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
);