2012-01-31 01:40:22 +00:00
|
|
|
|
/*
|
2012-11-04 01:33:54 +00:00
|
|
|
|
Copyright (C) 2004, 2005, 2011, 2012 Rocky Bernstein <rocky@gnu.org>
|
2012-01-31 01:40:22 +00:00
|
|
|
|
Copyright (C) 2000 Herbert Valerio Riedel <hvr@gnu.org>
|
|
|
|
|
|
|
|
|
|
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 of the License, 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; if not, write to the Free Software
|
|
|
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
|
|
|
# include "config.h"
|
|
|
|
|
# define __CDIO_CONFIG_H__ 1
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
#include <cdio/sector.h>
|
|
|
|
|
#include <cdio/util.h>
|
|
|
|
|
#include <cdio/logging.h>
|
|
|
|
|
#include "cdio_assert.h"
|
|
|
|
|
#include "portable.h"
|
|
|
|
|
|
|
|
|
|
#ifdef HAVE_STDIO_H
|
|
|
|
|
#include <stdio.h>
|
|
|
|
|
#endif
|
|
|
|
|
#ifdef HAVE_STRING_H
|
|
|
|
|
#include <string.h>
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
#include <ctype.h>
|
|
|
|
|
|
|
|
|
|
static const char _rcsid[] = "$Id: sector.c,v 1.5 2005/02/06 04:20:25 rocky Exp $";
|
|
|
|
|
|
|
|
|
|
/*! String of bytes used to identify the beginning of a Mode 1 or
|
|
|
|
|
Mode 2 sector. */
|
|
|
|
|
const uint8_t CDIO_SECTOR_SYNC_HEADER[CDIO_CD_SYNC_SIZE] =
|
|
|
|
|
{0, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0};
|
|
|
|
|
|
|
|
|
|
/* Variables to hold debugger-helping enumerations */
|
|
|
|
|
enum cdio_cd_enums;
|
|
|
|
|
enum m2_sector_enums;
|
|
|
|
|
|
|
|
|
|
lba_t
|
|
|
|
|
cdio_lba_to_lsn (lba_t lba)
|
|
|
|
|
{
|
|
|
|
|
if (CDIO_INVALID_LBA == lba) return CDIO_INVALID_LSN;
|
|
|
|
|
return lba - CDIO_PREGAP_SECTORS;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
The below is adapted from cdparanoia code which claims it is
|
|
|
|
|
straight from the MMC3 spec.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
cdio_lsn_to_msf (lsn_t lsn, msf_t *msf)
|
|
|
|
|
{
|
|
|
|
|
int m, s, f;
|
|
|
|
|
|
|
|
|
|
cdio_assert (msf != 0);
|
|
|
|
|
|
|
|
|
|
if ( lsn >= -CDIO_PREGAP_SECTORS ){
|
|
|
|
|
m = (lsn + CDIO_PREGAP_SECTORS) / CDIO_CD_FRAMES_PER_MIN;
|
|
|
|
|
lsn -= m * CDIO_CD_FRAMES_PER_MIN;
|
|
|
|
|
s = (lsn + CDIO_PREGAP_SECTORS) / CDIO_CD_FRAMES_PER_SEC;
|
|
|
|
|
lsn -= s * CDIO_CD_FRAMES_PER_SEC;
|
|
|
|
|
f = lsn + CDIO_PREGAP_SECTORS;
|
|
|
|
|
} else {
|
|
|
|
|
m = (lsn + CDIO_CD_MAX_LSN) / CDIO_CD_FRAMES_PER_MIN;
|
|
|
|
|
lsn -= m * (CDIO_CD_FRAMES_PER_MIN);
|
|
|
|
|
s = (lsn+CDIO_CD_MAX_LSN) / CDIO_CD_FRAMES_PER_SEC;
|
|
|
|
|
lsn -= s * CDIO_CD_FRAMES_PER_SEC;
|
|
|
|
|
f = lsn + CDIO_CD_MAX_LSN;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (m > 99) {
|
|
|
|
|
cdio_warn ("number of minutes (%d) truncated to 99.", m);
|
|
|
|
|
m = 99;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
msf->m = cdio_to_bcd8 (m);
|
|
|
|
|
msf->s = cdio_to_bcd8 (s);
|
|
|
|
|
msf->f = cdio_to_bcd8 (f);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*!
|
|
|
|
|
Convert an LBA into a string representation of the MSF.
|
|
|
|
|
\warning cdio_lba_to_msf_str returns new allocated string */
|
|
|
|
|
char *
|
|
|
|
|
cdio_lba_to_msf_str (lba_t lba)
|
|
|
|
|
{
|
|
|
|
|
|
|
|
|
|
if (CDIO_INVALID_LBA == lba) {
|
|
|
|
|
return strdup("*INVALID");
|
|
|
|
|
} else {
|
|
|
|
|
msf_t msf;
|
|
|
|
|
msf.m = msf.s = msf.f = 0;
|
|
|
|
|
cdio_lba_to_msf (lba, &msf);
|
|
|
|
|
return cdio_msf_to_str(&msf);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*!
|
|
|
|
|
Convert an LSN into the corresponding LBA.
|
|
|
|
|
CDIO_INVALID_LBA is returned if there is an error.
|
|
|
|
|
*/
|
|
|
|
|
lba_t
|
|
|
|
|
cdio_lsn_to_lba (lsn_t lsn)
|
|
|
|
|
{
|
|
|
|
|
if (CDIO_INVALID_LSN == lsn) return CDIO_INVALID_LBA;
|
|
|
|
|
return lsn + CDIO_PREGAP_SECTORS;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*!
|
|
|
|
|
Convert an LBA into the corresponding MSF.
|
|
|
|
|
*/
|
|
|
|
|
void
|
|
|
|
|
cdio_lba_to_msf (lba_t lba, msf_t *msf)
|
|
|
|
|
{
|
|
|
|
|
cdio_assert (msf != 0);
|
|
|
|
|
cdio_lsn_to_msf(cdio_lba_to_lsn(lba), msf);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*!
|
|
|
|
|
Convert a MSF into the corresponding LBA.
|
|
|
|
|
CDIO_INVALID_LBA is returned if there is an error.
|
|
|
|
|
*/
|
|
|
|
|
lba_t
|
|
|
|
|
cdio_msf_to_lba (const msf_t *msf)
|
|
|
|
|
{
|
|
|
|
|
uint32_t lba = 0;
|
|
|
|
|
|
|
|
|
|
cdio_assert (msf != 0);
|
|
|
|
|
|
|
|
|
|
lba = cdio_from_bcd8 (msf->m);
|
|
|
|
|
lba *= CDIO_CD_SECS_PER_MIN;
|
|
|
|
|
|
|
|
|
|
lba += cdio_from_bcd8 (msf->s);
|
|
|
|
|
lba *= CDIO_CD_FRAMES_PER_SEC;
|
|
|
|
|
|
|
|
|
|
lba += cdio_from_bcd8 (msf->f);
|
|
|
|
|
|
|
|
|
|
return lba;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*!
|
|
|
|
|
Convert a MSF into the corresponding LSN.
|
|
|
|
|
CDIO_INVALID_LSN is returned if there is an error.
|
|
|
|
|
*/
|
|
|
|
|
lba_t
|
|
|
|
|
cdio_msf_to_lsn (const msf_t *msf)
|
|
|
|
|
{
|
|
|
|
|
return cdio_lba_to_lsn(cdio_msf_to_lba (msf));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*!
|
|
|
|
|
Convert an LBA into a string representation of the MSF.
|
|
|
|
|
\warning cdio_lba_to_msf_str returns new allocated string */
|
|
|
|
|
char *
|
|
|
|
|
cdio_msf_to_str (const msf_t *msf)
|
|
|
|
|
{
|
|
|
|
|
char buf[16];
|
|
|
|
|
|
|
|
|
|
snprintf (buf, sizeof (buf), "%2.2x:%2.2x:%2.2x", msf->m, msf->s, msf->f);
|
|
|
|
|
return strdup (buf);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*!
|
|
|
|
|
Convert a MSF - broken out as 3 integer components into the
|
|
|
|
|
corresponding LBA.
|
|
|
|
|
CDIO_INVALID_LBA is returned if there is an error.
|
|
|
|
|
*/
|
|
|
|
|
lba_t
|
|
|
|
|
cdio_msf3_to_lba (unsigned int minutes, unsigned int seconds,
|
|
|
|
|
unsigned int frames)
|
|
|
|
|
{
|
|
|
|
|
return ((minutes * CDIO_CD_SECS_PER_MIN + seconds) * CDIO_CD_FRAMES_PER_SEC
|
|
|
|
|
+ frames);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*!
|
|
|
|
|
Convert a string of the form MM:SS:FF into the corresponding LBA.
|
|
|
|
|
CDIO_INVALID_LBA is returned if there is an error.
|
|
|
|
|
*/
|
|
|
|
|
lba_t
|
|
|
|
|
cdio_mmssff_to_lba (const char *psz_mmssff)
|
|
|
|
|
{
|
|
|
|
|
int psz_field;
|
|
|
|
|
lba_t ret;
|
2012-11-04 01:33:54 +00:00
|
|
|
|
unsigned char c;
|
2012-01-31 01:40:22 +00:00
|
|
|
|
|
|
|
|
|
if (0 == strcmp (psz_mmssff, "0"))
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
c = *psz_mmssff++;
|
|
|
|
|
if(c >= '0' && c <= '9')
|
|
|
|
|
psz_field = (c - '0');
|
|
|
|
|
else
|
|
|
|
|
return CDIO_INVALID_LBA;
|
|
|
|
|
while(':' != (c = *psz_mmssff++)) {
|
|
|
|
|
if(c >= '0' && c <= '9')
|
|
|
|
|
psz_field = psz_field * 10 + (c - '0');
|
|
|
|
|
else
|
|
|
|
|
return CDIO_INVALID_LBA;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
ret = cdio_msf3_to_lba (psz_field, 0, 0);
|
|
|
|
|
|
|
|
|
|
c = *psz_mmssff++;
|
|
|
|
|
if(c >= '0' && c <= '9')
|
|
|
|
|
psz_field = (c - '0');
|
|
|
|
|
else
|
|
|
|
|
return CDIO_INVALID_LBA;
|
|
|
|
|
if(':' != (c = *psz_mmssff++)) {
|
|
|
|
|
if(c >= '0' && c <= '9') {
|
|
|
|
|
psz_field = psz_field * 10 + (c - '0');
|
|
|
|
|
c = *psz_mmssff++;
|
|
|
|
|
if(c != ':')
|
|
|
|
|
return CDIO_INVALID_LBA;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
return CDIO_INVALID_LBA;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if(psz_field >= CDIO_CD_SECS_PER_MIN)
|
|
|
|
|
return CDIO_INVALID_LBA;
|
|
|
|
|
|
|
|
|
|
ret += cdio_msf3_to_lba (0, psz_field, 0);
|
|
|
|
|
|
|
|
|
|
c = *psz_mmssff++;
|
|
|
|
|
if (isdigit(c))
|
|
|
|
|
psz_field = (c - '0');
|
|
|
|
|
else
|
|
|
|
|
return -1;
|
|
|
|
|
if('\0' != (c = *psz_mmssff++)) {
|
|
|
|
|
if (isdigit(c)) {
|
|
|
|
|
psz_field = psz_field * 10 + (c - '0');
|
|
|
|
|
c = *psz_mmssff++;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
return CDIO_INVALID_LBA;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if('\0' != c)
|
|
|
|
|
return CDIO_INVALID_LBA;
|
|
|
|
|
|
|
|
|
|
if(psz_field >= CDIO_CD_FRAMES_PER_SEC)
|
|
|
|
|
return CDIO_INVALID_LBA;
|
|
|
|
|
|
|
|
|
|
ret += psz_field;
|
|
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Local variables:
|
|
|
|
|
* c-file-style: "gnu"
|
|
|
|
|
* tab-width: 8
|
|
|
|
|
* indent-tabs-mode: nil
|
|
|
|
|
* End:
|
|
|
|
|
*/
|