media: binding: improve media removal support

Use glib's inotify support instead of UDisks to get the actual
path of an unmounted drive. This in turn allows removal of items
on the playlist respective to only that device.

Bug-AGL: SPEC-610 SPEC-757
Change-Id: Iaabb004934367bf1e60dab3f9f3365c2eb0b517d
Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>

1 files changed, 32 insertions, 37 deletions

diff --git a/mediaplayer-manager.c b/mediaplayer-manager.c
index d5624e4..c14f0a4 100644
--- a/mediaplayer-manager.c
+++ b/mediaplayer-manager.c
@@ -87,17 +87,11 @@ GList* media_lightmediascanner_scan(void)
 {
     sqlite3 *conn;
     sqlite3_stmt *res;
-    GList *list;
+    GList *list = NULL;
     const char *tail;
     const gchar *db_path;
     int ret = 0;
 
-    list = MediaPlayerManage.list;
-
-    // Returned cached result
-    if (list)
-        return list;
-
     db_path = scanner1_get_data_base_path(MediaPlayerManage.lms_proxy);
 
     ret = sqlite3_open(db_path, &conn);
@@ -123,8 +117,6 @@ GList* media_lightmediascanner_scan(void)
         list = g_list_append(list, g_strdup_printf("file://%s", path));
     }
 
-    MediaPlayerManage.list = list;
-
     return list;
 }
 
@@ -170,20 +162,6 @@ on_interface_proxy_properties_changed (GDBusProxy *proxy,
     ListUnlock();
 }
 
-static void
-on_device_removed (GDBusProxy *proxy, gpointer user_data)
-{
-    ListLock();
-
-    g_list_free(MediaPlayerManage.list);
-    MediaPlayerManage.list = NULL;
-
-    if (g_RegisterCallback.binding_device_removed)
-        g_RegisterCallback.binding_device_removed((const char *) user_data);
-
-    ListUnlock();
-}
-
 static int MediaPlayerDBusInit(void)
 {
     GError *error = NULL;
@@ -197,25 +175,11 @@ static int MediaPlayerDBusInit(void)
         return -1;
     }
 
-    MediaPlayerManage.udisks_proxy = org_freedesktop_udisks_proxy_new_for_bus_sync(
-        G_BUS_TYPE_SYSTEM, G_DBUS_PROXY_FLAGS_NONE, UDISKS_SERVICE,
-        UDISKS_PATH, NULL, &error);
-
-    if (MediaPlayerManage.udisks_proxy == NULL) {
-        LOGE("Create UDisks Proxy failed\n");
-        return -1;
-    }
-
     g_signal_connect (MediaPlayerManage.lms_proxy,
                       "g-properties-changed",
                       G_CALLBACK (on_interface_proxy_properties_changed),
                       NULL);
 
-    g_signal_connect (MediaPlayerManage.udisks_proxy,
-                      "device-removed",
-                      G_CALLBACK (on_device_removed),
-                      NULL);
-
     return 0;
 }
 
@@ -235,6 +199,28 @@ static void *media_event_loop_thread(void *unused)
     return NULL;
 }
 
+void
+unmount_cb (GFileMonitor      *mon,
+            GFile             *file,
+            GFile             *other_file,
+            GFileMonitorEvent  event,
+            gpointer           udata)
+{
+    gchar *path = g_file_get_path(file);
+    gchar *uri = g_strconcat("file://", path, NULL);
+    g_free(path);
+
+    ListLock();
+
+    if (g_RegisterCallback.binding_device_removed &&
+        event == G_FILE_MONITOR_EVENT_DELETED) {
+            g_RegisterCallback.binding_device_removed(uri);
+    }
+
+    ListUnlock();
+    g_free(uri);
+}
+
 /*
  * Create MediaPlayer Manager Thread
  * Note: mediaplayer-api should do MediaPlayerManagerInit() before any other 
@@ -243,9 +229,18 @@ static void *media_event_loop_thread(void *unused)
  */
 int MediaPlayerManagerInit() {
     pthread_t thread_id;
+    GFile *file;
+    GFileMonitor *mon;
 
     g_mutex_init(&(MediaPlayerManage.m));
 
+    file = g_file_new_for_path("/media");
+    g_assert(file != NULL);
+
+    mon = g_file_monitor (file, G_FILE_MONITOR_NONE, NULL, NULL);
+    g_assert(mon != NULL);
+    g_signal_connect (mon, "changed", G_CALLBACK(unmount_cb), NULL);
+
     pthread_create(&thread_id, NULL, media_event_loop_thread, NULL);
 
     return 0;