/*	$OpenBSD: cdio.c,v 1.27 2003/02/13 05:48:38 fgsch Exp $	*/
/*
 * Compact Disc Control Utility by Serge V. Vakulenko <vak@cronyx.ru>.
 * Based on the non-X based CD player by Jean-Marc Zucconi and
 * Andrey A. Chernov.
 *
 * Fixed and further modified on 5-Sep-1995 by Jukka Ukkonen <jau@funet.fi>.
 *
 * 11-Sep-1995: Jukka A. Ukkonen <jau@funet.fi>
 *              A couple of further fixes to my own earlier "fixes".
 *
 * 18-Sep-1995: Jukka A. Ukkonen <jau@funet.fi>
 *              Added an ability to specify addresses relative to the
 *              beginning of a track. This is in fact a variation of
 *              doing the simple play_msf() call.
 *
 * 11-Oct-1995: Serge V.Vakulenko <vak@cronyx.ru>
 *              New eject algorithm.
 *              Some code style reformatting.
 *
 * $FreeBSD: cdcontrol.c,v 1.13 1996/06/25 21:01:27 ache Exp $
 */

#include <sys/param.h>
#include <sys/file.h>
#include <sys/cdio.h>
#include <sys/ioctl.h>

#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <histedit.h>
#include <util.h>
#include <vis.h>

#include "extern.h"

#define ASTS_INVALID    0x00  /* Audio status byte not valid */
#define ASTS_PLAYING    0x11  /* Audio play operation in progress */
#define ASTS_PAUSED     0x12  /* Audio play operation paused */
#define ASTS_COMPLETED  0x13  /* Audio play operation successfully completed */
#define ASTS_ERROR      0x14  /* Audio play operation stopped due to error */
#define ASTS_VOID       0x15  /* No current audio status to return */

#ifndef DEFAULT_CD_DRIVE
#  define DEFAULT_CD_DRIVE  "cd0"
#endif

#define CMD_DEBUG       1
#define CMD_DEVICE      2
#define CMD_EJECT       3
#define CMD_HELP        4
#define CMD_INFO        5
#define CMD_PAUSE       6
#define CMD_PLAY        7
#define CMD_QUIT        8
#define CMD_RESUME      9
#define CMD_STOP        10
#define CMD_VOLUME      11
#define CMD_CLOSE       12
#define CMD_RESET       13
#define CMD_SET         14
#define CMD_STATUS      15
#define CMD_NEXT	16
#define CMD_PREV	17
#define CMD_REPLAY	18
#define CMD_CDDB	19
#define CMD_CDID	20

struct cmdtab {
	int command;
	char *name;
	unsigned int min;
	char *args;
} cmdtab[] = {
{ CMD_CLOSE,    "close",        1, "" },
{ CMD_DEBUG,    "debug",        1, "on | off" },
{ CMD_DEVICE,   "device",       1, "devname" },
{ CMD_EJECT,    "eject",        1, "" },
{ CMD_HELP,     "?",            1, 0 },
{ CMD_HELP,     "help",         1, "" },
{ CMD_INFO,     "info",         1, "" },
{ CMD_NEXT,	"next",		1, "" },
{ CMD_PAUSE,    "pause",        2, "" },
{ CMD_PLAY,     "play",         1, "min1:sec1[.fram1] [min2:sec2[.fram2]]" },
{ CMD_PLAY,     "play",         1, "track1[.index1] [track2[.index2]]" },
{ CMD_PLAY,     "play",         1, "tr1 m1:s1[.f1] [[tr2] [m2:s2[.f2]]]" },
{ CMD_PLAY,     "play",         1, "[#block [len]]" },
{ CMD_PREV,	"previous",	2, "" },
{ CMD_QUIT,     "quit",         1, "" },
{ CMD_RESET,    "reset",        4, "" },
{ CMD_RESUME,   "resume",       1, "" },
{ CMD_REPLAY,	"replay",	3, "" },
{ CMD_SET,      "set",          2, "msf | lba" },
{ CMD_STATUS,   "status",       1, "" },
{ CMD_STOP,     "stop",         3, "" },
{ CMD_VOLUME,   "volume",       1, "<l> <r> | left | right | mute | mono | stereo" },
{ CMD_CDDB,   	"cddbinfo",     2, "[n]" },
{ CMD_CDID,	"cdid",		3, "" },
{ 0, 0, 0, 0}
};

struct cd_toc_entry     *toc_buffer;

char		*cdname;
int             fd = -1;
int             verbose = 1;
int             msf = 1;
const char 	*cddb_host;
char		**track_names;

EditLine       *el = NULL;	/* line-editing structure */
History	       *hist = NULL;	/* line-editing history */
void		switch_el(void);

extern char     *__progname;

int             setvol(int, int);
int             read_toc_entrys(int);
int             play_msf(int, int, int, int, int, int);
int             play_track(int, int, int, int);
int             get_vol(int *, int *);
int             status(int *, int *, int *, int *);
int             open_cd(char *);
int             play(char *arg);
int             info(char *arg);
int             cddbinfo(char *arg);
int             pstatus(char *arg);
int		play_next(char *arg);
int		play_prev(char *arg);
int		play_same(char *arg);
char            *input(int *);
char		*prompt(void);
void            prtrack(struct cd_toc_entry *e, int lastflag, char *name);
void            lba2msf(unsigned long lba, u_char *m, u_char *s, u_char *f);
unsigned int    msf2lba(u_char m, u_char s, u_char f);
int             play_blocks(int blk, int len);
int             run(int cmd, char *arg);
char            *parse(char *buf, int *cmd);
void 		help(void);
void		usage(void);
char 		*strstatus(int);
int		cdid(void);

void
help()
{
	struct cmdtab *c;
	char *s, n;
	int i;

	for (c=cmdtab; c->name; ++c) {
		if (! c->args)
			continue;
		printf("\t");
		for (i = c->min, s = c->name; *s; s++, i--) {
			if (i > 0)
				n = toupper(*s);
			else
				n = *s;
			putchar(n);
		}
		if (*c->args)
			printf(" %s", c->args);
		printf("\n");
	}
	printf("\n\tThe word \"play\" is not required for the play commands.\n");
	printf("\tThe plain target address is taken as a synonym for play.\n");
}

void
usage()
{
	fprintf(stderr, "usage: %s [-sv] [-f device] [command args ...]\n",
	    __progname);
	exit(1);
}

int
main(int argc, char **argv)
{
	int cmd;
	char *arg;

	cdname = getenv("DISC");
	if (! cdname)
		cdname = getenv("CDROM");

	cddb_host = getenv("CDDB");
	if (!cddb_host)
		cddb_host = "freedb.freedb.org";

	for (;;) {
		switch (getopt(argc, argv, "svd:f:")) {
		case -1:
			break;
		case 's':
			verbose = 0;
			continue;
		case 'v':
			verbose = 2;
			continue;
		case 'f':
			cdname = optarg;
			continue;
	    	case 'd':
			cddb_host = optarg;
			continue;
		default:
			usage();
		}
		break;
	}
	argc -= optind;
	argv += optind;

	if (argc > 0 && ! strcasecmp(*argv, "help"))
		usage();

	if (! cdname) {
		cdname = DEFAULT_CD_DRIVE;
		fprintf(stderr,
		    "No CD device name specified. Defaulting to %s.\n", cdname);
	}

	if (argc > 0) {
		char buf[80], *p;
		int len;

		for (p=buf; argc-->0; ++argv) {
			len = strlen(*argv);

			if (p + len >= buf + sizeof (buf) - 1)
				usage();

			if (p > buf)
				*p++ = ' ';

			strcpy(p, *argv);	/* ok */
			p += len;
		}
		*p = 0;
		arg = parse(buf, &cmd);
		return (run(cmd, arg));
	}

	if (verbose == 1)
		verbose = isatty(0);

	if (verbose) {
		printf("Compact Disc Control utility, version %s\n", VERSION);
		printf("Type `?' for command list\n\n");
	}

	switch_el();

	for (;;) {
		arg = input(&cmd);
		if (run(cmd, arg) < 0) {
			if (verbose)
				warn(NULL);
			close(fd);
			fd = -1;
		}
		fflush(stdout);
	}
}

int
run(int cmd, char *arg)
{
	int l, r, rc;
	static char newcdname[MAXPATHLEN];

	switch (cmd) {

	case CMD_QUIT:
		switch_el();
		exit(0);

	case CMD_INFO:
		if (fd < 0 && ! open_cd(cdname))
			return (0);

		return info(arg);

	case CMD_CDDB:
		if (fd < 0 && ! open_cd(cdname))
			return (0);

		return cddbinfo(arg);

	case CMD_CDID:
		if (fd < 0 && ! open_cd(cdname))
			return (0);
		return cdid();

	case CMD_STATUS:
		if (fd < 0 && ! open_cd(cdname))
			return (0);

		return pstatus(arg);

	case CMD_PAUSE:
		if (fd < 0 && ! open_cd(cdname))
			return (0);

		return ioctl(fd, CDIOCPAUSE);

	case CMD_RESUME:
		if (fd < 0 && ! open_cd(cdname))
			return (0);

		return ioctl(fd, CDIOCRESUME);

	case CMD_STOP:
		if (fd < 0 && ! open_cd(cdname))
			return (0);

		rc = ioctl(fd, CDIOCSTOP);

		(void) ioctl(fd, CDIOCALLOW);

		return (rc);

	case CMD_RESET:
		if (fd < 0 && ! open_cd(cdname))
			return (0);

		rc = ioctl(fd, CDIOCRESET);
		if (rc < 0)
			return rc;
		close(fd);
		fd = -1;
		return (0);

	case CMD_DEBUG:
		if (fd < 0 && ! open_cd(cdname))
			return (0);

		if (! strcasecmp(arg, "on"))
			return ioctl(fd, CDIOCSETDEBUG);

		if (! strcasecmp(arg, "off"))
			return ioctl(fd, CDIOCCLRDEBUG);

		printf("%s: Invalid command arguments\n", __progname);

		return (0);

	case CMD_DEVICE:
		/* close old device */
		if (fd > -1) {
			(void) ioctl(fd, CDIOCALLOW);
			close(fd);
			fd = -1;
		}

		/* open new device */
		if (!open_cd(arg))
			return (0);
		(void) strlcpy(newcdname, arg, sizeof(newcdname));
		cdname = newcdname;
		return (1);

	case CMD_EJECT:
		if (fd < 0 && ! open_cd(cdname))
			return (0);

		(void) ioctl(fd, CDIOCALLOW);
		rc = ioctl(fd, CDIOCEJECT);
		if (rc < 0)
			return (rc);
#if defined(__OpenBSD__)
		close(fd);
		fd = -1;
#endif
		if (track_names)
			free_names(track_names);
		track_names = NULL;
		return (0);

	case CMD_CLOSE:
#if defined(CDIOCCLOSE)
		if (fd < 0 && ! open_cd(cdname))
			return (0);

		(void) ioctl(fd, CDIOCALLOW);
		rc = ioctl(fd, CDIOCCLOSE);
		if (rc < 0)
			return (rc);
		close(fd);
		fd = -1;
		return (0);
#else
		printf("%s: Command not yet supported\n", __progname);
		return (0);
#endif

	case CMD_PLAY:
		if (fd < 0 && ! open_cd(cdname))
			return (0);

		while (isspace(*arg))
			arg++;

		return play(arg);

	case CMD_SET:
		if (!strcasecmp(arg, "msf"))
			msf = 1;
		else if (!strcasecmp(arg, "lba"))
			msf = 0;
		else
			printf("%s: Invalid command arguments\n", __progname);
		return (0);

	case CMD_VOLUME:
		if (fd < 0 && !open_cd(cdname))
			return (0);

		if (!strncasecmp(arg, "left", strlen(arg)))
			return ioctl(fd, CDIOCSETLEFT);

		if (!strncasecmp(arg, "right", strlen(arg)))
			return ioctl(fd, CDIOCSETRIGHT);

		if (!strncasecmp(arg, "mono", strlen(arg)))
			return ioctl(fd, CDIOCSETMONO);

		if (!strncasecmp(arg, "stereo", strlen(arg)))
			return ioctl(fd, CDIOCSETSTEREO);

		if (!strncasecmp(arg, "mute", strlen(arg)))
			return ioctl(fd, CDIOCSETMUTE);

		if (2 != sscanf(arg, "%d %d", &l, &r)) {
			printf("%s: Invalid command arguments\n", __progname);
			return (0);
		}

		return setvol(l, r);

	case CMD_NEXT:
		if (fd < 0 && ! open_cd(cdname))
			return (0);

		return play_next(arg);

	case CMD_PREV:
		if (fd < 0 && ! open_cd(cdname))
			return (0);

		return play_prev(arg);

	case CMD_REPLAY:
		if (fd < 0 && ! open_cd(cdname))
			return 0;

		return play_same(arg);
	default:
	case CMD_HELP:
		help();
		return (0);

	}
}

int
play(char *arg)
{
	struct ioc_toc_header h;
	int rc, n, start, end = 0, istart = 1, iend = 1;

	rc = ioctl(fd, CDIOREADTOCHEADER, &h);

	if (rc < 0)
		return (rc);

	n = h.ending_track - h.starting_track + 1;
	rc = read_toc_entrys((n + 1) * sizeof (struct cd_toc_entry));

	if (rc < 0)
		return (rc);

	if (! arg || ! *arg) {
		/* Play the whole disc */
		
		return (play_track(h.starting_track, 1, 
		    h.ending_track, 1));
	}

	if (strchr(arg, '#')) {
		/* Play block #blk [ len ] */
		int blk, len = 0;

		if (2 != sscanf(arg, "#%d%d", &blk, &len) &&
		    1 != sscanf(arg, "#%d", &blk))
			goto Clean_up;

		if (len == 0) {
			if (msf)
				len = msf2lba(toc_buffer[n].addr.msf.minute,
				    toc_buffer[n].addr.msf.second,
				    toc_buffer[n].addr.msf.frame) - blk;
			else
				len = ntohl(toc_buffer[n].addr.lba) - blk;
		}
		return play_blocks(blk, len);
	}

	if (strchr(arg, ':')) {
		/*
		 * Play MSF m1:s1 [ .f1 ] [ m2:s2 [ .f2 ] ]
		 *
		 * Will now also undestand timed addresses relative
		 * to the beginning of a track in the form...
		 *
		 *      tr1 m1:s1[.f1] [[tr2] [m2:s2[.f2]]]
		 */
		int tr1, tr2;
		unsigned int m1, m2, s1, s2, f1, f2;
		unsigned char tm, ts, tf;

		tr2 = m2 = s2 = f2 = f1 = 0;
		if (8 == sscanf(arg, "%d %d:%d.%d %d %d:%d.%d",
		    &tr1, &m1, &s1, &f1, &tr2, &m2, &s2, &f2))
			goto Play_Relative_Addresses;

		tr2 = m2 = s2 = f2 = f1 = 0;
		if (7 == sscanf(arg, "%d %d:%d %d %d:%d.%d",
		    &tr1, &m1, &s1, &tr2, &m2, &s2, &f2))
			goto Play_Relative_Addresses;

		tr2 = m2 = s2 = f2 = f1 = 0;
		if (7 == sscanf(arg, "%d %d:%d.%d %d %d:%d",
		    &tr1, &m1, &s1, &f1, &tr2, &m2, &s2))
			goto Play_Relative_Addresses;

		tr2 = m2 = s2 = f2 = f1 = 0;
		if (7 == sscanf(arg, "%d %d:%d.%d %d:%d.%d",
		    &tr1, &m1, &s1, &f1, &m2, &s2, &f2))
			goto Play_Relative_Addresses;

		tr2 = m2 = s2 = f2 = f1 = 0;
		if (6 == sscanf(arg, "%d %d:%d.%d %d:%d",
		    &tr1, &m1, &s1, &f1, &m2, &s2))
			goto Play_Relative_Addresses;

		tr2 = m2 = s2 = f2 = f1 = 0;
		if (6 == sscanf(arg, "%d %d:%d %d:%d.%d",
		    &tr1, &m1, &s1, &m2, &s2, &f2))
			goto Play_Relative_Addresses;

		tr2 = m2 = s2 = f2 = f1 = 0;
		if (6 == sscanf(arg, "%d %d:%d.%d %d %d",
		    &tr1, &m1, &s1, &f1, &tr2, &m2))
			goto Play_Relative_Addresses;

		tr2 = m2 = s2 = f2 = f1 = 0;
		if (5 == sscanf(arg, "%d %d:%d %d:%d", &tr1, &m1, &s1, &m2, &s2))
			goto Play_Relative_Addresses;

		tr2 = m2 = s2 = f2 = f1 = 0;
		if (5 == sscanf(arg, "%d %d:%d %d %d",
		    &tr1, &m1, &s1, &tr2, &m2))
			goto Play_Relative_Addresses;

		tr2 = m2 = s2 = f2 = f1 = 0;
		if (5 == sscanf(arg, "%d %d:%d.%d %d",
		    &tr1, &m1, &s1, &f1, &tr2))
			goto Play_Relative_Addresses;

		tr2 = m2 = s2 = f2 = f1 = 0;
		if (4 == sscanf(arg, "%d %d:%d %d", &tr1, &m1, &s1, &tr2))
			goto Play_Relative_Addresses;

		tr2 = m2 = s2 = f2 = f1 = 0;
		if (4 == sscanf(arg, "%d %d:%d.%d", &tr1, &m1, &s1, &f1))
			goto Play_Relative_Addresses;

		tr2 = m2 = s2 = f2 = f1 = 0;
		if (3 == sscanf(arg, "%d %d:%d", &tr1, &m1, &s1))
			goto Play_Relative_Addresses;

		tr2 = m2 = s2 = f2 = f1 = 0;
		goto Try_Absolute_Timed_Addresses;

Play_Relative_Addresses:
		if (tr1 <= 0)
			tr1 = 1;
		else if (tr1 > n)
			tr1 = n;

		if (msf) {
			tm = toc_buffer[tr1].addr.msf.minute;
			ts = toc_buffer[tr1].addr.msf.second;
			tf = toc_buffer[tr1].addr.msf.frame;
		} else
			lba2msf(ntohl(toc_buffer[tr1].addr.lba),
				&tm, &ts, &tf);
		if ((m1 > tm)
		    || ((m1 == tm)
		    && ((s1 > ts)
		    || ((s1 == ts)
		    && (f1 > tf))))) {
			printf("Track %d is not that long.\n", tr1);
			return (0);
		}

		tr1--;

		f1 += tf;
		if (f1 >= 75) {
			s1 += f1 / 75;
			f1 %= 75;
		}

		s1 += ts;
		if (s1 >= 60) {
			m1 += s1 / 60;
			s1 %= 60;
		}

		m1 += tm;

		if (tr2 <= 0) {
			if (m2 || s2 || f2) {
				tr2 = tr1;
				f2 += f1;
				if (f2 >= 75) {
					s2 += f2 / 75;
					f2 %= 75;
				}

				s2 += s1;
				if (s2 > 60) {
					m2 += s2 / 60;
					s2 %= 60;
				}

				m2 += m1;
			} else {
				tr2 = n;
				if (msf) {
					m2 = toc_buffer[n].addr.msf.minute;
					s2 = toc_buffer[n].addr.msf.second;
					f2 = toc_buffer[n].addr.msf.frame;
				} else {
					lba2msf(ntohl(toc_buffer[n].addr.lba),
						&tm, &ts, &tf);
					m2 = tm;
					s2 = ts;
					f2 = tf;
				}
			}
		} else if (tr2 > n) {
			tr2 = n;
			m2 = s2 = f2 = 0;
		} else {
			if (m2 || s2 || f2)
				tr2--;
			if (msf) {
				tm = toc_buffer[tr2].addr.msf.minute;
				ts = toc_buffer[tr2].addr.msf.second;
				tf = toc_buffer[tr2].addr.msf.frame;
			} else
				lba2msf(ntohl(toc_buffer[tr2].addr.lba),
					&tm, &ts, &tf);
			f2 += tf;
			if (f2 >= 75) {
				s2 += f2 / 75;
				f2 %= 75;
			}

			s2 += ts;
			if (s2 > 60) {
				m2 += s2 / 60;
				s2 %= 60;
			}

			m2 += tm;
		}

		if (msf) {
			tm = toc_buffer[n].addr.msf.minute;
			ts = toc_buffer[n].addr.msf.second;
			tf = toc_buffer[n].addr.msf.frame;
		} else
			lba2msf(ntohl(toc_buffer[n].addr.lba),
				&tm, &ts, &tf);
		if ((tr2 < n)
		    && ((m2 > tm)
		    || ((m2 == tm)
		    && ((s2 > ts)
		    || ((s2 == ts)
		    && (f2 > tf)))))) {
			printf("The playing time of the disc is not that long.\n");
			return (0);
		}
		return (play_msf(m1, s1, f1, m2, s2, f2));

Try_Absolute_Timed_Addresses:
		if (6 != sscanf(arg, "%d:%d.%d%d:%d.%d",
		    &m1, &s1, &f1, &m2, &s2, &f2) &&
		    5 != sscanf(arg, "%d:%d.%d%d:%d", &m1, &s1, &f1, &m2, &s2) &&
		    5 != sscanf(arg, "%d:%d%d:%d.%d", &m1, &s1, &m2, &s2, &f2) &&
		    3 != sscanf(arg, "%d:%d.%d", &m1, &s1, &f1) &&
		    4 != sscanf(arg, "%d:%d%d:%d", &m1, &s1, &m2, &s2) &&
		    2 != sscanf(arg, "%d:%d", &m1, &s1))
			goto Clean_up;

		if (m2 == 0) {
			if (msf) {
				m2 = toc_buffer[n].addr.msf.minute;
				s2 = toc_buffer[n].addr.msf.second;
				f2 = toc_buffer[n].addr.msf.frame;
			} else {
				lba2msf(ntohl(toc_buffer[n].addr.lba),
					&tm, &ts, &tf);
				m2 = tm;
				s2 = ts;
				f2 = tf;
			}
		}
		return play_msf(m1, s1, f1, m2, s2, f2);
	}

	/*
	 * Play track trk1 [ .idx1 ] [ trk2 [ .idx2 ] ]
	 */
	if (4 != sscanf(arg, "%d.%d%d.%d", &start, &istart, &end, &iend) &&
	    3 != sscanf(arg, "%d.%d%d", &start, &istart, &end) &&
	    3 != sscanf(arg, "%d%d.%d", &start, &end, &iend) &&
	    2 != sscanf(arg, "%d.%d", &start, &istart) &&
	    2 != sscanf(arg, "%d%d", &start, &end) &&
	    1 != sscanf(arg, "%d", &start))
		goto Clean_up;

	if (end == 0)
		end = h.ending_track;
	return (play_track(start, istart, end, iend));

Clean_up:
	printf("%s: Invalid command arguments\n", __progname);
	return (0);
}

int
play_prev(char *arg)
{
	int trk, min, sec, frm, rc;
	struct ioc_toc_header h;

	if (status(&trk, &min, &sec, &frm) >= 0) {
		trk--;

		rc = ioctl(fd, CDIOREADTOCHEADER, &h);
		if (rc < 0) {
			warn("getting toc header");
			return (rc);
		}

		if (trk < h.starting_track)
			return play_track(h.starting_track, 1, 
			    h.ending_track + 1, 1);
		return play_track(trk, 1, h.ending_track, 1);
	}

	return (0);
}

int
play_same(char *arg)
{
	int trk, min, sec, frm, rc;
	struct ioc_toc_header h;

	if (status (&trk, &min, &sec, &frm) >= 0) {
		rc = ioctl(fd, CDIOREADTOCHEADER, &h);
		if (rc < 0) {
			warn("getting toc header");
			return (rc);
		}

		return play_track(trk, 1, h.ending_track, 1);
	}

	return (0);
}

int
play_next(char *arg)
{
	int trk, min, sec, frm, rc;
	struct ioc_toc_header h;

	if (status(&trk, &min, &sec, &frm) >= 0) {
		trk++;
		rc = ioctl(fd, CDIOREADTOCHEADER, &h);
		if (rc < 0) {
			warn("getting toc header");
			return (rc);
		}

		if (trk > h.ending_track) {
			printf("%s: end of CD\n", __progname);

			rc = ioctl(fd, CDIOCSTOP);

			(void) ioctl(fd, CDIOCALLOW);

			return (rc);
		}

		return play_track(trk, 1, h.ending_track, 1);
	}

	return (0);
}

char *
strstatus(int sts)
{
	switch (sts) {
	case ASTS_INVALID:
		return ("invalid");
	case ASTS_PLAYING:
		return ("playing");
	case ASTS_PAUSED:
		return ("paused");
	case ASTS_COMPLETED:
		return ("completed");
	case ASTS_ERROR:
		return ("error");
	case ASTS_VOID:
		return ("void");
	default:
		return ("??");
	}
}

int
pstatus(char *arg)
{
	struct ioc_vol v;
	struct ioc_read_subchannel ss;
	struct cd_sub_channel_info data;
	int rc, trk, m, s, f;
	char vis_catalog[1 + 4 * 15];

	rc = status(&trk, &m, &s, &f);
	if (rc >= 0) {
		if (verbose) {
			if (track_names)
				printf("Audio status = %d<%s>, "
				    "current track = %d (%s)\n"
				    "\tcurrent position = %d:%02d.%02d\n",
				    rc, strstatus(rc), trk,
				    trk ? track_names[trk-1] : "", m, s, f);
			else
				printf("Audio status = %d<%s>, "
				    "current track = %d, "
				    "current position = %d:%02d.%02d\n",
				    rc, strstatus(rc), trk, m, s, f);
		} else
			printf("%d %d %d:%02d.%02d\n", rc, trk, m, s, f);
	} else
		printf("No current status info available\n");

	bzero(&ss, sizeof (ss));
	ss.data = &data;
	ss.data_len = sizeof (data);
	ss.address_format = msf ? CD_MSF_FORMAT : CD_LBA_FORMAT;
	ss.data_format = CD_MEDIA_CATALOG;
	rc = ioctl(fd, CDIOCREADSUBCHANNEL, (char *) &ss);
	if (rc >= 0) {
		printf("Media catalog is %sactive",
		ss.data->what.media_catalog.mc_valid ? "": "in");
		if (ss.data->what.media_catalog.mc_valid &&
		    ss.data->what.media_catalog.mc_number[0]) {
		    	strvisx(vis_catalog,
			   ss.data->what.media_catalog.mc_number,
			   15, VIS_SAFE);
			printf(", number \"%.15s\"", vis_catalog);
		}
		putchar('\n');
	} else
		printf("No media catalog info available\n");

	rc = ioctl(fd, CDIOCGETVOL, &v);
	if (rc >= 0) {
		if (verbose)
			printf("Left volume = %d, right volume = %d\n",
				v.vol[0], v.vol[1]);
		else
			printf("%d %d\n", v.vol[0], v.vol[1]);
	} else
		printf("No volume level info available\n");
	return(0);
}

int
cdid()
{
	unsigned long id;
	struct ioc_toc_header h;
	int rc, n;

	rc = ioctl(fd, CDIOREADTOCHEADER, &h);
	if (rc == -1) {
		warn("getting toc header");
		return (rc);
	}

	n = h.ending_track - h.starting_track + 1;
	rc = read_toc_entrys((n + 1) * sizeof (struct cd_toc_entry));
	if (rc < 0)
		return (rc);

	id = cddb_discid(n, toc_buffer);
	if (id) {
		if (verbose)
			printf("CDID=");
		printf("%08lx\n", id);
	}
	return id ? 0 : 1;
}

int
info(char *arg)
{
	struct ioc_toc_header h;
	int rc, i, n;

	rc = ioctl(fd, CDIOREADTOCHEADER, &h);
	if (rc >= 0) {
		if (verbose)
			printf("Starting track = %d, ending track = %d, TOC size = %d bytes\n",
			    h.starting_track, h.ending_track, h.len);
		else
			printf("%d %d %d\n", h.starting_track,
			    h.ending_track, h.len);
	} else {
		warn("getting toc header");
		return (rc);
	}

	n = h.ending_track - h.starting_track + 1;
	rc = read_toc_entrys((n + 1) * sizeof (struct cd_toc_entry));
	if (rc < 0)
		return (rc);

	if (verbose) {
		printf("track     start  duration   block  length   type\n");
		printf("-------------------------------------------------\n");
	}

	for (i = 0; i < n; i++) {
		printf("%5d  ", toc_buffer[i].track);
		prtrack(toc_buffer + i, 0, NULL);
	}
	printf("%5d  ", toc_buffer[n].track);
	prtrack(toc_buffer + n, 1, NULL);
	return (0);
}

int
cddbinfo(char *arg)
{
	struct ioc_toc_header h;
	int rc, i, n;

	rc = ioctl(fd, CDIOREADTOCHEADER, &h);
	if (rc == -1) {
		warn("getting toc header");
		return (rc);
	}

	n = h.ending_track - h.starting_track + 1;
	rc = read_toc_entrys((n + 1) * sizeof (struct cd_toc_entry));
	if (rc < 0)
		return (rc);

	if (track_names)
		free_names(track_names);
	track_names = NULL;

	track_names = cddb(cddb_host, n, toc_buffer, arg);
	if (!track_names)
		return(0);

	printf("-------------------------------------------------\n");

	for (i = 0; i < n; i++) {
		printf("%5d  ", toc_buffer[i].track);
		prtrack(toc_buffer + i, 0, track_names[i]);
	}
	printf("%5d  ", toc_buffer[n].track);
	prtrack(toc_buffer + n, 1, "");
	return (0);
}

void
lba2msf(unsigned long lba, u_char *m, u_char *s, u_char *f)
{
	lba += 150;		/* block start offset */
	lba &= 0xffffff;	/* negative lbas use only 24 bits */
	*m = lba / (60 * 75);
	lba %= (60 * 75);
	*s = lba / 75;
	*f = lba % 75;
}

unsigned int
msf2lba(u_char m, u_char s, u_char f)
{
	return (((m * 60) + s) * 75 + f) - 150;
}

unsigned long
entry2time(struct cd_toc_entry *e)
{
	int block;
	u_char m, s, f;

	if (msf) {
		return (e->addr.msf.minute * 60 + e->addr.msf.second);
	} else {
		block = ntohl(e->addr.lba);
		lba2msf(block, &m, &s, &f);
		return (m*60+s);
	}
}

unsigned long
entry2frames(struct cd_toc_entry *e)
{
	int block;
	unsigned char m, s, f;

	if (msf) {
		return e->addr.msf.frame + e->addr.msf.second * 75 +
		    e->addr.msf.minute * 60 * 75;
	} else {
		block = ntohl(e->addr.lba);
		lba2msf(block, &m, &s, &f);
		return f + s * 75 + m * 60 * 75;
	}
}

void
prtrack(struct cd_toc_entry *e, int lastflag, char *name)
{
	int block, next, len;
	u_char m, s, f;

	if (msf) {
		if (!name || lastflag)
			/* Print track start */
			printf("%2d:%02d.%02d  ", e->addr.msf.minute,
			    e->addr.msf.second, e->addr.msf.frame);

		block = msf2lba(e->addr.msf.minute, e->addr.msf.second,
			e->addr.msf.frame);
	} else {
		block = ntohl(e->addr.lba);
		if (!name || lastflag) {
			lba2msf(block, &m, &s, &f);
			/* Print track start */
			printf("%2d:%02d.%02d  ", m, s, f);
	    	}
	}
	if (lastflag) {
		if (!name)
			/* Last track -- print block */
			printf("       -  %6d       -      -\n", block);
		else
			printf("\n");
		return;
	}

	if (msf)
		next = msf2lba(e[1].addr.msf.minute, e[1].addr.msf.second,
			e[1].addr.msf.frame);
	else
		next = ntohl(e[1].addr.lba);
	len = next - block;
	lba2msf(len, &m, &s, &f);

	if (name)
		printf("%2d:%02d.%02d  %s\n", m, s, f, name);
	/* Print duration, block, length, type */
	else
		printf("%2d:%02d.%02d  %6d  %6d  %5s\n", m, s, f, block, len,
		    (e->control & 4) ? "data" : "audio");
}

int
play_track(int tstart, int istart, int tend, int iend)
{
	struct ioc_play_track t;

	t.start_track = tstart;
	t.start_index = istart;
	t.end_track = tend;
	t.end_index = iend;

	return ioctl(fd, CDIOCPLAYTRACKS, &t);
}

int
play_blocks(int blk, int len)
{
	struct ioc_play_blocks  t;

	t.blk = blk;
	t.len = len;

	return ioctl(fd, CDIOCPLAYBLOCKS, &t);
}

int
setvol(int left, int right)
{
	struct ioc_vol  v;

	v.vol[0] = left;
	v.vol[1] = right;
	v.vol[2] = 0;
	v.vol[3] = 0;

	return ioctl(fd, CDIOCSETVOL, &v);
}

int
read_toc_entrys(int len)
{
	struct ioc_read_toc_entry t;

	if (toc_buffer) {
		free(toc_buffer);
		toc_buffer = 0;
	}

	toc_buffer = malloc(len);

	if (!toc_buffer) {
		errno = ENOMEM;
		return (-1);
	}

	t.address_format = msf ? CD_MSF_FORMAT : CD_LBA_FORMAT;
	t.starting_track = 0;
	t.data_len = len;
	t.data = toc_buffer;

	return (ioctl(fd, CDIOREADTOCENTRYS, (char *) &t));
}

int
play_msf(int start_m, int start_s, int start_f, int end_m, int end_s, int end_f)
{
	struct ioc_play_msf a;

	a.start_m = start_m;
	a.start_s = start_s;
	a.start_f = start_f;
	a.end_m = end_m;
	a.end_s = end_s;
	a.end_f = end_f;

	return ioctl(fd, CDIOCPLAYMSF, (char *) &a);
}

int 
status(int *trk, int *min, int *sec, int *frame)
{
	struct ioc_read_subchannel s;
	struct cd_sub_channel_info data;
	u_char mm, ss, ff;

	bzero(&s, sizeof (s));
	s.data = &data;
	s.data_len = sizeof (data);
	s.address_format = msf ? CD_MSF_FORMAT : CD_LBA_FORMAT;
	s.data_format = CD_CURRENT_POSITION;

	if (ioctl(fd, CDIOCREADSUBCHANNEL, (char *) &s) < 0)
		return -1;

	*trk = s.data->what.position.track_number;
	if (msf) {
		*min = s.data->what.position.reladdr.msf.minute;
		*sec = s.data->what.position.reladdr.msf.second;
		*frame = s.data->what.position.reladdr.msf.frame;
	} else {
		lba2msf(ntohl(s.data->what.position.reladdr.lba),
		    &mm, &ss, &ff);
		*min = mm;
		*sec = ss;
		*frame = ff;
	}

	return s.data->header.audio_status;
}

char *
input(int *cmd)
{
	char *buf;
	int siz = 0;
	char *p;

	do {
		if ((buf = (char *) el_gets(el, &siz)) == NULL || !siz) {
			*cmd = CMD_QUIT;
			fprintf(stderr, "\r\n");
			return (0);
		}
		if (strlen(buf) > 1)
			history(hist, H_ENTER, buf);
		p = parse(buf, cmd);
	} while (!p);
	return (p);
}

char *
parse(char *buf, int *cmd)
{
	struct cmdtab *c;
	char *p;
	int len;

	for (p=buf; isspace(*p); p++)
		continue;

	if (isdigit(*p) || (p[0] == '#' && isdigit(p[1]))) {
		*cmd = CMD_PLAY;
		return (p);
	}

	for (buf = p; *p && ! isspace(*p); p++)
		continue;
  
	len = p - buf;
	if (! len)
		return (0);

	if (*p) {		/* It must be a spacing character! */
		char *q;

		*p++ = 0;
		for (q=p; *q && *q != '\n' && *q != '\r'; q++)
			continue;
		*q = 0;
	}

	*cmd = -1;
	for (c=cmdtab; c->name; ++c) {
		/* Is it an exact match? */
		if (! strcasecmp(buf, c->name)) {
  			*cmd = c->command;
  			break;
  		}

		/* Try short hand forms then... */
		if (len >= c->min && ! strncasecmp(buf, c->name, len)) {
			if (*cmd != -1 && *cmd != c->command) {
				fprintf(stderr, "Ambiguous command\n");
				return (0);
			}
			*cmd = c->command;
  		}
	}

	if (*cmd == -1) {
		fprintf(stderr, "%s: Invalid command, enter ``help'' for commands.\n",
		    __progname);
		return (0);
	}

	while (isspace(*p))
		p++;
	return p;
}

int
open_cd(char *dev)
{
	char *realdev;
	int tries;

	if (fd > -1)
		return (1);

	for (tries = 0; fd < 0 && tries < 10; tries++) {
		fd = opendev(dev, O_RDONLY, OPENDEV_PART, &realdev);
		if (fd < 0) {
			if (errno == ENXIO) {
				/*  ENXIO has an overloaded meaning here.
				 *  The original "Device not configured" should
				 *  be interpreted as "No disc in drive %s". */
				warnx("No disc in drive %s.", realdev);
				return (0);
			} else if (errno != EIO) {
				/*  EIO may simply mean the device is not ready
				 *  yet which is common with CD changers. */
				warn("Can't open %s", realdev);
				return (0);
			}
		}
		sleep(1);
	}
	if (fd < 0) {
		warn("Can't open %s", realdev);
		return (0);
	}
	return (1);
}

char *
prompt(void)
{
	return (verbose ? "cdio> " : "");
}

void
switch_el(void)
{
	if (el == NULL && hist == NULL) {
		el = el_init(__progname, stdin, stdout);
		hist = history_init();
		history(hist, H_EVENT, 100);
		el_set(el, EL_HIST, history, hist);
		el_set(el, EL_EDITOR, "emacs");
		el_set(el, EL_PROMPT, prompt);
		el_set(el, EL_SIGNAL, 1);
		el_source(el, NULL);

	} else {
		if (hist != NULL) {
			history_end(hist);
			hist = NULL;
		}
		if (el != NULL) {
			el_end(el);
			el = NULL;
		}
	}
}