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Update MiNT CD-ROM driver
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@pmandin
pmandin committed Oct 1, 2003
1 parent dd227c7 commit c040956
Showing 1 changed file with 21 additions and 170 deletions.
191 changes: 21 additions & 170 deletions src/cdrom/mint/SDL_syscdrom.c
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Expand Up @@ -20,11 +20,6 @@
slouken@libsdl.org
*/

#ifdef SAVE_RCSID
static char rcsid =
"@(#) $Id$";
#endif

/*
Atari MetaDOS CD-ROM functions
Expand All @@ -43,17 +38,18 @@ static char rcsid =
#include "SDL_cdrom.h"
#include "SDL_syscdrom.h"

/* Some ioctl() errno values which occur when the tray is empty */
#ifndef ENOMEDIUM
#define ENOMEDIUM ENOENT
#endif
#define ERRNO_TRAYEMPTY(errno) \
((errno == EIO) || (errno == ENOENT) || \
(errno == EINVAL) || (errno == ENOMEDIUM))

/* The maximum number of CD-ROM drives we'll detect */
#define MAX_DRIVES 32

/* Type of CD-ROM drive */
#define DRIVE_TYPE_NOCD -1
#define DRIVE_TYPE_STANDARD 0
#define DRIVE_TYPE_CDAR 1

typedef struct {
int type; /* Standard, or old CDAR-type CD drive ? */
unsigned char device[3]; /* Physical device letter + ':' + '\0' */
metaopen_t metaopen; /* Infos on opened drive */
} metados_drive_t;
Expand All @@ -65,8 +61,6 @@ static const char *SDL_SYS_CDName(int drive);
static int SDL_SYS_CDOpen(int drive);
static void SDL_SYS_CDClose(SDL_CD *cdrom);
static int SDL_SYS_CDioctl(int id, int command, void *arg);

/* Commands using ioctl() */
static int SDL_SYS_CDGetTOC(SDL_CD *cdrom);
static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position);
static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length);
Expand All @@ -75,16 +69,12 @@ static int SDL_SYS_CDResume(SDL_CD *cdrom);
static int SDL_SYS_CDStop(SDL_CD *cdrom);
static int SDL_SYS_CDEject(SDL_CD *cdrom);

/* Commands using Meta*() CDAR functions */
static int SDL_SYS_CD_BcdToBinary(int value);
static int SDL_SYS_CDGetTOC_CDAR(SDL_CD *cdrom);
static CDstatus SDL_SYS_CDStatus_CDAR(SDL_CD *cdrom, int *position);

int SDL_SYS_CDInit(void)
{
metainit_t metainit={0,0,0,0};
metaopen_t metaopen;
int i, handle;
struct cdrom_subchnl info;

Metainit(&metainit);
if (metainit.version == NULL) {
Expand All @@ -104,7 +94,6 @@ int SDL_SYS_CDInit(void)
SDL_numcds = 0;

for (i='A'; i<='Z'; i++) {
metados_drives[SDL_numcds].type = DRIVE_TYPE_NOCD;
metados_drives[SDL_numcds].device[0] = 0;
metados_drives[SDL_numcds].device[1] = ':';
metados_drives[SDL_numcds].device[2] = 0;
Expand All @@ -113,20 +102,10 @@ int SDL_SYS_CDInit(void)
handle = Metaopen(i, &metaopen);
if (handle == 0) {

if ( (metaopen.name[0]=='C') && (metaopen.name[1]=='D') &&
(metaopen.name[2]=='A') && (metaopen.name[3]=='R')) {
/* Drive compatible with CDAR */
metados_drives[SDL_numcds].type = DRIVE_TYPE_CDAR;
info.cdsc_format = CDROM_MSF;
if ( (Metaioctl(i, METADOS_IOCTL_MAGIC, CDROMSUBCHNL, &info) == 0) || ERRNO_TRAYEMPTY(errno) ) {
metados_drives[SDL_numcds].device[0] = i;
++SDL_numcds;
} else {
/* Check for a CD-ROM device */
if ((Metastatus(i, NULL) & 0x7fff) >= 0) {
/* Drive compatible with new ioctl functions */
metados_drives[SDL_numcds].type = DRIVE_TYPE_STANDARD;
metados_drives[SDL_numcds].device[0] = i;
++SDL_numcds;
}
}

Metaclose(i);
Expand Down Expand Up @@ -188,94 +167,12 @@ static int SDL_SYS_CDioctl(int id, int command, void *arg)
return(retval);
}

static int SDL_SYS_CD_BcdToBinary(int value)
{
int tmp;

tmp = (value>>4) & 0xf;
return (tmp*10)+(value & 0xf);
}

static int SDL_SYS_CDGetTOC_CDAR(SDL_CD *cdrom)
{
int errorcode, i, minute, second, frame;
metatocentry_t *toc_entries;
metadiscinfo_t disc_info;

/* First, read disc info */
errorcode = Metadiscinfo(metados_drives[cdrom->id].device[0], &disc_info);
if (errorcode<0) {
#ifdef DEBUG_CDROM
fprintf(stderr, "Can not read disc info\n");
#endif
return -1;
}

cdrom->numtracks = disc_info.last - disc_info.first + 1;

/* Then read toc entries for tracks */
toc_entries = (metatocentry_t *)malloc(100*sizeof(metatocentry_t));
if (toc_entries == NULL) {
#ifdef DEBUG_CDROM
fprintf(stderr, "Can not allocate memory for TOC entries\n");
#endif
return -1;
}

errorcode = Metagettoc(metados_drives[cdrom->id].device[0], 0, toc_entries);
if (errorcode<0) {
#ifdef DEBUG_CDROM
fprintf(stderr, "Can not read TOC\n");
#endif
free(toc_entries);
return -1;
}

i=0;
for (;;) {
if ((toc_entries[i].track==0) && (toc_entries[i].minute==0) &&
(toc_entries[i].second==0) && (toc_entries[i].frame==0)
) {
break;
}

if (toc_entries[i].track == CDROM_LEADOUT_CDAR) {
cdrom->track[i].id = CDROM_LEADOUT;
} else {
cdrom->track[i].id = toc_entries[i].track;
}
if (disc_info.disctype == 0) {
cdrom->track[i].type = SDL_AUDIO_TRACK;
} else {
cdrom->track[i].type = SDL_DATA_TRACK;
}
minute = SDL_SYS_CD_BcdToBinary(toc_entries[i].minute);
second = SDL_SYS_CD_BcdToBinary(toc_entries[i].second);
frame = SDL_SYS_CD_BcdToBinary(toc_entries[i].frame);
cdrom->track[i].offset = MSF_TO_FRAMES(minute, second, frame);

if ( i > 0 ) {
cdrom->track[i-1].length = cdrom->track[i].offset - cdrom->track[i-1].offset;
}

++i;
}

free(toc_entries);
return 0;
}

static int SDL_SYS_CDGetTOC(SDL_CD *cdrom)
{
int i,okay;
struct cdrom_tochdr toc;
struct cdrom_tocentry entry;

/* CDAR compatible drive ? */
if (metados_drives[cdrom->id].type == DRIVE_TYPE_CDAR) {
return SDL_SYS_CDGetTOC_CDAR(cdrom);
}

/* Use standard ioctl() */
if (SDL_SYS_CDioctl(cdrom->id, CDROMREADTOCHDR, &toc)<0) {
return -1;
Expand Down Expand Up @@ -320,26 +217,19 @@ static int SDL_SYS_CDGetTOC(SDL_CD *cdrom)
}

/* Get CD-ROM status */
static CDstatus SDL_SYS_CDStatus_CDAR(SDL_CD *cdrom, int *position)
{
return CD_ERROR;
}

static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position)
{
CDstatus status;
struct cdrom_tochdr toc;
struct cdrom_subchnl info;

/* CDAR compatible drive ? */
if (metados_drives[cdrom->id].type == DRIVE_TYPE_CDAR) {
return SDL_SYS_CDStatus_CDAR(cdrom, position);
}

/* Standard ioctl */
info.cdsc_format = CDROM_MSF;
if ( SDL_SYS_CDioctl(cdrom->id, CDROMSUBCHNL, &info) < 0 ) {
status = CD_TRAYEMPTY;
if ( ERRNO_TRAYEMPTY(errno) ) {
status = CD_TRAYEMPTY;
} else {
status = CD_ERROR;
}
} else {
switch (info.cdsc_audiostatus) {
case CDROM_AUDIO_INVALID:
Expand Down Expand Up @@ -384,30 +274,10 @@ static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position)
}

/* Start play */
static int SDL_SYS_CDPlay_CDAR(SDL_CD *cdrom, int start, int length)
{
struct cdrom_msf playtime;

FRAMES_TO_MSF(start,
&playtime.cdmsf_min0, &playtime.cdmsf_sec0, &playtime.cdmsf_frame0);
FRAMES_TO_MSF(start+length,
&playtime.cdmsf_min1, &playtime.cdmsf_sec1, &playtime.cdmsf_frame1);

return Metasetsongtime(metados_drives[cdrom->id].device[0], 0,
(playtime.cdmsf_min0<<16)|(playtime.cdmsf_sec0<<8)|(playtime.cdmsf_frame0),
(playtime.cdmsf_min1<<16)|(playtime.cdmsf_sec1<<8)|(playtime.cdmsf_frame1)
);
}

static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length)
{
struct cdrom_msf playtime;

/* CDAR compatible drive ? */
if (metados_drives[cdrom->id].type == DRIVE_TYPE_CDAR) {
return SDL_SYS_CDPlay_CDAR(cdrom, start, length);
}

FRAMES_TO_MSF(start,
&playtime.cdmsf_min0, &playtime.cdmsf_sec0, &playtime.cdmsf_frame0);
FRAMES_TO_MSF(start+length,
Expand All @@ -417,49 +287,30 @@ static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length)
playtime.cdmsf_min0, playtime.cdmsf_sec0, playtime.cdmsf_frame0,
playtime.cdmsf_min1, playtime.cdmsf_sec1, playtime.cdmsf_frame1);
#endif
return(SDL_SYS_CDioctl(cdrom->id, CDROMPLAYMSF, &playtime));

return SDL_SYS_CDioctl(cdrom->id, CDROMPLAYMSF, &playtime);
}

/* Pause play */
static int SDL_SYS_CDPause(SDL_CD *cdrom)
{
/* CDAR compatible drive ? */
if (metados_drives[cdrom->id].type == DRIVE_TYPE_CDAR) {
return -1;
}

return(SDL_SYS_CDioctl(cdrom->id, CDROMPAUSE, 0));
return SDL_SYS_CDioctl(cdrom->id, CDROMPAUSE, 0);
}

/* Resume play */
static int SDL_SYS_CDResume(SDL_CD *cdrom)
{
/* CDAR compatible drive ? */
if (metados_drives[cdrom->id].type == DRIVE_TYPE_CDAR) {
return -1;
}

return(SDL_SYS_CDioctl(cdrom->id, CDROMRESUME, 0));
return SDL_SYS_CDioctl(cdrom->id, CDROMRESUME, 0);
}

/* Stop play */
static int SDL_SYS_CDStop(SDL_CD *cdrom)
{
/* CDAR compatible drive ? */
if (metados_drives[cdrom->id].type == DRIVE_TYPE_CDAR) {
return Metastopaudio(metados_drives[cdrom->id].device[0]);
}

return(SDL_SYS_CDioctl(cdrom->id, CDROMSTOP, 0));
return SDL_SYS_CDioctl(cdrom->id, CDROMSTOP, 0);
}

/* Eject the CD-ROM */
static int SDL_SYS_CDEject(SDL_CD *cdrom)
{
/* CDAR compatible drive ? */
if (metados_drives[cdrom->id].type == DRIVE_TYPE_CDAR) {
return -1;
}

return(SDL_SYS_CDioctl(cdrom->id, CDROMEJECT, 0));
return SDL_SYS_CDioctl(cdrom->id, CDROMEJECT, 0);
}

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