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/* @(#)cd_misc.c 1.6 98/10/09 Copyright 1997 J. Schilling */
#ifndef lint
static char sccsid[] =
"@(#)cd_misc.c 1.6 98/10/09 Copyright 1997 J. Schilling";
#endif
/*
* Misc CD support routines
*
* Copyright (c) 1997 J. Schilling
*/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <mconfig.h>
#include <standard.h>
#include <sys/types.h> /* for caddr_t */
#include <utypes.h>
#include "cdrecord.h"
EXPORT int from_bcd __PR((int b));
EXPORT int to_bcd __PR((int i));
EXPORT long msf_to_lba __PR((int m, int s, int f));
EXPORT BOOL lba_to_msf __PR((long lba, msf_t *mp));
EXPORT void print_min_atip __PR((long li, long lo));
EXPORT int
from_bcd(b)
int b;
{
return ((b & 0x0F) + 10 * (((b)>> 4) & 0x0F));
}
EXPORT int
to_bcd(i)
int i;
{
return (i % 10 | ((i / 10) % 10) << 4);
}
EXPORT long
msf_to_lba(m, s, f)
int m;
int s;
int f;
{
long ret = m * 60 + s;
ret *= 75;
ret += f;
if (m < 90)
ret -= 150;
else
ret -= 450150;
return (ret);
}
EXPORT BOOL
lba_to_msf(lba, mp)
long lba;
msf_t *mp;
{
int m;
int s;
int f;
if (lba >= -150 && lba < 405000) { /* lba <= 404849 */
m = (lba + 150) / 60 / 75;
s = (lba + 150 - m*60*75) / 75;
f = (lba + 150 - m*60*75 - s*75);
} else if (lba >= -45150 && lba <= -151) {
m = (lba + 450150) / 60 / 75;
s = (lba + 450150 - m*60*75) / 75;
f = (lba + 450150 - m*60*75 - s*75);
} else {
mp->msf_min = -1;
mp->msf_sec = -1;
mp->msf_frame = -1;
return (FALSE);
}
mp->msf_min = m;
mp->msf_sec = s;
mp->msf_frame = f;
if (lba > 404849) /* 404850 -> 404999: lead out */
return (FALSE);
return (TRUE);
}
EXPORT void
print_min_atip(li, lo)
long li;
long lo;
{
msf_t msf;
if (li < 0) {
lba_to_msf(li, &msf);
printf(" ATIP start of lead in: %ld (%02d:%02d/%02d)\n",
li, msf.msf_min, msf.msf_sec, msf.msf_frame);
}
if (lo > 0) {
lba_to_msf(lo, &msf);
printf(" ATIP start of lead out: %ld (%02d:%02d/%02d)\n",
lo, msf.msf_min, msf.msf_sec, msf.msf_frame);
}
}
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