1 /***
2 This file is part of PulseAudio.
3
4 Copyright 2004-2006 Lennart Poettering
5
6 PulseAudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as published
8 by the Free Software Foundation; either version 2.1 of the License,
9 or (at your option) any later version.
10
11 PulseAudio 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 Lesser General Public License
17 along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
18 ***/
19
20 #ifdef HAVE_CONFIG_H
21 #include <config.h>
22 #endif
23
24 #include <stdlib.h>
25 #include <stdio.h>
26 #include <errno.h>
27 #include <string.h>
28 #include <unistd.h>
29
30 #ifdef HAVE_NETINET_IN_H
31 #include <netinet/in.h>
32 #endif
33
34 #ifdef HAVE_NETINET_TCP_H
35 #include <netinet/tcp.h>
36 #endif
37
38 #ifdef HAVE_SYS_IOCTL_H
39 #include <sys/ioctl.h>
40 #endif
41
42 #ifdef HAVE_LINUX_SOCKIOS_H
43 #include <linux/sockios.h>
44 #endif
45
46 #include <pulse/rtclock.h>
47 #include <pulse/timeval.h>
48 #include <pulse/xmalloc.h>
49
50 #include <pulsecore/socket.h>
51 #include <pulsecore/core-error.h>
52 #include <pulsecore/iochannel.h>
53 #include <pulsecore/sink.h>
54 #include <pulsecore/module.h>
55 #include <pulsecore/core-util.h>
56 #include <pulsecore/modargs.h>
57 #include <pulsecore/log.h>
58 #include <pulsecore/socket-client.h>
59 #include <pulsecore/esound.h>
60 #include <pulsecore/authkey.h>
61 #include <pulsecore/thread-mq.h>
62 #include <pulsecore/thread.h>
63
64 #ifdef USE_SMOOTHER_2
65 #include <pulsecore/time-smoother_2.h>
66 #else
67 #include <pulsecore/time-smoother.h>
68 #endif
69
70 #include <pulsecore/socket-util.h>
71 #include <pulsecore/rtpoll.h>
72 #include <pulsecore/poll.h>
73
74 PA_MODULE_AUTHOR("Lennart Poettering");
75 PA_MODULE_DESCRIPTION("ESOUND Sink");
76 PA_MODULE_VERSION(PACKAGE_VERSION);
77 PA_MODULE_LOAD_ONCE(false);
78 PA_MODULE_USAGE(
79 "sink_name=<name for the sink> "
80 "sink_properties=<properties for the sink> "
81 "server=<address> cookie=<filename> "
82 "format=<sample format> "
83 "rate=<sample rate> "
84 "channels=<number of channels>");
85
86 #define DEFAULT_SINK_NAME "esound_out"
87
88 struct userdata {
89 pa_core *core;
90 pa_module *module;
91 pa_sink *sink;
92
93 pa_thread_mq thread_mq;
94 pa_rtpoll *rtpoll;
95 pa_rtpoll_item *rtpoll_item;
96 pa_thread *thread;
97
98 pa_memchunk memchunk;
99
100 void *write_data;
101 size_t write_length, write_index;
102
103 void *read_data;
104 size_t read_length, read_index;
105
106 enum {
107 STATE_AUTH,
108 STATE_LATENCY,
109 STATE_PREPARE,
110 STATE_RUNNING,
111 STATE_DEAD
112 } state;
113
114 pa_usec_t latency;
115
116 esd_format_t format;
117 int32_t rate;
118
119 #ifdef USE_SMOOTHER_2
120 pa_smoother_2 *smoother;
121 #else
122 pa_smoother *smoother;
123 #endif
124
125 int fd;
126
127 int64_t offset;
128
129 pa_iochannel *io;
130 pa_socket_client *client;
131
132 size_t block_size;
133 };
134
135 static const char* const valid_modargs[] = {
136 "sink_name",
137 "sink_properties",
138 "server",
139 "cookie",
140 "format",
141 "rate",
142 "channels",
143 NULL
144 };
145
146 enum {
147 SINK_MESSAGE_PASS_SOCKET = PA_SINK_MESSAGE_MAX
148 };
149
sink_process_msg(pa_msgobject * o,int code,void * data,int64_t offset,pa_memchunk * chunk)150 static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
151 struct userdata *u = PA_SINK(o)->userdata;
152
153 switch (code) {
154
155 case PA_SINK_MESSAGE_GET_LATENCY: {
156 #ifdef USE_SMOOTHER_2
157 *((int64_t*) data) = pa_smoother_2_get_delay(u->smoother, pa_rtclock_now(), (uint64_t)u->offset + u->memchunk.length);
158 #else
159 pa_usec_t w, r;
160
161 r = pa_smoother_get(u->smoother, pa_rtclock_now());
162 w = pa_bytes_to_usec((uint64_t) u->offset + u->memchunk.length, &u->sink->sample_spec);
163
164 *((int64_t*) data) = (int64_t)w - r;
165 #endif
166 return 0;
167 }
168
169 case SINK_MESSAGE_PASS_SOCKET: {
170 struct pollfd *pollfd;
171
172 pa_assert(!u->rtpoll_item);
173
174 u->rtpoll_item = pa_rtpoll_item_new(u->rtpoll, PA_RTPOLL_NEVER, 1);
175 pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
176 pollfd->fd = u->fd;
177 pollfd->events = pollfd->revents = 0;
178
179 return 0;
180 }
181 }
182
183 return pa_sink_process_msg(o, code, data, offset, chunk);
184 }
185
186 /* Called from the IO thread. */
sink_set_state_in_io_thread_cb(pa_sink * s,pa_sink_state_t new_state,pa_suspend_cause_t new_suspend_cause)187 static int sink_set_state_in_io_thread_cb(pa_sink *s, pa_sink_state_t new_state, pa_suspend_cause_t new_suspend_cause) {
188 struct userdata *u;
189
190 pa_assert(s);
191 pa_assert_se(u = s->userdata);
192
193 /* It may be that only the suspend cause is changing, in which case there's
194 * nothing to do. */
195 if (new_state == s->thread_info.state)
196 return 0;
197
198 switch (new_state) {
199
200 case PA_SINK_SUSPENDED:
201 pa_assert(PA_SINK_IS_OPENED(s->thread_info.state));
202
203 #ifdef USE_SMOOTHER_2
204 pa_smoother_2_pause(u->smoother, pa_rtclock_now());
205 #else
206 pa_smoother_pause(u->smoother, pa_rtclock_now());
207 #endif
208 break;
209
210 case PA_SINK_IDLE:
211 case PA_SINK_RUNNING:
212
213 if (s->thread_info.state == PA_SINK_SUSPENDED)
214 #ifdef USE_SMOOTHER_2
215 pa_smoother_2_resume(u->smoother, pa_rtclock_now());
216 #else
217 pa_smoother_resume(u->smoother, pa_rtclock_now(), true);
218 #endif
219 break;
220
221 case PA_SINK_UNLINKED:
222 case PA_SINK_INIT:
223 case PA_SINK_INVALID_STATE:
224 ;
225 }
226
227 return 0;
228 }
229
thread_func(void * userdata)230 static void thread_func(void *userdata) {
231 struct userdata *u = userdata;
232 int write_type = 0;
233
234 pa_assert(u);
235
236 pa_log_debug("Thread starting up");
237
238 pa_thread_mq_install(&u->thread_mq);
239
240 #ifdef USE_SMOOTHER_2
241 pa_smoother_2_reset(u->smoother, pa_rtclock_now());
242 #else
243 pa_smoother_set_time_offset(u->smoother, pa_rtclock_now());
244 #endif
245
246 for (;;) {
247 int ret;
248
249 if (PA_UNLIKELY(u->sink->thread_info.rewind_requested))
250 pa_sink_process_rewind(u->sink, 0);
251
252 if (u->rtpoll_item) {
253 struct pollfd *pollfd;
254 pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
255
256 /* Render some data and write it to the fifo */
257 if (PA_SINK_IS_OPENED(u->sink->thread_info.state) && pollfd->revents) {
258 #ifdef USE_SMOOTHER_2
259 size_t bytes;
260 #else
261 pa_usec_t usec;
262 #endif
263 int64_t n;
264
265 for (;;) {
266 ssize_t l;
267 void *p;
268
269 if (u->memchunk.length <= 0)
270 pa_sink_render(u->sink, u->block_size, &u->memchunk);
271
272 pa_assert(u->memchunk.length > 0);
273
274 p = pa_memblock_acquire(u->memchunk.memblock);
275 l = pa_write(u->fd, (uint8_t*) p + u->memchunk.index, u->memchunk.length, &write_type);
276 pa_memblock_release(u->memchunk.memblock);
277
278 pa_assert(l != 0);
279
280 if (l < 0) {
281
282 if (errno == EAGAIN) {
283
284 /* OK, we filled all socket buffers up
285 * now. */
286 goto filled_up;
287
288 } else {
289 pa_log("Failed to write data to FIFO: %s", pa_cstrerror(errno));
290 goto fail;
291 }
292
293 } else {
294 u->offset += l;
295
296 u->memchunk.index += (size_t) l;
297 u->memchunk.length -= (size_t) l;
298
299 if (u->memchunk.length <= 0) {
300 pa_memblock_unref(u->memchunk.memblock);
301 pa_memchunk_reset(&u->memchunk);
302 }
303
304 pollfd->revents = 0;
305
306 if (u->memchunk.length > 0)
307
308 /* OK, we wrote less that we asked for,
309 * hence we can assume that the socket
310 * buffers are full now */
311 goto filled_up;
312 }
313 }
314
315 filled_up:
316
317 /* At this spot we know that the socket buffers are
318 * fully filled up. This is the best time to estimate
319 * the playback position of the server */
320
321 n = u->offset;
322
323 #ifdef SIOCOUTQ
324 {
325 int l;
326 if (ioctl(u->fd, SIOCOUTQ, &l) >= 0 && l > 0)
327 n -= l;
328 }
329 #endif
330
331 #ifdef USE_SMOOTHER_2
332 bytes = pa_usec_to_bytes(u->latency, &u->sink->sample_spec);
333
334 if ((uint64_t)n > bytes)
335 bytes = n - bytes;
336 else
337 bytes = 0;
338
339 pa_smoother_2_put(u->smoother, pa_rtclock_now(), bytes);
340 #else
341 usec = pa_bytes_to_usec((uint64_t) n, &u->sink->sample_spec);
342
343 if (usec > u->latency)
344 usec -= u->latency;
345 else
346 usec = 0;
347
348 pa_smoother_put(u->smoother, pa_rtclock_now(), usec);
349 #endif
350 }
351
352 /* Hmm, nothing to do. Let's sleep */
353 pollfd->events = (short) (PA_SINK_IS_OPENED(u->sink->thread_info.state) ? POLLOUT : 0);
354 }
355
356 if ((ret = pa_rtpoll_run(u->rtpoll)) < 0)
357 goto fail;
358
359 if (ret == 0)
360 goto finish;
361
362 if (u->rtpoll_item) {
363 struct pollfd* pollfd;
364
365 pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
366
367 if (pollfd->revents & ~POLLOUT) {
368 pa_log("FIFO shutdown.");
369 goto fail;
370 }
371 }
372 }
373
374 fail:
375 /* If this was no regular exit from the loop we have to continue
376 * processing messages until we received PA_MESSAGE_SHUTDOWN */
377 pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
378 pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
379
380 finish:
381 pa_log_debug("Thread shutting down");
382 }
383
do_write(struct userdata * u)384 static int do_write(struct userdata *u) {
385 ssize_t r;
386 pa_assert(u);
387
388 if (!pa_iochannel_is_writable(u->io))
389 return 0;
390
391 if (u->write_data) {
392 pa_assert(u->write_index < u->write_length);
393
394 if ((r = pa_iochannel_write(u->io, (uint8_t*) u->write_data + u->write_index, u->write_length - u->write_index)) < 0) {
395 pa_log("write() failed: %s", pa_cstrerror(errno));
396 return -1;
397 }
398
399 u->write_index += (size_t) r;
400 pa_assert(u->write_index <= u->write_length);
401
402 if (u->write_index == u->write_length) {
403 pa_xfree(u->write_data);
404 u->write_data = NULL;
405 u->write_index = u->write_length = 0;
406 }
407 }
408
409 if (!u->write_data && u->state == STATE_PREPARE) {
410 int so_sndbuf = 0;
411 socklen_t sl = sizeof(int);
412
413 /* OK, we're done with sending all control data we need to, so
414 * let's hand the socket over to the IO thread now */
415
416 pa_assert(u->fd < 0);
417 u->fd = pa_iochannel_get_send_fd(u->io);
418
419 pa_iochannel_set_noclose(u->io, true);
420 pa_iochannel_free(u->io);
421 u->io = NULL;
422
423 pa_make_tcp_socket_low_delay(u->fd);
424
425 if (getsockopt(u->fd, SOL_SOCKET, SO_SNDBUF, (void *) &so_sndbuf, &sl) < 0)
426 pa_log_warn("getsockopt(SO_SNDBUF) failed: %s", pa_cstrerror(errno));
427 else {
428 pa_log_debug("SO_SNDBUF is %zu.", (size_t) so_sndbuf);
429 pa_sink_set_max_request(u->sink, PA_MAX((size_t) so_sndbuf, u->block_size));
430 }
431
432 pa_log_debug("Connection authenticated, handing fd to IO thread...");
433
434 pa_asyncmsgq_post(u->thread_mq.inq, PA_MSGOBJECT(u->sink), SINK_MESSAGE_PASS_SOCKET, NULL, 0, NULL, NULL);
435 u->state = STATE_RUNNING;
436 }
437
438 return 0;
439 }
440
handle_response(struct userdata * u)441 static int handle_response(struct userdata *u) {
442 pa_assert(u);
443
444 switch (u->state) {
445
446 case STATE_AUTH:
447 pa_assert(u->read_length == sizeof(int32_t));
448
449 /* Process auth data */
450 if (!*(int32_t*) u->read_data) {
451 pa_log("Authentication failed: %s", pa_cstrerror(errno));
452 return -1;
453 }
454
455 /* Request latency data */
456 pa_assert(!u->write_data);
457 *(int32_t*) (u->write_data = pa_xmalloc(u->write_length = sizeof(int32_t))) = ESD_PROTO_LATENCY;
458
459 u->write_index = 0;
460 u->state = STATE_LATENCY;
461
462 /* Space for next response */
463 pa_assert(u->read_length >= sizeof(int32_t));
464 u->read_index = 0;
465 u->read_length = sizeof(int32_t);
466
467 break;
468
469 case STATE_LATENCY: {
470 int32_t *p;
471 pa_assert(u->read_length == sizeof(int32_t));
472
473 /* Process latency info */
474 u->latency = (pa_usec_t) ((double) (*(int32_t*) u->read_data) * 1000000 / 44100);
475 if (u->latency > 10000000) {
476 pa_log_warn("Invalid latency information received from server");
477 u->latency = 0;
478 }
479
480 /* Create stream */
481 pa_assert(!u->write_data);
482 p = u->write_data = pa_xmalloc0(u->write_length = sizeof(int32_t)*3+ESD_NAME_MAX);
483 *(p++) = ESD_PROTO_STREAM_PLAY;
484 *(p++) = u->format;
485 *(p++) = u->rate;
486 pa_strlcpy((char*) p, "PulseAudio Tunnel", ESD_NAME_MAX);
487
488 u->write_index = 0;
489 u->state = STATE_PREPARE;
490
491 /* Don't read any further */
492 pa_xfree(u->read_data);
493 u->read_data = NULL;
494 u->read_index = u->read_length = 0;
495
496 break;
497 }
498
499 default:
500 pa_assert_not_reached();
501 }
502
503 return 0;
504 }
505
do_read(struct userdata * u)506 static int do_read(struct userdata *u) {
507 pa_assert(u);
508
509 if (!pa_iochannel_is_readable(u->io))
510 return 0;
511
512 if (u->state == STATE_AUTH || u->state == STATE_LATENCY) {
513 ssize_t r;
514
515 if (!u->read_data)
516 return 0;
517
518 pa_assert(u->read_index < u->read_length);
519
520 if ((r = pa_iochannel_read(u->io, (uint8_t*) u->read_data + u->read_index, u->read_length - u->read_index)) <= 0) {
521 pa_log("read() failed: %s", r < 0 ? pa_cstrerror(errno) : "EOF");
522 return -1;
523 }
524
525 u->read_index += (size_t) r;
526 pa_assert(u->read_index <= u->read_length);
527
528 if (u->read_index == u->read_length)
529 return handle_response(u);
530 }
531
532 return 0;
533 }
534
io_callback(pa_iochannel * io,void * userdata)535 static void io_callback(pa_iochannel *io, void*userdata) {
536 struct userdata *u = userdata;
537 pa_assert(u);
538
539 if (do_read(u) < 0 || do_write(u) < 0) {
540
541 if (u->io) {
542 pa_iochannel_free(u->io);
543 u->io = NULL;
544 }
545
546 pa_module_unload_request(u->module, true);
547 }
548 }
549
on_connection(pa_socket_client * c,pa_iochannel * io,void * userdata)550 static void on_connection(pa_socket_client *c, pa_iochannel*io, void *userdata) {
551 struct userdata *u = userdata;
552
553 pa_socket_client_unref(u->client);
554 u->client = NULL;
555
556 if (!io) {
557 pa_log("Connection failed: %s", pa_cstrerror(errno));
558 pa_module_unload_request(u->module, true);
559 return;
560 }
561
562 pa_assert(!u->io);
563 u->io = io;
564 pa_iochannel_set_callback(u->io, io_callback, u);
565
566 pa_log_debug("Connection established, authenticating ...");
567 }
568
pa__init(pa_module * m)569 int pa__init(pa_module*m) {
570 struct userdata *u = NULL;
571 pa_sample_spec ss;
572 pa_modargs *ma = NULL;
573 const char *espeaker;
574 uint32_t key;
575 pa_sink_new_data data;
576 char *cookie_path;
577 int r;
578
579 pa_assert(m);
580
581 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
582 pa_log("failed to parse module arguments");
583 goto fail;
584 }
585
586 ss = m->core->default_sample_spec;
587 if (pa_modargs_get_sample_spec(ma, &ss) < 0) {
588 pa_log("invalid sample format specification");
589 goto fail;
590 }
591
592 if ((ss.format != PA_SAMPLE_U8 && ss.format != PA_SAMPLE_S16NE) ||
593 (ss.channels > 2)) {
594 pa_log("esound sample type support is limited to mono/stereo and U8 or S16NE sample data");
595 goto fail;
596 }
597
598 u = pa_xnew0(struct userdata, 1);
599 u->core = m->core;
600 u->module = m;
601 m->userdata = u;
602 u->fd = -1;
603 #ifdef USE_SMOOTHER_2
604 u->smoother = pa_smoother_2_new(5*PA_USEC_PER_SEC, pa_rtclock_now(), pa_frame_size(&ss), ss.rate);
605 #else
606 u->smoother = pa_smoother_new(
607 PA_USEC_PER_SEC,
608 PA_USEC_PER_SEC*2,
609 true,
610 true,
611 10,
612 0,
613 false);
614 #endif
615 pa_memchunk_reset(&u->memchunk);
616 u->offset = 0;
617
618 u->rtpoll = pa_rtpoll_new();
619
620 if (pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll) < 0) {
621 pa_log("pa_thread_mq_init() failed.");
622 goto fail;
623 }
624
625 u->rtpoll_item = NULL;
626
627 u->format =
628 (ss.format == PA_SAMPLE_U8 ? ESD_BITS8 : ESD_BITS16) |
629 (ss.channels == 2 ? ESD_STEREO : ESD_MONO);
630 u->rate = (int32_t) ss.rate;
631 u->block_size = pa_usec_to_bytes(PA_USEC_PER_SEC/20, &ss);
632
633 u->read_data = u->write_data = NULL;
634 u->read_index = u->write_index = u->read_length = u->write_length = 0;
635
636 u->state = STATE_AUTH;
637 u->latency = 0;
638
639 if (!(espeaker = getenv("ESPEAKER")))
640 espeaker = ESD_UNIX_SOCKET_NAME;
641
642 espeaker = pa_modargs_get_value(ma, "server", espeaker);
643
644 pa_sink_new_data_init(&data);
645 data.driver = __FILE__;
646 data.module = m;
647 pa_sink_new_data_set_name(&data, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME));
648 pa_sink_new_data_set_sample_spec(&data, &ss);
649 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, espeaker);
650 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_API, "esd");
651 pa_proplist_setf(data.proplist, PA_PROP_DEVICE_DESCRIPTION, "EsounD Output on %s", espeaker);
652
653 if (pa_modargs_get_proplist(ma, "sink_properties", data.proplist, PA_UPDATE_REPLACE) < 0) {
654 pa_log("Invalid properties");
655 pa_sink_new_data_done(&data);
656 goto fail;
657 }
658
659 u->sink = pa_sink_new(m->core, &data, PA_SINK_LATENCY|PA_SINK_NETWORK);
660 pa_sink_new_data_done(&data);
661
662 if (!u->sink) {
663 pa_log("Failed to create sink.");
664 goto fail;
665 }
666
667 u->sink->parent.process_msg = sink_process_msg;
668 u->sink->set_state_in_io_thread = sink_set_state_in_io_thread_cb;
669 u->sink->userdata = u;
670
671 pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
672 pa_sink_set_rtpoll(u->sink, u->rtpoll);
673
674 if (!(u->client = pa_socket_client_new_string(u->core->mainloop, true, espeaker, ESD_DEFAULT_PORT))) {
675 pa_log("Failed to connect to server.");
676 goto fail;
677 }
678
679 pa_socket_client_set_callback(u->client, on_connection, u);
680
681 cookie_path = pa_xstrdup(pa_modargs_get_value(ma, "cookie", NULL));
682 if (!cookie_path) {
683 if (pa_append_to_home_dir(".esd_auth", &cookie_path) < 0)
684 goto fail;
685 }
686
687 /* Prepare the initial request */
688 u->write_data = pa_xmalloc(u->write_length = ESD_KEY_LEN + sizeof(int32_t));
689
690 r = pa_authkey_load(cookie_path, true, u->write_data, ESD_KEY_LEN);
691 pa_xfree(cookie_path);
692 if (r < 0) {
693 pa_log("Failed to load cookie");
694 goto fail;
695 }
696
697 key = ESD_ENDIAN_KEY;
698 memcpy((uint8_t*) u->write_data + ESD_KEY_LEN, &key, sizeof(key));
699
700 /* Reserve space for the response */
701 u->read_data = pa_xmalloc(u->read_length = sizeof(int32_t));
702
703 if (!(u->thread = pa_thread_new("esound-sink", thread_func, u))) {
704 pa_log("Failed to create thread.");
705 goto fail;
706 }
707
708 pa_sink_put(u->sink);
709
710 pa_modargs_free(ma);
711
712 return 0;
713
714 fail:
715 if (ma)
716 pa_modargs_free(ma);
717
718 pa__done(m);
719
720 return -1;
721 }
722
pa__get_n_used(pa_module * m)723 int pa__get_n_used(pa_module *m) {
724 struct userdata *u;
725
726 pa_assert(m);
727 pa_assert_se(u = m->userdata);
728
729 return pa_sink_linked_by(u->sink);
730 }
731
pa__done(pa_module * m)732 void pa__done(pa_module*m) {
733 struct userdata *u;
734 pa_assert(m);
735
736 if (!(u = m->userdata))
737 return;
738
739 if (u->sink)
740 pa_sink_unlink(u->sink);
741
742 if (u->thread) {
743 pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
744 pa_thread_free(u->thread);
745 }
746
747 pa_thread_mq_done(&u->thread_mq);
748
749 if (u->sink)
750 pa_sink_unref(u->sink);
751
752 if (u->io)
753 pa_iochannel_free(u->io);
754
755 if (u->rtpoll_item)
756 pa_rtpoll_item_free(u->rtpoll_item);
757
758 if (u->rtpoll)
759 pa_rtpoll_free(u->rtpoll);
760
761 if (u->memchunk.memblock)
762 pa_memblock_unref(u->memchunk.memblock);
763
764 if (u->client)
765 pa_socket_client_unref(u->client);
766
767 pa_xfree(u->read_data);
768 pa_xfree(u->write_data);
769
770 if (u->smoother)
771 #ifdef USE_SMOOTHER_2
772 pa_smoother_2_free(u->smoother);
773 #else
774 pa_smoother_free(u->smoother);
775 #endif
776
777 if (u->fd >= 0)
778 pa_close(u->fd);
779
780 pa_xfree(u);
781 }
782