add GstGError to help the bindings

Original commit message from CVS:
add GstGError to help the bindings

ChangeLog

@@ -1,3 +1,18 @@
+2004-03-09  Johan Dahlin  <johan@gnome.org>
+
+	Reviewed by: Thomas Vander Stichele
+
+	* gst/gstelement.c (gst_element_class_init): register second
+	parameter as GST_TYPE_G_ERROR instead of G_TYPE_POINTER, so
+	language bindings can (de)marshall correctly.
+
+	* gst/gsterror.h: Add GST_TYPE_G_ERROR and cleanup a little bit
+
+	* gst/gsterror.c (gst_g_error_get_type): New function
+
+	* gst/gstmarshal.list: Remove VOID:OBJECT,POINTER,STRING, replace
+	with VOID:OBJECT,OBJECT,STRING 
+
 2004-03-10  Jan Schmidt  <thaytan@mad.scientist.com>
 
 	* gst/registries/gstxmlregistry.c: (gst_xml_registry_load):

docs/gst/tmpl/gstxml.sgml

@@ -110,6 +110,10 @@ All GstElements can be serialized to an XML presentation and subsequently loaded
 
 </para>
 
+@: 
+@: 
+@:
+
 @gstxml: the object which received the signal.
 @arg1: 
 @arg2: 
@@ -119,7 +123,7 @@ All GstElements can be serialized to an XML presentation and subsequently loaded
 
 </para>
 
-@: 
-@: 
-@: 
+@gstxml: the object which received the signal.
+@arg1: 
+@arg2: 
 

gst/gstelement.c

@@ -132,8 +132,8 @@ gst_element_class_init (GstElementClass *klass)
   gst_element_signals[ERROR] =
     g_signal_new ("error", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
                   G_STRUCT_OFFSET (GstElementClass, error), NULL, NULL,
-                  gst_marshal_VOID__OBJECT_POINTER_STRING, G_TYPE_NONE, 3,
-                  GST_TYPE_ELEMENT, G_TYPE_POINTER,
+                  gst_marshal_VOID__OBJECT_OBJECT_STRING, G_TYPE_NONE, 3,
+                  GST_TYPE_ELEMENT, GST_TYPE_G_ERROR,
                   G_TYPE_STRING);
    gst_element_signals[EOS] =
     g_signal_new ("eos", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,

gst/gsterror.c

@@ -33,6 +33,18 @@ GQuark gst_ ## string ## _error_quark (void) {				\
     quark = g_quark_from_static_string ("gst-" # string "-error-quark"); \
   return quark; }
 
+GType
+gst_g_error_get_type (void)
+{
+  static GType type = 0;
+  
+  if (!type)
+    type = g_boxed_type_register_static ("GstGError",
+					 (GBoxedCopyFunc) g_error_copy,
+					 (GBoxedFreeFunc) g_error_free);
+    return type;
+}
+
 /* initialize the dynamic table of translated core errors */
 static gchar ** _gst_core_errors_init ()
 {

gst/gsterror.h

@@ -53,9 +53,6 @@ typedef enum {
 }
 GstCoreError;
 
-#define GST_CORE_ERROR gst_core_error_quark ()
-GQuark gst_core_error_quark (void);
-
 /* Library errors are for errors from the library being used by elements
    initializing, closing, ... */
 typedef enum {
@@ -69,10 +66,6 @@ typedef enum {
 }
 GstLibraryError;
 
-#define GST_LIBRARY_ERROR gst_library_error_quark ()
-GQuark gst_library_error_quark (void);
-
-
 /* Resource errors are for anything external used by an element:
    memory, files, network connections, process space, ...
    They're typically used by source and sink elements */
@@ -94,9 +87,6 @@ typedef enum {
 }
 GstResourceError;
 
-#define GST_RESOURCE_ERROR gst_resource_error_quark ()
-GQuark gst_resource_error_quark (void);
-
 /* Stream errors are for anything related to the stream being processed:
    format errors, media type errors, ...
    They're typically used by decoders, demuxers, converters, ... */
@@ -116,12 +106,22 @@ typedef enum {
 }
 GstStreamError;
 
-#define GST_STREAM_ERROR gst_stream_error_quark ()
-GQuark gst_stream_error_quark (void);
+/* This should go away once we convinced glib people to register GError */
+#define GST_TYPE_G_ERROR    (gst_g_error_get_type ())
 
+#define GST_LIBRARY_ERROR   gst_library_error_quark ()
+#define GST_RESOURCE_ERROR  gst_resource_error_quark ()
+#define GST_CORE_ERROR      gst_core_error_quark ()
+#define GST_STREAM_ERROR    gst_stream_error_quark ()
 
-#define GST_ERROR_SYSTEM ("system error: %s", g_strerror (errno))
-gchar * gst_error_get_message (GQuark domain, gint code);
+#define GST_ERROR_SYSTEM    ("system error: %s", g_strerror (errno))
+
+GType   gst_g_error_get_type     (void);
+gchar * gst_error_get_message    (GQuark domain, gint code);
+GQuark  gst_stream_error_quark   (void);
+GQuark  gst_core_error_quark     (void);
+GQuark  gst_resource_error_quark (void);
+GQuark  gst_library_error_quark  (void);
 
 G_END_DECLS
 

gst/gstmarshal.list

@@ -9,7 +9,7 @@ VOID:OBJECT
 VOID:OBJECT,PARAM
 VOID:OBJECT,POINTER
 VOID:OBJECT,BOXED
-VOID:OBJECT,POINTER,STRING
+VOID:OBJECT,OBJECT,STRING
 VOID:OBJECT,STRING
 VOID:INT,INT
 VOID:INT64