blob: fb67ac56c1289e39cabf8d1e568f4fd0b5f1849f (
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
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
****************************************************************************/
#ifndef QAUDIOBUFFER_H
#define QAUDIOBUFFER_H
#include <QtCore/qshareddata.h>
#include <QtMultimedia/qtmultimediaglobal.h>
#include <QtMultimedia/qmultimedia.h>
#include <QtMultimedia/qaudio.h>
#include <QtMultimedia/qaudioformat.h>
QT_BEGIN_NAMESPACE
class QAbstractAudioBuffer;
class QAudioBufferPrivate;
class Q_MULTIMEDIA_EXPORT QAudioBuffer
{
public:
QAudioBuffer();
QAudioBuffer(QAbstractAudioBuffer *provider);
QAudioBuffer(const QAudioBuffer &other);
QAudioBuffer(const QByteArray &data, const QAudioFormat &format, qint64 startTime = -1);
QAudioBuffer(int numFrames, const QAudioFormat &format, qint64 startTime = -1); // Initialized to empty
QAudioBuffer& operator=(const QAudioBuffer &other);
~QAudioBuffer();
bool isValid() const;
QAudioFormat format() const;
int frameCount() const;
int sampleCount() const;
int byteCount() const;
qint64 duration() const;
qint64 startTime() const;
// Data modification
// void clear();
// Other ideas
// operator *=
// operator += (need to be careful about different formats)
// Data access
const void* constData() const; // Does not detach, preferred
const void* data() const; // Does not detach
void *data(); // detaches
// Structures for easier access to stereo data
template <typename T> struct StereoFrameDefault { enum { Default = 0 }; };
template <typename T> struct StereoFrame {
StereoFrame()
: left(T(StereoFrameDefault<T>::Default))
, right(T(StereoFrameDefault<T>::Default))
{
}
StereoFrame(T leftSample, T rightSample)
: left(leftSample)
, right(rightSample)
{
}
StereoFrame& operator=(const StereoFrame &other)
{
// Two straight assigns is probably
// cheaper than a conditional check on
// self assignment
left = other.left;
right = other.right;
return *this;
}
T left;
T right;
T average() const {return (left + right) / 2;}
void clear() {left = right = T(StereoFrameDefault<T>::Default);}
};
typedef StereoFrame<unsigned char> S8U;
typedef StereoFrame<signed char> S8S;
typedef StereoFrame<unsigned short> S16U;
typedef StereoFrame<signed short> S16S;
typedef StereoFrame<float> S32F;
template <typename T> const T* constData() const {
return static_cast<const T*>(constData());
}
template <typename T> const T* data() const {
return static_cast<const T*>(data());
}
template <typename T> T* data() {
return static_cast<T*>(data());
}
private:
QAudioBufferPrivate *d;
};
template <> struct QAudioBuffer::StereoFrameDefault<unsigned char> { enum { Default = 128 }; };
template <> struct QAudioBuffer::StereoFrameDefault<unsigned short> { enum { Default = 32768 }; };
QT_END_NAMESPACE
Q_DECLARE_METATYPE(QAudioBuffer)
#endif // QAUDIOBUFFER_H
|
