| 1 | /* |
| 2 | Tru64 audio module for SDL (Simple DirectMedia Layer) |
| 3 | Copyright (C) 2003 |
| 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 | |
| 20 | */ |
| 21 | #include "SDL_config.h" |
| 22 | |
| 23 | #ifdef SDL_CDROM_OSF |
| 24 | |
| 25 | /* Functions for system-level CD-ROM audio control */ |
| 26 | |
| 27 | /* #define DEBUG_CDROM 1 */ |
| 28 | |
| 29 | #include <sys/types.h> |
| 30 | #include <dirent.h> |
| 31 | #include <sys/stat.h> |
| 32 | #include <fcntl.h> |
| 33 | #include <io/cam/cdrom.h> |
| 34 | #include <io/cam/rzdisk.h> |
| 35 | #include <io/common/devgetinfo.h> |
| 36 | |
| 37 | #include "SDL_cdrom.h" |
| 38 | #include "../SDL_syscdrom.h" |
| 39 | |
| 40 | /* The maximum number of CD-ROM drives we'll detect */ |
| 41 | #define MAX_DRIVES 16 |
| 42 | |
| 43 | /* A list of available CD-ROM drives */ |
| 44 | static char *SDL_cdlist[MAX_DRIVES]; |
| 45 | static dev_t SDL_cdmode[MAX_DRIVES]; |
| 46 | |
| 47 | /* The system-dependent CD control functions */ |
| 48 | static const char *SDL_SYS_CDName(int drive); |
| 49 | static int SDL_SYS_CDOpen(int drive); |
| 50 | static int SDL_SYS_CDGetTOC(SDL_CD *cdrom); |
| 51 | static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position); |
| 52 | static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length); |
| 53 | static int SDL_SYS_CDPause(SDL_CD *cdrom); |
| 54 | static int SDL_SYS_CDResume(SDL_CD *cdrom); |
| 55 | static int SDL_SYS_CDStop(SDL_CD *cdrom); |
| 56 | static int SDL_SYS_CDEject(SDL_CD *cdrom); |
| 57 | static void SDL_SYS_CDClose(SDL_CD *cdrom); |
| 58 | |
| 59 | /* Check a drive to see if it is a CD-ROM */ |
| 60 | /* Caution!! Not tested. */ |
| 61 | static int CheckDrive(char *drive, struct stat *stbuf) |
| 62 | { |
| 63 | int cdfd, is_cd = 0; |
| 64 | struct mode_sel_sns_params msp; |
| 65 | struct inquiry_info inq; |
| 66 | |
| 67 | #ifdef DEBUG_CDROM |
| 68 | char *devtype[] = {"Disk", "Tape", "Printer", "Processor", "WORM", |
| 69 | "CD-ROM", "Scanner", "Optical", "Changer", "Comm", "Unknown"}; |
| 70 | #endif |
| 71 | |
| 72 | bzero(&msp, sizeof(msp)); |
| 73 | bzero(&inq, sizeof(inq)); |
| 74 | |
| 75 | /* If it doesn't exist, return -1 */ |
| 76 | if ( stat(drive, stbuf) < 0 ) { |
| 77 | return(-1); |
| 78 | } |
| 79 | |
| 80 | if ( (cdfd = open(drive, (O_RDWR|O_NDELAY), 0)) >= 0 ) { |
| 81 | msp.msp_addr = (caddr_t) &inq; |
| 82 | msp.msp_pgcode = 0; |
| 83 | msp.msp_pgctrl = 0; |
| 84 | msp.msp_length = sizeof(inq); |
| 85 | msp.msp_setps = 0; |
| 86 | |
| 87 | if ( ioctl(cdfd, SCSI_GET_INQUIRY_DATA, &msp) ) |
| 88 | return (0); |
| 89 | |
| 90 | #ifdef DEBUG_CDROM |
| 91 | fprintf(stderr, "Device Type: %s\n", devtype[inq.perfdt]); |
| 92 | fprintf(stderr, "Vendor: %.8s\n", inq.vndrid); |
| 93 | fprintf(stderr, "Product: %.8s\n", inq.prodid); |
| 94 | fprintf(stderr, "Revision: %.8s\n", inq.revlvl); |
| 95 | #endif |
| 96 | if ( inq.perfdt == DTYPE_RODIRECT ) |
| 97 | is_cd = 1; |
| 98 | } |
| 99 | |
| 100 | return(is_cd); |
| 101 | } |
| 102 | |
| 103 | /* Add a CD-ROM drive to our list of valid drives */ |
| 104 | static void AddDrive(char *drive, struct stat *stbuf) |
| 105 | { |
| 106 | int i; |
| 107 | |
| 108 | if ( SDL_numcds < MAX_DRIVES ) { |
| 109 | /* Check to make sure it's not already in our list. |
| 110 | * This can happen when we see a drive via symbolic link. |
| 111 | * |
| 112 | */ |
| 113 | for ( i=0; i<SDL_numcds; ++i ) { |
| 114 | if ( stbuf->st_rdev == SDL_cdmode[i] ) { |
| 115 | #ifdef DEBUG_CDROM |
| 116 | fprintf(stderr, "Duplicate drive detected: %s == %s\n", drive, SDL_cdlist[i]); |
| 117 | #endif |
| 118 | return; |
| 119 | } |
| 120 | } |
| 121 | |
| 122 | /* Add this drive to our list */ |
| 123 | i = SDL_numcds; |
| 124 | SDL_cdlist[i] = SDL_strdup(drive); |
| 125 | if ( SDL_cdlist[i] == NULL ) { |
| 126 | SDL_OutOfMemory(); |
| 127 | return; |
| 128 | } |
| 129 | SDL_cdmode[i] = stbuf->st_rdev; |
| 130 | ++SDL_numcds; |
| 131 | #ifdef DEBUG_CDROM |
| 132 | fprintf(stderr, "Added CD-ROM drive: %s\n", drive); |
| 133 | #endif |
| 134 | } |
| 135 | } |
| 136 | |
| 137 | int SDL_SYS_CDInit(void) |
| 138 | { |
| 139 | /* checklist: |
| 140 | * |
| 141 | * Tru64 5.X (/dev/rdisk/cdrom?c) |
| 142 | * dir: /dev/rdisk, name: cdrom |
| 143 | * |
| 144 | * Digital UNIX 4.0X (/dev/rrz?c) |
| 145 | * dir: /dev, name: rrz |
| 146 | * |
| 147 | */ |
| 148 | struct { |
| 149 | char *dir; |
| 150 | char *name; |
| 151 | } checklist[] = { |
| 152 | {"/dev/rdisk", "cdrom"}, |
| 153 | {"/dev", "rrz"}, |
| 154 | {NULL, NULL}}; |
| 155 | char drive[32]; |
| 156 | char *SDLcdrom; |
| 157 | int i, j, exists; |
| 158 | struct stat stbuf; |
| 159 | |
| 160 | /* Fill in our driver capabilities */ |
| 161 | SDL_CDcaps.Name = SDL_SYS_CDName; |
| 162 | SDL_CDcaps.Open = SDL_SYS_CDOpen; |
| 163 | SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC; |
| 164 | SDL_CDcaps.Status = SDL_SYS_CDStatus; |
| 165 | SDL_CDcaps.Play = SDL_SYS_CDPlay; |
| 166 | SDL_CDcaps.Pause = SDL_SYS_CDPause; |
| 167 | SDL_CDcaps.Resume = SDL_SYS_CDResume; |
| 168 | SDL_CDcaps.Stop = SDL_SYS_CDStop; |
| 169 | SDL_CDcaps.Eject = SDL_SYS_CDEject; |
| 170 | SDL_CDcaps.Close = SDL_SYS_CDClose; |
| 171 | |
| 172 | |
| 173 | /* Look in the environment for our CD-ROM drive list */ |
| 174 | SDLcdrom = SDL_getenv("SDL_CDROM"); /* ':' separated list of devices */ |
| 175 | if ( SDLcdrom != NULL ) { |
| 176 | char *cdpath, *delim; |
| 177 | size_t len = SDL_strlen(SDLcdrom)+1; |
| 178 | cdpath = SDL_stack_alloc(char, len); |
| 179 | if ( cdpath != NULL ) { |
| 180 | SDL_strlcpy(cdpath, SDLcdrom, len); |
| 181 | SDLcdrom = cdpath; |
| 182 | do { |
| 183 | delim = SDL_strchr(SDLcdrom, ':'); |
| 184 | if ( delim ) { |
| 185 | *delim++ = '\0'; |
| 186 | } |
| 187 | if ( CheckDrive(SDLcdrom, &stbuf) > 0 ) { |
| 188 | AddDrive(SDLcdrom, &stbuf); |
| 189 | } |
| 190 | if ( delim ) { |
| 191 | SDLcdrom = delim; |
| 192 | } else { |
| 193 | SDLcdrom = NULL; |
| 194 | } |
| 195 | } while ( SDLcdrom ); |
| 196 | SDL_stack_free(cdpath); |
| 197 | } |
| 198 | |
| 199 | /* If we found our drives, there's nothing left to do */ |
| 200 | if ( SDL_numcds > 0 ) { |
| 201 | return(0); |
| 202 | } |
| 203 | } |
| 204 | /* Scan the system for CD-ROM drives */ |
| 205 | for ( i = 0; checklist[i].dir; ++i) { |
| 206 | DIR *devdir; |
| 207 | struct dirent *devent; |
| 208 | int name_len; |
| 209 | |
| 210 | devdir = opendir(checklist[i].dir); |
| 211 | if (devdir) { |
| 212 | name_len = SDL_strlen(checklist[i].name); |
| 213 | while (devent = readdir(devdir)) |
| 214 | if (SDL_memcmp(checklist[i].name, devent->d_name, name_len) == 0) |
| 215 | if (devent->d_name[devent->d_namlen-1] == 'c') { |
| 216 | SDL_snprintf(drive, SDL_arraysize(drive), "%s/%s", checklist[i].dir, devent->d_name); |
| 217 | #ifdef DEBUG_CDROM |
| 218 | fprintf(stderr, "Try to add drive: %s\n", drive); |
| 219 | #endif |
| 220 | if ( CheckDrive(drive, &stbuf) > 0 ) |
| 221 | AddDrive(drive, &stbuf); |
| 222 | } |
| 223 | closedir(devdir); |
| 224 | } else { |
| 225 | #ifdef DEBUG_CDROM |
| 226 | fprintf(stderr, "cannot open dir: %s\n", checklist[i].dir); |
| 227 | #endif |
| 228 | } |
| 229 | } |
| 230 | return (0); |
| 231 | } |
| 232 | |
| 233 | static const char *SDL_SYS_CDName(int drive) |
| 234 | { |
| 235 | return(SDL_cdlist[drive]); |
| 236 | } |
| 237 | |
| 238 | static int SDL_SYS_CDOpen(int drive) |
| 239 | { |
| 240 | /* O_RDWR: To use ioctl(fd, SCSI_STOP_UNIT) */ |
| 241 | return(open(SDL_cdlist[drive], (O_RDWR|O_NDELAY), 0)); |
| 242 | } |
| 243 | |
| 244 | static int SDL_SYS_CDGetTOC(SDL_CD *cdrom) |
| 245 | { |
| 246 | struct cd_toc toc; |
| 247 | struct cd_toc_header hdr; |
| 248 | struct cd_toc_entry *cdte; |
| 249 | int i; |
| 250 | int okay = 0; |
| 251 | if ( ioctl(cdrom->id, CDROM_TOC_HEADER, &hdr) ) { |
| 252 | fprintf(stderr,"ioctl error CDROM_TOC_HEADER\n"); |
| 253 | return -1; |
| 254 | } |
| 255 | cdrom->numtracks = hdr.th_ending_track - hdr.th_starting_track + 1; |
| 256 | if ( cdrom->numtracks > SDL_MAX_TRACKS ) { |
| 257 | cdrom->numtracks = SDL_MAX_TRACKS; |
| 258 | } |
| 259 | #ifdef DEBUG_CDROM |
| 260 | fprintf(stderr,"hdr.th_data_len1 = %d\n", hdr.th_data_len1); |
| 261 | fprintf(stderr,"hdr.th_data_len0 = %d\n", hdr.th_data_len0); |
| 262 | fprintf(stderr,"hdr.th_starting_track = %d\n", hdr.th_starting_track); |
| 263 | fprintf(stderr,"hdr.th_ending_track = %d\n", hdr.th_ending_track); |
| 264 | fprintf(stderr,"cdrom->numtracks = %d\n", cdrom->numtracks); |
| 265 | #endif |
| 266 | toc.toc_address_format = CDROM_LBA_FORMAT; |
| 267 | toc.toc_starting_track = 0; |
| 268 | toc.toc_alloc_length = (hdr.th_data_len1 << 8) + |
| 269 | hdr.th_data_len0 + sizeof(hdr); |
| 270 | if ( (toc.toc_buffer = alloca(toc.toc_alloc_length)) == NULL) { |
| 271 | fprintf(stderr,"cannot allocate toc.toc_buffer\n"); |
| 272 | return -1; |
| 273 | } |
| 274 | |
| 275 | bzero (toc.toc_buffer, toc.toc_alloc_length); |
| 276 | if (ioctl(cdrom->id, CDROM_TOC_ENTRYS, &toc)) { |
| 277 | fprintf(stderr,"ioctl error CDROM_TOC_ENTRYS\n"); |
| 278 | return -1; |
| 279 | } |
| 280 | |
| 281 | cdte =(struct cd_toc_entry *) ((char *) toc.toc_buffer + sizeof(hdr)); |
| 282 | for (i=0; i <= cdrom->numtracks; ++i) { |
| 283 | if (i == cdrom->numtracks ) { |
| 284 | cdrom->track[i].id = 0xAA;; |
| 285 | } else { |
| 286 | cdrom->track[i].id = hdr.th_starting_track + i; |
| 287 | } |
| 288 | |
| 289 | cdrom->track[i].type = |
| 290 | cdte[i].te_control & CDROM_DATA_TRACK; |
| 291 | cdrom->track[i].offset = |
| 292 | cdte[i].te_absaddr.lba.addr3 << 24 | |
| 293 | cdte[i].te_absaddr.lba.addr2 << 16 | |
| 294 | cdte[i].te_absaddr.lba.addr1 << 8 | |
| 295 | cdte[i].te_absaddr.lba.addr0; |
| 296 | cdrom->track[i].length = 0; |
| 297 | if ( i > 0 ) { |
| 298 | cdrom->track[i - 1].length = |
| 299 | cdrom->track[i].offset - |
| 300 | cdrom->track[i - 1].offset; |
| 301 | } |
| 302 | } |
| 303 | #ifdef DEBUG_CDROM |
| 304 | for (i = 0; i <= cdrom->numtracks; i++) { |
| 305 | fprintf(stderr,"toc_entry[%d].te_track_number = %d\n", |
| 306 | i,cdte[i].te_track_number); |
| 307 | fprintf(stderr,"cdrom->track[%d].id = %d\n", i,cdrom->track[i].id); |
| 308 | fprintf(stderr,"cdrom->track[%d].type = %x\n", i,cdrom->track[i].type); |
| 309 | fprintf(stderr,"cdrom->track[%d].offset = %d\n", i,cdrom->track[i].offset); |
| 310 | fprintf(stderr,"cdrom->track[%d].length = %d\n", i,cdrom->track[i].length); |
| 311 | } |
| 312 | #endif |
| 313 | if ( i == (cdrom->numtracks+1) ) { |
| 314 | okay = 1; |
| 315 | } |
| 316 | |
| 317 | return(okay ? 0 : -1); |
| 318 | } |
| 319 | |
| 320 | /* Get CD-ROM status */ |
| 321 | static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position) |
| 322 | { |
| 323 | CDstatus status; |
| 324 | struct cd_sub_channel sc; |
| 325 | struct cd_subc_channel_data scd; |
| 326 | |
| 327 | sc.sch_address_format = CDROM_LBA_FORMAT; |
| 328 | sc.sch_data_format = CDROM_CURRENT_POSITION; |
| 329 | sc.sch_track_number = 0; |
| 330 | sc.sch_alloc_length = sizeof(scd); |
| 331 | sc.sch_buffer = (caddr_t)&scd; |
| 332 | if ( ioctl(cdrom->id, CDROM_READ_SUBCHANNEL, &sc) ) { |
| 333 | status = CD_ERROR; |
| 334 | fprintf(stderr,"ioctl error CDROM_READ_SUBCHANNEL \n"); |
| 335 | } else { |
| 336 | switch (scd.scd_header.sh_audio_status) { |
| 337 | case AS_AUDIO_INVALID: |
| 338 | status = CD_STOPPED; |
| 339 | break; |
| 340 | case AS_PLAY_IN_PROGRESS: |
| 341 | status = CD_PLAYING; |
| 342 | break; |
| 343 | case AS_PLAY_PAUSED: |
| 344 | status = CD_PAUSED; |
| 345 | break; |
| 346 | case AS_PLAY_COMPLETED: |
| 347 | status = CD_STOPPED; |
| 348 | break; |
| 349 | case AS_PLAY_ERROR: |
| 350 | status = CD_ERROR; |
| 351 | break; |
| 352 | case AS_NO_STATUS: |
| 353 | status = CD_STOPPED; |
| 354 | break; |
| 355 | default: |
| 356 | status = CD_ERROR; |
| 357 | break; |
| 358 | } |
| 359 | #ifdef DEBUG_CDROM |
| 360 | fprintf(stderr,"scd.scd_header.sh_audio_status = %x\n", |
| 361 | scd.scd_header.sh_audio_status); |
| 362 | #endif |
| 363 | } |
| 364 | if (position) { |
| 365 | if (status == CD_PLAYING || (status == CD_PAUSED) ) { |
| 366 | *position = |
| 367 | scd.scd_position_data.scp_absaddr.lba.addr3 << 24 | |
| 368 | scd.scd_position_data.scp_absaddr.lba.addr2 << 16 | |
| 369 | scd.scd_position_data.scp_absaddr.lba.addr1 << 8 | |
| 370 | scd.scd_position_data.scp_absaddr.lba.addr0; |
| 371 | } else { |
| 372 | *position = 0; |
| 373 | } |
| 374 | } |
| 375 | |
| 376 | return status; |
| 377 | } |
| 378 | |
| 379 | /* Start play */ |
| 380 | static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length) |
| 381 | { |
| 382 | /* |
| 383 | * Play MSF |
| 384 | */ |
| 385 | struct cd_play_audio_msf msf; |
| 386 | int end; |
| 387 | |
| 388 | bzero(&msf, sizeof(msf)); |
| 389 | end = start +length; |
| 390 | FRAMES_TO_MSF(start + 150, /* LBA = 4500*M + 75*S + F - 150 */ |
| 391 | &msf.msf_starting_M_unit, |
| 392 | &msf.msf_starting_S_unit, |
| 393 | &msf.msf_starting_F_unit); |
| 394 | FRAMES_TO_MSF(end + 150, /* LBA = 4500*M + 75*S + F - 150 */ |
| 395 | &msf.msf_ending_M_unit, |
| 396 | &msf.msf_ending_S_unit, |
| 397 | &msf.msf_ending_F_unit); |
| 398 | |
| 399 | return(ioctl(cdrom->id, CDROM_PLAY_AUDIO_MSF, &msf)); |
| 400 | } |
| 401 | |
| 402 | /* Pause play */ |
| 403 | static int SDL_SYS_CDPause(SDL_CD *cdrom) |
| 404 | { |
| 405 | return(ioctl(cdrom->id, CDROM_PAUSE_PLAY)); |
| 406 | } |
| 407 | |
| 408 | /* Resume play */ |
| 409 | static int SDL_SYS_CDResume(SDL_CD *cdrom) |
| 410 | { |
| 411 | return(ioctl(cdrom->id, CDROM_RESUME_PLAY)); |
| 412 | } |
| 413 | |
| 414 | /* Stop play */ |
| 415 | static int SDL_SYS_CDStop(SDL_CD *cdrom) |
| 416 | { |
| 417 | return(ioctl(cdrom->id, SCSI_STOP_UNIT)); |
| 418 | } |
| 419 | |
| 420 | /* Eject the CD-ROM */ |
| 421 | static int SDL_SYS_CDEject(SDL_CD *cdrom) |
| 422 | { |
| 423 | return(ioctl(cdrom->id, CDROM_EJECT_CADDY)); |
| 424 | } |
| 425 | |
| 426 | /* Close the CD-ROM handle */ |
| 427 | static void SDL_SYS_CDClose(SDL_CD *cdrom) |
| 428 | { |
| 429 | close(cdrom->id); |
| 430 | } |
| 431 | |
| 432 | void SDL_SYS_CDQuit(void) |
| 433 | { |
| 434 | int i; |
| 435 | |
| 436 | if ( SDL_numcds > 0 ) { |
| 437 | for ( i=0; i<SDL_numcds; ++i ) { |
| 438 | SDL_free(SDL_cdlist[i]); |
| 439 | } |
| 440 | SDL_numcds = 0; |
| 441 | } |
| 442 | } |
| 443 | |
| 444 | #endif /* SDL_CDROM_OSF */ |