symbian-qemu-0.9.1-12/libsdl-trunk/src/cdrom/linux/SDL_syscdrom.c
changeset 1 2fb8b9db1c86
equal deleted inserted replaced
0:ffa851df0825 1:2fb8b9db1c86
       
     1 /*
       
     2     SDL - Simple DirectMedia Layer
       
     3     Copyright (C) 1997-2006 Sam Lantinga
       
     4 
       
     5     This library is free software; you can redistribute it and/or
       
     6     modify it under the terms of the GNU Lesser General Public
       
     7     License as published by the Free Software Foundation; either
       
     8     version 2.1 of the License, or (at your option) any later version.
       
     9 
       
    10     This library is distributed in the hope that it will be useful,
       
    11     but WITHOUT ANY WARRANTY; without even the implied warranty of
       
    12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
       
    13     Lesser General Public License for more details.
       
    14 
       
    15     You should have received a copy of the GNU Lesser General Public
       
    16     License along with this library; if not, write to the Free Software
       
    17     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
       
    18 
       
    19     Sam Lantinga
       
    20     slouken@libsdl.org
       
    21 */
       
    22 #include "SDL_config.h"
       
    23 
       
    24 #ifdef SDL_CDROM_LINUX
       
    25 
       
    26 /* Functions for system-level CD-ROM audio control */
       
    27 
       
    28 #include <string.h>	/* For strerror() */
       
    29 #include <sys/types.h>
       
    30 #include <sys/stat.h>
       
    31 #include <sys/ioctl.h>
       
    32 #include <fcntl.h>
       
    33 #include <errno.h>
       
    34 #include <unistd.h>
       
    35 #ifdef __LINUX__
       
    36 #ifdef HAVE_LINUX_VERSION_H
       
    37 /* linux 2.6.9 workaround */
       
    38 #include <linux/version.h>
       
    39 #if LINUX_VERSION_CODE == KERNEL_VERSION(2,6,9)
       
    40 #include <asm/types.h>
       
    41 #define __le64 __u64
       
    42 #define __le32 __u32
       
    43 #define __le16 __u16
       
    44 #define __be64 __u64
       
    45 #define __be32 __u32
       
    46 #define __be16 __u16
       
    47 #endif /* linux 2.6.9 workaround */
       
    48 #endif /* HAVE_LINUX_VERSION_H */
       
    49 #include <linux/cdrom.h>
       
    50 #endif
       
    51 #ifdef __SVR4
       
    52 #include <sys/cdio.h>
       
    53 #endif
       
    54 
       
    55 /* Define this to use the alternative getmntent() code */
       
    56 #ifndef __SVR4
       
    57 #define USE_MNTENT
       
    58 #endif
       
    59 
       
    60 #ifdef USE_MNTENT
       
    61 #if defined(__USLC__)
       
    62 #include <sys/mntent.h>
       
    63 #else
       
    64 #include <mntent.h>
       
    65 #endif
       
    66 
       
    67 #ifndef _PATH_MNTTAB
       
    68 #ifdef MNTTAB
       
    69 #define _PATH_MNTTAB	MNTTAB
       
    70 #else
       
    71 #define _PATH_MNTTAB	"/etc/fstab"
       
    72 #endif
       
    73 #endif /* !_PATH_MNTTAB */
       
    74 
       
    75 #ifndef _PATH_MOUNTED
       
    76 #define _PATH_MOUNTED	"/etc/mtab"
       
    77 #endif /* !_PATH_MOUNTED */
       
    78 
       
    79 #ifndef MNTTYPE_CDROM
       
    80 #define MNTTYPE_CDROM	"iso9660"
       
    81 #endif
       
    82 #ifndef MNTTYPE_SUPER
       
    83 #define MNTTYPE_SUPER	"supermount"
       
    84 #endif
       
    85 #endif /* USE_MNTENT */
       
    86 
       
    87 #include "SDL_cdrom.h"
       
    88 #include "../SDL_syscdrom.h"
       
    89 
       
    90 
       
    91 /* The maximum number of CD-ROM drives we'll detect */
       
    92 #define MAX_DRIVES	16	
       
    93 
       
    94 /* A list of available CD-ROM drives */
       
    95 static char *SDL_cdlist[MAX_DRIVES];
       
    96 static dev_t SDL_cdmode[MAX_DRIVES];
       
    97 
       
    98 /* The system-dependent CD control functions */
       
    99 static const char *SDL_SYS_CDName(int drive);
       
   100 static int SDL_SYS_CDOpen(int drive);
       
   101 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom);
       
   102 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position);
       
   103 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length);
       
   104 static int SDL_SYS_CDPause(SDL_CD *cdrom);
       
   105 static int SDL_SYS_CDResume(SDL_CD *cdrom);
       
   106 static int SDL_SYS_CDStop(SDL_CD *cdrom);
       
   107 static int SDL_SYS_CDEject(SDL_CD *cdrom);
       
   108 static void SDL_SYS_CDClose(SDL_CD *cdrom);
       
   109 
       
   110 /* Some ioctl() errno values which occur when the tray is empty */
       
   111 #ifndef ENOMEDIUM
       
   112 #define ENOMEDIUM ENOENT
       
   113 #endif
       
   114 #define ERRNO_TRAYEMPTY(errno)	\
       
   115 	((errno == EIO)    || (errno == ENOENT) || \
       
   116 	 (errno == EINVAL) || (errno == ENOMEDIUM))
       
   117 
       
   118 /* Check a drive to see if it is a CD-ROM */
       
   119 static int CheckDrive(char *drive, char *mnttype, struct stat *stbuf)
       
   120 {
       
   121 	int is_cd, cdfd;
       
   122 	struct cdrom_subchnl info;
       
   123 
       
   124 	/* If it doesn't exist, return -1 */
       
   125 	if ( stat(drive, stbuf) < 0 ) {
       
   126 		return(-1);
       
   127 	}
       
   128 
       
   129 	/* If it does exist, verify that it's an available CD-ROM */
       
   130 	is_cd = 0;
       
   131 	if ( S_ISCHR(stbuf->st_mode) || S_ISBLK(stbuf->st_mode) ) {
       
   132 		cdfd = open(drive, (O_RDONLY|O_NONBLOCK), 0);
       
   133 		if ( cdfd >= 0 ) {
       
   134 			info.cdsc_format = CDROM_MSF;
       
   135 			/* Under Linux, EIO occurs when a disk is not present.
       
   136 			 */
       
   137 			if ( (ioctl(cdfd, CDROMSUBCHNL, &info) == 0) ||
       
   138 						ERRNO_TRAYEMPTY(errno) ) {
       
   139 				is_cd = 1;
       
   140 			}
       
   141 			close(cdfd);
       
   142 		}
       
   143 #ifdef USE_MNTENT
       
   144 		/* Even if we can't read it, it might be mounted */
       
   145 		else if ( mnttype && (SDL_strcmp(mnttype, MNTTYPE_CDROM) == 0) ) {
       
   146 			is_cd = 1;
       
   147 		}
       
   148 #endif
       
   149 	}
       
   150 	return(is_cd);
       
   151 }
       
   152 
       
   153 /* Add a CD-ROM drive to our list of valid drives */
       
   154 static void AddDrive(char *drive, struct stat *stbuf)
       
   155 {
       
   156 	int i;
       
   157 
       
   158 	if ( SDL_numcds < MAX_DRIVES ) {
       
   159 		/* Check to make sure it's not already in our list.
       
   160 	 	   This can happen when we see a drive via symbolic link.
       
   161 		 */
       
   162 		for ( i=0; i<SDL_numcds; ++i ) {
       
   163 			if ( stbuf->st_rdev == SDL_cdmode[i] ) {
       
   164 #ifdef DEBUG_CDROM
       
   165   fprintf(stderr, "Duplicate drive detected: %s == %s\n", drive, SDL_cdlist[i]);
       
   166 #endif
       
   167 				return;
       
   168 			}
       
   169 		}
       
   170 
       
   171 		/* Add this drive to our list */
       
   172 		i = SDL_numcds;
       
   173 		SDL_cdlist[i] = SDL_strdup(drive);
       
   174 		if ( SDL_cdlist[i] == NULL ) {
       
   175 			SDL_OutOfMemory();
       
   176 			return;
       
   177 		}
       
   178 		SDL_cdmode[i] = stbuf->st_rdev;
       
   179 		++SDL_numcds;
       
   180 #ifdef DEBUG_CDROM
       
   181   fprintf(stderr, "Added CD-ROM drive: %s\n", drive);
       
   182 #endif
       
   183 	}
       
   184 }
       
   185 
       
   186 #ifdef USE_MNTENT
       
   187 static void CheckMounts(const char *mtab)
       
   188 {
       
   189 	FILE *mntfp;
       
   190 	struct mntent *mntent;
       
   191 	struct stat stbuf;
       
   192 
       
   193 	mntfp = setmntent(mtab, "r");
       
   194 	if ( mntfp != NULL ) {
       
   195 		char *tmp;
       
   196 		char *mnt_type;
       
   197 		size_t mnt_type_len;
       
   198 		char *mnt_dev;
       
   199 		size_t mnt_dev_len;
       
   200 
       
   201 		while ( (mntent=getmntent(mntfp)) != NULL ) {
       
   202 			mnt_type_len = SDL_strlen(mntent->mnt_type) + 1;
       
   203 			mnt_type = SDL_stack_alloc(char, mnt_type_len);
       
   204 			if (mnt_type == NULL)
       
   205 				continue;  /* maybe you'll get lucky next time. */
       
   206 
       
   207 			mnt_dev_len = SDL_strlen(mntent->mnt_fsname) + 1;
       
   208 			mnt_dev = SDL_stack_alloc(char, mnt_dev_len);
       
   209 			if (mnt_dev == NULL) {
       
   210 				SDL_stack_free(mnt_type);
       
   211 				continue;
       
   212 			}
       
   213 
       
   214 			SDL_strlcpy(mnt_type, mntent->mnt_type, mnt_type_len);
       
   215 			SDL_strlcpy(mnt_dev, mntent->mnt_fsname, mnt_dev_len);
       
   216 
       
   217 			/* Handle "supermount" filesystem mounts */
       
   218 			if ( SDL_strcmp(mnt_type, MNTTYPE_SUPER) == 0 ) {
       
   219 				tmp = SDL_strstr(mntent->mnt_opts, "fs=");
       
   220 				if ( tmp ) {
       
   221 					SDL_stack_free(mnt_type);
       
   222 					mnt_type = SDL_strdup(tmp + SDL_strlen("fs="));
       
   223 					if ( mnt_type ) {
       
   224 						tmp = SDL_strchr(mnt_type, ',');
       
   225 						if ( tmp ) {
       
   226 							*tmp = '\0';
       
   227 						}
       
   228 					}
       
   229 				}
       
   230 				tmp = SDL_strstr(mntent->mnt_opts, "dev=");
       
   231 				if ( tmp ) {
       
   232 					SDL_stack_free(mnt_dev);
       
   233 					mnt_dev = SDL_strdup(tmp + SDL_strlen("dev="));
       
   234 					if ( mnt_dev ) {
       
   235 						tmp = SDL_strchr(mnt_dev, ',');
       
   236 						if ( tmp ) {
       
   237 							*tmp = '\0';
       
   238 						}
       
   239 					}
       
   240 				}
       
   241 			}
       
   242 			if ( SDL_strcmp(mnt_type, MNTTYPE_CDROM) == 0 ) {
       
   243 #ifdef DEBUG_CDROM
       
   244   fprintf(stderr, "Checking mount path from %s: %s mounted on %s of %s\n",
       
   245 	mtab, mnt_dev, mntent->mnt_dir, mnt_type);
       
   246 #endif
       
   247 				if (CheckDrive(mnt_dev, mnt_type, &stbuf) > 0) {
       
   248 					AddDrive(mnt_dev, &stbuf);
       
   249 				}
       
   250 			}
       
   251 			SDL_stack_free(mnt_dev);
       
   252 			SDL_stack_free(mnt_type);
       
   253 		}
       
   254 		endmntent(mntfp);
       
   255 	}
       
   256 }
       
   257 #endif /* USE_MNTENT */
       
   258 
       
   259 int  SDL_SYS_CDInit(void)
       
   260 {
       
   261 	/* checklist: /dev/cdrom, /dev/hd?, /dev/scd? /dev/sr? */
       
   262 	static char *checklist[] = {
       
   263 		"cdrom", "?a hd?", "?0 scd?", "?0 sr?", NULL
       
   264 	};
       
   265 	char *SDLcdrom;
       
   266 	int i, j, exists;
       
   267 	char drive[32];
       
   268 	struct stat stbuf;
       
   269 
       
   270 	/* Fill in our driver capabilities */
       
   271 	SDL_CDcaps.Name = SDL_SYS_CDName;
       
   272 	SDL_CDcaps.Open = SDL_SYS_CDOpen;
       
   273 	SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC;
       
   274 	SDL_CDcaps.Status = SDL_SYS_CDStatus;
       
   275 	SDL_CDcaps.Play = SDL_SYS_CDPlay;
       
   276 	SDL_CDcaps.Pause = SDL_SYS_CDPause;
       
   277 	SDL_CDcaps.Resume = SDL_SYS_CDResume;
       
   278 	SDL_CDcaps.Stop = SDL_SYS_CDStop;
       
   279 	SDL_CDcaps.Eject = SDL_SYS_CDEject;
       
   280 	SDL_CDcaps.Close = SDL_SYS_CDClose;
       
   281 
       
   282 	/* Look in the environment for our CD-ROM drive list */
       
   283 	SDLcdrom = SDL_getenv("SDL_CDROM");	/* ':' separated list of devices */
       
   284 	if ( SDLcdrom != NULL ) {
       
   285 		char *cdpath, *delim;
       
   286 		size_t len = SDL_strlen(SDLcdrom)+1;
       
   287 		cdpath = SDL_stack_alloc(char, len);
       
   288 		if ( cdpath != NULL ) {
       
   289 			SDL_strlcpy(cdpath, SDLcdrom, len);
       
   290 			SDLcdrom = cdpath;
       
   291 			do {
       
   292 				delim = SDL_strchr(SDLcdrom, ':');
       
   293 				if ( delim ) {
       
   294 					*delim++ = '\0';
       
   295 				}
       
   296 #ifdef DEBUG_CDROM
       
   297   fprintf(stderr, "Checking CD-ROM drive from SDL_CDROM: %s\n", SDLcdrom);
       
   298 #endif
       
   299 				if ( CheckDrive(SDLcdrom, NULL, &stbuf) > 0 ) {
       
   300 					AddDrive(SDLcdrom, &stbuf);
       
   301 				}
       
   302 				if ( delim ) {
       
   303 					SDLcdrom = delim;
       
   304 				} else {
       
   305 					SDLcdrom = NULL;
       
   306 				}
       
   307 			} while ( SDLcdrom );
       
   308 			SDL_stack_free(cdpath);
       
   309 		}
       
   310 
       
   311 		/* If we found our drives, there's nothing left to do */
       
   312 		if ( SDL_numcds > 0 ) {
       
   313 			return(0);
       
   314 		}
       
   315 	}
       
   316 
       
   317 #ifdef USE_MNTENT
       
   318 	/* Check /dev/cdrom first :-) */
       
   319 	if (CheckDrive("/dev/cdrom", NULL, &stbuf) > 0) {
       
   320 		AddDrive("/dev/cdrom", &stbuf);
       
   321 	}
       
   322 
       
   323 	/* Now check the currently mounted CD drives */
       
   324 	CheckMounts(_PATH_MOUNTED);
       
   325 
       
   326 	/* Finally check possible mountable drives in /etc/fstab */
       
   327 	CheckMounts(_PATH_MNTTAB);
       
   328 
       
   329 	/* If we found our drives, there's nothing left to do */
       
   330 	if ( SDL_numcds > 0 ) {
       
   331 		return(0);
       
   332 	}
       
   333 #endif /* USE_MNTENT */
       
   334 
       
   335 	/* Scan the system for CD-ROM drives.
       
   336 	   Not always 100% reliable, so use the USE_MNTENT code above first.
       
   337 	 */
       
   338 	for ( i=0; checklist[i]; ++i ) {
       
   339 		if ( checklist[i][0] == '?' ) {
       
   340 			char *insert;
       
   341 			exists = 1;
       
   342 			for ( j=checklist[i][1]; exists; ++j ) {
       
   343 				SDL_snprintf(drive, SDL_arraysize(drive), "/dev/%s", &checklist[i][3]);
       
   344 				insert = SDL_strchr(drive, '?');
       
   345 				if ( insert != NULL ) {
       
   346 					*insert = j;
       
   347 				}
       
   348 #ifdef DEBUG_CDROM
       
   349   fprintf(stderr, "Checking possible CD-ROM drive: %s\n", drive);
       
   350 #endif
       
   351 				switch (CheckDrive(drive, NULL, &stbuf)) {
       
   352 					/* Drive exists and is a CD-ROM */
       
   353 					case 1:
       
   354 						AddDrive(drive, &stbuf);
       
   355 						break;
       
   356 					/* Drive exists, but isn't a CD-ROM */
       
   357 					case 0:
       
   358 						break;
       
   359 					/* Drive doesn't exist */
       
   360 					case -1:
       
   361 						exists = 0;
       
   362 						break;
       
   363 				}
       
   364 			}
       
   365 		} else {
       
   366 			SDL_snprintf(drive, SDL_arraysize(drive), "/dev/%s", checklist[i]);
       
   367 #ifdef DEBUG_CDROM
       
   368   fprintf(stderr, "Checking possible CD-ROM drive: %s\n", drive);
       
   369 #endif
       
   370 			if ( CheckDrive(drive, NULL, &stbuf) > 0 ) {
       
   371 				AddDrive(drive, &stbuf);
       
   372 			}
       
   373 		}
       
   374 	}
       
   375 	return(0);
       
   376 }
       
   377 
       
   378 /* General ioctl() CD-ROM command function */
       
   379 static int SDL_SYS_CDioctl(int id, int command, void *arg)
       
   380 {
       
   381 	int retval;
       
   382 
       
   383 	retval = ioctl(id, command, arg);
       
   384 	if ( retval < 0 ) {
       
   385 		SDL_SetError("ioctl() error: %s", strerror(errno));
       
   386 	}
       
   387 	return(retval);
       
   388 }
       
   389 
       
   390 static const char *SDL_SYS_CDName(int drive)
       
   391 {
       
   392 	return(SDL_cdlist[drive]);
       
   393 }
       
   394 
       
   395 static int SDL_SYS_CDOpen(int drive)
       
   396 {
       
   397 	return(open(SDL_cdlist[drive], (O_RDONLY|O_NONBLOCK), 0));
       
   398 }
       
   399 
       
   400 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom)
       
   401 {
       
   402 	struct cdrom_tochdr toc;
       
   403 	int i, okay;
       
   404 	struct cdrom_tocentry entry;
       
   405 
       
   406 	okay = 0;
       
   407 	if ( SDL_SYS_CDioctl(cdrom->id, CDROMREADTOCHDR, &toc) == 0 ) {
       
   408 		cdrom->numtracks = toc.cdth_trk1-toc.cdth_trk0+1;
       
   409 		if ( cdrom->numtracks > SDL_MAX_TRACKS ) {
       
   410 			cdrom->numtracks = SDL_MAX_TRACKS;
       
   411 		}
       
   412 		/* Read all the track TOC entries */
       
   413 		for ( i=0; i<=cdrom->numtracks; ++i ) {
       
   414 			if ( i == cdrom->numtracks ) {
       
   415 				cdrom->track[i].id = CDROM_LEADOUT;
       
   416 			} else {
       
   417 				cdrom->track[i].id = toc.cdth_trk0+i;
       
   418 			}
       
   419 			entry.cdte_track = cdrom->track[i].id;
       
   420 			entry.cdte_format = CDROM_MSF;
       
   421 			if ( SDL_SYS_CDioctl(cdrom->id, CDROMREADTOCENTRY,
       
   422 								&entry) < 0 ) {
       
   423 				break;
       
   424 			} else {
       
   425 				if ( entry.cdte_ctrl & CDROM_DATA_TRACK ) {
       
   426 					cdrom->track[i].type = SDL_DATA_TRACK;
       
   427 				} else {
       
   428 					cdrom->track[i].type = SDL_AUDIO_TRACK;
       
   429 				}
       
   430 				cdrom->track[i].offset = MSF_TO_FRAMES(
       
   431 						entry.cdte_addr.msf.minute,
       
   432 						entry.cdte_addr.msf.second,
       
   433 						entry.cdte_addr.msf.frame);
       
   434 				cdrom->track[i].length = 0;
       
   435 				if ( i > 0 ) {
       
   436 					cdrom->track[i-1].length =
       
   437 						cdrom->track[i].offset-
       
   438 						cdrom->track[i-1].offset;
       
   439 				}
       
   440 			}
       
   441 		}
       
   442 		if ( i == (cdrom->numtracks+1) ) {
       
   443 			okay = 1;
       
   444 		}
       
   445 	}
       
   446 	return(okay ? 0 : -1);
       
   447 }
       
   448 
       
   449 /* Get CD-ROM status */
       
   450 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position)
       
   451 {
       
   452 	CDstatus status;
       
   453 	struct cdrom_tochdr toc;
       
   454 	struct cdrom_subchnl info;
       
   455 
       
   456 	info.cdsc_format = CDROM_MSF;
       
   457 	if ( ioctl(cdrom->id, CDROMSUBCHNL, &info) < 0 ) {
       
   458 		if ( ERRNO_TRAYEMPTY(errno) ) {
       
   459 			status = CD_TRAYEMPTY;
       
   460 		} else {
       
   461 			status = CD_ERROR;
       
   462 		}
       
   463 	} else {
       
   464 		switch (info.cdsc_audiostatus) {
       
   465 			case CDROM_AUDIO_INVALID:
       
   466 			case CDROM_AUDIO_NO_STATUS:
       
   467 				/* Try to determine if there's a CD available */
       
   468 				if (ioctl(cdrom->id, CDROMREADTOCHDR, &toc)==0)
       
   469 					status = CD_STOPPED;
       
   470 				else
       
   471 					status = CD_TRAYEMPTY;
       
   472 				break;
       
   473 			case CDROM_AUDIO_COMPLETED:
       
   474 				status = CD_STOPPED;
       
   475 				break;
       
   476 			case CDROM_AUDIO_PLAY:
       
   477 				status = CD_PLAYING;
       
   478 				break;
       
   479 			case CDROM_AUDIO_PAUSED:
       
   480 				/* Workaround buggy CD-ROM drive */
       
   481 				if ( info.cdsc_trk == CDROM_LEADOUT ) {
       
   482 					status = CD_STOPPED;
       
   483 				} else {
       
   484 					status = CD_PAUSED;
       
   485 				}
       
   486 				break;
       
   487 			default:
       
   488 				status = CD_ERROR;
       
   489 				break;
       
   490 		}
       
   491 	}
       
   492 	if ( position ) {
       
   493 		if ( status == CD_PLAYING || (status == CD_PAUSED) ) {
       
   494 			*position = MSF_TO_FRAMES(
       
   495 					info.cdsc_absaddr.msf.minute,
       
   496 					info.cdsc_absaddr.msf.second,
       
   497 					info.cdsc_absaddr.msf.frame);
       
   498 		} else {
       
   499 			*position = 0;
       
   500 		}
       
   501 	}
       
   502 	return(status);
       
   503 }
       
   504 
       
   505 /* Start play */
       
   506 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length)
       
   507 {
       
   508 	struct cdrom_msf playtime;
       
   509 
       
   510 	FRAMES_TO_MSF(start,
       
   511 	   &playtime.cdmsf_min0, &playtime.cdmsf_sec0, &playtime.cdmsf_frame0);
       
   512 	FRAMES_TO_MSF(start+length,
       
   513 	   &playtime.cdmsf_min1, &playtime.cdmsf_sec1, &playtime.cdmsf_frame1);
       
   514 #ifdef DEBUG_CDROM
       
   515   fprintf(stderr, "Trying to play from %d:%d:%d to %d:%d:%d\n",
       
   516 	playtime.cdmsf_min0, playtime.cdmsf_sec0, playtime.cdmsf_frame0,
       
   517 	playtime.cdmsf_min1, playtime.cdmsf_sec1, playtime.cdmsf_frame1);
       
   518 #endif
       
   519 	return(SDL_SYS_CDioctl(cdrom->id, CDROMPLAYMSF, &playtime));
       
   520 }
       
   521 
       
   522 /* Pause play */
       
   523 static int SDL_SYS_CDPause(SDL_CD *cdrom)
       
   524 {
       
   525 	return(SDL_SYS_CDioctl(cdrom->id, CDROMPAUSE, 0));
       
   526 }
       
   527 
       
   528 /* Resume play */
       
   529 static int SDL_SYS_CDResume(SDL_CD *cdrom)
       
   530 {
       
   531 	return(SDL_SYS_CDioctl(cdrom->id, CDROMRESUME, 0));
       
   532 }
       
   533 
       
   534 /* Stop play */
       
   535 static int SDL_SYS_CDStop(SDL_CD *cdrom)
       
   536 {
       
   537 	return(SDL_SYS_CDioctl(cdrom->id, CDROMSTOP, 0));
       
   538 }
       
   539 
       
   540 /* Eject the CD-ROM */
       
   541 static int SDL_SYS_CDEject(SDL_CD *cdrom)
       
   542 {
       
   543 	return(SDL_SYS_CDioctl(cdrom->id, CDROMEJECT, 0));
       
   544 }
       
   545 
       
   546 /* Close the CD-ROM handle */
       
   547 static void SDL_SYS_CDClose(SDL_CD *cdrom)
       
   548 {
       
   549 	close(cdrom->id);
       
   550 }
       
   551 
       
   552 void SDL_SYS_CDQuit(void)
       
   553 {
       
   554 	int i;
       
   555 
       
   556 	if ( SDL_numcds > 0 ) {
       
   557 		for ( i=0; i<SDL_numcds; ++i ) {
       
   558 			SDL_free(SDL_cdlist[i]);
       
   559 		}
       
   560 		SDL_numcds = 0;
       
   561 	}
       
   562 }
       
   563 
       
   564 #endif /* SDL_CDROM_LINUX */