Compute Library
 21.02
StridedSliceLayerNode.cpp
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25 
26 #include "arm_compute/core/Utils.h"
30 
31 namespace arm_compute
32 {
33 namespace graph
34 {
36  const Coordinates &ends,
37  const BiStrides &strides,
39  : _starts(starts), _ends(ends), _strides(strides), _info(std::move(info))
40 {
41  _input_edges.resize(1, EmptyEdgeID);
42  _outputs.resize(1, NullTensorID);
43 }
44 
46 {
47  return _starts;
48 }
49 
51 {
52  return _ends;
53 }
54 
56 {
57  return _strides;
58 }
59 
61 {
62  return _info;
63 }
64 
66  const Coordinates &starts,
67  const Coordinates &ends,
68  const BiStrides &strides,
70 {
72 
73  TensorDescriptor output_desc = input_descriptor;
74  output_desc.shape = compute_strided_slice_output_shape(input_descriptor.shape, starts, ends, strides,
75  info.begin_mask(), info.end_mask(), info.shrink_axis_mask());
76 
77  return output_desc;
78 }
79 
81 {
82  if((input_id(0) != NullTensorID) && (output_id(0) != NullTensorID))
83  {
84  Tensor *dst = output(0);
85  ARM_COMPUTE_ERROR_ON(dst == nullptr);
86  dst->desc() = configure_output(0);
87  return true;
88  }
89  return false;
90 }
91 
93 {
94  ARM_COMPUTE_UNUSED(idx);
95  ARM_COMPUTE_ERROR_ON(idx >= _outputs.size());
96 
97  const Tensor *src = input(0);
98  ARM_COMPUTE_ERROR_ON(src == nullptr);
99 
100  return compute_output_descriptor(src->desc(), _starts, _ends, _strides, _info);
101 }
102 
104 {
106 }
107 
109 {
110  v.visit(*this);
111 }
112 } // namespace graph
113 } // namespace arm_compute
static TensorDescriptor compute_output_descriptor(const TensorDescriptor &input_descriptor, const Coordinates &starts, const Coordinates &ends, const BiStrides &strides, StridedSliceLayerInfo info)
Computes slice layer output descriptor.
#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.
void accept(INodeVisitor &v) override
Accepts a node visitor.
TensorDescriptor & desc()
TensorInfo metadata accessor.
Definition: Tensor.cpp:40
TensorDescriptor configure_output(size_t idx) const override
Calculates output configuration.
StridedSliceLayerNode(const Coordinates &starts, const Coordinates &ends, const BiStrides &strides, StridedSliceLayerInfo strided_slice_info)
Default Constructor.
#define ARM_COMPUTE_UNUSED(...)
To avoid unused variables warnings.
Definition: Error.h:152
bool forward_descriptors() override
Forwards descriptor information to outputs if possible.
virtual void visit(INode &n)=0
Visit INode.
Coordinates ends() const
End coordinates accessor.
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
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
BiStrides strides() const
Strides vector accessor.
constexpr EdgeID EmptyEdgeID
Definition: Types.h:75
ScaleKernelInfo info(interpolation_policy, default_border_mode, PixelValue(), sampling_policy, false)
int32_t shrink_axis_mask() const
Definition: Types.h:1753
TensorID output_id(size_t idx) const
Returns the tensor ID of a given output of the node.
Definition: INode.cpp:144
StridedSliceLayerInfo strided_slice_info() const
NodeType type() const override
Returns node&#39;s type.
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
Coordinates starts() const
Start coordinates accessor.
Tensor object.
Definition: Tensor.h:41
TensorShape compute_strided_slice_output_shape(TensorShape input_shape, Coordinates starts, Coordinates ends, Coordinates strides, int32_t begin_mask=0, int32_t end_mask=0, int32_t shrink_axis_mask=0, bool return_unshrinked=false)
Computes output shape of strided slice.