--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libgsmhr1/sid_cw_params.c	Thu Feb 13 00:41:21 2025 +0000
@@ -0,0 +1,32 @@
+/*
+ * The function in this module fills parameters 4 through 17 of
+ * generated SID frames, setting them to the required SID codeword.
+ * It can also be used to transform a speech frame into a SID frame
+ * with the same R0 and LPC parameters.
+ */
+
+#include <stdint.h>
+#include "tw_gsmhr.h"
+
+void gsmhr_set_sid_cw_params(int16_t *params)
+{
+	/* Int_LPC and Mode */
+	params[4] = 1;
+	params[5] = 3;
+	/* subframe 1 */
+	params[6] = 0xFF;
+	params[7] = 0x1FF;
+	params[8] = 0x1F;
+	/* subframe 2 */
+	params[9] = 0xF;
+	params[10] = 0x1FF;
+	params[11] = 0x1F;
+	/* subframe 3 */
+	params[12] = 0xF;
+	params[13] = 0x1FF;
+	params[14] = 0x1F;
+	/* subframe 4 */
+	params[15] = 0xF;
+	params[16] = 0x1FF;
+	params[17] = 0x1F;
+}