Bugfix/issue 1802 Unregister apps when audio output becomes unavailable (#1827)

* Add audio output status callback set to SdlSession

Add to Andoroid’s SdlSession since it is only an Android feature

* Add callback for audio output status in LCM

Closes LCM if audio outpput is required and no longer available. Properly clears apps off IVI.

* Add helloSDL buildFlavor for audio output required

2 files changed, 30 insertions, 3 deletions

diff --git a/android/sdl_android/src/main/java/com/smartdevicelink/managers/lifecycle/LifecycleManager.java b/android/sdl_android/src/main/java/com/smartdevicelink/managers/lifecycle/LifecycleManager.java
index bfe73c19f..ae8ba7b23 100644
--- a/android/sdl_android/src/main/java/com/smartdevicelink/managers/lifecycle/LifecycleManager.java
+++ b/android/sdl_android/src/main/java/com/smartdevicelink/managers/lifecycle/LifecycleManager.java
@@ -55,6 +55,7 @@ import com.smartdevicelink.transport.enums.TransportType;
 import com.smartdevicelink.transport.utl.TransportRecord;
 import com.smartdevicelink.util.AndroidTools;
 import com.smartdevicelink.util.DebugTool;
+import com.smartdevicelink.util.MediaStreamingStatus;
 
 import java.lang.ref.WeakReference;
 import java.util.List;
@@ -80,7 +81,17 @@ public class LifecycleManager extends BaseLifecycleManager {
 
         synchronized (SESSION_LOCK) {
             if (_transportConfig != null && _transportConfig.getTransportType().equals(TransportType.MULTIPLEX)) {
-                this.session = new SdlSession(sdlSessionListener, (MultiplexTransportConfig) _transportConfig);
+                MultiplexTransportConfig multiplexTransportConfig = (MultiplexTransportConfig) _transportConfig;
+                this.session = new SdlSession(sdlSessionListener, multiplexTransportConfig);
+                if (multiplexTransportConfig.requiresAudioSupport()) {
+                    this.session.setMediaStreamingStatusCallback(new MediaStreamingStatus.Callback() {
+                        @Override
+                        public void onAudioNoLongerAvailable() {
+                            clean(true);
+                            onClose("Audio output no longer available", null, SdlDisconnectedReason.DEFAULT);
+                        }
+                    });
+                }
             } else if (_transportConfig != null && _transportConfig.getTransportType().equals(TransportType.TCP)) {
                 this.session = new SdlSession(sdlSessionListener, (TCPTransportConfig) _transportConfig);
             } else {
diff --git a/android/sdl_android/src/main/java/com/smartdevicelink/session/SdlSession.java b/android/sdl_android/src/main/java/com/smartdevicelink/session/SdlSession.java
index 74701c867..633904bb0 100644
--- a/android/sdl_android/src/main/java/com/smartdevicelink/session/SdlSession.java
+++ b/android/sdl_android/src/main/java/com/smartdevicelink/session/SdlSession.java
@@ -62,6 +62,7 @@ public class SdlSession extends BaseSdlSession {
     WeakReference<Context> contextWeakReference;
     MediaStreamingStatus mediaStreamingStatus;
     boolean requiresAudioSupport = false;
+    MediaStreamingStatus.Callback mediaStreamingStatusCallback;
 
     public SdlSession(ISdlSessionListener listener, MultiplexTransportConfig config) {
         super(listener, config);
@@ -79,6 +80,17 @@ public class SdlSession extends BaseSdlSession {
         this.sessionListener = listener;
     }
 
+    /**
+     * Sets a callback that is triggered when there are no audio output methods available. If this
+     * is set then the caller of this method will be responsible for shutting the session down.
+     *
+     * @param mediaStreamingStatusCallback the callback that will be triggered when audio output is
+     *                                     no longer available.
+     */
+    public void setMediaStreamingStatusCallback(MediaStreamingStatus.Callback mediaStreamingStatusCallback) {
+        this.mediaStreamingStatusCallback = mediaStreamingStatusCallback;
+    }
+
     protected SdlProtocolBase getSdlProtocolImplementation() {
         if (transportConfig instanceof MultiplexTransportConfig) {
             return new SdlProtocol(this, (MultiplexTransportConfig) transportConfig);
@@ -94,8 +106,12 @@ public class SdlSession extends BaseSdlSession {
             mediaStreamingStatus = new MediaStreamingStatus(contextWeakReference.get(), new MediaStreamingStatus.Callback() {
                 @Override
                 public void onAudioNoLongerAvailable() {
-                    close();
-                    shutdown("Audio output no longer available");
+                    if (mediaStreamingStatusCallback != null) {
+                        mediaStreamingStatusCallback.onAudioNoLongerAvailable();
+                    } else {
+                        close();
+                        shutdown("Audio output no longer available");
+                    }
                 }
             });
         }