[PATCH 7/7] core: Make grl_media_source_notify_change_stop() compulsory

["Juan A. Suarez Romero" <jasuarez igalia com>]

Plugins must reimplement grl_media_source_notify_change_stop().

Signed-off-by: Juan A. Suarez Romero <jasuarez igalia com>
---
 src/grl-media-source.c |   16 +++++-----------
 1 files changed, 5 insertions(+), 11 deletions(-)

diff --git a/src/grl-media-source.c b/src/grl-media-source.c
index b7368f1..3077f60 100644
--- a/src/grl-media-source.c
+++ b/src/grl-media-source.c
@@ -2043,7 +2043,8 @@ grl_media_source_supported_operations (GrlMetadataSource *metadata_source)
   if (media_source_class->test_media_from_uri &&
       media_source_class->media_from_uri)
     caps |= GRL_OP_MEDIA_FROM_URI;
-  if (media_source_class->notify_change_start)
+  if (media_source_class->notify_change_start &&
+      media_source_class->notify_change_stop)
     caps |= GRL_OP_NOTIFY_CHANGE;
 
   return caps;
@@ -2569,17 +2570,10 @@ grl_media_source_notify_change_start (GrlMediaSource *source,
 void grl_media_source_notify_change_stop (GrlMediaSource *source)
 {
   g_return_if_fail (GRL_IS_MEDIA_SOURCE (source));
+  g_return_if_fail (grl_media_source_supported_operations (GRL_METADATA_SOURCE (source)) &
+                    GRL_OP_NOTIFY_CHANGE);
 
-  GrlMediaSourceClass *source_class = GRL_MEDIA_SOURCE_GET_CLASS (source);
-
-  if (source_class->notify_change_stop) {
-    source_class->notify_change_stop (source);
-  } else {
-    /* Just stop signal emission */
-    g_signal_stop_emission (source,
-                            registry_signals[SIG_CONTENT_CHANGED],
-                            0);
-  }
+  return GRL_MEDIA_SOURCE_GET_CLASS (source)->notify_change_stop (source);
 }
 
 /**
-- 
1.7.3.5