Compute Library
 21.02
SliceLayerNode.cpp
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25 
26 #include "arm_compute/core/Utils.h"
30 
31 namespace arm_compute
32 {
33 namespace graph
34 {
36  : _starts(starts), _ends(ends)
37 {
38  _input_edges.resize(1, EmptyEdgeID);
39  _outputs.resize(1, NullTensorID);
40 }
41 
43 {
44  return _starts;
45 }
46 
48 {
49  return _ends;
50 }
51 
53  const Coordinates &starts, const Coordinates &ends)
54 {
56 
57  TensorDescriptor output_desc = input_descriptor;
58  output_desc.shape = arm_compute::misc::shape_calculator::compute_slice_shape(input_descriptor.shape, starts, ends);
59 
60  return output_desc;
61 }
62 
64 {
65  if((input_id(0) != NullTensorID) && (output_id(0) != NullTensorID))
66  {
67  Tensor *dst = output(0);
68  ARM_COMPUTE_ERROR_ON(dst == nullptr);
69  dst->desc() = configure_output(0);
70  return true;
71  }
72  return false;
73 }
74 
76 {
77  ARM_COMPUTE_UNUSED(idx);
78  ARM_COMPUTE_ERROR_ON(idx >= _outputs.size());
79 
80  const Tensor *src = input(0);
81  ARM_COMPUTE_ERROR_ON(src == nullptr);
82 
83  return compute_output_descriptor(src->desc(), _starts, _ends);
84 }
85 
87 {
88  return NodeType::SliceLayer;
89 }
90 
92 {
93  v.visit(*this);
94 }
95 } // namespace graph
96 } // namespace arm_compute
TensorShape compute_slice_shape(const TensorShape &input_shape, const Coordinates &starts, const Coordinates &ends)
Calculate the slice output shape of a tensor.
SliceLayerNode(const Coordinates &starts, const Coordinates &ends)
Default Constructor.
void accept(INodeVisitor &v) override
Accepts a node visitor.
#define ARM_COMPUTE_ERROR_ON(cond)
If the condition is true then an error message is printed and an exception thrown.
Definition: Error.h:466
SimpleTensor< float > src
Definition: DFT.cpp:155
Copyright (c) 2017-2021 Arm Limited.
TensorDescriptor & desc()
TensorInfo metadata accessor.
Definition: Tensor.cpp:40
#define ARM_COMPUTE_UNUSED(...)
To avoid unused variables warnings.
Definition: Error.h:152
virtual void visit(INode &n)=0
Visit INode.
TensorDescriptor configure_output(size_t idx) const override
Calculates output configuration.
Tensor * output(size_t idx) const
Returns the tensor of a given output of the node.
Definition: INode.cpp:158
Coordinates of an item.
Definition: Coordinates.h:37
Coordinates starts() const
Start coordinates accessor.
Coordinates ends() const
End coordinates accessor.
TensorID input_id(size_t idx) const
Returns the tensor ID of a given input of the node.
Definition: INode.cpp:137
NodeType
Supported nodes.
Definition: Types.h:142
constexpr EdgeID EmptyEdgeID
Definition: Types.h:75
static TensorDescriptor compute_output_descriptor(const TensorDescriptor &input_descriptor, const Coordinates &starts, const Coordinates &ends)
Computes slice layer output descriptor.
bool forward_descriptors() override
Forwards descriptor information to outputs if possible.
NodeType type() const override
Returns node&#39;s type.
TensorID output_id(size_t idx) const
Returns the tensor ID of a given output of the node.
Definition: INode.cpp:144
constexpr TensorID NullTensorID
Constant NodeID specifying an equivalent of null node.
Definition: Types.h:71
Node visitor interface.
Definition: INodeVisitor.h:34
Tensor * input(size_t idx) const
Returns the tensor of a given input of the node.
Definition: INode.cpp:150
Tensor object.
Definition: Tensor.h:41