Move over from GstInterface to GstImplementsInterface. Also adds some signals to several interfaces

Original commit message from CVS:
Move over from GstInterface to GstImplementsInterface. Also adds some signals to several interfaces

6 files changed, 74 insertions, 7 deletions

diff --git a/gst-libs/gst/colorbalance/Makefile.am b/gst-libs/gst/colorbalance/Makefile.am
index dc8bd0ea..b1f6bec4 100644
--- a/gst-libs/gst/colorbalance/Makefile.am
+++ b/gst-libs/gst/colorbalance/Makefile.am
@@ -9,5 +9,23 @@ noinst_LTLIBRARIES = libgstcolorbalance.la
 
 libgstcolorbalance_la_SOURCES = \
 	colorbalance.c \
-	colorbalancechannel.c
+	colorbalancechannel.c \
+	colorbalancemarshal.c
 libgstcolorbalance_la_CFLAGS = $(GST_CFLAGS) $(GST_OPT_CFLAGS)
+
+BUILT_SOURCES = \
+	colorbalancemarshal.c \
+	colorbalancemarshal.h
+built_headers =	\
+	colorbalancemarshal.h
+
+EXTRA_DIST = colorbalancemarshal.list
+
+colorbalancemarshal.h: colorbalancemarshal.list
+	glib-genmarshal --header --prefix=gst_color_balance_marshal $^ > colorbalancemarshal.h.tmp
+	mv colorbalancemarshal.h.tmp colorbalancemarshal.h
+
+colorbalancemarshal.c: colorbalancemarshal.list
+	echo "#include \"colorbalancemarshal.h\"" >> colorbalancemarshal.c.tmp
+	glib-genmarshal --body --prefix=gst_color_balance_marshal $^ >> colorbalancemarshal.c.tmp
+	mv colorbalancemarshal.c.tmp colorbalancemarshal.c
diff --git a/gst-libs/gst/colorbalance/colorbalance.c b/gst-libs/gst/colorbalance/colorbalance.c
index 829cf5f6..163111cd 100644
--- a/gst-libs/gst/colorbalance/colorbalance.c
+++ b/gst-libs/gst/colorbalance/colorbalance.c
@@ -25,9 +25,17 @@
 #endif
 
 #include "colorbalance.h"
+#include "colorbalancemarshal.h"
+
+enum {
+  VALUE_CHANGED,
+  LAST_SIGNAL
+};
 
 static void 	gst_color_balance_class_init	(GstColorBalanceClass *klass);
 
+static guint gst_color_balance_signals[LAST_SIGNAL] = { 0 };
+
 GType
 gst_color_balance_get_type (void)
 {
@@ -50,7 +58,7 @@ gst_color_balance_get_type (void)
 						     "GstColorBalance",
 						     &gst_color_balance_info, 0);
     g_type_interface_add_prerequisite (gst_color_balance_type,
-				       GST_TYPE_INTERFACE);
+				       GST_TYPE_IMPLEMENTS_INTERFACE);
   }
 
   return gst_color_balance_type;
@@ -59,6 +67,21 @@ gst_color_balance_get_type (void)
 static void
 gst_color_balance_class_init (GstColorBalanceClass *klass)
 {
+  static gboolean initialized = FALSE;
+  
+  if (!initialized) {
+    gst_color_balance_signals[VALUE_CHANGED] =
+      g_signal_new ("value_changed",
+		    GST_TYPE_COLOR_BALANCE, G_SIGNAL_RUN_LAST,
+		    G_STRUCT_OFFSET (GstColorBalanceClass, value_changed),
+		    NULL, NULL,
+		    gst_color_balance_marshal_VOID__OBJECT_INT,
+		    G_TYPE_NONE, 2,
+		    GST_TYPE_COLOR_BALANCE_CHANNEL, G_TYPE_INT);
+      
+    initialized = TRUE;
+  }
+
   /* default virtual functions */
   klass->list_channels = NULL;
   klass->set_value = NULL;
@@ -101,3 +124,15 @@ gst_color_balance_get_value (GstColorBalance        *balance,
 
   return channel->min_value;
 }
+
+void
+gst_color_balance_value_changed (GstColorBalance        *balance,
+				 GstColorBalanceChannel *channel,
+				 gint                    value)
+{
+  g_signal_emit (G_OBJECT (balance),
+                 gst_color_balance_signals[VALUE_CHANGED],
+		 0, channel, value);
+
+  g_signal_emit_by_name (G_OBJECT (channel), "value_changed", value);
+}
diff --git a/gst-libs/gst/colorbalance/colorbalance.h b/gst-libs/gst/colorbalance/colorbalance.h
index 2b9d27d3..041c4e8f 100644
--- a/gst-libs/gst/colorbalance/colorbalance.h
+++ b/gst-libs/gst/colorbalance/colorbalance.h
@@ -30,13 +30,13 @@ G_BEGIN_DECLS
 #define GST_TYPE_COLOR_BALANCE \
   (gst_color_balance_get_type ())
 #define GST_COLOR_BALANCE(obj) \
-  (GST_INTERFACE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_COLOR_BALANCE, \
-				      GstColorBalance))
+  (GST_IMPLEMENTS_INTERFACE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_COLOR_BALANCE, \
+						 GstColorBalance))
 #define GST_COLOR_BALANCE_CLASS(klass) \
   (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_COLOR_BALANCE, \
 			    GstColorBalanceClass))
 #define GST_IS_COLOR_BALANCE(obj) \
-  (GST_INTERFACE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_COLOR_BALANCE))
+  (GST_IMPLEMENTS_INTERFACE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_COLOR_BALANCE))
 #define GST_IS_COLOR_BALANCE_CLASS(klass) \
   (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_COLOR_BALANCE))
 #define GST_COLOR_BALANCE_GET_CLASS(inst) \
@@ -55,6 +55,13 @@ typedef struct _GstColorBalanceClass {
 				   gint                    value);
   gint          (* get_value)     (GstColorBalance        *balance,
 				   GstColorBalanceChannel *channel);
+
+  /* signals */
+  void (* value_changed) (GstColorBalance        *balance,
+			  GstColorBalanceChannel *channel,
+			  gint                    value);
+
+  GST_CLASS_PADDING
 } GstColorBalanceClass;
 
 GType	gst_color_balance_get_type	(void);
@@ -68,6 +75,11 @@ void	gst_color_balance_set_value	(GstColorBalance        *balance,
 gint	gst_color_balance_get_value	(GstColorBalance        *balance,
 					 GstColorBalanceChannel *channel);
 
+/* trigger signal */
+void	gst_color_balance_value_changed (GstColorBalance        *balance,
+					 GstColorBalanceChannel *channel,
+					 gint                    value);
+
 G_END_DECLS
 
 #endif /* __GST_COLOR_BALANCE_H__ */
diff --git a/gst-libs/gst/colorbalance/colorbalancechannel.c b/gst-libs/gst/colorbalance/colorbalancechannel.c
index 8241bfe7..f8710120 100644
--- a/gst-libs/gst/colorbalance/colorbalancechannel.c
+++ b/gst-libs/gst/colorbalance/colorbalancechannel.c
@@ -96,8 +96,7 @@ gst_color_balance_channel_dispose (GObject *object)
 {
   GstColorBalanceChannel *channel = GST_COLOR_BALANCE_CHANNEL (object);
 
-  if (channel->label)
-    g_free (channel->label);
+  g_free (channel->label);
 
   if (parent_class->dispose)
     parent_class->dispose (object);
diff --git a/gst-libs/gst/colorbalance/colorbalancechannel.h b/gst-libs/gst/colorbalance/colorbalancechannel.h
index 5f738ecb..81d0bd34 100644
--- a/gst-libs/gst/colorbalance/colorbalancechannel.h
+++ b/gst-libs/gst/colorbalance/colorbalancechannel.h
@@ -53,6 +53,8 @@ typedef struct _GstColorBalanceChannelClass {
   /* signals */
   void (* value_changed) (GstColorBalanceChannel *channel,
 			  gint                    value);
+
+  GST_CLASS_PADDING
 } GstColorBalanceChannelClass;
 
 GType	gst_color_balance_channel_get_type (void);
diff --git a/gst-libs/gst/colorbalance/colorbalancemarshal.list b/gst-libs/gst/colorbalance/colorbalancemarshal.list
new file mode 100644
index 00000000..b9d0c499
--- /dev/null
+++ b/gst-libs/gst/colorbalance/colorbalancemarshal.list
@@ -0,0 +1 @@
+VOID:OBJECT,INT