Commit | Line | Data |
---|---|---|
460b9539 | 1 | /* |
2 | * This file is part of DisOrder. | |
5aff007d | 3 | * Copyright (C) 2004-2008 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 | ||
05b75f8d | 21 | #include "disorder-server.h" |
460b9539 | 22 | #include <ao/ao.h> |
460b9539 | 23 | |
24 | #define SPEAKER "disorder-speaker" | |
25 | ||
26 | struct queue_entry *playing; | |
27 | int paused; | |
28 | ||
29 | static void finished(ev_source *ev); | |
30 | ||
31 | static int speaker_fd = -1; | |
32 | static hash *player_pids; | |
33 | static int shutting_down; | |
34 | ||
35 | static void store_player_pid(const char *id, pid_t pid) { | |
36 | if(!player_pids) player_pids = hash_new(sizeof (pid_t)); | |
37 | hash_add(player_pids, id, &pid, HASH_INSERT_OR_REPLACE); | |
38 | } | |
39 | ||
40 | static pid_t find_player_pid(const char *id) { | |
41 | pid_t *pidp; | |
42 | ||
43 | if(player_pids && (pidp = hash_find(player_pids, id))) return *pidp; | |
44 | return -1; | |
45 | } | |
46 | ||
47 | static void forget_player_pid(const char *id) { | |
48 | if(player_pids) hash_remove(player_pids, id); | |
49 | } | |
50 | ||
51 | /* called when speaker process terminates */ | |
52 | static int speaker_terminated(ev_source attribute((unused)) *ev, | |
53 | pid_t attribute((unused)) pid, | |
54 | int attribute((unused)) status, | |
55 | const struct rusage attribute((unused)) *rusage, | |
56 | void attribute((unused)) *u) { | |
0213d16c | 57 | fatal(0, "speaker subprocess %s", |
2a6c7b79 | 58 | wstat(status)); |
460b9539 | 59 | } |
60 | ||
61 | /* called when speaker process has something to say */ | |
62 | static int speaker_readable(ev_source *ev, int fd, | |
63 | void attribute((unused)) *u) { | |
64 | struct speaker_message sm; | |
84aa9f93 | 65 | int ret = speaker_recv(fd, &sm); |
460b9539 | 66 | |
67 | if(ret < 0) return 0; /* EAGAIN */ | |
68 | if(!ret) { /* EOF */ | |
69 | ev_fd_cancel(ev, ev_read, fd); | |
70 | return 0; | |
71 | } | |
72 | switch(sm.type) { | |
73 | case SM_PAUSED: | |
74 | /* track ID is paused, DATA seconds played */ | |
75 | D(("SM_PAUSED %s %ld", sm.id, sm.data)); | |
76 | playing->sofar = sm.data; | |
77 | break; | |
819f5988 RK |
78 | case SM_FINISHED: /* scratched the playing track */ |
79 | case SM_STILLBORN: /* scratched too early */ | |
80 | case SM_UNKNOWN: /* scratched WAY too early */ | |
2b2a5fed RK |
81 | if(playing && !strcmp(sm.id, playing->id)) |
82 | finished(ev); | |
83 | break; | |
460b9539 | 84 | case SM_PLAYING: |
85 | /* track ID is playing, DATA seconds played */ | |
86 | D(("SM_PLAYING %s %ld", sm.id, sm.data)); | |
87 | playing->sofar = sm.data; | |
88 | break; | |
89 | default: | |
90 | error(0, "unknown message type %d", sm.type); | |
91 | } | |
92 | return 0; | |
93 | } | |
94 | ||
95 | void speaker_setup(ev_source *ev) { | |
4387f694 | 96 | int sp[2]; |
460b9539 | 97 | pid_t pid; |
937be4c0 | 98 | struct speaker_message sm; |
460b9539 | 99 | |
100 | if(socketpair(PF_UNIX, SOCK_DGRAM, 0, sp) < 0) | |
101 | fatal(errno, "error calling socketpair"); | |
460b9539 | 102 | if(!(pid = xfork())) { |
103 | exitfn = _exit; | |
104 | ev_signal_atfork(ev); | |
105 | xdup2(sp[0], 0); | |
106 | xdup2(sp[0], 1); | |
107 | xclose(sp[0]); | |
108 | xclose(sp[1]); | |
460b9539 | 109 | signal(SIGPIPE, SIG_DFL); |
110 | #if 0 | |
111 | execlp("valgrind", "valgrind", SPEAKER, "--config", configfile, | |
0ca6d097 RK |
112 | debugging ? "--debug" : "--no-debug", |
113 | log_default == &log_syslog ? "--syslog" : "--no-syslog", | |
114 | (char *)0); | |
460b9539 | 115 | #else |
116 | execlp(SPEAKER, SPEAKER, "--config", configfile, | |
0ca6d097 RK |
117 | debugging ? "--debug" : "--no-debug", |
118 | log_default == &log_syslog ? "--syslog" : "--no-syslog", | |
119 | (char *)0); | |
460b9539 | 120 | #endif |
121 | fatal(errno, "error invoking %s", SPEAKER); | |
122 | } | |
123 | ev_child(ev, pid, 0, speaker_terminated, 0); | |
124 | speaker_fd = sp[1]; | |
125 | xclose(sp[0]); | |
126 | cloexec(speaker_fd); | |
937be4c0 RK |
127 | /* Wait for the speaker to be ready */ |
128 | speaker_recv(speaker_fd, &sm); | |
129 | nonblock(speaker_fd); | |
e8c92ba7 | 130 | ev_fd(ev, ev_read, speaker_fd, speaker_readable, 0, "speaker read"); |
460b9539 | 131 | } |
132 | ||
133 | void speaker_reload(void) { | |
134 | struct speaker_message sm; | |
135 | ||
136 | memset(&sm, 0, sizeof sm); | |
137 | sm.type = SM_RELOAD; | |
84aa9f93 | 138 | speaker_send(speaker_fd, &sm); |
460b9539 | 139 | } |
140 | ||
460b9539 | 141 | /* Called when the currently playing track finishes playing. This |
142 | * might be because the player finished or because the speaker process | |
143 | * told us so. */ | |
144 | static void finished(ev_source *ev) { | |
145 | D(("finished playing=%p", (void *)playing)); | |
146 | if(!playing) | |
147 | return; | |
148 | if(playing->state != playing_scratched) | |
149 | notify_not_scratched(playing->track, playing->submitter); | |
150 | switch(playing->state) { | |
151 | case playing_ok: | |
152 | eventlog("completed", playing->track, (char *)0); | |
153 | break; | |
154 | case playing_scratched: | |
155 | eventlog("scratched", playing->track, playing->scratched, (char *)0); | |
156 | break; | |
157 | case playing_failed: | |
158 | eventlog("failed", playing->track, wstat(playing->wstat), (char *)0); | |
159 | break; | |
160 | default: | |
161 | break; | |
162 | } | |
163 | queue_played(playing); | |
164 | recent_write(); | |
165 | forget_player_pid(playing->id); | |
166 | playing = 0; | |
49a773eb RK |
167 | /* Try to play something else */ |
168 | /* TODO re-support config->gap? */ | |
169 | if(ev) | |
170 | play(ev); | |
460b9539 | 171 | } |
172 | ||
173 | /* Called when a player terminates. */ | |
174 | static int player_finished(ev_source *ev, | |
175 | pid_t pid, | |
176 | int status, | |
177 | const struct rusage attribute((unused)) *rusage, | |
178 | void *u) { | |
179 | struct queue_entry *q = u; | |
180 | ||
181 | D(("player_finished pid=%lu status=%#x", | |
182 | (unsigned long)pid, (unsigned)status)); | |
183 | /* Record that this PID is dead. If we killed the track we might know this | |
184 | * already, but also it might have exited or crashed. Either way we don't | |
185 | * want to end up signalling it. */ | |
186 | if(pid == find_player_pid(q->id)) | |
187 | forget_player_pid(q->id); | |
188 | switch(q->state) { | |
189 | case playing_unplayed: | |
190 | case playing_random: | |
84aa9f93 RK |
191 | /* If this was a pre-prepared track then either it failed or we |
192 | * deliberately stopped it because it was removed from the queue or moved | |
193 | * down it. So leave it state alone for future use. */ | |
460b9539 | 194 | break; |
195 | default: | |
196 | /* We actually started playing this track. */ | |
197 | if(status) { | |
198 | if(q->state != playing_scratched) | |
199 | q->state = playing_failed; | |
200 | } else | |
201 | q->state = playing_ok; | |
202 | break; | |
203 | } | |
204 | /* Regardless we always report and record the status and do cleanup for | |
205 | * prefork calls. */ | |
206 | if(status) | |
207 | error(0, "player for %s %s", q->track, wstat(status)); | |
208 | if(q->type & DISORDER_PLAYER_PREFORK) | |
209 | play_cleanup(q->pl, q->data); | |
210 | q->wstat = status; | |
211 | /* If this actually was the current track, and does not use the speaker | |
212 | * process, then it must have finished. For raw-output players we will get a | |
213 | * separate notification from the speaker process. */ | |
214 | if(q == playing | |
215 | && (q->type & DISORDER_PLAYER_TYPEMASK) != DISORDER_PLAYER_RAW) | |
216 | finished(ev); | |
217 | return 0; | |
218 | } | |
219 | ||
220 | /* Find the player for Q */ | |
221 | static int find_player(const struct queue_entry *q) { | |
222 | int n; | |
223 | ||
224 | for(n = 0; n < config->player.n; ++n) | |
225 | if(fnmatch(config->player.s[n].s[0], q->track, 0) == 0) | |
226 | break; | |
227 | if(n >= config->player.n) | |
228 | return -1; | |
229 | else | |
230 | return n; | |
231 | } | |
232 | ||
233 | /* Return values from start() */ | |
3149c1e2 RK |
234 | #define START_OK 0 /**< @brief Succeeded. */ |
235 | #define START_HARDFAIL 1 /**< @brief Track is broken. */ | |
236 | #define START_SOFTFAIL 2 /**< @brief Track OK, system (temporarily?) broken */ | |
460b9539 | 237 | |
84aa9f93 RK |
238 | /** @brief Play or prepare @p q |
239 | * @param ev Event loop | |
240 | * @param q Track to play/prepare | |
241 | * @param prepare_only If true, only prepares track | |
3149c1e2 | 242 | * @return @ref START_OK, @ref START_HARDFAIL or @ref START_SOFTFAIL |
84aa9f93 | 243 | */ |
460b9539 | 244 | static int start(ev_source *ev, |
245 | struct queue_entry *q, | |
84aa9f93 | 246 | int prepare_only) { |
460b9539 | 247 | int n, lfd; |
248 | const char *p; | |
84aa9f93 | 249 | int np[2], sfd; |
460b9539 | 250 | struct speaker_message sm; |
251 | char buffer[64]; | |
252 | int optc; | |
253 | ao_sample_format format; | |
254 | ao_device *device; | |
255 | int retries; | |
256 | struct timespec ts; | |
257 | const char *waitdevice = 0; | |
258 | const char *const *optv; | |
6d2d327c | 259 | pid_t pid, npid; |
84aa9f93 RK |
260 | struct sockaddr_un addr; |
261 | uint32_t l; | |
460b9539 | 262 | |
263 | memset(&sm, 0, sizeof sm); | |
84aa9f93 | 264 | D(("start %s %d", q->id, prepare_only)); |
66bb2e02 RK |
265 | if(q->prepared) { |
266 | /* The track is alraedy prepared */ | |
267 | if(!prepare_only) { | |
268 | /* We want to run it, since it's prepared the answer is to tell the | |
269 | * speaker to set it off */ | |
270 | strcpy(sm.id, q->id); | |
271 | sm.type = SM_PLAY; | |
272 | speaker_send(speaker_fd, &sm); | |
273 | D(("sent SM_PLAY for %s", sm.id)); | |
274 | } | |
460b9539 | 275 | return START_OK; |
276 | } | |
277 | /* Find the player plugin. */ | |
278 | if((n = find_player(q)) < 0) return START_HARDFAIL; | |
279 | if(!(q->pl = open_plugin(config->player.s[n].s[1], 0))) | |
280 | return START_HARDFAIL; | |
281 | q->type = play_get_type(q->pl); | |
282 | /* Can't prepare non-raw tracks. */ | |
84aa9f93 | 283 | if(prepare_only |
460b9539 | 284 | && (q->type & DISORDER_PLAYER_TYPEMASK) != DISORDER_PLAYER_RAW) |
285 | return START_OK; | |
286 | /* Call the prefork function. */ | |
287 | p = trackdb_rawpath(q->track); | |
288 | if(q->type & DISORDER_PLAYER_PREFORK) | |
289 | if(!(q->data = play_prefork(q->pl, p))) { | |
290 | error(0, "prefork function for %s failed", q->track); | |
291 | return START_HARDFAIL; | |
292 | } | |
293 | /* Use the second arg as the tag if available (it's probably a command name), | |
294 | * otherwise the module name. */ | |
e99d42b1 | 295 | if(!isatty(2)) |
296 | lfd = logfd(ev, (config->player.s[n].s[2] | |
297 | ? config->player.s[n].s[2] : config->player.s[n].s[1])); | |
298 | else | |
299 | lfd = -1; | |
460b9539 | 300 | optc = config->player.s[n].n - 2; |
301 | optv = (void *)&config->player.s[n].s[2]; | |
302 | while(optc > 0 && optv[0][0] == '-') { | |
303 | if(!strcmp(optv[0], "--")) { | |
304 | ++optv; | |
305 | --optc; | |
306 | break; | |
307 | } | |
308 | if(!strcmp(optv[0], "--wait-for-device") | |
309 | || !strncmp(optv[0], "--wait-for-device=", 18)) { | |
310 | if((waitdevice = strchr(optv[0], '='))) { | |
311 | ++waitdevice; | |
312 | } else | |
313 | waitdevice = ""; /* use default */ | |
314 | ++optv; | |
315 | --optc; | |
316 | } else { | |
317 | error(0, "unknown option %s", optv[0]); | |
318 | return START_HARDFAIL; | |
319 | } | |
320 | } | |
321 | switch(pid = fork()) { | |
322 | case 0: /* child */ | |
323 | exitfn = _exit; | |
ba3d1d36 | 324 | progname = "disorderd-fork"; |
460b9539 | 325 | ev_signal_atfork(ev); |
326 | signal(SIGPIPE, SIG_DFL); | |
e99d42b1 | 327 | if(lfd != -1) { |
328 | xdup2(lfd, 1); | |
329 | xdup2(lfd, 2); | |
330 | xclose(lfd); /* tidy up */ | |
331 | } | |
460b9539 | 332 | setpgid(0, 0); |
333 | if((q->type & DISORDER_PLAYER_TYPEMASK) == DISORDER_PLAYER_RAW) { | |
84aa9f93 RK |
334 | /* "Raw" format players always have their output send down a pipe |
335 | * to the disorder-normalize process. This will connect to the | |
336 | * speaker process to actually play the audio data. | |
6d2d327c RK |
337 | */ |
338 | /* np will be the pipe to disorder-normalize */ | |
339 | if(socketpair(PF_UNIX, SOCK_STREAM, 0, np) < 0) | |
340 | fatal(errno, "error calling socketpair"); | |
ba3d1d36 RK |
341 | /* Beware of the Leopard! On OS X 10.5.x, the order of the shutdown |
342 | * calls here DOES MATTER. If you do the SHUT_WR first then the SHUT_RD | |
af7a85b7 | 343 | * fails with "Socket is not connected". I think this is a bug but |
ba3d1d36 RK |
344 | * provided implementors either don't care about the order or all agree |
345 | * about the order, choosing the reliable order is an adequate | |
346 | * workaround. */ | |
6d2d327c | 347 | xshutdown(np[1], SHUT_RD); /* decoder writes to np[1] */ |
ba3d1d36 | 348 | xshutdown(np[0], SHUT_WR); /* normalize reads from np[0] */ |
937be4c0 RK |
349 | blocking(np[0]); |
350 | blocking(np[1]); | |
6d2d327c RK |
351 | /* Start disorder-normalize */ |
352 | if(!(npid = xfork())) { | |
353 | if(!xfork()) { | |
84aa9f93 RK |
354 | /* Connect to the speaker process */ |
355 | memset(&addr, 0, sizeof addr); | |
356 | addr.sun_family = AF_UNIX; | |
357 | snprintf(addr.sun_path, sizeof addr.sun_path, | |
85cb23d7 | 358 | "%s/speaker/socket", config->home); |
84aa9f93 | 359 | sfd = xsocket(PF_UNIX, SOCK_STREAM, 0); |
dc450d30 | 360 | if(connect(sfd, (const struct sockaddr *)&addr, sizeof addr) < 0) |
84aa9f93 RK |
361 | fatal(errno, "connecting to %s", addr.sun_path); |
362 | l = strlen(q->id); | |
363 | if(write(sfd, &l, sizeof l) < 0 | |
364 | || write(sfd, q->id, l) < 0) | |
365 | fatal(errno, "writing to %s", addr.sun_path); | |
366 | /* Await the ack */ | |
367 | read(sfd, &l, 1); | |
368 | /* Plumbing */ | |
6d2d327c | 369 | xdup2(np[0], 0); |
84aa9f93 | 370 | xdup2(sfd, 1); |
6d2d327c RK |
371 | xclose(np[0]); |
372 | xclose(np[1]); | |
84aa9f93 RK |
373 | xclose(sfd); |
374 | /* Ask the speaker to actually start playing the track; we do it here | |
375 | * so it's definitely after ack. */ | |
376 | if(!prepare_only) { | |
377 | strcpy(sm.id, q->id); | |
378 | sm.type = SM_PLAY; | |
379 | speaker_send(speaker_fd, &sm); | |
380 | D(("sent SM_PLAY for %s", sm.id)); | |
381 | } | |
4387f694 RK |
382 | /* TODO stderr shouldn't be redirected for disorder-normalize |
383 | * (but it should be for play_track() */ | |
b44ca625 RK |
384 | execlp("disorder-normalize", "disorder-normalize", |
385 | log_default == &log_syslog ? "--syslog" : "--no-syslog", | |
816e6088 | 386 | "--config", configfile, |
b44ca625 | 387 | (char *)0); |
6d2d327c | 388 | fatal(errno, "executing disorder-normalize"); |
84aa9f93 | 389 | /* end of the innermost fork */ |
6d2d327c RK |
390 | } |
391 | _exit(0); | |
84aa9f93 | 392 | /* end of the middle fork */ |
6d2d327c | 393 | } |
84aa9f93 RK |
394 | /* Wait for the middle fork to finish */ |
395 | while(waitpid(npid, &n, 0) < 0 && errno == EINTR) | |
396 | ; | |
460b9539 | 397 | /* Pass the file descriptor to the driver in an environment |
398 | * variable. */ | |
6d2d327c | 399 | snprintf(buffer, sizeof buffer, "DISORDER_RAW_FD=%d", np[1]); |
460b9539 | 400 | if(putenv(buffer) < 0) |
401 | fatal(errno, "error calling putenv"); | |
6d2d327c | 402 | /* Close all the FDs we don't need */ |
6d2d327c | 403 | xclose(np[0]); |
460b9539 | 404 | } |
405 | if(waitdevice) { | |
406 | ao_initialize(); | |
407 | if(*waitdevice) { | |
408 | n = ao_driver_id(waitdevice); | |
409 | if(n == -1) | |
410 | fatal(0, "invalid libao driver: %s", optv[0]); | |
411 | } else | |
412 | n = ao_default_driver_id(); | |
413 | /* Make up a format. */ | |
414 | memset(&format, 0, sizeof format); | |
415 | format.bits = 8; | |
416 | format.rate = 44100; | |
417 | format.channels = 1; | |
418 | format.byte_format = AO_FMT_NATIVE; | |
419 | retries = 20; | |
420 | ts.tv_sec = 0; | |
421 | ts.tv_nsec = 100000000; /* 0.1s */ | |
422 | while((device = ao_open_live(n, &format, 0)) == 0 && retries-- > 0) | |
423 | nanosleep(&ts, 0); | |
424 | if(device) | |
425 | ao_close(device); | |
426 | } | |
427 | play_track(q->pl, | |
428 | optv, optc, | |
429 | p, | |
430 | q->track); | |
431 | _exit(0); | |
432 | case -1: /* error */ | |
433 | error(errno, "error calling fork"); | |
434 | if(q->type & DISORDER_PLAYER_PREFORK) | |
435 | play_cleanup(q->pl, q->data); /* else would leak */ | |
e99d42b1 | 436 | if(lfd != -1) |
437 | xclose(lfd); | |
460b9539 | 438 | return START_SOFTFAIL; |
439 | } | |
440 | store_player_pid(q->id, pid); | |
66bb2e02 | 441 | q->prepared = 1; |
e99d42b1 | 442 | if(lfd != -1) |
443 | xclose(lfd); | |
460b9539 | 444 | setpgid(pid, pid); |
445 | ev_child(ev, pid, 0, player_finished, q); | |
446 | D(("player subprocess ID %lu", (unsigned long)pid)); | |
447 | return START_OK; | |
448 | } | |
449 | ||
450 | int prepare(ev_source *ev, | |
451 | struct queue_entry *q) { | |
452 | int n; | |
453 | ||
454 | /* Find the player plugin */ | |
455 | if(find_player_pid(q->id) > 0) return 0; /* Already going. */ | |
456 | if((n = find_player(q)) < 0) return -1; /* No player */ | |
457 | q->pl = open_plugin(config->player.s[n].s[1], 0); /* No player */ | |
458 | q->type = play_get_type(q->pl); | |
459 | if((q->type & DISORDER_PLAYER_TYPEMASK) != DISORDER_PLAYER_RAW) | |
460 | return 0; /* Not a raw player */ | |
84aa9f93 | 461 | return start(ev, q, 1/*prepare_only*/); /* Prepare it */ |
460b9539 | 462 | } |
463 | ||
464 | void abandon(ev_source attribute((unused)) *ev, | |
465 | struct queue_entry *q) { | |
466 | struct speaker_message sm; | |
467 | pid_t pid = find_player_pid(q->id); | |
468 | ||
469 | if(pid < 0) return; /* Not prepared. */ | |
470 | if((q->type & DISORDER_PLAYER_TYPEMASK) != DISORDER_PLAYER_RAW) | |
471 | return; /* Not a raw player. */ | |
472 | /* Terminate the player. */ | |
473 | kill(-pid, config->signal); | |
474 | forget_player_pid(q->id); | |
475 | /* Cancel the track. */ | |
476 | memset(&sm, 0, sizeof sm); | |
477 | sm.type = SM_CANCEL; | |
478 | strcpy(sm.id, q->id); | |
84aa9f93 | 479 | speaker_send(speaker_fd, &sm); |
460b9539 | 480 | } |
481 | ||
49a773eb RK |
482 | /** @brief Called with a new random track |
483 | * @param track Track name | |
484 | */ | |
485 | static void chosen_random_track(ev_source *ev, | |
486 | const char *track) { | |
487 | struct queue_entry *q; | |
488 | ||
489 | if(!track) | |
490 | return; | |
491 | /* Add the track to the queue */ | |
492 | q = queue_add(track, 0, WHERE_END); | |
493 | q->state = playing_random; | |
494 | D(("picked %p (%s) at random", (void *)q, q->track)); | |
495 | queue_write(); | |
496 | /* Maybe a track can now be played */ | |
497 | play(ev); | |
498 | } | |
499 | ||
500 | /** @brief Maybe add a randomly chosen track | |
501 | * @param ev Event loop | |
502 | */ | |
503 | void add_random_track(ev_source *ev) { | |
460b9539 | 504 | struct queue_entry *q; |
459d4402 | 505 | long qlen = 0; |
460b9539 | 506 | |
507 | /* If random play is not enabled then do nothing. */ | |
508 | if(shutting_down || !random_is_enabled()) | |
49a773eb | 509 | return; |
459d4402 | 510 | /* Count how big the queue is */ |
460b9539 | 511 | for(q = qhead.next; q != &qhead; q = q->next) |
459d4402 | 512 | ++qlen; |
49a773eb RK |
513 | /* If it's smaller than the desired size then add a track */ |
514 | if(qlen < config->queue_pad) | |
515 | trackdb_request_random(ev, chosen_random_track); | |
460b9539 | 516 | } |
517 | ||
518 | /* try to play a track */ | |
519 | void play(ev_source *ev) { | |
520 | struct queue_entry *q; | |
521 | int random_enabled = random_is_enabled(); | |
522 | ||
523 | D(("play playing=%p", (void *)playing)); | |
524 | if(shutting_down || playing || !playing_is_enabled()) return; | |
49a773eb | 525 | /* See if there's anything to play */ |
460b9539 | 526 | if(qhead.next == &qhead) { |
49a773eb RK |
527 | /* Queue is empty. We could just wait around since there are periodic |
528 | * attempts to add a random track anyway. However they are rarer than | |
529 | * attempts to force a track so we initiate one now. */ | |
530 | add_random_track(ev); | |
531 | return; | |
460b9539 | 532 | } |
49a773eb | 533 | /* There must be at least one track in the queue. */ |
460b9539 | 534 | q = qhead.next; |
535 | /* If random play is disabled but the track is a random one then don't play | |
536 | * it. play() will be called again when random play is re-enabled. */ | |
537 | if(!random_enabled && q->state == playing_random) | |
538 | return; | |
539 | D(("taken %p (%s) from queue", (void *)q, q->track)); | |
540 | /* Try to start playing. */ | |
84aa9f93 | 541 | switch(start(ev, q, 0/*!prepare_only*/)) { |
460b9539 | 542 | case START_HARDFAIL: |
543 | if(q == qhead.next) { | |
544 | queue_remove(q, 0); /* Abandon this track. */ | |
545 | queue_played(q); | |
546 | recent_write(); | |
547 | } | |
49a773eb RK |
548 | /* Oh well, try the next one */ |
549 | play(ev); | |
460b9539 | 550 | break; |
551 | case START_SOFTFAIL: | |
49a773eb | 552 | /* We'll try the same track again shortly. */ |
460b9539 | 553 | break; |
554 | case START_OK: | |
555 | if(q == qhead.next) { | |
556 | queue_remove(q, 0); | |
557 | queue_write(); | |
558 | } | |
559 | playing = q; | |
560 | time(&playing->played); | |
561 | playing->state = playing_started; | |
562 | notify_play(playing->track, playing->submitter); | |
563 | eventlog("playing", playing->track, | |
564 | playing->submitter ? playing->submitter : (const char *)0, | |
565 | (const char *)0); | |
566 | /* Maybe add a random track. */ | |
49a773eb | 567 | add_random_track(ev); |
460b9539 | 568 | /* If there is another track in the queue prepare it now. This could |
569 | * potentially be a just-added random track. */ | |
570 | if(qhead.next != &qhead) | |
571 | prepare(ev, qhead.next); | |
572 | break; | |
573 | } | |
574 | } | |
575 | ||
576 | int playing_is_enabled(void) { | |
577 | const char *s = trackdb_get_global("playing"); | |
578 | ||
579 | return !s || !strcmp(s, "yes"); | |
580 | } | |
581 | ||
582 | void enable_playing(const char *who, ev_source *ev) { | |
583 | trackdb_set_global("playing", "yes", who); | |
584 | /* Add a random track if necessary. */ | |
49a773eb | 585 | add_random_track(ev); |
460b9539 | 586 | play(ev); |
587 | } | |
588 | ||
589 | void disable_playing(const char *who) { | |
590 | trackdb_set_global("playing", "no", who); | |
591 | } | |
592 | ||
593 | int random_is_enabled(void) { | |
594 | const char *s = trackdb_get_global("random-play"); | |
595 | ||
596 | return !s || !strcmp(s, "yes"); | |
597 | } | |
598 | ||
599 | void enable_random(const char *who, ev_source *ev) { | |
600 | trackdb_set_global("random-play", "yes", who); | |
49a773eb | 601 | add_random_track(ev); |
460b9539 | 602 | play(ev); |
603 | } | |
604 | ||
605 | void disable_random(const char *who) { | |
606 | trackdb_set_global("random-play", "no", who); | |
607 | } | |
608 | ||
609 | void scratch(const char *who, const char *id) { | |
610 | struct queue_entry *q; | |
611 | struct speaker_message sm; | |
612 | pid_t pid; | |
613 | ||
614 | D(("scratch playing=%p state=%d id=%s playing->id=%s", | |
615 | (void *)playing, | |
616 | playing ? playing->state : 0, | |
617 | id ? id : "(none)", | |
618 | playing ? playing->id : "(none)")); | |
619 | if(playing | |
620 | && (playing->state == playing_started | |
621 | || playing->state == playing_paused) | |
622 | && (!id | |
623 | || !strcmp(id, playing->id))) { | |
624 | playing->state = playing_scratched; | |
625 | playing->scratched = who ? xstrdup(who) : 0; | |
626 | if((pid = find_player_pid(playing->id)) > 0) { | |
627 | D(("kill -%d %lu", config->signal, (unsigned long)pid)); | |
628 | kill(-pid, config->signal); | |
629 | forget_player_pid(playing->id); | |
630 | } else | |
631 | error(0, "could not find PID for %s", playing->id); | |
632 | if((playing->type & DISORDER_PLAYER_TYPEMASK) == DISORDER_PLAYER_RAW) { | |
633 | memset(&sm, 0, sizeof sm); | |
634 | sm.type = SM_CANCEL; | |
635 | strcpy(sm.id, playing->id); | |
84aa9f93 | 636 | speaker_send(speaker_fd, &sm); |
460b9539 | 637 | D(("sending SM_CANCEL for %s", playing->id)); |
638 | } | |
639 | /* put a scratch track onto the front of the queue (but don't | |
640 | * bother if playing is disabled) */ | |
641 | if(playing_is_enabled() && config->scratch.n) { | |
642 | int r = rand() * (double)config->scratch.n / (RAND_MAX + 1.0); | |
643 | q = queue_add(config->scratch.s[r], who, WHERE_START); | |
644 | q->state = playing_isscratch; | |
645 | } | |
646 | notify_scratch(playing->track, playing->submitter, who, | |
647 | time(0) - playing->played); | |
648 | } | |
649 | } | |
650 | ||
651 | void quitting(ev_source *ev) { | |
652 | struct queue_entry *q; | |
653 | pid_t pid; | |
654 | ||
655 | /* Don't start anything new */ | |
656 | shutting_down = 1; | |
657 | /* Shut down the current player */ | |
658 | if(playing) { | |
659 | if((pid = find_player_pid(playing->id)) > 0) { | |
660 | kill(-pid, config->signal); | |
661 | forget_player_pid(playing->id); | |
662 | } else | |
663 | error(0, "could not find PID for %s", playing->id); | |
664 | playing->state = playing_quitting; | |
665 | finished(0); | |
666 | } | |
667 | /* Zap any other players */ | |
668 | for(q = qhead.next; q != &qhead; q = q->next) | |
669 | if((pid = find_player_pid(q->id)) > 0) { | |
670 | D(("kill -%d %lu", config->signal, (unsigned long)pid)); | |
671 | kill(-pid, config->signal); | |
672 | forget_player_pid(q->id); | |
673 | } else | |
674 | error(0, "could not find PID for %s", q->id); | |
675 | /* Don't need the speaker any more */ | |
676 | ev_fd_cancel(ev, ev_read, speaker_fd); | |
677 | xclose(speaker_fd); | |
678 | } | |
679 | ||
680 | int pause_playing(const char *who) { | |
681 | struct speaker_message sm; | |
682 | long played; | |
683 | ||
684 | /* Can't pause if already paused or if nothing playing. */ | |
685 | if(!playing || paused) return 0; | |
686 | switch(playing->type & DISORDER_PLAYER_TYPEMASK) { | |
687 | case DISORDER_PLAYER_STANDALONE: | |
688 | if(!(playing->type & DISORDER_PLAYER_PAUSES)) { | |
689 | default: | |
690 | error(0, "cannot pause because player is not powerful enough"); | |
691 | return -1; | |
692 | } | |
693 | if(play_pause(playing->pl, &played, playing->data)) { | |
694 | error(0, "player indicates it cannot pause"); | |
695 | return -1; | |
696 | } | |
697 | time(&playing->lastpaused); | |
698 | playing->uptopause = played; | |
699 | playing->lastresumed = 0; | |
700 | break; | |
701 | case DISORDER_PLAYER_RAW: | |
702 | memset(&sm, 0, sizeof sm); | |
703 | sm.type = SM_PAUSE; | |
84aa9f93 | 704 | speaker_send(speaker_fd, &sm); |
460b9539 | 705 | break; |
706 | } | |
707 | if(who) info("paused by %s", who); | |
708 | notify_pause(playing->track, who); | |
709 | paused = 1; | |
710 | if(playing->state == playing_started) | |
711 | playing->state = playing_paused; | |
712 | eventlog("state", "pause", (char *)0); | |
713 | return 0; | |
714 | } | |
715 | ||
716 | void resume_playing(const char *who) { | |
717 | struct speaker_message sm; | |
718 | ||
719 | if(!paused) return; | |
720 | paused = 0; | |
721 | if(!playing) return; | |
722 | switch(playing->type & DISORDER_PLAYER_TYPEMASK) { | |
723 | case DISORDER_PLAYER_STANDALONE: | |
724 | if(!playing->type & DISORDER_PLAYER_PAUSES) { | |
725 | default: | |
726 | /* Shouldn't happen */ | |
727 | return; | |
728 | } | |
729 | play_resume(playing->pl, playing->data); | |
730 | time(&playing->lastresumed); | |
731 | break; | |
732 | case DISORDER_PLAYER_RAW: | |
733 | memset(&sm, 0, sizeof sm); | |
734 | sm.type = SM_RESUME; | |
84aa9f93 | 735 | speaker_send(speaker_fd, &sm); |
460b9539 | 736 | break; |
737 | } | |
738 | if(who) info("resumed by %s", who); | |
739 | notify_resume(playing->track, who); | |
740 | if(playing->state == playing_paused) | |
741 | playing->state = playing_started; | |
742 | eventlog("state", "resume", (char *)0); | |
743 | } | |
744 | ||
745 | /* | |
746 | Local Variables: | |
747 | c-basic-offset:2 | |
748 | comment-column:40 | |
749 | fill-column:79 | |
750 | End: | |
751 | */ |