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/*
* Copyright (c) 2010, Wei Mingzhi <whistler@openoffice.org>.
* All Rights Reserved.
*
* Based on: Cdrom for Psemu Pro like Emulators
* By: linuzappz <linuzappz@hotmail.com>
*
* 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, see <http://www.gnu.org/licenses>.
*/
#include "cdr.h"
#ifdef __linux__
char *LibName = N_("CD-ROM Drive Reader");
static int handle = -1;
int OpenCdHandle(const char *dev) {
char spindown;
handle = open(dev, O_RDONLY);
if (handle != -1) {
ioctl(handle, CDROM_LOCKDOOR, 0);
// ioctl(handle, CDROMSTART, NULL);
spindown = (char)SpinDown;
ioctl(handle, CDROMSETSPINDOWN, &spindown);
ioctl(handle, CDROM_SELECT_SPEED, CdrSpeed);
}
return (handle == -1) ? -1 : 0;
}
void CloseCdHandle() {
char spindown = SPINDOWN_VENDOR_SPECIFIC;
ioctl(handle, CDROMSETSPINDOWN, &spindown);
close(handle);
handle = -1;
}
int IsCdHandleOpen() {
return (handle != -1);
}
long GetTN(unsigned char *buffer) {
struct cdrom_tochdr toc;
if (ioctl(handle, CDROMREADTOCHDR, &toc) == -1)
return -1;
buffer[0] = toc.cdth_trk0; // start track
buffer[1] = toc.cdth_trk1; // end track
return 0;
}
long GetTD(unsigned char track, unsigned char *buffer) {
struct cdrom_tocentry entry;
if (track == 0)
track = 0xaa; // total time
entry.cdte_track = track;
entry.cdte_format = CDROM_MSF;
if (ioctl(handle, CDROMREADTOCENTRY, &entry) == -1)
return -1;
buffer[0] = entry.cdte_addr.msf.frame; /* frame */
buffer[1] = entry.cdte_addr.msf.second; /* second */
buffer[2] = entry.cdte_addr.msf.minute; /* minute */
return 0;
}
long GetTE(unsigned char track, unsigned char *m, unsigned char *s, unsigned char *f) {
struct cdrom_tocentry entry;
char msf[3];
entry.cdte_track = track + 1;
entry.cdte_format = CDROM_MSF;
if (ioctl(handle, CDROMREADTOCENTRY, &entry) == -1)
return -1;
lba_to_msf(msf_to_lba(entry.cdte_addr.msf.minute, entry.cdte_addr.msf.second, entry.cdte_addr.msf.frame) - CD_MSF_OFFSET, msf);
*m = msf[0];
*s = msf[1];
*f = msf[2];
return 0;
}
long ReadSector(crdata *cr) {
if (ioctl(handle, CDROMREADRAW, cr) == -1)
return -1;
return 0;
}
long PlayCDDA(unsigned char *sector) {
struct cdrom_msf addr;
unsigned char ptmp[4];
// 0 is the last track of every cdrom, so play up to there
if (GetTD(0, ptmp) == -1)
return -1;
addr.cdmsf_min0 = sector[0];
addr.cdmsf_sec0 = sector[1];
addr.cdmsf_frame0 = sector[2];
addr.cdmsf_min1 = ptmp[2];
addr.cdmsf_sec1 = ptmp[1];
addr.cdmsf_frame1 = ptmp[0];
if (ioctl(handle, CDROMPLAYMSF, &addr) == -1)
return -1;
return 0;
}
long StopCDDA() {
struct cdrom_subchnl sc;
sc.cdsc_format = CDROM_MSF;
if (ioctl(handle, CDROMSUBCHNL, &sc) == -1)
return -1;
switch (sc.cdsc_audiostatus) {
case CDROM_AUDIO_PAUSED:
case CDROM_AUDIO_PLAY:
ioctl(handle, CDROMSTOP);
break;
}
return 0;
}
long GetStatus(int playing, struct CdrStat *stat) {
struct cdrom_subchnl sc;
int ret;
char spindown;
memset(stat, 0, sizeof(struct CdrStat));
if (playing) { // return Time only if playing
sc.cdsc_format = CDROM_MSF;
if (ioctl(handle, CDROMSUBCHNL, &sc) != -1)
memcpy(stat->Time, &sc.cdsc_absaddr.msf, 3);
}
ret = ioctl(handle, CDROM_DISC_STATUS);
switch (ret) {
case CDS_AUDIO:
stat->Type = 0x02;
break;
case CDS_DATA_1:
case CDS_DATA_2:
case CDS_XA_2_1:
case CDS_XA_2_2:
stat->Type = 0x01;
break;
}
ret = ioctl(handle, CDROM_DRIVE_STATUS);
switch (ret) {
case CDS_NO_DISC:
case CDS_TRAY_OPEN:
stat->Type = 0xff;
stat->Status |= 0x10;
break;
default:
spindown = (char)SpinDown;
ioctl(handle, CDROMSETSPINDOWN, &spindown);
ioctl(handle, CDROM_LOCKDOOR, 0);
break;
}
switch (sc.cdsc_audiostatus) {
case CDROM_AUDIO_PLAY:
stat->Status |= 0x80;
break;
}
return 0;
}
unsigned char *ReadSub(const unsigned char *time) {
static struct SubQ subq;
struct cdrom_subchnl subchnl;
int ret;
crdata cr;
cr.msf.cdmsf_min0 = btoi(time[0]);
cr.msf.cdmsf_sec0 = btoi(time[1]);
cr.msf.cdmsf_frame0 = btoi(time[2]);
if (ioctl(handle, CDROMSEEK, &cr.msf) == -1) {
// will be slower, but there's no other way to make it accurate
if (ioctl(handle, CDROMREADRAW, &cr) == -1) {
return NULL;
}
}
subchnl.cdsc_format = CDROM_MSF;
ret = ioctl(handle, CDROMSUBCHNL, &subchnl);
if (ret == -1) return NULL;
subq.TrackNumber = subchnl.cdsc_trk;
subq.IndexNumber = subchnl.cdsc_ind;
subq.TrackRelativeAddress[0] = itob(subchnl.cdsc_reladdr.msf.minute);
subq.TrackRelativeAddress[1] = itob(subchnl.cdsc_reladdr.msf.second);
subq.TrackRelativeAddress[2] = itob(subchnl.cdsc_reladdr.msf.frame);
subq.AbsoluteAddress[0] = itob(subchnl.cdsc_absaddr.msf.minute);
subq.AbsoluteAddress[1] = itob(subchnl.cdsc_absaddr.msf.second);
subq.AbsoluteAddress[2] = itob(subchnl.cdsc_absaddr.msf.frame);
PRINTF("subq : %x,%x : %x,%x,%x : %x,%x,%x\n",
subchnl.cdsc_trk, subchnl.cdsc_ind,
itob(subchnl.cdsc_reladdr.msf.minute), itob(subchnl.cdsc_reladdr.msf.second), itob(subchnl.cdsc_reladdr.msf.frame),
itob(subchnl.cdsc_absaddr.msf.minute), itob(subchnl.cdsc_absaddr.msf.second), itob(subchnl.cdsc_absaddr.msf.frame));
return (unsigned char *)&subq;
}
#endif
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