view pcmu2efr/pcmu-input.c @ 26:1794bf0fbcf7

pcmu2efr: emit full PCMU input
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 12 May 2024 04:48:36 +0000
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/*
 * 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);
}