From 8b3c7040d410b20ff1fdfef9b6908cd3d966c8aa Mon Sep 17 00:00:00 2001
From: Wim Taymans <wim.taymans@gmail.com>
Date: Tue, 17 Sep 2002 21:22:31 +0000
Subject: [PATCH] - Added value transform functions for caps and props boxed
 types

Original commit message from CVS:
- Added value transform functions for caps and props boxed types
- implement gst_props_new with a GList
- fixed silly typo in _gst_type_*
---
 gst/gstcaps.c  | 32 ++++++++++++++++++++++++++++++++
 gst/gstcaps.h  |  2 +-
 gst/gstprops.c | 35 ++++++++++++++++++++++++++++++++++-
 gst/gstprops.h |  2 +-
 4 files changed, 68 insertions(+), 3 deletions(-)

diff --git a/gst/gstcaps.c b/gst/gstcaps.c
index 2e13dd2..f7ed767 100644
--- a/gst/gstcaps.c
+++ b/gst/gstcaps.c
@@ -32,6 +32,35 @@ static GMutex *_gst_caps_chunk_lock;
 
 GType _gst_caps_type;
 
+static void
+transform_func (const GValue *src_value,
+		GValue *dest_value)
+{
+  GstCaps *caps = g_value_peek_pointer (src_value);
+  GString *result = g_string_new (""); 
+
+  g_string_append_printf (result, "(GstCaps *) ");
+		  
+  while (caps) {
+    gchar *props;
+    GValue value = { 0, }; /* the important thing is that value.type = 0 */
+    
+    g_string_append_printf (result,
+	          "{ %s; ", gst_caps_get_mime (caps));
+
+    g_value_init (&value, GST_TYPE_PROPS);
+    g_value_set_boxed  (&value, caps->properties);
+    props = g_strdup_value_contents (&value);
+
+    g_string_append (result, props);
+    g_free (props);
+
+    caps = caps->next;
+    g_string_append_printf (result, " }%s", caps?", ":"");
+  }
+  dest_value->data[0].v_pointer = result->str;
+}
+
 void
 _gst_caps_initialize (void)
 {
@@ -44,6 +73,9 @@ _gst_caps_initialize (void)
                                        (GBoxedCopyFunc) gst_caps_ref,
                                        (GBoxedFreeFunc) gst_caps_unref);
 
+  g_value_register_transform_func (_gst_caps_type,
+		                   G_TYPE_STRING,
+				   transform_func);
 }
 
 static guint16
diff --git a/gst/gstcaps.h b/gst/gstcaps.h
index b3d4eb3..c3c998b 100644
--- a/gst/gstcaps.h
+++ b/gst/gstcaps.h
@@ -32,7 +32,7 @@ typedef struct _GstCaps GstCaps;
 
 extern GType _gst_caps_type;
 
-#define GST_TYPE_CAPS  (_get_caps_type)
+#define GST_TYPE_CAPS  (_gst_caps_type)
 
 
 #define GST_CAPS(caps) \
diff --git a/gst/gstprops.c b/gst/gstprops.c
index e12c3c5..4902acb 100644
--- a/gst/gstprops.c
+++ b/gst/gstprops.c
@@ -68,6 +68,33 @@ static GMutex *_gst_props_chunk_lock;
 static gboolean 	gst_props_entry_check_compatibility 	(GstPropsEntry *entry1, GstPropsEntry *entry2);
 static GList* 		gst_props_list_copy 			(GList *propslist);
 
+static void
+transform_func (const GValue *src_value,
+		GValue *dest_value)
+{
+  GstProps *props = g_value_peek_pointer (src_value);
+  GString *result = g_string_new ("");
+  GList *propslist = props->properties;
+
+  while (propslist) { 
+    GstPropsEntry *entry = (GstPropsEntry *)propslist->data;
+    const gchar *name = g_quark_to_string (entry->propid);
+
+    switch (entry->propstype) {
+      case GST_PROPS_STRING_TYPE:
+	g_string_append_printf (result, "%s='%s'", name, entry->data.string_data.string);
+      default:
+	break;
+    }
+    
+    propslist = g_list_next (propslist);
+    if (propslist) {
+      g_string_append (result, "; ");
+    }
+  }
+  dest_value->data[0].v_pointer = result->str;
+}
+
 	
 void 
 _gst_props_initialize (void) 
@@ -86,6 +113,9 @@ _gst_props_initialize (void)
 		                       (GBoxedCopyFunc) gst_props_ref,
 		                       (GBoxedFreeFunc) gst_props_unref);
 
+  g_value_register_transform_func (_gst_props_type,
+                                   G_TYPE_STRING,
+                                   transform_func);
 }
 
 static void
@@ -107,7 +137,7 @@ gst_props_debug_entry (GstPropsEntry *entry)
       GST_DEBUG (GST_CAT_PROPERTIES, "%s: bool %d", name, entry->data.bool_data);
       break;
     case GST_PROPS_STRING_TYPE:
-      GST_DEBUG (GST_CAT_PROPERTIES, "%s: string %s", name, entry->data.string_data.string);
+      GST_DEBUG (GST_CAT_PROPERTIES, "%s: string \"%s\"", name, entry->data.string_data.string);
       break;
     case GST_PROPS_INT_RANGE_TYPE:
       GST_DEBUG (GST_CAT_PROPERTIES, "%s: int range %d-%d", name, entry->data.int_range_data.min,
@@ -185,6 +215,9 @@ G_STMT_START { 									\
     case GST_PROPS_STRING_TYPE:							\
       entry->data.string_data.string = g_strdup (va_arg (var_args, gchar*));	\
       break;									\
+    case GST_PROPS_LIST_TYPE:							\
+      entry->data.list_data.entries = g_list_copy (va_arg (var_args, GList*));	\
+      break;									\
     default:									\
       break;									\
   }										\
diff --git a/gst/gstprops.h b/gst/gstprops.h
index 61876da..ec4ae23 100644
--- a/gst/gstprops.h
+++ b/gst/gstprops.h
@@ -33,7 +33,7 @@ G_BEGIN_DECLS
 typedef struct _GstProps GstProps;
 extern GType _gst_props_type;
 
-#define GST_TYPE_PROPS	(_get_props_type)
+#define GST_TYPE_PROPS	(_gst_props_type)
 
 typedef enum {
    GST_PROPS_END_TYPE = 0,
-- 
2.7.4