Compute Library
 20.02.1
ReorgLayerNode.cpp
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25 
29 
30 namespace arm_compute
31 {
32 namespace graph
33 {
35  : _stride(stride)
36 {
37  _input_edges.resize(1, EmptyEdgeID);
38  _outputs.resize(1, NullTensorID);
39 }
40 
42 {
43  return _stride;
44 }
45 
47 {
48  const unsigned int input_width = get_dimension_size(input_descriptor, DataLayoutDimension::WIDTH);
49  const unsigned int input_height = get_dimension_size(input_descriptor, DataLayoutDimension::HEIGHT);
50  const unsigned int input_channel = get_dimension_size(input_descriptor, DataLayoutDimension::CHANNEL);
51 
53  ARM_COMPUTE_ERROR_ON_MSG((input_width % stride != 0), "The width of the input tensor must be a multiple of stride");
54  ARM_COMPUTE_ERROR_ON_MSG((input_height % stride != 0), "The height of the input tensor must be a multiple of stride");
55 
56  const DataLayout data_layout = input_descriptor.layout;
57  TensorDescriptor output_descriptor = input_descriptor;
58  output_descriptor.shape.set(get_dimension_idx(data_layout, DataLayoutDimension::WIDTH), input_width / stride);
59  output_descriptor.shape.set(get_dimension_idx(data_layout, DataLayoutDimension::HEIGHT), input_height / stride);
60  output_descriptor.shape.set(get_dimension_idx(data_layout, DataLayoutDimension::CHANNEL), input_channel * stride * stride);
61 
62  return output_descriptor;
63 }
64 
66 {
67  if((input_id(0) != NullTensorID) && (output_id(0) != NullTensorID))
68  {
69  Tensor *dst = output(0);
70  ARM_COMPUTE_ERROR_ON(dst == nullptr);
71  dst->desc() = configure_output(0);
72  return true;
73  }
74  return false;
75 }
76 
78 {
79  ARM_COMPUTE_UNUSED(idx);
80  ARM_COMPUTE_ERROR_ON(idx >= _outputs.size());
81 
82  const Tensor *src = input(0);
83  ARM_COMPUTE_ERROR_ON(src == nullptr);
84 
85  return compute_output_descriptor(src->desc(), _stride);
86 }
87 
89 {
90  return NodeType::ReorgLayer;
91 }
92 
94 {
95  v.visit(*this);
96 }
97 } // namespace graph
98 } // namespace arm_compute
const DataLayout data_layout
Definition: Im2Col.cpp:146
int stride() const
Stride value to use for reorganizing the values in the output tensor.
size_t get_dimension_size(const TensorDescriptor &descriptor, const DataLayoutDimension data_layout_dimension)
Get size of a tensor's given dimension depending on its layout.
Definition: Utils.cpp:123
#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
TensorDescriptor configure_output(size_t idx) const override
Calculates output configuration.
Copyright (c) 2017-2020 ARM Limited.
ReorgLayerNode(int stride)
Constructor.
#define ARM_COMPUTE_UNUSED(...)
To avoid unused variables warnings.
Definition: Error.h:152
virtual void visit(INode &n)=0
Visit INode.
Tensor * output(size_t idx) const
Returns the tensor of a given output of the node.
Definition: INode.cpp:158
#define ARM_COMPUTE_ERROR_ON_MSG(cond, msg)
Definition: Error.h:456
void accept(INodeVisitor &v) override
Accepts a node visitor.
NodeType type() const override
Returns node's type.
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:132
static TensorDescriptor compute_output_descriptor(const TensorDescriptor &input_descriptor, int stride)
Computes reorg output descriptor.
constexpr EdgeID EmptyEdgeID
Definition: Types.h:73
TensorID output_id(size_t idx) const
Returns the tensor ID of a given output of the node.
Definition: INode.cpp:144
TensorShape & set(size_t dimension, size_t value, bool apply_dim_correction=true)
Accessor to set the value of one of the dimensions.
Definition: TensorShape.h:78
bool forward_descriptors() override
Forwards descriptor information to outputs if possible.
constexpr TensorID NullTensorID
Constant NodeID specifying an equivalent of null node.
Definition: Types.h:69
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
DataLayout
[DataLayout enum definition]
Definition: Types.h:117
size_t get_dimension_idx(DataLayout data_layout, const DataLayoutDimension data_layout_dimension)
Get index of a tensor's given dimension depending on its layout.
Definition: Utils.cpp:129
cast configure & src
Definition: Cast.cpp:169
Tensor object.
Definition: Tensor.h:41