Compute Library
 21.02
Lut.cpp
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25 
26 #include <cstring>
27 
28 using namespace arm_compute;
29 
31  : _allocator()
32 {
33 }
34 
36  : _allocator()
37 {
38  _allocator.init(num_elements, data_type);
39 }
40 
41 size_t Lut::num_elements() const
42 {
43  return _allocator.num_elements();
44 }
45 
46 uint32_t Lut::index_offset() const
47 {
48  return (DataType::S16 == _allocator.type()) ? num_elements() / 2 : 0;
49 }
50 
51 size_t Lut::size_in_bytes() const
52 {
53  return _allocator.size();
54 }
55 
57 {
58  return _allocator.type();
59 }
60 
61 uint8_t *Lut::buffer() const
62 {
63  return _allocator.data();
64 }
65 
66 void Lut::clear()
67 {
68  ARM_COMPUTE_ERROR_ON(this->buffer() == nullptr);
69  std::memset(this->buffer(), 0, this->size_in_bytes());
70 }
71 
73 {
74  return &_allocator;
75 }
size_t size_in_bytes() const override
Returns the total size in bytes of the LUT.
Definition: Lut.cpp:51
uint8_t * data() const
Interface to be implemented by the child class to return the pointer to the allocate data...
size_t num_elements() const
Returns the total number of elements in the LUT.
uint32_t index_offset() const override
Indicates the offset that needs to be applied to the raw index before performing a lookup in the LUT...
Definition: Lut.cpp:46
#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
DataType type() const override
Returns the type of the LUT.
Definition: Lut.cpp:56
Basic interface to allocate LUTs&#39;.
Definition: ILutAllocator.h:35
Copyright (c) 2017-2021 Arm Limited.
const DataType data_type
Definition: Im2Col.cpp:150
ILutAllocator * allocator()
Return a pointer to the lut&#39;s allocator.
Definition: Lut.cpp:72
void init(size_t num_elements, DataType data_type)
Allocate an LUT of the requested number of elements and data_type.
1 channel, 1 S16 per channel
Lut()
Constructor.
Definition: Lut.cpp:30
size_t num_elements() const override
Returns the total number of elements in the LUT.
Definition: Lut.cpp:41
uint8_t * buffer() const override
Returns a pointer to the start of the LUT.
Definition: Lut.cpp:61
size_t size() const
Returns the total size in bytes of the LUT.
DataType
Available data types.
Definition: Types.h:77
DataType type() const
Returns the type of the LUT.
void clear() override
Clears the LUT by setting every element to zero.
Definition: Lut.cpp:66