--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hrutil/cod2hex.c	Thu Feb 06 08:38:27 2025 +0000
@@ -0,0 +1,64 @@
+/*
+ * This program reads an HRv1 *.cod file in ETSI test sequence format
+ * (encoder output format) and converts it into TW-TS-005 Annex B
+ * hexadecimal format.
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <strings.h>
+#include <unistd.h>
+#include "../libgsmhr1/tw_gsmhr.h"
+
+main(argc, argv)
+	char **argv;
+{
+	char *infname, *outfname;
+	FILE *inf, *outf;
+	int opt, rc, big_endian = 0, emit_5993 = 0;
+	unsigned frame_no;
+	int16_t params[GSMHR_NUM_PARAMS_ENC];
+	extern int optind;
+
+	while ((opt = getopt(argc, argv, "bx")) != EOF) {
+		switch (opt) {
+		case 'b':
+			big_endian = 1;
+			continue;
+		case 'x':
+			emit_5993 = 1;
+			continue;
+		default:
+		usage:
+			fprintf(stderr,
+				"usage: %s [-b] [-x] input.cod output.hex\n",
+				argv[0]);
+			exit(1);
+		}
+	}
+	if (argc != optind + 2)
+		goto usage;
+	infname = argv[optind];
+	outfname = argv[optind+1];
+
+	inf = fopen(infname, "r");
+	if (!inf) {
+		perror(infname);
+		exit(1);
+	}
+	outf = fopen(outfname, "w");
+	if (!outf) {
+		perror(outfname);
+		exit(1);
+	}
+
+	for (frame_no = 0; ; frame_no++) {
+		rc = read_cod_frame(inf, big_endian, params, infname, frame_no);
+		if (!rc)
+			break;
+		emit_cod_to_tw5b(outf, params, emit_5993);
+	}
+	exit(0);
+}