--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libtwamr/fr_type_conv.c	Tue May 07 22:15:23 2024 +0000
@@ -0,0 +1,40 @@
+/*
+ * The function implemented in this module converts from TXFrameType
+ * to RXFrameType.  It is needed for decoding standard test sequence
+ * .cod files, where TXFrameType is used in the file but RXFrameType
+ * is needed for decoding.
+ */
+
+#include "tw_amr.h"
+
+int amr_txtype_to_rxtype(enum TXFrameType tx_type, enum RXFrameType *rx_type)
+{
+	switch (tx_type) {
+	case TX_SPEECH_GOOD:
+		*rx_type = RX_SPEECH_GOOD;
+		return 0;
+	case TX_SPEECH_DEGRADED:
+		*rx_type = RX_SPEECH_DEGRADED;
+		return 0;
+	case TX_SPEECH_BAD:
+		*rx_type = RX_SPEECH_BAD;
+		return 0;
+	case TX_SID_FIRST:
+		*rx_type = RX_SID_FIRST;
+		return 0;
+	case TX_SID_UPDATE:
+		*rx_type = RX_SID_UPDATE;
+		return 0;
+	case TX_SID_BAD:
+		*rx_type = RX_SID_BAD;
+		return 0;
+	case TX_ONSET:
+		*rx_type = RX_ONSET;
+		return 0;
+	case TX_NO_DATA:
+		*rx_type = RX_NO_DATA;
+		return 0;
+	default:
+		return -1;
+	}
+}