[datapipe] Add datapipe for requesting ngfd event playback

To allow all parts of mce code base to request playing of ngfd events,
add a datapipe for this purpose and connect it to already existing
logic in the powerkey module.

Signed-off-by: Simo Piiroinen <simo.piiroinen@jollamobile.com>

datapipe.c

@@ -205,6 +205,9 @@ datapipe_struct usbmoded_service_state_pipe;
 /** ngfd availability; read only */
 datapipe_struct ngfd_service_state_pipe;
 
+/** Request ngfd event playing */
+datapipe_struct ngfd_event_request_pipe;
+
 /** dsme availability; read only */
 datapipe_struct dsme_service_state_pipe;
 
@@ -855,6 +858,8 @@ void mce_datapipe_init(void)
 		      0, GINT_TO_POINTER(SERVICE_STATE_UNDEF));
 	datapipe_init(&ngfd_service_state_pipe, READ_ONLY, DONT_FREE_CACHE,
 		      0, GINT_TO_POINTER(SERVICE_STATE_UNDEF));
+	datapipe_init(&ngfd_event_request_pipe, READ_ONLY, DONT_FREE_CACHE,
+		      0, NULL);
 
 	datapipe_init(&dsme_service_state_pipe, READ_ONLY, DONT_FREE_CACHE,
 		      0, GINT_TO_POINTER(SERVICE_STATE_UNDEF));
@@ -951,6 +956,7 @@ void mce_datapipe_quit(void)
 	datapipe_free(&devicelock_service_state_pipe);
 	datapipe_free(&usbmoded_service_state_pipe);
 	datapipe_free(&ngfd_service_state_pipe);
+	datapipe_free(&ngfd_event_request_pipe);
 	datapipe_free(&dsme_service_state_pipe);
 	datapipe_free(&bluez_service_state_pipe);
 	datapipe_free(&packagekit_locked_pipe);

datapipe.h

@@ -143,6 +143,7 @@ extern datapipe_struct lipstick_service_state_pipe;
 extern datapipe_struct devicelock_service_state_pipe;
 extern datapipe_struct usbmoded_service_state_pipe;
 extern datapipe_struct ngfd_service_state_pipe;
+extern datapipe_struct ngfd_event_request_pipe;
 extern datapipe_struct dsme_service_state_pipe;
 extern datapipe_struct bluez_service_state_pipe;
 extern datapipe_struct packagekit_locked_pipe;

powerkey.c

@@ -3097,6 +3097,17 @@ static void pwrkey_datapipe_enroll_in_progress_cb(gconstpointer data)
     return;
 }
 
+/** Handle NGFD play event requests
+ *
+ * @param data Requested event name (as void pointer)
+ */
+static void fba_datapipe_ngfd_event_request_cb(gconstpointer data)
+{
+    const char *event = data;
+    mce_log(LL_DEBUG, "ngfd event request = %s", event);
+    xngf_play_event(event);
+}
+
 /** Array of datapipe handlers */
 static datapipe_handler_t pwrkey_datapipe_handlers[] =
 {
@@ -3146,6 +3157,10 @@ static datapipe_handler_t pwrkey_datapipe_handlers[] =
         .datapipe  = &enroll_in_progress_pipe,
         .output_cb = pwrkey_datapipe_enroll_in_progress_cb,
     },
+    {
+        .datapipe  = &ngfd_event_request_pipe,
+        .output_cb = fba_datapipe_ngfd_event_request_cb,
+    },
 
     // sentinel
     {