| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2009 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_BEOS |
| 25 | |
| 26 | /* Functions for system-level CD-ROM audio control on BeOS |
| 27 | (not completely implemented yet) |
| 28 | */ |
| 29 | |
| 30 | #include <sys/types.h> |
| 31 | #include <sys/stat.h> |
| 32 | #include <unistd.h> |
| 33 | |
| 34 | #include <scsi.h> |
| 35 | #include <Directory.h> |
| 36 | #include <Entry.h> |
| 37 | #include <Path.h> |
| 38 | |
| 39 | #include "SDL_cdrom.h" |
| 40 | extern "C" { |
| 41 | #include "../SDL_syscdrom.h" |
| 42 | } |
| 43 | |
| 44 | /* Constants to help us get at the SCSI table-of-contents info */ |
| 45 | #define CD_NUMTRACKS(toc) toc.toc_data[3] |
| 46 | #define CD_TRACK(toc, track) (&toc.toc_data[6+(track)*8]) |
| 47 | #define CD_TRACK_N(toc, track) CD_TRACK(toc, track)[0] |
| 48 | #define CD_TRACK_M(toc, track) CD_TRACK(toc, track)[3] |
| 49 | #define CD_TRACK_S(toc, track) CD_TRACK(toc, track)[4] |
| 50 | #define CD_TRACK_F(toc, track) CD_TRACK(toc, track)[5] |
| 51 | |
| 52 | /* Constants to help us get at the SCSI position info */ |
| 53 | #define POS_TRACK(pos) pos.position[6] |
| 54 | #define POS_ABS_M(pos) pos.position[9] |
| 55 | #define POS_ABS_S(pos) pos.position[10] |
| 56 | #define POS_ABS_F(pos) pos.position[11] |
| 57 | #define POS_REL_M(pos) pos.position[13] |
| 58 | #define POS_REL_S(pos) pos.position[14] |
| 59 | #define POS_REL_F(pos) pos.position[15] |
| 60 | |
| 61 | /* The maximum number of CD-ROM drives we'll detect */ |
| 62 | #define MAX_DRIVES 16 |
| 63 | |
| 64 | /* A list of available CD-ROM drives */ |
| 65 | static char *SDL_cdlist[MAX_DRIVES]; |
| 66 | |
| 67 | /* The system-dependent CD control functions */ |
| 68 | static const char *SDL_SYS_CDName(int drive); |
| 69 | static int SDL_SYS_CDOpen(int drive); |
| 70 | static int SDL_SYS_CDGetTOC(SDL_CD *cdrom); |
| 71 | static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position); |
| 72 | static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length); |
| 73 | static int SDL_SYS_CDPause(SDL_CD *cdrom); |
| 74 | static int SDL_SYS_CDResume(SDL_CD *cdrom); |
| 75 | static int SDL_SYS_CDStop(SDL_CD *cdrom); |
| 76 | static int SDL_SYS_CDEject(SDL_CD *cdrom); |
| 77 | static void SDL_SYS_CDClose(SDL_CD *cdrom); |
| 78 | int try_dir(const char *directory); |
| 79 | |
| 80 | |
| 81 | /* Check a drive to see if it is a CD-ROM */ |
| 82 | static int CheckDrive(char *drive) |
| 83 | { |
| 84 | struct stat stbuf; |
| 85 | int is_cd, cdfd; |
| 86 | device_geometry info; |
| 87 | |
| 88 | /* If it doesn't exist, return -1 */ |
| 89 | if ( stat(drive, &stbuf) < 0 ) { |
| 90 | return(-1); |
| 91 | } |
| 92 | |
| 93 | /* If it does exist, verify that it's an available CD-ROM */ |
| 94 | is_cd = 0; |
| 95 | cdfd = open(drive, 0); |
| 96 | if ( cdfd >= 0 ) { |
| 97 | if ( ioctl(cdfd, B_GET_GEOMETRY, &info) == B_NO_ERROR ) { |
| 98 | if ( info.device_type == B_CD ) { |
| 99 | is_cd = 1; |
| 100 | } |
| 101 | } |
| 102 | close(cdfd); |
| 103 | } else { |
| 104 | /* This can happen when the drive is open .. (?) */; |
| 105 | is_cd = 1; |
| 106 | } |
| 107 | return(is_cd); |
| 108 | } |
| 109 | |
| 110 | /* Add a CD-ROM drive to our list of valid drives */ |
| 111 | static void AddDrive(char *drive) |
| 112 | { |
| 113 | int i; |
| 114 | size_t len; |
| 115 | |
| 116 | if ( SDL_numcds < MAX_DRIVES ) { |
| 117 | /* Add this drive to our list */ |
| 118 | i = SDL_numcds; |
| 119 | len = SDL_strlen(drive)+1; |
| 120 | SDL_cdlist[i] = (char *)SDL_malloc(len); |
| 121 | if ( SDL_cdlist[i] == NULL ) { |
| 122 | SDL_OutOfMemory(); |
| 123 | return; |
| 124 | } |
| 125 | SDL_strlcpy(SDL_cdlist[i], drive, len); |
| 126 | ++SDL_numcds; |
| 127 | #ifdef CDROM_DEBUG |
| 128 | fprintf(stderr, "Added CD-ROM drive: %s\n", drive); |
| 129 | #endif |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | /* IDE bus scanning magic */ |
| 134 | enum { |
| 135 | IDE_GET_DEVICES_INFO = B_DEVICE_OP_CODES_END + 50, |
| 136 | }; |
| 137 | struct ide_ctrl_info { |
| 138 | bool ide_0_present; |
| 139 | bool ide_0_master_present; |
| 140 | bool ide_0_slave_present; |
| 141 | int ide_0_master_type; |
| 142 | int ide_0_slave_type; |
| 143 | bool ide_1_present; |
| 144 | bool ide_1_master_present; |
| 145 | bool ide_1_slave_present; |
| 146 | int ide_1_master_type; |
| 147 | int ide_1_slave_type; |
| 148 | }; |
| 149 | |
| 150 | int SDL_SYS_CDInit(void) |
| 151 | { |
| 152 | char *SDLcdrom; |
| 153 | int raw_fd; |
| 154 | struct ide_ctrl_info info; |
| 155 | |
| 156 | /* Fill in our driver capabilities */ |
| 157 | SDL_CDcaps.Name = SDL_SYS_CDName; |
| 158 | SDL_CDcaps.Open = SDL_SYS_CDOpen; |
| 159 | SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC; |
| 160 | SDL_CDcaps.Status = SDL_SYS_CDStatus; |
| 161 | SDL_CDcaps.Play = SDL_SYS_CDPlay; |
| 162 | SDL_CDcaps.Pause = SDL_SYS_CDPause; |
| 163 | SDL_CDcaps.Resume = SDL_SYS_CDResume; |
| 164 | SDL_CDcaps.Stop = SDL_SYS_CDStop; |
| 165 | SDL_CDcaps.Eject = SDL_SYS_CDEject; |
| 166 | SDL_CDcaps.Close = SDL_SYS_CDClose; |
| 167 | |
| 168 | /* Look in the environment for our CD-ROM drive list */ |
| 169 | SDLcdrom = SDL_getenv("SDL_CDROM"); /* ':' separated list of devices */ |
| 170 | if ( SDLcdrom != NULL ) { |
| 171 | char *cdpath, *delim; |
| 172 | size_t len = SDL_strlen(SDLcdrom)+1; |
| 173 | cdpath = SDL_stack_alloc(char, len); |
| 174 | if ( cdpath != NULL ) { |
| 175 | SDL_strlcpy(cdpath, SDLcdrom, len); |
| 176 | SDLcdrom = cdpath; |
| 177 | do { |
| 178 | delim = SDL_strchr(SDLcdrom, ':'); |
| 179 | if ( delim ) { |
| 180 | *delim++ = '\0'; |
| 181 | } |
| 182 | if ( CheckDrive(SDLcdrom) > 0 ) { |
| 183 | AddDrive(SDLcdrom); |
| 184 | } |
| 185 | if ( delim ) { |
| 186 | SDLcdrom = delim; |
| 187 | } else { |
| 188 | SDLcdrom = NULL; |
| 189 | } |
| 190 | } while ( SDLcdrom ); |
| 191 | SDL_stack_free(cdpath); |
| 192 | } |
| 193 | |
| 194 | /* If we found our drives, there's nothing left to do */ |
| 195 | if ( SDL_numcds > 0 ) { |
| 196 | return(0); |
| 197 | } |
| 198 | } |
| 199 | |
| 200 | /* Scan the system for CD-ROM drives */ |
| 201 | try_dir("/dev/disk"); |
| 202 | return 0; |
| 203 | } |
| 204 | |
| 205 | |
| 206 | int try_dir(const char *directory) |
| 207 | { |
| 208 | BDirectory dir; |
| 209 | dir.SetTo(directory); |
| 210 | if(dir.InitCheck() != B_NO_ERROR) { |
| 211 | return false; |
| 212 | } |
| 213 | dir.Rewind(); |
| 214 | BEntry entry; |
| 215 | while(dir.GetNextEntry(&entry) >= 0) { |
| 216 | BPath path; |
| 217 | const char *name; |
| 218 | entry_ref e; |
| 219 | |
| 220 | if(entry.GetPath(&path) != B_NO_ERROR) |
| 221 | continue; |
| 222 | name = path.Path(); |
| 223 | |
| 224 | if(entry.GetRef(&e) != B_NO_ERROR) |
| 225 | continue; |
| 226 | |
| 227 | if(entry.IsDirectory()) { |
| 228 | if(SDL_strcmp(e.name, "floppy") == 0) |
| 229 | continue; /* ignore floppy (it is not silent) */ |
| 230 | int devfd = try_dir(name); |
| 231 | if(devfd >= 0) |
| 232 | return devfd; |
| 233 | } |
| 234 | else { |
| 235 | int devfd; |
| 236 | device_geometry g; |
| 237 | |
| 238 | if(SDL_strcmp(e.name, "raw") != 0) |
| 239 | continue; /* ignore partitions */ |
| 240 | |
| 241 | devfd = open(name, O_RDONLY); |
| 242 | if(devfd < 0) |
| 243 | continue; |
| 244 | |
| 245 | if(ioctl(devfd, B_GET_GEOMETRY, &g, sizeof(g)) >= 0) { |
| 246 | if(g.device_type == B_CD) |
| 247 | { |
| 248 | AddDrive(strdup(name)); |
| 249 | } |
| 250 | } |
| 251 | close(devfd); |
| 252 | } |
| 253 | } |
| 254 | return B_ERROR; |
| 255 | } |
| 256 | |
| 257 | |
| 258 | /* General ioctl() CD-ROM command function */ |
| 259 | static int SDL_SYS_CDioctl(int index, int command, void *arg) |
| 260 | { |
| 261 | int okay; |
| 262 | int fd; |
| 263 | |
| 264 | okay = 0; |
| 265 | fd = open(SDL_cdlist[index], 0); |
| 266 | if ( fd >= 0 ) { |
| 267 | if ( ioctl(fd, command, arg) == B_NO_ERROR ) { |
| 268 | okay = 1; |
| 269 | } |
| 270 | close(fd); |
| 271 | } |
| 272 | return(okay ? 0 : -1); |
| 273 | } |
| 274 | |
| 275 | static const char *SDL_SYS_CDName(int drive) |
| 276 | { |
| 277 | return(SDL_cdlist[drive]); |
| 278 | } |
| 279 | |
| 280 | static int SDL_SYS_CDOpen(int drive) |
| 281 | { |
| 282 | return(drive); |
| 283 | } |
| 284 | |
| 285 | static int SDL_SYS_CDGetTOC(SDL_CD *cdrom) |
| 286 | { |
| 287 | int i; |
| 288 | scsi_toc toc; |
| 289 | |
| 290 | if ( SDL_SYS_CDioctl(cdrom->id, B_SCSI_GET_TOC, &toc) == 0 ) { |
| 291 | cdrom->numtracks = CD_NUMTRACKS(toc); |
| 292 | if ( cdrom->numtracks > SDL_MAX_TRACKS ) { |
| 293 | cdrom->numtracks = SDL_MAX_TRACKS; |
| 294 | } |
| 295 | for ( i=0; i<=cdrom->numtracks; ++i ) { |
| 296 | cdrom->track[i].id = CD_TRACK_N(toc, i); |
| 297 | /* FIXME: How do we tell on BeOS? */ |
| 298 | cdrom->track[i].type = SDL_AUDIO_TRACK; |
| 299 | cdrom->track[i].offset = MSF_TO_FRAMES( |
| 300 | CD_TRACK_M(toc, i), |
| 301 | CD_TRACK_S(toc, i), |
| 302 | CD_TRACK_F(toc, i)); |
| 303 | cdrom->track[i].length = 0; |
| 304 | if ( i > 0 ) { |
| 305 | cdrom->track[i-1].length = |
| 306 | cdrom->track[i].offset- |
| 307 | cdrom->track[i-1].offset; |
| 308 | } |
| 309 | } |
| 310 | return(0); |
| 311 | } else { |
| 312 | return(-1); |
| 313 | } |
| 314 | } |
| 315 | |
| 316 | /* Get CD-ROM status */ |
| 317 | static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position) |
| 318 | { |
| 319 | CDstatus status; |
| 320 | int fd; |
| 321 | int cur_frame; |
| 322 | scsi_position pos; |
| 323 | |
| 324 | fd = open(SDL_cdlist[cdrom->id], 0); |
| 325 | cur_frame = 0; |
| 326 | if ( fd >= 0 ) { |
| 327 | if ( ioctl(fd, B_SCSI_GET_POSITION, &pos) == B_NO_ERROR ) { |
| 328 | cur_frame = MSF_TO_FRAMES( |
| 329 | POS_ABS_M(pos), POS_ABS_S(pos), POS_ABS_F(pos)); |
| 330 | } |
| 331 | if ( ! pos.position[1] || (pos.position[1] >= 0x13) || |
| 332 | ((pos.position[1] == 0x12) && (!pos.position[6])) ) { |
| 333 | status = CD_STOPPED; |
| 334 | } else |
| 335 | if ( pos.position[1] == 0x11 ) { |
| 336 | status = CD_PLAYING; |
| 337 | } else { |
| 338 | status = CD_PAUSED; |
| 339 | } |
| 340 | close(fd); |
| 341 | } else { |
| 342 | status = CD_TRAYEMPTY; |
| 343 | } |
| 344 | if ( position ) { |
| 345 | *position = cur_frame; |
| 346 | } |
| 347 | return(status); |
| 348 | } |
| 349 | |
| 350 | /* Start play */ |
| 351 | static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length) |
| 352 | { |
| 353 | int okay; |
| 354 | int fd; |
| 355 | scsi_play_position pos; |
| 356 | |
| 357 | okay = 0; |
| 358 | fd = open(SDL_cdlist[cdrom->id], 0); |
| 359 | if ( fd >= 0 ) { |
| 360 | FRAMES_TO_MSF(start, &pos.start_m, &pos.start_s, &pos.start_f); |
| 361 | FRAMES_TO_MSF(start+length, &pos.end_m, &pos.end_s, &pos.end_f); |
| 362 | if ( ioctl(fd, B_SCSI_PLAY_POSITION, &pos) == B_NO_ERROR ) { |
| 363 | okay = 1; |
| 364 | } |
| 365 | close(fd); |
| 366 | } |
| 367 | return(okay ? 0 : -1); |
| 368 | } |
| 369 | |
| 370 | /* Pause play */ |
| 371 | static int SDL_SYS_CDPause(SDL_CD *cdrom) |
| 372 | { |
| 373 | return(SDL_SYS_CDioctl(cdrom->id, B_SCSI_PAUSE_AUDIO, 0)); |
| 374 | } |
| 375 | |
| 376 | /* Resume play */ |
| 377 | static int SDL_SYS_CDResume(SDL_CD *cdrom) |
| 378 | { |
| 379 | return(SDL_SYS_CDioctl(cdrom->id, B_SCSI_RESUME_AUDIO, 0)); |
| 380 | } |
| 381 | |
| 382 | /* Stop play */ |
| 383 | static int SDL_SYS_CDStop(SDL_CD *cdrom) |
| 384 | { |
| 385 | return(SDL_SYS_CDioctl(cdrom->id, B_SCSI_STOP_AUDIO, 0)); |
| 386 | } |
| 387 | |
| 388 | /* Eject the CD-ROM */ |
| 389 | static int SDL_SYS_CDEject(SDL_CD *cdrom) |
| 390 | { |
| 391 | return(SDL_SYS_CDioctl(cdrom->id, B_SCSI_EJECT, 0)); |
| 392 | } |
| 393 | |
| 394 | /* Close the CD-ROM handle */ |
| 395 | static void SDL_SYS_CDClose(SDL_CD *cdrom) |
| 396 | { |
| 397 | close(cdrom->id); |
| 398 | } |
| 399 | |
| 400 | void SDL_SYS_CDQuit(void) |
| 401 | { |
| 402 | int i; |
| 403 | |
| 404 | if ( SDL_numcds > 0 ) { |
| 405 | for ( i=0; i<SDL_numcds; ++i ) { |
| 406 | SDL_free(SDL_cdlist[i]); |
| 407 | } |
| 408 | SDL_numcds = 0; |
| 409 | } |
| 410 | } |
| 411 | |
| 412 | #endif /* SDL_CDROM_BEOS */ |