docs/design/part-TODO.txt: Add some more TODO items

Original commit message from CVS:
* docs/design/part-TODO.txt:
Add some more TODO items
* gst/gstbin.c: (find_message), (gst_bin_change_state_func):
Improve debugging.
* gst/gstcaps.c: (gst_caps_intersect):
Optimize trivial intersection case between identical caps pointers.
* gst/gstelement.c: (gst_element_continue_state),
(gst_element_set_state_func):
* gst/gstpad.c:
Fix spelling and grammar mistakes.

ChangeLog

@@ -1,3 +1,19 @@
+2007-08-07  Wim Taymans  <wim.taymans@gmail.com>
+
+	* docs/design/part-TODO.txt:
+	Add some more TODO items
+
+	* gst/gstbin.c: (find_message), (gst_bin_change_state_func):
+	Improve debugging.
+
+	* gst/gstcaps.c: (gst_caps_intersect):
+	Optimize trivial intersection case between identical caps pointers.
+
+	* gst/gstelement.c: (gst_element_continue_state),
+	(gst_element_set_state_func):
+	* gst/gstpad.c:
+	Fix spelling and grammar mistakes.
+
 2007-08-05  Stefan Kost  <ensonic@users.sf.net>
 
 	* po/POTFILES.in:

docs/design/part-TODO.txt

@@ -7,6 +7,9 @@ API/ABI
   keyframe, after the seek you want to get the new stream time that will
   actually be used to update the slider bar.
 
+- make gst_pad_push_event() return a GstFlowReturn so that we can resend
+  NEWSEGMENT and other events.
+
 - GstEvent, GstMessage register like GstFormat or GstQuery.
 
 - query POSITION/DURATION return accuracy. Just a flag or accuracy percentage.
@@ -22,6 +25,25 @@ API/ABI
 - use | instead of + as divider in serialization of Flags
   (gstvalue/gststructure)
 
+- rethink how we handle dynamic replugging wrt segments and other events that
+  already got pushed and need to be pushed again.
+
+- keep track of seeks with a counter so that we can match seek events received
+  in the demuxer srcpads. This is needed because a normal seek on a pipeline
+  will send the seek event on all sinks, which results in the demuxer receiving
+  the seek twice. If there is no way to see that the seek is the same, it will
+  perform the seek twice.
+  It would also be nice to have this same sequence number in the segment event
+  that resulted from the seek so that everything seek related can be tracked
+  properly.
+
+- When an element goes to PAUSED there is no way to figure out the running time
+  when this happened. One could think that we can store this time in the
+  base_time field of the element but that causes problems when the element is
+  still using the base_time before really PAUSING. We seem to need a new element
+  field for this. The running time when an element is paused can be usefull to
+  clip late buffers instead of prerolling on them.
+
 
 IMPLEMENTATION
 --------------

gst/gstbin.c

@@ -731,6 +731,14 @@ find_message (GstBin * bin, GstObject * src, GstMessageType types)
   result = g_list_find_custom (bin->messages, &find,
       (GCompareFunc) message_check);
 
+  if (result) {
+    GST_DEBUG_OBJECT (bin, "we found a message %p from %s mathing types %08x",
+        result->data, GST_OBJECT_NAME (GST_MESSAGE_CAST (result->data)->src),
+        types);
+  } else {
+    GST_DEBUG_OBJECT (bin, "no message found matching types %08x", types);
+  }
+
   return result;
 }
 

gst/gstcaps.c

@@ -1214,9 +1214,15 @@ gst_caps_intersect (const GstCaps * caps1, const GstCaps * caps2)
   g_return_val_if_fail (GST_IS_CAPS (caps1), NULL);
   g_return_val_if_fail (GST_IS_CAPS (caps2), NULL);
 
-  if (gst_caps_is_empty (caps1) || gst_caps_is_empty (caps2)) {
+  /* caps are exactly the same pointers, just copy one caps */
+  if (caps1 == caps2)
+    return gst_caps_copy (caps1);
+
+  /* empty caps on either side, return empty */
+  if (gst_caps_is_empty (caps1) || gst_caps_is_empty (caps2))
     return gst_caps_new_empty ();
-  }
+
+  /* one of the caps is any, just copy the other caps */
   if (gst_caps_is_any (caps1))
     return gst_caps_copy (caps2);
   if (gst_caps_is_any (caps2))

gst/gstelement.c

@@ -2344,7 +2344,7 @@ gst_element_set_state_func (GstElement * element, GstState state)
       (next != state ? "intermediate" : "final"),
       gst_element_state_get_name (current), gst_element_state_get_name (next));
 
-  /* now signal any waiters, they will error since the cookie was increased */
+  /* now signal any waiters, they will error since the cookie was incremented */
   GST_STATE_BROADCAST (element);
 
   GST_OBJECT_UNLOCK (element);

gst/gstpad.c

@@ -4327,8 +4327,9 @@ gst_pad_start_task (GstPad * pad, GstTaskFunction func, gpointer data)
  * gst_pad_pause_task:
  * @pad: the #GstPad to pause the task of
  *
- * Pause the task of @pad. This function will also make sure that the
- * function executed by the task will effectively stop.
+ * Pause the task of @pad. This function will also wait until the
+ * function executed by the task is finished if this function is not
+ * called from the task function.
  *
  * Returns: a TRUE if the task could be paused or FALSE when the pad
  * has no task.