New QCameraInfo class.

The class allows to get the list of available cameras on the system as
well as getting some static information about them such as their unique
ID, display name, physical position and sensor orientation.

This makes QCamera::availableDevices() and QCamera::deviceDescription()
obsolete.

This patch contains the API, documentation and auto-tests but not the
actual implementation by each backend (except for retrieving the default
camera device).

[ChangeLog][QtMultimedia] Added new QCameraInfo class
[ChangeLog][QtMultimedia] QCamera: availableDevices() and
deviceDescription() are deprecated, use QCameraInfo instead

Change-Id: I64fd65729ab26a789468979ed5444ee90bb82cd0
Reviewed-by: Christian Stromme <christian.stromme@digia.com>

2 files changed, 19 insertions, 0 deletions

diff --git a/src/plugins/qnx/bbserviceplugin.cpp b/src/plugins/qnx/bbserviceplugin.cpp
index 59be46453..2351e5730 100644
--- a/src/plugins/qnx/bbserviceplugin.cpp
+++ b/src/plugins/qnx/bbserviceplugin.cpp
@@ -74,6 +74,18 @@ QMediaServiceProviderHint::Features BbServicePlugin::supportedFeatures(const QBy
     return QMediaServiceProviderHint::Features();
 }
 
+QByteArray BbServicePlugin::defaultDevice(const QByteArray &service) const
+{
+    if (service == Q_MEDIASERVICE_CAMERA) {
+        if (m_cameraDevices.isEmpty())
+            updateDevices();
+
+        return m_defaultCameraDevice;
+    }
+
+    return QByteArray();
+}
+
 QList<QByteArray> BbServicePlugin::devices(const QByteArray &service) const
 {
     if (service == Q_MEDIASERVICE_CAMERA) {
@@ -102,10 +114,13 @@ QString BbServicePlugin::deviceDescription(const QByteArray &service, const QByt
 
 void BbServicePlugin::updateDevices() const
 {
+    m_defaultCameraDevice.clear();
     BbVideoDeviceSelectorControl::enumerateDevices(&m_cameraDevices, &m_cameraDescriptions);
 
     if (m_cameraDevices.isEmpty()) {
         qWarning() << "No camera devices found";
+    } else {
+        m_defaultCameraDevice = m_cameraDevices.first();
     }
 }
 
diff --git a/src/plugins/qnx/bbserviceplugin.h b/src/plugins/qnx/bbserviceplugin.h
index 62fc4a0df..45ea4cc6f 100644
--- a/src/plugins/qnx/bbserviceplugin.h
+++ b/src/plugins/qnx/bbserviceplugin.h
@@ -48,10 +48,12 @@ QT_BEGIN_NAMESPACE
 class BbServicePlugin
     : public QMediaServiceProviderPlugin,
       public QMediaServiceSupportedDevicesInterface,
+      public QMediaServiceDefaultDeviceInterface,
       public QMediaServiceFeaturesInterface
 {
     Q_OBJECT
     Q_INTERFACES(QMediaServiceSupportedDevicesInterface)
+    Q_INTERFACES(QMediaServiceDefaultDeviceInterface)
     Q_INTERFACES(QMediaServiceFeaturesInterface)
     Q_PLUGIN_METADATA(IID "org.qt-project.qt.mediaserviceproviderfactory/5.0" FILE "blackberry_mediaservice.json")
 public:
@@ -61,6 +63,7 @@ public:
     void release(QMediaService *service) Q_DECL_OVERRIDE;
     QMediaServiceProviderHint::Features supportedFeatures(const QByteArray &service) const Q_DECL_OVERRIDE;
 
+    QByteArray defaultDevice(const QByteArray &service) const Q_DECL_OVERRIDE;
     QList<QByteArray> devices(const QByteArray &service) const Q_DECL_OVERRIDE;
     QString deviceDescription(const QByteArray &service, const QByteArray &device) Q_DECL_OVERRIDE;
     QVariant deviceProperty(const QByteArray &service, const QByteArray &device, const QByteArray &property) Q_DECL_OVERRIDE;
@@ -68,6 +71,7 @@ public:
 private:
     void updateDevices() const;
 
+    mutable QByteArray m_defaultCameraDevice;
     mutable QList<QByteArray> m_cameraDevices;
     mutable QStringList m_cameraDescriptions;
 };