--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/trau-ul-prep/gsmx2tsrc.c	Sun Jun 23 21:55:03 2024 +0000
@@ -0,0 +1,92 @@
+/*
+ * This program reads a binary file in ThemWi gsmx format
+ * and converts it into ASCII source for TRAU-UL construction.
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <strings.h>
+#include <tw_gsmfr.h>
+#include <gsm_efr.h>
+#include "binreader.h"
+
+main(argc, argv)
+	char **argv;
+{
+	FILE *binf, *outf;
+	unsigned frame_index;
+	uint8_t frame[BINFILE_MAX_FRAME];
+	int16_t params[GSMFR_NUM_PARAMS];
+	int rc, i, j, n;
+
+	if (argc < 2 || argc > 3) {
+		fprintf(stderr, "usage: %s input.gsmx [output.tsrc]\n",
+			argv[0]);
+		exit(1);
+	}
+	binf = fopen(argv[1], "r");
+	if (!binf) {
+		perror(argv[1]);
+		exit(1);
+	}
+	if (argc > 2) {
+		outf = fopen(argv[2], "w");
+		if (!outf) {
+			perror(argv[2]);
+			exit(1);
+		}
+	} else
+		outf = stdout;
+	for (frame_index = 0; ; frame_index++) {
+		rc = binfile_read_frame(binf, frame);
+		if (rc < 0) {
+			fprintf(stderr, "error: garbage in %s\n", argv[1]);
+			exit(1);
+		}
+		if (!rc)
+			break;
+		switch (frame[0] & 0xF0) {
+		case 0xB0:
+			fprintf(outf, "# input frame %u is BFI\n\n",
+				frame_index);
+			break;
+		case 0xC0:
+			fprintf(outf, "Frame_EFR {\t# input frame %u\n",
+				frame_index);
+			EFR_frame2params(frame, params);
+			n = 0;
+			fputs("\tLPC", outf);
+			for (i = 0; i < 5; i++)
+				fprintf(outf, " %d", params[n++]);
+			putc('\n', outf);
+			for (i = 0; i < 4; i++) {
+				fputs("\tsf", outf);
+				for (j = 0; j < 13; j++)
+					fprintf(outf, " %d", params[n++]);
+				putc('\n', outf);
+			}
+			fputs("}\n\n", outf);
+			break;
+		case 0xD0:
+			fprintf(outf, "Frame_FR {\t# input frame %u\n",
+				frame_index);
+			gsmfr_unpack_to_array(frame, params);
+			n = 0;
+			fputs("\tLARc", outf);
+			for (i = 0; i < 8; i++)
+				fprintf(outf, " %d", params[n++]);
+			putc('\n', outf);
+			for (i = 0; i < 4; i++) {
+				fputs("\tsf", outf);
+				for (j = 0; j < 17; j++)
+					fprintf(outf, " %d", params[n++]);
+				putc('\n', outf);
+			}
+			fputs("}\n\n", outf);
+			break;
+		}
+	}
+	exit(0);
+}