2 This file is part of PulseAudio.
4 Copyright 2004-2008 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>
48 #include <pulsecore/time-smoother.h>
50 #include "module-combine-symdef.h"
52 PA_MODULE_AUTHOR("Lennart Poettering");
53 PA_MODULE_DESCRIPTION("Combine multiple sinks to one");
54 PA_MODULE_VERSION(PACKAGE_VERSION);
55 PA_MODULE_LOAD_ONCE(FALSE);
57 "sink_name=<name for the 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"
68 #define MEMBLOCKQ_MAXLENGTH (1024*1024*16)
70 #define DEFAULT_ADJUST_TIME 10
72 #define REQUEST_LATENCY_USEC (PA_USEC_PER_MSEC * 200)
74 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_read, *inq_rtpoll_item_write;
95 pa_rtpoll_item *outq_rtpoll_item_read, *outq_rtpoll_item_write;
97 pa_memblockq *memblockq;
99 pa_usec_t total_latency;
101 pa_atomic_t max_request;
103 PA_LLIST_FIELDS(struct output);
112 pa_thread_mq thread_mq;
115 pa_time_event *time_event;
116 uint32_t adjust_time;
120 pa_hook_slot *sink_put_slot, *sink_unlink_slot, *sink_state_changed_slot;
122 pa_resample_method_t resample_method;
124 struct timeval adjust_timestamp;
126 pa_usec_t block_usec;
128 pa_idxset* outputs; /* managed in main context */
131 PA_LLIST_HEAD(struct output, active_outputs); /* managed in IO thread context */
132 pa_atomic_t running; /* we cache that value here, so that every thread can query it cheaply */
134 pa_bool_t in_null_mode;
135 pa_smoother *smoother;
141 SINK_MESSAGE_ADD_OUTPUT = PA_SINK_MESSAGE_MAX,
142 SINK_MESSAGE_REMOVE_OUTPUT,
144 SINK_MESSAGE_UPDATE_LATENCY,
145 SINK_MESSAGE_UPDATE_MAX_REQUEST
149 SINK_INPUT_MESSAGE_POST = PA_SINK_INPUT_MESSAGE_MAX,
152 static void output_free(struct output *o);
153 static int output_create_sink_input(struct output *o);
155 static void adjust_rates(struct userdata *u) {
157 pa_usec_t max_sink_latency = 0, min_total_latency = (pa_usec_t) -1, target_latency, avg_total_latency = 0;
163 pa_sink_assert_ref(u->sink);
165 if (pa_idxset_size(u->outputs) <= 0)
168 if (!PA_SINK_IS_OPENED(pa_sink_get_state(u->sink)))
171 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx)) {
172 pa_usec_t sink_latency;
174 if (!o->sink_input || !PA_SINK_IS_OPENED(pa_sink_get_state(o->sink)))
177 o->total_latency = pa_sink_input_get_latency(o->sink_input, &sink_latency);
178 o->total_latency += sink_latency;
180 if (sink_latency > max_sink_latency)
181 max_sink_latency = sink_latency;
183 if (min_total_latency == (pa_usec_t) -1 || o->total_latency < min_total_latency)
184 min_total_latency = o->total_latency;
186 avg_total_latency += o->total_latency;
190 if (min_total_latency == (pa_usec_t) -1)
193 avg_total_latency /= n;
195 target_latency = max_sink_latency > min_total_latency ? max_sink_latency : min_total_latency;
197 pa_log_info("[%s] avg total latency is %0.2f msec.", u->sink->name, (double) avg_total_latency / PA_USEC_PER_MSEC);
198 pa_log_info("[%s] target latency is %0.2f msec.", u->sink->name, (double) target_latency / PA_USEC_PER_MSEC);
200 base_rate = u->sink->sample_spec.rate;
202 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx)) {
203 uint32_t r = base_rate;
205 if (!o->sink_input || !PA_SINK_IS_OPENED(pa_sink_get_state(o->sink)))
208 if (o->total_latency < target_latency)
209 r -= (uint32_t) (((((double) target_latency - o->total_latency))/u->adjust_time)*r/PA_USEC_PER_SEC);
210 else if (o->total_latency > target_latency)
211 r += (uint32_t) (((((double) o->total_latency - target_latency))/u->adjust_time)*r/PA_USEC_PER_SEC);
213 if (r < (uint32_t) (base_rate*0.9) || r > (uint32_t) (base_rate*1.1)) {
214 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);
215 pa_sink_input_set_rate(o->sink_input, base_rate);
217 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);
218 pa_sink_input_set_rate(o->sink_input, r);
222 pa_asyncmsgq_send(u->sink->asyncmsgq, PA_MSGOBJECT(u->sink), SINK_MESSAGE_UPDATE_LATENCY, NULL, (int64_t) avg_total_latency, NULL);
225 static void time_callback(pa_mainloop_api*a, pa_time_event* e, const struct timeval *tv, void *userdata) {
226 struct userdata *u = userdata;
231 pa_assert(u->time_event == e);
236 n.tv_sec += u->adjust_time;
237 u->sink->core->mainloop->time_restart(e, &n);
240 static void process_render_null(struct userdata *u, pa_usec_t now) {
244 if (u->thread_info.in_null_mode)
245 u->thread_info.timestamp = now;
247 while (u->thread_info.timestamp < now + u->block_usec) {
250 pa_sink_render(u->sink, u->sink->thread_info.max_request, &chunk);
251 pa_memblock_unref(chunk.memblock);
253 u->thread_info.counter += chunk.length;
255 /* pa_log_debug("Ate %lu bytes.", (unsigned long) chunk.length); */
256 u->thread_info.timestamp += pa_bytes_to_usec(chunk.length, &u->sink->sample_spec);
260 if (ate >= u->sink->thread_info.max_request)
264 /* pa_log_debug("Ate in sum %lu bytes (of %lu)", (unsigned long) ate, (unsigned long) nbytes); */
266 pa_smoother_put(u->thread_info.smoother, now,
267 pa_bytes_to_usec(u->thread_info.counter, &u->sink->sample_spec) - (u->thread_info.timestamp - now));
270 static void thread_func(void *userdata) {
271 struct userdata *u = userdata;
275 pa_log_debug("Thread starting up");
277 if (u->core->realtime_scheduling)
278 pa_make_realtime(u->core->realtime_priority+1);
280 pa_thread_mq_install(&u->thread_mq);
281 pa_rtpoll_install(u->rtpoll);
283 u->thread_info.timestamp = pa_rtclock_usec();
284 u->thread_info.in_null_mode = FALSE;
289 /* If no outputs are connected, render some data and drop it immediately. */
290 if (PA_SINK_IS_OPENED(u->sink->thread_info.state) && !u->thread_info.active_outputs) {
293 now = pa_rtclock_usec();
295 if (!u->thread_info.in_null_mode || u->thread_info.timestamp <= now)
296 process_render_null(u, now);
298 pa_rtpoll_set_timer_absolute(u->rtpoll, u->thread_info.timestamp);
299 u->thread_info.in_null_mode = TRUE;
301 pa_rtpoll_set_timer_disabled(u->rtpoll);
302 u->thread_info.in_null_mode = FALSE;
305 /* Hmm, nothing to do. Let's sleep */
306 if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0) {
307 pa_log_info("pa_rtpoll_run() = %i", ret);
316 /* If this was no regular exit from the loop we have to continue
317 * processing messages until we received PA_MESSAGE_SHUTDOWN */
318 pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
319 pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
322 pa_log_debug("Thread shutting down");
325 /* Called from I/O thread context */
326 static void render_memblock(struct userdata *u, struct output *o, size_t length) {
330 /* We are run by the sink thread, on behalf of an output (o). The
331 * output is waiting for us, hence it is safe to access its
332 * mainblockq and asyncmsgq directly. */
334 /* If we are not running, we cannot produce any data */
335 if (!pa_atomic_load(&u->thread_info.running))
338 /* Maybe there's some data in the requesting output's queue
340 while (pa_asyncmsgq_process_one(o->inq) > 0)
343 /* Ok, now let's prepare some data if we really have to */
344 while (!pa_memblockq_is_readable(o->memblockq)) {
349 pa_sink_render(u->sink, length, &chunk);
351 u->thread_info.counter += chunk.length;
353 /* OK, let's send this data to the other threads */
354 for (j = u->thread_info.active_outputs; j; j = j->next)
356 /* Send to other outputs, which are not the requesting
360 pa_asyncmsgq_post(j->inq, PA_MSGOBJECT(j->sink_input), SINK_INPUT_MESSAGE_POST, NULL, 0, &chunk, NULL);
362 /* And place it directly into the requesting output's queue */
364 pa_memblockq_push_align(o->memblockq, &chunk);
366 pa_memblock_unref(chunk.memblock);
370 /* Called from I/O thread context */
371 static void request_memblock(struct output *o, size_t length) {
373 pa_sink_input_assert_ref(o->sink_input);
374 pa_sink_assert_ref(o->userdata->sink);
376 /* If another thread already prepared some data we received
377 * the data over the asyncmsgq, hence let's first process
379 while (pa_asyncmsgq_process_one(o->inq) > 0)
382 /* Check whether we're now readable */
383 if (pa_memblockq_is_readable(o->memblockq))
386 /* OK, we need to prepare new data, but only if the sink is actually running */
387 if (pa_atomic_load(&o->userdata->thread_info.running))
388 pa_asyncmsgq_send(o->outq, PA_MSGOBJECT(o->userdata->sink), SINK_MESSAGE_NEED, o, length, NULL);
391 /* Called from I/O thread context */
392 static int sink_input_pop_cb(pa_sink_input *i, size_t nbytes, pa_memchunk *chunk) {
395 pa_sink_input_assert_ref(i);
396 pa_assert_se(o = i->userdata);
398 /* If necessary, get some new data */
399 request_memblock(o, nbytes);
401 if (pa_memblockq_peek(o->memblockq, chunk) < 0)
404 pa_memblockq_drop(o->memblockq, chunk->length);
408 /* Called from I/O thread context */
409 static void sink_input_process_rewind_cb(pa_sink_input *i, size_t nbytes) {
412 pa_sink_input_assert_ref(i);
413 pa_assert_se(o = i->userdata);
415 pa_memblockq_rewind(o->memblockq, nbytes);
418 /* Called from I/O thread context */
419 static void sink_input_update_max_rewind_cb(pa_sink_input *i, size_t nbytes) {
422 pa_sink_input_assert_ref(i);
423 pa_assert_se(o = i->userdata);
425 pa_memblockq_set_maxrewind(o->memblockq, nbytes);
428 /* Called from I/O thread context */
429 static void sink_input_update_max_request_cb(pa_sink_input *i, size_t nbytes) {
432 pa_sink_input_assert_ref(i);
433 pa_assert_se(o = i->userdata);
435 if (pa_atomic_load(&o->max_request) == (int) nbytes)
438 pa_atomic_store(&o->max_request, (int) nbytes);
440 pa_asyncmsgq_post(o->outq, PA_MSGOBJECT(o->userdata->sink), SINK_MESSAGE_UPDATE_MAX_REQUEST, NULL, 0, NULL, NULL);
443 /* Called from I/O thread context */
444 static void sink_input_attach_cb(pa_sink_input *i) {
447 pa_sink_input_assert_ref(i);
448 pa_assert_se(o = i->userdata);
450 /* Set up the queue from the sink thread to us */
451 pa_assert(!o->inq_rtpoll_item_read && !o->outq_rtpoll_item_write);
453 o->inq_rtpoll_item_read = pa_rtpoll_item_new_asyncmsgq_read(
455 PA_RTPOLL_LATE, /* This one is not that important, since we check for data in _peek() anyway. */
458 o->outq_rtpoll_item_write = pa_rtpoll_item_new_asyncmsgq_write(
464 /* Called from I/O thread context */
465 static void sink_input_detach_cb(pa_sink_input *i) {
468 pa_sink_input_assert_ref(i);
469 pa_assert_se(o = i->userdata);
471 /* Shut down the queue from the sink thread to us */
472 pa_assert(o->inq_rtpoll_item_read && o->outq_rtpoll_item_write);
474 pa_rtpoll_item_free(o->inq_rtpoll_item_read);
475 o->inq_rtpoll_item_read = NULL;
477 pa_rtpoll_item_free(o->outq_rtpoll_item_write);
478 o->outq_rtpoll_item_write = NULL;
481 /* Called from main context */
482 static void sink_input_kill_cb(pa_sink_input *i) {
485 pa_sink_input_assert_ref(i);
486 pa_assert(o = i->userdata);
488 pa_module_unload_request(o->userdata->module);
492 /* Called from IO thread context */
493 static void sink_input_state_change_cb(pa_sink_input *i, pa_sink_input_state_t state) {
496 pa_sink_input_assert_ref(i);
497 pa_assert_se(u = i->userdata);
499 /* If we are added for the first time, ask for a rewinding so that
500 * we are heard right-away. */
501 if (PA_SINK_INPUT_IS_LINKED(state) &&
502 i->thread_info.state == PA_SINK_INPUT_INIT)
503 pa_sink_input_request_rewind(i, 0, FALSE, TRUE);
506 /* Called from thread context */
507 static int sink_input_process_msg(pa_msgobject *obj, int code, void *data, int64_t offset, pa_memchunk *chunk) {
508 struct output *o = PA_SINK_INPUT(obj)->userdata;
512 case PA_SINK_INPUT_MESSAGE_GET_LATENCY: {
515 *r = pa_bytes_to_usec(pa_memblockq_get_length(o->memblockq), &o->sink_input->sample_spec);
517 /* Fall through, the default handler will add in the extra
518 * latency added by the resampler */
522 case SINK_INPUT_MESSAGE_POST:
524 if (PA_SINK_IS_OPENED(o->sink_input->sink->thread_info.state))
525 pa_memblockq_push_align(o->memblockq, chunk);
527 pa_memblockq_flush_write(o->memblockq);
532 return pa_sink_input_process_msg(obj, code, data, offset, chunk);
535 /* Called from main context */
536 static void disable_output(struct output *o) {
542 pa_sink_input_unlink(o->sink_input);
543 pa_asyncmsgq_send(o->userdata->sink->asyncmsgq, PA_MSGOBJECT(o->userdata->sink), SINK_MESSAGE_REMOVE_OUTPUT, o, 0, NULL);
544 pa_sink_input_unref(o->sink_input);
545 o->sink_input = NULL;
548 /* Called from main context */
549 static void enable_output(struct output *o) {
555 if (output_create_sink_input(o) >= 0) {
557 pa_memblockq_flush_write(o->memblockq);
559 pa_sink_input_put(o->sink_input);
561 if (o->userdata->sink && PA_SINK_IS_LINKED(pa_sink_get_state(o->userdata->sink)))
562 pa_asyncmsgq_send(o->userdata->sink->asyncmsgq, PA_MSGOBJECT(o->userdata->sink), SINK_MESSAGE_ADD_OUTPUT, o, 0, NULL);
566 /* Called from main context */
567 static void suspend(struct userdata *u) {
573 /* Let's suspend by unlinking all streams */
574 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx))
577 pa_log_info("Device suspended...");
580 /* Called from main context */
581 static void unsuspend(struct userdata *u) {
588 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx)) {
590 pa_sink_suspend(o->sink, FALSE);
592 if (PA_SINK_IS_OPENED(pa_sink_get_state(o->sink)))
596 pa_log_info("Resumed successfully...");
599 /* Called from main context */
600 static int sink_set_state(pa_sink *sink, pa_sink_state_t state) {
603 pa_sink_assert_ref(sink);
604 pa_assert_se(u = sink->userdata);
606 /* Please note that in contrast to the ALSA modules we call
607 * suspend/unsuspend from main context here! */
610 case PA_SINK_SUSPENDED:
611 pa_assert(PA_SINK_IS_OPENED(pa_sink_get_state(u->sink)));
617 case PA_SINK_RUNNING:
619 if (pa_sink_get_state(u->sink) == PA_SINK_SUSPENDED)
624 case PA_SINK_UNLINKED:
632 /* Called from IO context */
633 static void update_max_request(struct userdata *u) {
634 size_t max_request = 0;
637 for (o = u->thread_info.active_outputs; o; o = o->next) {
638 size_t mr = (size_t) pa_atomic_load(&o->max_request);
640 if (mr > max_request)
644 if (max_request <= 0)
645 max_request = pa_usec_to_bytes(u->block_usec, &u->sink->sample_spec);
647 pa_sink_set_max_request(u->sink, max_request);
650 /* Called from thread context of the io thread */
651 static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
652 struct userdata *u = PA_SINK(o)->userdata;
656 case PA_SINK_MESSAGE_SET_STATE:
657 pa_atomic_store(&u->thread_info.running, PA_PTR_TO_UINT(data) == PA_SINK_RUNNING);
659 if (PA_PTR_TO_UINT(data) == PA_SINK_SUSPENDED)
660 pa_smoother_pause(u->thread_info.smoother, pa_rtclock_usec());
662 pa_smoother_resume(u->thread_info.smoother, pa_rtclock_usec());
666 case PA_SINK_MESSAGE_GET_LATENCY: {
667 pa_usec_t x, y, c, *delay = data;
669 x = pa_rtclock_usec();
670 y = pa_smoother_get(u->thread_info.smoother, x);
672 c = pa_bytes_to_usec(u->thread_info.counter, &u->sink->sample_spec);
682 case SINK_MESSAGE_ADD_OUTPUT: {
683 struct output *op = data;
685 PA_LLIST_PREPEND(struct output, u->thread_info.active_outputs, op);
687 pa_assert(!op->outq_rtpoll_item_read && !op->inq_rtpoll_item_write);
689 op->outq_rtpoll_item_read = pa_rtpoll_item_new_asyncmsgq_read(
691 PA_RTPOLL_EARLY-1, /* This item is very important */
693 op->inq_rtpoll_item_write = pa_rtpoll_item_new_asyncmsgq_write(
698 update_max_request(u);
702 case SINK_MESSAGE_REMOVE_OUTPUT: {
703 struct output *op = data;
705 PA_LLIST_REMOVE(struct output, u->thread_info.active_outputs, op);
707 pa_assert(op->outq_rtpoll_item_read && op->inq_rtpoll_item_write);
709 pa_rtpoll_item_free(op->outq_rtpoll_item_read);
710 op->outq_rtpoll_item_read = NULL;
712 pa_rtpoll_item_free(op->inq_rtpoll_item_write);
713 op->inq_rtpoll_item_write = NULL;
715 update_max_request(u);
719 case SINK_MESSAGE_NEED:
720 render_memblock(u, (struct output*) data, (size_t) offset);
723 case SINK_MESSAGE_UPDATE_LATENCY: {
724 pa_usec_t x, y, latency = (pa_usec_t) offset;
726 x = pa_rtclock_usec();
727 y = pa_bytes_to_usec(u->thread_info.counter, &u->sink->sample_spec);
734 pa_smoother_put(u->thread_info.smoother, x, y);
738 case SINK_MESSAGE_UPDATE_MAX_REQUEST:
740 update_max_request(u);
744 return pa_sink_process_msg(o, code, data, offset, chunk);
747 static void update_description(struct userdata *u) {
748 pa_bool_t first = TRUE;
755 if (pa_idxset_isempty(u->outputs)) {
756 pa_sink_set_description(u->sink, "Simultaneous output");
760 t = pa_xstrdup("Simultaneous output to");
762 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx)) {
766 e = pa_sprintf_malloc("%s %s", t, pa_strnull(pa_proplist_gets(o->sink->proplist, PA_PROP_DEVICE_DESCRIPTION)));
769 e = pa_sprintf_malloc("%s, %s", t, pa_strnull(pa_proplist_gets(o->sink->proplist, PA_PROP_DEVICE_DESCRIPTION)));
775 pa_sink_set_description(u->sink, t);
779 static int output_create_sink_input(struct output *o) {
780 pa_sink_input_new_data data;
787 pa_sink_input_new_data_init(&data);
789 data.driver = __FILE__;
790 pa_proplist_setf(data.proplist, PA_PROP_MEDIA_NAME, "Simultaneous output on %s", pa_strnull(pa_proplist_gets(o->sink->proplist, PA_PROP_DEVICE_DESCRIPTION)));
791 pa_proplist_sets(data.proplist, PA_PROP_MEDIA_ROLE, "filter");
792 pa_sink_input_new_data_set_sample_spec(&data, &o->userdata->sink->sample_spec);
793 pa_sink_input_new_data_set_channel_map(&data, &o->userdata->sink->channel_map);
794 data.module = o->userdata->module;
795 data.resample_method = o->userdata->resample_method;
797 o->sink_input = pa_sink_input_new(o->userdata->core, &data, PA_SINK_INPUT_VARIABLE_RATE|PA_SINK_INPUT_DONT_MOVE);
799 pa_sink_input_new_data_done(&data);
804 o->sink_input->parent.process_msg = sink_input_process_msg;
805 o->sink_input->pop = sink_input_pop_cb;
806 o->sink_input->process_rewind = sink_input_process_rewind_cb;
807 o->sink_input->state_change = sink_input_state_change_cb;
808 o->sink_input->update_max_rewind = sink_input_update_max_rewind_cb;
809 o->sink_input->update_max_request = sink_input_update_max_request_cb;
810 o->sink_input->attach = sink_input_attach_cb;
811 o->sink_input->detach = sink_input_detach_cb;
812 o->sink_input->kill = sink_input_kill_cb;
813 o->sink_input->userdata = o;
815 pa_sink_input_set_requested_latency(o->sink_input, REQUEST_LATENCY_USEC);
820 static struct output *output_new(struct userdata *u, pa_sink *sink) {
822 pa_sink_state_t state;
828 o = pa_xnew(struct output, 1);
830 o->inq = pa_asyncmsgq_new(0);
831 o->outq = pa_asyncmsgq_new(0);
832 o->inq_rtpoll_item_write = o->inq_rtpoll_item_read = NULL;
833 o->outq_rtpoll_item_write = o->outq_rtpoll_item_read = NULL;
835 o->sink_input = NULL;
836 o->memblockq = pa_memblockq_new(
840 pa_frame_size(&u->sink->sample_spec),
845 pa_atomic_store(&o->max_request, 0);
846 PA_LLIST_INIT(struct output, o);
848 pa_assert_se(pa_idxset_put(u->outputs, o, NULL) == 0);
850 state = pa_sink_get_state(u->sink);
852 if (state != PA_SINK_INIT)
853 pa_asyncmsgq_send(u->sink->asyncmsgq, PA_MSGOBJECT(u->sink), SINK_MESSAGE_ADD_OUTPUT, o, 0, NULL);
855 /* If the sink is not yet started, we need to do the activation ourselves */
856 PA_LLIST_PREPEND(struct output, u->thread_info.active_outputs, o);
858 o->outq_rtpoll_item_read = pa_rtpoll_item_new_asyncmsgq_read(
860 PA_RTPOLL_EARLY-1, /* This item is very important */
862 o->inq_rtpoll_item_write = pa_rtpoll_item_new_asyncmsgq_write(
868 if (PA_SINK_IS_OPENED(state) || state == PA_SINK_INIT) {
869 pa_sink_suspend(sink, FALSE);
871 if (PA_SINK_IS_OPENED(pa_sink_get_state(sink)))
872 if (output_create_sink_input(o) < 0)
876 update_description(u);
883 pa_idxset_remove_by_data(u->outputs, o, NULL);
886 pa_sink_input_unlink(o->sink_input);
887 pa_sink_input_unref(o->sink_input);
891 pa_memblockq_free(o->memblockq);
894 pa_asyncmsgq_unref(o->inq);
897 pa_asyncmsgq_unref(o->outq);
905 static pa_bool_t is_suitable_sink(struct userdata *u, pa_sink *s) {
908 pa_sink_assert_ref(s);
910 if (!(s->flags & PA_SINK_HARDWARE))
916 if ((t = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_CLASS)))
917 if (strcmp(t, "sound"))
923 static pa_hook_result_t sink_put_hook_cb(pa_core *c, pa_sink *s, struct userdata* u) {
926 pa_core_assert_ref(c);
927 pa_sink_assert_ref(s);
929 pa_assert(u->automatic);
931 if (!is_suitable_sink(u, s))
934 pa_log_info("Configuring new sink: %s", s->name);
936 if (!(o = output_new(u, s))) {
937 pa_log("Failed to create sink input on sink '%s'.", s->name);
942 pa_sink_input_put(o->sink_input);
947 static struct output* find_output(struct userdata *u, pa_sink *s) {
957 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx))
964 static pa_hook_result_t sink_unlink_hook_cb(pa_core *c, pa_sink *s, struct userdata* u) {
968 pa_sink_assert_ref(s);
971 if (!(o = find_output(u, s)))
974 pa_log_info("Unconfiguring sink: %s", s->name);
981 static pa_hook_result_t sink_state_changed_hook_cb(pa_core *c, pa_sink *s, struct userdata* u) {
983 pa_sink_state_t state;
985 if (!(o = find_output(u, s)))
988 state = pa_sink_get_state(s);
990 if (PA_SINK_IS_OPENED(state) && PA_SINK_IS_OPENED(pa_sink_get_state(u->sink)) && !o->sink_input)
993 if (state == PA_SINK_SUSPENDED && o->sink_input)
999 int pa__init(pa_module*m) {
1001 pa_modargs *ma = NULL;
1002 const char *slaves, *rm;
1003 int resample_method = PA_RESAMPLER_TRIVIAL;
1008 pa_sink_new_data data;
1012 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
1013 pa_log("failed to parse module arguments");
1017 if ((rm = pa_modargs_get_value(ma, "resample_method", NULL))) {
1018 if ((resample_method = pa_parse_resample_method(rm)) < 0) {
1019 pa_log("invalid resample method '%s'", rm);
1024 m->userdata = u = pa_xnew(struct userdata, 1);
1028 u->time_event = NULL;
1029 u->adjust_time = DEFAULT_ADJUST_TIME;
1030 u->rtpoll = pa_rtpoll_new();
1031 pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll);
1033 u->resample_method = resample_method;
1034 u->outputs = pa_idxset_new(NULL, NULL);
1035 memset(&u->adjust_timestamp, 0, sizeof(u->adjust_timestamp));
1036 u->sink_put_slot = u->sink_unlink_slot = u->sink_state_changed_slot = NULL;
1037 PA_LLIST_HEAD_INIT(struct output, u->thread_info.active_outputs);
1038 pa_atomic_store(&u->thread_info.running, FALSE);
1039 u->thread_info.in_null_mode = FALSE;
1040 u->thread_info.counter = 0;
1041 u->thread_info.smoother = pa_smoother_new(PA_USEC_PER_SEC, PA_USEC_PER_SEC*2, TRUE, 10);
1043 if (pa_modargs_get_value_u32(ma, "adjust_time", &u->adjust_time) < 0) {
1044 pa_log("Failed to parse adjust_time value");
1048 slaves = pa_modargs_get_value(ma, "slaves", NULL);
1049 u->automatic = !slaves;
1050 ss = m->core->default_sample_spec;
1052 if ((pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_DEFAULT) < 0)) {
1053 pa_log("Invalid sample specification.");
1057 pa_sink_new_data_init(&data);
1058 data.namereg_fail = FALSE;
1059 data.driver = __FILE__;
1061 pa_sink_new_data_set_name(&data, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME));
1062 pa_sink_new_data_set_sample_spec(&data, &ss);
1063 pa_sink_new_data_set_channel_map(&data, &map);
1064 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_DESCRIPTION, "Simultaneous Output");
1065 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_CLASS, "filter");
1068 pa_proplist_sets(data.proplist, "combine.slaves", slaves);
1070 u->sink = pa_sink_new(m->core, &data, PA_SINK_LATENCY);
1071 pa_sink_new_data_done(&data);
1074 pa_log("Failed to create sink");
1078 u->sink->parent.process_msg = sink_process_msg;
1079 u->sink->set_state = sink_set_state;
1080 u->sink->userdata = u;
1082 pa_sink_set_rtpoll(u->sink, u->rtpoll);
1083 pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
1085 pa_sink_set_latency_range(u->sink, REQUEST_LATENCY_USEC, REQUEST_LATENCY_USEC);
1086 u->block_usec = u->sink->thread_info.max_latency;
1088 u->sink->thread_info.max_request =
1089 pa_usec_to_bytes(u->block_usec, &u->sink->sample_spec);
1091 if (!u->automatic) {
1092 const char*split_state;
1096 /* The slaves have been specified manually */
1099 while ((n = pa_split(slaves, ",", &split_state))) {
1100 pa_sink *slave_sink;
1102 if (!(slave_sink = pa_namereg_get(m->core, n, PA_NAMEREG_SINK, TRUE)) || slave_sink == u->sink) {
1103 pa_log("Invalid slave sink '%s'", n);
1110 if (!output_new(u, slave_sink)) {
1111 pa_log("Failed to create slave sink input on sink '%s'.", slave_sink->name);
1116 if (pa_idxset_size(u->outputs) <= 1)
1117 pa_log_warn("No slave sinks specified.");
1119 u->sink_put_slot = NULL;
1124 /* We're in automatic mode, we add every sink that matches our needs */
1126 for (s = pa_idxset_first(m->core->sinks, &idx); s; s = pa_idxset_next(m->core->sinks, &idx)) {
1128 if (!is_suitable_sink(u, s))
1131 if (!output_new(u, s)) {
1132 pa_log("Failed to create sink input on sink '%s'.", s->name);
1137 u->sink_put_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_PUT], PA_HOOK_LATE, (pa_hook_cb_t) sink_put_hook_cb, u);
1140 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);
1141 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);
1143 if (!(u->thread = pa_thread_new(thread_func, u))) {
1144 pa_log("Failed to create thread.");
1148 /* Activate the sink and the sink inputs */
1149 pa_sink_put(u->sink);
1151 for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx))
1153 pa_sink_input_put(o->sink_input);
1155 if (u->adjust_time > 0) {
1157 pa_gettimeofday(&tv);
1158 tv.tv_sec += u->adjust_time;
1159 u->time_event = m->core->mainloop->time_new(m->core->mainloop, &tv, time_callback, u);
1162 pa_modargs_free(ma);
1169 pa_modargs_free(ma);
1176 static void output_free(struct output *o) {
1181 pa_assert_se(pa_idxset_remove_by_data(o->userdata->outputs, o, NULL));
1183 update_description(o->userdata);
1185 if (o->inq_rtpoll_item_read)
1186 pa_rtpoll_item_free(o->inq_rtpoll_item_read);
1187 if (o->inq_rtpoll_item_write)
1188 pa_rtpoll_item_free(o->inq_rtpoll_item_write);
1190 if (o->outq_rtpoll_item_read)
1191 pa_rtpoll_item_free(o->outq_rtpoll_item_read);
1192 if (o->outq_rtpoll_item_write)
1193 pa_rtpoll_item_free(o->outq_rtpoll_item_write);
1196 pa_asyncmsgq_unref(o->inq);
1199 pa_asyncmsgq_unref(o->outq);
1202 pa_memblockq_free(o->memblockq);
1207 void pa__done(pa_module*m) {
1213 if (!(u = m->userdata))
1216 if (u->sink_put_slot)
1217 pa_hook_slot_free(u->sink_put_slot);
1219 if (u->sink_unlink_slot)
1220 pa_hook_slot_free(u->sink_unlink_slot);
1222 if (u->sink_state_changed_slot)
1223 pa_hook_slot_free(u->sink_state_changed_slot);
1226 while ((o = pa_idxset_first(u->outputs, NULL)))
1229 pa_idxset_free(u->outputs, NULL, NULL);
1233 pa_sink_unlink(u->sink);
1236 pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
1237 pa_thread_free(u->thread);
1240 pa_thread_mq_done(&u->thread_mq);
1243 pa_sink_unref(u->sink);
1246 pa_rtpoll_free(u->rtpoll);
1249 u->core->mainloop->time_free(u->time_event);
1251 if (u->thread_info.smoother)
1252 pa_smoother_free(u->thread_info.smoother);