source: flair-src/trunk/lib/FlairCore/src/io_data.h@ 51

Last change on this file since 51 was 51, checked in by Sanahuja Guillaume, 6 years ago

gps

File size: 4.5 KB
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1// %flair:license{
2// This file is part of the Flair framework distributed under the
3// CECILL-C License, Version 1.0.
4// %flair:license}
5/*!
6 * \file io_data.h
7 * \brief Abstract class for data types.
8 * \author Guillaume Sanahuja, Copyright Heudiasyc UMR UTC/CNRS 7253
9 * \date 2012/03/21
10 * \version 4.0
11 */
12
13#ifndef IO_DATA_H
14#define IO_DATA_H
15
16#include <Mutex.h>
17
18class IODevice_impl;
19class io_data_impl;
20
21namespace flair {
22namespace core {
23
24class Object;
25
26class DataType {
27public:
28 virtual std::string GetDescription() const = 0;
29 // size in bytes
30 virtual size_t GetSize() const = 0;
31};
32
33class DummyType : public DataType {
34public:
35 size_t GetSize() const { return 0; }
36 std::string GetDescription() const { return "dummy"; };
37};
38extern DummyType dummyType;
39
40class ScalarType : public DataType {
41public:
42 ScalarType(size_t _size) : size(_size) {}
43 size_t GetSize() const { return size; }
44 virtual std::string GetDescription() const { return "scalar"; };
45
46private:
47 size_t size;
48};
49
50class SignedIntegerType : public ScalarType {
51public:
52 SignedIntegerType(size_t sizeInBits) : ScalarType(sizeInBits / 8) {}
53 std::string GetDescription() const {
54 return "int" + std::to_string(GetSize() * 8) + "_t";
55 };
56};
57extern SignedIntegerType Int8Type;
58extern SignedIntegerType Int16Type;
59
60class UnsignedIntegerType : public ScalarType {
61public:
62 UnsignedIntegerType(size_t sizeInBits) : ScalarType(sizeInBits / 8) {}
63 std::string GetDescription() const {
64 return "uint" + std::to_string(GetSize() * 8) + "_t";
65 };
66};
67extern UnsignedIntegerType UInt8Type;
68extern UnsignedIntegerType UInt16Type;
69
70class FloatType : public ScalarType {
71public:
72 FloatType() : ScalarType(4) {}
73 std::string GetDescription() const { return "float"; };
74};
75extern FloatType floatType;
76
77class DoubleType : public ScalarType {
78public:
79 DoubleType() : ScalarType(8) {}
80 std::string GetDescription() const { return "double"; };
81};
82extern DoubleType doubleType;
83
84/*! \class io_data
85*
86* \brief Abstract class for data types.
87*
88* Use this class to define a custom data type. Data types ares used for logging
89*and graphs. \n
90* The reimplemented class must call SetSize() in its constructor. \n
91* io_data can be constructed with n samples (see io_data::io_data).
92* In this case, old samples can be accessed throug io_data::Prev.
93*/
94class io_data : public Mutex {
95 friend class IODevice;
96 friend class ::IODevice_impl;
97 friend class ::io_data_impl;
98
99public:
100 /*!
101 * \brief Constructor
102 *
103 * Construct an io_data. \n
104 *
105 * \param parent parent
106 * \param name name
107 * \param n number of samples
108 */
109 io_data(const Object *parent, std::string name, int n);
110
111 /*!
112 * \brief Destructor
113 *
114 */
115 virtual ~io_data();
116
117 /*!
118 * \brief Set data time
119 *
120 * \param time time
121 */
122 void SetDataTime(Time time);
123
124 /*!
125 * \brief Data time
126 *
127 * \return data time
128 */
129 Time DataTime(void) const;
130
131 /*!
132 * \brief Previous data
133 *
134 * Access previous data. io_data must have been constructed with
135 * n>1, io_data::SetPtrToCircle must have been set and
136 * io_data::prev must have been allocated.
137 *
138 * \param n previous data number
139 *
140 * \return previous data
141 */
142 const io_data *Prev(int n) const;
143
144 virtual DataType const &GetDataType() const = 0;
145
146protected:
147 /*!
148 * \brief Specify the description of the reimplemented class data's
149 *
150 * This method must be called in the constructor of the reimplemented class,
151 *once by element. \n
152 * Each element description must be called in the same order as CopyDatas put
153 *the datas in the buffer. \n
154 * The description will be used for the log descriptor file.
155 *
156 * \param description description of the element
157 * \param datatype type of the element
158 */
159 void AppendLogDescription(std::string description, DataType const &datatype);
160
161 /*!
162 * \brief Set the datas to circle
163 *
164 * \param ptr pointer to the data to circle
165 */
166 void SetPtrToCircle(void **ptr);
167
168 /*!
169 * \brief Pointer to previous data
170 *
171 * Reimplemented class must allocate this pointer if n>1. \n
172 * Pointer must be allocated with the same kind of reimplemented class.
173 */
174 io_data *prev;
175
176private:
177 /*!
178 * \brief Copy datas
179 *
180 * This method is automatically called by IODevice::ProcessUpdate to log
181 *io_data datas. \n
182 * This method must be reimplemented, in order to copy the datas to the logs.
183 * Copied datas must be of size io_data::Size.
184 *
185 * \param dst destination buffer
186 */
187 virtual void CopyDatas(char *dst) const = 0;
188
189 io_data_impl *pimpl_;
190};
191
192} // end namespace core
193} // end namespace flair
194
195#endif // IO_DATA_H
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