bluetooth: populate data for existing avrcp/a2dp connection

Bluetooth connection could exist before mediaplayer application
is started. This patchset detects that and populates the initial
metadata, and track position + status.

AGL-Bug: SPEC-526
Change-Id: Ia0d60972c8eddd8642add708e9a4529c038e931f
Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>

3 files changed, 95 insertions, 1 deletions

diff --git a/app/dbus.cpp b/app/dbus.cpp
index 4c307a7..0deb4ee 100644
--- a/app/dbus.cpp
+++ b/app/dbus.cpp
@@ -83,6 +83,9 @@ bool DbusService::enableBluetooth()
     if (!system_bus.isConnected())
         return false;
 
+    if (deviceConnected(system_bus))
+        initialBluetoothData(system_bus);
+
     ret = system_bus.connect(QString("org.bluez"), QString("/"), interface, "InterfacesAdded", this, SLOT(newBluetoothDevice(QDBusObjectPath,QVariantMap)));
 
     if (!ret)
@@ -108,6 +111,93 @@ bool DbusService::checkIfPlayer(const QString& path) const
     return false;
 }
 
+bool DbusService::deviceConnected(const QDBusConnection& system_bus)
+{
+    QDBusInterface interface("org.bluez", "/", "org.freedesktop.DBus.ObjectManager", system_bus);
+    QDBusMessage result = interface.call("GetManagedObjects");
+    const QDBusArgument argument = result.arguments().at(0).value<QDBusArgument>();
+    bool ret = false;
+
+    if (argument.currentType() != QDBusArgument::MapType)
+        return false;
+
+    argument.beginMap();
+
+    while (!argument.atEnd()) {
+        QString key;
+
+        argument.beginMapEntry();
+        argument >> key;
+        argument.endMapEntry();
+
+        ret = checkIfPlayer(key);
+
+        if (ret) {
+            newBluetoothDevice(QDBusObjectPath(key), QVariantMap());
+            break;
+        }
+    }
+
+    argument.endMap();
+
+    return ret;
+}
+
+void DbusService::initialBluetoothData(const QDBusConnection& system_bus)
+{
+    QDBusInterface interface("org.bluez", getBluezPath(), "org.freedesktop.DBus.Properties", system_bus);
+
+    QDBusMessage result = interface.call("GetAll", "org.bluez.MediaPlayer1");
+    const QDBusArgument argument = result.arguments().at(0).value<QDBusArgument>();
+    QString status, artist, title;
+    int position = 0, duration = 0;
+
+    if (argument.currentType() != QDBusArgument::MapType)
+        return;
+
+    argument.beginMap();
+
+    while (!argument.atEnd()) {
+        QString key;
+        QVariant value;
+
+        argument.beginMapEntry();
+        argument >> key >> value;
+
+        if (key == "Position") {
+            position = value.toInt();
+        } else if (key == "Status") {
+            status = value.toString();
+        } else if (key == "Track") {
+            const QDBusArgument argument1 = qvariant_cast<QDBusArgument>(value);
+            QString key1;
+            QVariant value1;
+
+            argument1.beginMap();
+
+            while (!argument1.atEnd()) {
+                argument1.beginMapEntry();
+                argument1 >> key1 >> value1;
+                if (key1 == "Artist")
+                    artist = value1.toString();
+                else if (key1 == "Title")
+                    title = value1.toString();
+                else if (key1 == "Duration")
+                    duration = value1.toInt();
+                argument1.endMapEntry();
+            }
+            argument1.endMap();
+        }
+        argument.endMapEntry();
+    }
+    argument.endMap();
+
+    emit processPlaylistHide();
+    emit displayBluetoothMetadata(artist, title, duration);
+    emit updatePlayerStatus(status);
+    emit updatePosition(position);
+}
+
 void DbusService::newBluetoothDevice(const QDBusObjectPath& item, const QVariantMap&)
 {
     QString path = item.path();
diff --git a/app/dbus.h b/app/dbus.h
index b470166..b2cfeb4 100644
--- a/app/dbus.h
+++ b/app/dbus.h
@@ -25,6 +25,7 @@
 #include <QtDBus/QDBusPendingCall>
 #include <QtDBus/QDBusPendingReply>
 #include <QtDBus/QDBusInterface>
+#include <QtDBus/QDBusReply>
 #include <QtDBus/QDBusConnection>
 
 #include "lightmediascanner.h"
@@ -43,6 +44,8 @@ private:
     void setBluezPath(const QString& path);
     QString getBluezPath() const;
     bool checkIfPlayer(const QString& path) const;
+    bool deviceConnected(const QDBusConnection& system_bus);
+    void initialBluetoothData(const QDBusConnection& system_bus);
     QString bluezPath;
 
 signals:
diff --git a/app/main.cpp b/app/main.cpp
index dd84f59..a8c32d7 100644
--- a/app/main.cpp
+++ b/app/main.cpp
@@ -90,6 +90,8 @@ int main(int argc, char *argv[])
 #if defined(HAVE_DBUS)
     DbusService dbus_service;
     context->setContextProperty("dbus", &dbus_service);
+
+    engine.load(QUrl(QStringLiteral("qrc:/MediaPlayer.qml")));
 #if defined(HAVE_LIGHTMEDIASCANNER)
     if (!dbus_service.enableLMS())
        qWarning() << "Cannot run enableLMS";
@@ -97,7 +99,6 @@ int main(int argc, char *argv[])
     if (!dbus_service.enableBluetooth())
        qWarning() << "Cannot run enableBluetooth";
 #endif
-    engine.load(QUrl(QStringLiteral("qrc:/MediaPlayer.qml")));
 
     return app.exec();
 }