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39
40#include <QtCore/qmetaobject.h>
41#include <QtCore/qtimer.h>
42
43#include "qmediacontrol.h"
44#include "qmediacontrol_p.h"
45
46
47
48QT_BEGIN_NAMESPACE
49
50/*!
51 \class QMediaControl
52 \inmodule QtMultimedia
53
54 \ingroup multimedia
55 \ingroup multimedia_control
56 \ingroup multimedia_core
57
58 \brief The QMediaControl class provides a base interface for media service controls.
59
60 Media controls provide an interface to individual features provided by a
61 media service. Most services implement a principal control which exposes
62 the core functionality of the service and a number of optional controls which
63 expose any additional functionality.
64
65 A pointer to a control implemented by a media service can be obtained using
66 the \l {QMediaService::requestControl()} member of QMediaService. If the
67 service doesn't implement a control it will instead return a null pointer.
68
69 \snippet multimedia-snippets/media.cpp Request control
70
71 Alternatively if the IId of the control has been declared using
72 Q_MEDIA_DECLARE_CONTROL the template version of
73 QMediaService::requestControl() can be used to request the service without
74 explicitly passing the IId or using qobject_cast().
75
76 \snippet multimedia-snippets/media.cpp Request control templated
77
78 Most application code will not interface directly with a media service's
79 controls, instead the QMediaObject which owns the service acts as an
80 intermediary between one or more controls and the application.
81
82 \sa QMediaService, QMediaObject
83*/
84
85/*!
86 \macro Q_MEDIA_DECLARE_CONTROL(Class, IId)
87 \relates QMediaControl
88
89 The Q_MEDIA_DECLARE_CONTROL macro declares an \a IId for a \a Class that
90 inherits from QMediaControl.
91
92 Declaring an IId for a QMediaControl allows an instance of that control to
93 be requested from QMediaService::requestControl() without explicitly
94 passing the IId.
95
96 \snippet multimedia-snippets/media.cpp Request control templated
97
98 \sa QMediaService::requestControl()
99*/
100
101/*!
102 Destroys a media control.
103*/
104
105QMediaControl::~QMediaControl()
106{
107 delete d_ptr;
108}
109
110/*!
111 Constructs a media control with the given \a parent.
112*/
113
114QMediaControl::QMediaControl(QObject *parent)
115 : QObject(parent)
116 , d_ptr(new QMediaControlPrivate)
117{
118 d_ptr->q_ptr = this;
119}
120
121/*!
122 \internal
123*/
124
125QMediaControl::QMediaControl(QMediaControlPrivate &dd, QObject *parent)
126 : QObject(parent)
127 , d_ptr(&dd)
128
129{
130 d_ptr->q_ptr = this;
131}
132
133#include "moc_qmediacontrol.cpp"
134QT_END_NAMESPACE
135
136