cdcontrol.c revision 13865
1/* 2 * Compact Disc Control Utility by Serge V. Vakulenko, <vak@cronyx.ru>. 3 * Based on the non-X based CD player by Jean-Marc Zucconi and 4 * Andrey A. Chernov. 5 */ 6#include <stdio.h> 7#include <stdlib.h> 8#include <string.h> 9#include <unistd.h> 10#include <errno.h> 11#include <sys/file.h> 12#include <sys/cdio.h> 13#include <sys/ioctl.h> 14 15#define VERSION "1.1" 16 17/* 18 * Audio Status Codes 19 */ 20#define ASTS_INVALID 0x00 /* Audio status byte not valid */ 21#define ASTS_PLAYING 0x11 /* Audio play operation in progress */ 22#define ASTS_PAUSED 0x12 /* Audio play operation paused */ 23#define ASTS_COMPLETED 0x13 /* Audio play operation successfully completed */ 24#define ASTS_ERROR 0x14 /* Audio play operation stopped due to error */ 25#define ASTS_VOID 0x15 /* No current audio status to return */ 26 27struct cmdtab { 28 int command; 29 char *name; 30 char *args; 31} cmdtab[] = { 32#define CMD_DEBUG 1 33 { CMD_DEBUG, "Debug", "[ on | off | reset ]", }, 34#define CMD_EJECT 2 35 { CMD_EJECT, "Eject", "", }, 36#define CMD_HELP 3 37 { CMD_HELP, "?", 0, }, 38 { CMD_HELP, "Help", "", }, 39#define CMD_INFO 4 40 { CMD_INFO, "INFo", "", }, 41#define CMD_INJECT 5 42 { CMD_INJECT, "INJect", "", }, 43#define CMD_PAUSE 6 44 { CMD_PAUSE, "PAuse", "", }, 45#define CMD_PLAY 7 46 { CMD_PLAY, "PLay", "min1:sec1[.fr1] [min2:sec2[.fr2]]", }, 47 { CMD_PLAY, "PLay", "track1[.index1] [track2.[index2]]", }, 48 { CMD_PLAY, "PLay", "[#block [len]]", }, 49#define CMD_QUIT 8 50 { CMD_QUIT, "Quit", "", }, 51#define CMD_RESUME 9 52 { CMD_RESUME, "Resume", "", }, 53#define CMD_STOP 10 54 { CMD_STOP, "Stop", "", }, 55#define CMD_VOLUME 11 56 { CMD_VOLUME, "Volume", "<l> <r> | left | right | mute | mono | stereo", }, 57 { 0, 0, }, 58}; 59 60struct cd_toc_entry toc_buffer[100]; 61 62char *cdname; 63int fd = -1; 64int verbose = 1; 65 66extern char *optarg; 67extern int optind; 68 69int setvol (int, int); 70int read_toc_entrys (int); 71int play_msf (int, int, int, int, int, int); 72int play_track (int, int, int, int); 73int get_vol (int *, int *); 74int status (int *, int *, int *, int *); 75int open_cd (void); 76int play (char *arg); 77int info (char *arg); 78char *input (int*); 79void prtrack (struct cd_toc_entry *e, int lastflag); 80void lba2msf (int lba, u_char *m, u_char *s, u_char *f); 81int msf2lba (u_char m, u_char s, u_char f); 82int play_blocks (int blk, int len); 83int run (int cmd, char *arg); 84char *parse (char *buf, int *cmd); 85 86extern int errno; 87 88void help () 89{ 90 struct cmdtab *c; 91 92 for (c=cmdtab; c->name; ++c) { 93 if (! c->args) 94 continue; 95 printf ("\t%s", c->name); 96 if (*c->args) 97 printf (" %s", c->args); 98 printf ("\n"); 99 } 100} 101 102void usage () 103{ 104 printf ("Usage:\n\tcdcontrol [ -vs ] [ -f disc ] [ command args... ]\n"); 105 printf ("Options:\n"); 106 printf ("\t-v - verbose mode\n"); 107 printf ("\t-s - silent mode\n"); 108 printf ("\t-f disc - device name such as /dev/cd0c\n"); 109 printf ("\tDISC - shell variable with device name\n"); 110 printf ("Commands:\n"); 111 help (); 112 exit (1); 113} 114 115int main (int argc, char **argv) 116{ 117 int cmd; 118 char *arg; 119 120 cdname = getenv ("DISC"); 121 if (! cdname) 122 cdname = getenv ("CDPLAY"); 123 124 for (;;) { 125 switch (getopt (argc, argv, "svhf:")) { 126 case EOF: 127 break; 128 case 's': 129 verbose = 0; 130 continue; 131 case 'v': 132 verbose = 2; 133 continue; 134 case 'f': 135 cdname = optarg; 136 continue; 137 case 'h': 138 default: 139 usage (); 140 } 141 break; 142 } 143 argc -= optind; 144 argv += optind; 145 146 if (argc > 0 && strcasecmp (*argv, "help") == 0) 147 usage (); 148 149 if (! cdname) { 150 fprintf (stderr, "No CD device name specified.\n"); 151 usage (); 152 } 153 154 if (argc > 0) { 155 char buf[80], *p; 156 int len; 157 158 for (p=buf; argc-- > 0; ++argv) { 159 len = strlen (*argv); 160 if (p + len >= buf + sizeof (buf) - 1) 161 usage (); 162 if (p > buf) 163 *p++ = ' '; 164 strcpy (p, *argv); 165 p += len; 166 } 167 *p = 0; 168 arg = parse (buf, &cmd); 169 return run (cmd, arg); 170 } 171 172 if (verbose == 1) 173 verbose = isatty (0); 174 if (verbose) { 175 printf ("Compact Disc Control Utility, Version %s\n", VERSION); 176 printf ("Type `?' for command list\n\n"); 177 } 178 179 for (;;) { 180 arg = input (&cmd); 181 if (run (cmd, arg) < 0) { 182 if (verbose) 183 perror ("cdcontrol"); 184 close (fd); 185 fd = -1; 186 } 187 fflush (stdout); 188 } 189} 190 191int run (int cmd, char *arg) 192{ 193 int l, r, rc; 194 195 switch (cmd) { 196 case CMD_QUIT: 197 exit (0); 198 199 default: 200 case CMD_HELP: 201 help (); 202 return (0); 203 204 case CMD_INFO: 205 if (fd<0 && ! open_cd ()) return (0); 206 return info (arg); 207 208 case CMD_PAUSE: 209 if (fd<0 && ! open_cd ()) return (0); 210 return ioctl (fd, CDIOCPAUSE); 211 212 case CMD_RESUME: 213 if (fd<0 && ! open_cd ()) return (0); 214 return ioctl (fd, CDIOCRESUME); 215 216 case CMD_STOP: 217 if (fd<0 && ! open_cd ()) return (0); 218 return ioctl (fd, CDIOCSTOP); 219 220 case CMD_DEBUG: 221 if (fd<0 && ! open_cd ()) return (0); 222 if (strcasecmp (arg, "on") == 0) 223 return ioctl (fd, CDIOCSETDEBUG); 224 if (strcasecmp (arg, "off") == 0) 225 return ioctl (fd, CDIOCCLRDEBUG); 226 if (strcasecmp (arg, "reset") == 0) 227 return ioctl (fd, CDIOCRESET); 228 printf ("Invalid command arguments\n"); 229 return (0); 230 231 case CMD_EJECT: 232 if (fd<0 && ! open_cd ()) return (0); 233 (void) ioctl (fd, CDIOCALLOW); 234 rc = ioctl (fd, CDIOCEJECT); 235 if (rc < 0) 236 return (rc); 237 return (0); 238 239 case CMD_INJECT: 240 if (fd<0 && ! open_cd ()) return (0); 241 rc = ioctl (fd, CDIOCCLOSE); 242 if (rc < 0) 243 return (rc); 244 close(fd); 245 fd = -1; 246 return (0); 247 248 case CMD_PLAY: 249 if (fd<0 && ! open_cd ()) return (0); 250 return play (arg); 251 252 case CMD_VOLUME: 253 if (fd<0 && ! open_cd ()) return (0); 254 255 if (strcasecmp (arg, "left") == 0) 256 return ioctl (fd, CDIOCSETLEFT); 257 else if (strcasecmp (arg, "right") == 0) 258 return ioctl (fd, CDIOCSETRIGHT); 259 else if (strcasecmp (arg, "mute") == 0) 260 return ioctl (fd, CDIOCSETMUTE); 261 else if (strcasecmp (arg, "mono") == 0) 262 return ioctl (fd, CDIOCSETMONO); 263 else if (strcasecmp (arg, "stereo") == 0) 264 return ioctl (fd, CDIOCSETSTERIO); 265 266 if (2 != sscanf (arg, "%d %d", &l, &r)) { 267 printf ("Invalid command arguments\n"); 268 return (0); 269 } 270 return setvol (l, r); 271 } 272} 273 274int play (char *arg) 275{ 276 struct ioc_toc_header h; 277 int rc, n, start, end = 0, istart = 1, iend = 1; 278 279 rc = ioctl (fd, CDIOREADTOCHEADER, &h); 280 if (rc < 0) 281 return (rc); 282 283 n = h.ending_track - h.starting_track + 1; 284 rc = read_toc_entrys ((n + 1) * sizeof (struct cd_toc_entry)); 285 if (rc < 0) 286 return (rc); 287 288 if (! *arg) 289 /* 290 * Play the whole disc 291 */ 292 return play_blocks (0, msf2lba (toc_buffer[n].addr.msf.minute, 293 toc_buffer[n].addr.msf.second, 294 toc_buffer[n].addr.msf.frame)); 295 296 if (strchr (arg, '#')) { 297 /* 298 * Play block #blk [ len ] 299 */ 300 int blk, len = 0; 301 302 if (2 != sscanf (arg, "#%d%d", &blk, &len) && 303 1 != sscanf (arg, "#%d", &blk)) { 304err: printf ("Invalid command arguments\n"); 305 return (0); 306 } 307 if (len == 0) 308 len = msf2lba (toc_buffer[n].addr.msf.minute, 309 toc_buffer[n].addr.msf.second, 310 toc_buffer[n].addr.msf.frame) - blk; 311 return play_blocks (blk, len); 312 } 313 314 if (strchr (arg, ':')) { 315 /* 316 * Play MSF m1:s1 [ .f1 ] [ m2:s2 [ .f2 ] ] 317 */ 318 int m1, m2 = 0, s1, s2 = 0, f1 = 0, f2 = 0; 319 320 if (6 != sscanf (arg, "%d:%d.%d%d:%d.%d", &m1, &s1, &f1, &m2, &s2, &f2) && 321 5 != sscanf (arg, "%d:%d.%d%d:%d", &m1, &s1, &f1, &m2, &s2) && 322 5 != sscanf (arg, "%d:%d%d:%d.%d", &m1, &s1, &m2, &s2, &f2) && 323 3 != sscanf (arg, "%d:%d.%d", &m1, &s1, &f1) && 324 4 != sscanf (arg, "%d:%d%d:%d", &m1, &s1, &m2, &s2) && 325 2 != sscanf (arg, "%d:%d", &m1, &s1)) 326 goto err; 327 if (m2 == 0) { 328 m2 = toc_buffer[n].addr.msf.minute; 329 s2 = toc_buffer[n].addr.msf.second; 330 f2 = toc_buffer[n].addr.msf.frame; 331 } 332 return play_msf (m1, s1, f1, m2, s2, f2); 333 } 334 335 /* 336 * Play track trk1 [ .idx1 ] [ trk2 [ .idx2 ] ] 337 */ 338 if (4 != sscanf (arg, "%d.%d%d.%d", &start, &istart, &end, &iend) && 339 3 != sscanf (arg, "%d.%d%d", &start, &istart, &end) && 340 3 != sscanf (arg, "%d%d.%d", &start, &end, &iend) && 341 2 != sscanf (arg, "%d.%d", &start, &istart) && 342 2 != sscanf (arg, "%d%d", &start, &end) && 343 1 != sscanf (arg, "%d", &start)) 344 goto err; 345 if (end == 0) 346 end = n; 347 return play_track (start, istart, end, iend); 348} 349 350char *strstatus (int sts) 351{ 352 switch (sts) { 353 case ASTS_INVALID: return ("invalid"); 354 case ASTS_PLAYING: return ("playing"); 355 case ASTS_PAUSED: return ("paused"); 356 case ASTS_COMPLETED: return ("completed"); 357 case ASTS_ERROR: return ("error"); 358 case ASTS_VOID: return ("void"); 359 default: return ("??"); 360 } 361} 362 363int info (char *arg) 364{ 365 struct ioc_toc_header h; 366 struct ioc_vol v; 367 int rc, i, n, trk, m, s, f; 368 369 rc = status (&trk, &m, &s, &f); 370 if (rc >= 0) 371 if (verbose) 372 printf ("Audio status = %d<%s>, current track = %d, current position = %d:%02d.%02d\n", 373 rc, strstatus (rc), trk, m, s, f); 374 else 375 printf ("%d %d %d:%02d.%02d\n", rc, trk, m, s, f); 376 else 377 printf ("No current status info\n"); 378 379 rc = ioctl (fd, CDIOCGETVOL, &v); 380 if (rc >= 0) 381 if (verbose) 382 printf ("Left volume = %d, right volume = %d\n", 383 v.vol[0], v.vol[1]); 384 else 385 printf ("%d %d\n", v.vol[0], v.vol[1]); 386 else 387 printf ("No volume info\n"); 388 389 rc = ioctl (fd, CDIOREADTOCHEADER, &h); 390 if (rc >= 0) 391 if (verbose) 392 printf ("Starting track = %d, ending track = %d, TOC size = %d bytes\n", 393 h.starting_track, h.ending_track, h.len); 394 else 395 printf ("%d %d %d\n", h.starting_track, 396 h.ending_track, h.len); 397 else { 398 perror ("getting toc header"); 399 return (rc); 400 } 401 402 n = h.ending_track - h.starting_track + 1; 403 rc = read_toc_entrys ((n + 1) * sizeof (struct cd_toc_entry)); 404 if (rc < 0) 405 return (rc); 406 if (verbose) { 407 printf ("track start duration block length type\n"); 408 printf ("-------------------------------------------------\n"); 409 } 410 for (i = 0; i < n; i++) { 411 printf ("%5d ", toc_buffer[i].track); 412 prtrack (toc_buffer + i, 0); 413 } 414 printf (" end "); 415 prtrack (toc_buffer + n, 1); 416 return (0); 417} 418 419void lba2msf (int lba, u_char *m, u_char *s, u_char *f) 420{ 421 lba += 150; /* block start offset */ 422 lba &= 0xffffff; /* negative lbas use only 24 bits */ 423 *m = lba / (60 * 75); 424 lba %= (60 * 75); 425 *s = lba / 75; 426 *f = lba % 75; 427} 428 429int msf2lba (u_char m, u_char s, u_char f) 430{ 431 return (((m * 60) + s) * 75 + f) - 150; 432} 433 434void prtrack (struct cd_toc_entry *e, int lastflag) 435{ 436 int block, next, len; 437 u_char m, s, f; 438 439 /* Print track start */ 440 printf ("%2d:%02d.%02d ", e->addr.msf.minute, 441 e->addr.msf.second, e->addr.msf.frame); 442 443 block = msf2lba (e->addr.msf.minute, e->addr.msf.second, 444 e->addr.msf.frame); 445 if (lastflag) { 446 /* Last track -- print block */ 447 printf (" - %6d - -\n", block); 448 return; 449 } 450 451 next = msf2lba (e[1].addr.msf.minute, e[1].addr.msf.second, 452 e[1].addr.msf.frame); 453 len = next - block; 454 lba2msf (len, &m, &s, &f); 455 456 /* Print duration, block, length, type */ 457 printf ("%2d:%02d.%02d %6d %6d %5s\n", m, s, f, block, len, 458 e->control & 4 ? "data" : "audio"); 459} 460 461int play_track (int tstart, int istart, int tend, int iend) 462{ 463 struct ioc_play_track t; 464 465 t.start_track = tstart; 466 t.start_index = istart; 467 t.end_track = tend; 468 t.end_index = iend; 469 return ioctl (fd, CDIOCPLAYTRACKS, &t); 470} 471 472int play_blocks (int blk, int len) 473{ 474 struct ioc_play_blocks t; 475 476 t.blk = blk; 477 t.len = len; 478 return ioctl (fd, CDIOCPLAYBLOCKS, &t); 479} 480 481int setvol (int l, int r) 482{ 483 struct ioc_vol v; 484 485 v.vol[0] = l; 486 v.vol[1] = r; 487 v.vol[2] = 0; 488 v.vol[3] = 0; 489 return ioctl (fd, CDIOCSETVOL, &v); 490} 491 492int read_toc_entrys (int len) 493{ 494 struct ioc_read_toc_entry t; 495 496 t.address_format = CD_MSF_FORMAT; 497 t.starting_track = 0; 498 t.data_len = len; 499 t.data = toc_buffer; 500 return ioctl (fd, CDIOREADTOCENTRYS, (char *) &t); 501} 502 503int play_msf (int start_m, int start_s, int start_f, 504 int end_m, int end_s, int end_f) 505{ 506 struct ioc_play_msf a; 507 508 a.start_m = start_m; 509 a.start_s = start_s; 510 a.start_f = start_f; 511 a.end_m = end_m; 512 a.end_s = end_s; 513 a.end_f = end_f; 514 return ioctl (fd, CDIOCPLAYMSF, (char *) &a); 515} 516 517int status (int *trk, int *min, int *sec, int *frame) 518{ 519 struct ioc_read_subchannel s; 520 struct cd_sub_channel_info data; 521 522 bzero (&s, sizeof (s)); 523 s.data = &data; 524 s.data_len = sizeof (data); 525 s.address_format = CD_MSF_FORMAT; 526 s.data_format = CD_CURRENT_POSITION; 527 if (ioctl (fd, CDIOCREADSUBCHANNEL, (char *) &s) < 0) 528 return -1; 529 *trk = s.data->what.position.track_number; 530 *min = s.data->what.position.reladdr.msf.minute; 531 *sec = s.data->what.position.reladdr.msf.second; 532 *frame = s.data->what.position.reladdr.msf.frame; 533 return s.data->header.audio_status; 534} 535 536char *input (int *cmd) 537{ 538 static char buf[80]; 539 char *p; 540 541 do { 542 if (verbose) 543 fprintf (stderr, "cd> "); 544 if (! fgets (buf, sizeof (buf), stdin)) { 545 *cmd = CMD_QUIT; 546 return 0; 547 } 548 p = parse (buf, cmd); 549 } while (! p); 550 return (p); 551} 552 553char *parse (char *buf, int *cmd) 554{ 555 struct cmdtab *c; 556 char *p; 557 int len; 558 559 for (p=buf; *p; ++p) 560 if (*p == '\t') 561 *p = ' '; 562 else if (*p == '\n') 563 *p = 0; 564 565 for (p=buf; *p; ++p) 566 if (*p == ' ') { 567 *p++ = 0; 568 break; 569 } 570 while (*p == ' ') 571 ++p; 572 573 len = strlen (buf); 574 if (! len) 575 return (0); 576 *cmd = -1; 577 for (c=cmdtab; c->name; ++c) { 578 /* Try short command form. */ 579 if (! c->args && len == strlen (c->name) && 580 strncasecmp (buf, c->name, len) == 0) { 581 *cmd = c->command; 582 break; 583 } 584 585 /* Try long form. */ 586 if (strncasecmp (buf, c->name, len) != 0) 587 continue; 588 589 /* Check inambiguity. */ 590 if (*cmd != -1 && *cmd != c->command) { 591 fprintf (stderr, "Ambiguous command\n"); 592 return (0); 593 } 594 *cmd = c->command; 595 } 596 if (*cmd == -1) { 597 fprintf (stderr, "Invalid command, enter ``help'' for command list\n"); 598 return (0); 599 } 600 return p; 601} 602 603int open_cd () 604{ 605 char devbuf[80]; 606 607 if (fd > -1) 608 return (1); 609 if (*cdname == '/') 610 strcpy (devbuf, cdname); 611 else if (*cdname == 'r') 612 sprintf (devbuf, "/dev/%s", cdname); 613 else 614 sprintf (devbuf, "/dev/r%s", cdname); 615 fd = open (devbuf, O_RDONLY); 616 if (fd < 0 && errno == ENOENT) { 617 strcat (devbuf, "c"); 618 fd = open (devbuf, O_RDONLY); 619 } 620 if (fd < 0) { 621 if (errno != ENXIO) { 622 perror (devbuf); 623 exit (1); 624 } 625 /* open says 'Device not configured' if no cd in */ 626 fprintf (stderr, "open: No CD in\n"); 627 return (0); 628 } 629 return (1); 630} 631