gst/autoplug/gstspideridentity.c: don't delay links on the sink elements, it causes unnegotiated links.

Original commit message from CVS:
* gst/autoplug/gstspideridentity.c: (gst_spider_identity_link):
don't delay links on the sink elements, it causes unnegotiated
links.
* gst/elements/gsttypefindelement.c:
(gst_type_find_element_base_init):
add our padtemplates, we indeed do have some.
* gst/elements/gsttypefindelement.c:
(gst_type_find_element_handle_event),
(gst_type_find_element_chain):
don't push data when typefinding failed.
* gst/gstpad.c: (gst_pad_link_fixate):
check that no fixate function returns empty caps.
* gst/gstpad.c: (gst_pad_push):
check that the link is negotiated before data gets pushed.
* tools/gst-register.c: (main):
don't assert (fixes #148283)

ChangeLog

@@ -1,3 +1,22 @@
+2004-07-25  Benjamin Otte  <otte@gnome.org>
+
+	* gst/autoplug/gstspideridentity.c: (gst_spider_identity_link):
+	  don't delay links on the sink elements, it causes unnegotiated
+	  links.
+	* gst/elements/gsttypefindelement.c:
+	(gst_type_find_element_base_init):
+	  add our padtemplates, we indeed do have some.
+	* gst/elements/gsttypefindelement.c:
+	(gst_type_find_element_handle_event),
+	(gst_type_find_element_chain):
+	  don't push data when typefinding failed.
+	* gst/gstpad.c: (gst_pad_link_fixate):
+	  check that no fixate function returns empty caps.
+	* gst/gstpad.c: (gst_pad_push):
+	  check that the link is negotiated before data gets pushed.
+	* tools/gst-register.c: (main):
+	  don't assert (fixes #148283)
+
 2004-07-25  Steve Lhomme  <steve.lhomme@free.fr>
 
 	* docs/gst/gstreamer-sections.txt:

gst/autoplug/gstspideridentity.c

@@ -257,14 +257,15 @@ gst_spider_identity_link (GstPad * pad, const GstCaps * caps)
       GST_SPIDER_IDENTITY (gst_pad_get_parent (pad));
   GstPad *otherpad;
 
-  if (pad == spider_identity->src)
+  if (pad == spider_identity->src) {
     otherpad = spider_identity->sink;
-  else
+    if (GST_PAD_PEER (otherpad) == NULL)
+      return GST_PAD_LINK_DELAYED;
+  } else {
     otherpad = spider_identity->src;
+  }
 
   g_return_val_if_fail (otherpad != NULL, GST_PAD_LINK_REFUSED);
-  if (GST_PAD_PEER (otherpad) == NULL)
-    return GST_PAD_LINK_DELAYED;
 
   return gst_pad_try_set_caps (otherpad, caps);
 }

gst/elements/gsttypefindelement.c

@@ -127,6 +127,10 @@ gst_type_find_element_base_init (gpointer g_class)
 {
   GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
 
+  gst_element_class_add_pad_template (gstelement_class,
+      gst_static_pad_template_get (&type_find_element_src_template));
+  gst_element_class_add_pad_template (gstelement_class,
+      gst_static_pad_template_get (&type_find_element_sink_template));
   gst_element_class_set_details (gstelement_class,
       &gst_type_find_element_details);
 }
@@ -426,9 +430,13 @@ gst_type_find_element_handle_event (GstPad * pad, GstEvent * event)
               GST_PLUGIN_FEATURE_NAME (entry->factory), entry->probability);
           g_signal_emit (typefind, gst_type_find_element_signals[HAVE_TYPE], 0,
               entry->probability, entry->caps);
+          stop_typefinding (typefind);
+          gst_pad_event_default (pad, event);
+        } else {
+          gst_pad_event_default (pad, event);
+          GST_ELEMENT_ERROR (typefind, STREAM, TYPE_NOT_FOUND, (NULL), (NULL));
+          stop_typefinding (typefind);
         }
-        stop_typefinding (typefind);
-        gst_pad_event_default (pad, event);
         break;
       default:
         gst_data_unref (GST_DATA (event));
@@ -610,6 +618,7 @@ gst_type_find_element_chain (GstPad * pad, GstData * data)
         stop_typefinding (typefind);
       } else if (typefind->possibilities == NULL) {
         GST_ELEMENT_ERROR (typefind, STREAM, TYPE_NOT_FOUND, (NULL), (NULL));
+        stop_typefinding (typefind);
       } else {
         /* set up typefind element for next iteration */
         typefind->possibilities =

gst/gstpad.c

@@ -1217,6 +1217,11 @@ gst_pad_link_fixate (GstPadLink * link)
         if (i == 4) {
           /* we trust the default fixation function unconditionally */
           bad = FALSE;
+        } else if (gst_caps_is_empty (newcaps)) {
+          g_warning
+              ("a fixation function did not fixate correctly, it returned empty caps");
+          gst_caps_free (newcaps);
+          continue;
         } else if (gst_caps_is_any (caps)) {
           bad = gst_caps_is_any (newcaps);
         } else {
@@ -3176,6 +3181,13 @@ gst_pad_push (GstPad * pad, GstData * data)
     return;
   }
 
+  if (GST_IS_BUFFER (data) && !gst_pad_is_negotiated (pad)) {
+    g_warning ("pushing data on non-negotiated pad %s:%s, not allowed.",
+        GST_DEBUG_PAD_NAME (pad));
+    gst_data_unref (data);
+    return;
+  }
+
   GST_CAT_LOG_OBJECT (GST_CAT_SCHEDULING, pad, "pushing");
   peer = GST_RPAD_PEER (pad);
 

plugins/elements/gsttypefindelement.c

@@ -127,6 +127,10 @@ gst_type_find_element_base_init (gpointer g_class)
 {
   GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
 
+  gst_element_class_add_pad_template (gstelement_class,
+      gst_static_pad_template_get (&type_find_element_src_template));
+  gst_element_class_add_pad_template (gstelement_class,
+      gst_static_pad_template_get (&type_find_element_sink_template));
   gst_element_class_set_details (gstelement_class,
       &gst_type_find_element_details);
 }
@@ -426,9 +430,13 @@ gst_type_find_element_handle_event (GstPad * pad, GstEvent * event)
               GST_PLUGIN_FEATURE_NAME (entry->factory), entry->probability);
           g_signal_emit (typefind, gst_type_find_element_signals[HAVE_TYPE], 0,
               entry->probability, entry->caps);
+          stop_typefinding (typefind);
+          gst_pad_event_default (pad, event);
+        } else {
+          gst_pad_event_default (pad, event);
+          GST_ELEMENT_ERROR (typefind, STREAM, TYPE_NOT_FOUND, (NULL), (NULL));
+          stop_typefinding (typefind);
         }
-        stop_typefinding (typefind);
-        gst_pad_event_default (pad, event);
         break;
       default:
         gst_data_unref (GST_DATA (event));
@@ -610,6 +618,7 @@ gst_type_find_element_chain (GstPad * pad, GstData * data)
         stop_typefinding (typefind);
       } else if (typefind->possibilities == NULL) {
         GST_ELEMENT_ERROR (typefind, STREAM, TYPE_NOT_FOUND, (NULL), (NULL));
+        stop_typefinding (typefind);
       } else {
         /* set up typefind element for next iteration */
         typefind->possibilities =

tools/gst-register.c

@@ -135,7 +135,9 @@ main (int argc, char *argv[])
         /* move over paths from this registry to the next one */
         path_spill = g_list_concat (path_spill,
             gst_registry_get_path_list (registry));
-        g_assert (path_spill != NULL);
+        /* this assertion triggers for a non-readable/writable user registry,
+         * see #148283 */
+        /* g_assert (path_spill != NULL); */
       }
       /* also move over paths if the registry wasn't writable
        * FIXME: we should check if the paths that were loaded from this