cdcontrol.c revision 63070 
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 * Fixed and further modified on 5-Sep-1995 by Jukka Ukkonen <jau@funet.fi>.
7 *
8 * 11-Sep-1995: Jukka A. Ukkonen <jau@funet.fi>
9 *              A couple of further fixes to my own earlier "fixes".
10 *
11 * 18-Sep-1995: Jukka A. Ukkonen <jau@funet.fi>
12 *              Added an ability to specify addresses relative to the
13 *              beginning of a track. This is in fact a variation of
14 *              doing the simple play_msf() call.
15 *
16 * 11-Oct-1995: Serge V.Vakulenko <vak@cronyx.ru>
17 *              New eject algorithm.
18 *              Some code style reformatting.
19 */
20
21#ifndef lint
22static const char rcsid[] =
23  "$FreeBSD: head/usr.sbin/cdcontrol/cdcontrol.c 63070 2000-07-13 12:55:50Z mckay $";
24#endif /* not lint */
25
26#include <ctype.h>
27#include <err.h>
28#include <errno.h>
29#include <stdio.h>
30#include <stdlib.h>
31#include <string.h>
32#include <unistd.h>
33#include <sys/file.h>
34#include <sys/cdio.h>
35#include <sys/ioctl.h>
36#include <sys/param.h>
37#include <histedit.h>
38
39#define VERSION "2.0"
40
41#define ASTS_INVALID    0x00  /* Audio status byte not valid */
42#define ASTS_PLAYING    0x11  /* Audio play operation in progress */
43#define ASTS_PAUSED     0x12  /* Audio play operation paused */
44#define ASTS_COMPLETED  0x13  /* Audio play operation successfully completed */
45#define ASTS_ERROR      0x14  /* Audio play operation stopped due to error */
46#define ASTS_VOID       0x15  /* No current audio status to return */
47
48#ifndef DEFAULT_CD_DRIVE
49#  define DEFAULT_CD_DRIVE  "/dev/cd0c"
50#endif
51
52#ifndef DEFAULT_CD_PARTITION
53#  define DEFAULT_CD_PARTITION  "c"
54#endif
55
56#define CMD_DEBUG       1
57#define CMD_EJECT       2
58#define CMD_HELP        3
59#define CMD_INFO        4
60#define CMD_PAUSE       5
61#define CMD_PLAY        6
62#define CMD_QUIT        7
63#define CMD_RESUME      8
64#define CMD_STOP        9
65#define CMD_VOLUME      10
66#define CMD_CLOSE       11
67#define CMD_RESET       12
68#define CMD_SET         13
69#define CMD_STATUS      14
70#define STATUS_AUDIO    0x1
71#define STATUS_MEDIA    0x2
72#define STATUS_VOLUME   0x4
73
74struct cmdtab {
75	int command;
76	char *name;
77	unsigned  min;
78	char *args;
79} cmdtab[] = {
80{ CMD_CLOSE,    "close",        1, "" },
81{ CMD_DEBUG,    "debug",        1, "on | off" },
82{ CMD_EJECT,    "eject",        1, "" },
83{ CMD_HELP,     "?",            1, 0 },
84{ CMD_HELP,     "help",         1, "" },
85{ CMD_INFO,     "info",         1, "" },
86{ CMD_PAUSE,    "pause",        2, "" },
87{ CMD_PLAY,     "play",         1, "min1:sec1[.fram1] [min2:sec2[.fram2]]" },
88{ CMD_PLAY,     "play",         1, "track1[.index1] [track2[.index2]]" },
89{ CMD_PLAY,     "play",         1, "tr1 m1:s1[.f1] [[tr2] [m2:s2[.f2]]]" },
90{ CMD_PLAY,     "play",         1, "[#block [len]]" },
91{ CMD_QUIT,     "quit",         1, "" },
92{ CMD_RESET,    "reset",        4, "" },
93{ CMD_RESUME,   "resume",       1, "" },
94{ CMD_SET,      "set",          2, "msf | lba" },
95{ CMD_STATUS,   "status",       1, "[audio | media | volume]" },
96{ CMD_STOP,     "stop",         3, "" },
97{ CMD_VOLUME,   "volume",       1, "<l> <r> | left | right | mute | mono | stereo" },
98{ 0, }
99};
100
101struct cd_toc_entry     toc_buffer[100];
102
103const char      *cdname;
104int             fd = -1;
105int             verbose = 1;
106int             msf = 1;
107
108int             setvol __P((int, int));
109int             read_toc_entrys __P((int));
110int             play_msf __P((int, int, int, int, int, int));
111int             play_track __P((int, int, int, int));
112int             get_vol __P((int *, int *));
113int             status __P((int *, int *, int *, int *));
114int             open_cd __P((void));
115int             play __P((char *arg));
116int             info __P((char *arg));
117int             pstatus __P((char *arg));
118char            *input __P((int *));
119void            prtrack __P((struct cd_toc_entry *e, int lastflag));
120void            lba2msf __P((unsigned long lba,
121                            u_char *m, u_char *s, u_char *f));
122unsigned int    msf2lba __P((u_char m, u_char s, u_char f));
123int             play_blocks __P((int blk, int len));
124int             run __P((int cmd, char *arg));
125char            *parse __P((char *buf, int *cmd));
126
127void help ()
128{
129	struct cmdtab *c;
130	char *s, n;
131	int i;
132
133	for (c=cmdtab; c->name; ++c) {
134		if (! c->args)
135			continue;
136		printf("\t");
137		for (i = c->min, s = c->name; *s; s++, i--) {
138			if (i > 0)
139				n = toupper(*s);
140			else
141				n = *s;
142			putchar(n);
143		}
144		if (*c->args)
145			printf (" %s", c->args);
146		printf ("\n");
147	}
148	printf ("\n\tThe word \"play\" is not required for the play commands.\n");
149	printf ("\tThe plain target address is taken as a synonym for play.\n");
150}
151
152void usage ()
153{
154	fprintf (stderr, "usage: cdcontrol [-sv] [-f device] [command ...]\n");
155	exit (1);
156}
157
158int main (int argc, char **argv)
159{
160	int cmd;
161	char *arg;
162
163	cdname = getenv ("MUSIC_CD");
164	if (! cdname)
165		cdname = getenv ("CD_DRIVE");
166	if (! cdname)
167		cdname = getenv ("DISC");
168	if (! cdname)
169		cdname = getenv ("CDPLAY");
170
171	for (;;) {
172		switch (getopt (argc, argv, "svhf:")) {
173		case EOF:
174			break;
175		case 's':
176			verbose = 0;
177			continue;
178		case 'v':
179			verbose = 2;
180			continue;
181		case 'f':
182			cdname = optarg;
183			continue;
184		case 'h':
185		default:
186			usage ();
187		}
188		break;
189	}
190	argc -= optind;
191	argv += optind;
192
193	if (argc > 0 && ! strcasecmp (*argv, "help"))
194		usage ();
195
196	if (! cdname) {
197		cdname = DEFAULT_CD_DRIVE;
198		warnx("no CD device name specified, defaulting to %s", cdname);
199	}
200
201	if (argc > 0) {
202		char buf[80], *p;
203		int len;
204
205		for (p=buf; argc-->0; ++argv) {
206			len = strlen (*argv);
207
208			if (p + len >= buf + sizeof (buf) - 1)
209				usage ();
210
211			if (p > buf)
212				*p++ = ' ';
213
214			strcpy (p, *argv);
215			p += len;
216		}
217		*p = 0;
218		arg = parse (buf, &cmd);
219		return (run (cmd, arg));
220	}
221
222	if (verbose == 1)
223		verbose = isatty (0);
224
225	if (verbose) {
226		printf ("Compact Disc Control utility, version %s\n", VERSION);
227		printf ("Type `?' for command list\n\n");
228	}
229
230	for (;;) {
231		arg = input (&cmd);
232		if (run (cmd, arg) < 0) {
233			if (verbose)
234				warn(NULL);
235			close (fd);
236			fd = -1;
237		}
238		fflush (stdout);
239	}
240}
241
242int run (int cmd, char *arg)
243{
244	int l, r, rc;
245
246	switch (cmd) {
247
248	case CMD_QUIT:
249		exit (0);
250
251	case CMD_INFO:
252		if (fd < 0 && ! open_cd ())
253			return (0);
254
255		return info (arg);
256
257	case CMD_STATUS:
258		if (fd < 0 && ! open_cd ())
259			return (0);
260
261		return pstatus (arg);
262
263	case CMD_PAUSE:
264		if (fd < 0 && ! open_cd ())
265			return (0);
266
267		return ioctl (fd, CDIOCPAUSE);
268
269	case CMD_RESUME:
270		if (fd < 0 && ! open_cd ())
271			return (0);
272
273		return ioctl (fd, CDIOCRESUME);
274
275	case CMD_STOP:
276		if (fd < 0 && ! open_cd ())
277			return (0);
278
279		rc = ioctl (fd, CDIOCSTOP);
280
281		(void) ioctl (fd, CDIOCALLOW);
282
283		return (rc);
284
285	case CMD_RESET:
286		if (fd < 0 && ! open_cd ())
287			return (0);
288
289		rc = ioctl (fd, CDIOCRESET);
290		if (rc < 0)
291			return rc;
292		close(fd);
293		fd = -1;
294		return (0);
295
296	case CMD_DEBUG:
297		if (fd < 0 && ! open_cd ())
298			return (0);
299
300		if (! strcasecmp (arg, "on"))
301			return ioctl (fd, CDIOCSETDEBUG);
302
303		if (! strcasecmp (arg, "off"))
304			return ioctl (fd, CDIOCCLRDEBUG);
305
306		warnx("invalid command arguments");
307
308		return (0);
309
310	case CMD_EJECT:
311		if (fd < 0 && ! open_cd ())
312			return (0);
313
314		(void) ioctl (fd, CDIOCALLOW);
315		rc = ioctl (fd, CDIOCEJECT);
316		if (rc < 0)
317			return (rc);
318		return (0);
319
320	case CMD_CLOSE:
321		if (fd < 0 && ! open_cd ())
322			return (0);
323
324		(void) ioctl (fd, CDIOCALLOW);
325		rc = ioctl (fd, CDIOCCLOSE);
326		if (rc < 0)
327			return (rc);
328		close(fd);
329		fd = -1;
330		return (0);
331
332	case CMD_PLAY:
333		if (fd < 0 && ! open_cd ())
334			return (0);
335
336		while (isspace (*arg))
337			arg++;
338
339		return play (arg);
340
341	case CMD_SET:
342		if (! strcasecmp (arg, "msf"))
343			msf = 1;
344		else if (! strcasecmp (arg, "lba"))
345			msf = 0;
346		else
347			warnx("invalid command arguments");
348		return (0);
349
350	case CMD_VOLUME:
351		if (fd < 0 && !open_cd ())
352			return (0);
353
354		if (! strncasecmp (arg, "left", strlen(arg)))
355			return ioctl (fd, CDIOCSETLEFT);
356
357		if (! strncasecmp (arg, "right", strlen(arg)))
358			return ioctl (fd, CDIOCSETRIGHT);
359
360		if (! strncasecmp (arg, "mono", strlen(arg)))
361			return ioctl (fd, CDIOCSETMONO);
362
363		if (! strncasecmp (arg, "stereo", strlen(arg)))
364			return ioctl (fd, CDIOCSETSTERIO);
365
366		if (! strncasecmp (arg, "mute", strlen(arg)))
367			return ioctl (fd, CDIOCSETMUTE);
368
369		if (2 != sscanf (arg, "%d %d", &l, &r)) {
370			warnx("invalid command arguments");
371			return (0);
372		}
373
374		return setvol (l, r);
375
376	default:
377	case CMD_HELP:
378		help ();
379		return (0);
380
381	}
382}
383
384int play (char *arg)
385{
386	struct ioc_toc_header h;
387	int rc, n, start, end = 0, istart = 1, iend = 1;
388
389	rc = ioctl (fd, CDIOREADTOCHEADER, &h);
390
391	if (rc < 0)
392		return (rc);
393
394	n = h.ending_track - h.starting_track + 1;
395	rc = read_toc_entrys ((n + 1) * sizeof (struct cd_toc_entry));
396
397	if (rc < 0)
398		return (rc);
399
400	if (! arg || ! *arg) {
401		/* Play the whole disc */
402		if (msf)
403			return play_blocks (0, msf2lba (toc_buffer[n].addr.msf.minute,
404							toc_buffer[n].addr.msf.second,
405							toc_buffer[n].addr.msf.frame));
406		else
407			return play_blocks (0, ntohl(toc_buffer[n].addr.lba));
408	}
409
410	if (strchr (arg, '#')) {
411		/* Play block #blk [ len ] */
412		int blk, len = 0;
413
414		if (2 != sscanf (arg, "#%d%d", &blk, &len) &&
415		    1 != sscanf (arg, "#%d", &blk))
416			goto Clean_up;
417
418		if (len == 0) {
419			if (msf)
420				len = msf2lba (toc_buffer[n].addr.msf.minute,
421					       toc_buffer[n].addr.msf.second,
422					       toc_buffer[n].addr.msf.frame) - blk;
423			else
424				len = ntohl(toc_buffer[n].addr.lba) - blk;
425		}
426		return play_blocks (blk, len);
427	}
428
429	if (strchr (arg, ':')) {
430		/*
431		 * Play MSF m1:s1 [ .f1 ] [ m2:s2 [ .f2 ] ]
432		 *
433		 * Will now also undestand timed addresses relative
434		 * to the beginning of a track in the form...
435		 *
436		 *      tr1 m1:s1[.f1] [[tr2] [m2:s2[.f2]]]
437		 */
438		unsigned tr1, tr2;
439		unsigned m1, m2, s1, s2, f1, f2;
440		unsigned char tm, ts, tf;
441
442		tr2 = m2 = s2 = f2 = f1 = 0;
443		if (8 == sscanf (arg, "%d %d:%d.%d %d %d:%d.%d",
444		    &tr1, &m1, &s1, &f1, &tr2, &m2, &s2, &f2))
445			goto Play_Relative_Addresses;
446
447		tr2 = m2 = s2 = f2 = f1 = 0;
448		if (7 == sscanf (arg, "%d %d:%d %d %d:%d.%d",
449		    &tr1, &m1, &s1, &tr2, &m2, &s2, &f2))
450			goto Play_Relative_Addresses;
451
452		tr2 = m2 = s2 = f2 = f1 = 0;
453		if (7 == sscanf (arg, "%d %d:%d.%d %d %d:%d",
454		    &tr1, &m1, &s1, &f1, &tr2, &m2, &s2))
455			goto Play_Relative_Addresses;
456
457		tr2 = m2 = s2 = f2 = f1 = 0;
458		if (7 == sscanf (arg, "%d %d:%d.%d %d:%d.%d",
459		    &tr1, &m1, &s1, &f1, &m2, &s2, &f2))
460			goto Play_Relative_Addresses;
461
462		tr2 = m2 = s2 = f2 = f1 = 0;
463		if (6 == sscanf (arg, "%d %d:%d.%d %d:%d",
464		    &tr1, &m1, &s1, &f1, &m2, &s2))
465			goto Play_Relative_Addresses;
466
467		tr2 = m2 = s2 = f2 = f1 = 0;
468		if (6 == sscanf (arg, "%d %d:%d %d:%d.%d",
469		    &tr1, &m1, &s1, &m2, &s2, &f2))
470			goto Play_Relative_Addresses;
471
472		tr2 = m2 = s2 = f2 = f1 = 0;
473		if (6 == sscanf (arg, "%d %d:%d.%d %d %d",
474		    &tr1, &m1, &s1, &f1, &tr2, &m2))
475			goto Play_Relative_Addresses;
476
477		tr2 = m2 = s2 = f2 = f1 = 0;
478		if (5 == sscanf (arg, "%d %d:%d %d:%d", &tr1, &m1, &s1, &m2, &s2))
479			goto Play_Relative_Addresses;
480
481		tr2 = m2 = s2 = f2 = f1 = 0;
482		if (5 == sscanf (arg, "%d %d:%d %d %d",
483		    &tr1, &m1, &s1, &tr2, &m2))
484			goto Play_Relative_Addresses;
485
486		tr2 = m2 = s2 = f2 = f1 = 0;
487		if (5 == sscanf (arg, "%d %d:%d.%d %d",
488		    &tr1, &m1, &s1, &f1, &tr2))
489			goto Play_Relative_Addresses;
490
491		tr2 = m2 = s2 = f2 = f1 = 0;
492		if (4 == sscanf (arg, "%d %d:%d %d", &tr1, &m1, &s1, &tr2))
493			goto Play_Relative_Addresses;
494
495		tr2 = m2 = s2 = f2 = f1 = 0;
496		if (4 == sscanf (arg, "%d %d:%d.%d", &tr1, &m1, &s1, &f1))
497			goto Play_Relative_Addresses;
498
499		tr2 = m2 = s2 = f2 = f1 = 0;
500		if (3 == sscanf (arg, "%d %d:%d", &tr1, &m1, &s1))
501			goto Play_Relative_Addresses;
502
503		tr2 = m2 = s2 = f2 = f1 = 0;
504		goto Try_Absolute_Timed_Addresses;
505
506Play_Relative_Addresses:
507		if (! tr1)
508			tr1 = 1;
509		else if (tr1 > n)
510			tr1 = n;
511
512		if (msf) {
513			tm = toc_buffer[tr1].addr.msf.minute;
514			ts = toc_buffer[tr1].addr.msf.second;
515			tf = toc_buffer[tr1].addr.msf.frame;
516		} else
517			lba2msf(ntohl(toc_buffer[tr1].addr.lba),
518				&tm, &ts, &tf);
519		if ((m1 > tm)
520		    || ((m1 == tm)
521		    && ((s1 > ts)
522		    || ((s1 == ts)
523		    && (f1 > tf))))) {
524			printf ("Track %d is not that long.\n", tr1);
525			return (0);
526		}
527
528		tr1--;
529
530		f1 += tf;
531		if (f1 >= 75) {
532			s1 += f1 / 75;
533			f1 %= 75;
534		}
535
536		s1 += ts;
537		if (s1 >= 60) {
538			m1 += s1 / 60;
539			s1 %= 60;
540		}
541
542		m1 += tm;
543
544		if (! tr2) {
545			if (m2 || s2 || f2) {
546				tr2 = tr1;
547				f2 += f1;
548				if (f2 >= 75) {
549					s2 += f2 / 75;
550					f2 %= 75;
551				}
552
553				s2 += s1;
554				if (s2 > 60) {
555					m2 += s2 / 60;
556					s2 %= 60;
557				}
558
559				m2 += m1;
560			} else {
561				tr2 = n;
562				if (msf) {
563					m2 = toc_buffer[n].addr.msf.minute;
564					s2 = toc_buffer[n].addr.msf.second;
565					f2 = toc_buffer[n].addr.msf.frame;
566				} else {
567					lba2msf(ntohl(toc_buffer[n].addr.lba),
568						&tm, &ts, &tf);
569					m2 = tm;
570					s2 = ts;
571					f2 = tf;
572				}
573			}
574		} else if (tr2 > n) {
575			tr2 = n;
576			m2 = s2 = f2 = 0;
577		} else {
578			if (m2 || s2 || f2)
579				tr2--;
580			if (msf) {
581				tm = toc_buffer[tr2].addr.msf.minute;
582				ts = toc_buffer[tr2].addr.msf.second;
583				tf = toc_buffer[tr2].addr.msf.frame;
584			} else
585				lba2msf(ntohl(toc_buffer[tr2].addr.lba),
586					&tm, &ts, &tf);
587			f2 += tf;
588			if (f2 >= 75) {
589				s2 += f2 / 75;
590				f2 %= 75;
591			}
592
593			s2 += ts;
594			if (s2 > 60) {
595				m2 += s2 / 60;
596				s2 %= 60;
597			}
598
599			m2 += tm;
600		}
601
602		if (msf) {
603			tm = toc_buffer[n].addr.msf.minute;
604			ts = toc_buffer[n].addr.msf.second;
605			tf = toc_buffer[n].addr.msf.frame;
606		} else
607			lba2msf(ntohl(toc_buffer[n].addr.lba),
608				&tm, &ts, &tf);
609		if ((tr2 < n)
610		    && ((m2 > tm)
611		    || ((m2 == tm)
612		    && ((s2 > ts)
613		    || ((s2 == ts)
614		    && (f2 > tf)))))) {
615			printf ("The playing time of the disc is not that long.\n");
616			return (0);
617		}
618		return (play_msf (m1, s1, f1, m2, s2, f2));
619
620Try_Absolute_Timed_Addresses:
621		if (6 != sscanf (arg, "%d:%d.%d%d:%d.%d",
622			&m1, &s1, &f1, &m2, &s2, &f2) &&
623		    5 != sscanf (arg, "%d:%d.%d%d:%d", &m1, &s1, &f1, &m2, &s2) &&
624		    5 != sscanf (arg, "%d:%d%d:%d.%d", &m1, &s1, &m2, &s2, &f2) &&
625		    3 != sscanf (arg, "%d:%d.%d", &m1, &s1, &f1) &&
626		    4 != sscanf (arg, "%d:%d%d:%d", &m1, &s1, &m2, &s2) &&
627		    2 != sscanf (arg, "%d:%d", &m1, &s1))
628			goto Clean_up;
629
630		if (m2 == 0) {
631			if (msf) {
632				m2 = toc_buffer[n].addr.msf.minute;
633				s2 = toc_buffer[n].addr.msf.second;
634				f2 = toc_buffer[n].addr.msf.frame;
635			} else {
636				lba2msf(ntohl(toc_buffer[n].addr.lba),
637					&tm, &ts, &tf);
638				m2 = tm;
639				s2 = ts;
640				f2 = tf;
641			}
642		}
643		return play_msf (m1, s1, f1, m2, s2, f2);
644	}
645
646	/*
647	 * Play track trk1 [ .idx1 ] [ trk2 [ .idx2 ] ]
648	 */
649	if (4 != sscanf (arg, "%d.%d%d.%d", &start, &istart, &end, &iend) &&
650	    3 != sscanf (arg, "%d.%d%d", &start, &istart, &end) &&
651	    3 != sscanf (arg, "%d%d.%d", &start, &end, &iend) &&
652	    2 != sscanf (arg, "%d.%d", &start, &istart) &&
653	    2 != sscanf (arg, "%d%d", &start, &end) &&
654	    1 != sscanf (arg, "%d", &start))
655		goto Clean_up;
656
657	if (end == 0)
658		end = n;
659	return (play_track (start, istart, end, iend));
660
661Clean_up:
662	warnx("invalid command arguments");
663	return (0);
664}
665
666char *strstatus (int sts)
667{
668	switch (sts) {
669	case ASTS_INVALID:   return ("invalid");
670	case ASTS_PLAYING:   return ("playing");
671	case ASTS_PAUSED:    return ("paused");
672	case ASTS_COMPLETED: return ("completed");
673	case ASTS_ERROR:     return ("error");
674	case ASTS_VOID:      return ("void");
675	default:             return ("??");
676	}
677}
678
679int pstatus (char *arg)
680{
681	struct ioc_vol v;
682	struct ioc_read_subchannel ss;
683	struct cd_sub_channel_info data;
684	int rc, trk, m, s, f;
685	int what = 0;
686	char *p;
687
688	while ((p = strtok(arg, " \t"))) {
689	    arg = 0;
690	    if (!strncasecmp(p, "audio", strlen(p)))
691		what |= STATUS_AUDIO;
692	    else if (!strncasecmp(p, "media", strlen(p)))
693		what |= STATUS_MEDIA;
694	    else if (!strncasecmp(p, "volume", strlen(p)))
695		what |= STATUS_VOLUME;
696	    else {
697		warnx("invalid command arguments");
698		return 0;
699	    }
700	}
701	if (!what)
702	    what = STATUS_AUDIO|STATUS_MEDIA|STATUS_VOLUME;
703	if (what & STATUS_AUDIO) {
704	    rc = status (&trk, &m, &s, &f);
705	    if (rc >= 0)
706		if (verbose)
707		    printf ("Audio status = %d<%s>, current track = %d, current position = %d:%02d.%02d\n",
708			    rc, strstatus (rc), trk, m, s, f);
709		else
710		    printf ("%d %d %d:%02d.%02d\n", rc, trk, m, s, f);
711	    else
712		printf ("No current status info available\n");
713	}
714	if (what & STATUS_MEDIA) {
715	    bzero (&ss, sizeof (ss));
716	    ss.data = &data;
717	    ss.data_len = sizeof (data);
718	    ss.address_format = msf ? CD_MSF_FORMAT : CD_LBA_FORMAT;
719	    ss.data_format = CD_MEDIA_CATALOG;
720	    rc = ioctl (fd, CDIOCREADSUBCHANNEL, (char *) &ss);
721	    if (rc >= 0) {
722		printf("Media catalog is %sactive",
723		       ss.data->what.media_catalog.mc_valid ? "": "in");
724		if (ss.data->what.media_catalog.mc_valid &&
725		    ss.data->what.media_catalog.mc_number[0])
726		    printf(", number \"%.15s\"",
727			   ss.data->what.media_catalog.mc_number);
728		putchar('\n');
729	    } else
730		printf("No media catalog info available\n");
731	}
732	if (what & STATUS_VOLUME) {
733	    rc = ioctl (fd, CDIOCGETVOL, &v);
734	    if (rc >= 0)
735		if (verbose)
736		    printf ("Left volume = %d, right volume = %d\n",
737			    v.vol[0], v.vol[1]);
738		else
739		    printf ("%d %d\n", v.vol[0], v.vol[1]);
740	    else
741		printf ("No volume level info available\n");
742	}
743	return(0);
744}
745
746int info (char *arg)
747{
748	struct ioc_toc_header h;
749	int rc, i, n;
750
751	rc = ioctl (fd, CDIOREADTOCHEADER, &h);
752	if (rc >= 0) {
753		if (verbose)
754			printf ("Starting track = %d, ending track = %d, TOC size = %d bytes\n",
755				h.starting_track, h.ending_track, h.len);
756		else
757			printf ("%d %d %d\n", h.starting_track,
758				h.ending_track, h.len);
759	} else {
760		warn("getting toc header");
761		return (rc);
762	}
763
764	n = h.ending_track - h.starting_track + 1;
765	rc = read_toc_entrys ((n + 1) * sizeof (struct cd_toc_entry));
766	if (rc < 0)
767		return (rc);
768
769	if (verbose) {
770		printf ("track     start  duration   block  length   type\n");
771		printf ("-------------------------------------------------\n");
772	}
773
774	for (i = 0; i < n; i++) {
775		printf ("%5d  ", toc_buffer[i].track);
776		prtrack (toc_buffer + i, 0);
777	}
778	printf ("%5d  ", toc_buffer[n].track);
779	prtrack (toc_buffer + n, 1);
780	return (0);
781}
782
783void lba2msf (unsigned long lba, u_char *m, u_char *s, u_char *f)
784{
785	lba += 150;                     /* block start offset */
786	lba &= 0xffffff;                /* negative lbas use only 24 bits */
787	*m = lba / (60 * 75);
788	lba %= (60 * 75);
789	*s = lba / 75;
790	*f = lba % 75;
791}
792
793unsigned int msf2lba (u_char m, u_char s, u_char f)
794{
795	return (((m * 60) + s) * 75 + f) - 150;
796}
797
798void prtrack (struct cd_toc_entry *e, int lastflag)
799{
800	int block, next, len;
801	u_char m, s, f;
802
803	if (msf) {
804		/* Print track start */
805		printf ("%2d:%02d.%02d  ", e->addr.msf.minute,
806			e->addr.msf.second, e->addr.msf.frame);
807
808		block = msf2lba (e->addr.msf.minute, e->addr.msf.second,
809			e->addr.msf.frame);
810	} else {
811		block = ntohl(e->addr.lba);
812		lba2msf(block, &m, &s, &f);
813		/* Print track start */
814		printf ("%2d:%02d.%02d  ", m, s, f);
815	}
816	if (lastflag) {
817		/* Last track -- print block */
818		printf ("       -  %6d       -      -\n", block);
819		return;
820	}
821
822	if (msf)
823		next = msf2lba (e[1].addr.msf.minute, e[1].addr.msf.second,
824			e[1].addr.msf.frame);
825	else
826		next = ntohl(e[1].addr.lba);
827	len = next - block;
828	lba2msf (len, &m, &s, &f);
829
830	/* Print duration, block, length, type */
831	printf ("%2d:%02d.%02d  %6d  %6d  %5s\n", m, s, f, block, len,
832		(e->control & 4) ? "data" : "audio");
833}
834
835int play_track (int tstart, int istart, int tend, int iend)
836{
837	struct ioc_play_track t;
838
839	t.start_track = tstart;
840	t.start_index = istart;
841	t.end_track = tend;
842	t.end_index = iend;
843
844	return ioctl (fd, CDIOCPLAYTRACKS, &t);
845}
846
847int play_blocks (int blk, int len)
848{
849	struct ioc_play_blocks  t;
850
851	t.blk = blk;
852	t.len = len;
853
854	return ioctl (fd, CDIOCPLAYBLOCKS, &t);
855}
856
857int setvol (int left, int right)
858{
859	struct ioc_vol  v;
860
861	v.vol[0] = left;
862	v.vol[1] = right;
863	v.vol[2] = 0;
864	v.vol[3] = 0;
865
866	return ioctl (fd, CDIOCSETVOL, &v);
867}
868
869int read_toc_entrys (int len)
870{
871	struct ioc_read_toc_entry t;
872
873	t.address_format = msf ? CD_MSF_FORMAT : CD_LBA_FORMAT;
874	t.starting_track = 0;
875	t.data_len = len;
876	t.data = toc_buffer;
877
878	return (ioctl (fd, CDIOREADTOCENTRYS, (char *) &t));
879}
880
881int play_msf (int start_m, int start_s, int start_f,
882	int end_m, int end_s, int end_f)
883{
884	struct ioc_play_msf     a;
885
886	a.start_m = start_m;
887	a.start_s = start_s;
888	a.start_f = start_f;
889	a.end_m = end_m;
890	a.end_s = end_s;
891	a.end_f = end_f;
892
893	return ioctl (fd, CDIOCPLAYMSF, (char *) &a);
894}
895
896int status (int *trk, int *min, int *sec, int *frame)
897{
898	struct ioc_read_subchannel s;
899	struct cd_sub_channel_info data;
900	u_char mm, ss, ff;
901
902	bzero (&s, sizeof (s));
903	s.data = &data;
904	s.data_len = sizeof (data);
905	s.address_format = msf ? CD_MSF_FORMAT : CD_LBA_FORMAT;
906	s.data_format = CD_CURRENT_POSITION;
907
908	if (ioctl (fd, CDIOCREADSUBCHANNEL, (char *) &s) < 0)
909		return -1;
910
911	*trk = s.data->what.position.track_number;
912	if (msf) {
913		*min = s.data->what.position.reladdr.msf.minute;
914		*sec = s.data->what.position.reladdr.msf.second;
915		*frame = s.data->what.position.reladdr.msf.frame;
916	} else {
917		lba2msf(ntohl(s.data->what.position.reladdr.lba),
918			&mm, &ss, &ff);
919		*min = mm;
920		*sec = ss;
921		*frame = ff;
922	}
923
924	return s.data->header.audio_status;
925}
926
927const char *
928cdcontrol_prompt()
929{
930	return ("cdcontrol> ");
931}
932
933char *
934input (int *cmd)
935{
936#define MAXLINE 80
937	static EditLine *el = NULL;
938	static History *hist = NULL;
939	static char buf[MAXLINE];
940	int num = 0;
941	int len;
942	const char *bp = NULL;
943	char *p;
944
945	do {
946		if (verbose) {
947			if (!el) {
948				el = el_init("cdcontrol", stdin, stdout);
949				hist = history_init();
950				history(hist, H_EVENT, 100);
951				el_set(el, EL_HIST, history, hist);
952				el_set(el, EL_EDITOR, "emacs");
953				el_set(el, EL_PROMPT, cdcontrol_prompt);
954				el_set(el, EL_SIGNAL, 1);
955				el_source(el, NULL);
956			}
957			if ((bp = el_gets(el, &num)) == NULL || num == 0) {
958				*cmd = CMD_QUIT;
959				fprintf (stderr, "\r\n");
960				return (0);
961			}
962
963			len = (num > MAXLINE) ? MAXLINE : num;
964			memcpy(buf, bp, len);
965			buf[len] = 0;
966			history(hist, H_ENTER, bp);
967#undef MAXLINE
968
969		} else {
970			if (! fgets (buf, sizeof (buf), stdin)) {
971				*cmd = CMD_QUIT;
972				fprintf (stderr, "\r\n");
973				return (0);
974			}
975		}
976		p = parse (buf, cmd);
977	} while (! p);
978	return (p);
979}
980
981char *parse (char *buf, int *cmd)
982{
983	struct cmdtab *c;
984	char *p;
985	int len;
986
987	for (p=buf; isspace (*p); p++)
988		continue;
989
990	if (isdigit (*p) || (p[0] == '#' && isdigit (p[1]))) {
991		*cmd = CMD_PLAY;
992		return (p);
993	}
994
995	for (buf = p; *p && ! isspace (*p); p++)
996		continue;
997
998	len = p - buf;
999	if (! len)
1000		return (0);
1001
1002	if (*p) {                       /* It must be a spacing character! */
1003		char *q;
1004
1005		*p++ = 0;
1006		for (q=p; *q && *q != '\n' && *q != '\r'; q++)
1007			continue;
1008		*q = 0;
1009	}
1010
1011	*cmd = -1;
1012	for (c=cmdtab; c->name; ++c) {
1013		/* Is it an exact match? */
1014		if (! strcasecmp (buf, c->name)) {
1015  			*cmd = c->command;
1016  			break;
1017  		}
1018
1019		/* Try short hand forms then... */
1020		if (len >= c->min && ! strncasecmp (buf, c->name, len)) {
1021			if (*cmd != -1 && *cmd != c->command) {
1022				warnx("ambiguous command");
1023				return (0);
1024			}
1025			*cmd = c->command;
1026  		}
1027	}
1028
1029	if (*cmd == -1) {
1030		warnx("invalid command, enter ``help'' for commands");
1031		return (0);
1032	}
1033
1034	while (isspace (*p))
1035		p++;
1036	return p;
1037}
1038
1039int open_cd ()
1040{
1041	char devbuf[MAXPATHLEN];
1042
1043	if (fd > -1)
1044		return (1);
1045
1046	if (*cdname == '/') {
1047		snprintf (devbuf, MAXPATHLEN, "%s", cdname);
1048	} else {
1049		snprintf (devbuf, MAXPATHLEN, "/dev/%s", cdname);
1050	}
1051
1052	fd = open (devbuf, O_RDONLY);
1053
1054	if (fd < 0 && errno == ENOENT) {
1055		strcat (devbuf, DEFAULT_CD_PARTITION);
1056		fd = open (devbuf, O_RDONLY);
1057	}
1058
1059	if (fd < 0) {
1060		if (errno == ENXIO) {
1061			/*  ENXIO has an overloaded meaning here.
1062			 *  The original "Device not configured" should
1063			 *  be interpreted as "No disc in drive %s". */
1064			warnx("no disc in drive %s", devbuf);
1065			return (0);
1066		}
1067		err(1, "%s", devbuf);
1068	}
1069	return (1);
1070}
1071