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[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"
f08c0859 46#include "server-queue.h"
460b9539 47#include "trackdb.h"
48#include "play.h"
49#include "plugin.h"
50#include "wstat.h"
51#include "eventlog.h"
52#include "logfd.h"
53#include "syscalls.h"
ea410ba1 54#include "speaker-protocol.h"
460b9539 55#include "disorder.h"
56#include "signame.h"
57#include "hash.h"
58
59#define SPEAKER "disorder-speaker"
60
61struct queue_entry *playing;
62int paused;
63
64static void finished(ev_source *ev);
65
66static int speaker_fd = -1;
67static hash *player_pids;
68static int shutting_down;
69
70static void store_player_pid(const char *id, pid_t pid) {
71 if(!player_pids) player_pids = hash_new(sizeof (pid_t));
72 hash_add(player_pids, id, &pid, HASH_INSERT_OR_REPLACE);
73}
74
75static pid_t find_player_pid(const char *id) {
76 pid_t *pidp;
77
78 if(player_pids && (pidp = hash_find(player_pids, id))) return *pidp;
79 return -1;
80}
81
82static void forget_player_pid(const char *id) {
83 if(player_pids) hash_remove(player_pids, id);
84}
85
86/* called when speaker process terminates */
87static int speaker_terminated(ev_source attribute((unused)) *ev,
88 pid_t attribute((unused)) pid,
89 int attribute((unused)) status,
90 const struct rusage attribute((unused)) *rusage,
91 void attribute((unused)) *u) {
0213d16c 92 fatal(0, "speaker subprocess %s",
2a6c7b79 93 wstat(status));
460b9539 94}
95
96/* called when speaker process has something to say */
97static int speaker_readable(ev_source *ev, int fd,
98 void attribute((unused)) *u) {
99 struct speaker_message sm;
84aa9f93 100 int ret = speaker_recv(fd, &sm);
460b9539 101
102 if(ret < 0) return 0; /* EAGAIN */
103 if(!ret) { /* EOF */
104 ev_fd_cancel(ev, ev_read, fd);
105 return 0;
106 }
107 switch(sm.type) {
108 case SM_PAUSED:
109 /* track ID is paused, DATA seconds played */
110 D(("SM_PAUSED %s %ld", sm.id, sm.data));
111 playing->sofar = sm.data;
112 break;
113 case SM_FINISHED:
114 /* the playing track finished */
115 D(("SM_FINISHED %s", sm.id));
116 finished(ev);
117 break;
118 case SM_PLAYING:
119 /* track ID is playing, DATA seconds played */
120 D(("SM_PLAYING %s %ld", sm.id, sm.data));
121 playing->sofar = sm.data;
122 break;
123 default:
124 error(0, "unknown message type %d", sm.type);
125 }
126 return 0;
127}
128
129void speaker_setup(ev_source *ev) {
130 int sp[2], lfd;
131 pid_t pid;
937be4c0 132 struct speaker_message sm;
460b9539 133
134 if(socketpair(PF_UNIX, SOCK_DGRAM, 0, sp) < 0)
135 fatal(errno, "error calling socketpair");
136 if(!isatty(2))
137 lfd = logfd(ev, SPEAKER);
138 else
139 lfd = -1;
140 if(!(pid = xfork())) {
141 exitfn = _exit;
142 ev_signal_atfork(ev);
143 xdup2(sp[0], 0);
144 xdup2(sp[0], 1);
145 xclose(sp[0]);
146 xclose(sp[1]);
147 if(lfd != -1) {
148 xdup2(lfd, 2);
149 xclose(lfd);
150 }
151 signal(SIGPIPE, SIG_DFL);
152#if 0
153 execlp("valgrind", "valgrind", SPEAKER, "--config", configfile,
154 debugging ? "--debug" : "--no-debug", (char *)0);
155#else
156 execlp(SPEAKER, SPEAKER, "--config", configfile,
157 debugging ? "--debug" : "--no-debug", (char *)0);
158#endif
159 fatal(errno, "error invoking %s", SPEAKER);
160 }
161 ev_child(ev, pid, 0, speaker_terminated, 0);
162 speaker_fd = sp[1];
163 xclose(sp[0]);
164 cloexec(speaker_fd);
937be4c0
RK
165 /* Wait for the speaker to be ready */
166 speaker_recv(speaker_fd, &sm);
167 nonblock(speaker_fd);
e8c92ba7 168 ev_fd(ev, ev_read, speaker_fd, speaker_readable, 0, "speaker read");
460b9539 169}
170
171void speaker_reload(void) {
172 struct speaker_message sm;
173
174 memset(&sm, 0, sizeof sm);
175 sm.type = SM_RELOAD;
84aa9f93 176 speaker_send(speaker_fd, &sm);
460b9539 177}
178
179/* timeout for play retry */
180static int play_again(ev_source *ev,
181 const struct timeval attribute((unused)) *now,
182 void attribute((unused)) *u) {
183 D(("play_again"));
184 play(ev);
185 return 0;
186}
187
188/* try calling play() again after @offset@ seconds */
189static void retry_play(ev_source *ev, int offset) {
190 struct timeval w;
191
192 D(("retry_play(%d)", offset));
193 gettimeofday(&w, 0);
194 w.tv_sec += offset;
195 ev_timeout(ev, 0, &w, play_again, 0);
196}
197
198/* Called when the currently playing track finishes playing. This
199 * might be because the player finished or because the speaker process
200 * told us so. */
201static void finished(ev_source *ev) {
202 D(("finished playing=%p", (void *)playing));
203 if(!playing)
204 return;
205 if(playing->state != playing_scratched)
206 notify_not_scratched(playing->track, playing->submitter);
207 switch(playing->state) {
208 case playing_ok:
209 eventlog("completed", playing->track, (char *)0);
210 break;
211 case playing_scratched:
212 eventlog("scratched", playing->track, playing->scratched, (char *)0);
213 break;
214 case playing_failed:
215 eventlog("failed", playing->track, wstat(playing->wstat), (char *)0);
216 break;
217 default:
218 break;
219 }
220 queue_played(playing);
221 recent_write();
222 forget_player_pid(playing->id);
223 playing = 0;
224 if(ev) retry_play(ev, config->gap);
225}
226
227/* Called when a player terminates. */
228static int player_finished(ev_source *ev,
229 pid_t pid,
230 int status,
231 const struct rusage attribute((unused)) *rusage,
232 void *u) {
233 struct queue_entry *q = u;
234
235 D(("player_finished pid=%lu status=%#x",
236 (unsigned long)pid, (unsigned)status));
237 /* Record that this PID is dead. If we killed the track we might know this
238 * already, but also it might have exited or crashed. Either way we don't
239 * want to end up signalling it. */
240 if(pid == find_player_pid(q->id))
241 forget_player_pid(q->id);
242 switch(q->state) {
243 case playing_unplayed:
244 case playing_random:
84aa9f93
RK
245 /* If this was a pre-prepared track then either it failed or we
246 * deliberately stopped it because it was removed from the queue or moved
247 * down it. So leave it state alone for future use. */
460b9539 248 break;
249 default:
250 /* We actually started playing this track. */
251 if(status) {
252 if(q->state != playing_scratched)
253 q->state = playing_failed;
254 } else
255 q->state = playing_ok;
256 break;
257 }
258 /* Regardless we always report and record the status and do cleanup for
259 * prefork calls. */
260 if(status)
261 error(0, "player for %s %s", q->track, wstat(status));
262 if(q->type & DISORDER_PLAYER_PREFORK)
263 play_cleanup(q->pl, q->data);
264 q->wstat = status;
265 /* If this actually was the current track, and does not use the speaker
266 * process, then it must have finished. For raw-output players we will get a
267 * separate notification from the speaker process. */
268 if(q == playing
269 && (q->type & DISORDER_PLAYER_TYPEMASK) != DISORDER_PLAYER_RAW)
270 finished(ev);
271 return 0;
272}
273
274/* Find the player for Q */
275static int find_player(const struct queue_entry *q) {
276 int n;
277
278 for(n = 0; n < config->player.n; ++n)
279 if(fnmatch(config->player.s[n].s[0], q->track, 0) == 0)
280 break;
281 if(n >= config->player.n)
282 return -1;
283 else
284 return n;
285}
286
287/* Return values from start() */
3149c1e2
RK
288#define START_OK 0 /**< @brief Succeeded. */
289#define START_HARDFAIL 1 /**< @brief Track is broken. */
290#define START_SOFTFAIL 2 /**< @brief Track OK, system (temporarily?) broken */
460b9539 291
84aa9f93
RK
292/** @brief Play or prepare @p q
293 * @param ev Event loop
294 * @param q Track to play/prepare
295 * @param prepare_only If true, only prepares track
3149c1e2 296 * @return @ref START_OK, @ref START_HARDFAIL or @ref START_SOFTFAIL
84aa9f93 297 */
460b9539 298static int start(ev_source *ev,
299 struct queue_entry *q,
84aa9f93 300 int prepare_only) {
460b9539 301 int n, lfd;
302 const char *p;
84aa9f93 303 int np[2], sfd;
460b9539 304 struct speaker_message sm;
305 char buffer[64];
306 int optc;
307 ao_sample_format format;
308 ao_device *device;
309 int retries;
310 struct timespec ts;
311 const char *waitdevice = 0;
312 const char *const *optv;
6d2d327c 313 pid_t pid, npid;
84aa9f93
RK
314 struct sockaddr_un addr;
315 uint32_t l;
460b9539 316
317 memset(&sm, 0, sizeof sm);
84aa9f93 318 D(("start %s %d", q->id, prepare_only));
460b9539 319 if(find_player_pid(q->id) > 0) {
84aa9f93
RK
320 if(prepare_only) return START_OK;
321 /* We have already prepared this track so we just need to tell the speaker
322 * process to start actually playing the queued up audio data */
460b9539 323 strcpy(sm.id, q->id);
324 sm.type = SM_PLAY;
84aa9f93
RK
325 speaker_send(speaker_fd, &sm);
326 D(("sent SM_PLAY for %s", sm.id));
460b9539 327 return START_OK;
328 }
329 /* Find the player plugin. */
330 if((n = find_player(q)) < 0) return START_HARDFAIL;
331 if(!(q->pl = open_plugin(config->player.s[n].s[1], 0)))
332 return START_HARDFAIL;
333 q->type = play_get_type(q->pl);
334 /* Can't prepare non-raw tracks. */
84aa9f93 335 if(prepare_only
460b9539 336 && (q->type & DISORDER_PLAYER_TYPEMASK) != DISORDER_PLAYER_RAW)
337 return START_OK;
338 /* Call the prefork function. */
339 p = trackdb_rawpath(q->track);
340 if(q->type & DISORDER_PLAYER_PREFORK)
341 if(!(q->data = play_prefork(q->pl, p))) {
342 error(0, "prefork function for %s failed", q->track);
343 return START_HARDFAIL;
344 }
345 /* Use the second arg as the tag if available (it's probably a command name),
346 * otherwise the module name. */
e99d42b1 347 if(!isatty(2))
348 lfd = logfd(ev, (config->player.s[n].s[2]
349 ? config->player.s[n].s[2] : config->player.s[n].s[1]));
350 else
351 lfd = -1;
460b9539 352 optc = config->player.s[n].n - 2;
353 optv = (void *)&config->player.s[n].s[2];
354 while(optc > 0 && optv[0][0] == '-') {
355 if(!strcmp(optv[0], "--")) {
356 ++optv;
357 --optc;
358 break;
359 }
360 if(!strcmp(optv[0], "--wait-for-device")
361 || !strncmp(optv[0], "--wait-for-device=", 18)) {
362 if((waitdevice = strchr(optv[0], '='))) {
363 ++waitdevice;
364 } else
365 waitdevice = ""; /* use default */
366 ++optv;
367 --optc;
368 } else {
369 error(0, "unknown option %s", optv[0]);
370 return START_HARDFAIL;
371 }
372 }
373 switch(pid = fork()) {
374 case 0: /* child */
375 exitfn = _exit;
376 ev_signal_atfork(ev);
377 signal(SIGPIPE, SIG_DFL);
e99d42b1 378 if(lfd != -1) {
379 xdup2(lfd, 1);
380 xdup2(lfd, 2);
381 xclose(lfd); /* tidy up */
382 }
460b9539 383 setpgid(0, 0);
384 if((q->type & DISORDER_PLAYER_TYPEMASK) == DISORDER_PLAYER_RAW) {
84aa9f93
RK
385 /* "Raw" format players always have their output send down a pipe
386 * to the disorder-normalize process. This will connect to the
387 * speaker process to actually play the audio data.
6d2d327c
RK
388 */
389 /* np will be the pipe to disorder-normalize */
390 if(socketpair(PF_UNIX, SOCK_STREAM, 0, np) < 0)
391 fatal(errno, "error calling socketpair");
392 xshutdown(np[0], SHUT_WR); /* normalize reads from np[0] */
393 xshutdown(np[1], SHUT_RD); /* decoder writes to np[1] */
937be4c0
RK
394 blocking(np[0]);
395 blocking(np[1]);
6d2d327c
RK
396 /* Start disorder-normalize */
397 if(!(npid = xfork())) {
398 if(!xfork()) {
84aa9f93
RK
399 /* Connect to the speaker process */
400 memset(&addr, 0, sizeof addr);
401 addr.sun_family = AF_UNIX;
402 snprintf(addr.sun_path, sizeof addr.sun_path,
403 "%s/speaker", config->home);
404 sfd = xsocket(PF_UNIX, SOCK_STREAM, 0);
dc450d30 405 if(connect(sfd, (const struct sockaddr *)&addr, sizeof addr) < 0)
84aa9f93
RK
406 fatal(errno, "connecting to %s", addr.sun_path);
407 l = strlen(q->id);
408 if(write(sfd, &l, sizeof l) < 0
409 || write(sfd, q->id, l) < 0)
410 fatal(errno, "writing to %s", addr.sun_path);
411 /* Await the ack */
412 read(sfd, &l, 1);
413 /* Plumbing */
6d2d327c 414 xdup2(np[0], 0);
84aa9f93 415 xdup2(sfd, 1);
6d2d327c
RK
416 xclose(np[0]);
417 xclose(np[1]);
84aa9f93
RK
418 xclose(sfd);
419 /* Ask the speaker to actually start playing the track; we do it here
420 * so it's definitely after ack. */
421 if(!prepare_only) {
422 strcpy(sm.id, q->id);
423 sm.type = SM_PLAY;
424 speaker_send(speaker_fd, &sm);
425 D(("sent SM_PLAY for %s", sm.id));
426 }
6d2d327c
RK
427 execlp("disorder-normalize", "disorder-normalize", (char *)0);
428 fatal(errno, "executing disorder-normalize");
84aa9f93 429 /* end of the innermost fork */
6d2d327c
RK
430 }
431 _exit(0);
84aa9f93 432 /* end of the middle fork */
6d2d327c 433 }
84aa9f93
RK
434 /* Wait for the middle fork to finish */
435 while(waitpid(npid, &n, 0) < 0 && errno == EINTR)
436 ;
460b9539 437 /* Pass the file descriptor to the driver in an environment
438 * variable. */
6d2d327c 439 snprintf(buffer, sizeof buffer, "DISORDER_RAW_FD=%d", np[1]);
460b9539 440 if(putenv(buffer) < 0)
441 fatal(errno, "error calling putenv");
6d2d327c 442 /* Close all the FDs we don't need */
6d2d327c 443 xclose(np[0]);
460b9539 444 }
445 if(waitdevice) {
446 ao_initialize();
447 if(*waitdevice) {
448 n = ao_driver_id(waitdevice);
449 if(n == -1)
450 fatal(0, "invalid libao driver: %s", optv[0]);
451 } else
452 n = ao_default_driver_id();
453 /* Make up a format. */
454 memset(&format, 0, sizeof format);
455 format.bits = 8;
456 format.rate = 44100;
457 format.channels = 1;
458 format.byte_format = AO_FMT_NATIVE;
459 retries = 20;
460 ts.tv_sec = 0;
461 ts.tv_nsec = 100000000; /* 0.1s */
462 while((device = ao_open_live(n, &format, 0)) == 0 && retries-- > 0)
463 nanosleep(&ts, 0);
464 if(device)
465 ao_close(device);
466 }
467 play_track(q->pl,
468 optv, optc,
469 p,
470 q->track);
471 _exit(0);
472 case -1: /* error */
473 error(errno, "error calling fork");
474 if(q->type & DISORDER_PLAYER_PREFORK)
475 play_cleanup(q->pl, q->data); /* else would leak */
e99d42b1 476 if(lfd != -1)
477 xclose(lfd);
460b9539 478 return START_SOFTFAIL;
479 }
480 store_player_pid(q->id, pid);
e99d42b1 481 if(lfd != -1)
482 xclose(lfd);
460b9539 483 setpgid(pid, pid);
484 ev_child(ev, pid, 0, player_finished, q);
485 D(("player subprocess ID %lu", (unsigned long)pid));
486 return START_OK;
487}
488
489int prepare(ev_source *ev,
490 struct queue_entry *q) {
491 int n;
492
493 /* Find the player plugin */
494 if(find_player_pid(q->id) > 0) return 0; /* Already going. */
495 if((n = find_player(q)) < 0) return -1; /* No player */
496 q->pl = open_plugin(config->player.s[n].s[1], 0); /* No player */
497 q->type = play_get_type(q->pl);
498 if((q->type & DISORDER_PLAYER_TYPEMASK) != DISORDER_PLAYER_RAW)
499 return 0; /* Not a raw player */
84aa9f93 500 return start(ev, q, 1/*prepare_only*/); /* Prepare it */
460b9539 501}
502
503void abandon(ev_source attribute((unused)) *ev,
504 struct queue_entry *q) {
505 struct speaker_message sm;
506 pid_t pid = find_player_pid(q->id);
507
508 if(pid < 0) return; /* Not prepared. */
509 if((q->type & DISORDER_PLAYER_TYPEMASK) != DISORDER_PLAYER_RAW)
510 return; /* Not a raw player. */
511 /* Terminate the player. */
512 kill(-pid, config->signal);
513 forget_player_pid(q->id);
514 /* Cancel the track. */
515 memset(&sm, 0, sizeof sm);
516 sm.type = SM_CANCEL;
517 strcpy(sm.id, q->id);
84aa9f93 518 speaker_send(speaker_fd, &sm);
460b9539 519}
520
521int add_random_track(void) {
522 struct queue_entry *q;
523 const char *p;
459d4402 524 long qlen = 0;
525 int rc = 0;
460b9539 526
527 /* If random play is not enabled then do nothing. */
528 if(shutting_down || !random_is_enabled())
529 return 0;
459d4402 530 /* Count how big the queue is */
460b9539 531 for(q = qhead.next; q != &qhead; q = q->next)
459d4402 532 ++qlen;
533 /* Add random tracks until the queue is at the right size */
534 while(qlen < config->queue_pad) {
535 /* Try to pick a random track */
536 if(!(p = trackdb_random(16))) {
537 rc = -1;
538 break;
539 }
540 /* Add it to the end of the queue. */
541 q = queue_add(p, 0, WHERE_END);
542 q->state = playing_random;
543 D(("picked %p (%s) at random", (void *)q, q->track));
544 ++qlen;
545 }
460b9539 546 /* Commit the queue */
547 queue_write();
459d4402 548 return rc;
460b9539 549}
550
551/* try to play a track */
552void play(ev_source *ev) {
553 struct queue_entry *q;
554 int random_enabled = random_is_enabled();
555
556 D(("play playing=%p", (void *)playing));
557 if(shutting_down || playing || !playing_is_enabled()) return;
558 /* If the queue is empty then add a random track. */
559 if(qhead.next == &qhead) {
560 if(!random_enabled)
561 return;
562 if(add_random_track()) {
563 /* On error, try again in 10s. */
564 retry_play(ev, 10);
565 return;
566 }
567 /* Now there must be at least one track in the queue. */
568 }
569 q = qhead.next;
570 /* If random play is disabled but the track is a random one then don't play
571 * it. play() will be called again when random play is re-enabled. */
572 if(!random_enabled && q->state == playing_random)
573 return;
574 D(("taken %p (%s) from queue", (void *)q, q->track));
575 /* Try to start playing. */
84aa9f93 576 switch(start(ev, q, 0/*!prepare_only*/)) {
460b9539 577 case START_HARDFAIL:
578 if(q == qhead.next) {
579 queue_remove(q, 0); /* Abandon this track. */
580 queue_played(q);
581 recent_write();
582 }
583 if(qhead.next == &qhead)
584 /* Queue is empty, wait a bit before trying something else (so we don't
585 * sit there looping madly in the presence of persistent problem). Note
586 * that we might not reliably get a random track lookahead in this case,
587 * but if we get here then really there are bigger problems. */
588 retry_play(ev, 1);
589 else
590 /* More in queue, try again now. */
591 play(ev);
592 break;
593 case START_SOFTFAIL:
594 /* Try same track again in a bit. */
595 retry_play(ev, 10);
596 break;
597 case START_OK:
598 if(q == qhead.next) {
599 queue_remove(q, 0);
600 queue_write();
601 }
602 playing = q;
603 time(&playing->played);
604 playing->state = playing_started;
605 notify_play(playing->track, playing->submitter);
606 eventlog("playing", playing->track,
607 playing->submitter ? playing->submitter : (const char *)0,
608 (const char *)0);
609 /* Maybe add a random track. */
610 add_random_track();
611 /* If there is another track in the queue prepare it now. This could
612 * potentially be a just-added random track. */
613 if(qhead.next != &qhead)
614 prepare(ev, qhead.next);
615 break;
616 }
617}
618
619int playing_is_enabled(void) {
620 const char *s = trackdb_get_global("playing");
621
622 return !s || !strcmp(s, "yes");
623}
624
625void enable_playing(const char *who, ev_source *ev) {
626 trackdb_set_global("playing", "yes", who);
627 /* Add a random track if necessary. */
628 add_random_track();
629 play(ev);
630}
631
632void disable_playing(const char *who) {
633 trackdb_set_global("playing", "no", who);
634}
635
636int random_is_enabled(void) {
637 const char *s = trackdb_get_global("random-play");
638
639 return !s || !strcmp(s, "yes");
640}
641
642void enable_random(const char *who, ev_source *ev) {
643 trackdb_set_global("random-play", "yes", who);
644 add_random_track();
645 play(ev);
646}
647
648void disable_random(const char *who) {
649 trackdb_set_global("random-play", "no", who);
650}
651
652void scratch(const char *who, const char *id) {
653 struct queue_entry *q;
654 struct speaker_message sm;
655 pid_t pid;
656
657 D(("scratch playing=%p state=%d id=%s playing->id=%s",
658 (void *)playing,
659 playing ? playing->state : 0,
660 id ? id : "(none)",
661 playing ? playing->id : "(none)"));
662 if(playing
663 && (playing->state == playing_started
664 || playing->state == playing_paused)
665 && (!id
666 || !strcmp(id, playing->id))) {
667 playing->state = playing_scratched;
668 playing->scratched = who ? xstrdup(who) : 0;
669 if((pid = find_player_pid(playing->id)) > 0) {
670 D(("kill -%d %lu", config->signal, (unsigned long)pid));
671 kill(-pid, config->signal);
672 forget_player_pid(playing->id);
673 } else
674 error(0, "could not find PID for %s", playing->id);
675 if((playing->type & DISORDER_PLAYER_TYPEMASK) == DISORDER_PLAYER_RAW) {
676 memset(&sm, 0, sizeof sm);
677 sm.type = SM_CANCEL;
678 strcpy(sm.id, playing->id);
84aa9f93 679 speaker_send(speaker_fd, &sm);
460b9539 680 D(("sending SM_CANCEL for %s", playing->id));
681 }
682 /* put a scratch track onto the front of the queue (but don't
683 * bother if playing is disabled) */
684 if(playing_is_enabled() && config->scratch.n) {
685 int r = rand() * (double)config->scratch.n / (RAND_MAX + 1.0);
686 q = queue_add(config->scratch.s[r], who, WHERE_START);
687 q->state = playing_isscratch;
688 }
689 notify_scratch(playing->track, playing->submitter, who,
690 time(0) - playing->played);
691 }
692}
693
694void quitting(ev_source *ev) {
695 struct queue_entry *q;
696 pid_t pid;
697
698 /* Don't start anything new */
699 shutting_down = 1;
700 /* Shut down the current player */
701 if(playing) {
702 if((pid = find_player_pid(playing->id)) > 0) {
703 kill(-pid, config->signal);
704 forget_player_pid(playing->id);
705 } else
706 error(0, "could not find PID for %s", playing->id);
707 playing->state = playing_quitting;
708 finished(0);
709 }
710 /* Zap any other players */
711 for(q = qhead.next; q != &qhead; q = q->next)
712 if((pid = find_player_pid(q->id)) > 0) {
713 D(("kill -%d %lu", config->signal, (unsigned long)pid));
714 kill(-pid, config->signal);
715 forget_player_pid(q->id);
716 } else
717 error(0, "could not find PID for %s", q->id);
718 /* Don't need the speaker any more */
719 ev_fd_cancel(ev, ev_read, speaker_fd);
720 xclose(speaker_fd);
721}
722
723int pause_playing(const char *who) {
724 struct speaker_message sm;
725 long played;
726
727 /* Can't pause if already paused or if nothing playing. */
728 if(!playing || paused) return 0;
729 switch(playing->type & DISORDER_PLAYER_TYPEMASK) {
730 case DISORDER_PLAYER_STANDALONE:
731 if(!(playing->type & DISORDER_PLAYER_PAUSES)) {
732 default:
733 error(0, "cannot pause because player is not powerful enough");
734 return -1;
735 }
736 if(play_pause(playing->pl, &played, playing->data)) {
737 error(0, "player indicates it cannot pause");
738 return -1;
739 }
740 time(&playing->lastpaused);
741 playing->uptopause = played;
742 playing->lastresumed = 0;
743 break;
744 case DISORDER_PLAYER_RAW:
745 memset(&sm, 0, sizeof sm);
746 sm.type = SM_PAUSE;
84aa9f93 747 speaker_send(speaker_fd, &sm);
460b9539 748 break;
749 }
750 if(who) info("paused by %s", who);
751 notify_pause(playing->track, who);
752 paused = 1;
753 if(playing->state == playing_started)
754 playing->state = playing_paused;
755 eventlog("state", "pause", (char *)0);
756 return 0;
757}
758
759void resume_playing(const char *who) {
760 struct speaker_message sm;
761
762 if(!paused) return;
763 paused = 0;
764 if(!playing) return;
765 switch(playing->type & DISORDER_PLAYER_TYPEMASK) {
766 case DISORDER_PLAYER_STANDALONE:
767 if(!playing->type & DISORDER_PLAYER_PAUSES) {
768 default:
769 /* Shouldn't happen */
770 return;
771 }
772 play_resume(playing->pl, playing->data);
773 time(&playing->lastresumed);
774 break;
775 case DISORDER_PLAYER_RAW:
776 memset(&sm, 0, sizeof sm);
777 sm.type = SM_RESUME;
84aa9f93 778 speaker_send(speaker_fd, &sm);
460b9539 779 break;
780 }
781 if(who) info("resumed by %s", who);
782 notify_resume(playing->track, who);
783 if(playing->state == playing_paused)
784 playing->state = playing_started;
785 eventlog("state", "resume", (char *)0);
786}
787
788/*
789Local Variables:
790c-basic-offset:2
791comment-column:40
792fill-column:79
793End:
794*/