1 files changed, 15 insertions, 0 deletions
diff --git a/gr-uhd/lib/gr_uhd_common.h b/gr-uhd/lib/gr_uhd_common.h
index f2433b288..2582cd68d 100644
--- a/gr-uhd/lib/gr_uhd_common.h
+++ b/gr-uhd/lib/gr_uhd_common.h
@@ -39,4 +39,19 @@ static inline void gr_uhd_check_abi(void){
     #endif
 }
 
+/*!
+ * The stream args ensure function sanitizes random user input.
+ * We may extend this to handle more things in the future,
+ * but ATM it ensures that the channels are initialized.
+ */
+static inline uhd::stream_args_t stream_args_ensure(const uhd::stream_args_t &args)
+{
+    uhd::stream_args_t sanitized = args;
+    if (sanitized.channels.empty())
+    {
+        sanitized.channels.push_back(0);
+    }
+    return sanitized;
+}
+
 #endif /* INCLUDED_GR_UHD_COMMON_H */