/*
Copyright (C) 2005, 2008, 2013 Rocky Bernstein <rocky@gnu.org>
Copyright (C) 1998-2008 Monty xiphmont@mit.edu
derived from code (C) 1994-1996 Heiko Eissfeldt
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 3 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, see <http://www.gnu.org/licenses/>.
*/
/******************************************************************
* Table of contents convenience functions
******************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
# define __CDIO_CONFIG_H__ 1
#endif
#include "low_interface.h"
#include "utils.h"
/*! Return the lsn for the start of track i_track or CDIO_LEADOUT_TRACK */
lsn_t
cdda_track_firstsector(cdrom_drive_t *d, track_t i_track)
{
if(!d->opened){
cderror(d,"400: Device not open\n");
return(-400);
} else {
const track_t i_first_track = cdio_get_first_track_num(d->p_cdio);
const track_t i_last_track =
cdio_get_last_track_num(d->p_cdio) + 1; /* include leadout */
if (i_track == CDIO_CDROM_LEADOUT_TRACK) i_track = i_last_track;
if (i_track == 0) {
if (d->disc_toc[0].dwStartSector == 0) {
/* first track starts at lba 0 -> no pre-gap */
cderror(d,"402: No initial pregap\n");
return(-402);
}
else {
return 0; /* pre-gap of first track always starts at lba 0 */
}
} else if (i_track < i_first_track || i_track > i_last_track) {
char buf[100];
snprintf(buf, sizeof(buf), "401: Invalid track number %02d\n", i_track);
cderror(d, buf);
return(-401);
}
return(d->disc_toc[i_track-i_first_track].dwStartSector);
}
}
/*! Get first lsn of the first audio track. -1 is returned on error. */
lsn_t
cdda_disc_firstsector(cdrom_drive_t *d)
{
int i;
if(!d->opened){
cderror(d,"400: Device not open\n");
return(-400);
}
/* look for an audio track */
for ( i=0; i<d->tracks; i++ )
if( cdda_track_audiop(d, i+1)==1 ) {
if (i == 0) /* disc starts at lba 0 if first track is an audio track */
return 0;
else
return cdda_track_firstsector(d, i+1);
}
cderror(d,"403: No audio tracks on disc\n");
return(-403);
}
/*! Get last lsn of the track. The lsn is generally one less than the
start of the next track. -1 is returned on error. */
lsn_t
cdda_track_lastsector(cdrom_drive_t *d, track_t i_track)
{
if(!d->opened){
cderror(d,"400: Device not open\n");
return(-400);
} else {
const track_t i_first_track = cdio_get_first_track_num(d->p_cdio);
const track_t i_last_track = cdio_get_last_track_num(d->p_cdio);
if (i_track == 0) {
if (d->disc_toc[0].dwStartSector == 0) {
/* first track starts at lba 0 -> no pre-gap */
cderror(d,"402: No initial pregap\n");
return(-402);
}
else {
return d->disc_toc[0].dwStartSector-1;
}
} else if (i_track < i_first_track || i_track > i_last_track) {
char buf[100];
snprintf(buf, sizeof(buf), "401: Invalid track number %02d\n", i_track);
cderror(d, buf);
return(-401);
}
/* CD Extra have their first session ending at the last audio track */
if (d->cd_extra > 0 && i_track-i_first_track+2 <= d->tracks) {
if (d->audio_last_sector >= d->disc_toc[i_track-i_first_track].dwStartSector &&
d->audio_last_sector < d->disc_toc[i_track-i_first_track+1].dwStartSector) {
return d->audio_last_sector;
}
}
/* Index safe because we always have the leadout at
* disc_toc[tracks] */
return(d->disc_toc[i_track-i_first_track+1].dwStartSector-1);
}
}
/*! Get last lsn of the last audio track. The last lssn generally one
less than the start of the next track after the audio track. -1 is
returned on error. */
lsn_t
cdda_disc_lastsector(cdrom_drive_t *d)
{
if (!d->opened) {
cderror(d,"400: Device not open\n");
return -400;
} else {
/* look for an audio track */
const track_t i_first_track = cdio_get_first_track_num(d->p_cdio);
track_t i = cdio_get_last_track_num(d->p_cdio);
for ( ; i >= i_first_track; i-- )
if ( cdda_track_audiop(d,i) )
return (cdda_track_lastsector(d,i));
}
cderror(d,"403: No audio tracks on disc\n");
return -403;
}
/*! Return the number of tracks on the or 300 if error. */
track_t
cdda_tracks(cdrom_drive_t *d)
{
if (!d->opened){
cderror(d,"400: Device not open\n");
return CDIO_INVALID_TRACK;
}
return(d->tracks);
}
/*! Return the track containing the given LSN. If the LSN is before
the first track (in the pregap), 0 is returned. If there was an
error or the LSN after the LEADOUT (beyond the end of the CD), then
CDIO_INVALID_TRACK is returned.
*/
int
cdda_sector_gettrack(cdrom_drive_t *d, lsn_t lsn)
{
if (!d->opened) {
cderror(d,"400: Device not open\n");
return CDIO_INVALID_TRACK;
} else {
if (lsn < d->disc_toc[0].dwStartSector)
return 0; /* We're in the pre-gap of first track */
return cdio_get_track(d->p_cdio, lsn);
}
}
/*! Return the number of channels in track: 2 or 4; -2 if not
implemented or -1 for error.
Not meaningful if track is not an audio track.
*/
int
cdda_track_channels(cdrom_drive_t *d, track_t i_track)
{
return(cdio_get_track_channels(d->p_cdio, i_track));
}
/*! Return 1 is track is an audio track, 0 otherwise. */
int
cdda_track_audiop(cdrom_drive_t *d, track_t i_track)
{
track_format_t track_format = cdio_get_track_format(d->p_cdio, i_track);
return TRACK_FORMAT_AUDIO == track_format ? 1 : 0;
}
/*! Return 1 is track is an audio track, 0 otherwise. */
int
cdda_track_copyp(cdrom_drive_t *d, track_t i_track)
{
track_flag_t track_flag = cdio_get_track_copy_permit(d->p_cdio, i_track);
return CDIO_TRACK_FLAG_TRUE == track_flag ? 1 : 0;
}
/*! Return 1 is audio track has linear preemphasis set, 0 otherwise.
Only makes sense for audio tracks.
*/
int
cdda_track_preemp(cdrom_drive_t *d, track_t i_track)
{
track_flag_t track_flag = cdio_get_track_preemphasis(d->p_cdio, i_track);
return CDIO_TRACK_FLAG_TRUE == track_flag ? 1 : 0;
}