Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdemultimedia@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 890 insertions, 0 deletions

diff --git a/kscd/libwm/cdinfo.c b/kscd/libwm/cdinfo.c
new file mode 100644
index 00000000..b04dec69
--- /dev/null
+++ b/kscd/libwm/cdinfo.c
@@ -0,0 +1,890 @@
+/*
+ * $Id$
+ * 
+ * This file is part of WorkMan, the civilized CD player library
+ * (c) 1991-1997 by Steven Grimm (original author)
+ * (c) by Dirk Försterling (current 'author' = maintainer)
+ * The maintainer can be contacted by his e-mail address:
+ * milliByte@DeathsDoor.com 
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ *
+ * Get information about a CD.
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+
+#include "include/wm_config.h"
+
+#include "include/wm_struct.h"
+#include "include/wm_cdrom.h"
+#include "include/wm_cdinfo.h"
+#include "include/wm_database.h"
+#include "include/wm_helpers.h"
+
+struct wm_play *playlist = NULL;
+struct wm_cdinfo thiscd, *cd = &thiscd;
+
+int	cur_track = -1;	/* Current track number, starting at 1 */
+int	cur_index = 0;	/* Current index mark */
+int	cur_lasttrack = 999;	/* Last track to play in current chunk */
+int	cur_firsttrack = 0;	/* First track of current chunk */
+int	cur_pos_abs;	/* Current absolute position in seconds */
+int	cur_frame;	/* Current frame number */
+int	cur_pos_rel;	/* Current track-relative position in seconds */
+int	cur_tracklen;	/* Length in seconds of current track */
+int	cur_cdlen;	/* Length in seconds of entire CD */
+int	cur_ntracks;	/* Number of tracks on CD (= tracks + sections) */
+int	cur_nsections;	/* Number of sections currently defined */
+
+int	cur_listno;	/* Current index into the play list, if playing */
+char *	cur_artist;	/* Name of current CD's artist */
+char *	cur_cdname;	/* Album name */
+char *	cur_trackname;	/* Take a guess */
+char	cur_contd;	/* Continued flag */
+char	cur_avoid;	/* Avoid flag */
+
+int	exit_on_eject = 0;
+
+int cur_stopmode = -1;
+int info_modified;
+
+/*
+ * insert_trackinfo()
+ *
+ * Add a new track to the CD info structure.  Pass the position of the new
+ * entry in the track list -- 0 will make this the first track, 1 the second,
+ * etc.  The new entry will be zeroed out.
+ */
+static void
+insert_trackinfo(int num)
+{
+	struct wm_trackinfo *newtrk;
+
+	/* Easy case: the list is empty */
+	if (cd->trk == NULL) {
+		if ((cd->trk = (struct wm_trackinfo *) calloc(1,
+						sizeof(*newtrk))) == NULL)
+		{
+			perror("insert_trackinfo");
+			exit(1);
+		} else {
+			return;
+                } /* if() else */
+        } /* if() */
+	/* Stick the new entry in cd->trk[]. */
+	if ((newtrk = (struct wm_trackinfo *) malloc(sizeof(*newtrk) *
+						(cur_ntracks + 1))) == NULL)
+	{
+		perror("insert_trackinfo");
+		exit(1);
+	}
+
+	if (num)
+		memcpy(newtrk, cd->trk, sizeof(*newtrk) * num);
+	memset(&newtrk[num], 0, sizeof(*newtrk));
+	if (num < cur_ntracks)
+		memcpy(&newtrk[num + 1], &cd->trk[num], sizeof(*newtrk) *
+			(cur_ntracks - num));
+
+	free(cd->trk);
+	cd->trk = newtrk;
+}
+
+/*
+ * split_trackinfo()
+ *
+ * Split a track in two at a particular position (absolute, in frames).  All
+ * internal data structures and variables will be adjusted to the new
+ * numbering scheme.  Pass in the track number (>=1) to split, which is also
+ * the index into cd->trk[] of the new entry.
+ *
+ * If pos is within 1 second of the start of another track, the split fails.
+ *
+ * Returns 1 on success, 0 if the track couldn't be inserted.
+ *
+ * Note: updating user interface elements is up to the caller.
+ */
+int
+split_trackinfo( int pos )
+{
+	int	i, l, num;
+
+	if (pos < cd->trk[0].start)
+		return (0);
+
+	/* First find the appropriate track. */
+	for (num = 0; num < cur_ntracks; num++)
+		if (cd->trk[num].start - 75 < pos &&
+						cd->trk[num].start + 75 > pos)
+			return (0);
+		else if (cd->trk[num].start > pos)
+			break;
+	if (num == 0)
+		return (0);
+
+	/* Insert the new entry into the track array. */
+	insert_trackinfo(num);
+
+	/* Update the easy variables. */
+	if (cur_track > num)
+		cur_track++;
+	if (cur_firsttrack > num)
+		cur_firsttrack++;
+	if (cur_lasttrack > num)
+		cur_lasttrack++;
+
+	/* Update the user-defined playlists. */
+	if (cd->lists != NULL)
+		for (l = 0; cd->lists[l].name != NULL; l++)
+			if (cd->lists[l].list != NULL)
+				for (i = 0; cd->lists[l].list[i]; i++)
+					if (cd->lists[l].list[i] > num)
+						cd->lists[l].list[i]++;
+
+	/* Update the internal playlist. */
+	if (playlist != NULL)
+		for (i = 0; playlist[i].start; i++)
+		{
+			if (playlist[i].start > num)
+				playlist[i].start++;
+			if (playlist[i].end > num)
+				playlist[i].end++;
+		}
+	
+	/* Now adjust the information in cd->trk[]. */
+	cd->trk[num].start = pos;
+	if (num == cur_ntracks)
+		cd->trk[num].length = cur_cdlen - pos / 75;
+	else
+		cd->trk[num].length = (cd->trk[num + 1].start - pos) / 75;
+	cd->trk[num - 1].length -= cd->trk[num].length;
+	if (cur_track == num)
+		cur_tracklen -= cd->trk[num].length;
+	cd->trk[num].track = cd->trk[num - 1].track;
+	cd->trk[num].data = cd->trk[num - 1].data;
+	cd->trk[num].contd = 1;
+	cd->trk[num].volume = cd->trk[num - 1].volume;
+
+	if (cd->trk[num - 1].section == 0)
+		cd->trk[num - 1].section = 1;
+	cd->trk[num].section = cd->trk[num - 1].section + 1;
+
+	cur_ntracks++;
+	cur_nsections++;
+
+	for (i = num + 1; i < cur_ntracks; i++)
+		if (cd->trk[i].track == cd->trk[num].track)
+			cd->trk[i].section++;
+	
+	return (1);
+}
+
+/*
+ * remove_trackinfo()
+ *
+ * Remove a track's internal data.  This is similar to split_trackinfo()
+ * above, but simpler.  A track's initial section can't be removed.  Track
+ * numbers start at 0.
+ *
+ * Returns 1 on success, 0 on failure.
+ */
+int
+remove_trackinfo( int num )
+{
+	int	i, l;
+
+	if (num < 1 || num >= cur_ntracks || cd->trk[num].section < 2)
+		return (0);
+	
+	cd->trk[num - 1].length += cd->trk[num].length;
+
+	for (i = num; i < cur_ntracks - 1; i++)
+		memcpy(&cd->trk[i], &cd->trk[i + 1], sizeof(cd->trk[0]));
+
+	if (cur_track > num)
+		cur_track--;
+	if (cur_firsttrack > num)
+		cur_firsttrack--;
+	if (cur_lasttrack > num)
+		cur_lasttrack--;
+	
+	/* Update the user-defined playlists. */
+	if (cd->lists != NULL)
+		for (l = 0; cd->lists[l].name != NULL; l++)
+			if (cd->lists[l].list != NULL)
+				for (i = 0; cd->lists[l].list[i]; i++)
+					if (cd->lists[l].list[i] > num)
+						cd->lists[l].list[i]--;
+	
+	/* Update the internal playlist. */
+	if (playlist != NULL)
+		for (i = 0; playlist[i].start; i++)
+		{
+			if (playlist[i].start > num)
+				playlist[i].start--;
+			if (playlist[i].end > num)
+				playlist[i].end--;
+		}
+	
+	cur_ntracks--;
+	cur_nsections--;
+
+	/*
+	 * Update the section numbers for this track.  If this is the only
+	 * user-created section in a track, get rid of the section number
+	 * in the track's entry.
+	 */
+	if (num == cur_ntracks || cd->trk[num - 1].track != cd->trk[num].track)
+	{
+		if (cd->trk[num - 1].section == 1)
+			cd->trk[num - 1].section = 0;
+	}
+	else
+		for (i = num; i < cur_ntracks; i++)
+			if (cd->trk[i].track == cd->trk[num - 1].track)
+				cd->trk[i].section--;
+
+	return (1);
+}
+
+/*
+ * listentry()
+ *
+ * Return a scrolling list entry.
+ */
+char *
+listentry( int num )
+{
+	static char	buf[600];
+	const char *name;
+    char tracknum[20];
+	int		digits;
+	int		sdigits;
+
+	if (num >= 0 && num < cur_ntracks)
+	{
+
+/*
+		if (big_spaces)
+		{
+			digits = 2;
+			sdigits = cur_nsections < 9 ? -1 : -2;
+		}
+		else
+		{
+			digits = cd->trk[num].track < 10 ? 3 : 2;
+			sdigits = cur_nsections < 9 ? -1 : -3;
+		}
+*/
+
+		digits = 2;
+		sdigits = cur_nsections < 9 ? -1 : -2;
+
+		name = cd->trk[num].songname ? cd->trk[num].songname : "";
+
+		if (cur_nsections)
+	        {
+    			if (cd->trk[num].section > 9) 
+			{
+				sprintf(tracknum, "%*d.%d", digits,
+					cd->trk[num].track,
+					cd->trk[num].section);
+			} else {
+				if (cd->trk[num].section)
+				{
+					sprintf(tracknum, "%*d.%*d", digits,
+						cd->trk[num].track, sdigits,
+						cd->trk[num].section);
+				} else {
+					sprintf(tracknum, "%*d%*s", digits,
+						cd->trk[num].track,
+						2 - sdigits, " ");
+/*						2 - sdigits - big_spaces, " ");*/
+				}
+			}
+		} else {
+			sprintf(tracknum, "%*d", digits, cd->trk[num].track);
+		}
+
+		if (cd->trk[num].data)
+		{
+			sprintf(buf, "%s) %3dMB %s", tracknum,
+				cd->trk[num].length / 1024, name);
+		} else {
+			sprintf(buf, "%s) %02d:%02d %s", tracknum,
+				cd->trk[num].length / 60,
+				cd->trk[num].length % 60, name);
+                }
+
+		return (buf);
+	} else {
+		return (NULL);
+        }
+} /* listentry() */
+
+/*
+ * trackname()
+ *
+ * Return a track's name.
+ */
+const char *
+trackname( int num )
+{
+	if (num >= 0 && num < cur_ntracks) 
+	{
+		if (cd->trk[num].songname)
+		{
+			return (cd->trk[num].songname);
+		} else {
+			return ("");
+		}
+	} else {
+		return (NULL);
+	}
+} /* trackname() */
+
+/*
+ * tracklen()
+ *
+ * Return a track's length in seconds.
+ */
+int
+tracklen( int num )
+{
+	if (cd != NULL && num >= 0 && num < cur_ntracks)
+		return (cd->trk[num].length);
+	else
+		return (0);
+}
+
+/*
+ * get_default_volume()
+ *
+ * Return the default volume (0-32, 0=none) for the CD or a track.
+ */
+int
+get_default_volume( int track )
+{
+	if (! track)
+		return (cd->volume);
+	else if (track <= cur_ntracks)
+		return (cd->trk[track - 1].volume);
+	else
+		return (0);
+}
+
+/*
+ * get_contd()
+ *
+ * Return the contd value for a track.
+ */
+int
+get_contd( int num )
+{
+	if (num >= 0 && num < cur_ntracks)
+		return (cd->trk[num].contd);
+	else
+		return (0);
+}
+
+/*
+ * get_avoid()
+ *
+ * Return the avoid value for a track.
+ */
+int
+get_avoid( int num )
+{
+	if (num >= 0 && num < cur_ntracks)
+		return (cd->trk[num].avoid);
+	else
+		return (0);
+}
+
+/*
+ * get_autoplay()
+ *
+ * Is autoplay set on this disc?
+ */
+int
+get_autoplay( void )
+{
+	return ( cd->autoplay );
+}
+
+/*
+ * get_playmode()
+ *
+ * Return the default playmode for the CD.
+ */
+int
+get_playmode( void )
+{
+	return ( cd->playmode );
+}
+
+/*
+ * get_runtime()
+ *
+ * Return the total running time for the current playlist in seconds.
+ */
+int
+get_runtime( void )
+{
+	int	i;
+
+	if (playlist == NULL || playlist[0].start == 0 || cur_firsttrack == -1)
+		return (cd == NULL ? 0 : cd->length);
+
+	for (i = 0; playlist[i].start; i++)
+		;
+
+	return (playlist[i].starttime);
+}
+
+/*
+ * default_volume()
+ *
+ * Set the default volume for the CD or a track.
+ */
+void
+default_volume( int track, int vol )
+{
+	if (track == 0)
+		cd->volume = vol;
+	else if (track <= cur_ntracks)
+		cd->trk[track - 1].volume = vol;
+}
+
+/*
+ * Play the next thing on the playlist, if any.
+ */
+void
+play_next_entry( int forward )
+{
+	if (cd == NULL)
+		return;
+	if (playlist != NULL && playlist[cur_listno].start)
+	{
+		wm_cd_play(playlist[cur_listno].start, 0,
+			playlist[cur_listno].end);
+		cur_listno++;
+	}
+	else
+		wm_cd_stop();
+}
+
+/*
+ * Play the next track, following playlists as necessary.
+ */
+void
+play_next_track( int forward )
+{
+	if (cd == NULL)
+		return;
+
+	/* Is the current playlist entry done?  Move on, if so. */
+	if (playlist == NULL || cur_track + 1 == playlist[cur_listno - 1].end)
+		play_next_entry( forward );
+	else
+		wm_cd_play(cur_track + 1, 0, playlist[cur_listno - 1].end);
+}
+
+/*
+ * Play the previous track, hopping around the playlist as necessary.
+ */
+void
+play_prev_track( int forward )
+{
+	if (cd == NULL)
+		return;
+
+	if (playlist == NULL)
+		return;
+
+	/* If we're in the middle of this playlist entry, go back one track */
+	if (cur_track > playlist[cur_listno - 1].start)
+		wm_cd_play(cur_track - 1, 0, playlist[cur_listno - 1].end);
+	else
+		if (cur_listno > 1)
+		{
+			cur_listno--;
+			wm_cd_play(playlist[cur_listno - 1].end - 1, 0,
+				playlist[cur_listno - 1].end);
+		}
+		else
+			wm_cd_play(playlist[0].start, 0, playlist[0].end);
+}
+
+/*
+ * stash_cdinfo(artist, cdname)
+ */
+void
+stash_cdinfo(char *artist, char *cdname, int autoplay, int playmode )
+{
+	if (cd != NULL)
+	{
+		if (strcmp(cd->artist, artist))
+			info_modified = 1;
+		strncpy(cd->artist, artist,sizeof(cd->artist)-1);
+                cd->artist[sizeof(cd->artist)-1]='\0';
+
+		if (strcmp(cd->cdname, cdname))
+			info_modified = 1;
+		strncpy(cd->cdname, cdname,sizeof(cd->cdname)-1);
+                cd->cdname[sizeof(cd->cdname)-1]='\0';
+
+		if (!!cd->autoplay != !!autoplay)
+			info_modified = 1;
+		cd->autoplay = autoplay;
+
+		if (!!cd->playmode != !!playmode)
+			info_modified = 1;
+		cd->playmode = playmode;
+	}
+} /* stash_cdinfo() */
+
+/*
+ * wipe_cdinfo()
+ *
+ * Clear out all a CD's soft information (presumably in preparation for
+ * reloading from the database.)
+ */
+void
+wipe_cdinfo( void )
+{
+	struct wm_playlist	*l;
+	int		i;
+
+	if (cd != NULL)
+	{
+		cd->artist[0] = cd->cdname[0] = '\0';
+		cd->autoplay = cd->playmode = cd->volume = 0;
+		cd->whichdb = NULL;
+		freeup(&cd->otherrc);
+		freeup(&cd->otherdb);
+
+		if (thiscd.lists != NULL)
+		{
+			for (l = thiscd.lists; l->name != NULL; l++)
+			{
+				free(l->name);
+				free(l->list);
+			}
+			free(thiscd.lists);
+			thiscd.lists = NULL;
+		}
+
+		for (i = 0; i < cur_ntracks; i++)
+		{
+			freeup(&cd->trk[i].songname);
+			freeup(&cd->trk[i].otherrc);
+			freeup(&cd->trk[i].otherdb);
+			cd->trk[i].avoid = cd->trk[i].contd = 0;
+			cd->trk[i].volume = 0;
+			if (cd->trk[i].section > 1)
+				remove_trackinfo(i--);
+		}
+	}
+}
+
+/*
+ * stash_trkinfo(track, songname, contd, avoid)
+ *
+ * Update information about a track on the current CD.
+ */
+void
+stash_trkinfo( int track, char *songname, int contd, int avoid )
+{
+	if (cd != NULL)
+	{
+		track--;
+		if (!!cd->trk[track].contd != !!contd)
+			info_modified = 1;
+		cd->trk[track].contd = track ? contd : 0;
+
+		if (!!cd->trk[track].avoid != !!avoid)
+			info_modified = 1;
+		cd->trk[track].avoid = avoid;
+
+		if ((cd->trk[track].songname == NULL && songname[0]) ||
+				(cd->trk[track].songname != NULL &&
+				strcmp(cd->trk[track].songname, songname)))
+		{
+			info_modified = 1;
+			wm_strmcpy(&cd->trk[track].songname, songname);
+		}
+	}
+}
+
+/*
+ * new_playlist()
+ *
+ * Add a playlist to a CD.
+ */
+struct wm_playlist *
+new_playlist(struct wm_cdinfo* cdinfo, char* listname)
+{
+	int	nlists = 0;
+	struct wm_playlist *l;
+
+	if (cdinfo->lists != NULL)
+	{
+		for (nlists = 0; cdinfo->lists[nlists].name != NULL; nlists++)
+			;
+		l = (struct wm_playlist *)realloc(cdinfo->lists, (nlists + 2) *
+			sizeof (struct wm_playlist));
+	}
+	else
+		l = (struct wm_playlist *)malloc(2 * sizeof (struct wm_playlist));
+
+	if (l == NULL)
+		return (NULL);
+
+	l[nlists + 1].name = NULL;
+	l[nlists].name = NULL;		/* so wm_strmcpy doesn't free() it */
+	wm_strmcpy(&l[nlists].name, listname);
+	l[nlists].list = NULL;
+	cdinfo->lists = l;
+
+	return (&l[nlists]);
+}
+
+/*
+ * make_playlist()
+ *
+ * Construct a playlist for the current CD.  If we're in shuffle mode, play
+ * each non-avoided track once, keeping continued tracks in the right order.
+ *
+ * If playmode is 2, use playlist number (playmode-2).  XXX should do
+ * bounds checking on this, probably.
+ *
+ * If consecutive tracks are being played, only make one playlist entry for
+ * them, so the CD player won't pause between tracks while we wake up.
+ */
+void
+make_playlist( int playmode, int starttrack )
+{
+	int	i, avoiding = 1, entry = 0, count, track,
+		*thislist;
+
+	cur_listno = 0;
+	if (playlist != NULL)
+		free(playlist);
+	playlist = malloc(sizeof (*playlist) * (cur_ntracks + 1));
+	if (playlist == NULL)
+	{
+		perror("playlist");
+		exit(1);
+	}
+
+	/* If this is a data-only CD, we can't play it. */
+	if ((starttrack && cd->trk[starttrack - 1].data) ||
+		(cur_ntracks == 1 && cd->trk[0].data))
+	{
+		playlist[0].start = 0;
+		playlist[0].end = 0;
+		playlist[1].start = 0;
+		return;
+	}
+
+	if (playmode == 1)
+	{
+		char *done = malloc(cur_ntracks);
+
+		if (done == NULL)
+		{
+			perror("randomizer");
+			exit(1);
+		}
+
+		count = cur_ntracks;
+		if (starttrack && cd->trk[starttrack - 1].avoid)
+			count++;
+		for (i = 0; i < cur_ntracks; i++)
+			if (cd->trk[i].contd || cd->trk[i].avoid ||
+				cd->trk[i].data)
+			{
+				done[i] = 1;
+				count--;
+			}
+			else
+				done[i] = 0;
+
+		for (i = 0; i < count; i++)
+		{
+			int end;	/* for readability */
+			if (starttrack)
+			{
+				track = starttrack - 1;
+				starttrack = 0;
+			}
+			else
+				while (done[track = rand() % cur_ntracks])
+					;
+
+			playlist[i].start = track + 1;
+
+			/* play all subsequent continuation tracks too */
+			for (end = track + 1; end < cur_ntracks + 1; end++)
+				if (! cd->trk[end].contd ||
+						cd->trk[end].avoid ||
+						cd->trk[end].data)
+					break;
+			playlist[i].end = end + 1;
+
+			done[track]++;
+		}
+		playlist[i].start = 0;
+
+		free(done);
+	}
+	else if (playmode >= 2 && cd->lists && cd->lists[playmode - 2].name)
+	{
+		count = 2;	/* one terminating entry, and one for start */
+		thislist = cd->lists[playmode - 2].list;
+
+		for (i = 0; thislist[i]; i++)
+			if (thislist[i + 1] != thislist[i] + 1)
+				count++;
+
+		if (playlist != NULL)
+			free(playlist);
+		playlist = malloc(sizeof (*playlist) * count);
+		if (playlist == NULL)
+		{
+			perror("playlist");
+			exit(1);
+		}
+
+		count = 0;
+		if (starttrack)
+		{
+			playlist[0].start = starttrack;
+			for (track = 0; thislist[track]; track++)
+				if (starttrack == thislist[track])
+					break;
+			if (! thislist[track])
+			{
+				playlist[0].end = starttrack + 1;
+				playlist[1].start = thislist[0];
+				count = 1;
+				track = 0;
+			}
+		}
+		else
+		{
+			playlist[0].start = thislist[0];
+			track = 0;
+		}
+
+		for (i = track; thislist[i]; i++)
+			if (thislist[i + 1] != thislist[i] + 1)
+			{
+				playlist[count].end = thislist[i] + 1;
+				count++;
+				playlist[count].start = thislist[i + 1];
+			}
+	}
+	else
+	{
+		for (i = starttrack ? starttrack - 1 : 0; i < cur_ntracks; i++)
+			if (avoiding && ! (cd->trk[i].avoid || cd->trk[i].data))
+			{
+				playlist[entry].start = i + 1;
+				avoiding = 0;
+			}
+			else if (! avoiding && (cd->trk[i].avoid ||
+						cd->trk[i].data))
+			{
+				playlist[entry].end = i + 1;
+				avoiding = 1;
+				entry++;
+			}
+		if (! avoiding)
+			playlist[entry].end = i + 1;
+		playlist[entry + !avoiding].start = 0;
+	}
+
+	/*
+	 * Now go through the list, whatever its source, and figure out
+	 * cumulative starting times for each entry.
+	 */
+	entry = count = 0;
+	do {
+		playlist[entry].starttime = count;
+
+		if (playlist[entry].start)
+			for (i = playlist[entry].start; i <
+						playlist[entry].end; i++)
+				count += cd->trk[i - 1].length;
+	} while (playlist[entry++].start);
+}
+
+/*
+ * Find a particular track's location in the current playlist.  Sets the
+ * appropriate variables (cur_listno, cur_firsttrack, cur_lasttrack).
+ */
+void
+pl_find_track( int track )
+{
+	int	i;
+
+	if (playlist == NULL)
+	{
+#ifndef NDEBUG
+		fprintf(stderr, "Null playlist!  Huh?\n");
+#endif
+		return;
+	}
+
+	for (i = 0; playlist[i].start; i++)
+		if (track >= playlist[i].start && track < playlist[i].end)
+		{
+			cur_listno = i + 1;
+			cur_firsttrack = playlist[i].start;
+			cur_lasttrack = playlist[i].end - 1;
+			return;
+		}
+	
+	/*
+	 * Couldn't find the track in question.  Make a special entry with
+	 * just that track.
+	 */
+	if (! playlist[i].start)
+	{
+		playlist = realloc(playlist, (i + 2) * sizeof(*playlist));
+		if (playlist == NULL)
+		{
+			perror("playlist realloc");
+			exit(1);
+		}
+
+		playlist[i + 1].start = playlist[i + 1].end = 0;
+		playlist[i + 1].starttime = playlist[i].starttime +
+			cd->trk[track - 1].length;
+		playlist[i].start = track;
+		playlist[i].end = track + 1;
+		cur_listno = i + 1;
+		cur_firsttrack = track;
+		cur_lasttrack = track;
+	}
+}