/*
 * This program reads a TW-TS-005 Annex B hexadecimal file and converts it
 * to ETSI *.dec GSM-HR decoder input format.
 */

#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <unistd.h>
#include "../libgsmhr1/tw_gsmhr.h"
#include "../libtest/tw5reader.h"

main(argc, argv)
	char **argv;
{
	char *infname, *outfname;
	FILE *inf, *outf;
	int opt, rc, allow_bfi_nodata = 0;
	unsigned lineno;
	uint8_t frame[TWTS005_MAX_FRAME];
	unsigned frame_len;
	int16_t params[GSMHR_NUM_PARAMS_DEC];
	extern int optind;

	while ((opt = getopt(argc, argv, "f")) != EOF) {
		switch (opt) {
		case 'f':
			allow_bfi_nodata = 1;
			continue;
		default:
		usage:
			fprintf(stderr, "usage: %s [-f] input.hex output.dec\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);
	}

	lineno = 0;
	for (;;) {
		rc = twts005_read_frame(inf, &lineno, frame, &frame_len);
		if (rc < 0) {
			fprintf(stderr, "%s line %u: not valid TW-TS-005\n",
				infname, lineno);
			exit(1);
		}
		if (!rc)
			break;
		rc = gsmhr_rtp_in_direct(frame, frame_len, params);
		if (rc < 0) {
			fprintf(stderr,
				"%s line %u: not a valid GSM-HR frame\n",
				infname, lineno);
			exit(1);
		}
		if (params[18] == 2 && !allow_bfi_nodata) {
			fprintf(stderr, "%s line %u: BFI-no-data not allowed\n",
				infname, lineno);
			exit(1);
		}
		fwrite(params, 2, GSMHR_NUM_PARAMS_DEC, outf);
	}
	exit(0);
}