source: trunk/doc/src/snippets/phonon/samplebackend/main.cpp@ 5

Last change on this file since 5 was 2, checked in by Dmitry A. Kuminov, 16 years ago

Initially imported qt-all-opensource-src-4.5.1 from Trolltech.
File size: 3.5 KB
Line 
1//! [snippet]
2QObject *Backend::createObject(BackendInterface::Class c, QObject *parent, const QList<QVariant> &args)
3{
4 switch (c) {
5 case MediaObjectClass:
6 return new MediaObject(parent);
7 case VolumeFaderEffectClass:
8 return new VolumeFaderEffect(parent);
9 case AudioOutputClass:
10 return new AudioOutput(parent);
11 case AudioDataOutputClass:
12 return new AudioDataOutput(parent);
13 case VisualizationClass:
14 return new Visualization(parent);
15 case VideoDataOutputClass:
16 return new VideoDataOutput(parent);
17 case EffectClass:
18 return new Effect(args[0].toInt(), parent);
19 case VideoWidgetClass:
20 return new VideoWidget(qobject_cast<QWidget *>(parent));
21 }
22 return 0;
23}
24
25QSet<int> Backend::objectDescriptionIndexes(ObjectDescriptionType type) const
26{
27 QSet<int> set;
28 switch(type)
29 {
30 case Phonon::AudioOutputDeviceType:
31 // use AudioDeviceEnumerator to list ALSA and OSS devices
32 set << 10000 << 10001;
33 break;
34 case Phonon::AudioCaptureDeviceType:
35 set << 20000 << 20001;
36 break;
37 case Phonon::VideoOutputDeviceType:
38 break;
39 case Phonon::VideoCaptureDeviceType:
40 set << 30000 << 30001;
41 break;
42 case Phonon::VisualizationType:
43 case Phonon::AudioCodecType:
44 case Phonon::VideoCodecType:
45 case Phonon::ContainerFormatType:
46 break;
47 case Phonon::EffectType:
48 set << 0x7F000001;
49 break;
50 }
51 return set;
52}
53
54QHash<QByteArray, QVariant> Backend::objectDescriptionProperties(ObjectDescriptionType type, int index) const
55{
56 QHash<QByteArray, QVariant> ret;
57 switch (type) {
58 case Phonon::AudioOutputDeviceType:
59 switch (index) {
60 case 10000:
61 ret.insert("name", QLatin1String("internal Soundcard"));
62 break;
63 case 10001:
64 ret.insert("name", QLatin1String("USB Headset"));
65 ret.insert("icon", KIcon("usb-headset"));
66 ret.insert("available", false);
67 break;
68 }
69 break;
70 case Phonon::AudioCaptureDeviceType:
71 switch (index) {
72 case 20000:
73 ret.insert("name", QLatin1String("Soundcard"));
74 ret.insert("description", QLatin1String("first description"));
75 break;
76 case 20001:
77 ret.insert("name", QLatin1String("DV"));
78 ret.insert("description", QLatin1String("second description"));
79 break;
80 }
81 break;
82 case Phonon::VideoOutputDeviceType:
83 break;
84 case Phonon::VideoCaptureDeviceType:
85 switch (index) {
86 case 30000:
87 ret.insert("name", QLatin1String("USB Webcam"));
88 ret.insert("description", QLatin1String("first description"));
89 break;
90 case 30001:
91 ret.insert("name", QLatin1String("DV"));
92 ret.insert("description", QLatin1String("second description"));
93 break;
94 }
95 break;
96 case Phonon::VisualizationType:
97 break;
98 case Phonon::AudioCodecType:
99 break;
100 case Phonon::VideoCodecType:
101 break;
102 case Phonon::ContainerFormatType:
103 break;
104 case Phonon::EffectType:
105 switch (index) {
106 case 0x7F000001:
107 ret.insert("name", QLatin1String("Delay"));
108 ret.insert("description", QLatin1String("Simple delay effect with time, feedback and level controls."));
109 break;
110 }
111 break;
112 }
113 return ret;
114}
115//! [snippet]
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