view dev/efr-bit-packing.c @ 282:9ee8ad3d4d30

frtest: rm gsmfr-hand-test and gsmfr-max-out utils These hack programs were never properly documented and were written only as part of a debug chase, in pursuit of a bug that ultimately turned out to be in our then-hacky patch to osmo-bts-sysmo, before beginning of proper patches in Osmocom. These hack programs need to be dropped from the present sw package because they depend on old libgsm, and we are eliminating that dependency.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 14 Apr 2024 05:44:47 +0000
parents 9639a44ae2e7
children
line wrap: on
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/*
 * We would like to generate our EFR RTP frame packing and unpacking code
 * using bitter and sweet utilities from libgsm, so we'll end up packing
 * and unpacking EFR just like good old FR.  However, because of our
 * slightly different approach, entering the spec file for bitter and sweet
 * manually would be tedious and error-prone, hence we are going to
 * generate it with this program.
 */

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

#define	PRM_NO	57

/* table from ETSI EFR code */
static const unsigned bitno[PRM_NO] =
{
    7, 8, 9, 8, 6,                          /* LSP VQ          */
    9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 5,  /* first subframe  */
    6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 5,  /* second subframe */
    9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 5,  /* third subframe  */
    6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 5   /* fourth subframe */
};

main(argc, argv)
	char **argv;
{
	unsigned n;

	printf("EFR_MAGIC\t4\n");
	for (n = 0; n < PRM_NO; n++)
		printf("params[%u]\t%u\n", n, bitno[n]);
	exit(0);
}