gst, sys: remove GstImplementsInterface usage

gst/encoding/gstencodebin.c

@@ -1008,8 +1008,7 @@ _create_stream_group (GstEncodeBin * ebin, GstEncodingProfile * sprof,
    * If we have no muxer or
    * if the muxer isn't a formatter and doesn't implement the tagsetter interface
    */
-  if (!ebin->muxer
+  if (!ebin->muxer || (!GST_IS_TAG_SETTER (ebin->muxer)
-      || (!gst_element_implements_interface (ebin->muxer, GST_TYPE_TAG_SETTER)
           || !_has_class (ebin->muxer, "Formatter"))) {
     sgroup->formatter = _get_formatter (ebin, sprof);
     if (sgroup->formatter) {

gst/volume/gstvolume.c

@@ -139,13 +139,11 @@ enum
 	"depth = (int) 32, " \
 	"signed = (bool) TRUE"
 
-static void gst_volume_interface_init (GstImplementsInterfaceClass * klass);
 static void gst_volume_mixer_init (GstMixerClass * iface);
 
 #define gst_volume_parent_class parent_class
 G_DEFINE_TYPE_WITH_CODE (GstVolume, gst_volume,
-    GST_TYPE_AUDIO_FILTER, G_IMPLEMENT_INTERFACE (GST_TYPE_IMPLEMENTS_INTERFACE,
+    GST_TYPE_AUDIO_FILTER,
-        gst_volume_interface_init);
     G_IMPLEMENT_INTERFACE (GST_TYPE_MIXER, gst_volume_mixer_init);
     G_IMPLEMENT_INTERFACE (GST_TYPE_STREAM_VOLUME, NULL));
 
@@ -320,18 +318,6 @@ volume_update_volume (GstVolume * self, gfloat volume, gboolean mute)
 
 /* Mixer interface */
 
-static gboolean
-gst_volume_interface_supported (GstImplementsInterface * iface, GType type)
-{
-  return (type == GST_TYPE_MIXER || type == GST_TYPE_STREAM_VOLUME);
-}
-
-static void
-gst_volume_interface_init (GstImplementsInterfaceClass * klass)
-{
-  klass->supported = gst_volume_interface_supported;
-}
-
 static const GList *
 gst_volume_list_tracks (GstMixer * mixer)
 {

sys/ximage/ximagesink.c

@@ -168,13 +168,10 @@ enum
 /*          Object typing & Creation           */
 /*                                             */
 /* =========================================== */
-static void gst_ximagesink_interface_init (GstImplementsInterfaceClass * klass);
 static void gst_ximagesink_navigation_init (GstNavigationInterface * klass);
 static void gst_ximagesink_xoverlay_init (GstXOverlayClass * klass);
 #define gst_ximagesink_parent_class parent_class
 G_DEFINE_TYPE_WITH_CODE (GstXImageSink, gst_ximagesink, GST_TYPE_VIDEO_SINK,
-    G_IMPLEMENT_INTERFACE (GST_TYPE_IMPLEMENTS_INTERFACE,
-        gst_ximagesink_interface_init);
     G_IMPLEMENT_INTERFACE (GST_TYPE_NAVIGATION, gst_ximagesink_navigation_init);
     G_IMPLEMENT_INTERFACE (GST_TYPE_X_OVERLAY, gst_ximagesink_xoverlay_init));
 
@@ -1519,22 +1516,6 @@ config_failed:
 }
 
 /* Interfaces stuff */
-
-static gboolean
-gst_ximagesink_interface_supported (GstImplementsInterface * iface, GType type)
-{
-  if (type == GST_TYPE_NAVIGATION || type == GST_TYPE_X_OVERLAY)
-    return TRUE;
-  else
-    return FALSE;
-}
-
-static void
-gst_ximagesink_interface_init (GstImplementsInterfaceClass * klass)
-{
-  klass->supported = gst_ximagesink_interface_supported;
-}
-
 static void
 gst_ximagesink_navigation_send_event (GstNavigation * navigation,
     GstStructure * structure)

sys/xvimage/xvimagesink.c

@@ -193,8 +193,6 @@ enum
 /*          Object typing & Creation           */
 /*                                             */
 /* =========================================== */
-static void gst_xvimagesink_interface_init (GstImplementsInterfaceClass *
-    klass);
 static void gst_xvimagesink_navigation_init (GstNavigationInterface * iface);
 static void gst_xvimagesink_xoverlay_init (GstXOverlayClass * iface);
 static void gst_xvimagesink_colorbalance_init (GstColorBalanceClass * iface);
@@ -203,8 +201,6 @@ gst_xvimagesink_property_probe_interface_init (GstPropertyProbeInterface *
     iface);
 #define gst_xvimagesink_parent_class parent_class
 G_DEFINE_TYPE_WITH_CODE (GstXvImageSink, gst_xvimagesink, GST_TYPE_VIDEO_SINK,
-    G_IMPLEMENT_INTERFACE (GST_TYPE_IMPLEMENTS_INTERFACE,
-        gst_xvimagesink_interface_init);
     G_IMPLEMENT_INTERFACE (GST_TYPE_NAVIGATION,
         gst_xvimagesink_navigation_init);
     G_IMPLEMENT_INTERFACE (GST_TYPE_X_OVERLAY, gst_xvimagesink_xoverlay_init);
@@ -2034,23 +2030,6 @@ config_failed:
 }
 
 /* Interfaces stuff */
-
-static gboolean
-gst_xvimagesink_interface_supported (GstImplementsInterface * iface, GType type)
-{
-  if (type == GST_TYPE_NAVIGATION || type == GST_TYPE_X_OVERLAY ||
-      type == GST_TYPE_COLOR_BALANCE || type == GST_TYPE_PROPERTY_PROBE)
-    return TRUE;
-  else
-    return FALSE;
-}
-
-static void
-gst_xvimagesink_interface_init (GstImplementsInterfaceClass * klass)
-{
-  klass->supported = gst_xvimagesink_interface_supported;
-}
-
 static void
 gst_xvimagesink_navigation_send_event (GstNavigation * navigation,
     GstStructure * structure)