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 */ 445
