--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libtwamr/vad.h	Tue May 07 02:06:47 2024 +0000
@@ -0,0 +1,26 @@
+/*
+ * In the original 3GPP code, the selection between VAD1 and VAD2 is made
+ * only at compile time.  In libtwamr we support run-time selection between
+ * these two VAD algorithms for tinkering and investigation work; this
+ * header file implements the logic that fits this run-time selection
+ * into the existing code structure from 3GPP.
+ */
+
+#ifndef	vad_h
+#define	vad_h
+
+#include "typedef.h"
+#include "vad1.h"
+#include "vad2.h"
+
+typedef struct {
+	Flag	use_vad2;
+	union {
+		vadState1	v1;
+		vadState2	v2;
+	} u;
+} vadState;
+
+void vad_reset(vadState *st, Flag use_vad2);
+
+#endif	/* include guard */