| 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 |