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*170)
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).", o
->sink_input
->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.", o
->sink_input
->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 pa_rtclock_get(&now
);
255 if (!u
->thread_info
.in_null_mode
|| pa_timeval_cmp(&u
->thread_info
.timestamp
, &now
) <= 0) {
256 pa_sink_skip(u
->sink
, u
->block_size
);
258 if (!u
->thread_info
.in_null_mode
)
259 u
->thread_info
.timestamp
= now
;
261 pa_timeval_add(&u
->thread_info
.timestamp
, pa_bytes_to_usec(u
->block_size
, &u
->sink
->sample_spec
));
264 pa_rtpoll_set_timer_absolute(u
->rtpoll
, &u
->thread_info
.timestamp
);
265 u
->thread_info
.in_null_mode
= TRUE
;
268 pa_rtpoll_set_timer_disabled(u
->rtpoll
);
269 u
->thread_info
.in_null_mode
= FALSE
;
272 /* Hmm, nothing to do. Let's sleep */
273 if ((ret
= pa_rtpoll_run(u
->rtpoll
, TRUE
)) < 0) {
274 pa_log_info("pa_rtpoll_run() = %i", ret
);
283 /* If this was no regular exit from the loop we have to continue
284 * processing messages until we received PA_MESSAGE_SHUTDOWN */
285 pa_asyncmsgq_post(u
->thread_mq
.outq
, PA_MSGOBJECT(u
->core
), PA_CORE_MESSAGE_UNLOAD_MODULE
, u
->module
, 0, NULL
, NULL
);
286 pa_asyncmsgq_wait_for(u
->thread_mq
.inq
, PA_MESSAGE_SHUTDOWN
);
289 pa_log_debug("Thread shutting down");
292 /* Called from I/O thread context */
293 static void render_memblock(struct userdata
*u
, struct output
*o
, size_t length
) {
297 /* We are run by the sink thread, on behalf of an output (o). The
298 * other output is waiting for us, hence it is safe to access its
299 * mainblockq and asyncmsgq directly. */
301 /* If we are not running, we cannot produce any data */
302 if (!pa_atomic_load(&u
->thread_info
.running
))
305 /* Maybe there's some data in the requesting output's queue
307 while (pa_asyncmsgq_process_one(o
->inq
) > 0)
310 /* Ok, now let's prepare some data if we really have to */
311 while (!pa_memblockq_is_readable(o
->memblockq
)) {
316 pa_sink_render(u
->sink
, length
, &chunk
);
318 /* OK, let's send this data to the other threads */
319 for (j
= u
->thread_info
.active_outputs
; j
; j
= j
->next
)
321 /* Send to other outputs, which are not the requesting
325 pa_asyncmsgq_post(j
->inq
, PA_MSGOBJECT(j
->sink_input
), SINK_INPUT_MESSAGE_POST
, NULL
, 0, &chunk
, NULL
);
327 /* And place it directly into the requesting output's queue */
329 pa_memblockq_push_align(o
->memblockq
, &chunk
);
331 pa_memblock_unref(chunk
.memblock
);
335 /* Called from I/O thread context */
336 static void request_memblock(struct output
*o
, size_t length
) {
338 pa_sink_input_assert_ref(o
->sink_input
);
339 pa_sink_assert_ref(o
->userdata
->sink
);
341 /* If another thread already prepared some data we received
342 * the data over the asyncmsgq, hence let's first process
344 while (pa_asyncmsgq_process_one(o
->inq
) > 0)
347 /* Check whether we're now readable */
348 if (pa_memblockq_is_readable(o
->memblockq
))
351 /* OK, we need to prepare new data, but only if the sink is actually running */
352 if (pa_atomic_load(&o
->userdata
->thread_info
.running
))
353 pa_asyncmsgq_send(o
->outq
, PA_MSGOBJECT(o
->userdata
->sink
), SINK_MESSAGE_NEED
, o
, length
, NULL
);
356 /* Called from I/O thread context */
357 static int sink_input_peek_cb(pa_sink_input
*i
, size_t length
, pa_memchunk
*chunk
) {
360 pa_sink_input_assert_ref(i
);
361 pa_assert_se(o
= i
->userdata
);
363 /* If necessary, get some new data */
364 request_memblock(o
, length
);
366 return pa_memblockq_peek(o
->memblockq
, chunk
);
369 /* Called from I/O thread context */
370 static void sink_input_drop_cb(pa_sink_input
*i
, size_t length
) {
373 pa_sink_input_assert_ref(i
);
374 pa_assert(length
> 0);
375 pa_assert_se(o
= i
->userdata
);
377 pa_memblockq_drop(o
->memblockq
, length
);
380 /* Called from I/O thread context */
381 static void sink_input_attach_cb(pa_sink_input
*i
) {
384 pa_sink_input_assert_ref(i
);
385 pa_assert_se(o
= i
->userdata
);
387 /* Set up the queue from the sink thread to us */
388 pa_assert(!o
->inq_rtpoll_item
);
389 o
->inq_rtpoll_item
= pa_rtpoll_item_new_asyncmsgq(
391 PA_RTPOLL_LATE
, /* This one is not that important, since we check for data in _peek() anyway. */
395 /* Called from I/O thread context */
396 static void sink_input_detach_cb(pa_sink_input
*i
) {
399 pa_sink_input_assert_ref(i
);
400 pa_assert_se(o
= i
->userdata
);
402 /* Shut down the queue from the sink thread to us */
403 pa_assert(o
->inq_rtpoll_item
);
404 pa_rtpoll_item_free(o
->inq_rtpoll_item
);
405 o
->inq_rtpoll_item
= NULL
;
408 /* Called from main context */
409 static void sink_input_kill_cb(pa_sink_input
*i
) {
412 pa_sink_input_assert_ref(i
);
413 pa_assert(o
= i
->userdata
);
415 pa_module_unload_request(o
->userdata
->module
);
419 /* Called from thread context */
420 static int sink_input_process_msg(pa_msgobject
*obj
, int code
, void *data
, int64_t offset
, pa_memchunk
*chunk
) {
421 struct output
*o
= PA_SINK_INPUT(obj
)->userdata
;
425 case PA_SINK_INPUT_MESSAGE_GET_LATENCY
: {
428 *r
= pa_bytes_to_usec(pa_memblockq_get_length(o
->memblockq
), &o
->sink_input
->sample_spec
);
430 /* Fall through, the default handler will add in the extra
431 * latency added by the resampler */
435 case SINK_INPUT_MESSAGE_POST
:
437 if (PA_SINK_OPENED(o
->sink_input
->sink
->thread_info
.state
))
438 pa_memblockq_push_align(o
->memblockq
, chunk
);
440 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_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_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_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(
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
) {
622 pa_sink_assert_ref(s
);
623 pa_assert_se(u
= s
->userdata
);
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
);
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
, o
->sink
->description
);
671 e
= pa_sprintf_malloc("%s, %s", t
, o
->sink
->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_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_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", o
->sink
->description
);
728 pa_sink_input_new_data_init(&data
);
730 data
.driver
= __FILE__
;
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
);
744 o
->sink_input
->parent
.process_msg
= sink_input_process_msg
;
745 o
->sink_input
->peek
= sink_input_peek_cb
;
746 o
->sink_input
->drop
= sink_input_drop_cb
;
747 o
->sink_input
->attach
= sink_input_attach_cb
;
748 o
->sink_input
->detach
= sink_input_detach_cb
;
749 o
->sink_input
->kill
= sink_input_kill_cb
;
750 o
->sink_input
->userdata
= o
;
756 static struct output
*output_new(struct userdata
*u
, pa_sink
*sink
) {
763 o
= pa_xnew(struct output
, 1);
765 o
->inq
= pa_asyncmsgq_new(0);
766 o
->outq
= pa_asyncmsgq_new(0);
767 o
->inq_rtpoll_item
= NULL
;
768 o
->outq_rtpoll_item
= NULL
;
770 o
->sink_input
= NULL
;
771 o
->memblockq
= pa_memblockq_new(
775 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
;
926 if (!(ma
= pa_modargs_new(m
->argument
, valid_modargs
))) {
927 pa_log("failed to parse module arguments");
931 if ((rm
= pa_modargs_get_value(ma
, "resample_method", NULL
))) {
932 if ((resample_method
= pa_parse_resample_method(rm
)) < 0) {
933 pa_log("invalid resample method '%s'", rm
);
938 u
= pa_xnew(struct userdata
, 1);
944 u
->time_event
= NULL
;
945 u
->adjust_time
= DEFAULT_ADJUST_TIME
;
946 pa_thread_mq_init(&u
->thread_mq
, m
->core
->mainloop
);
947 u
->rtpoll
= pa_rtpoll_new();
949 u
->resample_method
= resample_method
;
950 u
->outputs
= pa_idxset_new(NULL
, NULL
);
951 memset(&u
->adjust_timestamp
, 0, sizeof(u
->adjust_timestamp
));
952 u
->sink_new_slot
= u
->sink_unlink_slot
= u
->sink_state_changed_slot
= NULL
;
953 PA_LLIST_HEAD_INIT(struct output
, u
->thread_info
.active_outputs
);
954 pa_atomic_store(&u
->thread_info
.running
, FALSE
);
955 u
->thread_info
.in_null_mode
= FALSE
;
956 pa_rtpoll_item_new_asyncmsgq(u
->rtpoll
, PA_RTPOLL_EARLY
, u
->thread_mq
.inq
);
958 if (pa_modargs_get_value_u32(ma
, "adjust_time", &u
->adjust_time
) < 0) {
959 pa_log("Failed to parse adjust_time value");
963 master_name
= pa_modargs_get_value(ma
, "master", NULL
);
964 slaves
= pa_modargs_get_value(ma
, "slaves", NULL
);
965 if (!master_name
!= !slaves
) {
966 pa_log("No master or slave sinks specified");
971 if (!(master_sink
= pa_namereg_get(m
->core
, master_name
, PA_NAMEREG_SINK
, 1))) {
972 pa_log("Invalid master sink '%s'", master_name
);
976 ss
= master_sink
->sample_spec
;
977 u
->automatic
= FALSE
;
980 ss
= m
->core
->default_sample_spec
;
984 if ((pa_modargs_get_sample_spec(ma
, &ss
) < 0)) {
985 pa_log("Invalid sample specification.");
989 if (master_sink
&& ss
.channels
== master_sink
->sample_spec
.channels
)
990 map
= master_sink
->channel_map
;
992 pa_assert_se(pa_channel_map_init_auto(&map
, ss
.channels
, PA_CHANNEL_MAP_AUX
));
993 pa_channel_map_init_auto(&map
, ss
.channels
, PA_CHANNEL_MAP_DEFAULT
);
996 if ((pa_modargs_get_channel_map(ma
, NULL
, &map
) < 0)) {
997 pa_log("Invalid channel map.");
1001 if (ss
.channels
!= map
.channels
) {
1002 pa_log("Channel map and sample specification don't match.");
1006 if (!(u
->sink
= pa_sink_new(m
->core
, __FILE__
, pa_modargs_get_value(ma
, "sink_name", DEFAULT_SINK_NAME
), 0, &ss
, &map
))) {
1007 pa_log("Failed to create sink");
1011 u
->sink
->parent
.process_msg
= sink_process_msg
;
1012 u
->sink
->get_latency
= sink_get_latency_cb
;
1013 u
->sink
->set_state
= sink_set_state
;
1014 u
->sink
->userdata
= u
;
1016 u
->sink
->flags
= PA_SINK_LATENCY
;
1017 pa_sink_set_module(u
->sink
, m
);
1018 pa_sink_set_description(u
->sink
, "Simultaneous output");
1019 pa_sink_set_rtpoll(u
->sink
, u
->rtpoll
);
1020 pa_sink_set_asyncmsgq(u
->sink
, u
->thread_mq
.inq
);
1022 u
->block_size
= pa_bytes_per_second(&ss
) / 20; /* 50 ms */
1023 if (u
->block_size
<= 0)
1024 u
->block_size
= pa_frame_size(&ss
);
1026 if (!u
->automatic
) {
1027 const char*split_state
;
1031 /* The master and slaves have been specified manually */
1033 if (!(u
->master
= output_new(u
, master_sink
))) {
1034 pa_log("Failed to create master sink input on sink '%s'.", master_sink
->name
);
1039 while ((n
= pa_split(slaves
, ",", &split_state
))) {
1040 pa_sink
*slave_sink
;
1042 if (!(slave_sink
= pa_namereg_get(m
->core
, n
, PA_NAMEREG_SINK
, 1)) || slave_sink
== u
->sink
) {
1043 pa_log("Invalid slave sink '%s'", n
);
1050 if (!output_new(u
, slave_sink
)) {
1051 pa_log("Failed to create slave sink input on sink '%s'.", slave_sink
->name
);
1056 if (pa_idxset_size(u
->outputs
) <= 1)
1057 pa_log_warn("No slave sinks specified.");
1059 u
->sink_new_slot
= NULL
;
1064 /* We're in automatic mode, we elect one hw sink to the master
1065 * and attach all other hw sinks as slaves to it */
1067 for (s
= pa_idxset_first(m
->core
->sinks
, &idx
); s
; s
= pa_idxset_next(m
->core
->sinks
, &idx
)) {
1069 if (!(s
->flags
& PA_SINK_HARDWARE
) || s
== u
->sink
)
1072 if (!output_new(u
, s
)) {
1073 pa_log("Failed to create sink input on sink '%s'.", s
->name
);
1078 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
);
1081 u
->sink_unlink_slot
= pa_hook_connect(&m
->core
->hooks
[PA_CORE_HOOK_SINK_UNLINK
], (pa_hook_cb_t
) sink_unlink_hook_cb
, u
);
1082 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
);
1084 pick_master(u
, NULL
);
1086 if (!(u
->thread
= pa_thread_new(thread_func
, u
))) {
1087 pa_log("Failed to create thread.");
1091 /* Activate the sink and the sink inputs */
1092 pa_sink_put(u
->sink
);
1094 for (o
= pa_idxset_first(u
->outputs
, &idx
); o
; o
= pa_idxset_next(u
->outputs
, &idx
))
1096 pa_sink_input_put(o
->sink_input
);
1098 if (u
->adjust_time
> 0) {
1100 pa_gettimeofday(&tv
);
1101 tv
.tv_sec
+= u
->adjust_time
;
1102 u
->time_event
= m
->core
->mainloop
->time_new(m
->core
->mainloop
, &tv
, time_callback
, u
);
1105 pa_modargs_free(ma
);
1112 pa_modargs_free(ma
);
1119 static void output_free(struct output
*o
) {
1122 pick_master(o
->userdata
, o
);
1126 pa_assert_se(pa_idxset_remove_by_data(o
->userdata
->outputs
, o
, NULL
));
1128 update_description(o
->userdata
);
1130 if (o
->inq_rtpoll_item
)
1131 pa_rtpoll_item_free(o
->inq_rtpoll_item
);
1133 if (o
->outq_rtpoll_item
)
1134 pa_rtpoll_item_free(o
->outq_rtpoll_item
);
1137 pa_asyncmsgq_unref(o
->inq
);
1140 pa_asyncmsgq_unref(o
->outq
);
1143 pa_memblockq_free(o
->memblockq
);
1148 void pa__done(pa_module
*m
) {
1154 if (!(u
= m
->userdata
))
1157 if (u
->sink_new_slot
)
1158 pa_hook_slot_free(u
->sink_new_slot
);
1160 if (u
->sink_unlink_slot
)
1161 pa_hook_slot_free(u
->sink_unlink_slot
);
1163 if (u
->sink_state_changed_slot
)
1164 pa_hook_slot_free(u
->sink_state_changed_slot
);
1167 while ((o
= pa_idxset_first(u
->outputs
, NULL
)))
1170 pa_idxset_free(u
->outputs
, NULL
, NULL
);
1174 pa_sink_unlink(u
->sink
);
1177 pa_asyncmsgq_send(u
->thread_mq
.inq
, NULL
, PA_MESSAGE_SHUTDOWN
, NULL
, 0, NULL
);
1178 pa_thread_free(u
->thread
);
1181 pa_thread_mq_done(&u
->thread_mq
);
1184 pa_sink_unref(u
->sink
);
1187 pa_rtpoll_free(u
->rtpoll
);
1190 u
->core
->mainloop
->time_free(u
->time_event
);