--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/amrtest/mode_file.c	Tue May 07 06:27:20 2024 +0000
@@ -0,0 +1,55 @@
+/*
+ * The functions in this module implement reading per-frame encoder mode
+ * instructions from a file, as in 3GPP test sequences and code.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <strings.h>
+#include "../libtwamr/tw_amr.h"
+
+static FILE *mode_file;
+static int lineno;
+static char *filename_for_errs;
+
+void
+open_mode_file(filename)
+	char *filename;
+{
+	mode_file = fopen(filename, "r");
+	if (!mode_file) {
+		perror(filename);
+		exit(1);
+	}
+}
+
+void
+read_mode_file_line(mode_out)
+	enum Mode *mode_out;
+{
+	char linebuf[16], *cp;
+	int rc;
+
+	if (!fgets(linebuf, sizeof linebuf, mode_file)) {
+		fprintf(stderr, "error: %s ends before speech input\n",
+			filename_for_errs);
+		exit(1);
+	}
+	lineno++;
+	cp = index(linebuf, '\n');
+	if (!cp) {
+		fprintf(stderr, "%s line %d: too long or missing newline\n",
+			filename_for_errs, lineno);
+		exit(1);
+	}
+	if (cp > linebuf && cp[-1] == '\r')
+		cp--;
+	*cp = '\0';
+	rc = grok_mode_name(linebuf, mode_out);
+	if (rc < 0) {
+		fprintf(stderr, "%s line %d: invalid mode setting\n",
+			filename_for_errs, lineno);
+		exit(1);
+	}
+}