diff options
Diffstat (limited to 'src/input/vcd/libcdio/sector.c')
-rw-r--r-- | src/input/vcd/libcdio/sector.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/src/input/vcd/libcdio/sector.c b/src/input/vcd/libcdio/sector.c new file mode 100644 index 000000000..24082bc2d --- /dev/null +++ b/src/input/vcd/libcdio/sector.c @@ -0,0 +1,111 @@ +/* + $Id: sector.c,v 1.1 2003/10/13 11:47:12 f1rmb Exp $ + + 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" +#endif + +#include <cdio/sector.h> +#include <cdio/util.h> +#include "cdio_assert.h" + +#include <stdio.h> +#ifdef HAVE_STRING_H +#include <string.h> +#endif + + +static const char _rcsid[] = "$Id: sector.c,v 1.1 2003/10/13 11:47:12 f1rmb Exp $"; + +lba_t +cdio_lba_to_lsn (lba_t lba) +{ + return lba - CDIO_PREGAP_SECTORS; +} + +void +cdio_lba_to_msf (lba_t lba, msf_t *msf) +{ + cdio_assert (msf != 0); + + msf->m = to_bcd8 (lba / (60 * 75)); + msf->s = to_bcd8 ((lba / 75) % 60); + msf->f = to_bcd8 (lba % 75); +} + +/* warning, returns new allocated string */ +char * +cdio_lba_to_msf_str (lba_t lba) +{ + char buf[16]; + msf_t _msf = { .m = 0, .s = 0, .f = 0 }; + + cdio_lba_to_msf (lba, &_msf); + + snprintf (buf, sizeof (buf), "%.2x:%.2x.%.2x", _msf.m, _msf.s, _msf.f); + + return strdup (buf); +} + +lba_t +cdio_lsn_to_lba (lsn_t lsn) +{ + return lsn + CDIO_PREGAP_SECTORS; +} + +void +cdio_lsn_to_msf (lsn_t lsn, msf_t *msf) +{ + cdio_assert (msf != 0); + cdio_lba_to_msf(cdio_lsn_to_lba(lsn), msf); +} + +uint32_t +cdio_msf_to_lba (const msf_t *msf) +{ + uint32_t lba = 0; + + cdio_assert (msf != 0); + + lba = from_bcd8 (msf->m); + lba *= 60; + + lba += from_bcd8 (msf->s); + lba *= 75; + + lba += from_bcd8 (msf->f); + + return lba; +} + +uint32_t +cdio_msf_to_lsn (const msf_t *msf) +{ + return cdio_lba_to_lsn(cdio_msf_to_lba (msf)); +} + + +/* + * Local variables: + * c-file-style: "gnu" + * tab-width: 8 + * indent-tabs-mode: nil + * End: + */ |