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);
56 PA_MODULE_LOAD_ONCE(FALSE);
58 "sink_name=<name for the sink> "
59 "master=<master sink> "
60 "slaves=<slave sinks> "
61 "adjust_time=<seconds> "
62 "resample_method=<method> "
63 "format=<sample format> "
64 "channels=<number of channels> "
66 "channel_map=<channel map>");
68 #define DEFAULT_SINK_NAME "combined"
69 #define MEMBLOCKQ_MAXLENGTH (1024*1024*16)
71 #define DEFAULT_ADJUST_TIME 10
73 static const char* const valid_modargs[] = {
87 struct userdata *userdata;
90 pa_sink_input *sink_input;
92 pa_asyncmsgq *inq, /* Message queue from the sink thread to this sink input */
93 *outq; /* Message queue from this sink input to the sink thread */
94 pa_rtpoll_item *inq_rtpoll_item, *outq_rtpoll_item;
96 pa_memblockq *memblockq;
98 pa_usec_t total_latency;
100 PA_LLIST_FIELDS(struct output);
109 pa_thread_mq thread_mq;
112 pa_time_event *time_event;
113 uint32_t adjust_time;
118 pa_hook_slot *sink_new_slot, *sink_unlink_slot, *sink_state_changed_slot;
120 pa_resample_method_t resample_method;
122 struct timeval adjust_timestamp;
124 struct output *master;
125 pa_idxset* outputs; /* managed in main context */
128 PA_LLIST_HEAD(struct output, active_outputs); /* managed in IO thread context */
129 pa_atomic_t running; /* we cache that value here, so that every thread can query it cheaply */
130 struct timeval timestamp;
131 pa_bool_t in_null_mode;
136 SINK_MESSAGE_ADD_OUTPUT = PA_SINK_MESSAGE_MAX,
137 SINK_MESSAGE_REMOVE_OUTPUT,
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 output *o);
147 static void update_master(struct userdata *u, struct output *o);
148 static void 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)
165 if (!PA_SINK_OPENED(pa_sink_get_state(u->sink)))
168 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx)) {
169 pa_usec_t sink_latency;
171 if (!o->sink_input || !PA_SINK_OPENED(pa_sink_get_state(o->sink)))
174 sink_latency = pa_sink_get_latency(o->sink);
175 o->total_latency = sink_latency + pa_sink_input_get_latency(o->sink_input);
177 if (sink_latency > max_sink_latency)
178 max_sink_latency = sink_latency;
180 if (min_total_latency == (pa_usec_t) -1 || o->total_latency < min_total_latency)
181 min_total_latency = o->total_latency;
184 if (min_total_latency == (pa_usec_t) -1)
187 target_latency = max_sink_latency > min_total_latency ? max_sink_latency : min_total_latency;
189 pa_log_info("[%s] target latency is %0.0f usec.", u->sink->name, (float) target_latency);
190 pa_log_info("[%s] master %s latency %0.0f usec.", u->sink->name, u->master->sink->name, (float) u->master->total_latency);
192 base_rate = u->sink->sample_spec.rate;
194 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx)) {
195 uint32_t r = base_rate;
197 if (!o->sink_input || !PA_SINK_OPENED(pa_sink_get_state(o->sink)))
200 if (o->total_latency < target_latency)
201 r -= (uint32_t) (((((double) target_latency - o->total_latency))/u->adjust_time)*r/PA_USEC_PER_SEC);
202 else if (o->total_latency > target_latency)
203 r += (uint32_t) (((((double) o->total_latency - target_latency))/u->adjust_time)*r/PA_USEC_PER_SEC);
205 if (r < (uint32_t) (base_rate*0.9) || r > (uint32_t) (base_rate*1.1)) {
206 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);
207 pa_sink_input_set_rate(o->sink_input, base_rate);
209 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);
210 pa_sink_input_set_rate(o->sink_input, r);
215 static void time_callback(pa_mainloop_api*a, pa_time_event* e, const struct timeval *tv, void *userdata) {
216 struct userdata *u = userdata;
221 pa_assert(u->time_event == e);
226 n.tv_sec += u->adjust_time;
227 u->sink->core->mainloop->time_restart(e, &n);
230 static void thread_func(void *userdata) {
231 struct userdata *u = userdata;
235 pa_log_debug("Thread starting up");
237 if (u->core->realtime_scheduling)
238 pa_make_realtime(u->core->realtime_priority+1);
240 pa_thread_mq_install(&u->thread_mq);
241 pa_rtpoll_install(u->rtpoll);
243 pa_rtclock_get(&u->thread_info.timestamp);
244 u->thread_info.in_null_mode = FALSE;
249 /* If no outputs are connected, render some data and drop it immediately. */
250 if (u->sink->thread_info.state == PA_SINK_RUNNING && !u->thread_info.active_outputs) {
253 /* Just rewind if necessary, since we are in NULL mode, we
254 * don't have to pass this on */
255 pa_sink_process_rewind(u->sink);
257 pa_rtclock_get(&now);
259 if (!u->thread_info.in_null_mode || pa_timeval_cmp(&u->thread_info.timestamp, &now) <= 0) {
260 pa_sink_skip(u->sink, u->block_size);
262 if (!u->thread_info.in_null_mode)
263 u->thread_info.timestamp = now;
265 pa_timeval_add(&u->thread_info.timestamp, pa_bytes_to_usec(u->block_size, &u->sink->sample_spec));
268 pa_rtpoll_set_timer_absolute(u->rtpoll, &u->thread_info.timestamp);
269 u->thread_info.in_null_mode = TRUE;
272 pa_rtpoll_set_timer_disabled(u->rtpoll);
273 u->thread_info.in_null_mode = FALSE;
276 /* Hmm, nothing to do. Let's sleep */
277 if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0) {
278 pa_log_info("pa_rtpoll_run() = %i", ret);
287 /* If this was no regular exit from the loop we have to continue
288 * processing messages until we received PA_MESSAGE_SHUTDOWN */
289 pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
290 pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
293 pa_log_debug("Thread shutting down");
296 /* Called from I/O thread context */
297 static void render_memblock(struct userdata *u, struct output *o, size_t length) {
301 /* We are run by the sink thread, on behalf of an output (o). The
302 * other output is waiting for us, hence it is safe to access its
303 * mainblockq and asyncmsgq directly. */
305 /* If we are not running, we cannot produce any data */
306 if (!pa_atomic_load(&u->thread_info.running))
309 /* Maybe there's some data in the requesting output's queue
311 while (pa_asyncmsgq_process_one(o->inq) > 0)
314 /* Ok, now let's prepare some data if we really have to */
315 while (!pa_memblockq_is_readable(o->memblockq)) {
320 pa_sink_render(u->sink, length, &chunk);
322 /* OK, let's send this data to the other threads */
323 for (j = u->thread_info.active_outputs; j; j = j->next)
325 /* Send to other outputs, which are not the requesting
329 pa_asyncmsgq_post(j->inq, PA_MSGOBJECT(j->sink_input), SINK_INPUT_MESSAGE_POST, NULL, 0, &chunk, NULL);
331 /* And place it directly into the requesting output's queue */
333 pa_memblockq_push_align(o->memblockq, &chunk);
335 pa_memblock_unref(chunk.memblock);
339 /* Called from I/O thread context */
340 static void request_memblock(struct output *o, size_t length) {
342 pa_sink_input_assert_ref(o->sink_input);
343 pa_sink_assert_ref(o->userdata->sink);
345 /* If another thread already prepared some data we received
346 * the data over the asyncmsgq, hence let's first process
348 while (pa_asyncmsgq_process_one(o->inq) > 0)
351 /* Check whether we're now readable */
352 if (pa_memblockq_is_readable(o->memblockq))
355 /* OK, we need to prepare new data, but only if the sink is actually running */
356 if (pa_atomic_load(&o->userdata->thread_info.running))
357 pa_asyncmsgq_send(o->outq, PA_MSGOBJECT(o->userdata->sink), SINK_MESSAGE_NEED, o, length, NULL);
360 /* Called from I/O thread context */
361 static int sink_input_pop_cb(pa_sink_input *i, size_t nbytes, pa_memchunk *chunk) {
364 pa_sink_input_assert_ref(i);
365 pa_assert_se(o = i->userdata);
367 /* If necessary, get some new data */
368 request_memblock(o, nbytes);
370 if (pa_memblockq_peek(o->memblockq, chunk) < 0)
373 pa_memblockq_drop(o->memblockq, chunk->length);
377 /* Called from I/O thread context */
378 static void sink_input_attach_cb(pa_sink_input *i) {
381 pa_sink_input_assert_ref(i);
382 pa_assert_se(o = i->userdata);
384 /* Set up the queue from the sink thread to us */
385 pa_assert(!o->inq_rtpoll_item);
386 o->inq_rtpoll_item = pa_rtpoll_item_new_asyncmsgq(
388 PA_RTPOLL_LATE, /* This one is not that important, since we check for data in _peek() anyway. */
392 /* Called from I/O thread context */
393 static void sink_input_detach_cb(pa_sink_input *i) {
396 pa_sink_input_assert_ref(i);
397 pa_assert_se(o = i->userdata);
399 /* Shut down the queue from the sink thread to us */
400 pa_assert(o->inq_rtpoll_item);
401 pa_rtpoll_item_free(o->inq_rtpoll_item);
402 o->inq_rtpoll_item = NULL;
405 /* Called from main context */
406 static void sink_input_kill_cb(pa_sink_input *i) {
409 pa_sink_input_assert_ref(i);
410 pa_assert(o = i->userdata);
412 pa_module_unload_request(o->userdata->module);
416 /* Called from thread context */
417 static int sink_input_process_msg(pa_msgobject *obj, int code, void *data, int64_t offset, pa_memchunk *chunk) {
418 struct output *o = PA_SINK_INPUT(obj)->userdata;
422 case PA_SINK_INPUT_MESSAGE_GET_LATENCY: {
425 *r = pa_bytes_to_usec(pa_memblockq_get_length(o->memblockq), &o->sink_input->sample_spec);
427 /* Fall through, the default handler will add in the extra
428 * latency added by the resampler */
432 case SINK_INPUT_MESSAGE_POST:
434 if (PA_SINK_OPENED(o->sink_input->sink->thread_info.state))
435 pa_memblockq_push_align(o->memblockq, chunk);
437 pa_memblockq_flush(o->memblockq);
443 return pa_sink_input_process_msg(obj, code, data, offset, chunk);
446 /* Called from main context */
447 static void disable_output(struct output *o) {
453 pa_asyncmsgq_send(o->userdata->sink->asyncmsgq, PA_MSGOBJECT(o->userdata->sink), SINK_MESSAGE_REMOVE_OUTPUT, o, 0, NULL);
454 pa_sink_input_unlink(o->sink_input);
455 pa_sink_input_unref(o->sink_input);
456 o->sink_input = NULL;
460 /* Called from main context */
461 static void enable_output(struct output *o) {
467 if (output_create_sink_input(o) >= 0) {
469 pa_memblockq_flush(o->memblockq);
471 pa_sink_input_put(o->sink_input);
473 if (o->userdata->sink && PA_SINK_LINKED(pa_sink_get_state(o->userdata->sink)))
474 pa_asyncmsgq_send(o->userdata->sink->asyncmsgq, PA_MSGOBJECT(o->userdata->sink), SINK_MESSAGE_ADD_OUTPUT, o, 0, NULL);
478 /* Called from main context */
479 static void suspend(struct userdata *u) {
485 /* Let's suspend by unlinking all streams */
486 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx))
489 pick_master(u, NULL);
491 pa_log_info("Device suspended...");
494 /* Called from main context */
495 static void unsuspend(struct userdata *u) {
502 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx)) {
504 pa_sink_suspend(o->sink, FALSE);
506 if (PA_SINK_OPENED(pa_sink_get_state(o->sink)))
510 pick_master(u, NULL);
512 pa_log_info("Resumed successfully...");
515 /* Called from main context */
516 static int sink_set_state(pa_sink *sink, pa_sink_state_t state) {
519 pa_sink_assert_ref(sink);
520 pa_assert_se(u = sink->userdata);
522 /* Please note that in contrast to the ALSA modules we call
523 * suspend/unsuspend from main context here! */
526 case PA_SINK_SUSPENDED:
527 pa_assert(PA_SINK_OPENED(pa_sink_get_state(u->sink)));
533 case PA_SINK_RUNNING:
535 if (pa_sink_get_state(u->sink) == PA_SINK_SUSPENDED)
540 case PA_SINK_UNLINKED:
548 /* Called from thread context of the master */
549 static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
550 struct userdata *u = PA_SINK(o)->userdata;
554 case PA_SINK_MESSAGE_SET_STATE:
555 pa_atomic_store(&u->thread_info.running, PA_PTR_TO_UINT(data) == PA_SINK_RUNNING);
558 case PA_SINK_MESSAGE_GET_LATENCY:
560 /* This code will only be called when running in NULL
561 * mode, i.e. when no output is attached. See
562 * sink_get_latency_cb() below */
564 if (u->thread_info.in_null_mode) {
567 if (pa_timeval_cmp(&u->thread_info.timestamp, pa_rtclock_get(&now)) > 0) {
568 *((pa_usec_t*) data) = pa_timeval_diff(&u->thread_info.timestamp, &now);
573 *((pa_usec_t*) data) = 0;
577 case SINK_MESSAGE_ADD_OUTPUT: {
578 struct output *op = data;
580 PA_LLIST_PREPEND(struct output, u->thread_info.active_outputs, op);
582 pa_assert(!op->outq_rtpoll_item);
584 /* Create pa_asyncmsgq to the sink thread */
586 op->outq_rtpoll_item = pa_rtpoll_item_new_asyncmsgq(
588 PA_RTPOLL_EARLY-1, /* This item is very important */
594 case SINK_MESSAGE_REMOVE_OUTPUT: {
595 struct output *op = data;
597 PA_LLIST_REMOVE(struct output, u->thread_info.active_outputs, op);
599 /* Remove the q that leads from this output to the sink thread */
601 pa_assert(op->outq_rtpoll_item);
602 pa_rtpoll_item_free(op->outq_rtpoll_item);
603 op->outq_rtpoll_item = NULL;
608 case SINK_MESSAGE_NEED:
609 render_memblock(u, data, (size_t) offset);
613 return pa_sink_process_msg(o, code, data, offset, chunk);
616 /* Called from main context */
617 static pa_usec_t sink_get_latency_cb(pa_sink *s) {
620 pa_sink_assert_ref(s);
621 pa_assert_se(u = s->userdata);
624 /* If we have a master sink, we just return the latency of it
625 * and add our own buffering on top */
627 if (!u->master->sink_input)
631 pa_sink_input_get_latency(u->master->sink_input) +
632 pa_sink_get_latency(u->master->sink);
637 /* We have no master, hence let's ask our own thread which
638 * implements the NULL sink */
640 if (pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
647 static void update_description(struct userdata *u) {
655 if (pa_idxset_isempty(u->outputs)) {
656 pa_sink_set_description(u->sink, "Simultaneous output");
660 t = pa_xstrdup("Simultaneous output to");
662 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx)) {
666 e = pa_sprintf_malloc("%s %s", t, pa_strnull(pa_proplist_gets(o->sink->proplist, PA_PROP_DEVICE_DESCRIPTION)));
669 e = pa_sprintf_malloc("%s, %s", t, pa_strnull(pa_proplist_gets(o->sink->proplist, PA_PROP_DEVICE_DESCRIPTION)));
675 pa_sink_set_description(u->sink, t);
679 static void update_master(struct userdata *u, struct output *o) {
686 pa_log_info("Master sink is now '%s'", o->sink_input->sink->name);
688 pa_log_info("No master selected, lacking suitable outputs.");
691 static void pick_master(struct userdata *u, struct output *except) {
697 u->master != except &&
698 u->master->sink_input &&
699 PA_SINK_OPENED(pa_sink_get_state(u->master->sink))) {
700 update_master(u, u->master);
704 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx))
707 PA_SINK_OPENED(pa_sink_get_state(o->sink))) {
712 update_master(u, NULL);
715 static int output_create_sink_input(struct output *o) {
716 pa_sink_input_new_data data;
724 t = pa_sprintf_malloc("Simultaneous output on %s", pa_strnull(pa_proplist_gets(o->sink->proplist, PA_PROP_DEVICE_DESCRIPTION)));
726 pa_sink_input_new_data_init(&data);
728 data.driver = __FILE__;
729 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_DESCRIPTION, t);
730 pa_sink_input_new_data_set_sample_spec(&data, &o->userdata->sink->sample_spec);
731 pa_sink_input_new_data_set_channel_map(&data, &o->userdata->sink->channel_map);
732 data.module = o->userdata->module;
733 data.resample_method = o->userdata->resample_method;
735 o->sink_input = pa_sink_input_new(o->userdata->core, &data, PA_SINK_INPUT_VARIABLE_RATE|PA_SINK_INPUT_DONT_MOVE);
737 pa_sink_input_new_data_done(&data);
744 o->sink_input->parent.process_msg = sink_input_process_msg;
745 o->sink_input->pop = sink_input_pop_cb;
746 o->sink_input->attach = sink_input_attach_cb;
747 o->sink_input->detach = sink_input_detach_cb;
748 o->sink_input->kill = sink_input_kill_cb;
749 o->sink_input->userdata = o;
755 static struct output *output_new(struct userdata *u, pa_sink *sink) {
762 o = pa_xnew(struct output, 1);
764 o->inq = pa_asyncmsgq_new(0);
765 o->outq = pa_asyncmsgq_new(0);
766 o->inq_rtpoll_item = NULL;
767 o->outq_rtpoll_item = NULL;
769 o->sink_input = NULL;
770 o->memblockq = pa_memblockq_new(
774 pa_frame_size(&u->sink->sample_spec),
780 pa_assert_se(pa_idxset_put(u->outputs, o, NULL) == 0);
782 if (u->sink && PA_SINK_LINKED(pa_sink_get_state(u->sink)))
783 pa_asyncmsgq_send(u->sink->asyncmsgq, PA_MSGOBJECT(u->sink), SINK_MESSAGE_ADD_OUTPUT, o, 0, NULL);
785 /* If the sink is not yet started, we need to do the activation ourselves */
786 PA_LLIST_PREPEND(struct output, u->thread_info.active_outputs, o);
788 o->outq_rtpoll_item = pa_rtpoll_item_new_asyncmsgq(
790 PA_RTPOLL_EARLY-1, /* This item is very important */
794 if (PA_SINK_OPENED(pa_sink_get_state(u->sink)) || pa_sink_get_state(u->sink) == PA_SINK_INIT) {
795 pa_sink_suspend(sink, FALSE);
797 if (PA_SINK_OPENED(pa_sink_get_state(sink)))
798 if (output_create_sink_input(o) < 0)
803 update_description(u);
810 pa_idxset_remove_by_data(u->outputs, o, NULL);
813 pa_sink_input_unlink(o->sink_input);
814 pa_sink_input_unref(o->sink_input);
818 pa_memblockq_free(o->memblockq);
821 pa_asyncmsgq_unref(o->inq);
824 pa_asyncmsgq_unref(o->outq);
832 static pa_hook_result_t sink_new_hook_cb(pa_core *c, pa_sink *s, struct userdata* u) {
835 pa_core_assert_ref(c);
836 pa_sink_assert_ref(s);
838 pa_assert(u->automatic);
840 if (!(s->flags & PA_SINK_HARDWARE) || s == u->sink)
843 pa_log_info("Configuring new sink: %s", s->name);
845 if (!(o = output_new(u, s))) {
846 pa_log("Failed to create sink input on sink '%s'.", s->name);
851 pa_sink_input_put(o->sink_input);
853 pick_master(u, NULL);
858 static pa_hook_result_t sink_unlink_hook_cb(pa_core *c, pa_sink *s, struct userdata* u) {
863 pa_sink_assert_ref(s);
869 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx))
876 pa_log_info("Unconfiguring sink: %s", s->name);
883 static pa_hook_result_t sink_state_changed_hook_cb(pa_core *c, pa_sink *s, struct userdata* u) {
886 pa_sink_state_t state;
891 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx))
898 state = pa_sink_get_state(s);
900 if (PA_SINK_OPENED(state) && PA_SINK_OPENED(pa_sink_get_state(u->sink)) && !o->sink_input) {
902 pick_master(u, NULL);
905 if (state == PA_SINK_SUSPENDED && o->sink_input) {
913 int pa__init(pa_module*m) {
915 pa_modargs *ma = NULL;
916 const char *master_name, *slaves, *rm;
917 pa_sink *master_sink = NULL;
918 int resample_method = PA_RESAMPLER_TRIVIAL;
923 pa_sink_new_data data;
927 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
928 pa_log("failed to parse module arguments");
932 if ((rm = pa_modargs_get_value(ma, "resample_method", NULL))) {
933 if ((resample_method = pa_parse_resample_method(rm)) < 0) {
934 pa_log("invalid resample method '%s'", rm);
939 u = pa_xnew(struct userdata, 1);
945 u->time_event = NULL;
946 u->adjust_time = DEFAULT_ADJUST_TIME;
947 pa_thread_mq_init(&u->thread_mq, m->core->mainloop);
948 u->rtpoll = pa_rtpoll_new();
950 u->resample_method = resample_method;
951 u->outputs = pa_idxset_new(NULL, NULL);
952 memset(&u->adjust_timestamp, 0, sizeof(u->adjust_timestamp));
953 u->sink_new_slot = u->sink_unlink_slot = u->sink_state_changed_slot = NULL;
954 PA_LLIST_HEAD_INIT(struct output, u->thread_info.active_outputs);
955 pa_atomic_store(&u->thread_info.running, FALSE);
956 u->thread_info.in_null_mode = FALSE;
957 pa_rtpoll_item_new_asyncmsgq(u->rtpoll, PA_RTPOLL_EARLY, u->thread_mq.inq);
959 if (pa_modargs_get_value_u32(ma, "adjust_time", &u->adjust_time) < 0) {
960 pa_log("Failed to parse adjust_time value");
964 master_name = pa_modargs_get_value(ma, "master", NULL);
965 slaves = pa_modargs_get_value(ma, "slaves", NULL);
966 if (!master_name != !slaves) {
967 pa_log("No master or slave sinks specified");
972 if (!(master_sink = pa_namereg_get(m->core, master_name, PA_NAMEREG_SINK, 1))) {
973 pa_log("Invalid master sink '%s'", master_name);
977 ss = master_sink->sample_spec;
978 u->automatic = FALSE;
981 ss = m->core->default_sample_spec;
985 if ((pa_modargs_get_sample_spec(ma, &ss) < 0)) {
986 pa_log("Invalid sample specification.");
990 if (master_sink && ss.channels == master_sink->sample_spec.channels)
991 map = master_sink->channel_map;
993 pa_assert_se(pa_channel_map_init_auto(&map, ss.channels, PA_CHANNEL_MAP_AUX));
994 pa_channel_map_init_auto(&map, ss.channels, PA_CHANNEL_MAP_DEFAULT);
997 if ((pa_modargs_get_channel_map(ma, NULL, &map) < 0)) {
998 pa_log("Invalid channel map.");
1002 if (ss.channels != map.channels) {
1003 pa_log("Channel map and sample specification don't match.");
1007 pa_sink_new_data_init(&data);
1008 data.name = pa_xstrdup(pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME));
1009 data.namereg_fail = FALSE;
1010 data.driver = __FILE__;
1012 pa_sink_new_data_set_sample_spec(&data, &ss);
1013 pa_sink_new_data_set_channel_map(&data, &map);
1014 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_DESCRIPTION, "Simultaneous Output");
1016 u->sink = pa_sink_new(m->core, &data, PA_SINK_LATENCY);
1017 pa_sink_new_data_done(&data);
1020 pa_log("Failed to create sink");
1024 u->sink->parent.process_msg = sink_process_msg;
1025 u->sink->get_latency = sink_get_latency_cb;
1026 u->sink->set_state = sink_set_state;
1027 u->sink->userdata = u;
1029 pa_sink_set_rtpoll(u->sink, u->rtpoll);
1030 pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
1032 u->block_size = pa_bytes_per_second(&ss) / 20; /* 50 ms */
1033 if (u->block_size <= 0)
1034 u->block_size = pa_frame_size(&ss);
1036 if (!u->automatic) {
1037 const char*split_state;
1041 /* The master and slaves have been specified manually */
1043 if (!(u->master = output_new(u, master_sink))) {
1044 pa_log("Failed to create master sink input on sink '%s'.", master_sink->name);
1049 while ((n = pa_split(slaves, ",", &split_state))) {
1050 pa_sink *slave_sink;
1052 if (!(slave_sink = pa_namereg_get(m->core, n, PA_NAMEREG_SINK, 1)) || slave_sink == u->sink) {
1053 pa_log("Invalid slave sink '%s'", n);
1060 if (!output_new(u, slave_sink)) {
1061 pa_log("Failed to create slave sink input on sink '%s'.", slave_sink->name);
1066 if (pa_idxset_size(u->outputs) <= 1)
1067 pa_log_warn("No slave sinks specified.");
1069 u->sink_new_slot = NULL;
1074 /* We're in automatic mode, we elect one hw sink to the master
1075 * and attach all other hw sinks as slaves to it */
1077 for (s = pa_idxset_first(m->core->sinks, &idx); s; s = pa_idxset_next(m->core->sinks, &idx)) {
1079 if (!(s->flags & PA_SINK_HARDWARE) || s == u->sink)
1082 if (!output_new(u, s)) {
1083 pa_log("Failed to create sink input on sink '%s'.", s->name);
1088 u->sink_new_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_PUT], (pa_hook_cb_t) sink_new_hook_cb, u);
1091 u->sink_unlink_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_UNLINK], (pa_hook_cb_t) sink_unlink_hook_cb, u);
1092 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);
1094 pick_master(u, NULL);
1096 if (!(u->thread = pa_thread_new(thread_func, u))) {
1097 pa_log("Failed to create thread.");
1101 /* Activate the sink and the sink inputs */
1102 pa_sink_put(u->sink);
1104 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx))
1106 pa_sink_input_put(o->sink_input);
1108 if (u->adjust_time > 0) {
1110 pa_gettimeofday(&tv);
1111 tv.tv_sec += u->adjust_time;
1112 u->time_event = m->core->mainloop->time_new(m->core->mainloop, &tv, time_callback, u);
1115 pa_modargs_free(ma);
1122 pa_modargs_free(ma);
1129 static void output_free(struct output *o) {
1132 pick_master(o->userdata, o);
1136 pa_assert_se(pa_idxset_remove_by_data(o->userdata->outputs, o, NULL));
1138 update_description(o->userdata);
1140 if (o->inq_rtpoll_item)
1141 pa_rtpoll_item_free(o->inq_rtpoll_item);
1143 if (o->outq_rtpoll_item)
1144 pa_rtpoll_item_free(o->outq_rtpoll_item);
1147 pa_asyncmsgq_unref(o->inq);
1150 pa_asyncmsgq_unref(o->outq);
1153 pa_memblockq_free(o->memblockq);
1158 void pa__done(pa_module*m) {
1164 if (!(u = m->userdata))
1167 if (u->sink_new_slot)
1168 pa_hook_slot_free(u->sink_new_slot);
1170 if (u->sink_unlink_slot)
1171 pa_hook_slot_free(u->sink_unlink_slot);
1173 if (u->sink_state_changed_slot)
1174 pa_hook_slot_free(u->sink_state_changed_slot);
1177 while ((o = pa_idxset_first(u->outputs, NULL)))
1180 pa_idxset_free(u->outputs, NULL, NULL);
1184 pa_sink_unlink(u->sink);
1187 pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
1188 pa_thread_free(u->thread);
1191 pa_thread_mq_done(&u->thread_mq);
1194 pa_sink_unref(u->sink);
1197 pa_rtpoll_free(u->rtpoll);
1200 u->core->mainloop->time_free(u->time_event);