view pcmu2efr/pcmu-input.c @ 55:f27bc1e17311

fr-sid/goodsp-frame41.gsmx: starting point This 33-byte binary file contains frame #41 from good_sp.cod from GSM 06.32 test sequence set, converted from ETSI *.cod format into our gsmx format. This frame is an example of a real FRv1 SID.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 22 Aug 2024 05:00:08 +0000
parents 1794bf0fbcf7
children
line wrap: on
line source

/*
 * This program emits the full sequence (3 EHFs and 2 copies of seqsyncu)
 * that needs to be fed to TRAU DL input from G.711 PCMU side to perform
 * the test of reversing the EFR variant used and finding frame sync.
 */

#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>

extern const uint8_t seqsyncu_last_frame[160];

main(argc, argv)
	char **argv;
{
	FILE *outf;
	uint8_t ehf[160];

	if (argc != 2) {
		fprintf(stderr, "usage: %s pcmu-out-file\n", argv[0]);
		exit(1);
	}
	outf = fopen(argv[1], "w");
	if (!outf) {
		perror(argv[1]);
		exit(1);
	}
	memset(ehf, 0xFE, 160);
	fwrite(ehf, 1, 160, outf);
	fwrite(ehf, 1, 160, outf);
	fwrite(ehf, 1, 160, outf);
	fwrite(seqsyncu_last_frame, 1, 160, outf);
	fwrite(seqsyncu_last_frame, 1, 160, outf);
	fclose(outf);
	exit(0);
}