/*
 * This program reads an EFR *.cod file in ETSI test sequence format
 * and converts it into Themyscira gsmx format.
 */

#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include "../libgsmefr/gsm_efr.h"
#include "etsi.h"

main(argc, argv)
	char **argv;
{
	char *infname, *outfname;
	FILE *inf, *outf;
	int big_endian;
	unsigned frame_no;
	uint8_t input_bits[ETSI_ENC_NWORDS], frame[EFR_RTP_FRAME_LEN];
	int rc;

	if (argc == 3 && argv[1][0] != '-') {
		big_endian = 0;
		infname = argv[1];
		outfname = argv[2];
	} else if (argc == 4 && !strcmp(argv[1], "-b")) {
		big_endian = 1;
		infname = argv[2];
		outfname = argv[3];
	} else {
		fprintf(stderr, "usage: %s [-b] input.cod output.gsmx\n",
			argv[0]);
		exit(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_etsi_bits(inf, big_endian, input_bits,
				    ETSI_ENC_NWORDS, infname);
		if (!rc)
			break;
		bits2frame(input_bits, frame, infname, frame_no);
		fwrite(frame, 1, sizeof frame, outf);
	}
	fclose(outf);
	exit(0);
}