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24 #include "arm_compute/core/SubTensorInfo.h"
26 #include "arm_compute/core/Error.h"
27 #include "arm_compute/core/Helpers.h"
28 #include "arm_compute/core/Validate.h"
29 #include "support/ToolchainSupport.h"
31 using namespace arm_compute;
35 /** Extends parent shape depending on subtensor's coordinates and shape
37 * @param parent_shape Parent shape
38 * @param shape Subtensor shape
39 * @param coords Subtensor coordinates inside parent tensor
41 * @return Extended parent shape
43 TensorShape extend_parent_shape(TensorShape parent_shape, TensorShape shape, Coordinates coords)
45 // Subtensor should not index in x, y dimensions.
46 ARM_COMPUTE_ERROR_ON((coords.x() != 0) || (coords.y() != 0));
48 // Cannot extend on x, y ?
49 ARM_COMPUTE_ERROR_ON((parent_shape.total_size() != 0) && (parent_shape.x() != shape.x()) && (parent_shape.y() != shape.y()));
52 for(unsigned int i = 0; i < TensorShape::num_max_dimensions; ++i)
54 int dimension_extend = coords[i] + static_cast<int>(shape[i]);
55 if((dimension_extend > static_cast<int>(parent_shape[i])) && (dimension_extend > 0))
57 parent_shape.set(i, static_cast<size_t>(dimension_extend));
65 SubTensorInfo::SubTensorInfo()
66 : _parent(nullptr), _tensor_shape(), _coords(), _valid_region{ Coordinates(), _tensor_shape }, _extend_parent(false)
70 SubTensorInfo::SubTensorInfo(ITensorInfo *parent, TensorShape tensor_shape, Coordinates coords, bool extend_parent)
71 : _parent(parent), _tensor_shape(tensor_shape), _coords(coords), _valid_region{ Coordinates(), _tensor_shape }, _extend_parent(extend_parent)
73 ARM_COMPUTE_ERROR_ON(parent == nullptr);
74 // Check if subtensor is valid if parent is configured
75 if(parent->tensor_shape().total_size() != 0 && !_extend_parent)
77 ARM_COMPUTE_ERROR_ON_INVALID_SUBTENSOR(parent->tensor_shape(), coords, tensor_shape);
80 // Initialize valid region
81 _valid_region = ValidRegion{ Coordinates(), _tensor_shape };
84 std::unique_ptr<ITensorInfo> SubTensorInfo::clone() const
86 // Clone creates a TensorInfo object from SubTensorInfo's parent which will conclude to a TensorInfo
87 // For now it does not make sense to copy a SubTensorInfo explicitly
88 ARM_COMPUTE_ERROR_ON(_parent == nullptr);
89 auto clone_obj = _parent->clone();
90 clone_obj->set_tensor_shape(_tensor_shape);
91 clone_obj->set_valid_region(_valid_region);
95 ITensorInfo &SubTensorInfo::set_tensor_shape(const TensorShape &shape)
97 ARM_COMPUTE_ERROR_ON(_parent == nullptr);
99 // Check if subtensor is valid if parent is configured
100 if(_parent->tensor_shape().total_size() != 0 && !_extend_parent)
102 ARM_COMPUTE_ERROR_ON_INVALID_SUBTENSOR(_parent->tensor_shape(), _coords, shape);
103 _valid_region = ValidRegion{ _coords, shape };
105 else if(_extend_parent) // Extend parent shape, configure if specified
107 ARM_COMPUTE_ERROR_ON((_parent->data_type() == DataType::UNKNOWN) && (_parent->format() == Format::UNKNOWN));
108 TensorShape parent_extended_shape = extend_parent_shape(_parent->tensor_shape(), shape, _coords);
109 _parent->set_tensor_shape(parent_extended_shape);
110 _parent->set_valid_region(ValidRegion{ Coordinates(), parent_extended_shape });
112 _tensor_shape = shape;
116 bool SubTensorInfo::extend_padding(const PaddingSize &padding)
118 ARM_COMPUTE_ERROR_ON(_parent == nullptr);
119 ARM_COMPUTE_ERROR_ON(!_parent->is_resizable());
120 ARM_COMPUTE_ERROR_ON(_parent->total_size() == 0);
122 // Extend parent padding if required
123 return _parent->extend_padding(padding);
126 size_t SubTensorInfo::offset_element_in_bytes(const Coordinates &pos) const
128 ARM_COMPUTE_ERROR_ON_COORDINATES_DIMENSIONS_GTE(pos, _tensor_shape.num_dimensions());
130 size_t offset = offset_first_element_in_bytes();
131 const Strides &strides = strides_in_bytes();
133 for(size_t i = 0; i < _tensor_shape.num_dimensions(); ++i)
135 offset += pos[i] * strides[i];