gsm: allow per feature registration

Split plugin into features including
dynamic types which can be indiviually
registered during a static build.

More details here:

https://gitlab.freedesktop.org/gstreamer/gst-build/-/merge_requests/199
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/661

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2038>

ext/gsm/gstgsm.c

@@ -29,14 +29,12 @@
 static gboolean
 plugin_init (GstPlugin * plugin)
 {
-  if (!gst_element_register (plugin, "gsmenc", GST_RANK_PRIMARY,
-          GST_TYPE_GSMENC))
-    return FALSE;
-  if (!gst_element_register (plugin, "gsmdec", GST_RANK_PRIMARY,
-          GST_TYPE_GSMDEC))
-    return FALSE;
+  gboolean ret = FALSE;
 
-  return TRUE;
+  ret |= GST_ELEMENT_REGISTER (gsmenc, plugin);
+  ret |= GST_ELEMENT_REGISTER (gsmdec, plugin);
+
+  return ret;
 }
 
 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,

ext/gsm/gstgsmdec.c

@@ -74,6 +74,8 @@ GST_STATIC_PAD_TEMPLATE ("src",
     );
 
 G_DEFINE_TYPE (GstGSMDec, gst_gsmdec, GST_TYPE_AUDIO_DECODER);
+GST_ELEMENT_REGISTER_DEFINE (gsmdec, "gsmdec", GST_RANK_PRIMARY,
+    GST_TYPE_GSMDEC);
 
 static void
 gst_gsmdec_class_init (GstGSMDecClass * klass)

ext/gsm/gstgsmdec.h

@@ -61,6 +61,8 @@ struct _GstGSMDecClass
 
 GType gst_gsmdec_get_type (void);
 
+GST_ELEMENT_REGISTER_DECLARE (gsmdec);
+
 G_END_DECLS
 
 #endif /* __GST_GSMDEC_H__ */

ext/gsm/gstgsmenc.c

@@ -68,6 +68,8 @@ GST_STATIC_PAD_TEMPLATE ("sink",
     );
 
 G_DEFINE_TYPE (GstGSMEnc, gst_gsmenc, GST_TYPE_AUDIO_ENCODER);
+GST_ELEMENT_REGISTER_DEFINE (gsmenc, "gsmenc", GST_RANK_PRIMARY,
+    GST_TYPE_GSMENC);
 
 static void
 gst_gsmenc_class_init (GstGSMEncClass * klass)

ext/gsm/gstgsmenc.h

@@ -59,6 +59,8 @@ struct _GstGSMEncClass
 
 GType gst_gsmenc_get_type (void);
 
+GST_ELEMENT_REGISTER_DECLARE (gsmenc);
+
 G_END_DECLS
 
 #endif /* __GST_GSMENC_H__ */