Hi Gilles,

I have all the switch..case to print the received event.  But none of them got received except 
'MME_EVENT_SHUTDOWN_COMPLETED' . 

Like below code,

switch (mme_event->type)
	    {
		    /// ***** CLASS_METADATA *****
            case MME_EVENT_NONE:  // 0 - Indicates that no 'single' type events are in the clients queue.
			{
				//  MM_INFO("Ply status thread received MME_EVENT_NONE event.");
                break;  // Queue is flushed
			}
			case MME_EVENT_METADATA_INFO: // 53 - mme_event_metadata_info_t
			{
				// mme_event_metadata_info_t . EOK is the data valid.
				MM_INFO("Metadata received MME_EVENT_METADATA_INFO event");


				break;
			}
			case MME_EVENT_METADATA_IMAGE:  // 54 - load an image from metadata is issued via the
											// mme_metadata_image_load() API function call a metadata image request id is returned to the client.
			{
				MM_INFO("Metadata received MME_EVENT_METADATA_IMAGE event");

				//1. If an image is available and required, call mme_metadata_image_load() to load the image into the image cache.
				//2. Call mme_metadata_free_session() to close the metadata session and free the system resources it was using.

				if (pWorkerMetadata->m_mmestatus.sessionID)
				{
					//End a metadata session
					rc = mme_metadata_free_session(pWorkerMetadata->m_mmestatus.sessionID);
				}

				break;
			}
			/// ***** CLASS_GENERAL *****
			case MME_EVENT_USERMSG: // 7 - An MME user event.
			{
				MM_INFO("General - received MME_EVENT_USERMSG event.");
				break;
			}
			case MME_EVENT_SHUTDOWN: // 15 - mme can be requested to shutdown by any client.
			{
				MM_INFO("General - received MME_EVENT_SHUTDOWN event.");
				break;
			}
			case MME_EVENT_SHUTDOWN_COMPLETED: // 16 - The shutdown process is complete.  Playback and sync have stopped.
			{
				MM_INFO("General - received MME_EVENT_SHUTDOWN_COMPLETED event.");

				//  Start a database backup
				qdb_backup(pWorkerMetadata->m_mmestatus.hQDB, QDB_ATTACH_DEFAULT);

				//qdb_Backup
				break;
			}
			case MME_EVENT_BUFFER_TOO_SMALL:  // 55 - A client when the event buffer on the client side is
						// too small to fetch any events from the MME.
			{
				MM_INFO("General - received MME_EVENT_BUFFER_TOO_SMALL event.");
				break;
			}
			case MME_EVENT_DEFAULT_LANGUAGE: // 59 - default language has been set
			{
				MM_INFO("General - received MME_EVENT_DEFAULT_LANGUAGE event.");
				break;
			}
			default:
			{
				printf(" Metadata received unhandled event(%d)\n", mme_event->type);
                break;
			}

		} //end-switch


Regards,
Vadivel