Simplified the FOURCC API to the caps, add a GST_MAKE_FOURCC macro to create a fourcc.

Original commit message from CVS:
Simplified the FOURCC API to the caps, add a GST_MAKE_FOURCC macro
to create a fourcc.
Adjusted the plugins to use the new FOURCC API

examples/helloworld/helloworld.c

@@ -13,7 +13,7 @@ void eos(GstElement *element)
 
 int main(int argc,char *argv[]) 
 {
-  GstElement *bin, *disksrc, *parse, *decoder, *osssink;
+  GstElement *bin, *disksrc, *parse, *decoder, *downmix, *osssink;
 
   gst_init(&argc,&argv);
 
@@ -34,6 +34,7 @@ int main(int argc,char *argv[])
   /* now it's time to get the parser */
   parse = gst_elementfactory_make("mp3parse","parse");
   decoder = gst_elementfactory_make("mpg123","decoder");
+  downmix = gst_elementfactory_make("stereo2mono","stereo2mono");
   /* and an audio sink */
   osssink = gst_elementfactory_make("osssink", "play_audio");
 
@@ -41,6 +42,7 @@ int main(int argc,char *argv[])
   gst_bin_add(GST_BIN(bin), disksrc);
   gst_bin_add(GST_BIN(bin), parse);
   gst_bin_add(GST_BIN(bin), decoder);
+  gst_bin_add(GST_BIN(bin), downmix);
   gst_bin_add(GST_BIN(bin), osssink);
 
   /* connect src to sink */
@@ -49,6 +51,8 @@ int main(int argc,char *argv[])
   gst_pad_connect(gst_element_get_pad(parse,"src"),
                   gst_element_get_pad(decoder,"sink"));
   gst_pad_connect(gst_element_get_pad(decoder,"src"),
+                  gst_element_get_pad(downmix,"sink"));
+  gst_pad_connect(gst_element_get_pad(downmix,"src"),
                   gst_element_get_pad(osssink,"sink"));
 
   /* start playing */
@@ -66,6 +70,7 @@ int main(int argc,char *argv[])
   gst_object_destroy(GST_OBJECT(osssink));
   gst_object_destroy(GST_OBJECT(parse));
   gst_object_destroy(GST_OBJECT(decoder));
+  gst_object_destroy(GST_OBJECT(downmix));
   gst_object_destroy(GST_OBJECT(disksrc));
   gst_object_destroy(GST_OBJECT(bin));
 

gst/gstprops.h

@@ -60,11 +60,12 @@ typedef enum {
 #define GST_PROPS_STRING_ID 	GINT_TO_POINTER(GST_PROPS_STRING_ID_NUM)
 #define GST_PROPS_LAST_ID 	GINT_TO_POINTER(GST_PROPS_LAST_ID_NUM)
 
+#define GST_MAKE_FOURCC(a,b,c,d) 	((a)|(b)<<8|(c)<<16|(d)<<24)
+
 #define GST_PROPS_LIST(a...) 		GST_PROPS_LIST_ID,##a,NULL
 #define GST_PROPS_INT(a) 		GST_PROPS_INT_ID,(GINT_TO_POINTER(a))
 #define GST_PROPS_INT_RANGE(a,b) 	GST_PROPS_INT_RANGE_ID,(GINT_TO_POINTER(a)),(GINT_TO_POINTER(b))
-#define GST_PROPS_FOURCC(a,b,c,d) 	GST_PROPS_FOURCC_ID,(GINT_TO_POINTER((a)|(b)<<8|(c)<<16|(d)<<24))
+#define GST_PROPS_FOURCC(a) 		GST_PROPS_FOURCC_ID,(GINT_TO_POINTER(a))
-#define GST_PROPS_FOURCC_INT(a) 	GST_PROPS_FOURCC_ID,(GINT_TO_POINTER(a))
 #define GST_PROPS_BOOLEAN(a) 		GST_PROPS_BOOL_ID,(GINT_TO_POINTER(a))
 #define GST_PROPS_STRING(a) 		GST_PROPS_STRING_ID,(a)
 

tests/old/examples/helloworld/helloworld.c

@@ -13,7 +13,7 @@ void eos(GstElement *element)
 
 int main(int argc,char *argv[]) 
 {
-  GstElement *bin, *disksrc, *parse, *decoder, *osssink;
+  GstElement *bin, *disksrc, *parse, *decoder, *downmix, *osssink;
 
   gst_init(&argc,&argv);
 
@@ -34,6 +34,7 @@ int main(int argc,char *argv[])
   /* now it's time to get the parser */
   parse = gst_elementfactory_make("mp3parse","parse");
   decoder = gst_elementfactory_make("mpg123","decoder");
+  downmix = gst_elementfactory_make("stereo2mono","stereo2mono");
   /* and an audio sink */
   osssink = gst_elementfactory_make("osssink", "play_audio");
 
@@ -41,6 +42,7 @@ int main(int argc,char *argv[])
   gst_bin_add(GST_BIN(bin), disksrc);
   gst_bin_add(GST_BIN(bin), parse);
   gst_bin_add(GST_BIN(bin), decoder);
+  gst_bin_add(GST_BIN(bin), downmix);
   gst_bin_add(GST_BIN(bin), osssink);
 
   /* connect src to sink */
@@ -49,6 +51,8 @@ int main(int argc,char *argv[])
   gst_pad_connect(gst_element_get_pad(parse,"src"),
                   gst_element_get_pad(decoder,"sink"));
   gst_pad_connect(gst_element_get_pad(decoder,"src"),
+                  gst_element_get_pad(downmix,"sink"));
+  gst_pad_connect(gst_element_get_pad(downmix,"src"),
                   gst_element_get_pad(osssink,"sink"));
 
   /* start playing */
@@ -66,6 +70,7 @@ int main(int argc,char *argv[])
   gst_object_destroy(GST_OBJECT(osssink));
   gst_object_destroy(GST_OBJECT(parse));
   gst_object_destroy(GST_OBJECT(decoder));
+  gst_object_destroy(GST_OBJECT(downmix));
   gst_object_destroy(GST_OBJECT(disksrc));
   gst_object_destroy(GST_OBJECT(bin));