fixes event function setting on unconnected pads

Original commit message from CVS:
fixes event function setting on unconnected pads

diff --git a/gst/schedulers/gstoptimalscheduler.c b/gst/schedulers/gstoptimalscheduler.c
index c622f43..6057477 100644 (file)
--- a/gst/schedulers/gstoptimalscheduler.c
+++ b/gst/schedulers/gstoptimalscheduler.c
@@ -1305,6 +1305,7 @@ static void
 get_group (GstElement *element, GstOptSchedulerGroup **group)
 {
   GstOptSchedulerCtx *ctx;
+  GList *pads;
 
   ctx = GST_ELEMENT_SCHED_CONTEXT (element);
   if (ctx) 
@@ -1509,6 +1510,19 @@ gst_opt_scheduler_add_element (GstScheduler *sched, GstElement *element)
   GST_ELEMENT_SCHED_CONTEXT (element) = ctx;
   ctx->flags = GST_OPT_SCHEDULER_CTX_DISABLED;
 
+  /* set event handler on all pads here so events work unconnected too;
+   * in _link, it can be overruled if need be */
+  /* FIXME: we should also do this when new pads on the element are created;
+     but there are no hooks, so we do it again in _link */
+  pads = gst_element_get_pad_list (element);
+  while (pads) {
+    GstPad *pad = GST_PAD (pads->data);
+    pads = g_list_next (pads);
+
+    if (!GST_IS_REAL_PAD (pad)) continue;
+    GST_RPAD_EVENTHANDLER (pad) = GST_RPAD_EVENTFUNC (pad);
+  }
+
   /* loop based elements *always* end up in their own group. It can eventually
    * be merged with another group when a link is made */
   if (element->loopfunc) {
@@ -1679,6 +1693,11 @@ gst_opt_scheduler_pad_link (GstScheduler *sched, GstPad *srcpad, GstPad *sinkpad
         type = GST_OPT_CHAIN_TO_CHAIN;
     }
   }
+ 
+  /* since we can't set event handlers on pad creation after addition, it is
+   * best we set all of them again to the default before linking */
+  GST_RPAD_EVENTHANDLER (srcpad) = GST_RPAD_EVENTFUNC (srcpad);
+  GST_RPAD_EVENTHANDLER (sinkpad) = GST_RPAD_EVENTFUNC (sinkpad);
   
   /* for each link type, perform specific actions */
   switch (type) {
@@ -1694,8 +1713,6 @@ gst_opt_scheduler_pad_link (GstScheduler *sched, GstPad *srcpad, GstPad *sinkpad
         GST_RPAD_CHAINHANDLER (sinkpad) = GST_RPAD_CHAINFUNC (sinkpad);
       else
         GST_RPAD_CHAINHANDLER (sinkpad) = gst_opt_scheduler_chain_wrapper;
-      GST_RPAD_EVENTHANDLER (srcpad) = GST_RPAD_EVENTFUNC (srcpad);
-      GST_RPAD_EVENTHANDLER (sinkpad) = GST_RPAD_EVENTFUNC (sinkpad);
 
       /* the two elements should be put into the same group, 
        * this also means that they are in the same chain automatically */
@@ -1720,8 +1737,6 @@ gst_opt_scheduler_pad_link (GstScheduler *sched, GstPad *srcpad, GstPad *sinkpad
         GST_RPAD_CHAINHANDLER (sinkpad) = GST_RPAD_CHAINFUNC (sinkpad);
       else
         GST_RPAD_CHAINHANDLER (sinkpad) = gst_opt_scheduler_chain_wrapper;
-      GST_RPAD_EVENTHANDLER (srcpad) = GST_RPAD_EVENTFUNC (srcpad);
-      GST_RPAD_EVENTHANDLER (sinkpad) = GST_RPAD_EVENTFUNC (sinkpad);
 
       /* the two elements should be put into the same group, 
        * this also means that they are in the same chain automatically, 
@@ -1733,8 +1748,6 @@ gst_opt_scheduler_pad_link (GstScheduler *sched, GstPad *srcpad, GstPad *sinkpad
       GST_INFO ( "get to loop based link");
 
       GST_RPAD_GETHANDLER (srcpad) = GST_RPAD_GETFUNC (srcpad);
-      GST_RPAD_EVENTHANDLER (srcpad) = GST_RPAD_EVENTFUNC (srcpad);
-      GST_RPAD_EVENTHANDLER (sinkpad) = GST_RPAD_EVENTFUNC (sinkpad);
 
       /* the two elements should be put into the same group, 
        * this also means that they are in the same chain automatically, 
@@ -1751,9 +1764,8 @@ gst_opt_scheduler_pad_link (GstScheduler *sched, GstPad *srcpad, GstPad *sinkpad
 
       GST_RPAD_CHAINHANDLER (sinkpad) = gst_opt_scheduler_loop_wrapper;
       GST_RPAD_GETHANDLER (srcpad) = gst_opt_scheduler_get_wrapper;
-      GST_RPAD_EVENTHANDLER (sinkpad) = GST_RPAD_EVENTFUNC (sinkpad);
       /* events on the srcpad have to be intercepted as we might need to
-       * flush the buffer lists */
+       * flush the buffer lists, so override the given eventfunc */
       GST_RPAD_EVENTHANDLER (srcpad) = gst_opt_scheduler_event_wrapper;
 
       group1 = GST_ELEMENT_SCHED_GROUP (element1);