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/* gstcdplay
* Copyright (c) 2002 Charles Schmidt <cbschmid@uiuc.edu>
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstcdplayer_ioctl.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <errno.h>
/* private functions */
static void cd_fix_track_range (struct cd *cd, gint * start_track,
gint * end_track);
static gint cddb_sum (gint n);
#if defined(HAVE_LINUX_CDROM_H)
#include <linux/cdrom.h>
#elif defined(HAVE_SYS_CDIO_H)
#include <sys/cdio.h>
/*
irix cdaudio works quite a bit differently than ioctl(), so its not ready
#elif defined(HAVE_DMEDIA_CDAUDIO_H)
#include <dmedia/cdaudio.h>
*/
#endif
/* these headers define low level functions:
gboolean cd_init(struct cd *cd,const gchar *device);
gboolean cd_start(struct cd *cd,gint start_track,gint end_track);
gboolean cd_pause(struct cd *cd);
gboolean cd_resume(struct cd *cd);
gboolean cd_stop(struct cd *cd);
CDStatus cd_status(struct cd *cd);
gint cd_current_track(struct cd *cd);
gboolean cd_close(struct cd *cd);
*/
#if defined(HAVE_CDROM_SOLARIS)
#include "gstcdplayer_ioctl_solaris.h"
#elif defined(HAVE_CDROM_BSD)
#include "gstcdplayer_ioctl_bsd.h"
/*
#elif defined(HAVE_CDROM_IRIX)
#include "gstcdplayer_ioctl_irix.h"
*/
#endif
static void
cd_fix_track_range (struct cd *cd, gint * start_track, gint * end_track)
{
if (*start_track <= 0) {
*start_track = 1;
}
if (*start_track > cd->num_tracks) {
*start_track = cd->num_tracks;
}
if (*end_track < *start_track && *end_track != LEADOUT) {
*end_track = *start_track;
}
if (*end_track > cd->num_tracks || *end_track + 1 > cd->num_tracks) {
*end_track = LEADOUT;
}
return;
}
/* this cddb info is from
http://www.freedb.org/modules.php?name=Sections&sop=viewarticle&artid=6
this will probably be of interest to anyone wishing to actually use the discid
http://www.freedb.org/modules.php?name=Sections&sop=viewarticle&artid=28
*/
static gint
cddb_sum (gint n)
{
gint ret = 0;
while (n > 0) {
ret += n % 10;
n /= 10;
}
return ret;
}
guint32
cd_cddb_discid (struct cd * cd)
{
guint i;
guint n = 0;
guint t;
for (i = 1; i <= cd->num_tracks; i++) {
n += cddb_sum (cd->tracks[i].minute * 60 + cd->tracks[i].second);
}
t = (cd->tracks[LEADOUT].minute * 60 + cd->tracks[LEADOUT].second) -
(cd->tracks[1].minute * 60 + cd->tracks[1].second);
return ((n % 0xff) << 24 | t << 8 | (cd->num_tracks));
}
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