blob: 83c64d1c6f621eb84e70c14850cb775bb15fe3ef (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
/****************************************************************************
**
** Copyright (C) 2014 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the QtDataVisualization module.
**
** Licensees holding valid Qt Enterprise licenses may use this file in
** accordance with the Qt Enterprise License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
**
****************************************************************************/
#ifndef FREQUENCYSPECTRUM_H
#define FREQUENCYSPECTRUM_H
#include <QtCore/QVector>
/**
* Represents a frequency spectrum as a series of elements, each of which
* consists of a frequency, an amplitude and a phase.
*/
class FrequencySpectrum {
public:
FrequencySpectrum(int numPoints = 0);
struct Element {
Element()
: frequency(0.0), amplitude(0.0), phase(0.0), clipped(false)
{ }
/**
* Frequency in Hertz
*/
qreal frequency;
/**
* Amplitude in range [0.0, 1.0]
*/
qreal amplitude;
/**
* Phase in range [0.0, 2*PI]
*/
qreal phase;
/**
* Indicates whether value has been clipped during spectrum analysis
*/
bool clipped;
};
typedef QVector<Element>::iterator iterator;
typedef QVector<Element>::const_iterator const_iterator;
void reset();
int count() const;
Element& operator[](int index);
const Element& operator[](int index) const;
iterator begin();
iterator end();
const_iterator begin() const;
const_iterator end() const;
private:
QVector<Element> m_elements;
};
#endif // FREQUENCYSPECTRUM_H
|