Compute Library
 21.02
Convolution.cpp
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25 
26 #include "Convolution.h"
27 #include "Utils.h"
28 
29 namespace arm_compute
30 {
31 namespace test
32 {
33 namespace validation
34 {
35 namespace reference
36 {
37 template <typename T>
38 SimpleTensor<T> convolution(const SimpleTensor<uint8_t> &src, DataType output_data_type, const int16_t *conv, uint32_t scale, BorderMode border_mode, uint8_t constant_border_value,
39  const unsigned int width,
40  const unsigned int height)
41 {
42  ARM_COMPUTE_ERROR_ON(scale == 0);
43  ARM_COMPUTE_ERROR_ON(scale >= static_cast<unsigned int>(std::numeric_limits<int32_t>::max()));
44 
45  SimpleTensor<T> dst(src.shape(), output_data_type);
46  SimpleTensor<int32_t> sum(src.shape(), output_data_type);
47  const uint32_t num_elements = src.num_elements();
48 #if defined(_OPENMP)
49  #pragma omp parallel for
50 #endif /* _OPENMP */
51  for(uint32_t element_idx = 0; element_idx < num_elements; ++element_idx)
52  {
53  const Coordinates id = index2coord(src.shape(), element_idx);
54  apply_2d_spatial_filter(id, src, sum, TensorShape(width, height), conv, 1, border_mode, constant_border_value);
55  dst[element_idx] = saturate_cast<T>(tensor_elem_at<int32_t>(sum, id, border_mode, constant_border_value) / static_cast<int>(scale));
56  }
57 
58  return dst;
59 }
60 
61 template SimpleTensor<uint8_t> convolution(const SimpleTensor<uint8_t> &src, DataType output_data_type, const int16_t *conv, uint32_t scale, BorderMode border_mode, uint8_t constant_border_value,
62  const unsigned int widht, const unsigned int height);
63 template SimpleTensor<int16_t> convolution(const SimpleTensor<uint8_t> &src, DataType output_data_type, const int16_t *conv, uint32_t scale, BorderMode border_mode, uint8_t constant_border_value,
64  const unsigned int widht, const unsigned int height);
65 } // namespace reference
66 } // namespace validation
67 } // namespace test
68 } // namespace arm_compute
BorderMode
Methods available to handle borders.
Definition: Types.h:265
Shape of a tensor.
Definition: TensorShape.h:39
void apply_2d_spatial_filter(Coordinates coord, const SimpleTensor< T > &src, SimpleTensor< U > &dst, const TensorShape &filter_shape, const V *filter_itr, double scale, BorderMode border_mode, T constant_border_value=T(0))
Definition: Utils.h:103
DATA_TYPE sum(__global const DATA_TYPE *input)
Calculate sum of a vector.
#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
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.
Coordinates of an item.
Definition: Coordinates.h:37
Coordinates index2coord(const TensorShape &shape, int index)
Convert a linear index into n-dimensional coordinates.
Definition: Utils.h:460
SimpleTensor< T > convolution(const SimpleTensor< uint8_t > &src, DataType output_data_type, const int16_t *conv, uint32_t scale, BorderMode border_mode, uint8_t constant_border_value, const unsigned int width, const unsigned int height)
Definition: Convolution.cpp:38
Simple tensor object that stores elements in a consecutive chunk of memory.
Definition: SimpleTensor.h:58
T saturate_cast(T val)
Saturate a value of type T against the numeric limits of type U.
Definition: Utils.h:414
int num_elements() const override
Number of elements of the tensor.
Definition: SimpleTensor.h:406
SimpleTensor< T > scale(const SimpleTensor< T > &src, float scale_x, float scale_y, InterpolationPolicy policy, BorderMode border_mode, T constant_border_value, SamplingPolicy sampling_policy, bool ceil_policy_scale, bool align_corners)
Definition: Scale.cpp:185
DataType
Available data types.
Definition: Types.h:77