spu2-x: Added a define in to make it easy to disable the decoder code.

git-svn-id: http://pcsx2.googlecode.com/svn/trunk@3186 96395faa-99c1-11dd-bbfe-3dabce05a288

plugins/spu2-x/src/Decoder.cpp

@@ -16,8 +16,13 @@
 //Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 //
 
+// Commenting this will disable all the code in Decoder.cpp (which is the only code that uses liba52 in spu2-x.)
+#define ENABLE_DECODER
+
 #include "Global.h"
 
+#ifdef ENABLE_DECODER
+
 extern "C" {
 #include "liba52/inttypes.h"
 #include "liba52/a52.h"
@@ -381,3 +386,11 @@ void spdif_get_samples(s32*samples)
 		}
 	}
 }
+#else
+
+u32 spdif_init() { return 1; }
+void spdif_update() {}
+void spdif_shutdown() {}
+void spdif_set51(u32 is_5_1_out) {}
+
+#endif