1 | // Copyright (C) 2022 The Qt Company Ltd. |
2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-3.0-only |
3 | #include "qaudiolistener.h" |
4 | #include "qaudioengine_p.h" |
5 | #include "resonance_audio.h" |
6 | #include <qaudiosink.h> |
7 | #include <qurl.h> |
8 | #include <qdebug.h> |
9 | #include <qaudiodecoder.h> |
10 | |
11 | QT_BEGIN_NAMESPACE |
12 | |
13 | class QAudioListenerPrivate |
14 | { |
15 | public: |
16 | QAudioEngine *engine = nullptr; |
17 | QVector3D pos; |
18 | QQuaternion rotation; |
19 | }; |
20 | |
21 | /*! |
22 | \class QAudioListener |
23 | \inmodule QtSpatialAudio |
24 | \ingroup spatialaudio |
25 | \ingroup multimedia_audio |
26 | |
27 | \brief Defines the position and orientation of the person listening to a sound field |
28 | defined by QAudioEngine. |
29 | |
30 | A QAudioEngine can have exactly one listener that defines the position and orientation |
31 | of the person listening to the sound field. |
32 | */ |
33 | |
34 | /*! |
35 | Creates a listener for the spatial audio engine for \a engine. |
36 | */ |
37 | QAudioListener::QAudioListener(QAudioEngine *engine) |
38 | : d(new QAudioListenerPrivate) |
39 | { |
40 | setEngine(engine); |
41 | } |
42 | |
43 | /*! |
44 | Destroys the listener. |
45 | */ |
46 | QAudioListener::~QAudioListener() |
47 | { |
48 | // Unregister this listener from the engine |
49 | setEngine(nullptr); |
50 | delete d; |
51 | } |
52 | |
53 | /*! |
54 | Sets the listener's position in 3D space to \a pos. Units are in centimeters |
55 | by default. |
56 | |
57 | \sa QAudioEngine::distanceScale |
58 | */ |
59 | void QAudioListener::setPosition(QVector3D pos) |
60 | { |
61 | auto *ep = QAudioEnginePrivate::get(engine: d->engine); |
62 | if (!ep) |
63 | return; |
64 | pos *= ep->distanceScale; |
65 | if (d->pos == pos) |
66 | return; |
67 | |
68 | d->pos = pos; |
69 | if (ep && ep->resonanceAudio->api) { |
70 | ep->resonanceAudio->api->SetHeadPosition(x: pos.x(), y: pos.y(), z: pos.z()); |
71 | ep->listenerPositionDirty = true; |
72 | } |
73 | } |
74 | |
75 | /*! |
76 | Returns the current position of the listener. |
77 | */ |
78 | QVector3D QAudioListener::position() const |
79 | { |
80 | auto *ep = QAudioEnginePrivate::get(engine: d->engine); |
81 | if (!ep) |
82 | return QVector3D(); |
83 | return d->pos/ep->distanceScale; |
84 | } |
85 | |
86 | /*! |
87 | Sets the listener's orientation in 3D space to \a q. |
88 | */ |
89 | void QAudioListener::setRotation(const QQuaternion &q) |
90 | { |
91 | d->rotation = q; |
92 | auto *ep = QAudioEnginePrivate::get(engine: d->engine); |
93 | if (ep && ep->resonanceAudio->api) |
94 | ep->resonanceAudio->api->SetHeadRotation(x: d->rotation.x(), y: d->rotation.y(), z: d->rotation.z(), w: d->rotation.scalar()); |
95 | } |
96 | |
97 | /*! |
98 | Returns the listener's orientation in 3D space. |
99 | */ |
100 | QQuaternion QAudioListener::rotation() const |
101 | { |
102 | return d->rotation; |
103 | } |
104 | |
105 | /*! |
106 | \internal |
107 | */ |
108 | void QAudioListener::setEngine(QAudioEngine *engine) |
109 | { |
110 | if (d->engine) { |
111 | auto *ed = QAudioEnginePrivate::get(engine: d->engine); |
112 | ed->listener = nullptr; |
113 | } |
114 | d->engine = engine; |
115 | if (d->engine) { |
116 | auto *ed = QAudioEnginePrivate::get(engine: d->engine); |
117 | if (ed->listener) { |
118 | qWarning() << "Ignoring attempt to add a second listener to the spatial audio engine." ; |
119 | d->engine = nullptr; |
120 | return; |
121 | } |
122 | ed->listener = this; |
123 | } |
124 | } |
125 | |
126 | /*! |
127 | Returns the engine associated with this listener. |
128 | */ |
129 | QAudioEngine *QAudioListener::engine() const |
130 | { |
131 | return d->engine; |
132 | } |
133 | |
134 | QT_END_NAMESPACE |
135 | |