view dev/mk-256bytes.c @ 605:63f774192906

gsmhr_decoder_twts002_in(): set BFI=1 SID=1 for invalid SID When a received TW-TS-002 RTP payload indicates invalid SID, which of the 3 possible BFI/SID combinations should we pass to our internal ETSI-based speech decoder or TFO engine? Our original code passed BFI=0 SID=1, but upon further reflection, BFI=1 SID=1 is a better choice. In the corner case where received invalid SID is fed to a full decoder in homed state, setting BFI=1 allows that decoder to emit zeros on PCM and stay homed, instead of launching into full decoding.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 04 Dec 2025 21:01:46 +0000
parents bbdefd2ef950
children
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/*
 * This program generates a binary file of 256 bytes, containing every
 * possible octet value in linearly increasing order.  The purpose of this
 * datum is testing of A-linear-A and mu-linear-mu PCM conversions: we need
 * to ensure that each of those sequences is an identity transform for all
 * possible PCM octet values.
 */

#include <stdio.h>
#include <stdlib.h>

main(argc, argv)
	char **argv;
{
	FILE *outf;
	unsigned val;

	if (argc != 2) {
		fprintf(stderr, "usage: %s output-bin-file\n", argv[0]);
		exit(1);
	}
	outf = fopen(argv[1], "w");
	if (!outf) {
		perror(argv[1]);
		exit(1);
	}
	for (val = 0; val < 256; val++)
		putc(val, outf);
	fclose(outf);
	exit(0);
}