4 This file is part of PulseAudio.
6 Copyright 2004-2006 Lennart Poettering
8 PulseAudio is free software; you can redistribute it and/or modify
9 it under the terms of the GNU Lesser General Public License as published
10 by the Free Software Foundation; either version 2 of the License,
11 or (at your option) any later version.
13 PulseAudio is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with PulseAudio; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
31 #include <pulse/timeval.h>
32 #include <pulse/xmalloc.h>
34 #include <pulsecore/macro.h>
35 #include <pulsecore/module.h>
36 #include <pulsecore/llist.h>
37 #include <pulsecore/sink.h>
38 #include <pulsecore/sink-input.h>
39 #include <pulsecore/memblockq.h>
40 #include <pulsecore/log.h>
41 #include <pulsecore/core-util.h>
42 #include <pulsecore/modargs.h>
43 #include <pulsecore/namereg.h>
44 #include <pulsecore/mutex.h>
45 #include <pulsecore/thread.h>
46 #include <pulsecore/thread-mq.h>
47 #include <pulsecore/rtpoll.h>
48 #include <pulsecore/rtclock.h>
49 #include <pulsecore/core-error.h>
51 #include "module-combine-symdef.h"
53 PA_MODULE_AUTHOR("Lennart Poettering")
54 PA_MODULE_DESCRIPTION("Combine multiple sinks to one")
55 PA_MODULE_VERSION(PACKAGE_VERSION)
57 "sink_name=<name for the sink> "
58 "master=<master sink> "
59 "slaves=<slave sinks> "
60 "adjust_time=<seconds> "
61 "resample_method=<method> "
62 "format=<sample format> "
63 "channels=<number of channels> "
65 "channel_map=<channel map>")
67 #define DEFAULT_SINK_NAME "combined"
68 #define MEMBLOCKQ_MAXLENGTH (1024*170)
70 #define DEFAULT_ADJUST_TIME 10
72 static const char* const valid_modargs[] = {
86 struct userdata *userdata;
88 pa_sink_input *sink_input;
90 pa_asyncmsgq *inq, /* Message queue from the master to this sink input */
91 *outq; /* Message queue from this sink input to the master */
92 pa_rtpoll_item *inq_rtpoll_item, *outq_rtpoll_item;
94 pa_memblockq *memblockq;
96 pa_usec_t total_latency;
98 PA_LLIST_FIELDS(struct output);
107 pa_thread_mq thread_mq;
110 struct output *master;
112 pa_time_event *time_event;
113 uint32_t adjust_time;
118 struct timespec timestamp;
120 pa_hook_slot *sink_new_slot, *sink_unlink_slot, *sink_state_changed_slot;
122 pa_resample_method_t resample_method;
124 struct timespec adjust_timestamp;
126 pa_idxset* outputs; /* managed in main context */
129 PA_LLIST_HEAD(struct output, outputs); /* managed in IO thread context */
130 struct output *master;
135 SINK_MESSAGE_ADD_OUTPUT = PA_SINK_MESSAGE_MAX,
136 SINK_MESSAGE_REMOVE_OUTPUT,
138 SINK_MESSAGE_SET_MASTER
142 SINK_INPUT_MESSAGE_POST = PA_SINK_INPUT_MESSAGE_MAX
145 static void output_free(struct output *o);
146 static int output_create_sink_input(struct userdata *u, struct output *o);
147 static int update_master(struct userdata *u, struct output *o);
148 static int pick_master(struct userdata *u, struct output *except);
150 static void adjust_rates(struct userdata *u) {
152 pa_usec_t max_sink_latency = 0, min_total_latency = (pa_usec_t) -1, target_latency;
157 pa_sink_assert_ref(u->sink);
159 if (pa_idxset_size(u->outputs) <= 0)
162 if (!PA_SINK_OPENED(pa_sink_get_state(u->sink)))
165 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx)) {
166 uint32_t sink_latency;
168 if (!o->sink_input || !PA_SINK_OPENED(pa_sink_get_state(o->sink)))
171 sink_latency = o->sink_input->sink ? pa_sink_get_latency(o->sink_input->sink) : 0;
172 o->total_latency = sink_latency + pa_sink_input_get_latency(o->sink_input);
174 if (sink_latency > max_sink_latency)
175 max_sink_latency = sink_latency;
177 if (o->total_latency < min_total_latency)
178 min_total_latency = o->total_latency;
181 if (min_total_latency == (pa_usec_t) -1)
184 target_latency = max_sink_latency > min_total_latency ? max_sink_latency : min_total_latency;
186 pa_log_info("[%s] target latency is %0.0f usec.", u->sink->name, (float) target_latency);
187 pa_log_info("[%s] master is %s", u->sink->name, u->master->sink->description);
189 base_rate = u->sink->sample_spec.rate;
191 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx)) {
192 uint32_t r = base_rate;
194 if (!o->sink_input || !PA_SINK_OPENED(pa_sink_get_state(o->sink)))
197 if (o->total_latency < target_latency)
198 r -= (uint32_t) (((((double) target_latency - o->total_latency))/u->adjust_time)*r/ 1000000);
199 else if (o->total_latency > target_latency)
200 r += (uint32_t) (((((double) o->total_latency - target_latency))/u->adjust_time)*r/ 1000000);
202 if (r < (uint32_t) (base_rate*0.9) || r > (uint32_t) (base_rate*1.1)) {
203 pa_log_warn("[%s] sample rates too different, not adjusting (%u vs. %u).", o->sink_input->name, base_rate, r);
204 pa_sink_input_set_rate(o->sink_input, base_rate);
206 pa_log_info("[%s] new rate is %u Hz; ratio is %0.3f; latency is %0.0f usec.", o->sink_input->name, r, (double) r / base_rate, (float) o->total_latency);
207 pa_sink_input_set_rate(o->sink_input, r);
212 static void time_callback(pa_mainloop_api*a, pa_time_event* e, const struct timeval *tv, void *userdata) {
213 struct userdata *u = userdata;
218 pa_assert(u->time_event == e);
223 n.tv_sec += u->adjust_time;
224 u->sink->core->mainloop->time_restart(e, &n);
227 static void thread_func(void *userdata) {
228 struct userdata *u = userdata;
232 pa_log_debug("Thread starting up");
234 pa_thread_mq_install(&u->thread_mq);
235 pa_rtpoll_install(u->rtpoll);
237 pa_rtclock_get(&u->timestamp);
239 /* This is only run when we are in NULL mode, to make sure that
240 * playback doesn't stop. In all other cases we hook our stuff
241 * into the master sink. */
246 /* Render some data and drop it immediately */
247 if (u->sink->thread_info.state == PA_SINK_RUNNING) {
250 pa_rtclock_get(&now);
252 if (pa_timespec_cmp(&u->timestamp, &now) <= 0) {
253 pa_sink_skip(u->sink, u->block_size);
254 pa_timespec_add(&u->timestamp, pa_bytes_to_usec(u->block_size, &u->sink->sample_spec));
257 pa_rtpoll_set_timer_absolute(u->rtpoll, &u->timestamp);
259 pa_rtpoll_set_timer_disabled(u->rtpoll);
261 /* Hmm, nothing to do. Let's sleep */
262 if ((ret = pa_rtpoll_run(u->rtpoll, 1)) < 0)
270 /* If this was no regular exit from the loop we have to continue
271 * processing messages until we received PA_MESSAGE_SHUTDOWN */
272 pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
273 pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
276 pa_log_debug("Thread shutting down");
279 /* Called from I/O thread context */
280 static void render_memblock(struct userdata *u, struct output *o, size_t length) {
284 if (!PA_SINK_OPENED(u->sink->thread_info.state))
287 /* We are run by the master output (u->master), possibly on behalf
288 * of another output (o). The other output is waiting for us,
289 * hence it is safe to access its mainblockq directly. */
291 /* Maybe there's some data in the requesting output's queue
293 while (pa_asyncmsgq_process_one(o->inq) > 0)
296 /* Ok, now let's prepare some data if we really have to */
297 while (!pa_memblockq_is_readable(o->memblockq)) {
302 pa_sink_render(u->sink, length, &chunk);
304 /* OK, let's send this data to the other threads */
305 for (j = o->userdata->thread_info.outputs; j; j = j->next)
307 /* Send to other outputs, which are not the requesting
308 * one, and not the master */
310 if (j != o && j != u->thread_info.master && j->sink_input)
311 pa_asyncmsgq_post(j->inq, PA_MSGOBJECT(j->sink_input), SINK_INPUT_MESSAGE_POST, NULL, 0, &chunk, NULL);
313 /* Now push it into the master queue */
314 pa_memblockq_push_align(u->thread_info.master->memblockq, &chunk);
316 /* And into the requesting output's queue */
317 if (o != u->thread_info.master)
318 pa_memblockq_push_align(o->memblockq, &chunk);
320 pa_memblock_unref(chunk.memblock);
324 /* Called from I/O thread context */
325 static void request_memblock(struct output *o, size_t length) {
327 pa_sink_input_assert_ref(o->sink_input);
328 pa_sink_assert_ref(o->userdata->sink);
330 /* If another thread already prepared some data we received
331 * the data over the asyncmsgq, hence let's first process
333 while (pa_asyncmsgq_process_one(o->inq) > 0)
336 /* Check whether we're now readable */
337 if (pa_memblockq_is_readable(o->memblockq))
340 /* OK, we need to prepare new data */
342 if (o == o->userdata->thread_info.master)
343 /* OK, we're the master, so let's render some data */
344 render_memblock(o->userdata, o, length);
347 /* We're not the master, we need to ask the master to do the
348 * rendering for us */
350 pa_asyncmsgq_send(o->outq, PA_MSGOBJECT(o->userdata->sink), SINK_MESSAGE_NEED, o, length, NULL);
353 /* Called from I/O thread context */
354 static int sink_input_peek_cb(pa_sink_input *i, size_t length, pa_memchunk *chunk) {
357 pa_sink_input_assert_ref(i);
358 pa_assert_se(o = i->userdata);
360 /* If necessary, get some new data */
361 request_memblock(o, length);
363 return pa_memblockq_peek(o->memblockq, chunk);
366 /* Called from I/O thread context */
367 static void sink_input_drop_cb(pa_sink_input *i, size_t length) {
370 pa_sink_input_assert_ref(i);
371 pa_assert(length > 0);
372 pa_assert_se(o = i->userdata);
374 pa_memblockq_drop(o->memblockq, length);
377 /* Called from I/O thread context for the master */
378 static void create_master_rtpolls(struct userdata *u) {
383 pa_assert(!u->master->outq_rtpoll_item);
385 /* Set up the queues from the outputs to the master */
386 for (k = u->thread_info.outputs; k; k = k->next) {
388 pa_assert(!k->outq_rtpoll_item);
393 k->outq_rtpoll_item = pa_rtpoll_item_new_asyncmsgq(
394 u->master->sink->rtpoll,
395 PA_RTPOLL_EARLY+1, /* This one has a slightly lower priority than the normal message handling */
400 /* Called from I/O thread context for the master */
401 static void free_master_rtpolls(struct userdata *u) {
404 pa_assert(!u->master->outq_rtpoll_item);
406 for (k = u->thread_info.outputs; k; k = k->next) {
411 if (k->outq_rtpoll_item) {
412 pa_rtpoll_item_free(k->outq_rtpoll_item);
413 k->outq_rtpoll_item = NULL;
416 pa_assert(!k->outq_rtpoll_item);
420 /* Called from I/O thread context */
421 static void sink_input_attach_cb(pa_sink_input *i) {
424 pa_sink_input_assert_ref(i);
425 pa_assert_se(o = i->userdata);
427 if (o->userdata->thread_info.master == o) {
428 create_master_rtpolls(o->userdata);
430 /* Calling these two functions here is safe, because both
431 * threads that might access this sink are known to be
433 pa_sink_set_asyncmsgq(o->userdata->sink, i->sink->asyncmsgq);
434 pa_sink_set_rtpoll(o->userdata->sink, i->sink->rtpoll);
435 pa_sink_attach_within_thread(o->userdata->sink);
438 /* Set up the queues from the inputs to the master */
439 pa_assert(!o->inq_rtpoll_item);
440 o->inq_rtpoll_item = pa_rtpoll_item_new_asyncmsgq(
442 PA_RTPOLL_NORMAL, /* This one has a lower priority than the normal message handling */
446 /* Called from I/O thread context */
447 static void sink_input_detach_cb(pa_sink_input *i) {
450 pa_sink_input_assert_ref(i);
451 pa_assert_se(o = i->userdata);
453 /* pa_log("detaching %s", i->sink->name); */
455 pa_assert(o->inq_rtpoll_item);
456 pa_rtpoll_item_free(o->inq_rtpoll_item);
457 o->inq_rtpoll_item = NULL;
459 if (o->userdata->thread_info.master == o) {
460 pa_sink_detach_within_thread(o->userdata->sink);
461 free_master_rtpolls(o->userdata);
465 /* Called from main context */
466 static void sink_input_kill_cb(pa_sink_input *i) {
469 pa_sink_input_assert_ref(i);
473 pa_sink_input_unlink(o->sink_input);
474 pa_sink_input_unref(o->sink_input);
475 o->sink_input = NULL;
477 pa_module_unload_request(o->userdata->module);
480 /* Called from thread context */
481 static int sink_input_process_msg(pa_msgobject *obj, int code, void *data, int64_t offset, pa_memchunk *chunk) {
482 struct output *o = PA_SINK_INPUT(obj)->userdata;
486 case PA_SINK_INPUT_MESSAGE_GET_LATENCY: {
489 *r = pa_bytes_to_usec(pa_memblockq_get_length(o->memblockq), &o->sink_input->sample_spec);
491 /* Fall through, the default handler will add in the extra
492 * latency added by the resampler */
496 case SINK_INPUT_MESSAGE_POST: {
498 if (PA_SINK_OPENED(o->sink_input->sink->thread_info.state))
499 pa_memblockq_push_align(o->memblockq, chunk);
501 pa_memblockq_flush(o->memblockq);
507 return pa_sink_input_process_msg(obj, code, data, offset, chunk);
510 /* Called from main context */
511 static int suspend(struct userdata *u) {
517 /* Let's suspend by unlinking all streams */
519 if (update_master(u, NULL) < 0)
520 pa_module_unload_request(u->module);
522 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx)) {
525 pa_sink_input_unlink(o->sink_input);
526 pa_sink_input_unref(o->sink_input);
527 o->sink_input = NULL;
531 pa_log_info("Device suspended...");
536 /* Called from main context */
537 static int unsuspend(struct userdata *u) {
545 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx)) {
547 pa_sink_suspend(o->sink, 0);
549 if (PA_SINK_OPENED(pa_sink_get_state(o->sink))) {
550 if (output_create_sink_input(u, o) < 0)
555 if (pick_master(u, NULL) < 0)
556 pa_module_unload_request(u->module);
558 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx))
559 if (o->sink_input && pa_sink_get_state(o->sink_input) == PA_SINK_INPUT_INIT)
560 pa_sink_input_put(o->sink_input);
562 pa_log_info("Resumed successfully...");
566 /* Called from main context */
567 static int sink_set_state(pa_sink *sink, pa_sink_state_t state) {
570 pa_sink_assert_ref(sink);
571 pa_assert_se(u = sink->userdata);
573 /* Please note that in contrast to the ALSA modules we call
574 * suspend/unsuspend from main context here! */
577 case PA_SINK_SUSPENDED:
578 pa_assert(PA_SINK_OPENED(pa_sink_get_state(u->sink)));
586 case PA_SINK_RUNNING:
588 if (pa_sink_get_state(u->sink) == PA_SINK_SUSPENDED) {
589 if (unsuspend(u) < 0)
595 case PA_SINK_UNLINKED:
603 /* Called from thread context of the master */
604 static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
605 struct userdata *u = PA_SINK(o)->userdata;
609 case PA_SINK_MESSAGE_SET_STATE:
611 if ((pa_sink_state_t) PA_PTR_TO_UINT(data) == PA_SINK_RUNNING) {
612 /* Only useful when running in NULL mode, i.e. when no
613 * master sink is attached */
614 pa_rtclock_get(&u->timestamp);
619 case PA_SINK_MESSAGE_GET_LATENCY: {
622 /* This code will only be called when running in NULL
623 * mode, i.e. when no master sink is attached. See
624 * sink_get_latency_cb() below */
625 pa_rtclock_get(&now);
627 if (pa_timespec_cmp(&u->timestamp, &now) > 0)
628 *((pa_usec_t*) data) = 0;
630 *((pa_usec_t*) data) = pa_timespec_diff(&u->timestamp, &now);
634 case SINK_MESSAGE_SET_MASTER:
636 if (u->thread_info.master && data != u->thread_info.master) {
638 if (u->thread_info.master->sink_input->thread_info.attached)
639 free_master_rtpolls(u);
643 if ((u->thread_info.master = data)) {
645 /* There's now a master, and we're being executed in
646 * its thread, let's register the asyncmsgqs from other
649 if (u->thread_info.master->sink_input->thread_info.attached)
650 create_master_rtpolls(u);
656 case SINK_MESSAGE_ADD_OUTPUT: {
657 struct output *op = data;
659 PA_LLIST_PREPEND(struct output, u->thread_info.outputs, op);
661 pa_assert(!op->outq_rtpoll_item);
663 if (op != u->thread_info.master) {
664 /* Create pa_asyncmsgq to master */
666 op->outq_rtpoll_item = pa_rtpoll_item_new_asyncmsgq(
667 u->thread_info.master->sink->rtpoll,
668 PA_RTPOLL_EARLY+1, /* This one has a slightly lower priority than the normal message handling */
675 case SINK_MESSAGE_REMOVE_OUTPUT: {
676 struct output *op = data;
678 PA_LLIST_REMOVE(struct output, u->thread_info.outputs, op);
680 /* Remove the q that leads from this output to the master output */
682 if (op->outq_rtpoll_item) {
683 pa_rtpoll_item_free(op->outq_rtpoll_item);
684 op->outq_rtpoll_item = NULL;
690 case SINK_MESSAGE_NEED:
691 render_memblock(u, data, (size_t) offset);
695 return pa_sink_process_msg(o, code, data, offset, chunk);
698 /* Called from main context */
699 static pa_usec_t sink_get_latency_cb(pa_sink *s) {
702 pa_sink_assert_ref(s);
707 /* If we have a master sink, we just return the latency of it
708 * and add our own buffering on top */
710 if (!u->master->sink_input)
714 pa_sink_input_get_latency(u->master->sink_input) +
715 pa_sink_get_latency(u->master->sink_input->sink);
720 /* We have no master, hence let's ask our own thread which
721 * implements the NULL sink */
723 if (pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
730 static void update_description(struct userdata *u) {
738 if (pa_idxset_isempty(u->outputs)) {
739 pa_sink_set_description(u->sink, "Simultaneous output");
743 t = pa_xstrdup("Simultaneous output to");
745 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx)) {
749 e = pa_sprintf_malloc("%s %s", t, o->sink->description);
752 e = pa_sprintf_malloc("%s, %s", t, o->sink->description);
758 pa_sink_set_description(u->sink, t);
762 static int update_master(struct userdata *u, struct output *o) {
765 /* Make sure everything is detached from the old thread before we move our stuff to a new thread */
766 if (u->sink && PA_SINK_LINKED(pa_sink_get_state(u->sink))) {
767 pa_sink_detach(u->sink);
768 pa_asyncmsgq_send(u->sink->asyncmsgq, PA_MSGOBJECT(u->sink), SINK_MESSAGE_SET_MASTER, NULL, 0, NULL);
770 u->thread_info.master = NULL;
773 /* If we have a master sink we run our own sink in its thread */
775 pa_assert(o->sink_input);
776 pa_assert(PA_SINK_OPENED(pa_sink_get_state(o->sink)));
779 /* If we previously were in NULL mode, let's kill the thread */
780 pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
781 pa_thread_free(u->thread);
784 pa_assert(u->rtpoll);
785 pa_rtpoll_free(u->rtpoll);
789 pa_sink_set_asyncmsgq(u->sink, o->sink->asyncmsgq);
790 pa_sink_set_rtpoll(u->sink, o->sink->rtpoll);
793 pa_log_info("Master sink is now '%s'", o->sink_input->sink->name);
797 /* We have no master sink, let's create our own thread */
799 pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
803 pa_assert(!u->rtpoll);
805 u->rtpoll = pa_rtpoll_new();
806 pa_rtpoll_item_new_asyncmsgq(u->rtpoll, PA_RTPOLL_EARLY, u->thread_mq.inq);
808 pa_sink_set_rtpoll(u->sink, u->rtpoll);
810 if (!(u->thread = pa_thread_new(thread_func, u))) {
811 pa_log("Failed to create thread.");
816 pa_log_info("No suitable master sink found, going to NULL mode\n");
819 /* Now attach everything again */
820 if (u->sink && PA_SINK_LINKED(pa_sink_get_state(u->sink))) {
821 pa_asyncmsgq_send(u->sink->asyncmsgq, PA_MSGOBJECT(u->sink), SINK_MESSAGE_SET_MASTER, u->master, 0, NULL);
822 pa_sink_attach(u->sink);
824 u->thread_info.master = u->master;
829 static int pick_master(struct userdata *u, struct output *except) {
834 if (u->master && u->master != except && u->master->sink_input && PA_SINK_OPENED(pa_sink_get_state(u->master->sink)))
835 return update_master(u, u->master);
837 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx))
838 if (o != except && o->sink_input && PA_SINK_OPENED(pa_sink_get_state(o->sink)))
839 return update_master(u, o);
841 return update_master(u, NULL);
844 static int output_create_sink_input(struct userdata *u, struct output *o) {
845 pa_sink_input_new_data data;
849 pa_assert(!o->sink_input);
851 t = pa_sprintf_malloc("Simultaneous output on %s", o->sink->description);
853 pa_sink_input_new_data_init(&data);
855 data.driver = __FILE__;
857 pa_sink_input_new_data_set_sample_spec(&data, &u->sink->sample_spec);
858 pa_sink_input_new_data_set_channel_map(&data, &u->sink->channel_map);
859 data.module = u->module;
860 data.resample_method = u->resample_method;
862 o->sink_input = pa_sink_input_new(u->core, &data, PA_SINK_INPUT_VARIABLE_RATE|PA_SINK_INPUT_DONT_MOVE);
869 o->sink_input->parent.process_msg = sink_input_process_msg;
870 o->sink_input->peek = sink_input_peek_cb;
871 o->sink_input->drop = sink_input_drop_cb;
872 o->sink_input->attach = sink_input_attach_cb;
873 o->sink_input->detach = sink_input_detach_cb;
874 o->sink_input->kill = sink_input_kill_cb;
875 o->sink_input->userdata = o;
880 static struct output *output_new(struct userdata *u, pa_sink *sink) {
887 o = pa_xnew(struct output, 1);
889 o->inq = pa_asyncmsgq_new(0);
890 o->outq = pa_asyncmsgq_new(0);
891 o->inq_rtpoll_item = NULL;
892 o->outq_rtpoll_item = NULL;
894 o->sink_input = NULL;
895 o->memblockq = pa_memblockq_new(
899 pa_frame_size(&u->sink->sample_spec),
905 pa_assert_se(pa_idxset_put(u->outputs, o, NULL) == 0);
907 update_description(u);
909 if (u->sink && PA_SINK_LINKED(pa_sink_get_state(u->sink)))
910 pa_asyncmsgq_send(u->sink->asyncmsgq, PA_MSGOBJECT(u->sink), SINK_MESSAGE_ADD_OUTPUT, o, 0, NULL);
912 PA_LLIST_PREPEND(struct output, u->thread_info.outputs, o);
914 if (PA_SINK_OPENED(pa_sink_get_state(u->sink)) || pa_sink_get_state(u->sink) == PA_SINK_INIT) {
915 pa_sink_suspend(sink, 0);
917 if (PA_SINK_OPENED(pa_sink_get_state(sink)))
918 if (output_create_sink_input(u, o) < 0)
928 pa_sink_input_unlink(o->sink_input);
929 pa_sink_input_unref(o->sink_input);
933 pa_memblockq_free(o->memblockq);
936 pa_asyncmsgq_unref(o->inq);
939 pa_asyncmsgq_unref(o->outq);
947 static pa_hook_result_t sink_new_hook_cb(pa_core *c, pa_sink *s, struct userdata* u) {
950 pa_core_assert_ref(c);
951 pa_sink_assert_ref(s);
953 pa_assert(u->automatic);
955 if (!(s->flags & PA_SINK_HARDWARE) || s == u->sink)
958 pa_log_info("Configuring new sink: %s", s->name);
960 if (!(o = output_new(u, s))) {
961 pa_log("Failed to create sink input on sink '%s'.", s->name);
965 if (pick_master(u, NULL) < 0)
966 pa_module_unload_request(u->module);
969 pa_sink_input_put(o->sink_input);
974 static pa_hook_result_t sink_unlink_hook_cb(pa_core *c, pa_sink *s, struct userdata* u) {
979 pa_sink_assert_ref(s);
985 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx))
992 pa_log_info("Unconfiguring sink: %s", s->name);
999 static pa_hook_result_t sink_state_changed_hook_cb(pa_core *c, pa_sink *s, struct userdata* u) {
1002 pa_sink_state_t state;
1007 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx))
1014 state = pa_sink_get_state(s);
1016 if (PA_SINK_OPENED(state) && PA_SINK_OPENED(pa_sink_get_state(u->sink)) && !o->sink_input) {
1017 output_create_sink_input(u, o);
1019 if (pick_master(u, NULL) < 0)
1020 pa_module_unload_request(u->module);
1023 pa_sink_input_put(o->sink_input);
1026 if (state == PA_SINK_SUSPENDED && o->sink_input) {
1027 pa_sink_input_unlink(o->sink_input);
1028 pa_sink_input_unref(o->sink_input);
1029 o->sink_input = NULL;
1031 pa_memblockq_flush(o->memblockq);
1033 if (pick_master(u, o) < 0)
1034 pa_module_unload_request(u->module);
1040 int pa__init(pa_module*m) {
1042 pa_modargs *ma = NULL;
1043 const char *master_name, *slaves, *rm;
1044 pa_sink *master_sink = NULL;
1045 int resample_method = PA_RESAMPLER_TRIVIAL;
1053 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
1054 pa_log("failed to parse module arguments");
1058 if ((rm = pa_modargs_get_value(ma, "resample_method", NULL))) {
1059 if ((resample_method = pa_parse_resample_method(rm)) < 0) {
1060 pa_log("invalid resample method '%s'", rm);
1065 u = pa_xnew(struct userdata, 1);
1070 u->thread_info.master = u->master = NULL;
1071 u->time_event = NULL;
1072 u->adjust_time = DEFAULT_ADJUST_TIME;
1073 pa_thread_mq_init(&u->thread_mq, m->core->mainloop);
1076 PA_LLIST_HEAD_INIT(struct output, u->thread_info.outputs);
1077 u->resample_method = resample_method;
1078 u->outputs = pa_idxset_new(NULL, NULL);
1079 pa_timespec_reset(&u->adjust_timestamp);
1081 if (pa_modargs_get_value_u32(ma, "adjust_time", &u->adjust_time) < 0) {
1082 pa_log("Failed to parse adjust_time value");
1086 master_name = pa_modargs_get_value(ma, "master", NULL);
1087 slaves = pa_modargs_get_value(ma, "slaves", NULL);
1088 if (!master_name != !slaves) {
1089 pa_log("No master or slave sinks specified");
1094 if (!(master_sink = pa_namereg_get(m->core, master_name, PA_NAMEREG_SINK, 1))) {
1095 pa_log("Invalid master sink '%s'", master_name);
1099 ss = master_sink->sample_spec;
1103 ss = m->core->default_sample_spec;
1107 if ((pa_modargs_get_sample_spec(ma, &ss) < 0)) {
1108 pa_log("Invalid sample specification.");
1112 if (master_sink && ss.channels == master_sink->sample_spec.channels)
1113 map = master_sink->channel_map;
1115 pa_channel_map_init_auto(&map, ss.channels, PA_CHANNEL_MAP_DEFAULT);
1117 if ((pa_modargs_get_channel_map(ma, NULL, &map) < 0)) {
1118 pa_log("Invalid channel map.");
1122 if (ss.channels != map.channels) {
1123 pa_log("Channel map and sample specification don't match.");
1127 if (!(u->sink = pa_sink_new(m->core, __FILE__, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME), 0, &ss, &map))) {
1128 pa_log("Failed to create sink");
1132 u->sink->parent.process_msg = sink_process_msg;
1133 u->sink->get_latency = sink_get_latency_cb;
1134 u->sink->set_state = sink_set_state;
1135 u->sink->userdata = u;
1137 u->sink->flags = PA_SINK_LATENCY;
1138 pa_sink_set_module(u->sink, m);
1139 pa_sink_set_description(u->sink, "Simultaneous output");
1141 u->block_size = pa_bytes_per_second(&ss) / 20; /* 50 ms */
1142 if (u->block_size <= 0)
1143 u->block_size = pa_frame_size(&ss);
1145 if (!u->automatic) {
1146 const char*split_state;
1150 /* The master and slaves have been specified manually */
1152 if (!(u->master = output_new(u, master_sink))) {
1153 pa_log("Failed to create master sink input on sink '%s'.", master_sink->name);
1158 while ((n = pa_split(slaves, ",", &split_state))) {
1159 pa_sink *slave_sink;
1161 if (!(slave_sink = pa_namereg_get(m->core, n, PA_NAMEREG_SINK, 1)) || slave_sink == u->sink) {
1162 pa_log("Invalid slave sink '%s'", n);
1169 if (!output_new(u, slave_sink)) {
1170 pa_log("Failed to create slave sink input on sink '%s'.", slave_sink->name);
1175 if (pa_idxset_size(u->outputs) <= 1)
1176 pa_log_warn("No slave sinks specified.");
1178 u->sink_new_slot = NULL;
1183 /* We're in automatic mode, we elect one hw sink to the master
1184 * and attach all other hw sinks as slaves to it */
1186 for (s = pa_idxset_first(m->core->sinks, &idx); s; s = pa_idxset_next(m->core->sinks, &idx)) {
1188 if (!(s->flags & PA_SINK_HARDWARE) || s == u->sink)
1191 if (!output_new(u, s)) {
1192 pa_log("Failed to create sink input on sink '%s'.", s->name);
1197 u->sink_new_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_NEW_POST], (pa_hook_cb_t) sink_new_hook_cb, u);
1200 u->sink_unlink_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_UNLINK], (pa_hook_cb_t) sink_unlink_hook_cb, u);
1201 u->sink_state_changed_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_STATE_CHANGED], (pa_hook_cb_t) sink_state_changed_hook_cb, u);
1203 if (pick_master(u, NULL) < 0)
1206 /* Activate the sink and the sink inputs */
1207 pa_sink_put(u->sink);
1209 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx))
1211 pa_sink_input_put(o->sink_input);
1213 if (u->adjust_time > 0) {
1215 pa_gettimeofday(&tv);
1216 tv.tv_sec += u->adjust_time;
1217 u->time_event = m->core->mainloop->time_new(m->core->mainloop, &tv, time_callback, u);
1220 pa_modargs_free(ma);
1227 pa_modargs_free(ma);
1234 static void output_free(struct output *o) {
1237 /* Make sure the master points to a different output */
1238 if (pick_master(o->userdata, o) < 0)
1239 pa_module_unload_request(o->userdata->module);
1241 if (o->userdata->sink && PA_SINK_LINKED(pa_sink_get_state(o->userdata->sink)))
1242 pa_asyncmsgq_send(o->userdata->sink->asyncmsgq, PA_MSGOBJECT(o->userdata->sink), SINK_MESSAGE_REMOVE_OUTPUT, o, 0, NULL);
1244 PA_LLIST_REMOVE(struct output, o->userdata->thread_info.outputs, o);
1246 pa_assert_se(pa_idxset_remove_by_data(o->userdata->outputs, o, NULL));
1248 if (o->sink_input) {
1249 pa_sink_input_unlink(o->sink_input);
1250 pa_sink_input_unref(o->sink_input);
1253 update_description(o->userdata);
1255 if (o->inq_rtpoll_item)
1256 pa_rtpoll_item_free(o->inq_rtpoll_item);
1258 if (o->outq_rtpoll_item)
1259 pa_rtpoll_item_free(o->outq_rtpoll_item);
1262 pa_asyncmsgq_unref(o->inq);
1265 pa_asyncmsgq_unref(o->outq);
1268 pa_memblockq_free(o->memblockq);
1273 void pa__done(pa_module*m) {
1279 if (!(u = m->userdata))
1282 if (u->sink_new_slot)
1283 pa_hook_slot_free(u->sink_new_slot);
1285 if (u->sink_unlink_slot)
1286 pa_hook_slot_free(u->sink_unlink_slot);
1288 if (u->sink_state_changed_slot)
1289 pa_hook_slot_free(u->sink_state_changed_slot);
1292 pa_sink_unlink(u->sink);
1295 while ((o = pa_idxset_first(u->outputs, NULL)))
1298 pa_idxset_free(u->outputs, NULL, NULL);
1302 pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
1303 pa_thread_free(u->thread);
1306 pa_thread_mq_done(&u->thread_mq);
1309 pa_sink_unref(u->sink);
1312 pa_rtpoll_free(u->rtpoll);
1315 u->core->mainloop->time_free(u->time_event);