2 This file is part of PulseAudio.
4 Copyright 2004-2006 Lennart Poettering
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 of the License,
9 or (at your option) any later version.
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.
16 You should have received a copy of the GNU Lesser General Public License
17 along with PulseAudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
29 #include <pulse/timeval.h>
30 #include <pulse/xmalloc.h>
32 #include <pulsecore/macro.h>
33 #include <pulsecore/module.h>
34 #include <pulsecore/llist.h>
35 #include <pulsecore/sink.h>
36 #include <pulsecore/sink-input.h>
37 #include <pulsecore/memblockq.h>
38 #include <pulsecore/log.h>
39 #include <pulsecore/core-util.h>
40 #include <pulsecore/modargs.h>
41 #include <pulsecore/namereg.h>
42 #include <pulsecore/mutex.h>
43 #include <pulsecore/thread.h>
44 #include <pulsecore/thread-mq.h>
45 #include <pulsecore/rtpoll.h>
46 #include <pulsecore/rtclock.h>
47 #include <pulsecore/core-error.h>
49 #include "module-combine-symdef.h"
51 PA_MODULE_AUTHOR("Lennart Poettering");
52 PA_MODULE_DESCRIPTION("Combine multiple sinks to one");
53 PA_MODULE_VERSION(PACKAGE_VERSION);
54 PA_MODULE_LOAD_ONCE(FALSE);
56 "sink_name=<name for the sink> "
57 "master=<master sink> "
58 "slaves=<slave sinks> "
59 "adjust_time=<seconds> "
60 "resample_method=<method> "
61 "format=<sample format> "
62 "channels=<number of channels> "
64 "channel_map=<channel map>");
66 #define DEFAULT_SINK_NAME "combined"
67 #define MEMBLOCKQ_MAXLENGTH (1024*1024*16)
69 #define DEFAULT_ADJUST_TIME 10
71 static const char* const valid_modargs[] = {
85 struct userdata *userdata;
88 pa_sink_input *sink_input;
90 pa_asyncmsgq *inq, /* Message queue from the sink thread to this sink input */
91 *outq; /* Message queue from this sink input to the sink thread */
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 pa_time_event *time_event;
111 uint32_t adjust_time;
116 pa_hook_slot *sink_new_slot, *sink_unlink_slot, *sink_state_changed_slot;
118 pa_resample_method_t resample_method;
120 struct timeval adjust_timestamp;
122 struct output *master;
123 pa_idxset* outputs; /* managed in main context */
126 PA_LLIST_HEAD(struct output, active_outputs); /* managed in IO thread context */
127 pa_atomic_t running; /* we cache that value here, so that every thread can query it cheaply */
128 struct timeval timestamp;
129 pa_bool_t in_null_mode;
134 SINK_MESSAGE_ADD_OUTPUT = PA_SINK_MESSAGE_MAX,
135 SINK_MESSAGE_REMOVE_OUTPUT,
140 SINK_INPUT_MESSAGE_POST = PA_SINK_INPUT_MESSAGE_MAX,
143 static void output_free(struct output *o);
144 static int output_create_sink_input(struct output *o);
145 static void update_master(struct userdata *u, struct output *o);
146 static void pick_master(struct userdata *u, struct output *except);
148 static void adjust_rates(struct userdata *u) {
150 pa_usec_t max_sink_latency = 0, min_total_latency = (pa_usec_t) -1, target_latency;
155 pa_sink_assert_ref(u->sink);
157 if (pa_idxset_size(u->outputs) <= 0)
163 if (!PA_SINK_IS_OPENED(pa_sink_get_state(u->sink)))
166 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx)) {
167 pa_usec_t sink_latency;
169 if (!o->sink_input || !PA_SINK_IS_OPENED(pa_sink_get_state(o->sink)))
172 sink_latency = pa_sink_get_latency(o->sink);
173 o->total_latency = sink_latency + pa_sink_input_get_latency(o->sink_input);
175 if (sink_latency > max_sink_latency)
176 max_sink_latency = sink_latency;
178 if (min_total_latency == (pa_usec_t) -1 || o->total_latency < min_total_latency)
179 min_total_latency = o->total_latency;
182 if (min_total_latency == (pa_usec_t) -1)
185 target_latency = max_sink_latency > min_total_latency ? max_sink_latency : min_total_latency;
187 pa_log_info("[%s] target latency is %0.0f usec.", u->sink->name, (float) target_latency);
188 pa_log_info("[%s] master %s latency %0.0f usec.", u->sink->name, u->master->sink->name, (float) u->master->total_latency);
190 base_rate = u->sink->sample_spec.rate;
192 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx)) {
193 uint32_t r = base_rate;
195 if (!o->sink_input || !PA_SINK_IS_OPENED(pa_sink_get_state(o->sink)))
198 if (o->total_latency < target_latency)
199 r -= (uint32_t) (((((double) target_latency - o->total_latency))/u->adjust_time)*r/PA_USEC_PER_SEC);
200 else if (o->total_latency > target_latency)
201 r += (uint32_t) (((((double) o->total_latency - target_latency))/u->adjust_time)*r/PA_USEC_PER_SEC);
203 if (r < (uint32_t) (base_rate*0.9) || r > (uint32_t) (base_rate*1.1)) {
204 pa_log_warn("[%s] sample rates too different, not adjusting (%u vs. %u).", pa_proplist_gets(o->sink_input->proplist, PA_PROP_MEDIA_NAME), base_rate, r);
205 pa_sink_input_set_rate(o->sink_input, base_rate);
207 pa_log_info("[%s] new rate is %u Hz; ratio is %0.3f; latency is %0.0f usec.", pa_proplist_gets(o->sink_input->proplist, PA_PROP_MEDIA_NAME), r, (double) r / base_rate, (float) o->total_latency);
208 pa_sink_input_set_rate(o->sink_input, r);
213 static void time_callback(pa_mainloop_api*a, pa_time_event* e, const struct timeval *tv, void *userdata) {
214 struct userdata *u = userdata;
219 pa_assert(u->time_event == e);
224 n.tv_sec += u->adjust_time;
225 u->sink->core->mainloop->time_restart(e, &n);
228 static void thread_func(void *userdata) {
229 struct userdata *u = userdata;
233 pa_log_debug("Thread starting up");
235 if (u->core->realtime_scheduling)
236 pa_make_realtime(u->core->realtime_priority+1);
238 pa_thread_mq_install(&u->thread_mq);
239 pa_rtpoll_install(u->rtpoll);
241 pa_rtclock_get(&u->thread_info.timestamp);
242 u->thread_info.in_null_mode = FALSE;
247 /* If no outputs are connected, render some data and drop it immediately. */
248 if (u->sink->thread_info.state == PA_SINK_RUNNING && !u->thread_info.active_outputs) {
251 /* Just rewind if necessary, since we are in NULL mode, we
252 * don't have to pass this on */
253 pa_sink_process_rewind(u->sink, u->sink->thread_info.rewind_nbytes);
254 u->sink->thread_info.rewind_nbytes = 0;
256 pa_rtclock_get(&now);
258 if (!u->thread_info.in_null_mode || pa_timeval_cmp(&u->thread_info.timestamp, &now) <= 0) {
261 pa_sink_render_full(u->sink, u->block_size, &chunk);
262 pa_memblock_unref(chunk.memblock);
264 if (!u->thread_info.in_null_mode)
265 u->thread_info.timestamp = now;
267 pa_timeval_add(&u->thread_info.timestamp, pa_bytes_to_usec(u->block_size, &u->sink->sample_spec));
270 pa_rtpoll_set_timer_absolute(u->rtpoll, &u->thread_info.timestamp);
271 u->thread_info.in_null_mode = TRUE;
274 pa_rtpoll_set_timer_disabled(u->rtpoll);
275 u->thread_info.in_null_mode = FALSE;
278 /* Hmm, nothing to do. Let's sleep */
279 if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0) {
280 pa_log_info("pa_rtpoll_run() = %i", ret);
289 /* If this was no regular exit from the loop we have to continue
290 * processing messages until we received PA_MESSAGE_SHUTDOWN */
291 pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
292 pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
295 pa_log_debug("Thread shutting down");
298 /* Called from I/O thread context */
299 static void render_memblock(struct userdata *u, struct output *o, size_t length) {
303 /* We are run by the sink thread, on behalf of an output (o). The
304 * other output is waiting for us, hence it is safe to access its
305 * mainblockq and asyncmsgq directly. */
307 /* If we are not running, we cannot produce any data */
308 if (!pa_atomic_load(&u->thread_info.running))
311 /* Maybe there's some data in the requesting output's queue
313 while (pa_asyncmsgq_process_one(o->inq) > 0)
316 /* Ok, now let's prepare some data if we really have to */
317 while (!pa_memblockq_is_readable(o->memblockq)) {
322 pa_sink_render(u->sink, length, &chunk);
324 /* OK, let's send this data to the other threads */
325 for (j = u->thread_info.active_outputs; j; j = j->next)
327 /* Send to other outputs, which are not the requesting
331 pa_asyncmsgq_post(j->inq, PA_MSGOBJECT(j->sink_input), SINK_INPUT_MESSAGE_POST, NULL, 0, &chunk, NULL);
333 /* And place it directly into the requesting output's queue */
335 pa_memblockq_push_align(o->memblockq, &chunk);
337 pa_memblock_unref(chunk.memblock);
341 /* Called from I/O thread context */
342 static void request_memblock(struct output *o, size_t length) {
344 pa_sink_input_assert_ref(o->sink_input);
345 pa_sink_assert_ref(o->userdata->sink);
347 /* If another thread already prepared some data we received
348 * the data over the asyncmsgq, hence let's first process
350 while (pa_asyncmsgq_process_one(o->inq) > 0)
353 /* Check whether we're now readable */
354 if (pa_memblockq_is_readable(o->memblockq))
357 /* OK, we need to prepare new data, but only if the sink is actually running */
358 if (pa_atomic_load(&o->userdata->thread_info.running))
359 pa_asyncmsgq_send(o->outq, PA_MSGOBJECT(o->userdata->sink), SINK_MESSAGE_NEED, o, length, NULL);
362 /* Called from I/O thread context */
363 static int sink_input_pop_cb(pa_sink_input *i, size_t nbytes, pa_memchunk *chunk) {
366 pa_sink_input_assert_ref(i);
367 pa_assert_se(o = i->userdata);
369 /* If necessary, get some new data */
370 request_memblock(o, nbytes);
372 if (pa_memblockq_peek(o->memblockq, chunk) < 0)
375 pa_memblockq_drop(o->memblockq, chunk->length);
379 /* Called from I/O thread context */
380 static void sink_input_attach_cb(pa_sink_input *i) {
383 pa_sink_input_assert_ref(i);
384 pa_assert_se(o = i->userdata);
386 /* Set up the queue from the sink thread to us */
387 pa_assert(!o->inq_rtpoll_item);
388 o->inq_rtpoll_item = pa_rtpoll_item_new_asyncmsgq_read(
390 PA_RTPOLL_LATE, /* This one is not that important, since we check for data in _peek() anyway. */
394 /* Called from I/O thread context */
395 static void sink_input_detach_cb(pa_sink_input *i) {
398 pa_sink_input_assert_ref(i);
399 pa_assert_se(o = i->userdata);
401 /* Shut down the queue from the sink thread to us */
402 pa_assert(o->inq_rtpoll_item);
403 pa_rtpoll_item_free(o->inq_rtpoll_item);
404 o->inq_rtpoll_item = NULL;
407 /* Called from main context */
408 static void sink_input_kill_cb(pa_sink_input *i) {
411 pa_sink_input_assert_ref(i);
412 pa_assert(o = i->userdata);
414 pa_module_unload_request(o->userdata->module);
418 /* Called from thread context */
419 static int sink_input_process_msg(pa_msgobject *obj, int code, void *data, int64_t offset, pa_memchunk *chunk) {
420 struct output *o = PA_SINK_INPUT(obj)->userdata;
424 case PA_SINK_INPUT_MESSAGE_GET_LATENCY: {
427 *r = pa_bytes_to_usec(pa_memblockq_get_length(o->memblockq), &o->sink_input->sample_spec);
429 /* Fall through, the default handler will add in the extra
430 * latency added by the resampler */
434 case SINK_INPUT_MESSAGE_POST:
436 if (PA_SINK_IS_OPENED(o->sink_input->sink->thread_info.state))
437 pa_memblockq_push_align(o->memblockq, chunk);
439 pa_memblockq_flush(o->memblockq);
445 return pa_sink_input_process_msg(obj, code, data, offset, chunk);
448 /* Called from main context */
449 static void disable_output(struct output *o) {
455 pa_asyncmsgq_send(o->userdata->sink->asyncmsgq, PA_MSGOBJECT(o->userdata->sink), SINK_MESSAGE_REMOVE_OUTPUT, o, 0, NULL);
456 pa_sink_input_unlink(o->sink_input);
457 pa_sink_input_unref(o->sink_input);
458 o->sink_input = NULL;
462 /* Called from main context */
463 static void enable_output(struct output *o) {
469 if (output_create_sink_input(o) >= 0) {
471 pa_memblockq_flush(o->memblockq);
473 pa_sink_input_put(o->sink_input);
475 if (o->userdata->sink && PA_SINK_IS_LINKED(pa_sink_get_state(o->userdata->sink)))
476 pa_asyncmsgq_send(o->userdata->sink->asyncmsgq, PA_MSGOBJECT(o->userdata->sink), SINK_MESSAGE_ADD_OUTPUT, o, 0, NULL);
480 /* Called from main context */
481 static void suspend(struct userdata *u) {
487 /* Let's suspend by unlinking all streams */
488 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx))
491 pick_master(u, NULL);
493 pa_log_info("Device suspended...");
496 /* Called from main context */
497 static void unsuspend(struct userdata *u) {
504 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx)) {
506 pa_sink_suspend(o->sink, FALSE);
508 if (PA_SINK_IS_OPENED(pa_sink_get_state(o->sink)))
512 pick_master(u, NULL);
514 pa_log_info("Resumed successfully...");
517 /* Called from main context */
518 static int sink_set_state(pa_sink *sink, pa_sink_state_t state) {
521 pa_sink_assert_ref(sink);
522 pa_assert_se(u = sink->userdata);
524 /* Please note that in contrast to the ALSA modules we call
525 * suspend/unsuspend from main context here! */
528 case PA_SINK_SUSPENDED:
529 pa_assert(PA_SINK_IS_OPENED(pa_sink_get_state(u->sink)));
535 case PA_SINK_RUNNING:
537 if (pa_sink_get_state(u->sink) == PA_SINK_SUSPENDED)
542 case PA_SINK_UNLINKED:
550 /* Called from thread context of the master */
551 static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
552 struct userdata *u = PA_SINK(o)->userdata;
556 case PA_SINK_MESSAGE_SET_STATE:
557 pa_atomic_store(&u->thread_info.running, PA_PTR_TO_UINT(data) == PA_SINK_RUNNING);
560 case PA_SINK_MESSAGE_GET_LATENCY:
562 /* This code will only be called when running in NULL
563 * mode, i.e. when no output is attached. See
564 * sink_get_latency_cb() below */
566 if (u->thread_info.in_null_mode) {
569 if (pa_timeval_cmp(&u->thread_info.timestamp, pa_rtclock_get(&now)) > 0) {
570 *((pa_usec_t*) data) = pa_timeval_diff(&u->thread_info.timestamp, &now);
575 *((pa_usec_t*) data) = 0;
579 case SINK_MESSAGE_ADD_OUTPUT: {
580 struct output *op = data;
582 PA_LLIST_PREPEND(struct output, u->thread_info.active_outputs, op);
584 pa_assert(!op->outq_rtpoll_item);
586 /* Create pa_asyncmsgq to the sink thread */
588 op->outq_rtpoll_item = pa_rtpoll_item_new_asyncmsgq_read(
590 PA_RTPOLL_EARLY-1, /* This item is very important */
596 case SINK_MESSAGE_REMOVE_OUTPUT: {
597 struct output *op = data;
599 PA_LLIST_REMOVE(struct output, u->thread_info.active_outputs, op);
601 /* Remove the q that leads from this output to the sink thread */
603 pa_assert(op->outq_rtpoll_item);
604 pa_rtpoll_item_free(op->outq_rtpoll_item);
605 op->outq_rtpoll_item = NULL;
610 case SINK_MESSAGE_NEED:
611 render_memblock(u, data, (size_t) offset);
615 return pa_sink_process_msg(o, code, data, offset, chunk);
618 /* Called from main context */
619 /* static pa_usec_t sink_get_latency_cb(pa_sink *s) { */
620 /* struct userdata *u; */
622 /* pa_sink_assert_ref(s); */
623 /* pa_assert_se(u = s->userdata); */
625 /* if (u->master) { */
626 /* /\* If we have a master sink, we just return the latency of it */
627 /* * and add our own buffering on top *\/ */
629 /* if (!u->master->sink_input) */
633 /* pa_sink_input_get_latency(u->master->sink_input) + */
634 /* pa_sink_get_latency(u->master->sink); */
637 /* pa_usec_t usec = 0; */
639 /* /\* We have no master, hence let's ask our own thread which */
640 /* * implements the NULL sink *\/ */
642 /* if (pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0) */
649 static void update_description(struct userdata *u) {
657 if (pa_idxset_isempty(u->outputs)) {
658 pa_sink_set_description(u->sink, "Simultaneous output");
662 t = pa_xstrdup("Simultaneous output to");
664 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx)) {
668 e = pa_sprintf_malloc("%s %s", t, pa_strnull(pa_proplist_gets(o->sink->proplist, PA_PROP_DEVICE_DESCRIPTION)));
671 e = pa_sprintf_malloc("%s, %s", t, pa_strnull(pa_proplist_gets(o->sink->proplist, PA_PROP_DEVICE_DESCRIPTION)));
677 pa_sink_set_description(u->sink, t);
681 static void update_master(struct userdata *u, struct output *o) {
688 pa_log_info("Master sink is now '%s'", o->sink_input->sink->name);
690 pa_log_info("No master selected, lacking suitable outputs.");
693 static void pick_master(struct userdata *u, struct output *except) {
699 u->master != except &&
700 u->master->sink_input &&
701 PA_SINK_IS_OPENED(pa_sink_get_state(u->master->sink))) {
702 update_master(u, u->master);
706 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx))
709 PA_SINK_IS_OPENED(pa_sink_get_state(o->sink))) {
714 update_master(u, NULL);
717 static int output_create_sink_input(struct output *o) {
718 pa_sink_input_new_data data;
726 t = pa_sprintf_malloc("Simultaneous output on %s", pa_strnull(pa_proplist_gets(o->sink->proplist, PA_PROP_DEVICE_DESCRIPTION)));
728 pa_sink_input_new_data_init(&data);
730 data.driver = __FILE__;
731 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_DESCRIPTION, t);
732 pa_sink_input_new_data_set_sample_spec(&data, &o->userdata->sink->sample_spec);
733 pa_sink_input_new_data_set_channel_map(&data, &o->userdata->sink->channel_map);
734 data.module = o->userdata->module;
735 data.resample_method = o->userdata->resample_method;
737 o->sink_input = pa_sink_input_new(o->userdata->core, &data, PA_SINK_INPUT_VARIABLE_RATE|PA_SINK_INPUT_DONT_MOVE);
739 pa_sink_input_new_data_done(&data);
746 o->sink_input->parent.process_msg = sink_input_process_msg;
747 o->sink_input->pop = sink_input_pop_cb;
748 o->sink_input->attach = sink_input_attach_cb;
749 o->sink_input->detach = sink_input_detach_cb;
750 o->sink_input->kill = sink_input_kill_cb;
751 o->sink_input->userdata = o;
757 static struct output *output_new(struct userdata *u, pa_sink *sink) {
764 o = pa_xnew(struct output, 1);
766 o->inq = pa_asyncmsgq_new(0);
767 o->outq = pa_asyncmsgq_new(0);
768 o->inq_rtpoll_item = NULL;
769 o->outq_rtpoll_item = NULL;
771 o->sink_input = NULL;
772 o->memblockq = pa_memblockq_new(
776 pa_frame_size(&u->sink->sample_spec),
782 pa_assert_se(pa_idxset_put(u->outputs, o, NULL) == 0);
784 if (u->sink && PA_SINK_IS_LINKED(pa_sink_get_state(u->sink)))
785 pa_asyncmsgq_send(u->sink->asyncmsgq, PA_MSGOBJECT(u->sink), SINK_MESSAGE_ADD_OUTPUT, o, 0, NULL);
787 /* If the sink is not yet started, we need to do the activation ourselves */
788 PA_LLIST_PREPEND(struct output, u->thread_info.active_outputs, o);
790 o->outq_rtpoll_item = pa_rtpoll_item_new_asyncmsgq_read(
792 PA_RTPOLL_EARLY-1, /* This item is very important */
796 if (PA_SINK_IS_OPENED(pa_sink_get_state(u->sink)) || pa_sink_get_state(u->sink) == PA_SINK_INIT) {
797 pa_sink_suspend(sink, FALSE);
799 if (PA_SINK_IS_OPENED(pa_sink_get_state(sink)))
800 if (output_create_sink_input(o) < 0)
805 update_description(u);
812 pa_idxset_remove_by_data(u->outputs, o, NULL);
815 pa_sink_input_unlink(o->sink_input);
816 pa_sink_input_unref(o->sink_input);
820 pa_memblockq_free(o->memblockq);
823 pa_asyncmsgq_unref(o->inq);
826 pa_asyncmsgq_unref(o->outq);
834 static pa_hook_result_t sink_new_hook_cb(pa_core *c, pa_sink *s, struct userdata* u) {
837 pa_core_assert_ref(c);
838 pa_sink_assert_ref(s);
840 pa_assert(u->automatic);
842 if (!(s->flags & PA_SINK_HARDWARE) || s == u->sink)
845 pa_log_info("Configuring new sink: %s", s->name);
847 if (!(o = output_new(u, s))) {
848 pa_log("Failed to create sink input on sink '%s'.", s->name);
853 pa_sink_input_put(o->sink_input);
855 pick_master(u, NULL);
860 static pa_hook_result_t sink_unlink_hook_cb(pa_core *c, pa_sink *s, struct userdata* u) {
865 pa_sink_assert_ref(s);
871 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx))
878 pa_log_info("Unconfiguring sink: %s", s->name);
885 static pa_hook_result_t sink_state_changed_hook_cb(pa_core *c, pa_sink *s, struct userdata* u) {
888 pa_sink_state_t state;
893 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx))
900 state = pa_sink_get_state(s);
902 if (PA_SINK_IS_OPENED(state) && PA_SINK_IS_OPENED(pa_sink_get_state(u->sink)) && !o->sink_input) {
904 pick_master(u, NULL);
907 if (state == PA_SINK_SUSPENDED && o->sink_input) {
915 int pa__init(pa_module*m) {
917 pa_modargs *ma = NULL;
918 const char *master_name, *slaves, *rm;
919 pa_sink *master_sink = NULL;
920 int resample_method = PA_RESAMPLER_TRIVIAL;
925 pa_sink_new_data data;
929 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
930 pa_log("failed to parse module arguments");
934 if ((rm = pa_modargs_get_value(ma, "resample_method", NULL))) {
935 if ((resample_method = pa_parse_resample_method(rm)) < 0) {
936 pa_log("invalid resample method '%s'", rm);
941 u = pa_xnew(struct userdata, 1);
947 u->time_event = NULL;
948 u->adjust_time = DEFAULT_ADJUST_TIME;
949 u->rtpoll = pa_rtpoll_new();
950 pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll);
952 u->resample_method = resample_method;
953 u->outputs = pa_idxset_new(NULL, NULL);
954 memset(&u->adjust_timestamp, 0, sizeof(u->adjust_timestamp));
955 u->sink_new_slot = u->sink_unlink_slot = u->sink_state_changed_slot = NULL;
956 PA_LLIST_HEAD_INIT(struct output, u->thread_info.active_outputs);
957 pa_atomic_store(&u->thread_info.running, FALSE);
958 u->thread_info.in_null_mode = FALSE;
960 if (pa_modargs_get_value_u32(ma, "adjust_time", &u->adjust_time) < 0) {
961 pa_log("Failed to parse adjust_time value");
965 master_name = pa_modargs_get_value(ma, "master", NULL);
966 slaves = pa_modargs_get_value(ma, "slaves", NULL);
967 if (!master_name != !slaves) {
968 pa_log("No master or slave sinks specified");
973 if (!(master_sink = pa_namereg_get(m->core, master_name, PA_NAMEREG_SINK, 1))) {
974 pa_log("Invalid master sink '%s'", master_name);
978 ss = master_sink->sample_spec;
979 u->automatic = FALSE;
982 ss = m->core->default_sample_spec;
986 if ((pa_modargs_get_sample_spec(ma, &ss) < 0)) {
987 pa_log("Invalid sample specification.");
991 if (master_sink && ss.channels == master_sink->sample_spec.channels)
992 map = master_sink->channel_map;
994 pa_assert_se(pa_channel_map_init_auto(&map, ss.channels, PA_CHANNEL_MAP_AUX));
995 pa_channel_map_init_auto(&map, ss.channels, PA_CHANNEL_MAP_DEFAULT);
998 if ((pa_modargs_get_channel_map(ma, NULL, &map) < 0)) {
999 pa_log("Invalid channel map.");
1003 if (ss.channels != map.channels) {
1004 pa_log("Channel map and sample specification don't match.");
1008 pa_sink_new_data_init(&data);
1009 data.name = pa_xstrdup(pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME));
1010 data.namereg_fail = FALSE;
1011 data.driver = __FILE__;
1013 pa_sink_new_data_set_sample_spec(&data, &ss);
1014 pa_sink_new_data_set_channel_map(&data, &map);
1015 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_DESCRIPTION, "Simultaneous Output");
1017 u->sink = pa_sink_new(m->core, &data, PA_SINK_LATENCY);
1018 pa_sink_new_data_done(&data);
1021 pa_log("Failed to create sink");
1025 u->sink->parent.process_msg = sink_process_msg;
1026 /* u->sink->get_latency = sink_get_latency_cb; */
1027 u->sink->set_state = sink_set_state;
1028 u->sink->userdata = u;
1030 pa_sink_set_rtpoll(u->sink, u->rtpoll);
1031 pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
1033 u->block_size = pa_bytes_per_second(&ss) / 20; /* 50 ms */
1034 if (u->block_size <= 0)
1035 u->block_size = pa_frame_size(&ss);
1037 if (!u->automatic) {
1038 const char*split_state;
1042 /* The master and slaves have been specified manually */
1044 if (!(u->master = output_new(u, master_sink))) {
1045 pa_log("Failed to create master sink input on sink '%s'.", master_sink->name);
1050 while ((n = pa_split(slaves, ",", &split_state))) {
1051 pa_sink *slave_sink;
1053 if (!(slave_sink = pa_namereg_get(m->core, n, PA_NAMEREG_SINK, 1)) || slave_sink == u->sink) {
1054 pa_log("Invalid slave sink '%s'", n);
1061 if (!output_new(u, slave_sink)) {
1062 pa_log("Failed to create slave sink input on sink '%s'.", slave_sink->name);
1067 if (pa_idxset_size(u->outputs) <= 1)
1068 pa_log_warn("No slave sinks specified.");
1070 u->sink_new_slot = NULL;
1075 /* We're in automatic mode, we elect one hw sink to the master
1076 * and attach all other hw sinks as slaves to it */
1078 for (s = pa_idxset_first(m->core->sinks, &idx); s; s = pa_idxset_next(m->core->sinks, &idx)) {
1080 if (!(s->flags & PA_SINK_HARDWARE) || s == u->sink)
1083 if (!output_new(u, s)) {
1084 pa_log("Failed to create sink input on sink '%s'.", s->name);
1089 u->sink_new_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_PUT], PA_HOOK_LATE, (pa_hook_cb_t) sink_new_hook_cb, u);
1092 u->sink_unlink_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_UNLINK], PA_HOOK_EARLY, (pa_hook_cb_t) sink_unlink_hook_cb, u);
1093 u->sink_state_changed_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_STATE_CHANGED], PA_HOOK_NORMAL, (pa_hook_cb_t) sink_state_changed_hook_cb, u);
1095 pick_master(u, NULL);
1097 if (!(u->thread = pa_thread_new(thread_func, u))) {
1098 pa_log("Failed to create thread.");
1102 /* Activate the sink and the sink inputs */
1103 pa_sink_put(u->sink);
1105 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx))
1107 pa_sink_input_put(o->sink_input);
1109 if (u->adjust_time > 0) {
1111 pa_gettimeofday(&tv);
1112 tv.tv_sec += u->adjust_time;
1113 u->time_event = m->core->mainloop->time_new(m->core->mainloop, &tv, time_callback, u);
1116 pa_modargs_free(ma);
1123 pa_modargs_free(ma);
1130 static void output_free(struct output *o) {
1133 pick_master(o->userdata, o);
1137 pa_assert_se(pa_idxset_remove_by_data(o->userdata->outputs, o, NULL));
1139 update_description(o->userdata);
1141 if (o->inq_rtpoll_item)
1142 pa_rtpoll_item_free(o->inq_rtpoll_item);
1144 if (o->outq_rtpoll_item)
1145 pa_rtpoll_item_free(o->outq_rtpoll_item);
1148 pa_asyncmsgq_unref(o->inq);
1151 pa_asyncmsgq_unref(o->outq);
1154 pa_memblockq_free(o->memblockq);
1159 void pa__done(pa_module*m) {
1165 if (!(u = m->userdata))
1168 if (u->sink_new_slot)
1169 pa_hook_slot_free(u->sink_new_slot);
1171 if (u->sink_unlink_slot)
1172 pa_hook_slot_free(u->sink_unlink_slot);
1174 if (u->sink_state_changed_slot)
1175 pa_hook_slot_free(u->sink_state_changed_slot);
1178 while ((o = pa_idxset_first(u->outputs, NULL)))
1181 pa_idxset_free(u->outputs, NULL, NULL);
1185 pa_sink_unlink(u->sink);
1188 pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
1189 pa_thread_free(u->thread);
1192 pa_thread_mq_done(&u->thread_mq);
1195 pa_sink_unref(u->sink);
1198 pa_rtpoll_free(u->rtpoll);
1201 u->core->mainloop->time_free(u->time_event);