view efrtest/dec-parse.c @ 174:d284f2ac087d

doc/Utils-overview: new RTP utils
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 27 Dec 2022 00:02:28 +0000
parents 95d47a34070a
children 46a6e6b6841a
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/*
 * This program reads an EFR *.dec file in ETSI test sequence format
 * (test input to the decoder) and converts it into human-readable format,
 * similar to what one would get from our gsmrec-dump utility.
 */

#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;
	FILE *inf;
	int big_endian;
	unsigned frame_no;
	uint8_t input_bits[ETSI_DEC_NWORDS], frame[EFR_RTP_FRAME_LEN];
	int16_t params[EFR_NUM_PARAMS];
	int rc, i, j, n;

	if (argc == 2 && argv[1][0] != '-') {
		big_endian = 0;
		infname = argv[1];
	} else if (argc == 3 && !strcmp(argv[1], "-b")) {
		big_endian = 1;
		infname = argv[2];
	} else {
		fprintf(stderr, "usage: %s [-b] file.dec\n", argv[0]);
		exit(1);
	}
	inf = fopen(infname, "r");
	if (!inf) {
		perror(infname);
		exit(1);
	}
	for (frame_no = 0; ; frame_no++) {
		rc = read_etsi_bits(inf, big_endian, input_bits,
				    ETSI_DEC_NWORDS, infname);
		if (!rc)
			break;
		bits2frame(input_bits + 1, frame, infname, frame_no);
		printf("#%u: BFI=%u SID=%u TAF=%u LPC", frame_no,
			input_bits[0], input_bits[245], input_bits[246]);
		EFR_frame2params(frame, params);
		n = 0;
		for (i = 0; i < 5; i++)
			printf(" %d", params[n++]);
		putchar('\n');
		for (i = 0; i < 4; i++) {
			putchar(' ');
			for (j = 0; j < 13; j++)
				printf(" %d", params[n++]);
			putchar('\n');
		}
	}
}