2 This file is part of PulseAudio.
4 Copyright 2004-2008 Lennart Poettering
5 Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
7 PulseAudio is free software; you can redistribute it and/or modify
8 it under the terms of the GNU Lesser General Public License as published
9 by the Free Software Foundation; either version 2.1 of the License,
10 or (at your option) any later version.
12 PulseAudio is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 General Public License for more details.
17 You should have received a copy of the GNU Lesser General Public License
18 along with PulseAudio; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
30 #include <asoundlib.h>
32 #include <pulse/rtclock.h>
33 #include <pulse/timeval.h>
34 #include <pulse/volume.h>
35 #include <pulse/xmalloc.h>
37 #include <pulsecore/core.h>
38 #include <pulsecore/i18n.h>
39 #include <pulsecore/module.h>
40 #include <pulsecore/memchunk.h>
41 #include <pulsecore/sink.h>
42 #include <pulsecore/modargs.h>
43 #include <pulsecore/core-rtclock.h>
44 #include <pulsecore/core-util.h>
45 #include <pulsecore/sample-util.h>
46 #include <pulsecore/log.h>
47 #include <pulsecore/macro.h>
48 #include <pulsecore/thread.h>
49 #include <pulsecore/thread-mq.h>
50 #include <pulsecore/rtpoll.h>
51 #include <pulsecore/time-smoother.h>
53 #include <modules/reserve-wrap.h>
55 #include "alsa-util.h"
56 #include "alsa-source.h"
58 /* #define DEBUG_TIMING */
60 #define DEFAULT_DEVICE "default"
62 #define DEFAULT_TSCHED_BUFFER_USEC (2*PA_USEC_PER_SEC) /* 2s */
63 #define DEFAULT_TSCHED_WATERMARK_USEC (20*PA_USEC_PER_MSEC) /* 20ms */
65 #define TSCHED_WATERMARK_INC_STEP_USEC (10*PA_USEC_PER_MSEC) /* 10ms */
66 #define TSCHED_WATERMARK_DEC_STEP_USEC (5*PA_USEC_PER_MSEC) /* 5ms */
67 #define TSCHED_WATERMARK_VERIFY_AFTER_USEC (20*PA_USEC_PER_SEC) /* 20s */
68 #define TSCHED_WATERMARK_INC_THRESHOLD_USEC (0*PA_USEC_PER_MSEC) /* 0ms */
69 #define TSCHED_WATERMARK_DEC_THRESHOLD_USEC (100*PA_USEC_PER_MSEC) /* 100ms */
70 #define TSCHED_WATERMARK_STEP_USEC (10*PA_USEC_PER_MSEC) /* 10ms */
72 #define TSCHED_MIN_SLEEP_USEC (10*PA_USEC_PER_MSEC) /* 10ms */
73 #define TSCHED_MIN_WAKEUP_USEC (4*PA_USEC_PER_MSEC) /* 4ms */
75 #define SMOOTHER_WINDOW_USEC (10*PA_USEC_PER_SEC) /* 10s */
76 #define SMOOTHER_ADJUST_USEC (1*PA_USEC_PER_SEC) /* 1s */
78 #define SMOOTHER_MIN_INTERVAL (2*PA_USEC_PER_MSEC) /* 2ms */
79 #define SMOOTHER_MAX_INTERVAL (200*PA_USEC_PER_MSEC) /* 200ms */
81 #define VOLUME_ACCURACY (PA_VOLUME_NORM/100)
89 pa_thread_mq thread_mq
;
92 snd_pcm_t
*pcm_handle
;
95 pa_alsa_fdlist
*mixer_fdl
;
96 pa_alsa_mixer_pdata
*mixer_pd
;
97 snd_mixer_t
*mixer_handle
;
98 pa_alsa_path_set
*mixer_path_set
;
99 pa_alsa_path
*mixer_path
;
101 pa_cvolume hardware_volume
;
110 tsched_watermark_ref
,
116 watermark_inc_threshold
,
117 watermark_dec_threshold
;
119 pa_usec_t watermark_dec_not_before
;
120 pa_usec_t min_latency_ref
;
122 char *device_name
; /* name of the PCM device */
123 char *control_device
; /* name of the control device */
125 pa_bool_t use_mmap
:1, use_tsched
:1, deferred_volume
:1, fixed_latency_range
:1;
129 pa_rtpoll_item
*alsa_rtpoll_item
;
131 pa_smoother
*smoother
;
133 pa_usec_t smoother_interval
;
134 pa_usec_t last_smoother_update
;
136 pa_reserve_wrapper
*reserve
;
137 pa_hook_slot
*reserve_slot
;
138 pa_reserve_monitor_wrapper
*monitor
;
139 pa_hook_slot
*monitor_slot
;
142 pa_alsa_ucm_mapping_context
*ucm_context
;
145 static void userdata_free(struct userdata
*u
);
147 static pa_hook_result_t
reserve_cb(pa_reserve_wrapper
*r
, void *forced
, struct userdata
*u
) {
151 pa_log_debug("Suspending source %s, because another application requested us to release the device.", u
->source
->name
);
153 if (pa_source_suspend(u
->source
, TRUE
, PA_SUSPEND_APPLICATION
) < 0)
154 return PA_HOOK_CANCEL
;
159 static void reserve_done(struct userdata
*u
) {
162 if (u
->reserve_slot
) {
163 pa_hook_slot_free(u
->reserve_slot
);
164 u
->reserve_slot
= NULL
;
168 pa_reserve_wrapper_unref(u
->reserve
);
173 static void reserve_update(struct userdata
*u
) {
174 const char *description
;
177 if (!u
->source
|| !u
->reserve
)
180 if ((description
= pa_proplist_gets(u
->source
->proplist
, PA_PROP_DEVICE_DESCRIPTION
)))
181 pa_reserve_wrapper_set_application_device_name(u
->reserve
, description
);
184 static int reserve_init(struct userdata
*u
, const char *dname
) {
193 if (pa_in_system_mode())
196 if (!(rname
= pa_alsa_get_reserve_name(dname
)))
199 /* We are resuming, try to lock the device */
200 u
->reserve
= pa_reserve_wrapper_get(u
->core
, rname
);
208 pa_assert(!u
->reserve_slot
);
209 u
->reserve_slot
= pa_hook_connect(pa_reserve_wrapper_hook(u
->reserve
), PA_HOOK_NORMAL
, (pa_hook_cb_t
) reserve_cb
, u
);
214 static pa_hook_result_t
monitor_cb(pa_reserve_monitor_wrapper
*w
, void* busy
, struct userdata
*u
) {
218 if (PA_PTR_TO_UINT(busy
) && !u
->reserve
) {
219 pa_log_debug("Suspending source %s, because another application is blocking the access to the device.", u
->source
->name
);
220 pa_source_suspend(u
->source
, true, PA_SUSPEND_APPLICATION
);
222 pa_log_debug("Resuming source %s, because other applications aren't blocking access to the device any more.", u
->source
->name
);
223 pa_source_suspend(u
->source
, false, PA_SUSPEND_APPLICATION
);
229 static void monitor_done(struct userdata
*u
) {
232 if (u
->monitor_slot
) {
233 pa_hook_slot_free(u
->monitor_slot
);
234 u
->monitor_slot
= NULL
;
238 pa_reserve_monitor_wrapper_unref(u
->monitor
);
243 static int reserve_monitor_init(struct userdata
*u
, const char *dname
) {
249 if (pa_in_system_mode())
252 if (!(rname
= pa_alsa_get_reserve_name(dname
)))
255 /* We are resuming, try to lock the device */
256 u
->monitor
= pa_reserve_monitor_wrapper_get(u
->core
, rname
);
262 pa_assert(!u
->monitor_slot
);
263 u
->monitor_slot
= pa_hook_connect(pa_reserve_monitor_wrapper_hook(u
->monitor
), PA_HOOK_NORMAL
, (pa_hook_cb_t
) monitor_cb
, u
);
268 static void fix_min_sleep_wakeup(struct userdata
*u
) {
269 size_t max_use
, max_use_2
;
272 pa_assert(u
->use_tsched
);
274 max_use
= u
->hwbuf_size
- u
->hwbuf_unused
;
275 max_use_2
= pa_frame_align(max_use
/2, &u
->source
->sample_spec
);
277 u
->min_sleep
= pa_usec_to_bytes(TSCHED_MIN_SLEEP_USEC
, &u
->source
->sample_spec
);
278 u
->min_sleep
= PA_CLAMP(u
->min_sleep
, u
->frame_size
, max_use_2
);
280 u
->min_wakeup
= pa_usec_to_bytes(TSCHED_MIN_WAKEUP_USEC
, &u
->source
->sample_spec
);
281 u
->min_wakeup
= PA_CLAMP(u
->min_wakeup
, u
->frame_size
, max_use_2
);
284 static void fix_tsched_watermark(struct userdata
*u
) {
287 pa_assert(u
->use_tsched
);
289 max_use
= u
->hwbuf_size
- u
->hwbuf_unused
;
291 if (u
->tsched_watermark
> max_use
- u
->min_sleep
)
292 u
->tsched_watermark
= max_use
- u
->min_sleep
;
294 if (u
->tsched_watermark
< u
->min_wakeup
)
295 u
->tsched_watermark
= u
->min_wakeup
;
298 static void increase_watermark(struct userdata
*u
) {
299 size_t old_watermark
;
300 pa_usec_t old_min_latency
, new_min_latency
;
303 pa_assert(u
->use_tsched
);
305 /* First, just try to increase the watermark */
306 old_watermark
= u
->tsched_watermark
;
307 u
->tsched_watermark
= PA_MIN(u
->tsched_watermark
* 2, u
->tsched_watermark
+ u
->watermark_inc_step
);
308 fix_tsched_watermark(u
);
310 if (old_watermark
!= u
->tsched_watermark
) {
311 pa_log_info("Increasing wakeup watermark to %0.2f ms",
312 (double) pa_bytes_to_usec(u
->tsched_watermark
, &u
->source
->sample_spec
) / PA_USEC_PER_MSEC
);
316 /* Hmm, we cannot increase the watermark any further, hence let's
317 raise the latency unless doing so was disabled in
319 if (u
->fixed_latency_range
)
322 old_min_latency
= u
->source
->thread_info
.min_latency
;
323 new_min_latency
= PA_MIN(old_min_latency
* 2, old_min_latency
+ TSCHED_WATERMARK_INC_STEP_USEC
);
324 new_min_latency
= PA_MIN(new_min_latency
, u
->source
->thread_info
.max_latency
);
326 if (old_min_latency
!= new_min_latency
) {
327 pa_log_info("Increasing minimal latency to %0.2f ms",
328 (double) new_min_latency
/ PA_USEC_PER_MSEC
);
330 pa_source_set_latency_range_within_thread(u
->source
, new_min_latency
, u
->source
->thread_info
.max_latency
);
333 /* When we reach this we're officialy fucked! */
336 static void decrease_watermark(struct userdata
*u
) {
337 size_t old_watermark
;
341 pa_assert(u
->use_tsched
);
343 now
= pa_rtclock_now();
345 if (u
->watermark_dec_not_before
<= 0)
348 if (u
->watermark_dec_not_before
> now
)
351 old_watermark
= u
->tsched_watermark
;
353 if (u
->tsched_watermark
< u
->watermark_dec_step
)
354 u
->tsched_watermark
= u
->tsched_watermark
/ 2;
356 u
->tsched_watermark
= PA_MAX(u
->tsched_watermark
/ 2, u
->tsched_watermark
- u
->watermark_dec_step
);
358 fix_tsched_watermark(u
);
360 if (old_watermark
!= u
->tsched_watermark
)
361 pa_log_info("Decreasing wakeup watermark to %0.2f ms",
362 (double) pa_bytes_to_usec(u
->tsched_watermark
, &u
->source
->sample_spec
) / PA_USEC_PER_MSEC
);
364 /* We don't change the latency range*/
367 u
->watermark_dec_not_before
= now
+ TSCHED_WATERMARK_VERIFY_AFTER_USEC
;
370 static void hw_sleep_time(struct userdata
*u
, pa_usec_t
*sleep_usec
, pa_usec_t
*process_usec
) {
373 pa_assert(sleep_usec
);
374 pa_assert(process_usec
);
377 pa_assert(u
->use_tsched
);
379 usec
= pa_source_get_requested_latency_within_thread(u
->source
);
381 if (usec
== (pa_usec_t
) -1)
382 usec
= pa_bytes_to_usec(u
->hwbuf_size
, &u
->source
->sample_spec
);
384 wm
= pa_bytes_to_usec(u
->tsched_watermark
, &u
->source
->sample_spec
);
389 *sleep_usec
= usec
- wm
;
393 pa_log_debug("Buffer time: %lu ms; Sleep time: %lu ms; Process time: %lu ms",
394 (unsigned long) (usec
/ PA_USEC_PER_MSEC
),
395 (unsigned long) (*sleep_usec
/ PA_USEC_PER_MSEC
),
396 (unsigned long) (*process_usec
/ PA_USEC_PER_MSEC
));
400 static int try_recover(struct userdata
*u
, const char *call
, int err
) {
405 pa_log_debug("%s: %s", call
, pa_alsa_strerror(err
));
407 pa_assert(err
!= -EAGAIN
);
410 pa_log_debug("%s: Buffer overrun!", call
);
412 if (err
== -ESTRPIPE
)
413 pa_log_debug("%s: System suspended!", call
);
415 if ((err
= snd_pcm_recover(u
->pcm_handle
, err
, 1)) < 0) {
416 pa_log("%s: %s", call
, pa_alsa_strerror(err
));
424 static size_t check_left_to_record(struct userdata
*u
, size_t n_bytes
, pa_bool_t on_timeout
) {
425 size_t left_to_record
;
426 size_t rec_space
= u
->hwbuf_size
- u
->hwbuf_unused
;
427 pa_bool_t overrun
= FALSE
;
429 /* We use <= instead of < for this check here because an overrun
430 * only happens after the last sample was processed, not already when
431 * it is removed from the buffer. This is particularly important
432 * when block transfer is used. */
434 if (n_bytes
<= rec_space
)
435 left_to_record
= rec_space
- n_bytes
;
438 /* We got a dropout. What a mess! */
446 if (pa_log_ratelimit(PA_LOG_INFO
))
447 pa_log_info("Overrun!");
451 pa_log_debug("%0.2f ms left to record", (double) pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
) / PA_USEC_PER_MSEC
);
455 pa_bool_t reset_not_before
= TRUE
;
457 if (overrun
|| left_to_record
< u
->watermark_inc_threshold
)
458 increase_watermark(u
);
459 else if (left_to_record
> u
->watermark_dec_threshold
) {
460 reset_not_before
= FALSE
;
462 /* We decrease the watermark only if have actually
463 * been woken up by a timeout. If something else woke
464 * us up it's too easy to fulfill the deadlines... */
467 decrease_watermark(u
);
470 if (reset_not_before
)
471 u
->watermark_dec_not_before
= 0;
474 return left_to_record
;
477 static int mmap_read(struct userdata
*u
, pa_usec_t
*sleep_usec
, pa_bool_t polled
, pa_bool_t on_timeout
) {
478 pa_bool_t work_done
= FALSE
;
479 pa_usec_t max_sleep_usec
= 0, process_usec
= 0;
480 size_t left_to_record
;
484 pa_source_assert_ref(u
->source
);
487 hw_sleep_time(u
, &max_sleep_usec
, &process_usec
);
493 pa_bool_t after_avail
= TRUE
;
495 if (PA_UNLIKELY((n
= pa_alsa_safe_avail(u
->pcm_handle
, u
->hwbuf_size
, &u
->source
->sample_spec
)) < 0)) {
497 if ((r
= try_recover(u
, "snd_pcm_avail", (int) n
)) == 0)
503 n_bytes
= (size_t) n
* u
->frame_size
;
506 pa_log_debug("avail: %lu", (unsigned long) n_bytes
);
509 left_to_record
= check_left_to_record(u
, n_bytes
, on_timeout
);
514 pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
) > process_usec
+max_sleep_usec
/2) {
516 pa_log_debug("Not reading, because too early.");
521 if (PA_UNLIKELY(n_bytes
<= 0)) {
525 char *dn
= pa_alsa_get_driver_name_by_pcm(u
->pcm_handle
);
526 pa_log(_("ALSA woke us up to read new data from the device, but there was actually nothing to read!\n"
527 "Most likely this is a bug in the ALSA driver '%s'. Please report this issue to the ALSA developers.\n"
528 "We were woken up with POLLIN set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail."),
534 pa_log_debug("Not reading, because not necessary.");
542 pa_log_debug("Not filling up, because already too many iterations.");
551 pa_log_debug("Reading");
558 const snd_pcm_channel_area_t
*areas
;
559 snd_pcm_uframes_t offset
, frames
;
560 snd_pcm_sframes_t sframes
;
562 frames
= (snd_pcm_uframes_t
) (n_bytes
/ u
->frame_size
);
563 /* pa_log_debug("%lu frames to read", (unsigned long) frames); */
565 if (PA_UNLIKELY((err
= pa_alsa_safe_mmap_begin(u
->pcm_handle
, &areas
, &offset
, &frames
, u
->hwbuf_size
, &u
->source
->sample_spec
)) < 0)) {
567 if (!after_avail
&& err
== -EAGAIN
)
570 if ((r
= try_recover(u
, "snd_pcm_mmap_begin", err
)) == 0)
576 /* Make sure that if these memblocks need to be copied they will fit into one slot */
577 if (frames
> pa_mempool_block_size_max(u
->core
->mempool
)/u
->frame_size
)
578 frames
= pa_mempool_block_size_max(u
->core
->mempool
)/u
->frame_size
;
580 if (!after_avail
&& frames
== 0)
583 pa_assert(frames
> 0);
586 /* Check these are multiples of 8 bit */
587 pa_assert((areas
[0].first
& 7) == 0);
588 pa_assert((areas
[0].step
& 7)== 0);
590 /* We assume a single interleaved memory buffer */
591 pa_assert((areas
[0].first
>> 3) == 0);
592 pa_assert((areas
[0].step
>> 3) == u
->frame_size
);
594 p
= (uint8_t*) areas
[0].addr
+ (offset
* u
->frame_size
);
596 chunk
.memblock
= pa_memblock_new_fixed(u
->core
->mempool
, p
, frames
* u
->frame_size
, TRUE
);
597 chunk
.length
= pa_memblock_get_length(chunk
.memblock
);
600 pa_source_post(u
->source
, &chunk
);
601 pa_memblock_unref_fixed(chunk
.memblock
);
603 if (PA_UNLIKELY((sframes
= snd_pcm_mmap_commit(u
->pcm_handle
, offset
, frames
)) < 0)) {
605 if ((r
= try_recover(u
, "snd_pcm_mmap_commit", (int) sframes
)) == 0)
613 u
->read_count
+= frames
* u
->frame_size
;
616 pa_log_debug("Read %lu bytes (of possible %lu bytes)", (unsigned long) (frames
* u
->frame_size
), (unsigned long) n_bytes
);
619 if ((size_t) frames
* u
->frame_size
>= n_bytes
)
622 n_bytes
-= (size_t) frames
* u
->frame_size
;
627 *sleep_usec
= pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
);
628 process_usec
= pa_bytes_to_usec(u
->tsched_watermark
, &u
->source
->sample_spec
);
630 if (*sleep_usec
> process_usec
)
631 *sleep_usec
-= process_usec
;
636 return work_done
? 1 : 0;
639 static int unix_read(struct userdata
*u
, pa_usec_t
*sleep_usec
, pa_bool_t polled
, pa_bool_t on_timeout
) {
640 int work_done
= FALSE
;
641 pa_usec_t max_sleep_usec
= 0, process_usec
= 0;
642 size_t left_to_record
;
646 pa_source_assert_ref(u
->source
);
649 hw_sleep_time(u
, &max_sleep_usec
, &process_usec
);
655 pa_bool_t after_avail
= TRUE
;
657 if (PA_UNLIKELY((n
= pa_alsa_safe_avail(u
->pcm_handle
, u
->hwbuf_size
, &u
->source
->sample_spec
)) < 0)) {
659 if ((r
= try_recover(u
, "snd_pcm_avail", (int) n
)) == 0)
665 n_bytes
= (size_t) n
* u
->frame_size
;
666 left_to_record
= check_left_to_record(u
, n_bytes
, on_timeout
);
671 pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
) > process_usec
+max_sleep_usec
/2)
674 if (PA_UNLIKELY(n_bytes
<= 0)) {
678 char *dn
= pa_alsa_get_driver_name_by_pcm(u
->pcm_handle
);
679 pa_log(_("ALSA woke us up to read new data from the device, but there was actually nothing to read!\n"
680 "Most likely this is a bug in the ALSA driver '%s'. Please report this issue to the ALSA developers.\n"
681 "We were woken up with POLLIN set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail."),
691 pa_log_debug("Not filling up, because already too many iterations.");
701 snd_pcm_sframes_t frames
;
704 chunk
.memblock
= pa_memblock_new(u
->core
->mempool
, (size_t) -1);
706 frames
= (snd_pcm_sframes_t
) (pa_memblock_get_length(chunk
.memblock
) / u
->frame_size
);
708 if (frames
> (snd_pcm_sframes_t
) (n_bytes
/u
->frame_size
))
709 frames
= (snd_pcm_sframes_t
) (n_bytes
/u
->frame_size
);
711 /* pa_log_debug("%lu frames to read", (unsigned long) n); */
713 p
= pa_memblock_acquire(chunk
.memblock
);
714 frames
= snd_pcm_readi(u
->pcm_handle
, (uint8_t*) p
, (snd_pcm_uframes_t
) frames
);
715 pa_memblock_release(chunk
.memblock
);
717 if (PA_UNLIKELY(frames
< 0)) {
718 pa_memblock_unref(chunk
.memblock
);
720 if (!after_avail
&& (int) frames
== -EAGAIN
)
723 if ((r
= try_recover(u
, "snd_pcm_readi", (int) frames
)) == 0)
729 if (!after_avail
&& frames
== 0) {
730 pa_memblock_unref(chunk
.memblock
);
734 pa_assert(frames
> 0);
738 chunk
.length
= (size_t) frames
* u
->frame_size
;
740 pa_source_post(u
->source
, &chunk
);
741 pa_memblock_unref(chunk
.memblock
);
745 u
->read_count
+= frames
* u
->frame_size
;
747 /* pa_log_debug("read %lu frames", (unsigned long) frames); */
749 if ((size_t) frames
* u
->frame_size
>= n_bytes
)
752 n_bytes
-= (size_t) frames
* u
->frame_size
;
757 *sleep_usec
= pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
);
758 process_usec
= pa_bytes_to_usec(u
->tsched_watermark
, &u
->source
->sample_spec
);
760 if (*sleep_usec
> process_usec
)
761 *sleep_usec
-= process_usec
;
766 return work_done
? 1 : 0;
769 static void update_smoother(struct userdata
*u
) {
770 snd_pcm_sframes_t delay
= 0;
773 pa_usec_t now1
= 0, now2
;
774 snd_pcm_status_t
*status
;
775 snd_htimestamp_t htstamp
= { 0, 0 };
777 snd_pcm_status_alloca(&status
);
780 pa_assert(u
->pcm_handle
);
782 /* Let's update the time smoother */
784 if (PA_UNLIKELY((err
= pa_alsa_safe_delay(u
->pcm_handle
, status
, &delay
, u
->hwbuf_size
, &u
->source
->sample_spec
, TRUE
)) < 0)) {
785 pa_log_warn("Failed to get delay: %s", pa_alsa_strerror(err
));
789 snd_pcm_status_get_htstamp(status
, &htstamp
);
790 now1
= pa_timespec_load(&htstamp
);
792 /* Hmm, if the timestamp is 0, then it wasn't set and we take the current time */
794 now1
= pa_rtclock_now();
796 /* check if the time since the last update is bigger than the interval */
797 if (u
->last_smoother_update
> 0)
798 if (u
->last_smoother_update
+ u
->smoother_interval
> now1
)
801 position
= u
->read_count
+ ((uint64_t) delay
* (uint64_t) u
->frame_size
);
802 now2
= pa_bytes_to_usec(position
, &u
->source
->sample_spec
);
804 pa_smoother_put(u
->smoother
, now1
, now2
);
806 u
->last_smoother_update
= now1
;
807 /* exponentially increase the update interval up to the MAX limit */
808 u
->smoother_interval
= PA_MIN (u
->smoother_interval
* 2, SMOOTHER_MAX_INTERVAL
);
811 static pa_usec_t
source_get_latency(struct userdata
*u
) {
813 pa_usec_t now1
, now2
;
817 now1
= pa_rtclock_now();
818 now2
= pa_smoother_get(u
->smoother
, now1
);
820 delay
= (int64_t) now2
- (int64_t) pa_bytes_to_usec(u
->read_count
, &u
->source
->sample_spec
);
822 return delay
>= 0 ? (pa_usec_t
) delay
: 0;
825 static int build_pollfd(struct userdata
*u
) {
827 pa_assert(u
->pcm_handle
);
829 if (u
->alsa_rtpoll_item
)
830 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
832 if (!(u
->alsa_rtpoll_item
= pa_alsa_build_pollfd(u
->pcm_handle
, u
->rtpoll
)))
838 /* Called from IO context */
839 static int suspend(struct userdata
*u
) {
841 pa_assert(u
->pcm_handle
);
843 pa_smoother_pause(u
->smoother
, pa_rtclock_now());
846 snd_pcm_close(u
->pcm_handle
);
847 u
->pcm_handle
= NULL
;
849 if (u
->alsa_rtpoll_item
) {
850 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
851 u
->alsa_rtpoll_item
= NULL
;
854 pa_log_info("Device suspended...");
859 /* Called from IO context */
860 static int update_sw_params(struct userdata
*u
) {
861 snd_pcm_uframes_t avail_min
;
866 /* Use the full buffer if no one asked us for anything specific */
872 if ((latency
= pa_source_get_requested_latency_within_thread(u
->source
)) != (pa_usec_t
) -1) {
875 pa_log_debug("latency set to %0.2fms", (double) latency
/ PA_USEC_PER_MSEC
);
877 b
= pa_usec_to_bytes(latency
, &u
->source
->sample_spec
);
879 /* We need at least one sample in our buffer */
881 if (PA_UNLIKELY(b
< u
->frame_size
))
884 u
->hwbuf_unused
= PA_LIKELY(b
< u
->hwbuf_size
) ? (u
->hwbuf_size
- b
) : 0;
887 fix_min_sleep_wakeup(u
);
888 fix_tsched_watermark(u
);
891 pa_log_debug("hwbuf_unused=%lu", (unsigned long) u
->hwbuf_unused
);
896 pa_usec_t sleep_usec
, process_usec
;
898 hw_sleep_time(u
, &sleep_usec
, &process_usec
);
899 avail_min
+= pa_usec_to_bytes(sleep_usec
, &u
->source
->sample_spec
) / u
->frame_size
;
902 pa_log_debug("setting avail_min=%lu", (unsigned long) avail_min
);
904 if ((err
= pa_alsa_set_sw_params(u
->pcm_handle
, avail_min
, !u
->use_tsched
)) < 0) {
905 pa_log("Failed to set software parameters: %s", pa_alsa_strerror(err
));
912 /* Called from IO Context on unsuspend or from main thread when creating source */
913 static void reset_watermark(struct userdata
*u
, size_t tsched_watermark
, pa_sample_spec
*ss
,
916 u
->tsched_watermark
= pa_usec_to_bytes_round_up(pa_bytes_to_usec_round_up(tsched_watermark
, ss
),
917 &u
->source
->sample_spec
);
919 u
->watermark_inc_step
= pa_usec_to_bytes(TSCHED_WATERMARK_INC_STEP_USEC
, &u
->source
->sample_spec
);
920 u
->watermark_dec_step
= pa_usec_to_bytes(TSCHED_WATERMARK_DEC_STEP_USEC
, &u
->source
->sample_spec
);
922 u
->watermark_inc_threshold
= pa_usec_to_bytes_round_up(TSCHED_WATERMARK_INC_THRESHOLD_USEC
, &u
->source
->sample_spec
);
923 u
->watermark_dec_threshold
= pa_usec_to_bytes_round_up(TSCHED_WATERMARK_DEC_THRESHOLD_USEC
, &u
->source
->sample_spec
);
925 fix_min_sleep_wakeup(u
);
926 fix_tsched_watermark(u
);
929 pa_source_set_latency_range_within_thread(u
->source
,
931 pa_bytes_to_usec(u
->hwbuf_size
, ss
));
933 pa_source_set_latency_range(u
->source
,
935 pa_bytes_to_usec(u
->hwbuf_size
, ss
));
937 /* work-around assert in pa_source_set_latency_within_thead,
938 keep track of min_latency and reuse it when
939 this routine is called from IO context */
940 u
->min_latency_ref
= u
->source
->thread_info
.min_latency
;
943 pa_log_info("Time scheduling watermark is %0.2fms",
944 (double) pa_bytes_to_usec(u
->tsched_watermark
, ss
) / PA_USEC_PER_MSEC
);
947 /* Called from IO context */
948 static int unsuspend(struct userdata
*u
) {
952 snd_pcm_uframes_t period_size
, buffer_size
;
955 pa_assert(!u
->pcm_handle
);
957 pa_log_info("Trying resume...");
959 if ((err
= snd_pcm_open(&u
->pcm_handle
, u
->device_name
, SND_PCM_STREAM_CAPTURE
,
961 SND_PCM_NO_AUTO_RESAMPLE
|
962 SND_PCM_NO_AUTO_CHANNELS
|
963 SND_PCM_NO_AUTO_FORMAT
)) < 0) {
964 pa_log("Error opening PCM device %s: %s", u
->device_name
, pa_alsa_strerror(err
));
968 ss
= u
->source
->sample_spec
;
969 period_size
= u
->fragment_size
/ u
->frame_size
;
970 buffer_size
= u
->hwbuf_size
/ u
->frame_size
;
974 if ((err
= pa_alsa_set_hw_params(u
->pcm_handle
, &ss
, &period_size
, &buffer_size
, 0, &b
, &d
, TRUE
)) < 0) {
975 pa_log("Failed to set hardware parameters: %s", pa_alsa_strerror(err
));
979 if (b
!= u
->use_mmap
|| d
!= u
->use_tsched
) {
980 pa_log_warn("Resume failed, couldn't get original access mode.");
984 if (!pa_sample_spec_equal(&ss
, &u
->source
->sample_spec
)) {
985 pa_log_warn("Resume failed, couldn't restore original sample settings.");
989 if (period_size
*u
->frame_size
!= u
->fragment_size
||
990 buffer_size
*u
->frame_size
!= u
->hwbuf_size
) {
991 pa_log_warn("Resume failed, couldn't restore original fragment settings. (Old: %lu/%lu, New %lu/%lu)",
992 (unsigned long) u
->hwbuf_size
, (unsigned long) u
->fragment_size
,
993 (unsigned long) (buffer_size
*u
->frame_size
), (unsigned long) (period_size
*u
->frame_size
));
997 if (update_sw_params(u
) < 0)
1000 if (build_pollfd(u
) < 0)
1003 /* FIXME: We need to reload the volume somehow */
1006 pa_smoother_reset(u
->smoother
, pa_rtclock_now(), TRUE
);
1007 u
->smoother_interval
= SMOOTHER_MIN_INTERVAL
;
1008 u
->last_smoother_update
= 0;
1012 /* reset the watermark to the value defined when source was created */
1014 reset_watermark(u
, u
->tsched_watermark_ref
, &u
->source
->sample_spec
, TRUE
);
1016 pa_log_info("Resumed successfully...");
1021 if (u
->pcm_handle
) {
1022 snd_pcm_close(u
->pcm_handle
);
1023 u
->pcm_handle
= NULL
;
1029 /* Called from IO context */
1030 static int source_process_msg(pa_msgobject
*o
, int code
, void *data
, int64_t offset
, pa_memchunk
*chunk
) {
1031 struct userdata
*u
= PA_SOURCE(o
)->userdata
;
1035 case PA_SOURCE_MESSAGE_GET_LATENCY
: {
1039 r
= source_get_latency(u
);
1041 *((pa_usec_t
*) data
) = r
;
1046 case PA_SOURCE_MESSAGE_SET_STATE
:
1048 switch ((pa_source_state_t
) PA_PTR_TO_UINT(data
)) {
1050 case PA_SOURCE_SUSPENDED
: {
1053 pa_assert(PA_SOURCE_IS_OPENED(u
->source
->thread_info
.state
));
1055 if ((r
= suspend(u
)) < 0)
1061 case PA_SOURCE_IDLE
:
1062 case PA_SOURCE_RUNNING
: {
1065 if (u
->source
->thread_info
.state
== PA_SOURCE_INIT
) {
1066 if (build_pollfd(u
) < 0)
1070 if (u
->source
->thread_info
.state
== PA_SOURCE_SUSPENDED
) {
1071 if ((r
= unsuspend(u
)) < 0)
1078 case PA_SOURCE_UNLINKED
:
1079 case PA_SOURCE_INIT
:
1080 case PA_SOURCE_INVALID_STATE
:
1087 return pa_source_process_msg(o
, code
, data
, offset
, chunk
);
1090 /* Called from main context */
1091 static int source_set_state_cb(pa_source
*s
, pa_source_state_t new_state
) {
1092 pa_source_state_t old_state
;
1095 pa_source_assert_ref(s
);
1096 pa_assert_se(u
= s
->userdata
);
1098 old_state
= pa_source_get_state(u
->source
);
1100 if (PA_SOURCE_IS_OPENED(old_state
) && new_state
== PA_SOURCE_SUSPENDED
)
1102 else if (old_state
== PA_SOURCE_SUSPENDED
&& PA_SOURCE_IS_OPENED(new_state
))
1103 if (reserve_init(u
, u
->device_name
) < 0)
1104 return -PA_ERR_BUSY
;
1109 static int ctl_mixer_callback(snd_mixer_elem_t
*elem
, unsigned int mask
) {
1110 struct userdata
*u
= snd_mixer_elem_get_callback_private(elem
);
1113 pa_assert(u
->mixer_handle
);
1115 if (mask
== SND_CTL_EVENT_MASK_REMOVE
)
1118 if (!PA_SOURCE_IS_LINKED(u
->source
->state
))
1121 if (u
->source
->suspend_cause
& PA_SUSPEND_SESSION
) {
1122 pa_source_set_mixer_dirty(u
->source
, TRUE
);
1126 if (mask
& SND_CTL_EVENT_MASK_VALUE
) {
1127 pa_source_get_volume(u
->source
, TRUE
);
1128 pa_source_get_mute(u
->source
, TRUE
);
1134 static int io_mixer_callback(snd_mixer_elem_t
*elem
, unsigned int mask
) {
1135 struct userdata
*u
= snd_mixer_elem_get_callback_private(elem
);
1138 pa_assert(u
->mixer_handle
);
1140 if (mask
== SND_CTL_EVENT_MASK_REMOVE
)
1143 if (u
->source
->suspend_cause
& PA_SUSPEND_SESSION
) {
1144 pa_source_set_mixer_dirty(u
->source
, TRUE
);
1148 if (mask
& SND_CTL_EVENT_MASK_VALUE
)
1149 pa_source_update_volume_and_mute(u
->source
);
1154 static void source_get_volume_cb(pa_source
*s
) {
1155 struct userdata
*u
= s
->userdata
;
1157 char vol_str_pcnt
[PA_CVOLUME_SNPRINT_MAX
];
1160 pa_assert(u
->mixer_path
);
1161 pa_assert(u
->mixer_handle
);
1163 if (pa_alsa_path_get_volume(u
->mixer_path
, u
->mixer_handle
, &s
->channel_map
, &r
) < 0)
1166 /* Shift down by the base volume, so that 0dB becomes maximum volume */
1167 pa_sw_cvolume_multiply_scalar(&r
, &r
, s
->base_volume
);
1169 pa_log_debug("Read hardware volume: %s", pa_cvolume_snprint(vol_str_pcnt
, sizeof(vol_str_pcnt
), &r
));
1171 if (u
->mixer_path
->has_dB
) {
1172 char vol_str_db
[PA_SW_CVOLUME_SNPRINT_DB_MAX
];
1174 pa_log_debug(" in dB: %s", pa_sw_cvolume_snprint_dB(vol_str_db
, sizeof(vol_str_db
), &r
));
1177 if (pa_cvolume_equal(&u
->hardware_volume
, &r
))
1180 s
->real_volume
= u
->hardware_volume
= r
;
1182 /* Hmm, so the hardware volume changed, let's reset our software volume */
1183 if (u
->mixer_path
->has_dB
)
1184 pa_source_set_soft_volume(s
, NULL
);
1187 static void source_set_volume_cb(pa_source
*s
) {
1188 struct userdata
*u
= s
->userdata
;
1190 char vol_str_pcnt
[PA_CVOLUME_SNPRINT_MAX
];
1191 pa_bool_t deferred_volume
= !!(s
->flags
& PA_SOURCE_DEFERRED_VOLUME
);
1194 pa_assert(u
->mixer_path
);
1195 pa_assert(u
->mixer_handle
);
1197 /* Shift up by the base volume */
1198 pa_sw_cvolume_divide_scalar(&r
, &s
->real_volume
, s
->base_volume
);
1200 if (pa_alsa_path_set_volume(u
->mixer_path
, u
->mixer_handle
, &s
->channel_map
, &r
, deferred_volume
, !deferred_volume
) < 0)
1203 /* Shift down by the base volume, so that 0dB becomes maximum volume */
1204 pa_sw_cvolume_multiply_scalar(&r
, &r
, s
->base_volume
);
1206 u
->hardware_volume
= r
;
1208 if (u
->mixer_path
->has_dB
) {
1209 pa_cvolume new_soft_volume
;
1210 pa_bool_t accurate_enough
;
1211 char vol_str_db
[PA_SW_CVOLUME_SNPRINT_DB_MAX
];
1213 /* Match exactly what the user requested by software */
1214 pa_sw_cvolume_divide(&new_soft_volume
, &s
->real_volume
, &u
->hardware_volume
);
1216 /* If the adjustment to do in software is only minimal we
1217 * can skip it. That saves us CPU at the expense of a bit of
1220 (pa_cvolume_min(&new_soft_volume
) >= (PA_VOLUME_NORM
- VOLUME_ACCURACY
)) &&
1221 (pa_cvolume_max(&new_soft_volume
) <= (PA_VOLUME_NORM
+ VOLUME_ACCURACY
));
1223 pa_log_debug("Requested volume: %s", pa_cvolume_snprint(vol_str_pcnt
, sizeof(vol_str_pcnt
), &s
->real_volume
));
1224 pa_log_debug(" in dB: %s", pa_sw_cvolume_snprint_dB(vol_str_db
, sizeof(vol_str_db
), &s
->real_volume
));
1225 pa_log_debug("Got hardware volume: %s", pa_cvolume_snprint(vol_str_pcnt
, sizeof(vol_str_pcnt
), &u
->hardware_volume
));
1226 pa_log_debug(" in dB: %s", pa_sw_cvolume_snprint_dB(vol_str_db
, sizeof(vol_str_db
), &u
->hardware_volume
));
1227 pa_log_debug("Calculated software volume: %s (accurate-enough=%s)",
1228 pa_cvolume_snprint(vol_str_pcnt
, sizeof(vol_str_pcnt
), &new_soft_volume
),
1229 pa_yes_no(accurate_enough
));
1230 pa_log_debug(" in dB: %s", pa_sw_cvolume_snprint_dB(vol_str_db
, sizeof(vol_str_db
), &new_soft_volume
));
1232 if (!accurate_enough
)
1233 s
->soft_volume
= new_soft_volume
;
1236 pa_log_debug("Wrote hardware volume: %s", pa_cvolume_snprint(vol_str_pcnt
, sizeof(vol_str_pcnt
), &r
));
1238 /* We can't match exactly what the user requested, hence let's
1239 * at least tell the user about it */
1245 static void source_write_volume_cb(pa_source
*s
) {
1246 struct userdata
*u
= s
->userdata
;
1247 pa_cvolume hw_vol
= s
->thread_info
.current_hw_volume
;
1250 pa_assert(u
->mixer_path
);
1251 pa_assert(u
->mixer_handle
);
1252 pa_assert(s
->flags
& PA_SOURCE_DEFERRED_VOLUME
);
1254 /* Shift up by the base volume */
1255 pa_sw_cvolume_divide_scalar(&hw_vol
, &hw_vol
, s
->base_volume
);
1257 if (pa_alsa_path_set_volume(u
->mixer_path
, u
->mixer_handle
, &s
->channel_map
, &hw_vol
, TRUE
, TRUE
) < 0)
1258 pa_log_error("Writing HW volume failed");
1261 pa_bool_t accurate_enough
;
1263 /* Shift down by the base volume, so that 0dB becomes maximum volume */
1264 pa_sw_cvolume_multiply_scalar(&hw_vol
, &hw_vol
, s
->base_volume
);
1266 pa_sw_cvolume_divide(&tmp_vol
, &hw_vol
, &s
->thread_info
.current_hw_volume
);
1268 (pa_cvolume_min(&tmp_vol
) >= (PA_VOLUME_NORM
- VOLUME_ACCURACY
)) &&
1269 (pa_cvolume_max(&tmp_vol
) <= (PA_VOLUME_NORM
+ VOLUME_ACCURACY
));
1271 if (!accurate_enough
) {
1273 char db
[2][PA_SW_CVOLUME_SNPRINT_DB_MAX
];
1274 char pcnt
[2][PA_CVOLUME_SNPRINT_MAX
];
1277 pa_log_debug("Written HW volume did not match with the request: %s (request) != %s",
1278 pa_cvolume_snprint(vol
.pcnt
[0], sizeof(vol
.pcnt
[0]), &s
->thread_info
.current_hw_volume
),
1279 pa_cvolume_snprint(vol
.pcnt
[1], sizeof(vol
.pcnt
[1]), &hw_vol
));
1280 pa_log_debug(" in dB: %s (request) != %s",
1281 pa_sw_cvolume_snprint_dB(vol
.db
[0], sizeof(vol
.db
[0]), &s
->thread_info
.current_hw_volume
),
1282 pa_sw_cvolume_snprint_dB(vol
.db
[1], sizeof(vol
.db
[1]), &hw_vol
));
1287 static void source_get_mute_cb(pa_source
*s
) {
1288 struct userdata
*u
= s
->userdata
;
1292 pa_assert(u
->mixer_path
);
1293 pa_assert(u
->mixer_handle
);
1295 if (pa_alsa_path_get_mute(u
->mixer_path
, u
->mixer_handle
, &b
) < 0)
1301 static void source_set_mute_cb(pa_source
*s
) {
1302 struct userdata
*u
= s
->userdata
;
1305 pa_assert(u
->mixer_path
);
1306 pa_assert(u
->mixer_handle
);
1308 pa_alsa_path_set_mute(u
->mixer_path
, u
->mixer_handle
, s
->muted
);
1311 static void mixer_volume_init(struct userdata
*u
) {
1314 if (!u
->mixer_path
->has_volume
) {
1315 pa_source_set_write_volume_callback(u
->source
, NULL
);
1316 pa_source_set_get_volume_callback(u
->source
, NULL
);
1317 pa_source_set_set_volume_callback(u
->source
, NULL
);
1319 pa_log_info("Driver does not support hardware volume control, falling back to software volume control.");
1321 pa_source_set_get_volume_callback(u
->source
, source_get_volume_cb
);
1322 pa_source_set_set_volume_callback(u
->source
, source_set_volume_cb
);
1324 if (u
->mixer_path
->has_dB
&& u
->deferred_volume
) {
1325 pa_source_set_write_volume_callback(u
->source
, source_write_volume_cb
);
1326 pa_log_info("Successfully enabled deferred volume.");
1328 pa_source_set_write_volume_callback(u
->source
, NULL
);
1330 if (u
->mixer_path
->has_dB
) {
1331 pa_source_enable_decibel_volume(u
->source
, TRUE
);
1332 pa_log_info("Hardware volume ranges from %0.2f dB to %0.2f dB.", u
->mixer_path
->min_dB
, u
->mixer_path
->max_dB
);
1334 u
->source
->base_volume
= pa_sw_volume_from_dB(-u
->mixer_path
->max_dB
);
1335 u
->source
->n_volume_steps
= PA_VOLUME_NORM
+1;
1337 pa_log_info("Fixing base volume to %0.2f dB", pa_sw_volume_to_dB(u
->source
->base_volume
));
1339 pa_source_enable_decibel_volume(u
->source
, FALSE
);
1340 pa_log_info("Hardware volume ranges from %li to %li.", u
->mixer_path
->min_volume
, u
->mixer_path
->max_volume
);
1342 u
->source
->base_volume
= PA_VOLUME_NORM
;
1343 u
->source
->n_volume_steps
= u
->mixer_path
->max_volume
- u
->mixer_path
->min_volume
+ 1;
1346 pa_log_info("Using hardware volume control. Hardware dB scale %s.", u
->mixer_path
->has_dB
? "supported" : "not supported");
1349 if (!u
->mixer_path
->has_mute
) {
1350 pa_source_set_get_mute_callback(u
->source
, NULL
);
1351 pa_source_set_set_mute_callback(u
->source
, NULL
);
1352 pa_log_info("Driver does not support hardware mute control, falling back to software mute control.");
1354 pa_source_set_get_mute_callback(u
->source
, source_get_mute_cb
);
1355 pa_source_set_set_mute_callback(u
->source
, source_set_mute_cb
);
1356 pa_log_info("Using hardware mute control.");
1360 static int source_set_port_ucm_cb(pa_source
*s
, pa_device_port
*p
) {
1361 struct userdata
*u
= s
->userdata
;
1365 pa_assert(u
->ucm_context
);
1367 return pa_alsa_ucm_set_port(u
->ucm_context
, p
, FALSE
);
1370 static int source_set_port_cb(pa_source
*s
, pa_device_port
*p
) {
1371 struct userdata
*u
= s
->userdata
;
1372 pa_alsa_port_data
*data
;
1376 pa_assert(u
->mixer_handle
);
1378 data
= PA_DEVICE_PORT_DATA(p
);
1380 pa_assert_se(u
->mixer_path
= data
->path
);
1381 pa_alsa_path_select(u
->mixer_path
, data
->setting
, u
->mixer_handle
, s
->muted
);
1383 mixer_volume_init(u
);
1387 if (s
->flags
& PA_SOURCE_DEFERRED_VOLUME
) {
1388 if (s
->write_volume
)
1398 static void source_update_requested_latency_cb(pa_source
*s
) {
1399 struct userdata
*u
= s
->userdata
;
1401 pa_assert(u
->use_tsched
); /* only when timer scheduling is used
1402 * we can dynamically adjust the
1408 update_sw_params(u
);
1411 static pa_bool_t
source_update_rate_cb(pa_source
*s
, uint32_t rate
)
1413 struct userdata
*u
= s
->userdata
;
1415 pa_bool_t supported
= FALSE
;
1419 for (i
= 0; u
->rates
[i
]; i
++) {
1420 if (u
->rates
[i
] == rate
) {
1427 pa_log_info("Sink does not support sample rate of %d Hz", rate
);
1431 if (!PA_SOURCE_IS_OPENED(s
->state
)) {
1432 pa_log_info("Updating rate for device %s, new rate is %d", u
->device_name
, rate
);
1433 u
->source
->sample_spec
.rate
= rate
;
1440 static void thread_func(void *userdata
) {
1441 struct userdata
*u
= userdata
;
1442 unsigned short revents
= 0;
1446 pa_log_debug("Thread starting up");
1448 if (u
->core
->realtime_scheduling
)
1449 pa_make_realtime(u
->core
->realtime_priority
);
1451 pa_thread_mq_install(&u
->thread_mq
);
1455 pa_usec_t rtpoll_sleep
= 0, real_sleep
;
1458 pa_log_debug("Loop");
1461 /* Read some data and pass it to the sources */
1462 if (PA_SOURCE_IS_OPENED(u
->source
->thread_info
.state
)) {
1464 pa_usec_t sleep_usec
= 0;
1465 pa_bool_t on_timeout
= pa_rtpoll_timer_elapsed(u
->rtpoll
);
1468 pa_log_info("Starting capture.");
1469 snd_pcm_start(u
->pcm_handle
);
1471 pa_smoother_resume(u
->smoother
, pa_rtclock_now(), TRUE
);
1477 work_done
= mmap_read(u
, &sleep_usec
, revents
& POLLIN
, on_timeout
);
1479 work_done
= unix_read(u
, &sleep_usec
, revents
& POLLIN
, on_timeout
);
1484 /* pa_log_debug("work_done = %i", work_done); */
1489 if (u
->use_tsched
) {
1492 /* OK, the capture buffer is now empty, let's
1493 * calculate when to wake up next */
1495 /* pa_log_debug("Waking up in %0.2fms (sound card clock).", (double) sleep_usec / PA_USEC_PER_MSEC); */
1497 /* Convert from the sound card time domain to the
1498 * system time domain */
1499 cusec
= pa_smoother_translate(u
->smoother
, pa_rtclock_now(), sleep_usec
);
1501 /* pa_log_debug("Waking up in %0.2fms (system clock).", (double) cusec / PA_USEC_PER_MSEC); */
1503 /* We don't trust the conversion, so we wake up whatever comes first */
1504 rtpoll_sleep
= PA_MIN(sleep_usec
, cusec
);
1508 if (u
->source
->flags
& PA_SOURCE_DEFERRED_VOLUME
) {
1509 pa_usec_t volume_sleep
;
1510 pa_source_volume_change_apply(u
->source
, &volume_sleep
);
1511 if (volume_sleep
> 0) {
1512 if (rtpoll_sleep
> 0)
1513 rtpoll_sleep
= PA_MIN(volume_sleep
, rtpoll_sleep
);
1515 rtpoll_sleep
= volume_sleep
;
1519 if (rtpoll_sleep
> 0) {
1520 pa_rtpoll_set_timer_relative(u
->rtpoll
, rtpoll_sleep
);
1521 real_sleep
= pa_rtclock_now();
1524 pa_rtpoll_set_timer_disabled(u
->rtpoll
);
1526 /* Hmm, nothing to do. Let's sleep */
1527 if ((ret
= pa_rtpoll_run(u
->rtpoll
, TRUE
)) < 0)
1530 if (rtpoll_sleep
> 0) {
1531 real_sleep
= pa_rtclock_now() - real_sleep
;
1533 pa_log_debug("Expected sleep: %0.2fms, real sleep: %0.2fms (diff %0.2f ms)",
1534 (double) rtpoll_sleep
/ PA_USEC_PER_MSEC
, (double) real_sleep
/ PA_USEC_PER_MSEC
,
1535 (double) ((int64_t) real_sleep
- (int64_t) rtpoll_sleep
) / PA_USEC_PER_MSEC
);
1537 if (u
->use_tsched
&& real_sleep
> rtpoll_sleep
+ u
->tsched_watermark
)
1538 pa_log_info("Scheduling delay of %0.2fms, you might want to investigate this to improve latency...",
1539 (double) (real_sleep
- rtpoll_sleep
) / PA_USEC_PER_MSEC
);
1542 if (u
->source
->flags
& PA_SOURCE_DEFERRED_VOLUME
)
1543 pa_source_volume_change_apply(u
->source
, NULL
);
1548 /* Tell ALSA about this and process its response */
1549 if (PA_SOURCE_IS_OPENED(u
->source
->thread_info
.state
)) {
1550 struct pollfd
*pollfd
;
1554 pollfd
= pa_rtpoll_item_get_pollfd(u
->alsa_rtpoll_item
, &n
);
1556 if ((err
= snd_pcm_poll_descriptors_revents(u
->pcm_handle
, pollfd
, n
, &revents
)) < 0) {
1557 pa_log("snd_pcm_poll_descriptors_revents() failed: %s", pa_alsa_strerror(err
));
1561 if (revents
& ~POLLIN
) {
1562 if (pa_alsa_recover_from_poll(u
->pcm_handle
, revents
) < 0)
1567 } else if (revents
&& u
->use_tsched
&& pa_log_ratelimit(PA_LOG_DEBUG
))
1568 pa_log_debug("Wakeup from ALSA!");
1575 /* If this was no regular exit from the loop we have to continue
1576 * processing messages until we received PA_MESSAGE_SHUTDOWN */
1577 pa_asyncmsgq_post(u
->thread_mq
.outq
, PA_MSGOBJECT(u
->core
), PA_CORE_MESSAGE_UNLOAD_MODULE
, u
->module
, 0, NULL
, NULL
);
1578 pa_asyncmsgq_wait_for(u
->thread_mq
.inq
, PA_MESSAGE_SHUTDOWN
);
1581 pa_log_debug("Thread shutting down");
1584 static void set_source_name(pa_source_new_data
*data
, pa_modargs
*ma
, const char *device_id
, const char *device_name
, pa_alsa_mapping
*mapping
) {
1590 pa_assert(device_name
);
1592 if ((n
= pa_modargs_get_value(ma
, "source_name", NULL
))) {
1593 pa_source_new_data_set_name(data
, n
);
1594 data
->namereg_fail
= TRUE
;
1598 if ((n
= pa_modargs_get_value(ma
, "name", NULL
)))
1599 data
->namereg_fail
= TRUE
;
1601 n
= device_id
? device_id
: device_name
;
1602 data
->namereg_fail
= FALSE
;
1606 t
= pa_sprintf_malloc("alsa_input.%s.%s", n
, mapping
->name
);
1608 t
= pa_sprintf_malloc("alsa_input.%s", n
);
1610 pa_source_new_data_set_name(data
, t
);
1614 static void find_mixer(struct userdata
*u
, pa_alsa_mapping
*mapping
, const char *element
, pa_bool_t ignore_dB
) {
1617 if (!mapping
&& !element
)
1620 if (!(u
->mixer_handle
= pa_alsa_open_mixer_for_pcm(u
->pcm_handle
, &u
->control_device
, &hctl
))) {
1621 pa_log_info("Failed to find a working mixer device.");
1627 if (!(u
->mixer_path
= pa_alsa_path_synthesize(element
, PA_ALSA_DIRECTION_INPUT
)))
1630 if (pa_alsa_path_probe(u
->mixer_path
, u
->mixer_handle
, hctl
, ignore_dB
) < 0)
1633 pa_log_debug("Probed mixer path %s:", u
->mixer_path
->name
);
1634 pa_alsa_path_dump(u
->mixer_path
);
1635 } else if (!(u
->mixer_path_set
= mapping
->input_path_set
))
1642 if (u
->mixer_path
) {
1643 pa_alsa_path_free(u
->mixer_path
);
1644 u
->mixer_path
= NULL
;
1647 if (u
->mixer_handle
) {
1648 snd_mixer_close(u
->mixer_handle
);
1649 u
->mixer_handle
= NULL
;
1653 static int setup_mixer(struct userdata
*u
, pa_bool_t ignore_dB
) {
1654 pa_bool_t need_mixer_callback
= FALSE
;
1658 if (!u
->mixer_handle
)
1661 if (u
->source
->active_port
) {
1662 pa_alsa_port_data
*data
;
1664 /* We have a list of supported paths, so let's activate the
1665 * one that has been chosen as active */
1667 data
= PA_DEVICE_PORT_DATA(u
->source
->active_port
);
1668 u
->mixer_path
= data
->path
;
1670 pa_alsa_path_select(data
->path
, data
->setting
, u
->mixer_handle
, u
->source
->muted
);
1674 if (!u
->mixer_path
&& u
->mixer_path_set
)
1675 u
->mixer_path
= pa_hashmap_first(u
->mixer_path_set
->paths
);
1677 if (u
->mixer_path
) {
1678 /* Hmm, we have only a single path, then let's activate it */
1680 pa_alsa_path_select(u
->mixer_path
, u
->mixer_path
->settings
, u
->mixer_handle
, u
->source
->muted
);
1685 mixer_volume_init(u
);
1687 /* Will we need to register callbacks? */
1688 if (u
->mixer_path_set
&& u
->mixer_path_set
->paths
) {
1692 PA_HASHMAP_FOREACH(p
, u
->mixer_path_set
->paths
, state
) {
1693 if (p
->has_volume
|| p
->has_mute
)
1694 need_mixer_callback
= TRUE
;
1697 else if (u
->mixer_path
)
1698 need_mixer_callback
= u
->mixer_path
->has_volume
|| u
->mixer_path
->has_mute
;
1700 if (need_mixer_callback
) {
1701 int (*mixer_callback
)(snd_mixer_elem_t
*, unsigned int);
1702 if (u
->source
->flags
& PA_SOURCE_DEFERRED_VOLUME
) {
1703 u
->mixer_pd
= pa_alsa_mixer_pdata_new();
1704 mixer_callback
= io_mixer_callback
;
1706 if (pa_alsa_set_mixer_rtpoll(u
->mixer_pd
, u
->mixer_handle
, u
->rtpoll
) < 0) {
1707 pa_log("Failed to initialize file descriptor monitoring");
1711 u
->mixer_fdl
= pa_alsa_fdlist_new();
1712 mixer_callback
= ctl_mixer_callback
;
1714 if (pa_alsa_fdlist_set_handle(u
->mixer_fdl
, u
->mixer_handle
, NULL
, u
->core
->mainloop
) < 0) {
1715 pa_log("Failed to initialize file descriptor monitoring");
1720 if (u
->mixer_path_set
)
1721 pa_alsa_path_set_set_callback(u
->mixer_path_set
, u
->mixer_handle
, mixer_callback
, u
);
1723 pa_alsa_path_set_callback(u
->mixer_path
, u
->mixer_handle
, mixer_callback
, u
);
1729 pa_source
*pa_alsa_source_new(pa_module
*m
, pa_modargs
*ma
, const char*driver
, pa_card
*card
, pa_alsa_mapping
*mapping
) {
1731 struct userdata
*u
= NULL
;
1732 const char *dev_id
= NULL
, *key
, *mod_name
;
1734 char *thread_name
= NULL
;
1735 uint32_t alternate_sample_rate
;
1737 uint32_t nfrags
, frag_size
, buffer_size
, tsched_size
, tsched_watermark
;
1738 snd_pcm_uframes_t period_frames
, buffer_frames
, tsched_frames
;
1740 pa_bool_t use_mmap
= TRUE
, b
, use_tsched
= TRUE
, d
, ignore_dB
= FALSE
, namereg_fail
= FALSE
, deferred_volume
= FALSE
, fixed_latency_range
= FALSE
;
1741 pa_source_new_data data
;
1742 pa_alsa_profile_set
*profile_set
= NULL
;
1748 ss
= m
->core
->default_sample_spec
;
1749 map
= m
->core
->default_channel_map
;
1750 if (pa_modargs_get_sample_spec_and_channel_map(ma
, &ss
, &map
, PA_CHANNEL_MAP_ALSA
) < 0) {
1751 pa_log("Failed to parse sample specification and channel map");
1755 alternate_sample_rate
= m
->core
->alternate_sample_rate
;
1756 if (pa_modargs_get_alternate_sample_rate(ma
, &alternate_sample_rate
) < 0) {
1757 pa_log("Failed to parse alternate sample rate");
1761 frame_size
= pa_frame_size(&ss
);
1763 nfrags
= m
->core
->default_n_fragments
;
1764 frag_size
= (uint32_t) pa_usec_to_bytes(m
->core
->default_fragment_size_msec
*PA_USEC_PER_MSEC
, &ss
);
1766 frag_size
= (uint32_t) frame_size
;
1767 tsched_size
= (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_BUFFER_USEC
, &ss
);
1768 tsched_watermark
= (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_WATERMARK_USEC
, &ss
);
1770 if (pa_modargs_get_value_u32(ma
, "fragments", &nfrags
) < 0 ||
1771 pa_modargs_get_value_u32(ma
, "fragment_size", &frag_size
) < 0 ||
1772 pa_modargs_get_value_u32(ma
, "tsched_buffer_size", &tsched_size
) < 0 ||
1773 pa_modargs_get_value_u32(ma
, "tsched_buffer_watermark", &tsched_watermark
) < 0) {
1774 pa_log("Failed to parse buffer metrics");
1778 buffer_size
= nfrags
* frag_size
;
1780 period_frames
= frag_size
/frame_size
;
1781 buffer_frames
= buffer_size
/frame_size
;
1782 tsched_frames
= tsched_size
/frame_size
;
1784 if (pa_modargs_get_value_boolean(ma
, "mmap", &use_mmap
) < 0) {
1785 pa_log("Failed to parse mmap argument.");
1789 if (pa_modargs_get_value_boolean(ma
, "tsched", &use_tsched
) < 0) {
1790 pa_log("Failed to parse tsched argument.");
1794 if (pa_modargs_get_value_boolean(ma
, "ignore_dB", &ignore_dB
) < 0) {
1795 pa_log("Failed to parse ignore_dB argument.");
1799 deferred_volume
= m
->core
->deferred_volume
;
1800 if (pa_modargs_get_value_boolean(ma
, "deferred_volume", &deferred_volume
) < 0) {
1801 pa_log("Failed to parse deferred_volume argument.");
1805 if (pa_modargs_get_value_boolean(ma
, "fixed_latency_range", &fixed_latency_range
) < 0) {
1806 pa_log("Failed to parse fixed_latency_range argument.");
1810 use_tsched
= pa_alsa_may_tsched(use_tsched
);
1812 u
= pa_xnew0(struct userdata
, 1);
1815 u
->use_mmap
= use_mmap
;
1816 u
->use_tsched
= use_tsched
;
1817 u
->deferred_volume
= deferred_volume
;
1818 u
->fixed_latency_range
= fixed_latency_range
;
1820 u
->rtpoll
= pa_rtpoll_new();
1821 pa_thread_mq_init(&u
->thread_mq
, m
->core
->mainloop
, u
->rtpoll
);
1823 u
->smoother
= pa_smoother_new(
1824 SMOOTHER_ADJUST_USEC
,
1825 SMOOTHER_WINDOW_USEC
,
1831 u
->smoother_interval
= SMOOTHER_MIN_INTERVAL
;
1834 if (mapping
&& mapping
->ucm_context
.ucm
)
1835 u
->ucm_context
= &mapping
->ucm_context
;
1837 dev_id
= pa_modargs_get_value(
1839 pa_modargs_get_value(ma
, "device", DEFAULT_DEVICE
));
1841 u
->paths_dir
= pa_xstrdup(pa_modargs_get_value(ma
, "paths_dir", NULL
));
1843 if (reserve_init(u
, dev_id
) < 0)
1846 if (reserve_monitor_init(u
, dev_id
) < 0)
1854 if (!(dev_id
= pa_modargs_get_value(ma
, "device_id", NULL
))) {
1855 pa_log("device_id= not set");
1859 if ((mod_name
= pa_proplist_gets(mapping
->proplist
, PA_ALSA_PROP_UCM_MODIFIER
))) {
1860 if (snd_use_case_set(u
->ucm_context
->ucm
->ucm_mgr
, "_enamod", mod_name
) < 0)
1861 pa_log("Failed to enable ucm modifier %s", mod_name
);
1863 pa_log_debug("Enabled ucm modifier %s", mod_name
);
1866 if (!(u
->pcm_handle
= pa_alsa_open_by_device_id_mapping(
1870 SND_PCM_STREAM_CAPTURE
,
1871 &period_frames
, &buffer_frames
, tsched_frames
,
1875 } else if ((dev_id
= pa_modargs_get_value(ma
, "device_id", NULL
))) {
1877 if (!(profile_set
= pa_alsa_profile_set_new(NULL
, &map
)))
1880 if (!(u
->pcm_handle
= pa_alsa_open_by_device_id_auto(
1884 SND_PCM_STREAM_CAPTURE
,
1885 &period_frames
, &buffer_frames
, tsched_frames
,
1886 &b
, &d
, profile_set
, &mapping
)))
1891 if (!(u
->pcm_handle
= pa_alsa_open_by_device_string(
1892 pa_modargs_get_value(ma
, "device", DEFAULT_DEVICE
),
1895 SND_PCM_STREAM_CAPTURE
,
1896 &period_frames
, &buffer_frames
, tsched_frames
,
1901 pa_assert(u
->device_name
);
1902 pa_log_info("Successfully opened device %s.", u
->device_name
);
1904 if (pa_alsa_pcm_is_modem(u
->pcm_handle
)) {
1905 pa_log_notice("Device %s is modem, refusing further initialization.", u
->device_name
);
1910 pa_log_info("Selected mapping '%s' (%s).", mapping
->description
, mapping
->name
);
1912 if (use_mmap
&& !b
) {
1913 pa_log_info("Device doesn't support mmap(), falling back to UNIX read/write mode.");
1914 u
->use_mmap
= use_mmap
= FALSE
;
1917 if (use_tsched
&& (!b
|| !d
)) {
1918 pa_log_info("Cannot enable timer-based scheduling, falling back to sound IRQ scheduling.");
1919 u
->use_tsched
= use_tsched
= FALSE
;
1923 pa_log_info("Successfully enabled mmap() mode.");
1925 if (u
->use_tsched
) {
1926 pa_log_info("Successfully enabled timer-based scheduling mode.");
1927 if (u
->fixed_latency_range
)
1928 pa_log_info("Disabling latency range changes on overrun");
1931 u
->rates
= pa_alsa_get_supported_rates(u
->pcm_handle
, ss
.rate
);
1933 pa_log_error("Failed to find any supported sample rates.");
1937 /* ALSA might tweak the sample spec, so recalculate the frame size */
1938 frame_size
= pa_frame_size(&ss
);
1940 if (!u
->ucm_context
)
1941 find_mixer(u
, mapping
, pa_modargs_get_value(ma
, "control", NULL
), ignore_dB
);
1943 pa_source_new_data_init(&data
);
1944 data
.driver
= driver
;
1947 set_source_name(&data
, ma
, dev_id
, u
->device_name
, mapping
);
1949 /* We need to give pa_modargs_get_value_boolean() a pointer to a local
1950 * variable instead of using &data.namereg_fail directly, because
1951 * data.namereg_fail is a bitfield and taking the address of a bitfield
1952 * variable is impossible. */
1953 namereg_fail
= data
.namereg_fail
;
1954 if (pa_modargs_get_value_boolean(ma
, "namereg_fail", &namereg_fail
) < 0) {
1955 pa_log("Failed to parse namereg_fail argument.");
1956 pa_source_new_data_done(&data
);
1959 data
.namereg_fail
= namereg_fail
;
1961 pa_source_new_data_set_sample_spec(&data
, &ss
);
1962 pa_source_new_data_set_channel_map(&data
, &map
);
1963 pa_source_new_data_set_alternate_sample_rate(&data
, alternate_sample_rate
);
1965 pa_alsa_init_proplist_pcm(m
->core
, data
.proplist
, u
->pcm_handle
);
1966 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_STRING
, u
->device_name
);
1967 pa_proplist_setf(data
.proplist
, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE
, "%lu", (unsigned long) (buffer_frames
* frame_size
));
1968 pa_proplist_setf(data
.proplist
, PA_PROP_DEVICE_BUFFERING_FRAGMENT_SIZE
, "%lu", (unsigned long) (period_frames
* frame_size
));
1969 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_ACCESS_MODE
, u
->use_tsched
? "mmap+timer" : (u
->use_mmap
? "mmap" : "serial"));
1972 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_PROFILE_NAME
, mapping
->name
);
1973 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_PROFILE_DESCRIPTION
, mapping
->description
);
1975 while ((key
= pa_proplist_iterate(mapping
->proplist
, &state
)))
1976 pa_proplist_sets(data
.proplist
, key
, pa_proplist_gets(mapping
->proplist
, key
));
1979 pa_alsa_init_description(data
.proplist
);
1981 if (u
->control_device
)
1982 pa_alsa_init_proplist_ctl(data
.proplist
, u
->control_device
);
1984 if (pa_modargs_get_proplist(ma
, "source_properties", data
.proplist
, PA_UPDATE_REPLACE
) < 0) {
1985 pa_log("Invalid properties");
1986 pa_source_new_data_done(&data
);
1991 pa_alsa_ucm_add_ports(&data
.ports
, data
.proplist
, u
->ucm_context
, FALSE
, card
);
1992 else if (u
->mixer_path_set
)
1993 pa_alsa_add_ports(&data
, u
->mixer_path_set
, card
);
1995 u
->source
= pa_source_new(m
->core
, &data
, PA_SOURCE_HARDWARE
|PA_SOURCE_LATENCY
|(u
->use_tsched
? PA_SOURCE_DYNAMIC_LATENCY
: 0));
1996 pa_source_new_data_done(&data
);
1999 pa_log("Failed to create source object");
2003 if (pa_modargs_get_value_u32(ma
, "deferred_volume_safety_margin",
2004 &u
->source
->thread_info
.volume_change_safety_margin
) < 0) {
2005 pa_log("Failed to parse deferred_volume_safety_margin parameter");
2009 if (pa_modargs_get_value_s32(ma
, "deferred_volume_extra_delay",
2010 &u
->source
->thread_info
.volume_change_extra_delay
) < 0) {
2011 pa_log("Failed to parse deferred_volume_extra_delay parameter");
2015 u
->source
->parent
.process_msg
= source_process_msg
;
2017 u
->source
->update_requested_latency
= source_update_requested_latency_cb
;
2018 u
->source
->set_state
= source_set_state_cb
;
2020 u
->source
->set_port
= source_set_port_ucm_cb
;
2022 u
->source
->set_port
= source_set_port_cb
;
2023 if (u
->source
->alternate_sample_rate
)
2024 u
->source
->update_rate
= source_update_rate_cb
;
2025 u
->source
->userdata
= u
;
2027 pa_source_set_asyncmsgq(u
->source
, u
->thread_mq
.inq
);
2028 pa_source_set_rtpoll(u
->source
, u
->rtpoll
);
2030 u
->frame_size
= frame_size
;
2031 u
->fragment_size
= frag_size
= (size_t) (period_frames
* frame_size
);
2032 u
->hwbuf_size
= buffer_size
= (size_t) (buffer_frames
* frame_size
);
2033 pa_cvolume_mute(&u
->hardware_volume
, u
->source
->sample_spec
.channels
);
2035 pa_log_info("Using %0.1f fragments of size %lu bytes (%0.2fms), buffer size is %lu bytes (%0.2fms)",
2036 (double) u
->hwbuf_size
/ (double) u
->fragment_size
,
2037 (long unsigned) u
->fragment_size
,
2038 (double) pa_bytes_to_usec(u
->fragment_size
, &ss
) / PA_USEC_PER_MSEC
,
2039 (long unsigned) u
->hwbuf_size
,
2040 (double) pa_bytes_to_usec(u
->hwbuf_size
, &ss
) / PA_USEC_PER_MSEC
);
2042 if (u
->use_tsched
) {
2043 u
->tsched_watermark_ref
= tsched_watermark
;
2044 reset_watermark(u
, u
->tsched_watermark_ref
, &ss
, FALSE
);
2047 pa_source_set_fixed_latency(u
->source
, pa_bytes_to_usec(u
->hwbuf_size
, &ss
));
2051 if (update_sw_params(u
) < 0)
2054 if (u
->ucm_context
) {
2055 if (u
->source
->active_port
&& pa_alsa_ucm_set_port(u
->ucm_context
, u
->source
->active_port
, FALSE
) < 0)
2057 } else if (setup_mixer(u
, ignore_dB
) < 0)
2060 pa_alsa_dump(PA_LOG_DEBUG
, u
->pcm_handle
);
2062 thread_name
= pa_sprintf_malloc("alsa-source-%s", pa_strnull(pa_proplist_gets(u
->source
->proplist
, "alsa.id")));
2063 if (!(u
->thread
= pa_thread_new(thread_name
, thread_func
, u
))) {
2064 pa_log("Failed to create thread.");
2067 pa_xfree(thread_name
);
2070 /* Get initial mixer settings */
2071 if (data
.volume_is_set
) {
2072 if (u
->source
->set_volume
)
2073 u
->source
->set_volume(u
->source
);
2075 if (u
->source
->get_volume
)
2076 u
->source
->get_volume(u
->source
);
2079 if (data
.muted_is_set
) {
2080 if (u
->source
->set_mute
)
2081 u
->source
->set_mute(u
->source
);
2083 if (u
->source
->get_mute
)
2084 u
->source
->get_mute(u
->source
);
2087 if ((data
.volume_is_set
|| data
.muted_is_set
) && u
->source
->write_volume
)
2088 u
->source
->write_volume(u
->source
);
2090 pa_source_put(u
->source
);
2093 pa_alsa_profile_set_free(profile_set
);
2098 pa_xfree(thread_name
);
2104 pa_alsa_profile_set_free(profile_set
);
2109 static void userdata_free(struct userdata
*u
) {
2113 pa_source_unlink(u
->source
);
2116 pa_asyncmsgq_send(u
->thread_mq
.inq
, NULL
, PA_MESSAGE_SHUTDOWN
, NULL
, 0, NULL
);
2117 pa_thread_free(u
->thread
);
2120 pa_thread_mq_done(&u
->thread_mq
);
2123 pa_source_unref(u
->source
);
2126 pa_alsa_mixer_pdata_free(u
->mixer_pd
);
2128 if (u
->alsa_rtpoll_item
)
2129 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
2132 pa_rtpoll_free(u
->rtpoll
);
2134 if (u
->pcm_handle
) {
2135 snd_pcm_drop(u
->pcm_handle
);
2136 snd_pcm_close(u
->pcm_handle
);
2140 pa_alsa_fdlist_free(u
->mixer_fdl
);
2142 if (u
->mixer_path
&& !u
->mixer_path_set
)
2143 pa_alsa_path_free(u
->mixer_path
);
2145 if (u
->mixer_handle
)
2146 snd_mixer_close(u
->mixer_handle
);
2149 pa_smoother_free(u
->smoother
);
2157 pa_xfree(u
->device_name
);
2158 pa_xfree(u
->control_device
);
2159 pa_xfree(u
->paths_dir
);
2163 void pa_alsa_source_free(pa_source
*s
) {
2166 pa_source_assert_ref(s
);
2167 pa_assert_se(u
= s
->userdata
);