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/* --------------------------------------------------------------------------
MusicBrainz -- The Internet music metadatabase
Copyright (C) 2008 Patrick Hurrelmann
Copyright (C) 2006 Matthias Friedrich
Copyright (C) 2000 Robert Kaye
Copyright (C) 1999 Marc E E van Woerkom
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
--------------------------------------------------------------------------- */
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/cdio.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <unistd.h>
#if defined(__FreeBSD__)
#include <netinet/in.h> /* for ntohl() */
#else
#include <util.h> /* for getrawpartition() */
#endif
#include "discid/discid_private.h"
#include "unix.h"
#define MAX_DEV_LEN 15
static int get_device(int n, char* device_name, size_t device_name_length) {
#if !defined(__FreeBSD__) /* /dev/rcdNX, where X is the letter for the raw partition */
snprintf(device_name, device_name_length, "/dev/rcd%d%c", n - 1, 'a' + getrawpartition());
#else /* on FreeBSD it's just /dev/cdN */
snprintf(device_name, device_name_length, "/dev/cd%d", n - 1);
#endif
return mb_disc_unix_exists(device_name);
}
int mb_disc_unix_read_toc_header(int fd, mb_disc_toc *toc) {
struct ioc_toc_header th;
struct cd_toc_entry te[100];
struct ioc_read_toc_entry rte;
int i;
memset(&th, 0, sizeof th);
if (ioctl(fd, CDIOREADTOCHEADER, &th) < 0)
return 0; /* error */
toc->first_track_num = th.starting_track;
toc->last_track_num = th.ending_track;
if (toc->last_track_num == 0)
return 1; /* no entries to read */
/* Read all the TOC entries in one icotl() call */
memset(&te, 0, sizeof te);
memset(&rte, 0, sizeof rte);
rte.address_format = CD_LBA_FORMAT;
rte.data = &te[0];
rte.data_len = sizeof te;
rte.starting_track = toc->first_track_num;
if (ioctl(fd, CDIOREADTOCENTRYS, &rte) < 0)
return 0; /* error */
for (i = toc->first_track_num; i <= toc->last_track_num; ++i) {
assert(te[i - toc->first_track_num].track == i);
#if defined(__FreeBSD__) /* LBA address is in network byte order */
toc->tracks[i].address = ntohl(te[i - toc->first_track_num].addr.lba);
#else
toc->tracks[i].address = te[i - toc->first_track_num].addr.lba;
#endif
toc->tracks[i].control = te[i - toc->first_track_num].control;
}
/* leadout - track number 170 (0xAA) */
assert(te[i - toc->first_track_num].track == 0xAA);
#if defined(__FreeBSD__) /* LBA address is in network byte order */
toc->tracks[0].address = ntohl(te[i - toc->first_track_num].addr.lba);
#else
toc->tracks[0].address = te[i - toc->first_track_num].addr.lba;
#endif
toc->tracks[0].control = te[i - toc->first_track_num].control;
return 1;
}
int mb_disc_unix_read_toc_entry(int fd, int track_num, mb_disc_toc_track *track) {
/* All TOC entries were already read by mb_disc_unix_read_toc_header() */
return 1;
}
void mb_disc_unix_read_mcn(int fd, mb_disc_private *disc) {
struct cd_sub_channel_info sci;
struct ioc_read_subchannel rsc;
memset(&sci, 0, sizeof sci);
memset(&rsc, 0, sizeof rsc);
rsc.address_format = CD_LBA_FORMAT; /* not technically relevant */
rsc.data_format = CD_MEDIA_CATALOG;
rsc.data_len = sizeof sci;
rsc.data = &sci;
if ( ioctl(fd, CDIOCREADSUBCHANNEL, &rsc) < 0 )
perror ("Warning: Unable to read the disc's media catalog number");
else {
if (sci.what.media_catalog.mc_valid)
strncpy( disc->mcn,
(const char *) sci.what.media_catalog.mc_number,
MCN_STR_LENGTH );
else
memset( disc->mcn, 0, MCN_STR_LENGTH );
}
}
void mb_disc_unix_read_isrc(int fd, mb_disc_private *disc, int track_num) {
struct cd_sub_channel_info sci;
struct ioc_read_subchannel rsc;
memset(&sci, 0, sizeof sci);
memset(&rsc, 0, sizeof rsc);
rsc.address_format = CD_LBA_FORMAT; /* not technically relevant */
rsc.data_format = CD_TRACK_INFO;
rsc.track = track_num;
rsc.data_len = sizeof sci;
rsc.data = &sci;
if ( ioctl(fd, CDIOCREADSUBCHANNEL, &rsc) < 0 )
perror ("Warning: Unable to read track info (ISRC)");
else {
if (sci.what.track_info.ti_valid)
strncpy( disc->isrc[track_num],
(const char *) sci.what.track_info.ti_number,
ISRC_STR_LENGTH );
else
memset( disc->isrc[track_num], 0, ISRC_STR_LENGTH );
}
}
int mb_disc_has_feature_unportable(enum discid_feature feature) {
switch(feature) {
case DISCID_FEATURE_READ:
case DISCID_FEATURE_MCN:
case DISCID_FEATURE_ISRC:
return 1;
default:
return 0;
}
}
int mb_disc_read_unportable(mb_disc_private *disc, const char *device,
unsigned int features) {
char device_name[MAX_DEV_LEN] = "";
int device_number;
device_number = (int) strtol(device, NULL, 10);
if (device_number > 0) {
if(!get_device(device_number, device_name, MAX_DEV_LEN)) {
snprintf(disc->error_msg, MB_ERROR_MSG_LENGTH,
"cannot find cd device with the number '%d'",
device_number);
return 0; /* error */
}
device = device_name;
}
return mb_disc_unix_read(disc, device, features);
}
char *mb_disc_get_default_device_unportable(void) {
static char result[MAX_DEV_LEN + 1];
/* No error check here, so we always return the appropriate device for cd0 */
get_device(1, result, sizeof result);
return result;
}
/* EOF */
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