Dynamically remove videoscale from the pipelinepadblock

Remove an element (videoscale) from the pipeline without stopping nor
pausing it. GStreamer is just great! glimagesink seems to suck a little
bit here, I cannot manage to make it work after unblocking the pipeline
without the little trick to destroy each and recreate each sink from
scratch.

1 files changed, 27 insertions, 12 deletions

diff --git a/src/cheese-stage.c b/src/cheese-stage.c
index 61f1457..e178ffa 100644
--- a/src/cheese-stage.c
+++ b/src/cheese-stage.c
@@ -38,6 +38,7 @@ GstPipeline *pipeline;
 GstBus *bus;
 
 GstElement *srcbin;
+GstElement *csp;
 GstElement *scalebin;
 GstElement *tee;
 GstElement *fx[N_ACTORS];
@@ -182,19 +183,32 @@ on_blocked (GstPad *pad, gboolean blocked, gpointer data)
   gint i;
   GstPad *srcpad = gst_element_get_static_pad (scalebin, "src");
 
-  gst_element_unlink (srcbin, scalebin);
+  gst_element_unlink (srcbin, csp);
+  gst_element_unlink (csp, scalebin);
   gst_element_unlink (scalebin, tee);
+
   for (i = 0; i < N_ACTORS; i++) {
-    gst_element_unlink_many (tee, queue[i], fx[i], sink[i], NULL);
+    ClutterActor *actor = cheese_grid_get_actor_for_sink (layout, sink[i]);
+    gst_element_unlink (fx[i], sink[i]);
+    gst_bin_remove (GST_BIN (pipeline), sink[i]);
+    sink[i] = gst_element_factory_make ("glimagesink", NULL);
+    g_object_set (G_OBJECT (actor), "sink", sink[i], NULL);
+    gst_bin_add (GST_BIN (pipeline), sink[i]);
+    gst_element_link (fx[i], sink[i]);
   }
 
-  ClutterActor *actor = cheese_grid_get_actor_for_sink (layout, sink[0]);
-  gst_bin_remove_many (GST_BIN (pipeline), sink[0],NULL);
-  sink[0] = gst_element_factory_make ("glimagesink", NULL);
-  gst_bin_add_many (GST_BIN (pipeline), sink[0],NULL);
-  g_object_set (G_OBJECT (actor), "sink", sink[0], NULL);
+  gst_element_link_filtered (srcbin, csp, gst_caps_new_simple ("video/x-raw-rgb", NULL));
+  gst_element_link_many (csp, tee, NULL);
+
+
+//  ClutterActor *actor = cheese_grid_get_actor_for_sink (layout, sink[0]);
+//  gst_bin_remove_many (GST_BIN (pipeline), sink[ NULL);
+//  sink[0] = gst_element_factory_make ("glimagesink", NULL);
+//  fx[0] = gst_element_factory_make ("quarktv", NULL);
+//  gst_bin_add_many (GST_BIN (pipeline), sink[0], fx[0], NULL);
+//  g_object_set (G_OBJECT (actor), "sink", sink[0], NULL);
   
-  gst_element_link_many (srcbin, tee, queue[0], fx[0], sink[0], NULL);
+//  if (!gst_element_link_many (srcbin, csp, scale, sink[0], NULL)) g_error ("AAAA");
   
 
 /*  for (i = 0; i < N_ACTORS; i++) {
@@ -315,13 +329,14 @@ main (int argc, char *argv[])
 
   srcbin = gst_parse_bin_from_description (desc, TRUE, NULL);
   g_free (desc);
-  desc = g_strdup_printf ("videoscale ! video/x-raw-rgb, width=%d, height=%d ! ffmpegcolorspace ! identity", W, H);
+  desc = g_strdup_printf ("videoscale ! video/x-raw-rgb, width=%d, height=%d ! identity", W, H);
   scalebin = gst_parse_bin_from_description (desc, TRUE, NULL);
+  csp = gst_element_factory_make ("ffmpegcolorspace", NULL);
 
   tee = gst_element_factory_make ("tee", NULL);
   id = gst_element_factory_make ("identity", NULL);
 
-  gst_bin_add_many (GST_BIN (pipeline), srcbin, scalebin, tee, NULL);
+  gst_bin_add_many (GST_BIN (pipeline), srcbin, csp, scalebin, tee, NULL);
   
   fx[0] = gst_parse_bin_from_description ("identity", TRUE, NULL);
 //  fx[1] = gst_parse_bin_from_description ("ffmpegcolorspace ! videobalance saturation=0 ! ffmpegcolorspace", TRUE, NULL);
@@ -356,8 +371,8 @@ main (int argc, char *argv[])
 
 //    g_signal_connect (actor[i], "enter-event", G_CALLBACK (on_enter_animate), NULL);
 //    g_signal_connect (actor[i], "leave-event", G_CALLBACK (on_leave_animate), NULL);
-
-  gst_element_link_many (srcbin, scalebin, tee, NULL);
+  gst_element_link_filtered (srcbin, csp, gst_caps_new_simple ("video/x-raw-rgb", NULL));
+  gst_element_link_many (csp, scalebin, tee, NULL);
 
   for (i = 0; i < N_ACTORS; i++) {
     ok |= gst_element_link_many (tee, queue[i], fx[i], sink[i], NULL);