Add support for rooms to the spatial audio engine

The new QSpatialAudioRoom class allows defining a room.
If the listener is inside the room, the properties of that
room will get enabled, giving us first order reflections
and reverb.

Multiple rooms can be defined and the engine will automatically
update the room to be used when the listener position changes.
If the listener is inside multiple rooms, the room with the
smallest volume will get chosen.

Updated the spatialaudio example to allow modifying some
of the room properties for testing.

Change-Id: I94ffe0a6b7e570c4ea77898e021d7fe042fb9b52
Reviewed-by: Lars Knoll <lars.knoll@qt.io>

1 files changed, 54 insertions, 8 deletions

diff --git a/examples/multimedia/spatialaudio/main.cpp b/examples/multimedia/spatialaudio/main.cpp
index a7881ce99..160672430 100644
--- a/examples/multimedia/spatialaudio/main.cpp
+++ b/examples/multimedia/spatialaudio/main.cpp
@@ -67,31 +67,66 @@ public:
 
         azimuth = new QSlider(Qt::Horizontal);
         azimuth->setRange(-180, 180);
-        grid->addWidget(new QLabel("Azimuth:"), 1, 0);
+        grid->addWidget(new QLabel(tr("Azimuth (-180 - 180 degree):")), 1, 0);
         grid->addWidget(azimuth, 1, 1);
         elevation = new QSlider(Qt::Horizontal);
         elevation->setRange(-90, 90);
-        grid->addWidget(new QLabel("Elevation:"), 2, 0);
+        grid->addWidget(new QLabel(tr("Elevation (-90 - 90 degree)")), 2, 0);
         grid->addWidget(elevation, 2, 1);
         distance = new QSlider(Qt::Horizontal);
         distance->setRange(0, 10);
-        grid->addWidget(new QLabel("Distance:"), 3, 0);
+        grid->addWidget(new QLabel(tr("Distance (0 - 10 meter):")), 3, 0);
         grid->addWidget(distance, 3, 1);
         occlusion = new QSlider(Qt::Horizontal);
-        occlusion->setRange(0, 1000);
-        grid->addWidget(new QLabel("Occlusion:"), 4, 0);
+        occlusion->setRange(0, 10);
+        grid->addWidget(new QLabel(tr("Occlusion (0 - 10):")), 4, 0);
         grid->addWidget(occlusion, 4, 1);
 
+        roomDimension = new QSlider(Qt::Horizontal);
+        roomDimension->setRange(0, 100);
+        roomDimension->setValue(5);
+        grid->addWidget(new QLabel(tr("Room dimension (0 - 100 meter):")), 5, 0);
+        grid->addWidget(roomDimension, 5, 1);
+
+        reverbGain = new QSlider(Qt::Horizontal);
+        reverbGain->setRange(0, 500);
+        reverbGain->setValue(100);
+        grid->addWidget(new QLabel(tr("Reverb gain (0-5):")), 6, 0);
+        grid->addWidget(reverbGain, 6, 1);
+
+        reflectionGain = new QSlider(Qt::Horizontal);
+        reflectionGain->setRange(0, 500);
+        reflectionGain->setValue(100);
+        grid->addWidget(new QLabel(tr("Reflection gain (0-5):")), 7, 0);
+        grid->addWidget(reflectionGain, 7, 1);
+
         useHeadphone = new QCheckBox(tr("Use headphone spatialization"));
-        grid->addWidget(useHeadphone, 5, 1, 1, 2);
+        grid->addWidget(useHeadphone, 8, 1, 1, 2);
+
+        connect(fileEdit, &QLineEdit::textChanged, this, &AudioWidget::fileChanged);
+        connect(fileDialogButton, &QPushButton::clicked, this, &AudioWidget::openFileDialog);
 
         connect(azimuth, &QSlider::valueChanged, this, &AudioWidget::newPosition);
         connect(elevation, &QSlider::valueChanged, this, &AudioWidget::newPosition);
         connect(distance, &QSlider::valueChanged, this, &AudioWidget::newPosition);
         connect(occlusion, &QSlider::valueChanged, this, &AudioWidget::newOcclusion);
+
+        connect(roomDimension, &QSlider::valueChanged, this, &AudioWidget::updateRoom);
+        connect(reverbGain, &QSlider::valueChanged, this, &AudioWidget::updateRoom);
+        connect(reflectionGain, &QSlider::valueChanged, this, &AudioWidget::updateRoom);
+
         connect(useHeadphone, &QCheckBox::stateChanged, this, &AudioWidget::useHeadphoneChanged);
-        connect(fileEdit, &QLineEdit::textChanged, this, &AudioWidget::fileChanged);
-        connect(fileDialogButton, &QPushButton::clicked, this, &AudioWidget::openFileDialog);
+
+        room = new QSpatialAudioRoom(&engine);
+        room->setDimensions(QVector3D(5, 5, 5));
+        room->setWall(QSpatialAudioRoom::BackWall, QSpatialAudioRoom::Material::BrickBare);
+        room->setWall(QSpatialAudioRoom::FrontWall, QSpatialAudioRoom::Material::BrickBare);
+        room->setWall(QSpatialAudioRoom::LeftWall, QSpatialAudioRoom::Material::BrickBare);
+        room->setWall(QSpatialAudioRoom::RightWall, QSpatialAudioRoom::Material::BrickBare);
+        room->setWall(QSpatialAudioRoom::Floor, QSpatialAudioRoom::Material::Marble);
+        room->setWall(QSpatialAudioRoom::Ceiling, QSpatialAudioRoom::Material::WoodCeiling);
+        room->setReverbGain(1);
+        room->setReflectionGain(1);
 
         listener = new QSpatialAudioListener(&engine);
         listener->setPosition({});
@@ -133,6 +168,13 @@ private slots:
         auto file = QFileDialog::getOpenFileName(this);
         fileEdit->setText(file);
     }
+    void updateRoom()
+    {
+        float d = roomDimension->value();
+        room->setDimensions(QVector3D(d, d, 4));
+        room->setReflectionGain(float(reflectionGain->value())/100);
+        room->setReverbGain(float(reverbGain->value())/100);
+    }
 
     QLineEdit *fileEdit = nullptr;
     QPushButton *fileDialogButton = nullptr;
@@ -140,11 +182,15 @@ private slots:
     QSlider *elevation = nullptr;
     QSlider *distance = nullptr;
     QSlider *occlusion = nullptr;
+    QSlider *roomDimension = nullptr;
+    QSlider *reverbGain = nullptr;
+    QSlider *reflectionGain = nullptr;
     QCheckBox *useHeadphone = nullptr;
 
     QSpatialAudioEngine engine;
     QSpatialAudioListener *listener = nullptr;
     QSpatialAudioSoundSource *sound = nullptr;
+    QSpatialAudioRoom *room = nullptr;
 };
 
 int main(int argc, char **argv)