gst/gstpad.c: check that caps are fixed

Original commit message from CVS:
* gst/gstpad.c: (gst_pad_set_explicit_caps):
check that caps are fixed
* gst/gstpad.c: (gst_pad_template_new):
don't try to simplify caps, costs too much time on gst_init
* gst/gstplugin.c: (gst_plugin_add_feature):
G_ERROR if features are added twice
* gst/gsttypefind.c: (gst_type_find_register):
* gst/gstelementfactory.c: (gst_element_register):
don't add features twice
* docs/random/ds/0.9-suggested-changes:
add note about possible gst_init optimization

ChangeLog

@@ -1,3 +1,17 @@
+2004-07-29  Benjamin Otte  <otte@gnome.org>
+
+	* gst/gstpad.c: (gst_pad_set_explicit_caps):
+	  check that caps are fixed
+	* gst/gstpad.c: (gst_pad_template_new):
+	  don't try to simplify caps, costs too much time on gst_init
+	* gst/gstplugin.c: (gst_plugin_add_feature):
+	  G_ERROR if features are added twice
+	* gst/gsttypefind.c: (gst_type_find_register):
+	* gst/gstelementfactory.c: (gst_element_register):
+	  don't add features twice
+	* docs/random/ds/0.9-suggested-changes:
+	  add note about possible gst_init optimization
+
 2004-07-28  David Schleef  <ds@schleef.org>
 
 	* testsuite/elements/Makefile.am:

docs/random/ds/0.9-suggested-changes

@@ -140,3 +140,7 @@ object hierarchy:
   - make this explicit by having a list of keywords instead of a fixed string
     with slashes
   - fix the editor/el browser to display this nicely
+
+- optimization:
+  - delay parsing caps from the registry until after startup (until they're 
+    first requested or maybe an idle handler for the main loop)

gst/gstelementfactory.c

@@ -214,20 +214,20 @@ gst_element_register (GstPlugin * plugin, const gchar * name, guint rank,
   factory = gst_element_factory_find (name);
 
   if (!factory) {
-    klass = GST_ELEMENT_CLASS (g_type_class_ref (type));
     factory =
         GST_ELEMENT_FACTORY (g_object_new (GST_TYPE_ELEMENT_FACTORY, NULL));
     gst_plugin_feature_set_name (GST_PLUGIN_FEATURE (factory), name);
     GST_LOG_OBJECT (factory, "Created new elementfactory for type %s",
         g_type_name (type));
+    gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
   } else {
     g_return_val_if_fail (factory->type == 0, FALSE);
-    klass = GST_ELEMENT_CLASS (g_type_class_ref (type));
     gst_element_factory_cleanup (factory);
     GST_LOG_OBJECT (factory, "Reuse existing elementfactory for type %s",
         g_type_name (type));
   }
 
+  klass = GST_ELEMENT_CLASS (g_type_class_ref (type));
   factory->type = type;
   __gst_element_details_copy (&factory->details, &klass->details);
   factory->padtemplates = g_list_copy (klass->padtemplates);
@@ -257,7 +257,6 @@ gst_element_register (GstPlugin * plugin, const gchar * name, guint rank,
   g_free (interfaces);
 
   gst_plugin_feature_set_rank (GST_PLUGIN_FEATURE (factory), rank);
-  gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
 
   return TRUE;
 

gst/gstpad.c

@@ -2463,6 +2463,7 @@ gst_pad_set_explicit_caps (GstPad * pad, const GstCaps * caps)
   GstPadLinkReturn link_ret;
 
   g_return_val_if_fail (GST_IS_PAD (pad), FALSE);
+  g_return_val_if_fail (gst_caps_is_fixed (caps), FALSE);
 
   GST_CAT_DEBUG (GST_CAT_PADS,
       "setting explicit caps on %s:%s to %" GST_PTR_FORMAT,
@@ -3652,6 +3653,10 @@ gst_pad_template_new (const gchar * name_template,
 
   g_return_val_if_fail (name_template != NULL, NULL);
   g_return_val_if_fail (caps != NULL, NULL);
+  g_return_val_if_fail (direction == GST_PAD_SRC
+      || direction == GST_PAD_SINK, NULL);
+  g_return_val_if_fail (presence == GST_PAD_ALWAYS
+      || presence == GST_PAD_SOMETIMES || presence == GST_PAD_REQUEST, NULL);
 
   if (!name_is_valid (name_template, presence))
     return NULL;
@@ -3672,7 +3677,6 @@ gst_pad_template_new (const gchar * name_template,
   GST_PAD_TEMPLATE_NAME_TEMPLATE (new) = g_strdup (name_template);
   GST_PAD_TEMPLATE_DIRECTION (new) = direction;
   GST_PAD_TEMPLATE_PRESENCE (new) = presence;
-  gst_caps_do_simplify (caps);
   GST_PAD_TEMPLATE_CAPS (new) = caps;
 
   return new;

gst/gstplugin.c

@@ -790,6 +790,8 @@ gst_plugin_add_feature (GstPlugin * plugin, GstPluginFeature * feature)
 {
   GstPluginFeature *oldfeature;
 
+  /* FIXME 0.9: get reference counting somewhat right in here, GstPluginFeatures 
+   * should probably be GstObjects that are sinked when adding them to a plugin */
   g_return_if_fail (plugin != NULL);
   g_return_if_fail (GST_IS_PLUGIN_FEATURE (feature));
   g_return_if_fail (feature != NULL);
@@ -797,7 +799,15 @@ gst_plugin_add_feature (GstPlugin * plugin, GstPluginFeature * feature)
   oldfeature = gst_plugin_find_feature (plugin,
       GST_PLUGIN_FEATURE_NAME (feature), G_OBJECT_TYPE (feature));
 
-  if (!oldfeature) {
+  if (oldfeature == feature) {
+    GST_ERROR ("feature %s has already been added",
+        GST_PLUGIN_FEATURE_NAME (feature));
+    /* g_object_unref (feature); */
+  } else if (oldfeature) {
+    GST_ERROR ("feature %s already present in plugin",
+        GST_PLUGIN_FEATURE_NAME (feature));
+    /* g_object_unref (feature); */
+  } else {
     feature->manager = plugin;
     plugin->features = g_list_prepend (plugin->features, feature);
     plugin->numfeatures++;

gst/gsttypefind.c

@@ -239,6 +239,7 @@ gst_type_find_register (GstPlugin * plugin, const gchar * name, guint rank,
     GST_DEBUG_OBJECT (factory, "using new typefind factory for %s", name);
     g_assert (GST_IS_TYPE_FIND_FACTORY (factory));
     gst_plugin_feature_set_name (GST_PLUGIN_FEATURE (factory), name);
+    gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
   } else {
     GST_DEBUG_OBJECT (factory, "using old typefind factory for %s", name);
   }
@@ -252,8 +253,6 @@ gst_type_find_register (GstPlugin * plugin, const gchar * name, guint rank,
   factory->function = func;
   factory->user_data = data;
 
-  gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
-
   return TRUE;
 }