tensor_shape), _coords(coords), _valid_region{ Coordinates(), _tensor_shape }, _extend_parent(extend_parent)
{
ARM_COMPUTE_ERROR_ON(parent == nullptr);
// Check if subtensor is valid if parent is configured
if(parent->tensor_shape().total_size() != 0 && !_extend_parent)
{
ARM_COMPUTE_ERROR_ON_INVALID_SUBTENSOR(parent->tensor_shape(), coords, tensor_shape);
}
// Initialize valid region
_valid_region = ValidRegion{ Coordinates(), _tensor_shape };
}
std::unique_ptr<ITensorInfo> SubTensorInfo::clone() const
{
// Clone creates a TensorInfo object from SubTensorInfo's parent which will conclude to a TensorInfo
// For now it does not make sense to copy a SubTensorInfo explicitly
ARM_COMPUTE_ERROR_ON(_parent == nullptr);
auto clone_obj = _parent->clone();
clone_obj->set_tensor_shape(_tensor_shape);
clone_obj->set_valid_region(_valid_region);
return clone_obj;
}
ITensorInfo &SubTensorInfo::set_tensor_shape(const TensorShape &shape)
{
ARM_COMPUTE_ERROR_ON(_parent == nullptr);
// Check if subtensor is valid if parent is configured
if(_parent->tensor_shape().total_size() != 0 && !_extend_parent)
{
ARM_COMPUTE_ERROR_ON_INVALID_SUBTENSOR(_parent->tensor_shape(), _coords, shape);
_valid_region = ValidRegion{ _coords, shape };
}
else if(_extend_parent) // Extend parent shape, configure if specified
{
ARM_COMPUTE_ERROR_ON((_parent->data_type() == DataType::UNKNOWN) && (_parent->format() == Format::UNKNOWN));
TensorShape parent_extended_shape = extend_parent_shape(_parent->tensor_shape(), shape, _coords);
_parent->set_tensor_shape(parent_extended_shape);
_parent->set_valid_region(ValidRegion{ Coordinates(), parent_extended_shape });
}
_tensor_shape = shape;
return *this;
}
bool SubTensorInfo::extend_padding(const PaddingSize &padding)
{
ARM_COMPUTE_ERROR_ON(_parent == nullptr);
ARM_COMPUTE_ERROR_ON(!_parent->is_resizable());
ARM_COMPUTE_ERROR_ON(_parent->total_size() == 0);
// Check that you do not extend padding on sub-tensors unless XY shape matches parent tensor
// TODO(COMPMID-3558): Remove _extend_parent check
if(!_extend_parent && (padding.left || padding.right))
{
ARM_COMPUTE_ERROR_ON(_parent->tensor_shape().x() != tensor_shape().x());
}
if(!_extend_parent && (padding.top || padding.bottom))
{
ARM_COMPUTE_ERROR_ON(_parent->tensor_shape().y() != tensor_shape().y());
}
// Extend parent padding if required
return _parent->extend_padding(padding);
}
int32_t SubTensorInfo::offset_element_in_bytes(const Coordinates &pos) const
{
ARM_COMPUTE_ERROR_ON_COORDINATES_DIMENSIONS_GTE(pos, _tensor_shape.num_dimensions());
int32_t offset = offset_first_element_in_bytes();
const Strides &strides = strides_in_bytes();
for(size_t i = 0; i < _tensor_shape.num_dimensions(); ++i)
{
offset += pos[i] * strides[i];
}
return offset;
}
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