view trau-decode/parse-fr-common.c @ 76:d4ee42801cdc

trau-decode: factor out parse-fr-common.c
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 08 Feb 2025 04:57:15 +0000
parents trau-decode/parse-main.c@f77a48a01ff0
children
line wrap: on
line source

/*
 * This module contains a bit of code that has been factored out of
 * trau-parse and tfo-parse-fr16 programs; it handles FR and EFR codecs.
 */

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

static void
collect_d_bits(frame_bits, d_bits)
	uint8_t *frame_bits, *d_bits;
{
	bcopy(frame_bits + 33, d_bits, 15);
	bcopy(frame_bits + 49, d_bits + 15, 15);
	bcopy(frame_bits + 65, d_bits + 30, 15);
	bcopy(frame_bits + 81, d_bits + 45, 15);
	bcopy(frame_bits + 97, d_bits + 60, 15);
	bcopy(frame_bits + 113, d_bits + 75, 15);
	bcopy(frame_bits + 129, d_bits + 90, 15);
	bcopy(frame_bits + 145, d_bits + 105, 15);
	bcopy(frame_bits + 161, d_bits + 120, 15);
	bcopy(frame_bits + 177, d_bits + 135, 15);
	bcopy(frame_bits + 193, d_bits + 150, 15);
	bcopy(frame_bits + 209, d_bits + 165, 15);
	bcopy(frame_bits + 225, d_bits + 180, 15);
	bcopy(frame_bits + 241, d_bits + 195, 15);
	bcopy(frame_bits + 257, d_bits + 210, 15);
	bcopy(frame_bits + 273, d_bits + 225, 15);
	bcopy(frame_bits + 289, d_bits + 240, 15);
	bcopy(frame_bits + 305, d_bits + 255, 5);
}

void
print_fr_efr_frame(frame_bits, c1_5)
	uint8_t *frame_bits;
	unsigned c1_5;
{
	uint8_t d_bits[260];

	switch (c1_5) {
	case 0x02:
	case 0x1C:
		collect_d_bits(frame_bits, d_bits);
		print_fr_frame(d_bits);
		break;
	case 0x1A:
		collect_d_bits(frame_bits, d_bits);
		check_efr_crc(d_bits);
		print_efr_frame(d_bits);
		break;
	}
}