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Sweden-Number/msdos/cdrom.c

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/*
* Cdrom - device driver emulation - Audio features.
* (c) 1998 Petr Tomasek <tomasek@etf.cuni.cz>
*
*/
#ifdef linux
#include "config.h"
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/types.h>
/* FIXME - how to make this OS independent ?? */
#ifdef HAVE_LINUX_CDROM_H
# include <linux/cdrom.h>
#endif
#ifdef HAVE_LINUX_UCDROM_H
# include <linux/ucdrom.h>
#endif
#include "ldt.h"
#include "drive.h"
#include "msdos.h"
#include "miscemu.h"
#include "module.h"
/* #define DEBUG_INT */
#include "debug.h"
/* FIXME - more general ?? */
#define cdrom_dev "/dev/cdrom"
u_char cdrom_a_status (int fd)
{
struct cdrom_subchnl sc;
ioctl(fd,CDROMSUBCHNL,&sc);
return sc.cdsc_audiostatus;
}
BYTE * get_io_stru (WORD * reqh,int dorealmode)
{
WORD ofst,segm;
BYTE * io_stru;
ofst = reqh[7]; segm = reqh[8];
if (dorealmode)
io_stru = DOSMEM_MapRealToLinear (MAKELONG(ofst,segm));
else
io_stru = PTR_SEG_OFF_TO_LIN(segm,ofst);
return io_stru;
}
DWORD msf0_to_abs (struct cdrom_msf0 msf)
{
return (msf.minute *60 +
msf.second) *75 +
msf.frame-150;
}
void abs_to_msf0 (DWORD abs, struct cdrom_msf0 * msf)
{
DWORD d;
d=abs+150;
msf->frame=d%75; d=d/75;
msf->second=d%60; msf->minute=d/60;
}
void msf0_to_msf (struct cdrom_msf0 from, struct cdrom_msf0 to, struct cdrom_msf * msf)
{
msf->cdmsf_min0=from.minute;
msf->cdmsf_min1=to.minute;
msf->cdmsf_sec0=from.second;
msf->cdmsf_sec1=to.second;
msf->cdmsf_frame0=from.frame;
msf->cdmsf_frame1=to.frame;
}
void abs_to_msf (DWORD from, DWORD to, struct cdrom_msf * msf)
{
struct cdrom_msf0 fr,tt;
abs_to_msf0(from, &fr);
abs_to_msf0(to, &tt);
msf0_to_msf(fr,tt,msf);
}
/************************************************************
*
* Cdrom ms-dos driver emulation.
* (accesible throught the MSCDEX 0x10 function.)
*/
extern void do_mscdex_dd (CONTEXT * context, int dorealmode)
{
BYTE * driver_request;
BYTE * io_stru;
static int fdcd=-1; /* file descriptor.. */
struct cdrom_tochdr tochdr; /* the Toc header */
struct cdrom_tocentry tocentry; /* a Toc entry */
struct cdrom_msf msf;
struct cdrom_subchnl subchnl;
u_char Error=255; /*No Error */
if (dorealmode)
driver_request=DOSMEM_MapRealToLinear
(MAKELONG(BX_reg(context),ES_reg(context)));
else
driver_request=PTR_SEG_OFF_TO_LIN(ES_reg(context),BX_reg(context));
if (!driver_request)
{ /* FIXME - to be deleted ?? */
ERR(int," ES:BX==0 ! SEGFAULT ?\n");
ERR(int," -->BX=0x%04x, ES=0x%04lx, DS=0x%04lx, CX=0x%04x\n\n",
BX_reg(context),
ES_reg(context),
DS_reg(context),
CX_reg(context));
}
else
/* FIXME - would be best to open the device at the begining of the wine
session .... */
if (fdcd<0) fdcd=open(cdrom_dev,O_RDONLY);
TRACE(int,"CDROM device driver -> command <%d>\n",
(unsigned char)driver_request[2]);
/* set status to 0 */
driver_request[3]=0;
driver_request[4]=0;
switch(driver_request[2])
{
case 3:
io_stru=get_io_stru((WORD *)driver_request,dorealmode);
FIXME(int," --> IOCTL INPUT <%d>\n",io_stru[0]);
switch (io_stru[0])
{
case 1: /* location of head */
if (io_stru[1]==0)
{
ioctl(fdcd,CDROMSUBCHNL,&subchnl);
((DWORD*)io_stru+2)[0]=(DWORD)msf0_to_abs(subchnl.cdsc_absaddr.msf);
FIXME(int," ----> HEAD LOCATION <%ld>\n\n",
((DWORD *)io_stru+2)[0]);
}
else
{
ERR(int,"CDRom-Driver: Unsupported address mode !!\n");
Error=0x0c;
}
break;
case 6: /* device status */
/* FIXME .. does this work properly ?? */
io_stru[3]=io_stru[4]=0;
io_stru[2]=1; /* supports audio channels (?? FIXME ??) */
io_stru[1]=16; /* data read and plays audio racks */
io_stru[1]|=(ioctl(fdcd,CDROM_DRIVE_STATUS,0)==CDS_TRAY_OPEN);
TRACE(int," ----> DEVICE STATUS <0x%08lx>\n\n",(DWORD)io_stru[1]);
break;
case 9: /* media changed ? */
if (ioctl(fdcd,CDROM_MEDIA_CHANGED,0))
io_stru[1]=0xff;
else
io_stru[0]=0; /* FIXME? 1? */
break;
case 10: /* audio disk info */
ioctl(fdcd,CDROMREADTOCHDR,&tochdr);
io_stru[1]=tochdr.cdth_trk0; /* staring track of the disc */
io_stru[2]=tochdr.cdth_trk1; /* ending track */
tocentry.cdte_track=CDROM_LEADOUT; /* Now the leadout track ...*/
tocentry.cdte_format=CDROM_MSF;
ioctl(fdcd,CDROMREADTOCENTRY,&tocentry); /* ... get position of it */
((DWORD*)io_stru+3)[0]=(DWORD)msf0_to_abs(tocentry.cdte_addr.msf);
TRACE(int," ----> AUDIO DISK INFO <%d-%d/%ld>\n\n",
io_stru[1],io_stru[2],
((DWORD *)io_stru+3)[0]);
break;
case 11: /* audio track info */
tocentry.cdte_track=io_stru[1]; /* track of the disc */
tocentry.cdte_format=CDROM_MSF;
ioctl(fdcd,CDROMREADTOCENTRY,&tocentry);
((DWORD*)io_stru+2)[0]=(DWORD)msf0_to_abs(tocentry.cdte_addr.msf);
/* starting point if the track */
io_stru[6]=tocentry.cdte_adr+16*tocentry.cdte_ctrl;
TRACE(int," ----> AUDIO TRACK INFO <track=%d>[%ld] \n\n",
io_stru[1],((DWORD *)io_stru+2)[0]);
break;
case 12: /* get Q-Channel / Subchannel (??) info */
subchnl.cdsc_format=CDROM_MSF;
ioctl(fdcd,CDROMSUBCHNL,&subchnl);
io_stru[1]=subchnl.cdsc_adr+16*subchnl.cdsc_ctrl;
io_stru[2]=subchnl.cdsc_trk;
io_stru[3]=subchnl.cdsc_ind; /* FIXME - ?? */
io_stru[4]=subchnl.cdsc_reladdr.msf.minute;
io_stru[5]=subchnl.cdsc_reladdr.msf.second;
io_stru[6]=subchnl.cdsc_reladdr.msf.frame;
io_stru[7]=0; /* always zero */
io_stru[8]=subchnl.cdsc_absaddr.msf.minute;
io_stru[9]=subchnl.cdsc_absaddr.msf.second;
io_stru[10]=subchnl.cdsc_absaddr.msf.frame;
break;
case 15: /* fixme !!!!!!! just a small workaround ! */
/* !!!! FIXME FIXME FIXME !! */
tocentry.cdte_track=CDROM_LEADOUT; /* Now the leadout track ...*/
tocentry.cdte_format=CDROM_MSF;
ioctl(fdcd,CDROMREADTOCENTRY,&tocentry); /* ... get position of it */
((DWORD*)io_stru+7)[0]=(DWORD)msf0_to_abs(tocentry.cdte_addr.msf);
break;
default:
FIXME(int," Cdrom-driver: IOCTL INPUT: Unimplemented <%d>!! \n",
io_stru[0]);
Error=0x0c;
break;
}
break;
case 12:
io_stru=get_io_stru((WORD *)driver_request,dorealmode);
TRACE(int," --> IOCTL OUTPUT <%d>\n",io_stru[0]);
switch (io_stru[0])
{
case 0: /* eject */
ioctl (fdcd,CDROMEJECT);
TRACE(int," ----> EJECT \n\n");
break;
case 5: /* close tray */
ioctl (fdcd,CDROMCLOSETRAY);
TRACE(int," ----> CLOSE TRAY \n\n");
break;
case 2: /* reset drive */
ioctl (fdcd,CDROMRESET);
TRACE(int," ----> RESET \n\n");
break;
default:
FIXME(int," Cdrom-driver: IOCTL OUPUT: Unimplemented <%d>!! \n",
io_stru[0]);
Error=0x0c;
break;
}
break;
case 133:
if (cdrom_a_status(fdcd)==CDROM_AUDIO_PLAY)
{
ioctl (fdcd,CDROMPAUSE);
TRACE(int," --> STOP AUDIO (Paused)\n\n");
}
else
{
ioctl (fdcd,CDROMSTOP);
TRACE(int," --> STOP AUDIO (Stopped)\n\n");
}
break;
case 132: /* FIXME - It didn't function for me... */
FIXME(int," --> PLAY AUDIO \n");
ioctl (fdcd,CDROMSTART);
FIXME(int,"Mode :<0x%02X> , [%ld-%ld]\n\n",
(unsigned char)driver_request[13],
((DWORD*)driver_request+14)[0],
((DWORD*)driver_request+18)[0]);
if (driver_request[13]==0)
{
abs_to_msf(((DWORD*)driver_request+14)[0],
((DWORD*)driver_request+18)[0],&msf);
ioctl(fdcd,CDROMPLAYMSF,&msf);
}
else
{
ERR(int,"CDRom-Driver: Unsupported address mode !!\n");
Error=0x0c;
}
break;
case 136:
TRACE(int," --> RESUME AUDIO \n\n");
ioctl(fdcd,CDROMRESUME);
break;
default:
FIXME(int," CDRom-Driver - ioctl uninplemented <%d>\n",driver_request[2]);
Error=0x0c;
}
if (Error<255)
{
driver_request[4]|=127;
driver_request[3]=Error;
}
driver_request[4]|=2*(cdrom_a_status(fdcd)==CDROM_AUDIO_PLAY);
/* close (fdcd); FIXME !! -- cannot use close when ejecting
the cd-rom - close would close it again */
}
#endif
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