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[disorder] / server / speaker.c
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460b9539 1/*
2 * This file is part of DisOrder
dea8f8aa 3 * Copyright (C) 2005, 2006, 2007 Richard Kettlewell
313acc77 4 * Portions (C) 2007 Mark Wooding
460b9539 5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
19 * USA
20 */
1674096e 21/** @file server/speaker.c
cf714d85 22 * @brief Speaker process
1674096e 23 *
24 * This program is responsible for transmitting a single coherent audio stream
25 * to its destination (over the network, to some sound API, to some
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26 * subprocess). It receives connections from decoders (or rather from the
27 * process that is about to become disorder-normalize) and plays them in the
28 * right order.
1674096e 29 *
795192f4 30 * @b Encodings. For the <a href="http://www.alsa-project.org/">ALSA</a> API,
31 * 8- and 16- bit stereo and mono are supported, with any sample rate (within
32 * the limits that ALSA can deal with.)
1674096e 33 *
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34 * Inbound data is expected to match @c config->sample_format. In normal use
35 * this is arranged by the @c disorder-normalize program (see @ref
36 * server/normalize.c).
1674096e 37 *
795192f4 38 * @b Garbage @b Collection. This program deliberately does not use the
39 * garbage collector even though it might be convenient to do so. This is for
40 * two reasons. Firstly some sound APIs use thread threads and we do not want
41 * to have to deal with potential interactions between threading and garbage
42 * collection. Secondly this process needs to be able to respond quickly and
43 * this is not compatible with the collector hanging the program even
44 * relatively briefly.
45 *
46 * @b Units. This program thinks at various times in three different units.
47 * Bytes are obvious. A sample is a single sample on a single channel. A
48 * frame is several samples on different channels at the same point in time.
49 * So (for instance) a 16-bit stereo frame is 4 bytes and consists of a pair of
50 * 2-byte samples.
1674096e 51 */
460b9539 52
53#include <config.h>
54#include "types.h"
55
56#include <getopt.h>
57#include <stdio.h>
58#include <stdlib.h>
59#include <locale.h>
60#include <syslog.h>
61#include <unistd.h>
62#include <errno.h>
63#include <ao/ao.h>
64#include <string.h>
65#include <assert.h>
66#include <sys/select.h>
9d5da576 67#include <sys/wait.h>
460b9539 68#include <time.h>
8023f60b 69#include <fcntl.h>
70#include <poll.h>
84aa9f93 71#include <sys/un.h>
460b9539 72
73#include "configuration.h"
74#include "syscalls.h"
75#include "log.h"
76#include "defs.h"
77#include "mem.h"
ea410ba1 78#include "speaker-protocol.h"
460b9539 79#include "user.h"
cf714d85 80#include "speaker.h"
85cb23d7 81#include "printf.h"
460b9539 82
cf714d85 83/** @brief Linked list of all prepared tracks */
84struct track *tracks;
e83d0967 85
cf714d85 86/** @brief Playing track, or NULL */
87struct track *playing;
460b9539 88
1c3f1e73 89/** @brief Number of bytes pre frame */
6d2d327c 90size_t bpf;
1c3f1e73 91
92/** @brief Array of file descriptors for poll() */
93struct pollfd fds[NFDS];
94
95/** @brief Next free slot in @ref fds */
96int fdno;
97
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98/** @brief Listen socket */
99static int listenfd;
100
460b9539 101static time_t last_report; /* when we last reported */
102static int paused; /* pause status */
50ae38dd 103
5a7c42a8 104/** @brief The current device state */
105enum device_states device_state;
50ae38dd 106
55f35f2d 107/** @brief Set when idled
108 *
109 * This is set when the sound device is deliberately closed by idle().
55f35f2d 110 */
1c3f1e73 111int idled;
460b9539 112
29601377 113/** @brief Selected backend */
114static const struct speaker_backend *backend;
115
460b9539 116static const struct option options[] = {
117 { "help", no_argument, 0, 'h' },
118 { "version", no_argument, 0, 'V' },
119 { "config", required_argument, 0, 'c' },
120 { "debug", no_argument, 0, 'd' },
121 { "no-debug", no_argument, 0, 'D' },
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122 { "syslog", no_argument, 0, 's' },
123 { "no-syslog", no_argument, 0, 'S' },
460b9539 124 { 0, 0, 0, 0 }
125};
126
127/* Display usage message and terminate. */
128static void help(void) {
129 xprintf("Usage:\n"
130 " disorder-speaker [OPTIONS]\n"
131 "Options:\n"
132 " --help, -h Display usage message\n"
133 " --version, -V Display version number\n"
134 " --config PATH, -c PATH Set configuration file\n"
135 " --debug, -d Turn on debugging\n"
0ca6d097 136 " --[no-]syslog Force logging\n"
460b9539 137 "\n"
138 "Speaker process for DisOrder. Not intended to be run\n"
139 "directly.\n");
140 xfclose(stdout);
141 exit(0);
142}
143
144/* Display version number and terminate. */
145static void version(void) {
a05e4467 146 xprintf("%s", disorder_version_string);
460b9539 147 xfclose(stdout);
148 exit(0);
149}
150
1674096e 151/** @brief Return the number of bytes per frame in @p format */
6d2d327c 152static size_t bytes_per_frame(const struct stream_header *format) {
460b9539 153 return format->channels * format->bits / 8;
154}
155
1674096e 156/** @brief Find track @p id, maybe creating it if not found */
460b9539 157static struct track *findtrack(const char *id, int create) {
158 struct track *t;
159
160 D(("findtrack %s %d", id, create));
161 for(t = tracks; t && strcmp(id, t->id); t = t->next)
162 ;
163 if(!t && create) {
164 t = xmalloc(sizeof *t);
165 t->next = tracks;
166 strcpy(t->id, id);
167 t->fd = -1;
168 tracks = t;
460b9539 169 }
170 return t;
171}
172
1674096e 173/** @brief Remove track @p id (but do not destroy it) */
460b9539 174static struct track *removetrack(const char *id) {
175 struct track *t, **tt;
176
177 D(("removetrack %s", id));
178 for(tt = &tracks; (t = *tt) && strcmp(id, t->id); tt = &t->next)
179 ;
180 if(t)
181 *tt = t->next;
182 return t;
183}
184
1674096e 185/** @brief Destroy a track */
460b9539 186static void destroy(struct track *t) {
187 D(("destroy %s", t->id));
188 if(t->fd != -1) xclose(t->fd);
460b9539 189 free(t);
190}
191
1674096e 192/** @brief Read data into a sample buffer
193 * @param t Pointer to track
194 * @return 0 on success, -1 on EOF
195 *
55f35f2d 196 * This is effectively the read callback on @c t->fd. It is called from the
197 * main loop whenever the track's file descriptor is readable, assuming the
198 * buffer has not reached the maximum allowed occupancy.
1674096e 199 */
f5a03f58 200static int speaker_fill(struct track *t) {
460b9539 201 size_t where, left;
202 int n;
203
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204 D(("fill %s: eof=%d used=%zu",
205 t->id, t->eof, t->used));
460b9539 206 if(t->eof) return -1;
6d2d327c 207 if(t->used < sizeof t->buffer) {
460b9539 208 /* there is room left in the buffer */
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209 where = (t->start + t->used) % sizeof t->buffer;
210 /* Get as much data as we can */
211 if(where >= t->start) left = (sizeof t->buffer) - where;
212 else left = t->start - where;
460b9539 213 do {
214 n = read(t->fd, t->buffer + where, left);
215 } while(n < 0 && errno == EINTR);
216 if(n < 0) {
217 if(errno != EAGAIN) fatal(errno, "error reading sample stream");
218 return 0;
219 }
220 if(n == 0) {
221 D(("fill %s: eof detected", t->id));
222 t->eof = 1;
f5a03f58 223 t->playable = 1;
460b9539 224 return -1;
225 }
226 t->used += n;
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227 if(t->used == sizeof t->buffer)
228 t->playable = 1;
460b9539 229 }
230 return 0;
231}
232
55f35f2d 233/** @brief Close the sound device
234 *
235 * This is called to deactivate the output device when pausing, and also by the
236 * ALSA backend when changing encoding (in which case the sound device will be
237 * immediately reactivated).
238 */
460b9539 239static void idle(void) {
460b9539 240 D(("idle"));
5a7c42a8 241 if(backend->deactivate)
b5a99ad0 242 backend->deactivate();
5a7c42a8 243 else
244 device_state = device_closed;
e83d0967 245 idled = 1;
460b9539 246}
247
1674096e 248/** @brief Abandon the current track */
1c3f1e73 249void abandon(void) {
460b9539 250 struct speaker_message sm;
251
252 D(("abandon"));
253 memset(&sm, 0, sizeof sm);
254 sm.type = SM_FINISHED;
255 strcpy(sm.id, playing->id);
84aa9f93 256 speaker_send(1, &sm);
460b9539 257 removetrack(playing->id);
258 destroy(playing);
259 playing = 0;
1c6e6a61 260}
261
1674096e 262/** @brief Enable sound output
263 *
264 * Makes sure the sound device is open and has the right sample format. Return
265 * 0 on success and -1 on error.
266 */
5a7c42a8 267static void activate(void) {
6d2d327c 268 if(backend->activate)
5a7c42a8 269 backend->activate();
6d2d327c 270 else
5a7c42a8 271 device_state = device_open;
460b9539 272}
273
55f35f2d 274/** @brief Check whether the current track has finished
275 *
276 * The current track is determined to have finished either if the input stream
277 * eded before the format could be determined (i.e. it is malformed) or the
278 * input is at end of file and there is less than a frame left unplayed. (So
279 * it copes with decoders that crash mid-frame.)
280 */
460b9539 281static void maybe_finished(void) {
282 if(playing
283 && playing->eof
6d2d327c 284 && playing->used < bytes_per_frame(&config->sample_format))
460b9539 285 abandon();
286}
287
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288/** @brief Return nonzero if we want to play some audio
289 *
290 * We want to play audio if there is a current track; and it is not paused; and
291 * it is playable according to the rules for @ref track::playable.
292 */
293static int playable(void) {
294 return playing
295 && !paused
296 && playing->playable;
297}
298
5a7c42a8 299/** @brief Play up to @p frames frames of audio
300 *
301 * It is always safe to call this function.
302 * - If @ref playing is 0 then it will just return
303 * - If @ref paused is non-0 then it will just return
304 * - If @ref device_state != @ref device_open then it will call activate() and
305 * return if it it fails.
306 * - If there is not enough audio to play then it play what is available.
307 *
308 * If there are not enough frames to play then whatever is available is played
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309 * instead. It is up to mainloop() to ensure that speaker_play() is not called
310 * when unreasonably only an small amounts of data is available to play.
5a7c42a8 311 */
dac25ef9 312static void speaker_play(size_t frames) {
3c68b773 313 size_t avail_frames, avail_bytes, written_frames;
9d5da576 314 ssize_t written_bytes;
460b9539 315
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316 /* Make sure there's a track to play and it is not paused */
317 if(!playable())
460b9539 318 return;
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319 /* Make sure the output device is open */
320 if(device_state != device_open) {
5a7c42a8 321 activate();
322 if(device_state != device_open)
323 return;
460b9539 324 }
6d2d327c 325 D(("play: play %zu/%zu%s %dHz %db %dc", frames, playing->used / bpf,
460b9539 326 playing->eof ? " EOF" : "",
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327 config->sample_format.rate,
328 config->sample_format.bits,
329 config->sample_format.channels));
460b9539 330 /* Figure out how many frames there are available to write */
6d2d327c 331 if(playing->start + playing->used > sizeof playing->buffer)
7f9d5847 332 /* The ring buffer is currently wrapped, only play up to the wrap point */
6d2d327c 333 avail_bytes = (sizeof playing->buffer) - playing->start;
460b9539 334 else
7f9d5847 335 /* The ring buffer is not wrapped, can play the lot */
460b9539 336 avail_bytes = playing->used;
6d2d327c 337 avail_frames = avail_bytes / bpf;
7f9d5847 338 /* Only play up to the requested amount */
339 if(avail_frames > frames)
340 avail_frames = frames;
341 if(!avail_frames)
342 return;
3c68b773 343 /* Play it, Sam */
344 written_frames = backend->play(avail_frames);
6d2d327c 345 written_bytes = written_frames * bpf;
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346 /* written_bytes and written_frames had better both be set and correct by
347 * this point */
460b9539 348 playing->start += written_bytes;
349 playing->used -= written_bytes;
350 playing->played += written_frames;
351 /* If the pointer is at the end of the buffer (or the buffer is completely
352 * empty) wrap it back to the start. */
6d2d327c 353 if(!playing->used || playing->start == (sizeof playing->buffer))
460b9539 354 playing->start = 0;
f5a03f58 355 /* If the buffer emptied out mark the track as unplayably */
3496051f 356 if(!playing->used && !playing->eof) {
f74fc096 357 error(0, "track buffer emptied");
f5a03f58 358 playing->playable = 0;
f74fc096 359 }
460b9539 360 frames -= written_frames;
5a7c42a8 361 return;
460b9539 362}
363
364/* Notify the server what we're up to. */
365static void report(void) {
366 struct speaker_message sm;
367
6d2d327c 368 if(playing) {
460b9539 369 memset(&sm, 0, sizeof sm);
370 sm.type = paused ? SM_PAUSED : SM_PLAYING;
371 strcpy(sm.id, playing->id);
6d2d327c 372 sm.data = playing->played / config->sample_format.rate;
84aa9f93 373 speaker_send(1, &sm);
460b9539 374 }
375 time(&last_report);
376}
377
9d5da576 378static void reap(int __attribute__((unused)) sig) {
e83d0967 379 pid_t cmdpid;
9d5da576 380 int st;
381
382 do
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383 cmdpid = waitpid(-1, &st, WNOHANG);
384 while(cmdpid > 0);
9d5da576 385 signal(SIGCHLD, reap);
386}
387
1c3f1e73 388int addfd(int fd, int events) {
460b9539 389 if(fdno < NFDS) {
390 fds[fdno].fd = fd;
391 fds[fdno].events = events;
392 return fdno++;
393 } else
394 return -1;
395}
396
572d74ba 397/** @brief Table of speaker backends */
1c3f1e73 398static const struct speaker_backend *backends[] = {
146e86fb 399#if HAVE_ALSA_ASOUNDLIB_H
1c3f1e73 400 &alsa_backend,
572d74ba 401#endif
1c3f1e73 402 &command_backend,
403 &network_backend,
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404#if HAVE_COREAUDIO_AUDIOHARDWARE_H
405 &coreaudio_backend,
406#endif
e99d42b1 407#if HAVE_SYS_SOUNDCARD_H
408 &oss_backend,
409#endif
1c3f1e73 410 0
572d74ba 411};
412
5a7c42a8 413/** @brief Main event loop */
55f35f2d 414static void mainloop(void) {
572d74ba 415 struct track *t;
416 struct speaker_message sm;
84aa9f93 417 int n, fd, stdin_slot, timeout, listen_slot;
460b9539 418
460b9539 419 while(getppid() != 1) {
420 fdno = 0;
5a7c42a8 421 /* By default we will wait up to a second before thinking about current
422 * state. */
423 timeout = 1000;
460b9539 424 /* Always ready for commands from the main server. */
425 stdin_slot = addfd(0, POLLIN);
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426 /* Also always ready for inbound connections */
427 listen_slot = addfd(listenfd, POLLIN);
460b9539 428 /* Try to read sample data for the currently playing track if there is
429 * buffer space. */
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430 if(playing
431 && playing->fd >= 0
432 && !playing->eof
433 && playing->used < (sizeof playing->buffer))
460b9539 434 playing->slot = addfd(playing->fd, POLLIN);
5a7c42a8 435 else if(playing)
460b9539 436 playing->slot = -1;
5a7c42a8 437 if(playable()) {
438 /* We want to play some audio. If the device is closed then we attempt
439 * to open it. */
440 if(device_state == device_closed)
441 activate();
442 /* If the device is (now) open then we will wait up until it is ready for
443 * more. If something went wrong then we should have device_error
444 * instead, but the post-poll code will cope even if it's
445 * device_closed. */
446 if(device_state == device_open)
e84fb5f0 447 backend->beforepoll(&timeout);
5a7c42a8 448 }
460b9539 449 /* If any other tracks don't have a full buffer, try to read sample data
5a7c42a8 450 * from them. We do this last of all, so that if we run out of slots,
451 * nothing important can't be monitored. */
460b9539 452 for(t = tracks; t; t = t->next)
453 if(t != playing) {
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454 if(t->fd >= 0
455 && !t->eof
456 && t->used < sizeof t->buffer) {
9d5da576 457 t->slot = addfd(t->fd, POLLIN | POLLHUP);
460b9539 458 } else
459 t->slot = -1;
460 }
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461 /* Wait for something interesting to happen */
462 n = poll(fds, fdno, timeout);
460b9539 463 if(n < 0) {
464 if(errno == EINTR) continue;
465 fatal(errno, "error calling poll");
466 }
467 /* Play some sound before doing anything else */
5a7c42a8 468 if(playable()) {
469 /* We want to play some audio */
470 if(device_state == device_open) {
471 if(backend->ready())
dac25ef9 472 speaker_play(3 * FRAMES);
5a7c42a8 473 } else {
474 /* We must be in _closed or _error, and it should be the latter, but we
475 * cope with either.
476 *
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477 * We most likely timed out, so now is a good time to retry.
478 * speaker_play() knows to re-activate the device if necessary.
5a7c42a8 479 */
dac25ef9 480 speaker_play(3 * FRAMES);
5a7c42a8 481 }
460b9539 482 }
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483 /* Perhaps a connection has arrived */
484 if(fds[listen_slot].revents & POLLIN) {
485 struct sockaddr_un addr;
486 socklen_t addrlen = sizeof addr;
487 uint32_t l;
488 char id[24];
489
dc450d30 490 if((fd = accept(listenfd, (struct sockaddr *)&addr, &addrlen)) >= 0) {
937be4c0 491 blocking(fd);
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492 if(read(fd, &l, sizeof l) < 4) {
493 error(errno, "reading length from inbound connection");
494 xclose(fd);
495 } else if(l >= sizeof id) {
496 error(0, "id length too long");
497 xclose(fd);
498 } else if(read(fd, id, l) < (ssize_t)l) {
499 error(errno, "reading id from inbound connection");
500 xclose(fd);
501 } else {
502 id[l] = 0;
503 D(("id %s fd %d", id, fd));
504 t = findtrack(id, 1/*create*/);
505 write(fd, "", 1); /* write an ack */
506 if(t->fd != -1) {
66bb2e02 507 error(0, "%s: already got a connection", id);
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508 xclose(fd);
509 } else {
510 nonblock(fd);
511 t->fd = fd; /* yay */
512 }
513 }
514 } else
515 error(errno, "accept");
516 }
460b9539 517 /* Perhaps we have a command to process */
518 if(fds[stdin_slot].revents & POLLIN) {
5a7c42a8 519 /* There might (in theory) be several commands queued up, but in general
520 * this won't be the case, so we don't bother looping around to pick them
521 * all up. */
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522 n = speaker_recv(0, &sm);
523 /* TODO */
460b9539 524 if(n > 0)
525 switch(sm.type) {
460b9539 526 case SM_PLAY:
460b9539 527 if(playing) fatal(0, "got SM_PLAY but already playing something");
528 t = findtrack(sm.id, 1);
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529 D(("SM_PLAY %s fd %d", t->id, t->fd));
530 if(t->fd == -1)
531 error(0, "cannot play track because no connection arrived");
460b9539 532 playing = t;
5a7c42a8 533 /* We attempt to play straight away rather than going round the loop.
dac25ef9 534 * speaker_play() is clever enough to perform any activation that is
5a7c42a8 535 * required. */
dac25ef9 536 speaker_play(3 * FRAMES);
460b9539 537 report();
538 break;
539 case SM_PAUSE:
540 D(("SM_PAUSE"));
541 paused = 1;
542 report();
543 break;
544 case SM_RESUME:
545 D(("SM_RESUME"));
546 if(paused) {
547 paused = 0;
5a7c42a8 548 /* As for SM_PLAY we attempt to play straight away. */
460b9539 549 if(playing)
dac25ef9 550 speaker_play(3 * FRAMES);
460b9539 551 }
552 report();
553 break;
554 case SM_CANCEL:
555 D(("SM_CANCEL %s", sm.id));
556 t = removetrack(sm.id);
557 if(t) {
558 if(t == playing) {
559 sm.type = SM_FINISHED;
560 strcpy(sm.id, playing->id);
84aa9f93 561 speaker_send(1, &sm);
460b9539 562 playing = 0;
563 }
564 destroy(t);
565 } else
566 error(0, "SM_CANCEL for unknown track %s", sm.id);
567 report();
568 break;
569 case SM_RELOAD:
570 D(("SM_RELOAD"));
c00fce3a 571 if(config_read(1)) error(0, "cannot read configuration");
460b9539 572 info("reloaded configuration");
573 break;
574 default:
575 error(0, "unknown message type %d", sm.type);
576 }
577 }
578 /* Read in any buffered data */
579 for(t = tracks; t; t = t->next)
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580 if(t->fd != -1
581 && t->slot != -1
582 && (fds[t->slot].revents & (POLLIN | POLLHUP)))
f5a03f58 583 speaker_fill(t);
460b9539 584 /* Maybe we finished playing a track somewhere in the above */
585 maybe_finished();
586 /* If we don't need the sound device for now then close it for the benefit
587 * of anyone else who wants it. */
5a7c42a8 588 if((!playing || paused) && device_state == device_open)
460b9539 589 idle();
590 /* If we've not reported out state for a second do so now. */
591 if(time(0) > last_report)
592 report();
593 }
55f35f2d 594}
595
596int main(int argc, char **argv) {
0ca6d097 597 int n, logsyslog = !isatty(2);
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598 struct sockaddr_un addr;
599 static const int one = 1;
937be4c0 600 struct speaker_message sm;
38b8221f 601 const char *d;
85cb23d7 602 char *dir;
55f35f2d 603
604 set_progname(argv);
605 if(!setlocale(LC_CTYPE, "")) fatal(errno, "error calling setlocale");
0ca6d097 606 while((n = getopt_long(argc, argv, "hVc:dDSs", options, 0)) >= 0) {
55f35f2d 607 switch(n) {
608 case 'h': help();
609 case 'V': version();
610 case 'c': configfile = optarg; break;
611 case 'd': debugging = 1; break;
612 case 'D': debugging = 0; break;
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613 case 'S': logsyslog = 0; break;
614 case 's': logsyslog = 1; break;
55f35f2d 615 default: fatal(0, "invalid option");
616 }
617 }
38b8221f 618 if((d = getenv("DISORDER_DEBUG_SPEAKER"))) debugging = atoi(d);
0ca6d097 619 if(logsyslog) {
55f35f2d 620 openlog(progname, LOG_PID, LOG_DAEMON);
621 log_default = &log_syslog;
622 }
c00fce3a 623 if(config_read(1)) fatal(0, "cannot read configuration");
6d2d327c 624 bpf = bytes_per_frame(&config->sample_format);
55f35f2d 625 /* ignore SIGPIPE */
626 signal(SIGPIPE, SIG_IGN);
627 /* reap kids */
628 signal(SIGCHLD, reap);
629 /* set nice value */
630 xnice(config->nice_speaker);
631 /* change user */
632 become_mortal();
633 /* make sure we're not root, whatever the config says */
634 if(getuid() == 0 || geteuid() == 0) fatal(0, "do not run as root");
635 /* identify the backend used to play */
1c3f1e73 636 for(n = 0; backends[n]; ++n)
637 if(backends[n]->backend == config->speaker_backend)
55f35f2d 638 break;
1c3f1e73 639 if(!backends[n])
55f35f2d 640 fatal(0, "unsupported backend %d", config->speaker_backend);
1c3f1e73 641 backend = backends[n];
55f35f2d 642 /* backend-specific initialization */
643 backend->init();
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644 /* create the socket directory */
645 byte_xasprintf(&dir, "%s/speaker", config->home);
646 unlink(dir); /* might be a leftover socket */
647 if(mkdir(dir, 0700) < 0)
648 fatal(errno, "error creating %s", dir);
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649 /* set up the listen socket */
650 listenfd = xsocket(PF_UNIX, SOCK_STREAM, 0);
651 memset(&addr, 0, sizeof addr);
652 addr.sun_family = AF_UNIX;
85cb23d7 653 snprintf(addr.sun_path, sizeof addr.sun_path, "%s/speaker/socket",
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654 config->home);
655 if(unlink(addr.sun_path) < 0 && errno != ENOENT)
656 error(errno, "removing %s", addr.sun_path);
657 xsetsockopt(listenfd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof one);
dc450d30 658 if(bind(listenfd, (const struct sockaddr *)&addr, sizeof addr) < 0)
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659 fatal(errno, "error binding socket to %s", addr.sun_path);
660 xlisten(listenfd, 128);
661 nonblock(listenfd);
662 info("listening on %s", addr.sun_path);
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663 memset(&sm, 0, sizeof sm);
664 sm.type = SM_READY;
665 speaker_send(1, &sm);
55f35f2d 666 mainloop();
460b9539 667 info("stopped (parent terminated)");
668 exit(0);
669}
670
671/*
672Local Variables:
673c-basic-offset:2
674comment-column:40
675fill-column:79
676indent-tabs-mode:nil
677End:
678*/