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;
89 pa_sink_input *sink_input;
91 pa_asyncmsgq *inq, /* Message queue from the sink thread to this sink input */
92 *outq; /* Message queue from this sink input to the sink thread */
93 pa_rtpoll_item *inq_rtpoll_item, *outq_rtpoll_item;
95 pa_memblockq *memblockq;
97 pa_usec_t total_latency;
99 PA_LLIST_FIELDS(struct output);
108 pa_thread_mq thread_mq;
111 pa_time_event *time_event;
112 uint32_t adjust_time;
117 pa_hook_slot *sink_new_slot, *sink_unlink_slot, *sink_state_changed_slot;
119 pa_resample_method_t resample_method;
121 struct timeval adjust_timestamp;
123 struct output *master;
124 pa_idxset* outputs; /* managed in main context */
127 PA_LLIST_HEAD(struct output, active_outputs); /* managed in IO thread context */
128 pa_atomic_t running; /* we cache that value here, so that every thread can query it cheaply */
129 struct timeval timestamp;
130 pa_bool_t in_null_mode;
135 SINK_MESSAGE_ADD_OUTPUT = PA_SINK_MESSAGE_MAX,
136 SINK_MESSAGE_REMOVE_OUTPUT,
141 SINK_INPUT_MESSAGE_POST = PA_SINK_INPUT_MESSAGE_MAX
144 static void output_free(struct output *o);
145 static int output_create_sink_input(struct output *o);
146 static void update_master(struct userdata *u, struct output *o);
147 static void pick_master(struct userdata *u, struct output *except);
149 static void adjust_rates(struct userdata *u) {
151 pa_usec_t max_sink_latency = 0, min_total_latency = (pa_usec_t) -1, target_latency;
156 pa_sink_assert_ref(u->sink);
158 if (pa_idxset_size(u->outputs) <= 0)
164 if (!PA_SINK_OPENED(pa_sink_get_state(u->sink)))
167 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx)) {
168 pa_usec_t sink_latency;
170 if (!o->sink_input || !PA_SINK_OPENED(pa_sink_get_state(o->sink)))
173 sink_latency = pa_sink_get_latency(o->sink);
174 o->total_latency = sink_latency + pa_sink_input_get_latency(o->sink_input);
176 if (sink_latency > max_sink_latency)
177 max_sink_latency = sink_latency;
179 if (min_total_latency == (pa_usec_t) -1 || o->total_latency < min_total_latency)
180 min_total_latency = o->total_latency;
183 if (min_total_latency == (pa_usec_t) -1)
186 target_latency = max_sink_latency > min_total_latency ? max_sink_latency : min_total_latency;
188 pa_log_info("[%s] target latency is %0.0f usec.", u->sink->name, (float) target_latency);
189 pa_log_info("[%s] master %s latency %0.0f usec.", u->sink->name, u->master->sink->name, (float) u->master->total_latency);
191 base_rate = u->sink->sample_spec.rate;
193 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx)) {
194 uint32_t r = base_rate;
196 if (!o->sink_input || !PA_SINK_OPENED(pa_sink_get_state(o->sink)))
199 if (o->total_latency < target_latency)
200 r -= (uint32_t) (((((double) target_latency - o->total_latency))/u->adjust_time)*r/PA_USEC_PER_SEC);
201 else if (o->total_latency > target_latency)
202 r += (uint32_t) (((((double) o->total_latency - target_latency))/u->adjust_time)*r/PA_USEC_PER_SEC);
204 if (r < (uint32_t) (base_rate*0.9) || r > (uint32_t) (base_rate*1.1)) {
205 pa_log_warn("[%s] sample rates too different, not adjusting (%u vs. %u).", o->sink_input->name, base_rate, r);
206 pa_sink_input_set_rate(o->sink_input, base_rate);
208 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);
209 pa_sink_input_set_rate(o->sink_input, r);
214 static void time_callback(pa_mainloop_api*a, pa_time_event* e, const struct timeval *tv, void *userdata) {
215 struct userdata *u = userdata;
220 pa_assert(u->time_event == e);
225 n.tv_sec += u->adjust_time;
226 u->sink->core->mainloop->time_restart(e, &n);
229 static void thread_func(void *userdata) {
230 struct userdata *u = userdata;
234 pa_log_debug("Thread starting up");
236 if (u->core->high_priority)
239 pa_thread_mq_install(&u->thread_mq);
240 pa_rtpoll_install(u->rtpoll);
242 pa_rtclock_get(&u->thread_info.timestamp);
243 u->thread_info.in_null_mode = FALSE;
248 /* If no outputs are connected, render some data and drop it immediately. */
249 if (u->sink->thread_info.state == PA_SINK_RUNNING && !u->thread_info.active_outputs) {
252 pa_rtclock_get(&now);
254 if (!u->thread_info.in_null_mode || pa_timeval_cmp(&u->thread_info.timestamp, &now) <= 0) {
255 pa_sink_skip(u->sink, u->block_size);
257 if (!u->thread_info.in_null_mode)
258 u->thread_info.timestamp = now;
260 pa_timeval_add(&u->thread_info.timestamp, pa_bytes_to_usec(u->block_size, &u->sink->sample_spec));
263 pa_rtpoll_set_timer_absolute(u->rtpoll, &u->thread_info.timestamp);
264 u->thread_info.in_null_mode = TRUE;
267 pa_rtpoll_set_timer_disabled(u->rtpoll);
268 u->thread_info.in_null_mode = FALSE;
271 /* Hmm, nothing to do. Let's sleep */
272 if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0) {
273 pa_log_info("pa_rtpoll_run() = %i", ret);
282 /* If this was no regular exit from the loop we have to continue
283 * processing messages until we received PA_MESSAGE_SHUTDOWN */
284 pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
285 pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
288 pa_log_debug("Thread shutting down");
291 /* Called from I/O thread context */
292 static void render_memblock(struct userdata *u, struct output *o, size_t length) {
296 /* We are run by the sink thread, on behalf of an output (o). The
297 * other output is waiting for us, hence it is safe to access its
298 * mainblockq and asyncmsgq directly. */
300 /* If we are not running, we cannot produce any data */
301 if (!pa_atomic_load(&u->thread_info.running))
304 /* Maybe there's some data in the requesting output's queue
306 while (pa_asyncmsgq_process_one(o->inq) > 0)
309 /* Ok, now let's prepare some data if we really have to */
310 while (!pa_memblockq_is_readable(o->memblockq)) {
315 pa_sink_render(u->sink, length, &chunk);
317 /* OK, let's send this data to the other threads */
318 for (j = u->thread_info.active_outputs; j; j = j->next)
320 /* Send to other outputs, which are not the requesting
324 pa_asyncmsgq_post(j->inq, PA_MSGOBJECT(j->sink_input), SINK_INPUT_MESSAGE_POST, NULL, 0, &chunk, NULL);
326 /* And place it directly into the requesting output's queue */
328 pa_memblockq_push_align(o->memblockq, &chunk);
330 pa_memblock_unref(chunk.memblock);
334 /* Called from I/O thread context */
335 static void request_memblock(struct output *o, size_t length) {
337 pa_sink_input_assert_ref(o->sink_input);
338 pa_sink_assert_ref(o->userdata->sink);
340 /* If another thread already prepared some data we received
341 * the data over the asyncmsgq, hence let's first process
343 while (pa_asyncmsgq_process_one(o->inq) > 0)
346 /* Check whether we're now readable */
347 if (pa_memblockq_is_readable(o->memblockq))
350 /* OK, we need to prepare new data, but only if the sink is actually running */
351 if (pa_atomic_load(&o->userdata->thread_info.running))
352 pa_asyncmsgq_send(o->outq, PA_MSGOBJECT(o->userdata->sink), SINK_MESSAGE_NEED, o, length, NULL);
355 /* Called from I/O thread context */
356 static int sink_input_peek_cb(pa_sink_input *i, size_t length, pa_memchunk *chunk) {
359 pa_sink_input_assert_ref(i);
360 pa_assert_se(o = i->userdata);
362 /* If necessary, get some new data */
363 request_memblock(o, length);
365 return pa_memblockq_peek(o->memblockq, chunk);
368 /* Called from I/O thread context */
369 static void sink_input_drop_cb(pa_sink_input *i, size_t length) {
372 pa_sink_input_assert_ref(i);
373 pa_assert(length > 0);
374 pa_assert_se(o = i->userdata);
376 pa_memblockq_drop(o->memblockq, 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(
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_OPENED(o->sink_input->sink->thread_info.state))
437 pa_memblockq_push_align(o->memblockq, chunk);
439 pa_memblockq_flush(o->memblockq);
444 return pa_sink_input_process_msg(obj, code, data, offset, chunk);
447 /* Called from main context */
448 static void disable_output(struct output *o) {
454 pa_asyncmsgq_send(o->userdata->sink->asyncmsgq, PA_MSGOBJECT(o->userdata->sink), SINK_MESSAGE_REMOVE_OUTPUT, o, 0, NULL);
455 pa_sink_input_unlink(o->sink_input);
456 pa_sink_input_unref(o->sink_input);
457 o->sink_input = NULL;
461 /* Called from main context */
462 static void enable_output(struct output *o) {
468 if (output_create_sink_input(o) >= 0) {
470 pa_memblockq_flush(o->memblockq);
472 pa_sink_input_put(o->sink_input);
474 if (o->userdata->sink && PA_SINK_LINKED(pa_sink_get_state(o->userdata->sink)))
475 pa_asyncmsgq_send(o->userdata->sink->asyncmsgq, PA_MSGOBJECT(o->userdata->sink), SINK_MESSAGE_ADD_OUTPUT, o, 0, NULL);
479 /* Called from main context */
480 static void suspend(struct userdata *u) {
486 /* Let's suspend by unlinking all streams */
487 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx))
490 pick_master(u, NULL);
492 pa_log_info("Device suspended...");
495 /* Called from main context */
496 static void unsuspend(struct userdata *u) {
503 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx)) {
505 pa_sink_suspend(o->sink, FALSE);
507 if (PA_SINK_OPENED(pa_sink_get_state(o->sink)))
511 pick_master(u, NULL);
513 pa_log_info("Resumed successfully...");
516 /* Called from main context */
517 static int sink_set_state(pa_sink *sink, pa_sink_state_t state) {
520 pa_sink_assert_ref(sink);
521 pa_assert_se(u = sink->userdata);
523 /* Please note that in contrast to the ALSA modules we call
524 * suspend/unsuspend from main context here! */
527 case PA_SINK_SUSPENDED:
528 pa_assert(PA_SINK_OPENED(pa_sink_get_state(u->sink)));
534 case PA_SINK_RUNNING:
536 if (pa_sink_get_state(u->sink) == PA_SINK_SUSPENDED)
541 case PA_SINK_UNLINKED:
549 /* Called from thread context of the master */
550 static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
551 struct userdata *u = PA_SINK(o)->userdata;
555 case PA_SINK_MESSAGE_SET_STATE:
556 pa_atomic_store(&u->thread_info.running, PA_PTR_TO_UINT(data) == PA_SINK_RUNNING);
559 case PA_SINK_MESSAGE_GET_LATENCY:
561 /* This code will only be called when running in NULL
562 * mode, i.e. when no output is attached. See
563 * sink_get_latency_cb() below */
565 if (u->thread_info.in_null_mode) {
568 if (pa_timeval_cmp(&u->thread_info.timestamp, pa_rtclock_get(&now)) > 0) {
569 *((pa_usec_t*) data) = pa_timeval_diff(&u->thread_info.timestamp, &now);
574 *((pa_usec_t*) data) = 0;
578 case SINK_MESSAGE_ADD_OUTPUT: {
579 struct output *op = data;
581 PA_LLIST_PREPEND(struct output, u->thread_info.active_outputs, op);
583 pa_assert(!op->outq_rtpoll_item);
585 /* Create pa_asyncmsgq to the sink thread */
587 op->outq_rtpoll_item = pa_rtpoll_item_new_asyncmsgq(
589 PA_RTPOLL_EARLY-1, /* This item is very important */
595 case SINK_MESSAGE_REMOVE_OUTPUT: {
596 struct output *op = data;
598 PA_LLIST_REMOVE(struct output, u->thread_info.active_outputs, op);
600 /* Remove the q that leads from this output to the sink thread */
602 pa_assert(op->outq_rtpoll_item);
603 pa_rtpoll_item_free(op->outq_rtpoll_item);
604 op->outq_rtpoll_item = NULL;
609 case SINK_MESSAGE_NEED:
610 render_memblock(u, data, (size_t) offset);
614 return pa_sink_process_msg(o, code, data, offset, chunk);
617 /* Called from main context */
618 static pa_usec_t sink_get_latency_cb(pa_sink *s) {
621 pa_sink_assert_ref(s);
622 pa_assert_se(u = s->userdata);
625 /* If we have a master sink, we just return the latency of it
626 * and add our own buffering on top */
628 if (!u->master->sink_input)
632 pa_sink_input_get_latency(u->master->sink_input) +
633 pa_sink_get_latency(u->master->sink);
638 /* We have no master, hence let's ask our own thread which
639 * implements the NULL sink */
641 if (pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
648 static void update_description(struct userdata *u) {
656 if (pa_idxset_isempty(u->outputs)) {
657 pa_sink_set_description(u->sink, "Simultaneous output");
661 t = pa_xstrdup("Simultaneous output to");
663 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx)) {
667 e = pa_sprintf_malloc("%s %s", t, o->sink->description);
670 e = pa_sprintf_malloc("%s, %s", t, o->sink->description);
676 pa_sink_set_description(u->sink, t);
680 static void update_master(struct userdata *u, struct output *o) {
687 pa_log_info("Master sink is now '%s'", o->sink_input->sink->name);
689 pa_log_info("No master selected, lacking suitable outputs.");
692 static void pick_master(struct userdata *u, struct output *except) {
698 u->master != except &&
699 u->master->sink_input &&
700 PA_SINK_OPENED(pa_sink_get_state(u->master->sink))) {
701 update_master(u, u->master);
705 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx))
708 PA_SINK_OPENED(pa_sink_get_state(o->sink))) {
713 update_master(u, NULL);
716 static int output_create_sink_input(struct output *o) {
717 pa_sink_input_new_data data;
725 t = pa_sprintf_malloc("Simultaneous output on %s", o->sink->description);
727 pa_sink_input_new_data_init(&data);
729 data.driver = __FILE__;
731 pa_sink_input_new_data_set_sample_spec(&data, &o->userdata->sink->sample_spec);
732 pa_sink_input_new_data_set_channel_map(&data, &o->userdata->sink->channel_map);
733 data.module = o->userdata->module;
734 data.resample_method = o->userdata->resample_method;
736 o->sink_input = pa_sink_input_new(o->userdata->core, &data, PA_SINK_INPUT_VARIABLE_RATE|PA_SINK_INPUT_DONT_MOVE);
743 o->sink_input->parent.process_msg = sink_input_process_msg;
744 o->sink_input->peek = sink_input_peek_cb;
745 o->sink_input->drop = sink_input_drop_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),
779 pa_assert_se(pa_idxset_put(u->outputs, o, NULL) == 0);
781 if (u->sink && PA_SINK_LINKED(pa_sink_get_state(u->sink)))
782 pa_asyncmsgq_send(u->sink->asyncmsgq, PA_MSGOBJECT(u->sink), SINK_MESSAGE_ADD_OUTPUT, o, 0, NULL);
784 /* If the sink is not yet started, we need to do the activation ourselves */
785 PA_LLIST_PREPEND(struct output, u->thread_info.active_outputs, o);
787 o->outq_rtpoll_item = pa_rtpoll_item_new_asyncmsgq(
789 PA_RTPOLL_EARLY-1, /* This item is very important */
793 if (PA_SINK_OPENED(pa_sink_get_state(u->sink)) || pa_sink_get_state(u->sink) == PA_SINK_INIT) {
794 pa_sink_suspend(sink, FALSE);
796 if (PA_SINK_OPENED(pa_sink_get_state(sink)))
797 if (output_create_sink_input(o) < 0)
802 update_description(u);
809 pa_idxset_remove_by_data(u->outputs, o, NULL);
812 pa_sink_input_unlink(o->sink_input);
813 pa_sink_input_unref(o->sink_input);
817 pa_memblockq_free(o->memblockq);
820 pa_asyncmsgq_unref(o->inq);
823 pa_asyncmsgq_unref(o->outq);
831 static pa_hook_result_t sink_new_hook_cb(pa_core *c, pa_sink *s, struct userdata* u) {
834 pa_core_assert_ref(c);
835 pa_sink_assert_ref(s);
837 pa_assert(u->automatic);
839 if (!(s->flags & PA_SINK_HARDWARE) || s == u->sink)
842 pa_log_info("Configuring new sink: %s", s->name);
844 if (!(o = output_new(u, s))) {
845 pa_log("Failed to create sink input on sink '%s'.", s->name);
850 pa_sink_input_put(o->sink_input);
852 pick_master(u, NULL);
857 static pa_hook_result_t sink_unlink_hook_cb(pa_core *c, pa_sink *s, struct userdata* u) {
862 pa_sink_assert_ref(s);
868 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx))
875 pa_log_info("Unconfiguring sink: %s", s->name);
882 static pa_hook_result_t sink_state_changed_hook_cb(pa_core *c, pa_sink *s, struct userdata* u) {
885 pa_sink_state_t state;
890 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx))
897 state = pa_sink_get_state(s);
899 if (PA_SINK_OPENED(state) && PA_SINK_OPENED(pa_sink_get_state(u->sink)) && !o->sink_input) {
901 pick_master(u, NULL);
904 if (state == PA_SINK_SUSPENDED && o->sink_input) {
912 int pa__init(pa_module*m) {
914 pa_modargs *ma = NULL;
915 const char *master_name, *slaves, *rm;
916 pa_sink *master_sink = NULL;
917 int resample_method = PA_RESAMPLER_TRIVIAL;
925 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
926 pa_log("failed to parse module arguments");
930 if ((rm = pa_modargs_get_value(ma, "resample_method", NULL))) {
931 if ((resample_method = pa_parse_resample_method(rm)) < 0) {
932 pa_log("invalid resample method '%s'", rm);
937 u = pa_xnew(struct userdata, 1);
943 u->time_event = NULL;
944 u->adjust_time = DEFAULT_ADJUST_TIME;
945 pa_thread_mq_init(&u->thread_mq, m->core->mainloop);
946 u->rtpoll = pa_rtpoll_new();
948 u->resample_method = resample_method;
949 u->outputs = pa_idxset_new(NULL, NULL);
950 memset(&u->adjust_timestamp, 0, sizeof(u->adjust_timestamp));
951 u->sink_new_slot = u->sink_unlink_slot = u->sink_state_changed_slot = NULL;
952 PA_LLIST_HEAD_INIT(struct output, u->thread_info.active_outputs);
953 pa_atomic_store(&u->thread_info.running, FALSE);
954 u->thread_info.in_null_mode = FALSE;
955 pa_rtpoll_item_new_asyncmsgq(u->rtpoll, PA_RTPOLL_EARLY, u->thread_mq.inq);
957 if (pa_modargs_get_value_u32(ma, "adjust_time", &u->adjust_time) < 0) {
958 pa_log("Failed to parse adjust_time value");
962 master_name = pa_modargs_get_value(ma, "master", NULL);
963 slaves = pa_modargs_get_value(ma, "slaves", NULL);
964 if (!master_name != !slaves) {
965 pa_log("No master or slave sinks specified");
970 if (!(master_sink = pa_namereg_get(m->core, master_name, PA_NAMEREG_SINK, 1))) {
971 pa_log("Invalid master sink '%s'", master_name);
975 ss = master_sink->sample_spec;
976 u->automatic = FALSE;
979 ss = m->core->default_sample_spec;
983 if ((pa_modargs_get_sample_spec(ma, &ss) < 0)) {
984 pa_log("Invalid sample specification.");
988 if (master_sink && ss.channels == master_sink->sample_spec.channels)
989 map = master_sink->channel_map;
991 pa_channel_map_init_auto(&map, ss.channels, PA_CHANNEL_MAP_DEFAULT);
993 if ((pa_modargs_get_channel_map(ma, NULL, &map) < 0)) {
994 pa_log("Invalid channel map.");
998 if (ss.channels != map.channels) {
999 pa_log("Channel map and sample specification don't match.");
1003 if (!(u->sink = pa_sink_new(m->core, __FILE__, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME), 0, &ss, &map))) {
1004 pa_log("Failed to create sink");
1008 u->sink->parent.process_msg = sink_process_msg;
1009 u->sink->get_latency = sink_get_latency_cb;
1010 u->sink->set_state = sink_set_state;
1011 u->sink->userdata = u;
1013 u->sink->flags = PA_SINK_LATENCY;
1014 pa_sink_set_module(u->sink, m);
1015 pa_sink_set_description(u->sink, "Simultaneous output");
1016 pa_sink_set_rtpoll(u->sink, u->rtpoll);
1017 pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
1019 u->block_size = pa_bytes_per_second(&ss) / 20; /* 50 ms */
1020 if (u->block_size <= 0)
1021 u->block_size = pa_frame_size(&ss);
1023 if (!u->automatic) {
1024 const char*split_state;
1028 /* The master and slaves have been specified manually */
1030 if (!(u->master = output_new(u, master_sink))) {
1031 pa_log("Failed to create master sink input on sink '%s'.", master_sink->name);
1036 while ((n = pa_split(slaves, ",", &split_state))) {
1037 pa_sink *slave_sink;
1039 if (!(slave_sink = pa_namereg_get(m->core, n, PA_NAMEREG_SINK, 1)) || slave_sink == u->sink) {
1040 pa_log("Invalid slave sink '%s'", n);
1047 if (!output_new(u, slave_sink)) {
1048 pa_log("Failed to create slave sink input on sink '%s'.", slave_sink->name);
1053 if (pa_idxset_size(u->outputs) <= 1)
1054 pa_log_warn("No slave sinks specified.");
1056 u->sink_new_slot = NULL;
1061 /* We're in automatic mode, we elect one hw sink to the master
1062 * and attach all other hw sinks as slaves to it */
1064 for (s = pa_idxset_first(m->core->sinks, &idx); s; s = pa_idxset_next(m->core->sinks, &idx)) {
1066 if (!(s->flags & PA_SINK_HARDWARE) || s == u->sink)
1069 if (!output_new(u, s)) {
1070 pa_log("Failed to create sink input on sink '%s'.", s->name);
1075 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);
1078 u->sink_unlink_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_UNLINK], (pa_hook_cb_t) sink_unlink_hook_cb, u);
1079 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);
1081 pick_master(u, NULL);
1083 if (!(u->thread = pa_thread_new(thread_func, u))) {
1084 pa_log("Failed to create thread.");
1088 /* Activate the sink and the sink inputs */
1089 pa_sink_put(u->sink);
1091 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx))
1093 pa_sink_input_put(o->sink_input);
1095 if (u->adjust_time > 0) {
1097 pa_gettimeofday(&tv);
1098 tv.tv_sec += u->adjust_time;
1099 u->time_event = m->core->mainloop->time_new(m->core->mainloop, &tv, time_callback, u);
1102 pa_modargs_free(ma);
1109 pa_modargs_free(ma);
1116 static void output_free(struct output *o) {
1119 pick_master(o->userdata, o);
1123 pa_assert_se(pa_idxset_remove_by_data(o->userdata->outputs, o, NULL));
1125 update_description(o->userdata);
1127 if (o->inq_rtpoll_item)
1128 pa_rtpoll_item_free(o->inq_rtpoll_item);
1130 if (o->outq_rtpoll_item)
1131 pa_rtpoll_item_free(o->outq_rtpoll_item);
1134 pa_asyncmsgq_unref(o->inq);
1137 pa_asyncmsgq_unref(o->outq);
1140 pa_memblockq_free(o->memblockq);
1145 void pa__done(pa_module*m) {
1151 if (!(u = m->userdata))
1154 if (u->sink_new_slot)
1155 pa_hook_slot_free(u->sink_new_slot);
1157 if (u->sink_unlink_slot)
1158 pa_hook_slot_free(u->sink_unlink_slot);
1160 if (u->sink_state_changed_slot)
1161 pa_hook_slot_free(u->sink_state_changed_slot);
1164 while ((o = pa_idxset_first(u->outputs, NULL)))
1167 pa_idxset_free(u->outputs, NULL, NULL);
1171 pa_sink_unlink(u->sink);
1174 pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
1175 pa_thread_free(u->thread);
1178 pa_thread_mq_done(&u->thread_mq);
1181 pa_sink_unref(u->sink);
1184 pa_rtpoll_free(u->rtpoll);
1187 u->core->mainloop->time_free(u->time_event);