Compute Library
 21.08
SpaceToDepth.cpp
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24 #include "SpaceToDepth.h"
25 
27 
28 namespace arm_compute
29 {
30 namespace test
31 {
32 namespace validation
33 {
34 namespace reference
35 {
36 // Space to Batch
37 template <typename T>
39 {
40  SimpleTensor<T> result(dst_shape, src.data_type());
41 
42  const auto width_out = static_cast<int>(dst_shape[0]);
43  const auto height_out = static_cast<int>(dst_shape[1]);
44  const auto channel_out = static_cast<int>(dst_shape[2]);
45 
46  const auto width_in = static_cast<int>(src.shape()[0]);
47  const auto height_in = static_cast<int>(src.shape()[1]);
48  const auto channel_in = static_cast<int>(src.shape()[2]);
49 
50  const auto batch = static_cast<int>(src.shape()[3]);
51 
52  const auto block_width = block_shape;
53  const auto block_height = block_shape;
54 
55  int out_pos = 0;
56  for(int ba = 0; ba < batch; ++ba)
57  {
58  for(int outC = 0; outC < channel_out; ++outC)
59  {
60  unsigned int inC = outC % channel_in;
61 
62  int shift_w = (outC / channel_in) % block_width;
63  int shift_h = (outC / channel_in) / block_width;
64 
65  for(int outH = 0; outH < height_out; ++outH)
66  {
67  for(int outW = 0; outW < width_out; ++outW)
68  {
69  const auto in_pos = ((ba * channel_in + inC) * height_in + ((outH * block_height + shift_h))) * width_in + (outW * block_width + shift_w);
70  result[out_pos] = src[in_pos];
71  ++out_pos;
72  }
73  }
74  }
75  }
76  return result;
77 }
78 
79 template SimpleTensor<float> space_to_depth(const SimpleTensor<float> &src, const TensorShape &dst_shape, const int block_shape);
80 template SimpleTensor<half> space_to_depth(const SimpleTensor<half> &src, const TensorShape &dst_shape, const int block_shape);
81 } // namespace reference
82 } // namespace validation
83 } // namespace test
84 } // namespace arm_compute
Shape of a tensor.
Definition: TensorShape.h:39
DataType data_type() const override
Data type of the tensor.
Definition: SimpleTensor.h:357
TensorShape shape() const override
Shape of the tensor.
Definition: SimpleTensor.h:320
SimpleTensor< float > src
Definition: DFT.cpp:155
Copyright (c) 2017-2021 Arm Limited.
Simple tensor object that stores elements in a consecutive chunk of memory.
Definition: SimpleTensor.h:58
SimpleTensor< T > space_to_depth(const SimpleTensor< T > &src, const TensorShape &dst_shape, const int block_shape)