chiark / gitweb /
more conservative about read() result
[disorder] / server / play.c
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460b9539 1/*
2 * This file is part of DisOrder.
6d2d327c 3 * Copyright (C) 2004, 2005, 2006, 2007 Richard Kettlewell
460b9539 4 *
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 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
18 * USA
19 */
20
21#include <config.h>
6d2d327c 22#include "types.h"
460b9539 23
24#include <sys/types.h>
25#include <sys/time.h>
26#include <unistd.h>
27#include <errno.h>
28#include <fnmatch.h>
29#include <time.h>
30#include <signal.h>
31#include <stdlib.h>
32#include <assert.h>
33#include <sys/socket.h>
34#include <string.h>
35#include <stdio.h>
36#include <pcre.h>
37#include <ao/ao.h>
6d2d327c 38#include <sys/wait.h>
84aa9f93 39#include <sys/un.h>
460b9539 40
41#include "event.h"
42#include "log.h"
43#include "mem.h"
44#include "configuration.h"
45#include "queue.h"
46#include "trackdb.h"
47#include "play.h"
48#include "plugin.h"
49#include "wstat.h"
50#include "eventlog.h"
51#include "logfd.h"
52#include "syscalls.h"
ea410ba1 53#include "speaker-protocol.h"
460b9539 54#include "disorder.h"
55#include "signame.h"
56#include "hash.h"
57
58#define SPEAKER "disorder-speaker"
59
60struct queue_entry *playing;
61int paused;
62
63static void finished(ev_source *ev);
64
65static int speaker_fd = -1;
66static hash *player_pids;
67static int shutting_down;
68
69static void store_player_pid(const char *id, pid_t pid) {
70 if(!player_pids) player_pids = hash_new(sizeof (pid_t));
71 hash_add(player_pids, id, &pid, HASH_INSERT_OR_REPLACE);
72}
73
74static pid_t find_player_pid(const char *id) {
75 pid_t *pidp;
76
77 if(player_pids && (pidp = hash_find(player_pids, id))) return *pidp;
78 return -1;
79}
80
81static void forget_player_pid(const char *id) {
82 if(player_pids) hash_remove(player_pids, id);
83}
84
85/* called when speaker process terminates */
86static int speaker_terminated(ev_source attribute((unused)) *ev,
87 pid_t attribute((unused)) pid,
88 int attribute((unused)) status,
89 const struct rusage attribute((unused)) *rusage,
90 void attribute((unused)) *u) {
0213d16c 91 fatal(0, "speaker subprocess %s",
2a6c7b79 92 wstat(status));
460b9539 93}
94
95/* called when speaker process has something to say */
96static int speaker_readable(ev_source *ev, int fd,
97 void attribute((unused)) *u) {
98 struct speaker_message sm;
84aa9f93 99 int ret = speaker_recv(fd, &sm);
460b9539 100
101 if(ret < 0) return 0; /* EAGAIN */
102 if(!ret) { /* EOF */
103 ev_fd_cancel(ev, ev_read, fd);
104 return 0;
105 }
106 switch(sm.type) {
107 case SM_PAUSED:
108 /* track ID is paused, DATA seconds played */
109 D(("SM_PAUSED %s %ld", sm.id, sm.data));
110 playing->sofar = sm.data;
111 break;
112 case SM_FINISHED:
113 /* the playing track finished */
114 D(("SM_FINISHED %s", sm.id));
115 finished(ev);
116 break;
117 case SM_PLAYING:
118 /* track ID is playing, DATA seconds played */
119 D(("SM_PLAYING %s %ld", sm.id, sm.data));
120 playing->sofar = sm.data;
121 break;
122 default:
123 error(0, "unknown message type %d", sm.type);
124 }
125 return 0;
126}
127
128void speaker_setup(ev_source *ev) {
129 int sp[2], lfd;
130 pid_t pid;
131
132 if(socketpair(PF_UNIX, SOCK_DGRAM, 0, sp) < 0)
133 fatal(errno, "error calling socketpair");
134 if(!isatty(2))
135 lfd = logfd(ev, SPEAKER);
136 else
137 lfd = -1;
138 if(!(pid = xfork())) {
139 exitfn = _exit;
140 ev_signal_atfork(ev);
141 xdup2(sp[0], 0);
142 xdup2(sp[0], 1);
143 xclose(sp[0]);
144 xclose(sp[1]);
145 if(lfd != -1) {
146 xdup2(lfd, 2);
147 xclose(lfd);
148 }
149 signal(SIGPIPE, SIG_DFL);
150#if 0
151 execlp("valgrind", "valgrind", SPEAKER, "--config", configfile,
152 debugging ? "--debug" : "--no-debug", (char *)0);
153#else
154 execlp(SPEAKER, SPEAKER, "--config", configfile,
155 debugging ? "--debug" : "--no-debug", (char *)0);
156#endif
157 fatal(errno, "error invoking %s", SPEAKER);
158 }
159 ev_child(ev, pid, 0, speaker_terminated, 0);
160 speaker_fd = sp[1];
161 xclose(sp[0]);
162 cloexec(speaker_fd);
163 /* Don't need to make speaker_fd nonblocking because speaker_recv() uses
164 * MSG_DONTWAIT. */
165 ev_fd(ev, ev_read, speaker_fd, speaker_readable, 0);
166}
167
168void speaker_reload(void) {
169 struct speaker_message sm;
170
171 memset(&sm, 0, sizeof sm);
172 sm.type = SM_RELOAD;
84aa9f93 173 speaker_send(speaker_fd, &sm);
460b9539 174}
175
176/* timeout for play retry */
177static int play_again(ev_source *ev,
178 const struct timeval attribute((unused)) *now,
179 void attribute((unused)) *u) {
180 D(("play_again"));
181 play(ev);
182 return 0;
183}
184
185/* try calling play() again after @offset@ seconds */
186static void retry_play(ev_source *ev, int offset) {
187 struct timeval w;
188
189 D(("retry_play(%d)", offset));
190 gettimeofday(&w, 0);
191 w.tv_sec += offset;
192 ev_timeout(ev, 0, &w, play_again, 0);
193}
194
195/* Called when the currently playing track finishes playing. This
196 * might be because the player finished or because the speaker process
197 * told us so. */
198static void finished(ev_source *ev) {
199 D(("finished playing=%p", (void *)playing));
200 if(!playing)
201 return;
202 if(playing->state != playing_scratched)
203 notify_not_scratched(playing->track, playing->submitter);
204 switch(playing->state) {
205 case playing_ok:
206 eventlog("completed", playing->track, (char *)0);
207 break;
208 case playing_scratched:
209 eventlog("scratched", playing->track, playing->scratched, (char *)0);
210 break;
211 case playing_failed:
212 eventlog("failed", playing->track, wstat(playing->wstat), (char *)0);
213 break;
214 default:
215 break;
216 }
217 queue_played(playing);
218 recent_write();
219 forget_player_pid(playing->id);
220 playing = 0;
221 if(ev) retry_play(ev, config->gap);
222}
223
224/* Called when a player terminates. */
225static int player_finished(ev_source *ev,
226 pid_t pid,
227 int status,
228 const struct rusage attribute((unused)) *rusage,
229 void *u) {
230 struct queue_entry *q = u;
231
232 D(("player_finished pid=%lu status=%#x",
233 (unsigned long)pid, (unsigned)status));
234 /* Record that this PID is dead. If we killed the track we might know this
235 * already, but also it might have exited or crashed. Either way we don't
236 * want to end up signalling it. */
237 if(pid == find_player_pid(q->id))
238 forget_player_pid(q->id);
239 switch(q->state) {
240 case playing_unplayed:
241 case playing_random:
84aa9f93
RK
242 /* If this was a pre-prepared track then either it failed or we
243 * deliberately stopped it because it was removed from the queue or moved
244 * down it. So leave it state alone for future use. */
460b9539 245 break;
246 default:
247 /* We actually started playing this track. */
248 if(status) {
249 if(q->state != playing_scratched)
250 q->state = playing_failed;
251 } else
252 q->state = playing_ok;
253 break;
254 }
255 /* Regardless we always report and record the status and do cleanup for
256 * prefork calls. */
257 if(status)
258 error(0, "player for %s %s", q->track, wstat(status));
259 if(q->type & DISORDER_PLAYER_PREFORK)
260 play_cleanup(q->pl, q->data);
261 q->wstat = status;
262 /* If this actually was the current track, and does not use the speaker
263 * process, then it must have finished. For raw-output players we will get a
264 * separate notification from the speaker process. */
265 if(q == playing
266 && (q->type & DISORDER_PLAYER_TYPEMASK) != DISORDER_PLAYER_RAW)
267 finished(ev);
268 return 0;
269}
270
271/* Find the player for Q */
272static int find_player(const struct queue_entry *q) {
273 int n;
274
275 for(n = 0; n < config->player.n; ++n)
276 if(fnmatch(config->player.s[n].s[0], q->track, 0) == 0)
277 break;
278 if(n >= config->player.n)
279 return -1;
280 else
281 return n;
282}
283
284/* Return values from start() */
285#define START_OK 0 /* Succeeded. */
286#define START_HARDFAIL 1 /* Track is broken. */
287#define START_SOFTFAIL 2 /* Track OK, system (temporarily?) broken */
288
84aa9f93
RK
289/** @brief Play or prepare @p q
290 * @param ev Event loop
291 * @param q Track to play/prepare
292 * @param prepare_only If true, only prepares track
293 * @return @ref START_OK, @ref START_HARDFAIL or @ref START_SOFTFTAIL
294 */
460b9539 295static int start(ev_source *ev,
296 struct queue_entry *q,
84aa9f93 297 int prepare_only) {
460b9539 298 int n, lfd;
299 const char *p;
84aa9f93 300 int np[2], sfd;
460b9539 301 struct speaker_message sm;
302 char buffer[64];
303 int optc;
304 ao_sample_format format;
305 ao_device *device;
306 int retries;
307 struct timespec ts;
308 const char *waitdevice = 0;
309 const char *const *optv;
6d2d327c 310 pid_t pid, npid;
84aa9f93
RK
311 struct sockaddr_un addr;
312 uint32_t l;
460b9539 313
314 memset(&sm, 0, sizeof sm);
84aa9f93 315 D(("start %s %d", q->id, prepare_only));
460b9539 316 if(find_player_pid(q->id) > 0) {
84aa9f93
RK
317 if(prepare_only) return START_OK;
318 /* We have already prepared this track so we just need to tell the speaker
319 * process to start actually playing the queued up audio data */
460b9539 320 strcpy(sm.id, q->id);
321 sm.type = SM_PLAY;
84aa9f93
RK
322 speaker_send(speaker_fd, &sm);
323 D(("sent SM_PLAY for %s", sm.id));
460b9539 324 return START_OK;
325 }
326 /* Find the player plugin. */
327 if((n = find_player(q)) < 0) return START_HARDFAIL;
328 if(!(q->pl = open_plugin(config->player.s[n].s[1], 0)))
329 return START_HARDFAIL;
330 q->type = play_get_type(q->pl);
331 /* Can't prepare non-raw tracks. */
84aa9f93 332 if(prepare_only
460b9539 333 && (q->type & DISORDER_PLAYER_TYPEMASK) != DISORDER_PLAYER_RAW)
334 return START_OK;
335 /* Call the prefork function. */
336 p = trackdb_rawpath(q->track);
337 if(q->type & DISORDER_PLAYER_PREFORK)
338 if(!(q->data = play_prefork(q->pl, p))) {
339 error(0, "prefork function for %s failed", q->track);
340 return START_HARDFAIL;
341 }
342 /* Use the second arg as the tag if available (it's probably a command name),
343 * otherwise the module name. */
344 lfd = logfd(ev, (config->player.s[n].s[2]
345 ? config->player.s[n].s[2] : config->player.s[n].s[1]));
346 optc = config->player.s[n].n - 2;
347 optv = (void *)&config->player.s[n].s[2];
348 while(optc > 0 && optv[0][0] == '-') {
349 if(!strcmp(optv[0], "--")) {
350 ++optv;
351 --optc;
352 break;
353 }
354 if(!strcmp(optv[0], "--wait-for-device")
355 || !strncmp(optv[0], "--wait-for-device=", 18)) {
356 if((waitdevice = strchr(optv[0], '='))) {
357 ++waitdevice;
358 } else
359 waitdevice = ""; /* use default */
360 ++optv;
361 --optc;
362 } else {
363 error(0, "unknown option %s", optv[0]);
364 return START_HARDFAIL;
365 }
366 }
367 switch(pid = fork()) {
368 case 0: /* child */
369 exitfn = _exit;
370 ev_signal_atfork(ev);
371 signal(SIGPIPE, SIG_DFL);
372 xdup2(lfd, 1);
373 xdup2(lfd, 2);
374 xclose(lfd); /* tidy up */
375 setpgid(0, 0);
376 if((q->type & DISORDER_PLAYER_TYPEMASK) == DISORDER_PLAYER_RAW) {
84aa9f93
RK
377 /* "Raw" format players always have their output send down a pipe
378 * to the disorder-normalize process. This will connect to the
379 * speaker process to actually play the audio data.
6d2d327c
RK
380 */
381 /* np will be the pipe to disorder-normalize */
382 if(socketpair(PF_UNIX, SOCK_STREAM, 0, np) < 0)
383 fatal(errno, "error calling socketpair");
384 xshutdown(np[0], SHUT_WR); /* normalize reads from np[0] */
385 xshutdown(np[1], SHUT_RD); /* decoder writes to np[1] */
6d2d327c
RK
386 /* Start disorder-normalize */
387 if(!(npid = xfork())) {
388 if(!xfork()) {
84aa9f93
RK
389 /* Connect to the speaker process */
390 memset(&addr, 0, sizeof addr);
391 addr.sun_family = AF_UNIX;
392 snprintf(addr.sun_path, sizeof addr.sun_path,
393 "%s/speaker", config->home);
394 sfd = xsocket(PF_UNIX, SOCK_STREAM, 0);
dc450d30 395 if(connect(sfd, (const struct sockaddr *)&addr, sizeof addr) < 0)
84aa9f93
RK
396 fatal(errno, "connecting to %s", addr.sun_path);
397 l = strlen(q->id);
398 if(write(sfd, &l, sizeof l) < 0
399 || write(sfd, q->id, l) < 0)
400 fatal(errno, "writing to %s", addr.sun_path);
401 /* Await the ack */
402 read(sfd, &l, 1);
403 /* Plumbing */
6d2d327c 404 xdup2(np[0], 0);
84aa9f93 405 xdup2(sfd, 1);
6d2d327c
RK
406 xclose(np[0]);
407 xclose(np[1]);
84aa9f93
RK
408 xclose(sfd);
409 /* Ask the speaker to actually start playing the track; we do it here
410 * so it's definitely after ack. */
411 if(!prepare_only) {
412 strcpy(sm.id, q->id);
413 sm.type = SM_PLAY;
414 speaker_send(speaker_fd, &sm);
415 D(("sent SM_PLAY for %s", sm.id));
416 }
6d2d327c
RK
417 execlp("disorder-normalize", "disorder-normalize", (char *)0);
418 fatal(errno, "executing disorder-normalize");
84aa9f93 419 /* end of the innermost fork */
6d2d327c
RK
420 }
421 _exit(0);
84aa9f93 422 /* end of the middle fork */
6d2d327c 423 }
84aa9f93
RK
424 /* Wait for the middle fork to finish */
425 while(waitpid(npid, &n, 0) < 0 && errno == EINTR)
426 ;
460b9539 427 /* Pass the file descriptor to the driver in an environment
428 * variable. */
6d2d327c 429 snprintf(buffer, sizeof buffer, "DISORDER_RAW_FD=%d", np[1]);
460b9539 430 if(putenv(buffer) < 0)
431 fatal(errno, "error calling putenv");
6d2d327c 432 /* Close all the FDs we don't need */
6d2d327c 433 xclose(np[0]);
460b9539 434 }
435 if(waitdevice) {
436 ao_initialize();
437 if(*waitdevice) {
438 n = ao_driver_id(waitdevice);
439 if(n == -1)
440 fatal(0, "invalid libao driver: %s", optv[0]);
441 } else
442 n = ao_default_driver_id();
443 /* Make up a format. */
444 memset(&format, 0, sizeof format);
445 format.bits = 8;
446 format.rate = 44100;
447 format.channels = 1;
448 format.byte_format = AO_FMT_NATIVE;
449 retries = 20;
450 ts.tv_sec = 0;
451 ts.tv_nsec = 100000000; /* 0.1s */
452 while((device = ao_open_live(n, &format, 0)) == 0 && retries-- > 0)
453 nanosleep(&ts, 0);
454 if(device)
455 ao_close(device);
456 }
457 play_track(q->pl,
458 optv, optc,
459 p,
460 q->track);
461 _exit(0);
462 case -1: /* error */
463 error(errno, "error calling fork");
464 if(q->type & DISORDER_PLAYER_PREFORK)
465 play_cleanup(q->pl, q->data); /* else would leak */
466 xclose(lfd);
467 return START_SOFTFAIL;
468 }
469 store_player_pid(q->id, pid);
470 xclose(lfd);
471 setpgid(pid, pid);
472 ev_child(ev, pid, 0, player_finished, q);
473 D(("player subprocess ID %lu", (unsigned long)pid));
474 return START_OK;
475}
476
477int prepare(ev_source *ev,
478 struct queue_entry *q) {
479 int n;
480
481 /* Find the player plugin */
482 if(find_player_pid(q->id) > 0) return 0; /* Already going. */
483 if((n = find_player(q)) < 0) return -1; /* No player */
484 q->pl = open_plugin(config->player.s[n].s[1], 0); /* No player */
485 q->type = play_get_type(q->pl);
486 if((q->type & DISORDER_PLAYER_TYPEMASK) != DISORDER_PLAYER_RAW)
487 return 0; /* Not a raw player */
84aa9f93 488 return start(ev, q, 1/*prepare_only*/); /* Prepare it */
460b9539 489}
490
491void abandon(ev_source attribute((unused)) *ev,
492 struct queue_entry *q) {
493 struct speaker_message sm;
494 pid_t pid = find_player_pid(q->id);
495
496 if(pid < 0) return; /* Not prepared. */
497 if((q->type & DISORDER_PLAYER_TYPEMASK) != DISORDER_PLAYER_RAW)
498 return; /* Not a raw player. */
499 /* Terminate the player. */
500 kill(-pid, config->signal);
501 forget_player_pid(q->id);
502 /* Cancel the track. */
503 memset(&sm, 0, sizeof sm);
504 sm.type = SM_CANCEL;
505 strcpy(sm.id, q->id);
84aa9f93 506 speaker_send(speaker_fd, &sm);
460b9539 507}
508
509int add_random_track(void) {
510 struct queue_entry *q;
511 const char *p;
459d4402 512 long qlen = 0;
513 int rc = 0;
460b9539 514
515 /* If random play is not enabled then do nothing. */
516 if(shutting_down || !random_is_enabled())
517 return 0;
459d4402 518 /* Count how big the queue is */
460b9539 519 for(q = qhead.next; q != &qhead; q = q->next)
459d4402 520 ++qlen;
521 /* Add random tracks until the queue is at the right size */
522 while(qlen < config->queue_pad) {
523 /* Try to pick a random track */
524 if(!(p = trackdb_random(16))) {
525 rc = -1;
526 break;
527 }
528 /* Add it to the end of the queue. */
529 q = queue_add(p, 0, WHERE_END);
530 q->state = playing_random;
531 D(("picked %p (%s) at random", (void *)q, q->track));
532 ++qlen;
533 }
460b9539 534 /* Commit the queue */
535 queue_write();
459d4402 536 return rc;
460b9539 537}
538
539/* try to play a track */
540void play(ev_source *ev) {
541 struct queue_entry *q;
542 int random_enabled = random_is_enabled();
543
544 D(("play playing=%p", (void *)playing));
545 if(shutting_down || playing || !playing_is_enabled()) return;
546 /* If the queue is empty then add a random track. */
547 if(qhead.next == &qhead) {
548 if(!random_enabled)
549 return;
550 if(add_random_track()) {
551 /* On error, try again in 10s. */
552 retry_play(ev, 10);
553 return;
554 }
555 /* Now there must be at least one track in the queue. */
556 }
557 q = qhead.next;
558 /* If random play is disabled but the track is a random one then don't play
559 * it. play() will be called again when random play is re-enabled. */
560 if(!random_enabled && q->state == playing_random)
561 return;
562 D(("taken %p (%s) from queue", (void *)q, q->track));
563 /* Try to start playing. */
84aa9f93 564 switch(start(ev, q, 0/*!prepare_only*/)) {
460b9539 565 case START_HARDFAIL:
566 if(q == qhead.next) {
567 queue_remove(q, 0); /* Abandon this track. */
568 queue_played(q);
569 recent_write();
570 }
571 if(qhead.next == &qhead)
572 /* Queue is empty, wait a bit before trying something else (so we don't
573 * sit there looping madly in the presence of persistent problem). Note
574 * that we might not reliably get a random track lookahead in this case,
575 * but if we get here then really there are bigger problems. */
576 retry_play(ev, 1);
577 else
578 /* More in queue, try again now. */
579 play(ev);
580 break;
581 case START_SOFTFAIL:
582 /* Try same track again in a bit. */
583 retry_play(ev, 10);
584 break;
585 case START_OK:
586 if(q == qhead.next) {
587 queue_remove(q, 0);
588 queue_write();
589 }
590 playing = q;
591 time(&playing->played);
592 playing->state = playing_started;
593 notify_play(playing->track, playing->submitter);
594 eventlog("playing", playing->track,
595 playing->submitter ? playing->submitter : (const char *)0,
596 (const char *)0);
597 /* Maybe add a random track. */
598 add_random_track();
599 /* If there is another track in the queue prepare it now. This could
600 * potentially be a just-added random track. */
601 if(qhead.next != &qhead)
602 prepare(ev, qhead.next);
603 break;
604 }
605}
606
607int playing_is_enabled(void) {
608 const char *s = trackdb_get_global("playing");
609
610 return !s || !strcmp(s, "yes");
611}
612
613void enable_playing(const char *who, ev_source *ev) {
614 trackdb_set_global("playing", "yes", who);
615 /* Add a random track if necessary. */
616 add_random_track();
617 play(ev);
618}
619
620void disable_playing(const char *who) {
621 trackdb_set_global("playing", "no", who);
622}
623
624int random_is_enabled(void) {
625 const char *s = trackdb_get_global("random-play");
626
627 return !s || !strcmp(s, "yes");
628}
629
630void enable_random(const char *who, ev_source *ev) {
631 trackdb_set_global("random-play", "yes", who);
632 add_random_track();
633 play(ev);
634}
635
636void disable_random(const char *who) {
637 trackdb_set_global("random-play", "no", who);
638}
639
640void scratch(const char *who, const char *id) {
641 struct queue_entry *q;
642 struct speaker_message sm;
643 pid_t pid;
644
645 D(("scratch playing=%p state=%d id=%s playing->id=%s",
646 (void *)playing,
647 playing ? playing->state : 0,
648 id ? id : "(none)",
649 playing ? playing->id : "(none)"));
650 if(playing
651 && (playing->state == playing_started
652 || playing->state == playing_paused)
653 && (!id
654 || !strcmp(id, playing->id))) {
655 playing->state = playing_scratched;
656 playing->scratched = who ? xstrdup(who) : 0;
657 if((pid = find_player_pid(playing->id)) > 0) {
658 D(("kill -%d %lu", config->signal, (unsigned long)pid));
659 kill(-pid, config->signal);
660 forget_player_pid(playing->id);
661 } else
662 error(0, "could not find PID for %s", playing->id);
663 if((playing->type & DISORDER_PLAYER_TYPEMASK) == DISORDER_PLAYER_RAW) {
664 memset(&sm, 0, sizeof sm);
665 sm.type = SM_CANCEL;
666 strcpy(sm.id, playing->id);
84aa9f93 667 speaker_send(speaker_fd, &sm);
460b9539 668 D(("sending SM_CANCEL for %s", playing->id));
669 }
670 /* put a scratch track onto the front of the queue (but don't
671 * bother if playing is disabled) */
672 if(playing_is_enabled() && config->scratch.n) {
673 int r = rand() * (double)config->scratch.n / (RAND_MAX + 1.0);
674 q = queue_add(config->scratch.s[r], who, WHERE_START);
675 q->state = playing_isscratch;
676 }
677 notify_scratch(playing->track, playing->submitter, who,
678 time(0) - playing->played);
679 }
680}
681
682void quitting(ev_source *ev) {
683 struct queue_entry *q;
684 pid_t pid;
685
686 /* Don't start anything new */
687 shutting_down = 1;
688 /* Shut down the current player */
689 if(playing) {
690 if((pid = find_player_pid(playing->id)) > 0) {
691 kill(-pid, config->signal);
692 forget_player_pid(playing->id);
693 } else
694 error(0, "could not find PID for %s", playing->id);
695 playing->state = playing_quitting;
696 finished(0);
697 }
698 /* Zap any other players */
699 for(q = qhead.next; q != &qhead; q = q->next)
700 if((pid = find_player_pid(q->id)) > 0) {
701 D(("kill -%d %lu", config->signal, (unsigned long)pid));
702 kill(-pid, config->signal);
703 forget_player_pid(q->id);
704 } else
705 error(0, "could not find PID for %s", q->id);
706 /* Don't need the speaker any more */
707 ev_fd_cancel(ev, ev_read, speaker_fd);
708 xclose(speaker_fd);
709}
710
711int pause_playing(const char *who) {
712 struct speaker_message sm;
713 long played;
714
715 /* Can't pause if already paused or if nothing playing. */
716 if(!playing || paused) return 0;
717 switch(playing->type & DISORDER_PLAYER_TYPEMASK) {
718 case DISORDER_PLAYER_STANDALONE:
719 if(!(playing->type & DISORDER_PLAYER_PAUSES)) {
720 default:
721 error(0, "cannot pause because player is not powerful enough");
722 return -1;
723 }
724 if(play_pause(playing->pl, &played, playing->data)) {
725 error(0, "player indicates it cannot pause");
726 return -1;
727 }
728 time(&playing->lastpaused);
729 playing->uptopause = played;
730 playing->lastresumed = 0;
731 break;
732 case DISORDER_PLAYER_RAW:
733 memset(&sm, 0, sizeof sm);
734 sm.type = SM_PAUSE;
84aa9f93 735 speaker_send(speaker_fd, &sm);
460b9539 736 break;
737 }
738 if(who) info("paused by %s", who);
739 notify_pause(playing->track, who);
740 paused = 1;
741 if(playing->state == playing_started)
742 playing->state = playing_paused;
743 eventlog("state", "pause", (char *)0);
744 return 0;
745}
746
747void resume_playing(const char *who) {
748 struct speaker_message sm;
749
750 if(!paused) return;
751 paused = 0;
752 if(!playing) return;
753 switch(playing->type & DISORDER_PLAYER_TYPEMASK) {
754 case DISORDER_PLAYER_STANDALONE:
755 if(!playing->type & DISORDER_PLAYER_PAUSES) {
756 default:
757 /* Shouldn't happen */
758 return;
759 }
760 play_resume(playing->pl, playing->data);
761 time(&playing->lastresumed);
762 break;
763 case DISORDER_PLAYER_RAW:
764 memset(&sm, 0, sizeof sm);
765 sm.type = SM_RESUME;
84aa9f93 766 speaker_send(speaker_fd, &sm);
460b9539 767 break;
768 }
769 if(who) info("resumed by %s", who);
770 notify_resume(playing->track, who);
771 if(playing->state == playing_paused)
772 playing->state = playing_started;
773 eventlog("state", "resume", (char *)0);
774}
775
776/*
777Local Variables:
778c-basic-offset:2
779comment-column:40
780fill-column:79
781End:
782*/