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