--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libgsmhr1/twts002_out.c	Mon Jun 17 23:00:57 2024 +0000
@@ -0,0 +1,14 @@
+/*
+ * The function implemented in this module converts the output of HRv1
+ * speech encoder into an RTP payload per TW-TS-002, which in this
+ * particular case is also a valid RFC 5993 payload.
+ */
+
+#include <stdint.h>
+#include "tw_gsmhr.h"
+
+void gsmhr_encoder_twts002_out(const int16_t *params, uint8_t *payload)
+{
+	payload[0] = params[19] ? 0x00 : 0x20;
+	gsmhr_pack_ts101318(params, payload + 1);
+}