Mercurial > sdl-ios-xcode
annotate src/cdrom/linux/SDL_syscdrom.c @ 1081:369dcdb52d70
Call old interrupt when receiving MIDI stuff
| author | Patrice Mandin <patmandin@gmail.com> |
|---|---|
| date | Wed, 29 Jun 2005 16:18:46 +0000 |
| parents | 3e637850c02b |
| children | c9b51268668f |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
769
b8d311d90021
Updated copyright information for 2004 (Happy New Year!)
Sam Lantinga <slouken@libsdl.org>
parents:
396
diff
changeset
|
3 Copyright (C) 1997-2004 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 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 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
|
252
e8157fcb3114
Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents:
247
diff
changeset
|
20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* Functions for system-level CD-ROM audio control */ | |
| 29 | |
| 30 #include <sys/types.h> | |
| 31 #include <stdlib.h> | |
| 32 #include <sys/stat.h> | |
| 33 #include <sys/ioctl.h> | |
| 34 #include <fcntl.h> | |
| 35 #include <stdio.h> | |
| 36 #include <string.h> | |
| 37 #include <errno.h> | |
| 38 #include <unistd.h> | |
| 39 #ifdef __linux__ | |
|
1062
3e637850c02b
Date: Tue, 22 Mar 2005 23:50:20 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
1051
diff
changeset
|
40 #ifdef HAVE_LINUX_VERSION_H |
|
998
0e6627072f7a
Date: Wed, 24 Nov 2004 01:25:48 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
41 /* linux 2.6.9 workaround */ |
|
0e6627072f7a
Date: Wed, 24 Nov 2004 01:25:48 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
42 #include <linux/version.h> |
|
0e6627072f7a
Date: Wed, 24 Nov 2004 01:25:48 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
43 #if LINUX_VERSION_CODE == KERNEL_VERSION(2,6,9) |
|
0e6627072f7a
Date: Wed, 24 Nov 2004 01:25:48 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
44 #include <asm/types.h> |
|
0e6627072f7a
Date: Wed, 24 Nov 2004 01:25:48 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
45 #define __le64 __u64 |
|
0e6627072f7a
Date: Wed, 24 Nov 2004 01:25:48 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
46 #define __le32 __u32 |
|
0e6627072f7a
Date: Wed, 24 Nov 2004 01:25:48 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
47 #define __le16 __u16 |
|
0e6627072f7a
Date: Wed, 24 Nov 2004 01:25:48 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
48 #define __be64 __u64 |
|
0e6627072f7a
Date: Wed, 24 Nov 2004 01:25:48 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
49 #define __be32 __u32 |
|
0e6627072f7a
Date: Wed, 24 Nov 2004 01:25:48 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
50 #define __be16 __u16 |
|
0e6627072f7a
Date: Wed, 24 Nov 2004 01:25:48 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
51 #endif /* linux 2.6.9 workaround */ |
|
1062
3e637850c02b
Date: Tue, 22 Mar 2005 23:50:20 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
1051
diff
changeset
|
52 #endif /* HAVE_LINUX_VERSION_H */ |
| 0 | 53 #include <linux/cdrom.h> |
| 54 #endif | |
| 55 #ifdef __SVR4 | |
| 56 #include <sys/cdio.h> | |
| 57 #endif | |
| 58 | |
| 59 /* Define this to use the alternative getmntent() code */ | |
| 60 #ifndef __SVR4 | |
| 61 #define USE_MNTENT | |
| 62 #endif | |
| 63 | |
| 64 #ifdef USE_MNTENT | |
| 65 #if defined(__USLC__) | |
| 66 #include <sys/mntent.h> | |
| 67 #else | |
| 68 #include <mntent.h> | |
| 69 #endif | |
| 70 | |
| 71 #ifndef _PATH_MNTTAB | |
| 72 #ifdef MNTTAB | |
| 73 #define _PATH_MNTTAB MNTTAB | |
| 74 #else | |
| 75 #define _PATH_MNTTAB "/etc/fstab" | |
| 76 #endif | |
| 77 #endif /* !_PATH_MNTTAB */ | |
| 78 | |
| 79 #ifndef _PATH_MOUNTED | |
| 80 #define _PATH_MOUNTED "/etc/mtab" | |
| 81 #endif /* !_PATH_MOUNTED */ | |
| 82 | |
| 83 #ifndef MNTTYPE_CDROM | |
| 84 #define MNTTYPE_CDROM "iso9660" | |
| 85 #endif | |
| 86 #ifndef MNTTYPE_SUPER | |
| 87 #define MNTTYPE_SUPER "supermount" | |
| 88 #endif | |
| 89 #endif /* USE_MNTENT */ | |
| 90 | |
| 91 #include "SDL_error.h" | |
| 92 #include "SDL_cdrom.h" | |
| 93 #include "SDL_syscdrom.h" | |
| 94 | |
| 95 | |
| 96 /* The maximum number of CD-ROM drives we'll detect */ | |
| 97 #define MAX_DRIVES 16 | |
| 98 | |
| 99 /* A list of available CD-ROM drives */ | |
| 100 static char *SDL_cdlist[MAX_DRIVES]; | |
| 101 static dev_t SDL_cdmode[MAX_DRIVES]; | |
| 102 | |
| 103 /* The system-dependent CD control functions */ | |
| 104 static const char *SDL_SYS_CDName(int drive); | |
| 105 static int SDL_SYS_CDOpen(int drive); | |
| 106 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom); | |
| 107 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position); | |
| 108 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length); | |
| 109 static int SDL_SYS_CDPause(SDL_CD *cdrom); | |
| 110 static int SDL_SYS_CDResume(SDL_CD *cdrom); | |
| 111 static int SDL_SYS_CDStop(SDL_CD *cdrom); | |
| 112 static int SDL_SYS_CDEject(SDL_CD *cdrom); | |
| 113 static void SDL_SYS_CDClose(SDL_CD *cdrom); | |
| 114 | |
| 115 /* Some ioctl() errno values which occur when the tray is empty */ | |
|
396
11d6eed68dba
Added check for ENOMEDIUM to the Linux CDROM code
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
116 #ifndef ENOMEDIUM |
|
11d6eed68dba
Added check for ENOMEDIUM to the Linux CDROM code
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
117 #define ENOMEDIUM ENOENT |
|
11d6eed68dba
Added check for ENOMEDIUM to the Linux CDROM code
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
118 #endif |
| 0 | 119 #define ERRNO_TRAYEMPTY(errno) \ |
|
396
11d6eed68dba
Added check for ENOMEDIUM to the Linux CDROM code
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
120 ((errno == EIO) || (errno == ENOENT) || \ |
|
11d6eed68dba
Added check for ENOMEDIUM to the Linux CDROM code
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
121 (errno == EINVAL) || (errno == ENOMEDIUM)) |
| 0 | 122 |
| 123 /* Check a drive to see if it is a CD-ROM */ | |
| 124 static int CheckDrive(char *drive, char *mnttype, struct stat *stbuf) | |
| 125 { | |
| 126 int is_cd, cdfd; | |
| 127 struct cdrom_subchnl info; | |
| 128 | |
| 129 /* If it doesn't exist, return -1 */ | |
| 130 if ( stat(drive, stbuf) < 0 ) { | |
| 131 return(-1); | |
| 132 } | |
| 133 | |
| 134 /* If it does exist, verify that it's an available CD-ROM */ | |
| 135 is_cd = 0; | |
| 136 if ( S_ISCHR(stbuf->st_mode) || S_ISBLK(stbuf->st_mode) ) { | |
|
1051
091350827e08
SDL_CDOpen() fails on Linux if data track on disc is mounted in the
Ryan C. Gordon <icculus@icculus.org>
parents:
998
diff
changeset
|
137 cdfd = open(drive, (O_RDONLY|O_NONBLOCK), 0); |
| 0 | 138 if ( cdfd >= 0 ) { |
| 139 info.cdsc_format = CDROM_MSF; | |
| 140 /* Under Linux, EIO occurs when a disk is not present. | |
| 141 */ | |
| 142 if ( (ioctl(cdfd, CDROMSUBCHNL, &info) == 0) || | |
| 143 ERRNO_TRAYEMPTY(errno) ) { | |
| 144 is_cd = 1; | |
| 145 } | |
| 146 close(cdfd); | |
| 147 } | |
| 148 #ifdef USE_MNTENT | |
| 149 /* Even if we can't read it, it might be mounted */ | |
| 150 else if ( mnttype && (strcmp(mnttype, MNTTYPE_CDROM) == 0) ) { | |
| 151 is_cd = 1; | |
| 152 } | |
| 153 #endif | |
| 154 } | |
| 155 return(is_cd); | |
| 156 } | |
| 157 | |
| 158 /* Add a CD-ROM drive to our list of valid drives */ | |
| 159 static void AddDrive(char *drive, struct stat *stbuf) | |
| 160 { | |
| 161 int i; | |
| 162 | |
| 163 if ( SDL_numcds < MAX_DRIVES ) { | |
| 164 /* Check to make sure it's not already in our list. | |
| 165 This can happen when we see a drive via symbolic link. | |
| 166 */ | |
| 167 for ( i=0; i<SDL_numcds; ++i ) { | |
| 168 if ( stbuf->st_rdev == SDL_cdmode[i] ) { | |
| 169 #ifdef DEBUG_CDROM | |
| 170 fprintf(stderr, "Duplicate drive detected: %s == %s\n", drive, SDL_cdlist[i]); | |
| 171 #endif | |
| 172 return; | |
| 173 } | |
| 174 } | |
| 175 | |
| 176 /* Add this drive to our list */ | |
| 177 i = SDL_numcds; | |
| 178 SDL_cdlist[i] = (char *)malloc(strlen(drive)+1); | |
| 179 if ( SDL_cdlist[i] == NULL ) { | |
| 180 SDL_OutOfMemory(); | |
| 181 return; | |
| 182 } | |
| 183 strcpy(SDL_cdlist[i], drive); | |
| 184 SDL_cdmode[i] = stbuf->st_rdev; | |
| 185 ++SDL_numcds; | |
| 186 #ifdef DEBUG_CDROM | |
| 187 fprintf(stderr, "Added CD-ROM drive: %s\n", drive); | |
| 188 #endif | |
| 189 } | |
| 190 } | |
| 191 | |
| 192 #ifdef USE_MNTENT | |
| 193 static void CheckMounts(const char *mtab) | |
| 194 { | |
| 195 FILE *mntfp; | |
| 196 struct mntent *mntent; | |
| 197 struct stat stbuf; | |
| 198 | |
| 199 mntfp = setmntent(mtab, "r"); | |
| 200 if ( mntfp != NULL ) { | |
|
139
ef23a1bf1244
Fixed potential buffer overflow in Linux CD code (thanks Ryan!)
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
201 char *tmp; |
|
ef23a1bf1244
Fixed potential buffer overflow in Linux CD code (thanks Ryan!)
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
202 char *mnt_type; |
|
ef23a1bf1244
Fixed potential buffer overflow in Linux CD code (thanks Ryan!)
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
203 char *mnt_dev; |
| 0 | 204 |
| 205 while ( (mntent=getmntent(mntfp)) != NULL ) { | |
|
139
ef23a1bf1244
Fixed potential buffer overflow in Linux CD code (thanks Ryan!)
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
206 mnt_type = malloc(strlen(mntent->mnt_type) + 1); |
|
ef23a1bf1244
Fixed potential buffer overflow in Linux CD code (thanks Ryan!)
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
207 if (mnt_type == NULL) |
|
ef23a1bf1244
Fixed potential buffer overflow in Linux CD code (thanks Ryan!)
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
208 continue; /* maybe you'll get lucky next time. */ |
|
ef23a1bf1244
Fixed potential buffer overflow in Linux CD code (thanks Ryan!)
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
209 |
|
ef23a1bf1244
Fixed potential buffer overflow in Linux CD code (thanks Ryan!)
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
210 mnt_dev = malloc(strlen(mntent->mnt_fsname) + 1); |
|
ef23a1bf1244
Fixed potential buffer overflow in Linux CD code (thanks Ryan!)
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
211 if (mnt_dev == NULL) { |
|
ef23a1bf1244
Fixed potential buffer overflow in Linux CD code (thanks Ryan!)
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
212 free(mnt_type); |
|
ef23a1bf1244
Fixed potential buffer overflow in Linux CD code (thanks Ryan!)
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
213 continue; |
|
ef23a1bf1244
Fixed potential buffer overflow in Linux CD code (thanks Ryan!)
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
214 } |
|
ef23a1bf1244
Fixed potential buffer overflow in Linux CD code (thanks Ryan!)
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
215 |
| 0 | 216 strcpy(mnt_type, mntent->mnt_type); |
| 217 strcpy(mnt_dev, mntent->mnt_fsname); | |
| 218 | |
| 219 /* Handle "supermount" filesystem mounts */ | |
| 220 if ( strcmp(mnt_type, MNTTYPE_SUPER) == 0 ) { | |
| 221 tmp = strstr(mntent->mnt_opts, "fs="); | |
| 222 if ( tmp ) { | |
|
247
b0f09f86378d
Fix crash with Linux supermount fstab entries (thanks Erno!)
Sam Lantinga <slouken@libsdl.org>
parents:
139
diff
changeset
|
223 free(mnt_type); |
|
b0f09f86378d
Fix crash with Linux supermount fstab entries (thanks Erno!)
Sam Lantinga <slouken@libsdl.org>
parents:
139
diff
changeset
|
224 mnt_type = strdup(tmp + strlen("fs=")); |
|
b0f09f86378d
Fix crash with Linux supermount fstab entries (thanks Erno!)
Sam Lantinga <slouken@libsdl.org>
parents:
139
diff
changeset
|
225 if ( mnt_type ) { |
|
b0f09f86378d
Fix crash with Linux supermount fstab entries (thanks Erno!)
Sam Lantinga <slouken@libsdl.org>
parents:
139
diff
changeset
|
226 tmp = strchr(mnt_type, ','); |
|
b0f09f86378d
Fix crash with Linux supermount fstab entries (thanks Erno!)
Sam Lantinga <slouken@libsdl.org>
parents:
139
diff
changeset
|
227 if ( tmp ) { |
|
b0f09f86378d
Fix crash with Linux supermount fstab entries (thanks Erno!)
Sam Lantinga <slouken@libsdl.org>
parents:
139
diff
changeset
|
228 *tmp = '\0'; |
|
b0f09f86378d
Fix crash with Linux supermount fstab entries (thanks Erno!)
Sam Lantinga <slouken@libsdl.org>
parents:
139
diff
changeset
|
229 } |
| 0 | 230 } |
| 231 } | |
| 232 tmp = strstr(mntent->mnt_opts, "dev="); | |
| 233 if ( tmp ) { | |
|
247
b0f09f86378d
Fix crash with Linux supermount fstab entries (thanks Erno!)
Sam Lantinga <slouken@libsdl.org>
parents:
139
diff
changeset
|
234 free(mnt_dev); |
|
b0f09f86378d
Fix crash with Linux supermount fstab entries (thanks Erno!)
Sam Lantinga <slouken@libsdl.org>
parents:
139
diff
changeset
|
235 mnt_dev = strdup(tmp + strlen("dev=")); |
|
b0f09f86378d
Fix crash with Linux supermount fstab entries (thanks Erno!)
Sam Lantinga <slouken@libsdl.org>
parents:
139
diff
changeset
|
236 if ( mnt_dev ) { |
|
b0f09f86378d
Fix crash with Linux supermount fstab entries (thanks Erno!)
Sam Lantinga <slouken@libsdl.org>
parents:
139
diff
changeset
|
237 tmp = strchr(mnt_dev, ','); |
|
b0f09f86378d
Fix crash with Linux supermount fstab entries (thanks Erno!)
Sam Lantinga <slouken@libsdl.org>
parents:
139
diff
changeset
|
238 if ( tmp ) { |
|
b0f09f86378d
Fix crash with Linux supermount fstab entries (thanks Erno!)
Sam Lantinga <slouken@libsdl.org>
parents:
139
diff
changeset
|
239 *tmp = '\0'; |
|
b0f09f86378d
Fix crash with Linux supermount fstab entries (thanks Erno!)
Sam Lantinga <slouken@libsdl.org>
parents:
139
diff
changeset
|
240 } |
| 0 | 241 } |
| 242 } | |
| 243 } | |
| 244 if ( strcmp(mnt_type, MNTTYPE_CDROM) == 0 ) { | |
| 245 #ifdef DEBUG_CDROM | |
| 246 fprintf(stderr, "Checking mount path from %s: %s mounted on %s of %s\n", | |
| 247 mtab, mnt_dev, mntent->mnt_dir, mnt_type); | |
| 248 #endif | |
| 249 if (CheckDrive(mnt_dev, mnt_type, &stbuf) > 0) { | |
| 250 AddDrive(mnt_dev, &stbuf); | |
| 251 } | |
| 252 } | |
|
139
ef23a1bf1244
Fixed potential buffer overflow in Linux CD code (thanks Ryan!)
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
253 free(mnt_dev); |
|
ef23a1bf1244
Fixed potential buffer overflow in Linux CD code (thanks Ryan!)
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
254 free(mnt_type); |
| 0 | 255 } |
| 256 endmntent(mntfp); | |
| 257 } | |
| 258 } | |
| 259 #endif /* USE_MNTENT */ | |
| 260 | |
| 261 int SDL_SYS_CDInit(void) | |
| 262 { | |
| 263 /* checklist: /dev/cdrom, /dev/hd?, /dev/scd? /dev/sr? */ | |
| 264 static char *checklist[] = { | |
| 265 "cdrom", "?a hd?", "?0 scd?", "?0 sr?", NULL | |
| 266 }; | |
| 267 char *SDLcdrom; | |
| 268 int i, j, exists; | |
| 269 char drive[32]; | |
| 270 struct stat stbuf; | |
| 271 | |
| 272 /* Fill in our driver capabilities */ | |
| 273 SDL_CDcaps.Name = SDL_SYS_CDName; | |
| 274 SDL_CDcaps.Open = SDL_SYS_CDOpen; | |
| 275 SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC; | |
| 276 SDL_CDcaps.Status = SDL_SYS_CDStatus; | |
| 277 SDL_CDcaps.Play = SDL_SYS_CDPlay; | |
| 278 SDL_CDcaps.Pause = SDL_SYS_CDPause; | |
| 279 SDL_CDcaps.Resume = SDL_SYS_CDResume; | |
| 280 SDL_CDcaps.Stop = SDL_SYS_CDStop; | |
| 281 SDL_CDcaps.Eject = SDL_SYS_CDEject; | |
| 282 SDL_CDcaps.Close = SDL_SYS_CDClose; | |
| 283 | |
| 284 /* Look in the environment for our CD-ROM drive list */ | |
| 285 SDLcdrom = getenv("SDL_CDROM"); /* ':' separated list of devices */ | |
| 286 if ( SDLcdrom != NULL ) { | |
| 287 char *cdpath, *delim; | |
| 288 cdpath = malloc(strlen(SDLcdrom)+1); | |
| 289 if ( cdpath != NULL ) { | |
| 290 strcpy(cdpath, SDLcdrom); | |
| 291 SDLcdrom = cdpath; | |
| 292 do { | |
| 293 delim = strchr(SDLcdrom, ':'); | |
| 294 if ( delim ) { | |
| 295 *delim++ = '\0'; | |
| 296 } | |
| 297 #ifdef DEBUG_CDROM | |
| 298 fprintf(stderr, "Checking CD-ROM drive from SDL_CDROM: %s\n", SDLcdrom); | |
| 299 #endif | |
| 300 if ( CheckDrive(SDLcdrom, NULL, &stbuf) > 0 ) { | |
| 301 AddDrive(SDLcdrom, &stbuf); | |
| 302 } | |
| 303 if ( delim ) { | |
| 304 SDLcdrom = delim; | |
| 305 } else { | |
| 306 SDLcdrom = NULL; | |
| 307 } | |
| 308 } while ( SDLcdrom ); | |
| 309 free(cdpath); | |
| 310 } | |
| 311 | |
| 312 /* If we found our drives, there's nothing left to do */ | |
| 313 if ( SDL_numcds > 0 ) { | |
| 314 return(0); | |
| 315 } | |
| 316 } | |
| 317 | |
| 318 #ifdef USE_MNTENT | |
| 319 /* Check /dev/cdrom first :-) */ | |
| 320 if (CheckDrive("/dev/cdrom", NULL, &stbuf) > 0) { | |
| 321 AddDrive("/dev/cdrom", &stbuf); | |
| 322 } | |
| 323 | |
| 324 /* Now check the currently mounted CD drives */ | |
| 325 CheckMounts(_PATH_MOUNTED); | |
| 326 | |
| 327 /* Finally check possible mountable drives in /etc/fstab */ | |
| 328 CheckMounts(_PATH_MNTTAB); | |
| 329 | |
| 330 /* If we found our drives, there's nothing left to do */ | |
| 331 if ( SDL_numcds > 0 ) { | |
| 332 return(0); | |
| 333 } | |
| 334 #endif /* USE_MNTENT */ | |
| 335 | |
| 336 /* Scan the system for CD-ROM drives. | |
| 337 Not always 100% reliable, so use the USE_MNTENT code above first. | |
| 338 */ | |
| 339 for ( i=0; checklist[i]; ++i ) { | |
| 340 if ( checklist[i][0] == '?' ) { | |
| 341 char *insert; | |
| 342 exists = 1; | |
| 343 for ( j=checklist[i][1]; exists; ++j ) { | |
| 344 sprintf(drive, "/dev/%s", &checklist[i][3]); | |
| 345 insert = strchr(drive, '?'); | |
| 346 if ( insert != NULL ) { | |
| 347 *insert = j; | |
| 348 } | |
| 349 #ifdef DEBUG_CDROM | |
| 350 fprintf(stderr, "Checking possible CD-ROM drive: %s\n", drive); | |
| 351 #endif | |
| 352 switch (CheckDrive(drive, NULL, &stbuf)) { | |
| 353 /* Drive exists and is a CD-ROM */ | |
| 354 case 1: | |
| 355 AddDrive(drive, &stbuf); | |
| 356 break; | |
| 357 /* Drive exists, but isn't a CD-ROM */ | |
| 358 case 0: | |
| 359 break; | |
| 360 /* Drive doesn't exist */ | |
| 361 case -1: | |
| 362 exists = 0; | |
| 363 break; | |
| 364 } | |
| 365 } | |
| 366 } else { | |
| 367 sprintf(drive, "/dev/%s", checklist[i]); | |
| 368 #ifdef DEBUG_CDROM | |
| 369 fprintf(stderr, "Checking possible CD-ROM drive: %s\n", drive); | |
| 370 #endif | |
| 371 if ( CheckDrive(drive, NULL, &stbuf) > 0 ) { | |
| 372 AddDrive(drive, &stbuf); | |
| 373 } | |
| 374 } | |
| 375 } | |
| 376 return(0); | |
| 377 } | |
| 378 | |
| 379 /* General ioctl() CD-ROM command function */ | |
| 380 static int SDL_SYS_CDioctl(int id, int command, void *arg) | |
| 381 { | |
| 382 int retval; | |
| 383 | |
| 384 retval = ioctl(id, command, arg); | |
| 385 if ( retval < 0 ) { | |
| 386 SDL_SetError("ioctl() error: %s", strerror(errno)); | |
| 387 } | |
| 388 return(retval); | |
| 389 } | |
| 390 | |
| 391 static const char *SDL_SYS_CDName(int drive) | |
| 392 { | |
| 393 return(SDL_cdlist[drive]); | |
| 394 } | |
| 395 | |
| 396 static int SDL_SYS_CDOpen(int drive) | |
| 397 { | |
|
1051
091350827e08
SDL_CDOpen() fails on Linux if data track on disc is mounted in the
Ryan C. Gordon <icculus@icculus.org>
parents:
998
diff
changeset
|
398 return(open(SDL_cdlist[drive], (O_RDONLY|O_NONBLOCK), 0)); |
| 0 | 399 } |
| 400 | |
| 401 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom) | |
| 402 { | |
| 403 struct cdrom_tochdr toc; | |
| 404 int i, okay; | |
| 405 struct cdrom_tocentry entry; | |
| 406 | |
| 407 okay = 0; | |
| 408 if ( SDL_SYS_CDioctl(cdrom->id, CDROMREADTOCHDR, &toc) == 0 ) { | |
| 409 cdrom->numtracks = toc.cdth_trk1-toc.cdth_trk0+1; | |
| 410 if ( cdrom->numtracks > SDL_MAX_TRACKS ) { | |
| 411 cdrom->numtracks = SDL_MAX_TRACKS; | |
| 412 } | |
| 413 /* Read all the track TOC entries */ | |
| 414 for ( i=0; i<=cdrom->numtracks; ++i ) { | |
| 415 if ( i == cdrom->numtracks ) { | |
| 416 cdrom->track[i].id = CDROM_LEADOUT; | |
| 417 } else { | |
| 418 cdrom->track[i].id = toc.cdth_trk0+i; | |
| 419 } | |
| 420 entry.cdte_track = cdrom->track[i].id; | |
| 421 entry.cdte_format = CDROM_MSF; | |
| 422 if ( SDL_SYS_CDioctl(cdrom->id, CDROMREADTOCENTRY, | |
| 423 &entry) < 0 ) { | |
| 424 break; | |
| 425 } else { | |
| 426 if ( entry.cdte_ctrl & CDROM_DATA_TRACK ) { | |
| 427 cdrom->track[i].type = SDL_DATA_TRACK; | |
| 428 } else { | |
| 429 cdrom->track[i].type = SDL_AUDIO_TRACK; | |
| 430 } | |
| 431 cdrom->track[i].offset = MSF_TO_FRAMES( | |
| 432 entry.cdte_addr.msf.minute, | |
| 433 entry.cdte_addr.msf.second, | |
| 434 entry.cdte_addr.msf.frame); | |
| 435 cdrom->track[i].length = 0; | |
| 436 if ( i > 0 ) { | |
| 437 cdrom->track[i-1].length = | |
| 438 cdrom->track[i].offset- | |
| 439 cdrom->track[i-1].offset; | |
| 440 } | |
| 441 } | |
| 442 } | |
| 443 if ( i == (cdrom->numtracks+1) ) { | |
| 444 okay = 1; | |
| 445 } | |
| 446 } | |
| 447 return(okay ? 0 : -1); | |
| 448 } | |
| 449 | |
| 450 /* Get CD-ROM status */ | |
| 451 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position) | |
| 452 { | |
| 453 CDstatus status; | |
| 454 struct cdrom_tochdr toc; | |
| 455 struct cdrom_subchnl info; | |
| 456 | |
| 457 info.cdsc_format = CDROM_MSF; | |
| 458 if ( ioctl(cdrom->id, CDROMSUBCHNL, &info) < 0 ) { | |
| 459 if ( ERRNO_TRAYEMPTY(errno) ) { | |
| 460 status = CD_TRAYEMPTY; | |
| 461 } else { | |
| 462 status = CD_ERROR; | |
| 463 } | |
| 464 } else { | |
| 465 switch (info.cdsc_audiostatus) { | |
| 466 case CDROM_AUDIO_INVALID: | |
| 467 case CDROM_AUDIO_NO_STATUS: | |
| 468 /* Try to determine if there's a CD available */ | |
| 469 if (ioctl(cdrom->id, CDROMREADTOCHDR, &toc)==0) | |
| 470 status = CD_STOPPED; | |
| 471 else | |
| 472 status = CD_TRAYEMPTY; | |
| 473 break; | |
| 474 case CDROM_AUDIO_COMPLETED: | |
| 475 status = CD_STOPPED; | |
| 476 break; | |
| 477 case CDROM_AUDIO_PLAY: | |
| 478 status = CD_PLAYING; | |
| 479 break; | |
| 480 case CDROM_AUDIO_PAUSED: | |
| 481 /* Workaround buggy CD-ROM drive */ | |
| 482 if ( info.cdsc_trk == CDROM_LEADOUT ) { | |
| 483 status = CD_STOPPED; | |
| 484 } else { | |
| 485 status = CD_PAUSED; | |
| 486 } | |
| 487 break; | |
| 488 default: | |
| 489 status = CD_ERROR; | |
| 490 break; | |
| 491 } | |
| 492 } | |
| 493 if ( position ) { | |
| 494 if ( status == CD_PLAYING || (status == CD_PAUSED) ) { | |
| 495 *position = MSF_TO_FRAMES( | |
| 496 info.cdsc_absaddr.msf.minute, | |
| 497 info.cdsc_absaddr.msf.second, | |
| 498 info.cdsc_absaddr.msf.frame); | |
| 499 } else { | |
| 500 *position = 0; | |
| 501 } | |
| 502 } | |
| 503 return(status); | |
| 504 } | |
| 505 | |
| 506 /* Start play */ | |
| 507 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length) | |
| 508 { | |
| 509 struct cdrom_msf playtime; | |
| 510 | |
| 511 FRAMES_TO_MSF(start, | |
| 512 &playtime.cdmsf_min0, &playtime.cdmsf_sec0, &playtime.cdmsf_frame0); | |
| 513 FRAMES_TO_MSF(start+length, | |
| 514 &playtime.cdmsf_min1, &playtime.cdmsf_sec1, &playtime.cdmsf_frame1); | |
| 515 #ifdef DEBUG_CDROM | |
| 516 fprintf(stderr, "Trying to play from %d:%d:%d to %d:%d:%d\n", | |
| 517 playtime.cdmsf_min0, playtime.cdmsf_sec0, playtime.cdmsf_frame0, | |
| 518 playtime.cdmsf_min1, playtime.cdmsf_sec1, playtime.cdmsf_frame1); | |
| 519 #endif | |
| 520 return(SDL_SYS_CDioctl(cdrom->id, CDROMPLAYMSF, &playtime)); | |
| 521 } | |
| 522 | |
| 523 /* Pause play */ | |
| 524 static int SDL_SYS_CDPause(SDL_CD *cdrom) | |
| 525 { | |
| 526 return(SDL_SYS_CDioctl(cdrom->id, CDROMPAUSE, 0)); | |
| 527 } | |
| 528 | |
| 529 /* Resume play */ | |
| 530 static int SDL_SYS_CDResume(SDL_CD *cdrom) | |
| 531 { | |
| 532 return(SDL_SYS_CDioctl(cdrom->id, CDROMRESUME, 0)); | |
| 533 } | |
| 534 | |
| 535 /* Stop play */ | |
| 536 static int SDL_SYS_CDStop(SDL_CD *cdrom) | |
| 537 { | |
| 538 return(SDL_SYS_CDioctl(cdrom->id, CDROMSTOP, 0)); | |
| 539 } | |
| 540 | |
| 541 /* Eject the CD-ROM */ | |
| 542 static int SDL_SYS_CDEject(SDL_CD *cdrom) | |
| 543 { | |
| 544 return(SDL_SYS_CDioctl(cdrom->id, CDROMEJECT, 0)); | |
| 545 } | |
| 546 | |
| 547 /* Close the CD-ROM handle */ | |
| 548 static void SDL_SYS_CDClose(SDL_CD *cdrom) | |
| 549 { | |
| 550 close(cdrom->id); | |
| 551 } | |
| 552 | |
| 553 void SDL_SYS_CDQuit(void) | |
| 554 { | |
| 555 int i; | |
| 556 | |
| 557 if ( SDL_numcds > 0 ) { | |
| 558 for ( i=0; i<SDL_numcds; ++i ) { | |
| 559 free(SDL_cdlist[i]); | |
| 560 } | |
| 561 SDL_numcds = 0; | |
| 562 } | |
| 563 } | |
| 564 |