Some prettification fixes to this interface... Make it look good, make it simple and make it more GObject'ific. This ...

Original commit message from CVS:
Some prettification fixes to this interface... Make it look good, make it simple and make it more GObject'ific. This means that it now works largely almost the same as GObject (concerning arguments that you give to the functions, and layout of the virtual functions). I've also got an OSS implementation for this, but it needs one small change before I commit that. Expect that this weekend or so.

2 files changed, 202 insertions, 96 deletions

diff --git a/gst-libs/gst/propertyprobe/propertyprobe.c b/gst-libs/gst/propertyprobe/propertyprobe.c
index f0cfe940..a8de4a9a 100644
--- a/gst-libs/gst/propertyprobe/propertyprobe.c
+++ b/gst-libs/gst/propertyprobe/propertyprobe.c
@@ -23,15 +23,17 @@
 #include "config.h"
 #endif
 
-#include <gst/propertyprobe/propertyprobe.h>
+#include <string.h>
 
-static void gst_property_probe_iface_init (GstPropertyProbeInterface *iface);
+#include "propertyprobe.h"
 
 enum {
-  NEED_PROBE,
+  SIGNAL_PROBE_NEEDED,
   LAST_SIGNAL
 };
 
+static void gst_property_probe_iface_init (GstPropertyProbeInterface *iface);
+
 static guint gst_property_probe_signals[LAST_SIGNAL] = { 0 };
 
 GType
@@ -52,11 +54,10 @@ gst_property_probe_get_type (void)
       NULL,
     };
 
-    gst_property_probe_type = g_type_register_static (G_TYPE_INTERFACE,
-					     "GstPropertyProbe",
-					     &gst_property_probe_info, 0);
-
-    g_type_interface_add_prerequisite (gst_property_probe_type, G_TYPE_OBJECT);
+    gst_property_probe_type =
+	g_type_register_static (G_TYPE_INTERFACE,
+				"GstPropertyProbe",
+				&gst_property_probe_info, 0);
   }
 
   return gst_property_probe_type;
@@ -68,109 +69,190 @@ gst_property_probe_iface_init (GstPropertyProbeInterface *iface)
   static gboolean initialized = FALSE;
 
   if (!initialized) {
-    gst_property_probe_signals[NEED_PROBE] =
-      g_signal_new ("need_probe",
-          GST_TYPE_PROPERTY_PROBE,
-          G_SIGNAL_RUN_LAST,
-          G_STRUCT_OFFSET (GstPropertyProbeInterface, need_probe),
-          NULL,
-          NULL,
-          gst_marshal_VOID__STRING,
-          G_TYPE_NONE, 1,
-          G_TYPE_STRING);
-
+    gst_property_probe_signals[SIGNAL_PROBE_NEEDED] =
+      g_signal_new ("probe_needed", G_TYPE_FROM_CLASS (iface), G_SIGNAL_RUN_LAST,
+		    G_STRUCT_OFFSET (GstPropertyProbeInterface, probe_needed),
+		    NULL, NULL, g_cclosure_marshal_VOID__POINTER,
+		    G_TYPE_NONE, 1, G_TYPE_POINTER);
     initialized = TRUE;
   }
 
   /* default virtual functions */
-  iface->get_list = NULL;
-  iface->probe_property = NULL;
-  iface->get_property_info = NULL;
-  iface->is_probed = NULL;
+  iface->get_properties = NULL;
+  iface->get_values     = NULL;
 }
 
-char **
-gst_property_probe_get_list (GstElement *element)
+const GList *
+gst_property_probe_get_properties (GstPropertyProbe *probe)
 {
   GstPropertyProbeInterface *iface;
-  
-  g_return_val_if_fail (GST_IS_PROPERTY_PROBE (element), NULL);
 
-  iface = GST_PROPERTY_PROBE_GET_IFACE (element);
-  if (iface->get_list) {
-    return iface->get_list (element);
+  g_return_val_if_fail (probe != NULL, NULL);
+                                                                                
+  iface = GST_PROPERTY_PROBE_GET_IFACE (probe);
+                                                                                
+  if (iface->get_properties)
+    return iface->get_properties (probe);
+                                                                                
+  return NULL;
+}
+
+const GParamSpec *
+gst_property_probe_get_property (GstPropertyProbe *probe,
+				 const gchar      *name)
+{
+  const GList *pspecs = gst_property_probe_get_properties (probe);
+
+  g_return_val_if_fail (probe != NULL, NULL);
+  g_return_val_if_fail (name != NULL, NULL);
+
+  while (pspecs) {
+    const GParamSpec *pspec = pspecs->data;
+
+    if (!strcmp (pspec->name, name))
+      return pspec;
+
+    pspecs = pspecs->next;
   }
 
   return NULL;
 }
 
 void
-gst_property_probe_probe_property (GstElement *element,
-    const char *property)
+gst_property_probe_probe_property (GstPropertyProbe *probe,
+				   const GParamSpec *pspec)
 {
   GstPropertyProbeInterface *iface;
-  GParamSpec *ps;
-  
-  g_return_if_fail (GST_IS_PROPERTY_PROBE (element));
-  g_return_if_fail (GST_STATE (element) == GST_STATE_NULL);
-
-  ps = g_object_class_find_property (G_OBJECT_CLASS (element), property);
-  if (ps == NULL) return;
-  
-  iface = GST_PROPERTY_PROBE_GET_IFACE (element);
-  if (iface->probe_property) {
-    iface->probe_property (element, ps);
-  }
+
+  g_return_if_fail (probe != NULL);
+  g_return_if_fail (pspec != NULL);
+
+  iface = GST_PROPERTY_PROBE_GET_IFACE (probe);
+
+  if (iface->probe_property)
+    iface->probe_property (probe, pspec->param_id, pspec);
 }
 
-gchar **
-gst_property_probe_get_property_info (GstElement *element,
-    const gchar *property)
+void
+gst_property_probe_probe_property_name (GstPropertyProbe *probe,
+					const gchar      *name)
 {
-  GstPropertyProbeInterface *iface;
-  GParamSpec *ps;
-  
-  g_return_val_if_fail (GST_IS_PROPERTY_PROBE (element), NULL);
-
-  ps = g_object_class_find_property (G_OBJECT_CLASS (element), property);
-  if (ps == NULL) return NULL;
-  
-  iface = GST_PROPERTY_PROBE_GET_IFACE (element);
-  if (iface->get_property_info) {
-    return iface->get_property_info (element, ps);
+  const GParamSpec *pspec;
+
+  g_return_if_fail (probe != NULL);
+  g_return_if_fail (name != NULL);
+
+  pspec = g_object_class_find_property (G_OBJECT_CLASS (probe), name);
+  if (!pspec) {
+    g_warning ("No such property %s", name);
+    return;
   }
-  return NULL;
+
+  gst_property_probe_probe_property (probe, pspec);
 }
 
 gboolean
-gst_property_probe_is_probed (GstElement *element,
-    const char *property)
+gst_property_probe_needs_probe (GstPropertyProbe *probe,
+				const GParamSpec *pspec)
 {
   GstPropertyProbeInterface *iface;
-  GParamSpec *ps;
-  
-  g_return_val_if_fail (GST_IS_PROPERTY_PROBE (element), FALSE);
 
-  ps = g_object_class_find_property (G_OBJECT_CLASS (element), property);
-  if (ps == NULL) return FALSE;
+  g_return_val_if_fail (probe != NULL, FALSE);
+  g_return_val_if_fail (pspec != NULL, FALSE);
+
+  iface = GST_PROPERTY_PROBE_GET_IFACE (probe);
+
+  if (iface->needs_probe)
+    return iface->needs_probe (probe, pspec->param_id, pspec);
 
-  iface = GST_PROPERTY_PROBE_GET_IFACE (element);
-  if (iface->is_probed) {
-    return iface->is_probed (element, ps);
-  }
   return FALSE;
 }
 
-gchar **
-gst_property_probe_get_possibilities (GstElement *element,
-    const char *property)
+gboolean
+gst_property_probe_needs_probe_name (GstPropertyProbe *probe,
+				     const gchar      *name)
+{
+  const GParamSpec *pspec;
+
+  g_return_val_if_fail (probe != NULL, FALSE);
+  g_return_val_if_fail (name != NULL, FALSE);
+
+  pspec = g_object_class_find_property (G_OBJECT_CLASS (probe), name);
+  if (!pspec) {
+    g_warning ("No such property %s", name);
+    return FALSE;
+  }
+
+  return gst_property_probe_needs_probe (probe, pspec);
+}
+                                                                               
+GValueArray *
+gst_property_probe_get_values (GstPropertyProbe *probe,
+			       const GParamSpec *pspec)
+{
+  GstPropertyProbeInterface *iface;
+
+  g_return_val_if_fail (probe != NULL, NULL);
+  g_return_val_if_fail (pspec != NULL, NULL);
+
+  iface = GST_PROPERTY_PROBE_GET_IFACE (probe);
+
+  if (iface->get_values)
+    return iface->get_values (probe, pspec->param_id, pspec);
+
+  return NULL;
+}
+
+GValueArray *
+gst_property_probe_get_values_name (GstPropertyProbe *probe,
+				    const gchar      *name)
 {
-  g_return_val_if_fail (GST_IS_PROPERTY_PROBE (element), NULL);
+  const GParamSpec *pspec;
+
+  g_return_val_if_fail (probe != NULL, NULL);
+  g_return_val_if_fail (name != NULL, NULL);
 
-  if (!gst_property_probe_is_probed (element, property)){
-    gst_property_probe_probe_property (element, property);
+  pspec = g_object_class_find_property (G_OBJECT_CLASS (probe), name);
+  if (!pspec) {
+    g_warning ("No such property %s", name);
+    return NULL;
   }
 
-  return gst_property_probe_get_property_info (element, property);
+  return gst_property_probe_get_values (probe, pspec);
 }
 
+
+GValueArray *
+gst_property_probe_probe_and_get_values (GstPropertyProbe *probe,
+					 const GParamSpec *pspec)
+{
+  GstPropertyProbeInterface *iface;
+
+  g_return_val_if_fail (probe != NULL, NULL);
+  g_return_val_if_fail (pspec != NULL, NULL);
+
+  iface = GST_PROPERTY_PROBE_GET_IFACE (probe);
+
+  if (gst_property_probe_needs_probe (probe, pspec))
+    gst_property_probe_probe_property (probe, pspec);
+
+  return gst_property_probe_get_values (probe, pspec);
+}
+
+GValueArray *
+gst_property_probe_probe_and_get_values_name (GstPropertyProbe *probe,
+					      const gchar      *name)
+{
+  const GParamSpec *pspec;
+
+  g_return_val_if_fail (probe != NULL, NULL);
+  g_return_val_if_fail (name != NULL, NULL);
+
+  pspec = g_object_class_find_property (G_OBJECT_CLASS (probe), name);
+  if (!pspec) {
+    g_warning ("No such property %s", name);
+    return NULL;
+  }
+
+  return gst_property_probe_probe_and_get_values (probe, pspec);
+}
diff --git a/gst-libs/gst/propertyprobe/propertyprobe.h b/gst-libs/gst/propertyprobe/propertyprobe.h
index 5fc9cf66..3fe08f0b 100644
--- a/gst-libs/gst/propertyprobe/propertyprobe.h
+++ b/gst-libs/gst/propertyprobe/propertyprobe.h
@@ -41,32 +41,56 @@ typedef struct _GstPropertyProbeInterface {
   GTypeInterface klass;
 
   /* signals */
-  void (*need_probe) (GstPropertyProbe *property_probe, const gchar *property);
+  void          (*probe_needed)   (GstPropertyProbe *probe,
+				   const GParamSpec *pspec);
 
   /* virtual functions */
-  gchar ** (*get_list) (GstElement *property_probe);
-  void (*probe_property) (GstElement *property_probe, const GParamSpec *property);
-  gchar ** (*get_property_info) (GstElement *property_probe,
-      const GParamSpec *property);
-  gboolean (*is_probed) (GstElement *element, const GParamSpec *property);
-  
+  const GList * (*get_properties) (GstPropertyProbe *probe);
+  gboolean      (*needs_probe)    (GstPropertyProbe *probe,
+				   guint             prop_id,
+				   const GParamSpec *pspec);
+  void          (*probe_property) (GstPropertyProbe *probe,
+				   guint             prop_id,
+				   const GParamSpec *pspec);
+  GValueArray * (*get_values)     (GstPropertyProbe *probe,
+				   guint             prop_id,
+				   const GParamSpec *pspec);
+
   GST_CLASS_PADDING
 } GstPropertyProbeInterface;
 
-GType		gst_property_probe_get_type	(void);
+GType	     gst_property_probe_get_type       (void);
 
 /* virtual class function wrappers */
-gchar ** gst_property_probe_get_list (GstElement *element);
-void gst_property_probe_probe_property (GstElement *element,
-    const gchar *property);
-gchar ** gst_property_probe_get_property_info (GstElement *element,
-    const gchar *property);
-gboolean gst_property_probe_is_probed (GstElement *element,
-    const gchar *property);
-
-/* utility functions */
-gchar ** gst_property_probe_get_possibilities (GstElement *element,
-    const gchar *property);
+
+/* returns list of GParamSpecs */
+const GList *     gst_property_probe_get_properties      (GstPropertyProbe *probe);
+const GParamSpec *gst_property_probe_get_property        (GstPropertyProbe *probe,
+							  const gchar      *name);
+
+/* probe one property */
+void		  gst_property_probe_probe_property      (GstPropertyProbe *probe,
+							  const GParamSpec *pspec);
+void		  gst_property_probe_probe_property_name (GstPropertyProbe *probe,
+						          const gchar      *name);
+
+/* do we need a probe? */
+gboolean	  gst_property_probe_needs_probe         (GstPropertyProbe *probe,
+							  const GParamSpec *pspec);
+gboolean	  gst_property_probe_needs_probe_name    (GstPropertyProbe *probe,
+							  const gchar      *name);
+
+/* returns list of GValues */
+GValueArray *     gst_property_probe_get_values          (GstPropertyProbe *probe,
+							  const GParamSpec *pspec);
+GValueArray *     gst_property_probe_get_values_name     (GstPropertyProbe *probe,
+							  const gchar      *name);
+
+/* sugar */
+GValueArray *     gst_property_probe_probe_and_get_values (GstPropertyProbe *probe,
+							  const GParamSpec *pspec);
+GValueArray *     gst_property_probe_probe_and_get_values_name (GstPropertyProbe *probe,
+							  const gchar      *name);
 
 G_END_DECLS