2 * This file is part of DisOrder.
3 * Copyright (C) 2004-2009 Richard Kettlewell
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 /** @file server/play.c
19 * @brief Playing tracks
22 #include "disorder-server.h"
25 #define SPEAKER "disorder-speaker"
27 /** @brief The current playing track or NULL */
28 struct queue_entry
*playing
;
30 /** @brief Set when paused */
33 static void finished(ev_source
*ev
);
35 /** @brief File descriptor of our end of the socket to the speaker */
36 static int speaker_fd
= -1;
38 /** @brief Mapping of track IDs to associated decoder process IDs */
39 static hash
*player_pids
;
41 /** @brief Set when shutting down */
42 static int shutting_down
;
44 /** @brief Remember a player's PID */
45 static void store_player_pid(const char *id
, pid_t pid
) {
46 if(!player_pids
) player_pids
= hash_new(sizeof (pid_t
));
47 hash_add(player_pids
, id
, &pid
, HASH_INSERT_OR_REPLACE
);
50 /** @brief Find a player's PID */
51 static pid_t
find_player_pid(const char *id
) {
54 if(player_pids
&& (pidp
= hash_find(player_pids
, id
))) return *pidp
;
58 /** @brief Discard a player's ID->PID mappin
60 * Used when the player terminates.
62 static void forget_player_pid(const char *id
) {
63 if(player_pids
) hash_remove(player_pids
, id
);
66 /** @brief Called when speaker process terminates
68 * Currently kills of DisOrder completely. A future version could terminate
69 * the speaker when nothing was going on, or recover from failures, though any
70 * tracks with decoders already started would need to have them restarted.
72 static int speaker_terminated(ev_source
attribute((unused
)) *ev
,
73 pid_t
attribute((unused
)) pid
,
74 int attribute((unused
)) status
,
75 const struct rusage
attribute((unused
)) *rusage
,
76 void attribute((unused
)) *u
) {
77 fatal(0, "speaker subprocess %s",
81 /** @brief Called when we get a message from the speaker process */
82 static int speaker_readable(ev_source
*ev
, int fd
,
83 void attribute((unused
)) *u
) {
84 struct speaker_message sm
;
85 int ret
= speaker_recv(fd
, &sm
);
87 if(ret
< 0) return 0; /* EAGAIN */
89 ev_fd_cancel(ev
, ev_read
, fd
);
94 /* track ID is paused, DATA seconds played */
95 D(("SM_PAUSED %s %ld", sm
.id
, sm
.data
));
96 playing
->sofar
= sm
.data
;
98 case SM_FINISHED
: /* scratched the playing track */
99 case SM_STILLBORN
: /* scratched too early */
100 case SM_UNKNOWN
: /* scratched WAY too early */
101 if(playing
&& !strcmp(sm
.id
, playing
->id
))
105 /* track ID is playing, DATA seconds played */
106 D(("SM_PLAYING %s %ld", sm
.id
, sm
.data
));
107 playing
->sofar
= sm
.data
;
110 error(0, "unknown speaker message type %d", sm
.type
);
115 /** @brief Initialize the speaker process */
116 void speaker_setup(ev_source
*ev
) {
119 struct speaker_message sm
;
121 if(socketpair(PF_UNIX
, SOCK_DGRAM
, 0, sp
) < 0)
122 fatal(errno
, "error calling socketpair");
123 if(!(pid
= xfork())) {
125 ev_signal_atfork(ev
);
130 signal(SIGPIPE
, SIG_DFL
);
132 execlp("valgrind", "valgrind", SPEAKER
, "--config", configfile
,
133 debugging ?
"--debug" : "--no-debug",
134 log_default
== &log_syslog ?
"--syslog" : "--no-syslog",
137 execlp(SPEAKER
, SPEAKER
, "--config", configfile
,
138 debugging ?
"--debug" : "--no-debug",
139 log_default
== &log_syslog ?
"--syslog" : "--no-syslog",
142 fatal(errno
, "error invoking %s", SPEAKER
);
144 ev_child(ev
, pid
, 0, speaker_terminated
, 0);
148 /* Wait for the speaker to be ready */
149 speaker_recv(speaker_fd
, &sm
);
150 nonblock(speaker_fd
);
151 if(ev_fd(ev
, ev_read
, speaker_fd
, speaker_readable
, 0, "speaker read") < 0)
152 fatal(0, "error registering speaker socket fd");
155 /** @brief Tell the speaker to reload its configuration */
156 void speaker_reload(void) {
157 struct speaker_message sm
;
159 memset(&sm
, 0, sizeof sm
);
161 speaker_send(speaker_fd
, &sm
);
164 /** @brief Called when the currently playing track finishes playing
165 * @param ev Event loop or NULL
167 * There are three places this is called from:
169 * 1) speaker_readable(), when the speaker tells us the playing track finished.
170 * (Technically the speaker lies a little to arrange for gapless play.)
172 * 2) player_finished(), when the player for a non-raw track (i.e. one that
173 * does not use the speaker) finishes.
175 * 3) quitting(), after signalling the decoder or player but possible before it
176 * has actually terminated. In this case @p ev is NULL, inhibiting any further
177 * attempt to play anything.
179 static void finished(ev_source
*ev
) {
180 D(("finished playing=%p", (void *)playing
));
183 if(playing
->state
!= playing_scratched
)
184 notify_not_scratched(playing
->track
, playing
->submitter
);
185 switch(playing
->state
) {
187 eventlog("completed", playing
->track
, (char *)0);
189 case playing_scratched
:
190 eventlog("scratched", playing
->track
, playing
->scratched
, (char *)0);
193 eventlog("failed", playing
->track
, wstat(playing
->wstat
), (char *)0);
198 queue_played(playing
);
200 forget_player_pid(playing
->id
);
202 /* Try to play something else */
203 /* TODO re-support config->gap? */
208 /** @brief Called when a player or decoder process terminates
210 * This is called when a decoder process terminates (which might actually be
211 * some time before the speaker reports it as finished) or when a non-raw
212 * (i.e. non-speaker) player terminates. In the latter case it's imaginable
213 * that the OS has buffered the last few samples.
216 static int player_finished(ev_source
*ev
,
219 const struct rusage
attribute((unused
)) *rusage
,
221 struct queue_entry
*q
= u
;
223 D(("player_finished pid=%lu status=%#x",
224 (unsigned long)pid
, (unsigned)status
));
225 /* Record that this PID is dead. If we killed the track we might know this
226 * already, but also it might have exited or crashed. Either way we don't
227 * want to end up signalling it. */
228 if(pid
== find_player_pid(q
->id
))
229 forget_player_pid(q
->id
);
231 case playing_unplayed
:
233 /* If this was a pre-prepared track then either it failed or we
234 * deliberately stopped it: it might have been removed from the queue, or
235 * moved down the queue, or the speaker might be on a break. So we leave
236 * it state alone for future use.
240 /* We actually started playing this track. */
242 /* Don't override 'scratched' with 'failed'. */
243 if(q
->state
!= playing_scratched
)
244 q
->state
= playing_failed
;
246 q
->state
= playing_ok
;
249 /* Regardless we always report and record the status and do cleanup for
252 error(0, "player for %s %s", q
->track
, wstat(status
));
253 if(q
->type
& DISORDER_PLAYER_PREFORK
)
254 play_cleanup(q
->pl
, q
->data
);
256 /* If this actually was the current track, and does not use the speaker
257 * process, then it must have finished. For raw-output players we will get a
258 * separate notification from the speaker process. */
260 && (q
->type
& DISORDER_PLAYER_TYPEMASK
) != DISORDER_PLAYER_RAW
)
265 /** @brief Find the player for @p q */
266 static int find_player(const struct queue_entry
*q
) {
269 for(n
= 0; n
< config
->player
.n
; ++n
)
270 if(fnmatch(config
->player
.s
[n
].s
[0], q
->track
, 0) == 0)
272 if(n
>= config
->player
.n
)
278 /* Return values from start() */
279 #define START_OK 0 /**< @brief Succeeded. */
280 #define START_HARDFAIL 1 /**< @brief Track is broken. */
281 #define START_SOFTFAIL 2 /**< @brief Track OK, system (temporarily?) broken */
283 /** @brief Play or prepare @p q
284 * @param ev Event loop
285 * @param q Track to play/prepare
286 * @param prepare_only If true, only prepares track
287 * @return @ref START_OK, @ref START_HARDFAIL or @ref START_SOFTFAIL
289 * TODO: probably ought to be split up into separate prepare() and start()
290 * operations, the latter calling the former if necessary and perhaps the two
291 * sharing some subprocess creation logic.
293 * "Preparing" a track means starting a background decoder and connecting it to
294 * the speaker process. Obviously this only applies to raw-format
295 * (i.e. speaker-using) players.
297 static int start(ev_source
*ev
,
298 struct queue_entry
*q
,
303 struct speaker_message sm
;
306 ao_sample_format format
;
310 const char *waitdevice
= 0;
311 const char *const *optv
;
313 struct sockaddr_un addr
;
316 memset(&sm
, 0, sizeof sm
);
317 D(("start %s %d", q
->id
, prepare_only
));
319 /* The track is already prepared */
321 /* We want to run it, since it's prepared the answer is to tell the
322 * speaker to set it off */
323 strcpy(sm
.id
, q
->id
);
325 speaker_send(speaker_fd
, &sm
);
326 D(("sent SM_PLAY for %s", sm
.id
));
330 /* Find the player plugin. */
331 if((n
= find_player(q
)) < 0) return START_HARDFAIL
;
332 if(!(q
->pl
= open_plugin(config
->player
.s
[n
].s
[1], 0)))
333 return START_HARDFAIL
;
334 q
->type
= play_get_type(q
->pl
);
335 /* Can't prepare non-raw tracks. */
337 && (q
->type
& DISORDER_PLAYER_TYPEMASK
) != DISORDER_PLAYER_RAW
)
339 /* Call the prefork function in the player module. None of the built-in
340 * modules use this so it's not well tested, unfortunately. */
341 p
= trackdb_rawpath(q
->track
);
342 if(q
->type
& DISORDER_PLAYER_PREFORK
)
343 if(!(q
->data
= play_prefork(q
->pl
, p
))) {
344 error(0, "prefork function for %s failed", q
->track
);
345 return START_HARDFAIL
;
347 /* Capture the player/decoder's stderr and feed it into our logs.
349 * Use the second arg as the tag if available (it's probably a command name),
350 * otherwise the module name. */
352 lfd
= logfd(ev
, (config
->player
.s
[n
].s
[2]
353 ? config
->player
.s
[n
].s
[2] : config
->player
.s
[n
].s
[1]));
356 /* Parse player arguments */
357 optc
= config
->player
.s
[n
].n
- 2;
358 optv
= (void *)&config
->player
.s
[n
].s
[2];
359 while(optc
> 0 && optv
[0][0] == '-') {
360 if(!strcmp(optv
[0], "--")) {
365 if(!strcmp(optv
[0], "--wait-for-device")
366 || !strncmp(optv
[0], "--wait-for-device=", 18)) {
367 if((waitdevice
= strchr(optv
[0], '='))) {
370 waitdevice
= ""; /* use default */
374 error(0, "unknown option %s", optv
[0]);
375 return START_HARDFAIL
;
378 /* Create the subprocess */
379 switch(pid
= fork()) {
381 /* Child of disorderd */
383 progname
= "disorderd-fork";
384 ev_signal_atfork(ev
);
385 signal(SIGPIPE
, SIG_DFL
);
386 /* Send our log output to DisOrder's logs */
390 xclose(lfd
); /* tidy up */
392 /* Create a new process group, ID = child PID */
394 if((q
->type
& DISORDER_PLAYER_TYPEMASK
) == DISORDER_PLAYER_RAW
) {
395 /* "Raw" format players always have their output send down a pipe
396 * to the disorder-normalize process. This will connect to the
397 * speaker process to actually play the audio data.
399 /* np will be the pipe to disorder-normalize */
400 if(socketpair(PF_UNIX
, SOCK_STREAM
, 0, np
) < 0)
401 fatal(errno
, "error calling socketpair");
402 /* Beware of the Leopard! On OS X 10.5.x, the order of the shutdown
403 * calls here DOES MATTER. If you do the SHUT_WR first then the SHUT_RD
404 * fails with "Socket is not connected". I think this is a bug but
405 * provided implementors either don't care about the order or all agree
406 * about the order, choosing the reliable order is an adequate
408 xshutdown(np
[1], SHUT_RD
); /* decoder writes to np[1] */
409 xshutdown(np
[0], SHUT_WR
); /* normalize reads from np[0] */
412 /* Start disorder-normalize. We double-fork so that nothing has to wait
413 * for disorder-normalize. */
414 if(!(npid
= xfork())) {
415 /* Grandchild of disorderd */
417 /* Great-grandchild of disorderd */
418 /* Connect to the speaker process */
419 memset(&addr
, 0, sizeof addr
);
420 addr
.sun_family
= AF_UNIX
;
421 snprintf(addr
.sun_path
, sizeof addr
.sun_path
,
422 "%s/speaker/socket", config
->home
);
423 sfd
= xsocket(PF_UNIX
, SOCK_STREAM
, 0);
424 if(connect(sfd
, (const struct sockaddr
*)&addr
, sizeof addr
) < 0)
425 fatal(errno
, "connecting to %s", addr
.sun_path
);
426 /* Send the ID, with a NATIVE-ENDIAN 32 bit length */
428 if(write(sfd
, &l
, sizeof l
) < 0
429 || write(sfd
, q
->id
, l
) < 0)
430 fatal(errno
, "writing to %s", addr
.sun_path
);
432 if (read(sfd
, &l
, 1) < 0)
433 fatal(errno
, "reading ack from %s", addr
.sun_path
);
440 /* Ask the speaker to actually start playing the track; we do it here
441 * so it's definitely after ack.
443 * This is actually insufficient. If the track is prepared and then
444 * very shortly afterwards played, then the race we're trying to
445 * avoid here will still exist. So either the speaker must cope with
446 * SM_PLAY before connection has arrived (in which case we might as
447 * well move the SM_PLAY somewhere saner) or we must do more work
448 * here to avoid the race.
450 * In fact the current speaker can indeed cope with SM_PLAY before
451 * the connection arrives. So this code can probably be moved
452 * somewhere saner in due course. TODO!
455 strcpy(sm
.id
, q
->id
);
457 speaker_send(speaker_fd
, &sm
);
458 D(("sent SM_PLAY for %s", sm
.id
));
460 /* TODO stderr shouldn't be redirected for disorder-normalize
461 * (but it should be for play_track() */
462 execlp("disorder-normalize", "disorder-normalize",
463 log_default
== &log_syslog ?
"--syslog" : "--no-syslog",
464 "--config", configfile
,
466 fatal(errno
, "executing disorder-normalize");
467 /* End of the great-grandchild of disorderd */
469 /* Back in the grandchild of disorderd */
471 /* End of the grandchild of disorderd */
473 /* Back in the child of disorderd */
474 /* Wait for the grandchild of disordered to finish */
475 while(waitpid(npid
, &n
, 0) < 0 && errno
== EINTR
)
477 /* Pass the file descriptor to the driver in an environment
479 snprintf(buffer
, sizeof buffer
, "DISORDER_RAW_FD=%d", np
[1]);
480 if(putenv(buffer
) < 0)
481 fatal(errno
, "error calling putenv");
482 /* Close all the FDs we don't need */
485 /* Wait for a device to clear. This ugliness is now deprecated and will
486 * eventually be removed. */
490 n
= ao_driver_id(waitdevice
);
492 fatal(0, "invalid libao driver: %s", optv
[0]);
494 n
= ao_default_driver_id();
495 /* Make up a format. */
496 memset(&format
, 0, sizeof format
);
500 format
.byte_format
= AO_FMT_NATIVE
;
503 ts
.tv_nsec
= 100000000; /* 0.1s */
504 while((device
= ao_open_live(n
, &format
, 0)) == 0 && retries
-- > 0)
513 /* End of child of disorderd */
516 /* Back in disorderd (child could not be created) */
517 error(errno
, "error calling fork");
518 if(q
->type
& DISORDER_PLAYER_PREFORK
)
519 play_cleanup(q
->pl
, q
->data
); /* else would leak */
522 return START_SOFTFAIL
;
524 /* Back in disorderd (child was created) */
525 /* Remmber the PID */
526 store_player_pid(q
->id
, pid
);
527 /* This track is prepared. (Non-raw tracks are by implication prepared as
528 * soon as they are playing, but really the question doesn't make much sense
533 /* Set the child's process group ID.
535 * But wait, didn't we already set it in the child? Yes, but it's possible
536 * that we'll need to address it by process group ID before it gets that far,
537 * so we set it here too. One or the other may fail but as long as one
538 * succeeds that's fine.
541 /* Ask the event loop to tell us when the child terminates */
542 ev_child(ev
, pid
, 0, player_finished
, q
);
543 D(("player subprocess ID %lu", (unsigned long)pid
));
547 /** @brief Prepare a track for later play
549 * Only applies to raw-format (speaker-using) players.
551 int prepare(ev_source
*ev
,
552 struct queue_entry
*q
) {
555 /* Find the player plugin */
556 if(find_player_pid(q
->id
) > 0) return 0; /* Already going. */
557 if((n
= find_player(q
)) < 0) return -1; /* No player */
558 q
->pl
= open_plugin(config
->player
.s
[n
].s
[1], 0); /* No player */
559 q
->type
= play_get_type(q
->pl
);
560 if((q
->type
& DISORDER_PLAYER_TYPEMASK
) != DISORDER_PLAYER_RAW
)
561 return 0; /* Not a raw player */
562 return start(ev
, q
, 1/*prepare_only*/); /* Prepare it */
565 /** @brief Abandon a queue entry
567 * Called from c_remove() (but NOT when scratching a track). Only does
568 * anything to raw-format tracks. Terminates the background decoder and tells
569 * the speaker process to cancel the track.
571 void abandon(ev_source
attribute((unused
)) *ev
,
572 struct queue_entry
*q
) {
573 struct speaker_message sm
;
574 pid_t pid
= find_player_pid(q
->id
);
576 if(pid
< 0) return; /* Not prepared. */
577 if((q
->type
& DISORDER_PLAYER_TYPEMASK
) != DISORDER_PLAYER_RAW
)
578 return; /* Not a raw player. */
579 /* Terminate the player. */
580 kill(-pid
, config
->signal
);
581 forget_player_pid(q
->id
);
582 /* Cancel the track. */
583 memset(&sm
, 0, sizeof sm
);
585 strcpy(sm
.id
, q
->id
);
586 speaker_send(speaker_fd
, &sm
);
589 /** @brief Called with a new random track
590 * @param ev Event loop
591 * @param track Track name
593 static void chosen_random_track(ev_source
*ev
,
595 struct queue_entry
*q
;
599 /* Add the track to the queue */
600 q
= queue_add(track
, 0, WHERE_END
, origin_random
);
601 D(("picked %p (%s) at random", (void *)q
, q
->track
));
603 /* Maybe a track can now be played */
607 /** @brief Maybe add a randomly chosen track
608 * @param ev Event loop
610 * Picking can take some time so the track will only be added after this
611 * function has returned.
613 void add_random_track(ev_source
*ev
) {
614 struct queue_entry
*q
;
617 /* If random play is not enabled then do nothing. */
618 if(shutting_down
|| !random_is_enabled())
620 /* Count how big the queue is */
621 for(q
= qhead
.next
; q
!= &qhead
; q
= q
->next
)
623 /* If it's smaller than the desired size then add a track */
624 if(qlen
< config
->queue_pad
)
625 trackdb_request_random(ev
, chosen_random_track
);
628 /** @brief Attempt to play something
630 * This is called from numerous locations - whenever it might conceivably have
631 * become possible to play something.
633 void play(ev_source
*ev
) {
634 struct queue_entry
*q
;
635 int random_enabled
= random_is_enabled();
637 D(("play playing=%p", (void *)playing
));
638 /* If we're shutting down, or there's something playing, or playing is not
639 * enabled, give up now */
640 if(shutting_down
|| playing
|| !playing_is_enabled()) return;
641 /* See if there's anything to play */
642 if(qhead
.next
== &qhead
) {
643 /* Queue is empty. We could just wait around since there are periodic
644 * attempts to add a random track anyway. However they are rarer than
645 * attempts to force a track so we initiate one now. */
646 add_random_track(ev
);
647 /* chosen_random_track() will call play() when a new random track has been
648 * added to the queue. */
651 /* There must be at least one track in the queue. */
653 /* If random play is disabled but the track is a non-adopted random one
654 * then don't play it. play() will be called again when random play is
656 if(!random_enabled
&& q
->origin
== origin_random
)
658 D(("taken %p (%s) from queue", (void *)q
, q
->track
));
659 /* Try to start playing. */
660 switch(start(ev
, q
, 0/*!prepare_only*/)) {
662 if(q
== qhead
.next
) {
663 queue_remove(q
, 0); /* Abandon this track. */
667 /* Oh well, try the next one */
671 /* We'll try the same track again shortly. */
674 /* Remove from the queue */
675 if(q
== qhead
.next
) {
679 /* It's become the playing track */
681 time(&playing
->played
);
682 playing
->state
= playing_started
;
683 notify_play(playing
->track
, playing
->submitter
);
684 eventlog("playing", playing
->track
,
685 playing
->submitter ? playing
->submitter
: (const char *)0,
687 /* Maybe add a random track. */
688 add_random_track(ev
);
689 /* If there is another track in the queue prepare it now. This could
690 * potentially be a just-added random track. */
691 if(qhead
.next
!= &qhead
)
692 prepare(ev
, qhead
.next
);
697 /** @brief Return true if play is enabled */
698 int playing_is_enabled(void) {
699 const char *s
= trackdb_get_global("playing");
701 return !s
|| !strcmp(s
, "yes");
704 /** @brief Enable play */
705 void enable_playing(const char *who
, ev_source
*ev
) {
706 trackdb_set_global("playing", "yes", who
);
707 /* Add a random track if necessary. */
708 add_random_track(ev
);
712 /** @brief Disable play */
713 void disable_playing(const char *who
) {
714 trackdb_set_global("playing", "no", who
);
717 /** @brief Return true if random play is enabled */
718 int random_is_enabled(void) {
719 const char *s
= trackdb_get_global("random-play");
721 return !s
|| !strcmp(s
, "yes");
724 /** @brief Enable random play */
725 void enable_random(const char *who
, ev_source
*ev
) {
726 trackdb_set_global("random-play", "yes", who
);
727 add_random_track(ev
);
731 /** @brief Disable random play */
732 void disable_random(const char *who
) {
733 trackdb_set_global("random-play", "no", who
);
736 /** @brief Scratch a track
737 * @param User responsible (or NULL)
738 * @param Track ID (or NULL for current)
740 void scratch(const char *who
, const char *id
) {
741 struct queue_entry
*q
;
742 struct speaker_message sm
;
745 D(("scratch playing=%p state=%d id=%s playing->id=%s",
747 playing ? playing
->state
: 0,
749 playing ? playing
->id
: "(none)"));
750 /* There must be a playing track; it must be in a scratchable state; if a
751 * specific ID was mentioned it must be that track. */
753 && (playing
->state
== playing_started
754 || playing
->state
== playing_paused
)
756 || !strcmp(id
, playing
->id
))) {
757 /* Update state (for the benefit of the 'recent' list) */
758 playing
->state
= playing_scratched
;
759 playing
->scratched
= who ?
xstrdup(who
) : 0;
760 /* Find the player and kill the whole process group */
761 if((pid
= find_player_pid(playing
->id
)) > 0) {
762 D(("kill -%d -%lu", config
->signal
, (unsigned long)pid
));
763 kill(-pid
, config
->signal
);
764 forget_player_pid(playing
->id
);
766 /* TODO if the background decoder finished and the speaker is working
767 * through buffered data this will produce a bogus log message. */
768 error(0, "could not find PID for %s", playing
->id
);
770 /* Tell the speaker, if we think it'll care */
771 if((playing
->type
& DISORDER_PLAYER_TYPEMASK
) == DISORDER_PLAYER_RAW
) {
772 memset(&sm
, 0, sizeof sm
);
774 strcpy(sm
.id
, playing
->id
);
775 speaker_send(speaker_fd
, &sm
);
776 D(("sending SM_CANCEL for %s", playing
->id
));
778 /* put a scratch track onto the front of the queue (but don't
779 * bother if playing is disabled) */
780 if(playing_is_enabled() && config
->scratch
.n
) {
781 int r
= rand() * (double)config
->scratch
.n
/ (RAND_MAX
+ 1.0);
782 q
= queue_add(config
->scratch
.s
[r
], who
, WHERE_START
, origin_scratch
);
784 notify_scratch(playing
->track
, playing
->submitter
, who
,
785 time(0) - playing
->played
);
789 /** @brief Called from quit() to tear down eveyrthing belonging to this file */
790 void quitting(ev_source
*ev
) {
791 struct queue_entry
*q
;
794 /* Don't start anything new */
796 /* Shut down the current player */
798 if((pid
= find_player_pid(playing
->id
)) > 0) {
799 kill(-pid
, config
->signal
);
800 forget_player_pid(playing
->id
);
802 /* TODO if the background decoder finished and the speaker is working
803 * through buffered data this will produce a bogus log message. */
804 error(0, "could not find PID for %s", playing
->id
);
806 playing
->state
= playing_quitting
;
809 /* Zap any other players */
810 for(q
= qhead
.next
; q
!= &qhead
; q
= q
->next
)
811 if((pid
= find_player_pid(q
->id
)) > 0) {
812 D(("kill -%d %lu", config
->signal
, (unsigned long)pid
));
813 kill(-pid
, config
->signal
);
814 forget_player_pid(q
->id
);
816 /* TODO if we never started a background decoder then this will produce a
817 * very bogus log message (see issue 32) */
818 error(0, "could not find PID for %s", q
->id
);
820 /* Don't need the speaker any more */
821 ev_fd_cancel(ev
, ev_read
, speaker_fd
);
825 /** @brief Pause the playing track */
826 int pause_playing(const char *who
) {
827 struct speaker_message sm
;
830 /* Can't pause if already paused or if nothing playing. */
831 if(!playing
|| paused
) return 0;
832 switch(playing
->type
& DISORDER_PLAYER_TYPEMASK
) {
833 case DISORDER_PLAYER_STANDALONE
:
834 if(!(playing
->type
& DISORDER_PLAYER_PAUSES
)) {
836 error(0, "cannot pause because player is not powerful enough");
839 if(play_pause(playing
->pl
, &played
, playing
->data
)) {
840 error(0, "player indicates it cannot pause");
843 time(&playing
->lastpaused
);
844 playing
->uptopause
= played
;
845 playing
->lastresumed
= 0;
847 case DISORDER_PLAYER_RAW
:
848 memset(&sm
, 0, sizeof sm
);
850 speaker_send(speaker_fd
, &sm
);
853 if(who
) info("paused by %s", who
);
854 notify_pause(playing
->track
, who
);
856 if(playing
->state
== playing_started
)
857 playing
->state
= playing_paused
;
858 eventlog("state", "pause", (char *)0);
862 /** @brief Resume playing after a pause */
863 void resume_playing(const char *who
) {
864 struct speaker_message sm
;
869 switch(playing
->type
& DISORDER_PLAYER_TYPEMASK
) {
870 case DISORDER_PLAYER_STANDALONE
:
871 if(!playing
->type
& DISORDER_PLAYER_PAUSES
) {
873 /* Shouldn't happen */
876 play_resume(playing
->pl
, playing
->data
);
877 time(&playing
->lastresumed
);
879 case DISORDER_PLAYER_RAW
:
880 memset(&sm
, 0, sizeof sm
);
882 speaker_send(speaker_fd
, &sm
);
885 if(who
) info("resumed by %s", who
);
886 notify_resume(playing
->track
, who
);
887 if(playing
->state
== playing_paused
)
888 playing
->state
= playing_started
;
889 eventlog("state", "resume", (char *)0);