AudioManagerPoC: GENIVI Alliance Audio Manager proof-of-concept

The Audio Manager Proof of Concept (AM PoC) is an application that uses the
GENIVI AudioManager capabilities to demonstrate how audio sources are managed
based on  mixing rules that are defined in the configuration file for
AM Control Plugin "libPluginControlInterface.conf".

For a details description please consult the "libPluginControlInterface.conf",
"libPluginRoutingInterfacePulse.conf" and AudioManager documentation.

This AudioManager PoC is based on AM ver 3.0 and Qt 5.
It will be a simple application that will demonstrate a few of the AM
capabilities:
  1. source playing;
  2. volume changing;
  3. source switching based on source priorities;
  4. automatic volume handeling based on source priorities.

Signed-off-by: Adrian Scarlat <adrian.scarlat@windriver.com>
Signed-off-by: Holger Behrens <holger.behrens@windriver.com>

1 files changed, 87 insertions, 0 deletions

diff --git a/AudioManagerPoC/business_logic/src/main.cpp b/AudioManagerPoC/business_logic/src/main.cpp
new file mode 100644
index 0000000..3bdd518
--- /dev/null
+++ b/AudioManagerPoC/business_logic/src/main.cpp
@@ -0,0 +1,87 @@
+/**
+ * SPDX license identifier: MPL-2.0
+ *
+ * Copyright (C) 2011-2014, Wind River Systems
+ * Copyright (C) 2014, GENIVI Alliance
+ *
+ * This file is part of GENIVI AudioManager PoC.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License (MPL), v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * For further information see http://www.genivi.org/.
+ *
+ * List of changes:
+ *
+ * 21.09.2014, Adrian Scarlat, First version of the code;
+ *                             Added Copyright and License information;
+ *
+ * 28.11.2014, Adrian Scarlat, Added code to allow only one instance of
+ *                             AM PoC to run; This was achieved by creating
+ *                             a file in /var/run and placing an advisory
+ *                             lock on it, using flock(). When another
+ *                             instance is created, it can't create the advisory
+ *                             lock on the same file since the first instance
+ *                             owns it and it will quit with an appropriate
+ *                             message.
+ */
+
+#include <QApplication>
+#include <QQuickView>
+#include <QQmlContext>
+#include <QDebug>
+#include <QGraphicsObject>
+#include <QTimer>
+#include <QQmlEngine>
+#include <QQuickItem>
+
+#include <sys/file.h>
+#include <errno.h>
+
+#include "business_logic/include/qmlbuttoneventsreceiver.h"
+#include "business_logic/include/volumechart.h"
+#include "business_logic/include/audioManagerInterface.h"
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+    int pid_file = open("/var/run/AudioManager_PoC.pid", O_CREAT | O_RDWR, 0666);
+    if(pid_file != -1)
+    {
+        int rc = flock(pid_file, LOCK_EX | LOCK_NB);
+        if(rc)
+        {
+            if(EWOULDBLOCK == errno)
+            {
+                qDebug() << "Only one instance of AudioManager_PoC is allowed. Quitting!";
+                return 0;
+            }
+        }
+        else
+        {
+            QQuickView view;
+            QMLButtonEventsReceiver rec(&view);
+            view.rootContext()->setContextProperty("QMLButtonEventsReceiver", &rec);
+            view.engine()->addImageProvider(QLatin1String("volumes"), new volumechart());
+            view.setSource(QUrl("qrc:/presentation_layer/main.qml"));
+            view.showMaximized();
+
+            qDebug() << "Show maximized";
+
+            QTimer  *timer = new QTimer(&rec);
+            QObject::connect(timer, SIGNAL(timeout()), &rec, SLOT(slotRefreshInfo()));
+            timer->start(500);
+
+            QObject *sliderVolume = view.rootObject()->findChild<QObject*>("sliderVolume");
+            sliderVolume->setProperty("value", 100.0);
+
+            return app.exec();
+        }
+    }
+    else
+    {
+        qDebug() << "Couldn't create /var/run/AudioManager_PoC.pid file.";
+        return 0;
+    }
+}