cdcontrol.c revision 50071 
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	"$Id: cdcontrol.c,v 1.20 1999/08/19 04:10:31 mdodd Exp $";
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 <histedit.h>
37
38#define VERSION "2.0"
39
40#define ASTS_INVALID    0x00  /* Audio status byte not valid */
41#define ASTS_PLAYING    0x11  /* Audio play operation in progress */
42#define ASTS_PAUSED     0x12  /* Audio play operation paused */
43#define ASTS_COMPLETED  0x13  /* Audio play operation successfully completed */
44#define ASTS_ERROR      0x14  /* Audio play operation stopped due to error */
45#define ASTS_VOID       0x15  /* No current audio status to return */
46
47#ifndef DEFAULT_CD_DRIVE
48#  define DEFAULT_CD_DRIVE  "/dev/cd0c"
49#endif
50
51#ifndef DEFAULT_CD_PARTITION
52#  define DEFAULT_CD_PARTITION  "c"
53#endif
54
55#define CMD_DEBUG       1
56#define CMD_EJECT       2
57#define CMD_HELP        3
58#define CMD_INFO        4
59#define CMD_PAUSE       5
60#define CMD_PLAY        6
61#define CMD_QUIT        7
62#define CMD_RESUME      8
63#define CMD_STOP        9
64#define CMD_VOLUME      10
65#define CMD_CLOSE       11
66#define CMD_RESET       12
67#define CMD_SET         13
68#define CMD_STATUS      14
69#define STATUS_AUDIO    0x1
70#define STATUS_MEDIA    0x2
71#define STATUS_VOLUME   0x4
72
73struct cmdtab {
74	int command;
75	char *name;
76	unsigned  min;
77	char *args;
78} cmdtab[] = {
79{ CMD_CLOSE,    "close",        1, "" },
80{ CMD_DEBUG,    "debug",        1, "on | off" },
81{ CMD_EJECT,    "eject",        1, "" },
82{ CMD_HELP,     "?",            1, 0 },
83{ CMD_HELP,     "help",         1, "" },
84{ CMD_INFO,     "info",         1, "" },
85{ CMD_PAUSE,    "pause",        2, "" },
86{ CMD_PLAY,     "play",         1, "min1:sec1[.fram1] [min2:sec2[.fram2]]" },
87{ CMD_PLAY,     "play",         1, "track1[.index1] [track2[.index2]]" },
88{ CMD_PLAY,     "play",         1, "tr1 m1:s1[.f1] [[tr2] [m2:s2[.f2]]]" },
89{ CMD_PLAY,     "play",         1, "[#block [len]]" },
90{ CMD_QUIT,     "quit",         1, "" },
91{ CMD_RESET,    "reset",        4, "" },
92{ CMD_RESUME,   "resume",       1, "" },
93{ CMD_SET,      "set",          2, "msf | lba" },
94{ CMD_STATUS,   "status",       1, "[audio | media | volume]" },
95{ CMD_STOP,     "stop",         3, "" },
96{ CMD_VOLUME,   "volume",       1, "<l> <r> | left | right | mute | mono | stereo" },
97{ 0, }
98};
99
100struct cd_toc_entry     toc_buffer[100];
101
102const char      *cdname;
103int             fd = -1;
104int             verbose = 1;
105int             msf = 1;
106
107int             setvol __P((int, int));
108int             read_toc_entrys __P((int));
109int             play_msf __P((int, int, int, int, int, int));
110int             play_track __P((int, int, int, int));
111int             get_vol __P((int *, int *));
112int             status __P((int *, int *, int *, int *));
113int             open_cd __P((void));
114int             play __P((char *arg));
115int             info __P((char *arg));
116int             pstatus __P((char *arg));
117char            *input __P((int *));
118void            prtrack __P((struct cd_toc_entry *e, int lastflag));
119void            lba2msf __P((unsigned long lba,
120                            u_char *m, u_char *s, u_char *f));
121unsigned int    msf2lba __P((u_char m, u_char s, u_char f));
122int             play_blocks __P((int blk, int len));
123int             run __P((int cmd, char *arg));
124char            *parse __P((char *buf, int *cmd));
125
126void help ()
127{
128	struct cmdtab *c;
129	char *s, n;
130	int i;
131
132	for (c=cmdtab; c->name; ++c) {
133		if (! c->args)
134			continue;
135		printf("\t");
136		for (i = c->min, s = c->name; *s; s++, i--) {
137			if (i > 0)
138				n = toupper(*s);
139			else
140				n = *s;
141			putchar(n);
142		}
143		if (*c->args)
144			printf (" %s", c->args);
145		printf ("\n");
146	}
147	printf ("\n\tThe word \"play\" is not required for the play commands.\n");
148	printf ("\tThe plain target address is taken as a synonym for play.\n");
149}
150
151void usage ()
152{
153	fprintf (stderr, "usage: cdcontrol [-sv] [-f device] [command ...]\n");
154	exit (1);
155}
156
157int main (int argc, char **argv)
158{
159	int cmd;
160	char *arg;
161
162	cdname = getenv ("MUSIC_CD");
163	if (! cdname)
164		cdname = getenv ("CD_DRIVE");
165	if (! cdname)
166		cdname = getenv ("DISC");
167	if (! cdname)
168		cdname = getenv ("CDPLAY");
169
170	for (;;) {
171		switch (getopt (argc, argv, "svhf:")) {
172		case EOF:
173			break;
174		case 's':
175			verbose = 0;
176			continue;
177		case 'v':
178			verbose = 2;
179			continue;
180		case 'f':
181			cdname = optarg;
182			continue;
183		case 'h':
184		default:
185			usage ();
186		}
187		break;
188	}
189	argc -= optind;
190	argv += optind;
191
192	if (argc > 0 && ! strcasecmp (*argv, "help"))
193		usage ();
194
195	if (! cdname) {
196		cdname = DEFAULT_CD_DRIVE;
197		warnx("no CD device name specified, defaulting to %s", cdname);
198	}
199
200	if (argc > 0) {
201		char buf[80], *p;
202		int len;
203
204		for (p=buf; argc-->0; ++argv) {
205			len = strlen (*argv);
206
207			if (p + len >= buf + sizeof (buf) - 1)
208				usage ();
209
210			if (p > buf)
211				*p++ = ' ';
212
213			strcpy (p, *argv);
214			p += len;
215		}
216		*p = 0;
217		arg = parse (buf, &cmd);
218		return (run (cmd, arg));
219	}
220
221	if (verbose == 1)
222		verbose = isatty (0);
223
224	if (verbose) {
225		printf ("Compact Disc Control utility, version %s\n", VERSION);
226		printf ("Type `?' for command list\n\n");
227	}
228
229	for (;;) {
230		arg = input (&cmd);
231		if (run (cmd, arg) < 0) {
232			if (verbose)
233				warn(NULL);
234			close (fd);
235			fd = -1;
236		}
237		fflush (stdout);
238	}
239}
240
241int run (int cmd, char *arg)
242{
243	int l, r, rc;
244
245	switch (cmd) {
246
247	case CMD_QUIT:
248		exit (0);
249
250	case CMD_INFO:
251		if (fd < 0 && ! open_cd ())
252			return (0);
253
254		return info (arg);
255
256	case CMD_STATUS:
257		if (fd < 0 && ! open_cd ())
258			return (0);
259
260		return pstatus (arg);
261
262	case CMD_PAUSE:
263		if (fd < 0 && ! open_cd ())
264			return (0);
265
266		return ioctl (fd, CDIOCPAUSE);
267
268	case CMD_RESUME:
269		if (fd < 0 && ! open_cd ())
270			return (0);
271
272		return ioctl (fd, CDIOCRESUME);
273
274	case CMD_STOP:
275		if (fd < 0 && ! open_cd ())
276			return (0);
277
278		rc = ioctl (fd, CDIOCSTOP);
279
280		(void) ioctl (fd, CDIOCALLOW);
281
282		return (rc);
283
284	case CMD_RESET:
285		if (fd < 0 && ! open_cd ())
286			return (0);
287
288		rc = ioctl (fd, CDIOCRESET);
289		if (rc < 0)
290			return rc;
291		close(fd);
292		fd = -1;
293		return (0);
294
295	case CMD_DEBUG:
296		if (fd < 0 && ! open_cd ())
297			return (0);
298
299		if (! strcasecmp (arg, "on"))
300			return ioctl (fd, CDIOCSETDEBUG);
301
302		if (! strcasecmp (arg, "off"))
303			return ioctl (fd, CDIOCCLRDEBUG);
304
305		warnx("invalid command arguments");
306
307		return (0);
308
309	case CMD_EJECT:
310		if (fd < 0 && ! open_cd ())
311			return (0);
312
313		(void) ioctl (fd, CDIOCALLOW);
314		rc = ioctl (fd, CDIOCEJECT);
315		if (rc < 0)
316			return (rc);
317		return (0);
318
319	case CMD_CLOSE:
320		if (fd < 0 && ! open_cd ())
321			return (0);
322
323		(void) ioctl (fd, CDIOCALLOW);
324		rc = ioctl (fd, CDIOCCLOSE);
325		if (rc < 0)
326			return (rc);
327		close(fd);
328		fd = -1;
329		return (0);
330
331	case CMD_PLAY:
332		if (fd < 0 && ! open_cd ())
333			return (0);
334
335		while (isspace (*arg))
336			arg++;
337
338		return play (arg);
339
340	case CMD_SET:
341		if (! strcasecmp (arg, "msf"))
342			msf = 1;
343		else if (! strcasecmp (arg, "lba"))
344			msf = 0;
345		else
346			warnx("invalid command arguments");
347		return (0);
348
349	case CMD_VOLUME:
350		if (fd < 0 && !open_cd ())
351			return (0);
352
353		if (! strncasecmp (arg, "left", strlen(arg)))
354			return ioctl (fd, CDIOCSETLEFT);
355
356		if (! strncasecmp (arg, "right", strlen(arg)))
357			return ioctl (fd, CDIOCSETRIGHT);
358
359		if (! strncasecmp (arg, "mono", strlen(arg)))
360			return ioctl (fd, CDIOCSETMONO);
361
362		if (! strncasecmp (arg, "stereo", strlen(arg)))
363			return ioctl (fd, CDIOCSETSTERIO);
364
365		if (! strncasecmp (arg, "mute", strlen(arg)))
366			return ioctl (fd, CDIOCSETMUTE);
367
368		if (2 != sscanf (arg, "%d %d", &l, &r)) {
369			warnx("invalid command arguments");
370			return (0);
371		}
372
373		return setvol (l, r);
374
375	default:
376	case CMD_HELP:
377		help ();
378		return (0);
379
380	}
381}
382
383int play (char *arg)
384{
385	struct ioc_toc_header h;
386	int rc, n, start, end = 0, istart = 1, iend = 1;
387
388	rc = ioctl (fd, CDIOREADTOCHEADER, &h);
389
390	if (rc < 0)
391		return (rc);
392
393	n = h.ending_track - h.starting_track + 1;
394	rc = read_toc_entrys ((n + 1) * sizeof (struct cd_toc_entry));
395
396	if (rc < 0)
397		return (rc);
398
399	if (! arg || ! *arg) {
400		/* Play the whole disc */
401		if (msf)
402			return play_blocks (0, msf2lba (toc_buffer[n].addr.msf.minute,
403							toc_buffer[n].addr.msf.second,
404							toc_buffer[n].addr.msf.frame));
405		else
406			return play_blocks (0, ntohl(toc_buffer[n].addr.lba));
407	}
408
409	if (strchr (arg, '#')) {
410		/* Play block #blk [ len ] */
411		int blk, len = 0;
412
413		if (2 != sscanf (arg, "#%d%d", &blk, &len) &&
414		    1 != sscanf (arg, "#%d", &blk))
415			goto Clean_up;
416
417		if (len == 0) {
418			if (msf)
419				len = msf2lba (toc_buffer[n].addr.msf.minute,
420					       toc_buffer[n].addr.msf.second,
421					       toc_buffer[n].addr.msf.frame) - blk;
422			else
423				len = ntohl(toc_buffer[n].addr.lba) - blk;
424		}
425		return play_blocks (blk, len);
426	}
427
428	if (strchr (arg, ':')) {
429		/*
430		 * Play MSF m1:s1 [ .f1 ] [ m2:s2 [ .f2 ] ]
431		 *
432		 * Will now also undestand timed addresses relative
433		 * to the beginning of a track in the form...
434		 *
435		 *      tr1 m1:s1[.f1] [[tr2] [m2:s2[.f2]]]
436		 */
437		unsigned tr1, tr2;
438		unsigned m1, m2, s1, s2, f1, f2;
439		unsigned char tm, ts, tf;
440
441		tr2 = m2 = s2 = f2 = f1 = 0;
442		if (8 == sscanf (arg, "%d %d:%d.%d %d %d:%d.%d",
443		    &tr1, &m1, &s1, &f1, &tr2, &m2, &s2, &f2))
444			goto Play_Relative_Addresses;
445
446		tr2 = m2 = s2 = f2 = f1 = 0;
447		if (7 == sscanf (arg, "%d %d:%d %d %d:%d.%d",
448		    &tr1, &m1, &s1, &tr2, &m2, &s2, &f2))
449			goto Play_Relative_Addresses;
450
451		tr2 = m2 = s2 = f2 = f1 = 0;
452		if (7 == sscanf (arg, "%d %d:%d.%d %d %d:%d",
453		    &tr1, &m1, &s1, &f1, &tr2, &m2, &s2))
454			goto Play_Relative_Addresses;
455
456		tr2 = m2 = s2 = f2 = f1 = 0;
457		if (7 == sscanf (arg, "%d %d:%d.%d %d:%d.%d",
458		    &tr1, &m1, &s1, &f1, &m2, &s2, &f2))
459			goto Play_Relative_Addresses;
460
461		tr2 = m2 = s2 = f2 = f1 = 0;
462		if (6 == sscanf (arg, "%d %d:%d.%d %d:%d",
463		    &tr1, &m1, &s1, &f1, &m2, &s2))
464			goto Play_Relative_Addresses;
465
466		tr2 = m2 = s2 = f2 = f1 = 0;
467		if (6 == sscanf (arg, "%d %d:%d %d:%d.%d",
468		    &tr1, &m1, &s1, &m2, &s2, &f2))
469			goto Play_Relative_Addresses;
470
471		tr2 = m2 = s2 = f2 = f1 = 0;
472		if (6 == sscanf (arg, "%d %d:%d.%d %d %d",
473		    &tr1, &m1, &s1, &f1, &tr2, &m2))
474			goto Play_Relative_Addresses;
475
476		tr2 = m2 = s2 = f2 = f1 = 0;
477		if (5 == sscanf (arg, "%d %d:%d %d:%d", &tr1, &m1, &s1, &m2, &s2))
478			goto Play_Relative_Addresses;
479
480		tr2 = m2 = s2 = f2 = f1 = 0;
481		if (5 == sscanf (arg, "%d %d:%d %d %d",
482		    &tr1, &m1, &s1, &tr2, &m2))
483			goto Play_Relative_Addresses;
484
485		tr2 = m2 = s2 = f2 = f1 = 0;
486		if (5 == sscanf (arg, "%d %d:%d.%d %d",
487		    &tr1, &m1, &s1, &f1, &tr2))
488			goto Play_Relative_Addresses;
489
490		tr2 = m2 = s2 = f2 = f1 = 0;
491		if (4 == sscanf (arg, "%d %d:%d %d", &tr1, &m1, &s1, &tr2))
492			goto Play_Relative_Addresses;
493
494		tr2 = m2 = s2 = f2 = f1 = 0;
495		if (4 == sscanf (arg, "%d %d:%d.%d", &tr1, &m1, &s1, &f1))
496			goto Play_Relative_Addresses;
497
498		tr2 = m2 = s2 = f2 = f1 = 0;
499		if (3 == sscanf (arg, "%d %d:%d", &tr1, &m1, &s1))
500			goto Play_Relative_Addresses;
501
502		tr2 = m2 = s2 = f2 = f1 = 0;
503		goto Try_Absolute_Timed_Addresses;
504
505Play_Relative_Addresses:
506		if (! tr1)
507			tr1 = 1;
508		else if (tr1 > n)
509			tr1 = n;
510
511		if (msf) {
512			tm = toc_buffer[tr1].addr.msf.minute;
513			ts = toc_buffer[tr1].addr.msf.second;
514			tf = toc_buffer[tr1].addr.msf.frame;
515		} else
516			lba2msf(ntohl(toc_buffer[tr1].addr.lba),
517				&tm, &ts, &tf);
518		if ((m1 > tm)
519		    || ((m1 == tm)
520		    && ((s1 > ts)
521		    || ((s1 == ts)
522		    && (f1 > tf))))) {
523			printf ("Track %d is not that long.\n", tr1);
524			return (0);
525		}
526
527		tr1--;
528
529		f1 += tf;
530		if (f1 >= 75) {
531			s1 += f1 / 75;
532			f1 %= 75;
533		}
534
535		s1 += ts;
536		if (s1 >= 60) {
537			m1 += s1 / 60;
538			s1 %= 60;
539		}
540
541		m1 += tm;
542
543		if (! tr2) {
544			if (m2 || s2 || f2) {
545				tr2 = tr1;
546				f2 += f1;
547				if (f2 >= 75) {
548					s2 += f2 / 75;
549					f2 %= 75;
550				}
551
552				s2 += s1;
553				if (s2 > 60) {
554					m2 += s2 / 60;
555					s2 %= 60;
556				}
557
558				m2 += m1;
559			} else {
560				tr2 = n;
561				if (msf) {
562					m2 = toc_buffer[n].addr.msf.minute;
563					s2 = toc_buffer[n].addr.msf.second;
564					f2 = toc_buffer[n].addr.msf.frame;
565				} else {
566					lba2msf(ntohl(toc_buffer[n].addr.lba),
567						&tm, &ts, &tf);
568					m2 = tm;
569					s2 = ts;
570					f2 = tf;
571				}
572			}
573		} else if (tr2 > n) {
574			tr2 = n;
575			m2 = s2 = f2 = 0;
576		} else {
577			if (m2 || s2 || f2)
578				tr2--;
579			if (msf) {
580				tm = toc_buffer[tr2].addr.msf.minute;
581				ts = toc_buffer[tr2].addr.msf.second;
582				tf = toc_buffer[tr2].addr.msf.frame;
583			} else
584				lba2msf(ntohl(toc_buffer[tr2].addr.lba),
585					&tm, &ts, &tf);
586			f2 += tf;
587			if (f2 >= 75) {
588				s2 += f2 / 75;
589				f2 %= 75;
590			}
591
592			s2 += ts;
593			if (s2 > 60) {
594				m2 += s2 / 60;
595				s2 %= 60;
596			}
597
598			m2 += tm;
599		}
600
601		if (msf) {
602			tm = toc_buffer[n].addr.msf.minute;
603			ts = toc_buffer[n].addr.msf.second;
604			tf = toc_buffer[n].addr.msf.frame;
605		} else
606			lba2msf(ntohl(toc_buffer[n].addr.lba),
607				&tm, &ts, &tf);
608		if ((tr2 < n)
609		    && ((m2 > tm)
610		    || ((m2 == tm)
611		    && ((s2 > ts)
612		    || ((s2 == ts)
613		    && (f2 > tf)))))) {
614			printf ("The playing time of the disc is not that long.\n");
615			return (0);
616		}
617		return (play_msf (m1, s1, f1, m2, s2, f2));
618
619Try_Absolute_Timed_Addresses:
620		if (6 != sscanf (arg, "%d:%d.%d%d:%d.%d",
621			&m1, &s1, &f1, &m2, &s2, &f2) &&
622		    5 != sscanf (arg, "%d:%d.%d%d:%d", &m1, &s1, &f1, &m2, &s2) &&
623		    5 != sscanf (arg, "%d:%d%d:%d.%d", &m1, &s1, &m2, &s2, &f2) &&
624		    3 != sscanf (arg, "%d:%d.%d", &m1, &s1, &f1) &&
625		    4 != sscanf (arg, "%d:%d%d:%d", &m1, &s1, &m2, &s2) &&
626		    2 != sscanf (arg, "%d:%d", &m1, &s1))
627			goto Clean_up;
628
629		if (m2 == 0) {
630			if (msf) {
631				m2 = toc_buffer[n].addr.msf.minute;
632				s2 = toc_buffer[n].addr.msf.second;
633				f2 = toc_buffer[n].addr.msf.frame;
634			} else {
635				lba2msf(ntohl(toc_buffer[n].addr.lba),
636					&tm, &ts, &tf);
637				m2 = tm;
638				s2 = ts;
639				f2 = tf;
640			}
641		}
642		return play_msf (m1, s1, f1, m2, s2, f2);
643	}
644
645	/*
646	 * Play track trk1 [ .idx1 ] [ trk2 [ .idx2 ] ]
647	 */
648	if (4 != sscanf (arg, "%d.%d%d.%d", &start, &istart, &end, &iend) &&
649	    3 != sscanf (arg, "%d.%d%d", &start, &istart, &end) &&
650	    3 != sscanf (arg, "%d%d.%d", &start, &end, &iend) &&
651	    2 != sscanf (arg, "%d.%d", &start, &istart) &&
652	    2 != sscanf (arg, "%d%d", &start, &end) &&
653	    1 != sscanf (arg, "%d", &start))
654		goto Clean_up;
655
656	if (end == 0)
657		end = n;
658	return (play_track (start, istart, end, iend));
659
660Clean_up:
661	warnx("invalid command arguments");
662	return (0);
663}
664
665char *strstatus (int sts)
666{
667	switch (sts) {
668	case ASTS_INVALID:   return ("invalid");
669	case ASTS_PLAYING:   return ("playing");
670	case ASTS_PAUSED:    return ("paused");
671	case ASTS_COMPLETED: return ("completed");
672	case ASTS_ERROR:     return ("error");
673	case ASTS_VOID:      return ("void");
674	default:             return ("??");
675	}
676}
677
678int pstatus (char *arg)
679{
680	struct ioc_vol v;
681	struct ioc_read_subchannel ss;
682	struct cd_sub_channel_info data;
683	int rc, trk, m, s, f;
684	int what = 0;
685	char *p;
686
687	while ((p = strtok(arg, " \t"))) {
688	    arg = 0;
689	    if (!strncasecmp(p, "audio", strlen(p)))
690		what |= STATUS_AUDIO;
691	    else if (!strncasecmp(p, "media", strlen(p)))
692		what |= STATUS_MEDIA;
693	    else if (!strncasecmp(p, "volume", strlen(p)))
694		what |= STATUS_VOLUME;
695	    else {
696		warnx("invalid command arguments");
697		return 0;
698	    }
699	}
700	if (!what)
701	    what = STATUS_AUDIO|STATUS_MEDIA|STATUS_VOLUME;
702	if (what & STATUS_AUDIO) {
703	    rc = status (&trk, &m, &s, &f);
704	    if (rc >= 0)
705		if (verbose)
706		    printf ("Audio status = %d<%s>, current track = %d, current position = %d:%02d.%02d\n",
707			    rc, strstatus (rc), trk, m, s, f);
708		else
709		    printf ("%d %d %d:%02d.%02d\n", rc, trk, m, s, f);
710	    else
711		printf ("No current status info available\n");
712	}
713	if (what & STATUS_MEDIA) {
714	    bzero (&ss, sizeof (ss));
715	    ss.data = &data;
716	    ss.data_len = sizeof (data);
717	    ss.address_format = msf ? CD_MSF_FORMAT : CD_LBA_FORMAT;
718	    ss.data_format = CD_MEDIA_CATALOG;
719	    rc = ioctl (fd, CDIOCREADSUBCHANNEL, (char *) &ss);
720	    if (rc >= 0) {
721		printf("Media catalog is %sactive",
722		       ss.data->what.media_catalog.mc_valid ? "": "in");
723		if (ss.data->what.media_catalog.mc_valid &&
724		    ss.data->what.media_catalog.mc_number[0])
725		    printf(", number \"%.15s\"",
726			   ss.data->what.media_catalog.mc_number);
727		putchar('\n');
728	    } else
729		printf("No media catalog info available\n");
730	}
731	if (what & STATUS_VOLUME) {
732	    rc = ioctl (fd, CDIOCGETVOL, &v);
733	    if (rc >= 0)
734		if (verbose)
735		    printf ("Left volume = %d, right volume = %d\n",
736			    v.vol[0], v.vol[1]);
737		else
738		    printf ("%d %d\n", v.vol[0], v.vol[1]);
739	    else
740		printf ("No volume level info available\n");
741	}
742	return(0);
743}
744
745int info (char *arg)
746{
747	struct ioc_toc_header h;
748	int rc, i, n;
749
750	rc = ioctl (fd, CDIOREADTOCHEADER, &h);
751	if (rc >= 0) {
752		if (verbose)
753			printf ("Starting track = %d, ending track = %d, TOC size = %d bytes\n",
754				h.starting_track, h.ending_track, h.len);
755		else
756			printf ("%d %d %d\n", h.starting_track,
757				h.ending_track, h.len);
758	} else {
759		warn("getting toc header");
760		return (rc);
761	}
762
763	n = h.ending_track - h.starting_track + 1;
764	rc = read_toc_entrys ((n + 1) * sizeof (struct cd_toc_entry));
765	if (rc < 0)
766		return (rc);
767
768	if (verbose) {
769		printf ("track     start  duration   block  length   type\n");
770		printf ("-------------------------------------------------\n");
771	}
772
773	for (i = 0; i < n; i++) {
774		printf ("%5d  ", toc_buffer[i].track);
775		prtrack (toc_buffer + i, 0);
776	}
777	printf ("%5d  ", toc_buffer[n].track);
778	prtrack (toc_buffer + n, 1);
779	return (0);
780}
781
782void lba2msf (unsigned long lba, u_char *m, u_char *s, u_char *f)
783{
784	lba += 150;                     /* block start offset */
785	lba &= 0xffffff;                /* negative lbas use only 24 bits */
786	*m = lba / (60 * 75);
787	lba %= (60 * 75);
788	*s = lba / 75;
789	*f = lba % 75;
790}
791
792unsigned int msf2lba (u_char m, u_char s, u_char f)
793{
794	return (((m * 60) + s) * 75 + f) - 150;
795}
796
797void prtrack (struct cd_toc_entry *e, int lastflag)
798{
799	int block, next, len;
800	u_char m, s, f;
801
802	if (msf) {
803		/* Print track start */
804		printf ("%2d:%02d.%02d  ", e->addr.msf.minute,
805			e->addr.msf.second, e->addr.msf.frame);
806
807		block = msf2lba (e->addr.msf.minute, e->addr.msf.second,
808			e->addr.msf.frame);
809	} else {
810		block = ntohl(e->addr.lba);
811		lba2msf(block, &m, &s, &f);
812		/* Print track start */
813		printf ("%2d:%02d.%02d  ", m, s, f);
814	}
815	if (lastflag) {
816		/* Last track -- print block */
817		printf ("       -  %6d       -      -\n", block);
818		return;
819	}
820
821	if (msf)
822		next = msf2lba (e[1].addr.msf.minute, e[1].addr.msf.second,
823			e[1].addr.msf.frame);
824	else
825		next = ntohl(e[1].addr.lba);
826	len = next - block;
827	lba2msf (len, &m, &s, &f);
828
829	/* Print duration, block, length, type */
830	printf ("%2d:%02d.%02d  %6d  %6d  %5s\n", m, s, f, block, len,
831		(e->control & 4) ? "data" : "audio");
832}
833
834int play_track (int tstart, int istart, int tend, int iend)
835{
836	struct ioc_play_track t;
837
838	t.start_track = tstart;
839	t.start_index = istart;
840	t.end_track = tend;
841	t.end_index = iend;
842
843	return ioctl (fd, CDIOCPLAYTRACKS, &t);
844}
845
846int play_blocks (int blk, int len)
847{
848	struct ioc_play_blocks  t;
849
850	t.blk = blk;
851	t.len = len;
852
853	return ioctl (fd, CDIOCPLAYBLOCKS, &t);
854}
855
856int setvol (int left, int right)
857{
858	struct ioc_vol  v;
859
860	v.vol[0] = left;
861	v.vol[1] = right;
862	v.vol[2] = 0;
863	v.vol[3] = 0;
864
865	return ioctl (fd, CDIOCSETVOL, &v);
866}
867
868int read_toc_entrys (int len)
869{
870	struct ioc_read_toc_entry t;
871
872	t.address_format = msf ? CD_MSF_FORMAT : CD_LBA_FORMAT;
873	t.starting_track = 0;
874	t.data_len = len;
875	t.data = toc_buffer;
876
877	return (ioctl (fd, CDIOREADTOCENTRYS, (char *) &t));
878}
879
880int play_msf (int start_m, int start_s, int start_f,
881	int end_m, int end_s, int end_f)
882{
883	struct ioc_play_msf     a;
884
885	a.start_m = start_m;
886	a.start_s = start_s;
887	a.start_f = start_f;
888	a.end_m = end_m;
889	a.end_s = end_s;
890	a.end_f = end_f;
891
892	return ioctl (fd, CDIOCPLAYMSF, (char *) &a);
893}
894
895int status (int *trk, int *min, int *sec, int *frame)
896{
897	struct ioc_read_subchannel s;
898	struct cd_sub_channel_info data;
899	u_char mm, ss, ff;
900
901	bzero (&s, sizeof (s));
902	s.data = &data;
903	s.data_len = sizeof (data);
904	s.address_format = msf ? CD_MSF_FORMAT : CD_LBA_FORMAT;
905	s.data_format = CD_CURRENT_POSITION;
906
907	if (ioctl (fd, CDIOCREADSUBCHANNEL, (char *) &s) < 0)
908		return -1;
909
910	*trk = s.data->what.position.track_number;
911	if (msf) {
912		*min = s.data->what.position.reladdr.msf.minute;
913		*sec = s.data->what.position.reladdr.msf.second;
914		*frame = s.data->what.position.reladdr.msf.frame;
915	} else {
916		lba2msf(ntohl(s.data->what.position.reladdr.lba),
917			&mm, &ss, &ff);
918		*min = mm;
919		*sec = ss;
920		*frame = ff;
921	}
922
923	return s.data->header.audio_status;
924}
925
926const char *
927cdcontrol_prompt()
928{
929	return ("cdcontrol> ");
930}
931
932char *
933input (int *cmd)
934{
935#define MAXLINE 80
936	static EditLine *el = NULL;
937	static History *hist = NULL;
938	static char buf[MAXLINE];
939	int num = 0;
940	int len;
941	const char *bp = NULL;
942	char *p;
943
944	do {
945		if (verbose) {
946			if (!el) {
947				el = el_init("cdcontrol", stdin, stdout);
948				hist = history_init();
949				history(hist, H_EVENT, 100);
950				el_set(el, EL_HIST, history, hist);
951				el_set(el, EL_EDITOR, "emacs");
952				el_set(el, EL_PROMPT, cdcontrol_prompt);
953				el_set(el, EL_SIGNAL, 1);
954				el_source(el, NULL);
955			}
956			if ((bp = el_gets(el, &num)) == NULL || num == 0)
957				return (0);
958
959			len = (num > MAXLINE) ? MAXLINE : num;
960			memcpy(buf, bp, len);
961			buf[len] = 0;
962			history(hist, H_ENTER, bp);
963#undef MAXLINE
964
965		} else {
966			if (! fgets (buf, sizeof (buf), stdin)) {
967				*cmd = CMD_QUIT;
968				fprintf (stderr, "\r\n");
969				return (0);
970			}
971		}
972		p = parse (buf, cmd);
973	} while (! p);
974	return (p);
975}
976
977char *parse (char *buf, int *cmd)
978{
979	struct cmdtab *c;
980	char *p;
981	int len;
982
983	for (p=buf; isspace (*p); p++)
984		continue;
985
986	if (isdigit (*p) || (p[0] == '#' && isdigit (p[1]))) {
987		*cmd = CMD_PLAY;
988		return (p);
989	}
990
991	for (buf = p; *p && ! isspace (*p); p++)
992		continue;
993
994	len = p - buf;
995	if (! len)
996		return (0);
997
998	if (*p) {                       /* It must be a spacing character! */
999		char *q;
1000
1001		*p++ = 0;
1002		for (q=p; *q && *q != '\n' && *q != '\r'; q++)
1003			continue;
1004		*q = 0;
1005	}
1006
1007	*cmd = -1;
1008	for (c=cmdtab; c->name; ++c) {
1009		/* Is it an exact match? */
1010		if (! strcasecmp (buf, c->name)) {
1011  			*cmd = c->command;
1012  			break;
1013  		}
1014
1015		/* Try short hand forms then... */
1016		if (len >= c->min && ! strncasecmp (buf, c->name, len)) {
1017			if (*cmd != -1 && *cmd != c->command) {
1018				warnx("ambiguous command");
1019				return (0);
1020			}
1021			*cmd = c->command;
1022  		}
1023	}
1024
1025	if (*cmd == -1) {
1026		warnx("invalid command, enter ``help'' for commands");
1027		return (0);
1028	}
1029
1030	while (isspace (*p))
1031		p++;
1032	return p;
1033}
1034
1035int open_cd ()
1036{
1037	char devbuf[80];
1038
1039	if (fd > -1)
1040		return (1);
1041
1042	if (*cdname == '/')
1043		strcpy (devbuf, cdname);
1044	else if (*cdname == 'r')
1045		sprintf (devbuf, "/dev/%s", cdname);
1046	else
1047		sprintf (devbuf, "/dev/r%s", cdname);
1048
1049	fd = open (devbuf, O_RDONLY);
1050
1051	if (fd < 0 && errno == ENOENT) {
1052		strcat (devbuf, DEFAULT_CD_PARTITION);
1053		fd = open (devbuf, O_RDONLY);
1054	}
1055
1056	if (fd < 0) {
1057		if (errno == ENXIO) {
1058			/*  ENXIO has an overloaded meaning here.
1059			 *  The original "Device not configured" should
1060			 *  be interpreted as "No disc in drive %s". */
1061			warnx("no disc in drive %s", devbuf);
1062			return (0);
1063		}
1064		err(1, "%s", devbuf);
1065	}
1066	return (1);
1067}
1068