[ekiga/ds-clutter] ClutterGst: Added support to set/unset clutter textures on the fly.

[Damien Sandras <dsandras src gnome org>]

commit 9f849ea31f5b24772247dc78bbea7415cdeeb453
Author: Damien Sandras <dsandras beip be>
Date:   Wed Jan 8 21:50:20 2014 +0100

    ClutterGst: Added support to set/unset clutter textures on the fly.
    
    This allows setting/unsetting the video texture where to display when we
    need them.

 .../videooutput-manager-clutter-gst.cpp            |   39 ++++++++++++++++++--
 1 files changed, 36 insertions(+), 3 deletions(-)
---
diff --git a/lib/engine/components/clutter-gst-videooutput/videooutput-manager-clutter-gst.cpp 
b/lib/engine/components/clutter-gst-videooutput/videooutput-manager-clutter-gst.cpp
index 22c95e2..3fa6426 100644
--- a/lib/engine/components/clutter-gst-videooutput/videooutput-manager-clutter-gst.cpp
+++ b/lib/engine/components/clutter-gst-videooutput/videooutput-manager-clutter-gst.cpp
@@ -237,19 +237,52 @@ void
 GMVideoOutputManager_clutter_gst::set_display_info (const gpointer _local_video,
                                                     const gpointer _remote_video)
 {
+  GstElement *videosink = NULL;
   PWaitAndSignal m(device_mutex);
 
-  texture[0] = CLUTTER_ACTOR (_local_video);
-  texture[1] = CLUTTER_ACTOR (_remote_video);
+  if (_local_video == NULL) {
+    gst_element_set_state (pipeline[0], GST_STATE_NULL);
+    texture[0] = NULL;
+  }
+  else {
+    texture[0] = CLUTTER_ACTOR (_local_video);
+    if (pipeline[0]) {
+      videosink = gst_bin_get_by_name (GST_BIN (pipeline[0]), "videosink");
+      g_object_set (videosink, "texture", texture[0], NULL);
+    }
+  }
+
+  if (_remote_video == NULL) {
+    gst_element_set_state (pipeline[1], GST_STATE_NULL);
+    texture[1] = NULL;
+  }
+  else {
+    texture[1] = CLUTTER_ACTOR (_remote_video);
+    if (pipeline[1]) {
+      videosink = gst_bin_get_by_name (GST_BIN (pipeline[1]), "videosink");
+      g_object_set (videosink, "texture", texture[1], NULL);
+    }
+  }
 }
 
 
 void
 GMVideoOutputManager_clutter_gst::set_ext_display_info (const gpointer _ext_video)
 {
+  GstElement *videosink = NULL;
   PWaitAndSignal m(device_mutex);
 
-  texture[2] = CLUTTER_ACTOR (_ext_video);
+  if (_ext_video == NULL) {
+    gst_element_set_state (pipeline[2], GST_STATE_NULL);
+    texture[2] = NULL;
+  }
+  else {
+    texture[2] = CLUTTER_ACTOR (_ext_video);
+    if (pipeline[2]) {
+      videosink = gst_bin_get_by_name (GST_BIN (pipeline[2]), "videosink");
+      g_object_set (videosink, "texture", texture[2], NULL);
+    }
+  }
 }