diff --git a/src/main.c b/src/main.c
index 3fba6cd4..a057ed6b 100644
--- a/src/main.c
+++ b/src/main.c
@@ -685,3 +685,17 @@ sri_to_rate(int sri)
 {
   return sample_rates[sri & 0xf];
 }
+
+
+/**
+ *
+ */
+void
+hexdump(const char *pfx, const uint8_t *data, int len)
+{
+  int i;
+  printf("%s: ", pfx);
+  for(i = 0; i < len; i++)
+    printf("%02x.", data[i]);
+  printf("\n");
+}
diff --git a/src/tvhead.h b/src/tvhead.h
index edff3426..71a166f2 100644
--- a/src/tvhead.h
+++ b/src/tvhead.h
@@ -837,4 +837,6 @@ int tvh_open(const char *pathname, int flags, mode_t mode);
 
 int tvh_socket(int domain, int type, int protocol);
 
+void hexdump(const char *pfx, const uint8_t *data, int len);
+
 #endif /* TV_HEAD_H */