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
;
121 pa_usec_t tsched_watermark_usec
;
123 char *device_name
; /* name of the PCM device */
124 char *control_device
; /* name of the control device */
126 pa_bool_t use_mmap
:1, use_tsched
:1, deferred_volume
:1, fixed_latency_range
:1;
130 pa_rtpoll_item
*alsa_rtpoll_item
;
132 pa_smoother
*smoother
;
134 pa_usec_t smoother_interval
;
135 pa_usec_t last_smoother_update
;
137 pa_reserve_wrapper
*reserve
;
138 pa_hook_slot
*reserve_slot
;
139 pa_reserve_monitor_wrapper
*monitor
;
140 pa_hook_slot
*monitor_slot
;
143 pa_alsa_ucm_mapping_context
*ucm_context
;
146 static void userdata_free(struct userdata
*u
);
148 static pa_hook_result_t
reserve_cb(pa_reserve_wrapper
*r
, void *forced
, struct userdata
*u
) {
152 pa_log_debug("Suspending source %s, because another application requested us to release the device.", u
->source
->name
);
154 if (pa_source_suspend(u
->source
, TRUE
, PA_SUSPEND_APPLICATION
) < 0)
155 return PA_HOOK_CANCEL
;
160 static void reserve_done(struct userdata
*u
) {
163 if (u
->reserve_slot
) {
164 pa_hook_slot_free(u
->reserve_slot
);
165 u
->reserve_slot
= NULL
;
169 pa_reserve_wrapper_unref(u
->reserve
);
174 static void reserve_update(struct userdata
*u
) {
175 const char *description
;
178 if (!u
->source
|| !u
->reserve
)
181 if ((description
= pa_proplist_gets(u
->source
->proplist
, PA_PROP_DEVICE_DESCRIPTION
)))
182 pa_reserve_wrapper_set_application_device_name(u
->reserve
, description
);
185 static int reserve_init(struct userdata
*u
, const char *dname
) {
194 if (pa_in_system_mode())
197 if (!(rname
= pa_alsa_get_reserve_name(dname
)))
200 /* We are resuming, try to lock the device */
201 u
->reserve
= pa_reserve_wrapper_get(u
->core
, rname
);
209 pa_assert(!u
->reserve_slot
);
210 u
->reserve_slot
= pa_hook_connect(pa_reserve_wrapper_hook(u
->reserve
), PA_HOOK_NORMAL
, (pa_hook_cb_t
) reserve_cb
, u
);
215 static pa_hook_result_t
monitor_cb(pa_reserve_monitor_wrapper
*w
, void* busy
, struct userdata
*u
) {
219 if (PA_PTR_TO_UINT(busy
) && !u
->reserve
) {
220 pa_log_debug("Suspending source %s, because another application is blocking the access to the device.", u
->source
->name
);
221 pa_source_suspend(u
->source
, true, PA_SUSPEND_APPLICATION
);
223 pa_log_debug("Resuming source %s, because other applications aren't blocking access to the device any more.", u
->source
->name
);
224 pa_source_suspend(u
->source
, false, PA_SUSPEND_APPLICATION
);
230 static void monitor_done(struct userdata
*u
) {
233 if (u
->monitor_slot
) {
234 pa_hook_slot_free(u
->monitor_slot
);
235 u
->monitor_slot
= NULL
;
239 pa_reserve_monitor_wrapper_unref(u
->monitor
);
244 static int reserve_monitor_init(struct userdata
*u
, const char *dname
) {
250 if (pa_in_system_mode())
253 if (!(rname
= pa_alsa_get_reserve_name(dname
)))
256 /* We are resuming, try to lock the device */
257 u
->monitor
= pa_reserve_monitor_wrapper_get(u
->core
, rname
);
263 pa_assert(!u
->monitor_slot
);
264 u
->monitor_slot
= pa_hook_connect(pa_reserve_monitor_wrapper_hook(u
->monitor
), PA_HOOK_NORMAL
, (pa_hook_cb_t
) monitor_cb
, u
);
269 static void fix_min_sleep_wakeup(struct userdata
*u
) {
270 size_t max_use
, max_use_2
;
273 pa_assert(u
->use_tsched
);
275 max_use
= u
->hwbuf_size
- u
->hwbuf_unused
;
276 max_use_2
= pa_frame_align(max_use
/2, &u
->source
->sample_spec
);
278 u
->min_sleep
= pa_usec_to_bytes(TSCHED_MIN_SLEEP_USEC
, &u
->source
->sample_spec
);
279 u
->min_sleep
= PA_CLAMP(u
->min_sleep
, u
->frame_size
, max_use_2
);
281 u
->min_wakeup
= pa_usec_to_bytes(TSCHED_MIN_WAKEUP_USEC
, &u
->source
->sample_spec
);
282 u
->min_wakeup
= PA_CLAMP(u
->min_wakeup
, u
->frame_size
, max_use_2
);
285 static void fix_tsched_watermark(struct userdata
*u
) {
288 pa_assert(u
->use_tsched
);
290 max_use
= u
->hwbuf_size
- u
->hwbuf_unused
;
292 if (u
->tsched_watermark
> max_use
- u
->min_sleep
)
293 u
->tsched_watermark
= max_use
- u
->min_sleep
;
295 if (u
->tsched_watermark
< u
->min_wakeup
)
296 u
->tsched_watermark
= u
->min_wakeup
;
298 u
->tsched_watermark_usec
= pa_bytes_to_usec(u
->tsched_watermark
, &u
->source
->sample_spec
);
301 static void increase_watermark(struct userdata
*u
) {
302 size_t old_watermark
;
303 pa_usec_t old_min_latency
, new_min_latency
;
306 pa_assert(u
->use_tsched
);
308 /* First, just try to increase the watermark */
309 old_watermark
= u
->tsched_watermark
;
310 u
->tsched_watermark
= PA_MIN(u
->tsched_watermark
* 2, u
->tsched_watermark
+ u
->watermark_inc_step
);
311 fix_tsched_watermark(u
);
313 if (old_watermark
!= u
->tsched_watermark
) {
314 pa_log_info("Increasing wakeup watermark to %0.2f ms",
315 (double) u
->tsched_watermark_usec
/ PA_USEC_PER_MSEC
);
319 /* Hmm, we cannot increase the watermark any further, hence let's
320 raise the latency unless doing so was disabled in
322 if (u
->fixed_latency_range
)
325 old_min_latency
= u
->source
->thread_info
.min_latency
;
326 new_min_latency
= PA_MIN(old_min_latency
* 2, old_min_latency
+ TSCHED_WATERMARK_INC_STEP_USEC
);
327 new_min_latency
= PA_MIN(new_min_latency
, u
->source
->thread_info
.max_latency
);
329 if (old_min_latency
!= new_min_latency
) {
330 pa_log_info("Increasing minimal latency to %0.2f ms",
331 (double) new_min_latency
/ PA_USEC_PER_MSEC
);
333 pa_source_set_latency_range_within_thread(u
->source
, new_min_latency
, u
->source
->thread_info
.max_latency
);
336 /* When we reach this we're officialy fucked! */
339 static void decrease_watermark(struct userdata
*u
) {
340 size_t old_watermark
;
344 pa_assert(u
->use_tsched
);
346 now
= pa_rtclock_now();
348 if (u
->watermark_dec_not_before
<= 0)
351 if (u
->watermark_dec_not_before
> now
)
354 old_watermark
= u
->tsched_watermark
;
356 if (u
->tsched_watermark
< u
->watermark_dec_step
)
357 u
->tsched_watermark
= u
->tsched_watermark
/ 2;
359 u
->tsched_watermark
= PA_MAX(u
->tsched_watermark
/ 2, u
->tsched_watermark
- u
->watermark_dec_step
);
361 fix_tsched_watermark(u
);
363 if (old_watermark
!= u
->tsched_watermark
)
364 pa_log_info("Decreasing wakeup watermark to %0.2f ms",
365 (double) u
->tsched_watermark_usec
/ PA_USEC_PER_MSEC
);
367 /* We don't change the latency range*/
370 u
->watermark_dec_not_before
= now
+ TSCHED_WATERMARK_VERIFY_AFTER_USEC
;
373 static void hw_sleep_time(struct userdata
*u
, pa_usec_t
*sleep_usec
, pa_usec_t
*process_usec
) {
376 pa_assert(sleep_usec
);
377 pa_assert(process_usec
);
380 pa_assert(u
->use_tsched
);
382 usec
= pa_source_get_requested_latency_within_thread(u
->source
);
384 if (usec
== (pa_usec_t
) -1)
385 usec
= pa_bytes_to_usec(u
->hwbuf_size
, &u
->source
->sample_spec
);
387 wm
= u
->tsched_watermark_usec
;
392 *sleep_usec
= usec
- wm
;
396 pa_log_debug("Buffer time: %lu ms; Sleep time: %lu ms; Process time: %lu ms",
397 (unsigned long) (usec
/ PA_USEC_PER_MSEC
),
398 (unsigned long) (*sleep_usec
/ PA_USEC_PER_MSEC
),
399 (unsigned long) (*process_usec
/ PA_USEC_PER_MSEC
));
403 static int try_recover(struct userdata
*u
, const char *call
, int err
) {
408 pa_log_debug("%s: %s", call
, pa_alsa_strerror(err
));
410 pa_assert(err
!= -EAGAIN
);
413 pa_log_debug("%s: Buffer overrun!", call
);
415 if (err
== -ESTRPIPE
)
416 pa_log_debug("%s: System suspended!", call
);
418 if ((err
= snd_pcm_recover(u
->pcm_handle
, err
, 1)) < 0) {
419 pa_log("%s: %s", call
, pa_alsa_strerror(err
));
427 static size_t check_left_to_record(struct userdata
*u
, size_t n_bytes
, pa_bool_t on_timeout
) {
428 size_t left_to_record
;
429 size_t rec_space
= u
->hwbuf_size
- u
->hwbuf_unused
;
430 pa_bool_t overrun
= FALSE
;
432 /* We use <= instead of < for this check here because an overrun
433 * only happens after the last sample was processed, not already when
434 * it is removed from the buffer. This is particularly important
435 * when block transfer is used. */
437 if (n_bytes
<= rec_space
)
438 left_to_record
= rec_space
- n_bytes
;
441 /* We got a dropout. What a mess! */
449 if (pa_log_ratelimit(PA_LOG_INFO
))
450 pa_log_info("Overrun!");
454 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
);
458 pa_bool_t reset_not_before
= TRUE
;
460 if (overrun
|| left_to_record
< u
->watermark_inc_threshold
)
461 increase_watermark(u
);
462 else if (left_to_record
> u
->watermark_dec_threshold
) {
463 reset_not_before
= FALSE
;
465 /* We decrease the watermark only if have actually
466 * been woken up by a timeout. If something else woke
467 * us up it's too easy to fulfill the deadlines... */
470 decrease_watermark(u
);
473 if (reset_not_before
)
474 u
->watermark_dec_not_before
= 0;
477 return left_to_record
;
480 static int mmap_read(struct userdata
*u
, pa_usec_t
*sleep_usec
, pa_bool_t polled
, pa_bool_t on_timeout
) {
481 pa_bool_t work_done
= FALSE
;
482 pa_usec_t max_sleep_usec
= 0, process_usec
= 0;
483 size_t left_to_record
;
487 pa_source_assert_ref(u
->source
);
490 hw_sleep_time(u
, &max_sleep_usec
, &process_usec
);
496 pa_bool_t after_avail
= TRUE
;
498 if (PA_UNLIKELY((n
= pa_alsa_safe_avail(u
->pcm_handle
, u
->hwbuf_size
, &u
->source
->sample_spec
)) < 0)) {
500 if ((r
= try_recover(u
, "snd_pcm_avail", (int) n
)) == 0)
506 n_bytes
= (size_t) n
* u
->frame_size
;
509 pa_log_debug("avail: %lu", (unsigned long) n_bytes
);
512 left_to_record
= check_left_to_record(u
, n_bytes
, on_timeout
);
517 pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
) > process_usec
+max_sleep_usec
/2) {
519 pa_log_debug("Not reading, because too early.");
524 if (PA_UNLIKELY(n_bytes
<= 0)) {
528 char *dn
= pa_alsa_get_driver_name_by_pcm(u
->pcm_handle
);
529 pa_log(_("ALSA woke us up to read new data from the device, but there was actually nothing to read!\n"
530 "Most likely this is a bug in the ALSA driver '%s'. Please report this issue to the ALSA developers.\n"
531 "We were woken up with POLLIN set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail."),
537 pa_log_debug("Not reading, because not necessary.");
545 pa_log_debug("Not filling up, because already too many iterations.");
554 pa_log_debug("Reading");
561 const snd_pcm_channel_area_t
*areas
;
562 snd_pcm_uframes_t offset
, frames
;
563 snd_pcm_sframes_t sframes
;
565 frames
= (snd_pcm_uframes_t
) (n_bytes
/ u
->frame_size
);
566 /* pa_log_debug("%lu frames to read", (unsigned long) frames); */
568 if (PA_UNLIKELY((err
= pa_alsa_safe_mmap_begin(u
->pcm_handle
, &areas
, &offset
, &frames
, u
->hwbuf_size
, &u
->source
->sample_spec
)) < 0)) {
570 if (!after_avail
&& err
== -EAGAIN
)
573 if ((r
= try_recover(u
, "snd_pcm_mmap_begin", err
)) == 0)
579 /* Make sure that if these memblocks need to be copied they will fit into one slot */
580 if (frames
> pa_mempool_block_size_max(u
->core
->mempool
)/u
->frame_size
)
581 frames
= pa_mempool_block_size_max(u
->core
->mempool
)/u
->frame_size
;
583 if (!after_avail
&& frames
== 0)
586 pa_assert(frames
> 0);
589 /* Check these are multiples of 8 bit */
590 pa_assert((areas
[0].first
& 7) == 0);
591 pa_assert((areas
[0].step
& 7)== 0);
593 /* We assume a single interleaved memory buffer */
594 pa_assert((areas
[0].first
>> 3) == 0);
595 pa_assert((areas
[0].step
>> 3) == u
->frame_size
);
597 p
= (uint8_t*) areas
[0].addr
+ (offset
* u
->frame_size
);
599 chunk
.memblock
= pa_memblock_new_fixed(u
->core
->mempool
, p
, frames
* u
->frame_size
, TRUE
);
600 chunk
.length
= pa_memblock_get_length(chunk
.memblock
);
603 pa_source_post(u
->source
, &chunk
);
604 pa_memblock_unref_fixed(chunk
.memblock
);
606 if (PA_UNLIKELY((sframes
= snd_pcm_mmap_commit(u
->pcm_handle
, offset
, frames
)) < 0)) {
608 if ((r
= try_recover(u
, "snd_pcm_mmap_commit", (int) sframes
)) == 0)
616 u
->read_count
+= frames
* u
->frame_size
;
619 pa_log_debug("Read %lu bytes (of possible %lu bytes)", (unsigned long) (frames
* u
->frame_size
), (unsigned long) n_bytes
);
622 if ((size_t) frames
* u
->frame_size
>= n_bytes
)
625 n_bytes
-= (size_t) frames
* u
->frame_size
;
630 *sleep_usec
= pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
);
631 process_usec
= u
->tsched_watermark_usec
;
633 if (*sleep_usec
> process_usec
)
634 *sleep_usec
-= process_usec
;
639 return work_done
? 1 : 0;
642 static int unix_read(struct userdata
*u
, pa_usec_t
*sleep_usec
, pa_bool_t polled
, pa_bool_t on_timeout
) {
643 int work_done
= FALSE
;
644 pa_usec_t max_sleep_usec
= 0, process_usec
= 0;
645 size_t left_to_record
;
649 pa_source_assert_ref(u
->source
);
652 hw_sleep_time(u
, &max_sleep_usec
, &process_usec
);
658 pa_bool_t after_avail
= TRUE
;
660 if (PA_UNLIKELY((n
= pa_alsa_safe_avail(u
->pcm_handle
, u
->hwbuf_size
, &u
->source
->sample_spec
)) < 0)) {
662 if ((r
= try_recover(u
, "snd_pcm_avail", (int) n
)) == 0)
668 n_bytes
= (size_t) n
* u
->frame_size
;
669 left_to_record
= check_left_to_record(u
, n_bytes
, on_timeout
);
674 pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
) > process_usec
+max_sleep_usec
/2)
677 if (PA_UNLIKELY(n_bytes
<= 0)) {
681 char *dn
= pa_alsa_get_driver_name_by_pcm(u
->pcm_handle
);
682 pa_log(_("ALSA woke us up to read new data from the device, but there was actually nothing to read!\n"
683 "Most likely this is a bug in the ALSA driver '%s'. Please report this issue to the ALSA developers.\n"
684 "We were woken up with POLLIN set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail."),
694 pa_log_debug("Not filling up, because already too many iterations.");
704 snd_pcm_sframes_t frames
;
707 chunk
.memblock
= pa_memblock_new(u
->core
->mempool
, (size_t) -1);
709 frames
= (snd_pcm_sframes_t
) (pa_memblock_get_length(chunk
.memblock
) / u
->frame_size
);
711 if (frames
> (snd_pcm_sframes_t
) (n_bytes
/u
->frame_size
))
712 frames
= (snd_pcm_sframes_t
) (n_bytes
/u
->frame_size
);
714 /* pa_log_debug("%lu frames to read", (unsigned long) n); */
716 p
= pa_memblock_acquire(chunk
.memblock
);
717 frames
= snd_pcm_readi(u
->pcm_handle
, (uint8_t*) p
, (snd_pcm_uframes_t
) frames
);
718 pa_memblock_release(chunk
.memblock
);
720 if (PA_UNLIKELY(frames
< 0)) {
721 pa_memblock_unref(chunk
.memblock
);
723 if (!after_avail
&& (int) frames
== -EAGAIN
)
726 if ((r
= try_recover(u
, "snd_pcm_readi", (int) frames
)) == 0)
732 if (!after_avail
&& frames
== 0) {
733 pa_memblock_unref(chunk
.memblock
);
737 pa_assert(frames
> 0);
741 chunk
.length
= (size_t) frames
* u
->frame_size
;
743 pa_source_post(u
->source
, &chunk
);
744 pa_memblock_unref(chunk
.memblock
);
748 u
->read_count
+= frames
* u
->frame_size
;
750 /* pa_log_debug("read %lu frames", (unsigned long) frames); */
752 if ((size_t) frames
* u
->frame_size
>= n_bytes
)
755 n_bytes
-= (size_t) frames
* u
->frame_size
;
760 *sleep_usec
= pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
);
761 process_usec
= u
->tsched_watermark_usec
;
763 if (*sleep_usec
> process_usec
)
764 *sleep_usec
-= process_usec
;
769 return work_done
? 1 : 0;
772 static void update_smoother(struct userdata
*u
) {
773 snd_pcm_sframes_t delay
= 0;
776 pa_usec_t now1
= 0, now2
;
777 snd_pcm_status_t
*status
;
778 snd_htimestamp_t htstamp
= { 0, 0 };
780 snd_pcm_status_alloca(&status
);
783 pa_assert(u
->pcm_handle
);
785 /* Let's update the time smoother */
787 if (PA_UNLIKELY((err
= pa_alsa_safe_delay(u
->pcm_handle
, status
, &delay
, u
->hwbuf_size
, &u
->source
->sample_spec
, TRUE
)) < 0)) {
788 pa_log_warn("Failed to get delay: %s", pa_alsa_strerror(err
));
792 snd_pcm_status_get_htstamp(status
, &htstamp
);
793 now1
= pa_timespec_load(&htstamp
);
795 /* Hmm, if the timestamp is 0, then it wasn't set and we take the current time */
797 now1
= pa_rtclock_now();
799 /* check if the time since the last update is bigger than the interval */
800 if (u
->last_smoother_update
> 0)
801 if (u
->last_smoother_update
+ u
->smoother_interval
> now1
)
804 position
= u
->read_count
+ ((uint64_t) delay
* (uint64_t) u
->frame_size
);
805 now2
= pa_bytes_to_usec(position
, &u
->source
->sample_spec
);
807 pa_smoother_put(u
->smoother
, now1
, now2
);
809 u
->last_smoother_update
= now1
;
810 /* exponentially increase the update interval up to the MAX limit */
811 u
->smoother_interval
= PA_MIN (u
->smoother_interval
* 2, SMOOTHER_MAX_INTERVAL
);
814 static pa_usec_t
source_get_latency(struct userdata
*u
) {
816 pa_usec_t now1
, now2
;
820 now1
= pa_rtclock_now();
821 now2
= pa_smoother_get(u
->smoother
, now1
);
823 delay
= (int64_t) now2
- (int64_t) pa_bytes_to_usec(u
->read_count
, &u
->source
->sample_spec
);
825 return delay
>= 0 ? (pa_usec_t
) delay
: 0;
828 static int build_pollfd(struct userdata
*u
) {
830 pa_assert(u
->pcm_handle
);
832 if (u
->alsa_rtpoll_item
)
833 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
835 if (!(u
->alsa_rtpoll_item
= pa_alsa_build_pollfd(u
->pcm_handle
, u
->rtpoll
)))
841 /* Called from IO context */
842 static int suspend(struct userdata
*u
) {
844 pa_assert(u
->pcm_handle
);
846 pa_smoother_pause(u
->smoother
, pa_rtclock_now());
849 snd_pcm_close(u
->pcm_handle
);
850 u
->pcm_handle
= NULL
;
852 if (u
->alsa_rtpoll_item
) {
853 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
854 u
->alsa_rtpoll_item
= NULL
;
857 pa_log_info("Device suspended...");
862 /* Called from IO context */
863 static int update_sw_params(struct userdata
*u
) {
864 snd_pcm_uframes_t avail_min
;
869 /* Use the full buffer if no one asked us for anything specific */
875 if ((latency
= pa_source_get_requested_latency_within_thread(u
->source
)) != (pa_usec_t
) -1) {
878 pa_log_debug("latency set to %0.2fms", (double) latency
/ PA_USEC_PER_MSEC
);
880 b
= pa_usec_to_bytes(latency
, &u
->source
->sample_spec
);
882 /* We need at least one sample in our buffer */
884 if (PA_UNLIKELY(b
< u
->frame_size
))
887 u
->hwbuf_unused
= PA_LIKELY(b
< u
->hwbuf_size
) ? (u
->hwbuf_size
- b
) : 0;
890 fix_min_sleep_wakeup(u
);
891 fix_tsched_watermark(u
);
894 pa_log_debug("hwbuf_unused=%lu", (unsigned long) u
->hwbuf_unused
);
899 pa_usec_t sleep_usec
, process_usec
;
901 hw_sleep_time(u
, &sleep_usec
, &process_usec
);
902 avail_min
+= pa_usec_to_bytes(sleep_usec
, &u
->source
->sample_spec
) / u
->frame_size
;
905 pa_log_debug("setting avail_min=%lu", (unsigned long) avail_min
);
907 if ((err
= pa_alsa_set_sw_params(u
->pcm_handle
, avail_min
, !u
->use_tsched
)) < 0) {
908 pa_log("Failed to set software parameters: %s", pa_alsa_strerror(err
));
915 /* Called from IO Context on unsuspend or from main thread when creating source */
916 static void reset_watermark(struct userdata
*u
, size_t tsched_watermark
, pa_sample_spec
*ss
,
917 pa_bool_t in_thread
) {
918 u
->tsched_watermark
= pa_usec_to_bytes_round_up(pa_bytes_to_usec_round_up(tsched_watermark
, ss
),
919 &u
->source
->sample_spec
);
921 u
->watermark_inc_step
= pa_usec_to_bytes(TSCHED_WATERMARK_INC_STEP_USEC
, &u
->source
->sample_spec
);
922 u
->watermark_dec_step
= pa_usec_to_bytes(TSCHED_WATERMARK_DEC_STEP_USEC
, &u
->source
->sample_spec
);
924 u
->watermark_inc_threshold
= pa_usec_to_bytes_round_up(TSCHED_WATERMARK_INC_THRESHOLD_USEC
, &u
->source
->sample_spec
);
925 u
->watermark_dec_threshold
= pa_usec_to_bytes_round_up(TSCHED_WATERMARK_DEC_THRESHOLD_USEC
, &u
->source
->sample_spec
);
927 fix_min_sleep_wakeup(u
);
928 fix_tsched_watermark(u
);
931 pa_source_set_latency_range_within_thread(u
->source
,
933 pa_bytes_to_usec(u
->hwbuf_size
, ss
));
935 pa_source_set_latency_range(u
->source
,
937 pa_bytes_to_usec(u
->hwbuf_size
, ss
));
939 /* work-around assert in pa_source_set_latency_within_thead,
940 keep track of min_latency and reuse it when
941 this routine is called from IO context */
942 u
->min_latency_ref
= u
->source
->thread_info
.min_latency
;
945 pa_log_info("Time scheduling watermark is %0.2fms",
946 (double) u
->tsched_watermark_usec
/ PA_USEC_PER_MSEC
);
949 /* Called from IO context */
950 static int unsuspend(struct userdata
*u
) {
954 snd_pcm_uframes_t period_size
, buffer_size
;
957 pa_assert(!u
->pcm_handle
);
959 pa_log_info("Trying resume...");
961 if ((err
= snd_pcm_open(&u
->pcm_handle
, u
->device_name
, SND_PCM_STREAM_CAPTURE
,
963 SND_PCM_NO_AUTO_RESAMPLE
|
964 SND_PCM_NO_AUTO_CHANNELS
|
965 SND_PCM_NO_AUTO_FORMAT
)) < 0) {
966 pa_log("Error opening PCM device %s: %s", u
->device_name
, pa_alsa_strerror(err
));
970 ss
= u
->source
->sample_spec
;
971 period_size
= u
->fragment_size
/ u
->frame_size
;
972 buffer_size
= u
->hwbuf_size
/ u
->frame_size
;
976 if ((err
= pa_alsa_set_hw_params(u
->pcm_handle
, &ss
, &period_size
, &buffer_size
, 0, &b
, &d
, TRUE
)) < 0) {
977 pa_log("Failed to set hardware parameters: %s", pa_alsa_strerror(err
));
981 if (b
!= u
->use_mmap
|| d
!= u
->use_tsched
) {
982 pa_log_warn("Resume failed, couldn't get original access mode.");
986 if (!pa_sample_spec_equal(&ss
, &u
->source
->sample_spec
)) {
987 pa_log_warn("Resume failed, couldn't restore original sample settings.");
991 if (period_size
*u
->frame_size
!= u
->fragment_size
||
992 buffer_size
*u
->frame_size
!= u
->hwbuf_size
) {
993 pa_log_warn("Resume failed, couldn't restore original fragment settings. (Old: %lu/%lu, New %lu/%lu)",
994 (unsigned long) u
->hwbuf_size
, (unsigned long) u
->fragment_size
,
995 (unsigned long) (buffer_size
*u
->frame_size
), (unsigned long) (period_size
*u
->frame_size
));
999 if (update_sw_params(u
) < 0)
1002 if (build_pollfd(u
) < 0)
1005 /* FIXME: We need to reload the volume somehow */
1008 pa_smoother_reset(u
->smoother
, pa_rtclock_now(), TRUE
);
1009 u
->smoother_interval
= SMOOTHER_MIN_INTERVAL
;
1010 u
->last_smoother_update
= 0;
1014 /* reset the watermark to the value defined when source was created */
1016 reset_watermark(u
, u
->tsched_watermark_ref
, &u
->source
->sample_spec
, TRUE
);
1018 pa_log_info("Resumed successfully...");
1023 if (u
->pcm_handle
) {
1024 snd_pcm_close(u
->pcm_handle
);
1025 u
->pcm_handle
= NULL
;
1031 /* Called from IO context */
1032 static int source_process_msg(pa_msgobject
*o
, int code
, void *data
, int64_t offset
, pa_memchunk
*chunk
) {
1033 struct userdata
*u
= PA_SOURCE(o
)->userdata
;
1037 case PA_SOURCE_MESSAGE_GET_LATENCY
: {
1041 r
= source_get_latency(u
);
1043 *((pa_usec_t
*) data
) = r
;
1048 case PA_SOURCE_MESSAGE_SET_STATE
:
1050 switch ((pa_source_state_t
) PA_PTR_TO_UINT(data
)) {
1052 case PA_SOURCE_SUSPENDED
: {
1055 pa_assert(PA_SOURCE_IS_OPENED(u
->source
->thread_info
.state
));
1057 if ((r
= suspend(u
)) < 0)
1063 case PA_SOURCE_IDLE
:
1064 case PA_SOURCE_RUNNING
: {
1067 if (u
->source
->thread_info
.state
== PA_SOURCE_INIT
) {
1068 if (build_pollfd(u
) < 0)
1072 if (u
->source
->thread_info
.state
== PA_SOURCE_SUSPENDED
) {
1073 if ((r
= unsuspend(u
)) < 0)
1080 case PA_SOURCE_UNLINKED
:
1081 case PA_SOURCE_INIT
:
1082 case PA_SOURCE_INVALID_STATE
:
1089 return pa_source_process_msg(o
, code
, data
, offset
, chunk
);
1092 /* Called from main context */
1093 static int source_set_state_cb(pa_source
*s
, pa_source_state_t new_state
) {
1094 pa_source_state_t old_state
;
1097 pa_source_assert_ref(s
);
1098 pa_assert_se(u
= s
->userdata
);
1100 old_state
= pa_source_get_state(u
->source
);
1102 if (PA_SOURCE_IS_OPENED(old_state
) && new_state
== PA_SOURCE_SUSPENDED
)
1104 else if (old_state
== PA_SOURCE_SUSPENDED
&& PA_SOURCE_IS_OPENED(new_state
))
1105 if (reserve_init(u
, u
->device_name
) < 0)
1106 return -PA_ERR_BUSY
;
1111 static int ctl_mixer_callback(snd_mixer_elem_t
*elem
, unsigned int mask
) {
1112 struct userdata
*u
= snd_mixer_elem_get_callback_private(elem
);
1115 pa_assert(u
->mixer_handle
);
1117 if (mask
== SND_CTL_EVENT_MASK_REMOVE
)
1120 if (!PA_SOURCE_IS_LINKED(u
->source
->state
))
1123 if (u
->source
->suspend_cause
& PA_SUSPEND_SESSION
) {
1124 pa_source_set_mixer_dirty(u
->source
, TRUE
);
1128 if (mask
& SND_CTL_EVENT_MASK_VALUE
) {
1129 pa_source_get_volume(u
->source
, TRUE
);
1130 pa_source_get_mute(u
->source
, TRUE
);
1136 static int io_mixer_callback(snd_mixer_elem_t
*elem
, unsigned int mask
) {
1137 struct userdata
*u
= snd_mixer_elem_get_callback_private(elem
);
1140 pa_assert(u
->mixer_handle
);
1142 if (mask
== SND_CTL_EVENT_MASK_REMOVE
)
1145 if (u
->source
->suspend_cause
& PA_SUSPEND_SESSION
) {
1146 pa_source_set_mixer_dirty(u
->source
, TRUE
);
1150 if (mask
& SND_CTL_EVENT_MASK_VALUE
)
1151 pa_source_update_volume_and_mute(u
->source
);
1156 static void source_get_volume_cb(pa_source
*s
) {
1157 struct userdata
*u
= s
->userdata
;
1159 char vol_str_pcnt
[PA_CVOLUME_SNPRINT_MAX
];
1162 pa_assert(u
->mixer_path
);
1163 pa_assert(u
->mixer_handle
);
1165 if (pa_alsa_path_get_volume(u
->mixer_path
, u
->mixer_handle
, &s
->channel_map
, &r
) < 0)
1168 /* Shift down by the base volume, so that 0dB becomes maximum volume */
1169 pa_sw_cvolume_multiply_scalar(&r
, &r
, s
->base_volume
);
1171 pa_log_debug("Read hardware volume: %s", pa_cvolume_snprint(vol_str_pcnt
, sizeof(vol_str_pcnt
), &r
));
1173 if (u
->mixer_path
->has_dB
) {
1174 char vol_str_db
[PA_SW_CVOLUME_SNPRINT_DB_MAX
];
1176 pa_log_debug(" in dB: %s", pa_sw_cvolume_snprint_dB(vol_str_db
, sizeof(vol_str_db
), &r
));
1179 if (pa_cvolume_equal(&u
->hardware_volume
, &r
))
1182 s
->real_volume
= u
->hardware_volume
= r
;
1184 /* Hmm, so the hardware volume changed, let's reset our software volume */
1185 if (u
->mixer_path
->has_dB
)
1186 pa_source_set_soft_volume(s
, NULL
);
1189 static void source_set_volume_cb(pa_source
*s
) {
1190 struct userdata
*u
= s
->userdata
;
1192 char vol_str_pcnt
[PA_CVOLUME_SNPRINT_MAX
];
1193 pa_bool_t deferred_volume
= !!(s
->flags
& PA_SOURCE_DEFERRED_VOLUME
);
1196 pa_assert(u
->mixer_path
);
1197 pa_assert(u
->mixer_handle
);
1199 /* Shift up by the base volume */
1200 pa_sw_cvolume_divide_scalar(&r
, &s
->real_volume
, s
->base_volume
);
1202 if (pa_alsa_path_set_volume(u
->mixer_path
, u
->mixer_handle
, &s
->channel_map
, &r
, deferred_volume
, !deferred_volume
) < 0)
1205 /* Shift down by the base volume, so that 0dB becomes maximum volume */
1206 pa_sw_cvolume_multiply_scalar(&r
, &r
, s
->base_volume
);
1208 u
->hardware_volume
= r
;
1210 if (u
->mixer_path
->has_dB
) {
1211 pa_cvolume new_soft_volume
;
1212 pa_bool_t accurate_enough
;
1213 char vol_str_db
[PA_SW_CVOLUME_SNPRINT_DB_MAX
];
1215 /* Match exactly what the user requested by software */
1216 pa_sw_cvolume_divide(&new_soft_volume
, &s
->real_volume
, &u
->hardware_volume
);
1218 /* If the adjustment to do in software is only minimal we
1219 * can skip it. That saves us CPU at the expense of a bit of
1222 (pa_cvolume_min(&new_soft_volume
) >= (PA_VOLUME_NORM
- VOLUME_ACCURACY
)) &&
1223 (pa_cvolume_max(&new_soft_volume
) <= (PA_VOLUME_NORM
+ VOLUME_ACCURACY
));
1225 pa_log_debug("Requested volume: %s", pa_cvolume_snprint(vol_str_pcnt
, sizeof(vol_str_pcnt
), &s
->real_volume
));
1226 pa_log_debug(" in dB: %s", pa_sw_cvolume_snprint_dB(vol_str_db
, sizeof(vol_str_db
), &s
->real_volume
));
1227 pa_log_debug("Got hardware volume: %s", pa_cvolume_snprint(vol_str_pcnt
, sizeof(vol_str_pcnt
), &u
->hardware_volume
));
1228 pa_log_debug(" in dB: %s", pa_sw_cvolume_snprint_dB(vol_str_db
, sizeof(vol_str_db
), &u
->hardware_volume
));
1229 pa_log_debug("Calculated software volume: %s (accurate-enough=%s)",
1230 pa_cvolume_snprint(vol_str_pcnt
, sizeof(vol_str_pcnt
), &new_soft_volume
),
1231 pa_yes_no(accurate_enough
));
1232 pa_log_debug(" in dB: %s", pa_sw_cvolume_snprint_dB(vol_str_db
, sizeof(vol_str_db
), &new_soft_volume
));
1234 if (!accurate_enough
)
1235 s
->soft_volume
= new_soft_volume
;
1238 pa_log_debug("Wrote hardware volume: %s", pa_cvolume_snprint(vol_str_pcnt
, sizeof(vol_str_pcnt
), &r
));
1240 /* We can't match exactly what the user requested, hence let's
1241 * at least tell the user about it */
1247 static void source_write_volume_cb(pa_source
*s
) {
1248 struct userdata
*u
= s
->userdata
;
1249 pa_cvolume hw_vol
= s
->thread_info
.current_hw_volume
;
1252 pa_assert(u
->mixer_path
);
1253 pa_assert(u
->mixer_handle
);
1254 pa_assert(s
->flags
& PA_SOURCE_DEFERRED_VOLUME
);
1256 /* Shift up by the base volume */
1257 pa_sw_cvolume_divide_scalar(&hw_vol
, &hw_vol
, s
->base_volume
);
1259 if (pa_alsa_path_set_volume(u
->mixer_path
, u
->mixer_handle
, &s
->channel_map
, &hw_vol
, TRUE
, TRUE
) < 0)
1260 pa_log_error("Writing HW volume failed");
1263 pa_bool_t accurate_enough
;
1265 /* Shift down by the base volume, so that 0dB becomes maximum volume */
1266 pa_sw_cvolume_multiply_scalar(&hw_vol
, &hw_vol
, s
->base_volume
);
1268 pa_sw_cvolume_divide(&tmp_vol
, &hw_vol
, &s
->thread_info
.current_hw_volume
);
1270 (pa_cvolume_min(&tmp_vol
) >= (PA_VOLUME_NORM
- VOLUME_ACCURACY
)) &&
1271 (pa_cvolume_max(&tmp_vol
) <= (PA_VOLUME_NORM
+ VOLUME_ACCURACY
));
1273 if (!accurate_enough
) {
1275 char db
[2][PA_SW_CVOLUME_SNPRINT_DB_MAX
];
1276 char pcnt
[2][PA_CVOLUME_SNPRINT_MAX
];
1279 pa_log_debug("Written HW volume did not match with the request: %s (request) != %s",
1280 pa_cvolume_snprint(vol
.pcnt
[0], sizeof(vol
.pcnt
[0]), &s
->thread_info
.current_hw_volume
),
1281 pa_cvolume_snprint(vol
.pcnt
[1], sizeof(vol
.pcnt
[1]), &hw_vol
));
1282 pa_log_debug(" in dB: %s (request) != %s",
1283 pa_sw_cvolume_snprint_dB(vol
.db
[0], sizeof(vol
.db
[0]), &s
->thread_info
.current_hw_volume
),
1284 pa_sw_cvolume_snprint_dB(vol
.db
[1], sizeof(vol
.db
[1]), &hw_vol
));
1289 static void source_get_mute_cb(pa_source
*s
) {
1290 struct userdata
*u
= s
->userdata
;
1294 pa_assert(u
->mixer_path
);
1295 pa_assert(u
->mixer_handle
);
1297 if (pa_alsa_path_get_mute(u
->mixer_path
, u
->mixer_handle
, &b
) < 0)
1303 static void source_set_mute_cb(pa_source
*s
) {
1304 struct userdata
*u
= s
->userdata
;
1307 pa_assert(u
->mixer_path
);
1308 pa_assert(u
->mixer_handle
);
1310 pa_alsa_path_set_mute(u
->mixer_path
, u
->mixer_handle
, s
->muted
);
1313 static void mixer_volume_init(struct userdata
*u
) {
1316 if (!u
->mixer_path
->has_volume
) {
1317 pa_source_set_write_volume_callback(u
->source
, NULL
);
1318 pa_source_set_get_volume_callback(u
->source
, NULL
);
1319 pa_source_set_set_volume_callback(u
->source
, NULL
);
1321 pa_log_info("Driver does not support hardware volume control, falling back to software volume control.");
1323 pa_source_set_get_volume_callback(u
->source
, source_get_volume_cb
);
1324 pa_source_set_set_volume_callback(u
->source
, source_set_volume_cb
);
1326 if (u
->mixer_path
->has_dB
&& u
->deferred_volume
) {
1327 pa_source_set_write_volume_callback(u
->source
, source_write_volume_cb
);
1328 pa_log_info("Successfully enabled deferred volume.");
1330 pa_source_set_write_volume_callback(u
->source
, NULL
);
1332 if (u
->mixer_path
->has_dB
) {
1333 pa_source_enable_decibel_volume(u
->source
, TRUE
);
1334 pa_log_info("Hardware volume ranges from %0.2f dB to %0.2f dB.", u
->mixer_path
->min_dB
, u
->mixer_path
->max_dB
);
1336 u
->source
->base_volume
= pa_sw_volume_from_dB(-u
->mixer_path
->max_dB
);
1337 u
->source
->n_volume_steps
= PA_VOLUME_NORM
+1;
1339 pa_log_info("Fixing base volume to %0.2f dB", pa_sw_volume_to_dB(u
->source
->base_volume
));
1341 pa_source_enable_decibel_volume(u
->source
, FALSE
);
1342 pa_log_info("Hardware volume ranges from %li to %li.", u
->mixer_path
->min_volume
, u
->mixer_path
->max_volume
);
1344 u
->source
->base_volume
= PA_VOLUME_NORM
;
1345 u
->source
->n_volume_steps
= u
->mixer_path
->max_volume
- u
->mixer_path
->min_volume
+ 1;
1348 pa_log_info("Using hardware volume control. Hardware dB scale %s.", u
->mixer_path
->has_dB
? "supported" : "not supported");
1351 if (!u
->mixer_path
->has_mute
) {
1352 pa_source_set_get_mute_callback(u
->source
, NULL
);
1353 pa_source_set_set_mute_callback(u
->source
, NULL
);
1354 pa_log_info("Driver does not support hardware mute control, falling back to software mute control.");
1356 pa_source_set_get_mute_callback(u
->source
, source_get_mute_cb
);
1357 pa_source_set_set_mute_callback(u
->source
, source_set_mute_cb
);
1358 pa_log_info("Using hardware mute control.");
1362 static int source_set_port_ucm_cb(pa_source
*s
, pa_device_port
*p
) {
1363 struct userdata
*u
= s
->userdata
;
1367 pa_assert(u
->ucm_context
);
1369 return pa_alsa_ucm_set_port(u
->ucm_context
, p
, FALSE
);
1372 static int source_set_port_cb(pa_source
*s
, pa_device_port
*p
) {
1373 struct userdata
*u
= s
->userdata
;
1374 pa_alsa_port_data
*data
;
1378 pa_assert(u
->mixer_handle
);
1380 data
= PA_DEVICE_PORT_DATA(p
);
1382 pa_assert_se(u
->mixer_path
= data
->path
);
1383 pa_alsa_path_select(u
->mixer_path
, data
->setting
, u
->mixer_handle
, s
->muted
);
1385 mixer_volume_init(u
);
1389 if (s
->flags
& PA_SOURCE_DEFERRED_VOLUME
) {
1390 if (s
->write_volume
)
1400 static void source_update_requested_latency_cb(pa_source
*s
) {
1401 struct userdata
*u
= s
->userdata
;
1403 pa_assert(u
->use_tsched
); /* only when timer scheduling is used
1404 * we can dynamically adjust the
1410 update_sw_params(u
);
1413 static pa_bool_t
source_update_rate_cb(pa_source
*s
, uint32_t rate
) {
1414 struct userdata
*u
= s
->userdata
;
1416 pa_bool_t supported
= FALSE
;
1420 for (i
= 0; u
->rates
[i
]; i
++) {
1421 if (u
->rates
[i
] == rate
) {
1428 pa_log_info("Source does not support sample rate of %d Hz", rate
);
1432 if (!PA_SOURCE_IS_OPENED(s
->state
)) {
1433 pa_log_info("Updating rate for device %s, new rate is %d", u
->device_name
, rate
);
1434 u
->source
->sample_spec
.rate
= rate
;
1441 static void thread_func(void *userdata
) {
1442 struct userdata
*u
= userdata
;
1443 unsigned short revents
= 0;
1447 pa_log_debug("Thread starting up");
1449 if (u
->core
->realtime_scheduling
)
1450 pa_make_realtime(u
->core
->realtime_priority
);
1452 pa_thread_mq_install(&u
->thread_mq
);
1456 pa_usec_t rtpoll_sleep
= 0, real_sleep
;
1459 pa_log_debug("Loop");
1462 /* Read some data and pass it to the sources */
1463 if (PA_SOURCE_IS_OPENED(u
->source
->thread_info
.state
)) {
1465 pa_usec_t sleep_usec
= 0;
1466 pa_bool_t on_timeout
= pa_rtpoll_timer_elapsed(u
->rtpoll
);
1469 pa_log_info("Starting capture.");
1470 snd_pcm_start(u
->pcm_handle
);
1472 pa_smoother_resume(u
->smoother
, pa_rtclock_now(), TRUE
);
1478 work_done
= mmap_read(u
, &sleep_usec
, revents
& POLLIN
, on_timeout
);
1480 work_done
= unix_read(u
, &sleep_usec
, revents
& POLLIN
, on_timeout
);
1485 /* pa_log_debug("work_done = %i", work_done); */
1490 if (u
->use_tsched
) {
1493 /* OK, the capture buffer is now empty, let's
1494 * calculate when to wake up next */
1496 /* pa_log_debug("Waking up in %0.2fms (sound card clock).", (double) sleep_usec / PA_USEC_PER_MSEC); */
1498 /* Convert from the sound card time domain to the
1499 * system time domain */
1500 cusec
= pa_smoother_translate(u
->smoother
, pa_rtclock_now(), sleep_usec
);
1502 /* pa_log_debug("Waking up in %0.2fms (system clock).", (double) cusec / PA_USEC_PER_MSEC); */
1504 /* We don't trust the conversion, so we wake up whatever comes first */
1505 rtpoll_sleep
= PA_MIN(sleep_usec
, cusec
);
1509 if (u
->source
->flags
& PA_SOURCE_DEFERRED_VOLUME
) {
1510 pa_usec_t volume_sleep
;
1511 pa_source_volume_change_apply(u
->source
, &volume_sleep
);
1512 if (volume_sleep
> 0) {
1513 if (rtpoll_sleep
> 0)
1514 rtpoll_sleep
= PA_MIN(volume_sleep
, rtpoll_sleep
);
1516 rtpoll_sleep
= volume_sleep
;
1520 if (rtpoll_sleep
> 0) {
1521 pa_rtpoll_set_timer_relative(u
->rtpoll
, rtpoll_sleep
);
1522 real_sleep
= pa_rtclock_now();
1525 pa_rtpoll_set_timer_disabled(u
->rtpoll
);
1527 /* Hmm, nothing to do. Let's sleep */
1528 if ((ret
= pa_rtpoll_run(u
->rtpoll
, TRUE
)) < 0)
1531 if (rtpoll_sleep
> 0) {
1532 real_sleep
= pa_rtclock_now() - real_sleep
;
1534 pa_log_debug("Expected sleep: %0.2fms, real sleep: %0.2fms (diff %0.2f ms)",
1535 (double) rtpoll_sleep
/ PA_USEC_PER_MSEC
, (double) real_sleep
/ PA_USEC_PER_MSEC
,
1536 (double) ((int64_t) real_sleep
- (int64_t) rtpoll_sleep
) / PA_USEC_PER_MSEC
);
1538 if (u
->use_tsched
&& real_sleep
> rtpoll_sleep
+ u
->tsched_watermark_usec
)
1539 pa_log_info("Scheduling delay of %0.2f ms > %0.2f ms, you might want to investigate this to improve latency...",
1540 (double) (real_sleep
- rtpoll_sleep
) / PA_USEC_PER_MSEC
,
1541 (double) (u
->tsched_watermark_usec
) / PA_USEC_PER_MSEC
);
1544 if (u
->source
->flags
& PA_SOURCE_DEFERRED_VOLUME
)
1545 pa_source_volume_change_apply(u
->source
, NULL
);
1550 /* Tell ALSA about this and process its response */
1551 if (PA_SOURCE_IS_OPENED(u
->source
->thread_info
.state
)) {
1552 struct pollfd
*pollfd
;
1556 pollfd
= pa_rtpoll_item_get_pollfd(u
->alsa_rtpoll_item
, &n
);
1558 if ((err
= snd_pcm_poll_descriptors_revents(u
->pcm_handle
, pollfd
, n
, &revents
)) < 0) {
1559 pa_log("snd_pcm_poll_descriptors_revents() failed: %s", pa_alsa_strerror(err
));
1563 if (revents
& ~POLLIN
) {
1564 if (pa_alsa_recover_from_poll(u
->pcm_handle
, revents
) < 0)
1569 } else if (revents
&& u
->use_tsched
&& pa_log_ratelimit(PA_LOG_DEBUG
))
1570 pa_log_debug("Wakeup from ALSA!");
1577 /* If this was no regular exit from the loop we have to continue
1578 * processing messages until we received PA_MESSAGE_SHUTDOWN */
1579 pa_asyncmsgq_post(u
->thread_mq
.outq
, PA_MSGOBJECT(u
->core
), PA_CORE_MESSAGE_UNLOAD_MODULE
, u
->module
, 0, NULL
, NULL
);
1580 pa_asyncmsgq_wait_for(u
->thread_mq
.inq
, PA_MESSAGE_SHUTDOWN
);
1583 pa_log_debug("Thread shutting down");
1586 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
) {
1592 pa_assert(device_name
);
1594 if ((n
= pa_modargs_get_value(ma
, "source_name", NULL
))) {
1595 pa_source_new_data_set_name(data
, n
);
1596 data
->namereg_fail
= TRUE
;
1600 if ((n
= pa_modargs_get_value(ma
, "name", NULL
)))
1601 data
->namereg_fail
= TRUE
;
1603 n
= device_id
? device_id
: device_name
;
1604 data
->namereg_fail
= FALSE
;
1608 t
= pa_sprintf_malloc("alsa_input.%s.%s", n
, mapping
->name
);
1610 t
= pa_sprintf_malloc("alsa_input.%s", n
);
1612 pa_source_new_data_set_name(data
, t
);
1616 static void find_mixer(struct userdata
*u
, pa_alsa_mapping
*mapping
, const char *element
, pa_bool_t ignore_dB
) {
1619 if (!mapping
&& !element
)
1622 if (!(u
->mixer_handle
= pa_alsa_open_mixer_for_pcm(u
->pcm_handle
, &u
->control_device
, &hctl
))) {
1623 pa_log_info("Failed to find a working mixer device.");
1629 if (!(u
->mixer_path
= pa_alsa_path_synthesize(element
, PA_ALSA_DIRECTION_INPUT
)))
1632 if (pa_alsa_path_probe(u
->mixer_path
, u
->mixer_handle
, hctl
, ignore_dB
) < 0)
1635 pa_log_debug("Probed mixer path %s:", u
->mixer_path
->name
);
1636 pa_alsa_path_dump(u
->mixer_path
);
1637 } else if (!(u
->mixer_path_set
= mapping
->input_path_set
))
1644 if (u
->mixer_path
) {
1645 pa_alsa_path_free(u
->mixer_path
);
1646 u
->mixer_path
= NULL
;
1649 if (u
->mixer_handle
) {
1650 snd_mixer_close(u
->mixer_handle
);
1651 u
->mixer_handle
= NULL
;
1655 static int setup_mixer(struct userdata
*u
, pa_bool_t ignore_dB
) {
1656 pa_bool_t need_mixer_callback
= FALSE
;
1660 if (!u
->mixer_handle
)
1663 if (u
->source
->active_port
) {
1664 pa_alsa_port_data
*data
;
1666 /* We have a list of supported paths, so let's activate the
1667 * one that has been chosen as active */
1669 data
= PA_DEVICE_PORT_DATA(u
->source
->active_port
);
1670 u
->mixer_path
= data
->path
;
1672 pa_alsa_path_select(data
->path
, data
->setting
, u
->mixer_handle
, u
->source
->muted
);
1676 if (!u
->mixer_path
&& u
->mixer_path_set
)
1677 u
->mixer_path
= pa_hashmap_first(u
->mixer_path_set
->paths
);
1679 if (u
->mixer_path
) {
1680 /* Hmm, we have only a single path, then let's activate it */
1682 pa_alsa_path_select(u
->mixer_path
, u
->mixer_path
->settings
, u
->mixer_handle
, u
->source
->muted
);
1687 mixer_volume_init(u
);
1689 /* Will we need to register callbacks? */
1690 if (u
->mixer_path_set
&& u
->mixer_path_set
->paths
) {
1694 PA_HASHMAP_FOREACH(p
, u
->mixer_path_set
->paths
, state
) {
1695 if (p
->has_volume
|| p
->has_mute
)
1696 need_mixer_callback
= TRUE
;
1699 else if (u
->mixer_path
)
1700 need_mixer_callback
= u
->mixer_path
->has_volume
|| u
->mixer_path
->has_mute
;
1702 if (need_mixer_callback
) {
1703 int (*mixer_callback
)(snd_mixer_elem_t
*, unsigned int);
1704 if (u
->source
->flags
& PA_SOURCE_DEFERRED_VOLUME
) {
1705 u
->mixer_pd
= pa_alsa_mixer_pdata_new();
1706 mixer_callback
= io_mixer_callback
;
1708 if (pa_alsa_set_mixer_rtpoll(u
->mixer_pd
, u
->mixer_handle
, u
->rtpoll
) < 0) {
1709 pa_log("Failed to initialize file descriptor monitoring");
1713 u
->mixer_fdl
= pa_alsa_fdlist_new();
1714 mixer_callback
= ctl_mixer_callback
;
1716 if (pa_alsa_fdlist_set_handle(u
->mixer_fdl
, u
->mixer_handle
, NULL
, u
->core
->mainloop
) < 0) {
1717 pa_log("Failed to initialize file descriptor monitoring");
1722 if (u
->mixer_path_set
)
1723 pa_alsa_path_set_set_callback(u
->mixer_path_set
, u
->mixer_handle
, mixer_callback
, u
);
1725 pa_alsa_path_set_callback(u
->mixer_path
, u
->mixer_handle
, mixer_callback
, u
);
1731 pa_source
*pa_alsa_source_new(pa_module
*m
, pa_modargs
*ma
, const char*driver
, pa_card
*card
, pa_alsa_mapping
*mapping
) {
1733 struct userdata
*u
= NULL
;
1734 const char *dev_id
= NULL
, *key
, *mod_name
;
1736 char *thread_name
= NULL
;
1737 uint32_t alternate_sample_rate
;
1739 uint32_t nfrags
, frag_size
, buffer_size
, tsched_size
, tsched_watermark
;
1740 snd_pcm_uframes_t period_frames
, buffer_frames
, tsched_frames
;
1742 pa_bool_t use_mmap
= TRUE
, b
, use_tsched
= TRUE
, d
, ignore_dB
= FALSE
, namereg_fail
= FALSE
, deferred_volume
= FALSE
, fixed_latency_range
= FALSE
;
1743 pa_source_new_data data
;
1744 pa_alsa_profile_set
*profile_set
= NULL
;
1750 ss
= m
->core
->default_sample_spec
;
1751 map
= m
->core
->default_channel_map
;
1752 if (pa_modargs_get_sample_spec_and_channel_map(ma
, &ss
, &map
, PA_CHANNEL_MAP_ALSA
) < 0) {
1753 pa_log("Failed to parse sample specification and channel map");
1757 alternate_sample_rate
= m
->core
->alternate_sample_rate
;
1758 if (pa_modargs_get_alternate_sample_rate(ma
, &alternate_sample_rate
) < 0) {
1759 pa_log("Failed to parse alternate sample rate");
1763 frame_size
= pa_frame_size(&ss
);
1765 nfrags
= m
->core
->default_n_fragments
;
1766 frag_size
= (uint32_t) pa_usec_to_bytes(m
->core
->default_fragment_size_msec
*PA_USEC_PER_MSEC
, &ss
);
1768 frag_size
= (uint32_t) frame_size
;
1769 tsched_size
= (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_BUFFER_USEC
, &ss
);
1770 tsched_watermark
= (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_WATERMARK_USEC
, &ss
);
1772 if (pa_modargs_get_value_u32(ma
, "fragments", &nfrags
) < 0 ||
1773 pa_modargs_get_value_u32(ma
, "fragment_size", &frag_size
) < 0 ||
1774 pa_modargs_get_value_u32(ma
, "tsched_buffer_size", &tsched_size
) < 0 ||
1775 pa_modargs_get_value_u32(ma
, "tsched_buffer_watermark", &tsched_watermark
) < 0) {
1776 pa_log("Failed to parse buffer metrics");
1780 buffer_size
= nfrags
* frag_size
;
1782 period_frames
= frag_size
/frame_size
;
1783 buffer_frames
= buffer_size
/frame_size
;
1784 tsched_frames
= tsched_size
/frame_size
;
1786 if (pa_modargs_get_value_boolean(ma
, "mmap", &use_mmap
) < 0) {
1787 pa_log("Failed to parse mmap argument.");
1791 if (pa_modargs_get_value_boolean(ma
, "tsched", &use_tsched
) < 0) {
1792 pa_log("Failed to parse tsched argument.");
1796 if (pa_modargs_get_value_boolean(ma
, "ignore_dB", &ignore_dB
) < 0) {
1797 pa_log("Failed to parse ignore_dB argument.");
1801 deferred_volume
= m
->core
->deferred_volume
;
1802 if (pa_modargs_get_value_boolean(ma
, "deferred_volume", &deferred_volume
) < 0) {
1803 pa_log("Failed to parse deferred_volume argument.");
1807 if (pa_modargs_get_value_boolean(ma
, "fixed_latency_range", &fixed_latency_range
) < 0) {
1808 pa_log("Failed to parse fixed_latency_range argument.");
1812 use_tsched
= pa_alsa_may_tsched(use_tsched
);
1814 u
= pa_xnew0(struct userdata
, 1);
1817 u
->use_mmap
= use_mmap
;
1818 u
->use_tsched
= use_tsched
;
1819 u
->deferred_volume
= deferred_volume
;
1820 u
->fixed_latency_range
= fixed_latency_range
;
1822 u
->rtpoll
= pa_rtpoll_new();
1823 pa_thread_mq_init(&u
->thread_mq
, m
->core
->mainloop
, u
->rtpoll
);
1825 u
->smoother
= pa_smoother_new(
1826 SMOOTHER_ADJUST_USEC
,
1827 SMOOTHER_WINDOW_USEC
,
1833 u
->smoother_interval
= SMOOTHER_MIN_INTERVAL
;
1836 if (mapping
&& mapping
->ucm_context
.ucm
)
1837 u
->ucm_context
= &mapping
->ucm_context
;
1839 dev_id
= pa_modargs_get_value(
1841 pa_modargs_get_value(ma
, "device", DEFAULT_DEVICE
));
1843 u
->paths_dir
= pa_xstrdup(pa_modargs_get_value(ma
, "paths_dir", NULL
));
1845 if (reserve_init(u
, dev_id
) < 0)
1848 if (reserve_monitor_init(u
, dev_id
) < 0)
1856 if (!(dev_id
= pa_modargs_get_value(ma
, "device_id", NULL
))) {
1857 pa_log("device_id= not set");
1861 if ((mod_name
= pa_proplist_gets(mapping
->proplist
, PA_ALSA_PROP_UCM_MODIFIER
))) {
1862 if (snd_use_case_set(u
->ucm_context
->ucm
->ucm_mgr
, "_enamod", mod_name
) < 0)
1863 pa_log("Failed to enable ucm modifier %s", mod_name
);
1865 pa_log_debug("Enabled ucm modifier %s", mod_name
);
1868 if (!(u
->pcm_handle
= pa_alsa_open_by_device_id_mapping(
1872 SND_PCM_STREAM_CAPTURE
,
1873 &period_frames
, &buffer_frames
, tsched_frames
,
1877 } else if ((dev_id
= pa_modargs_get_value(ma
, "device_id", NULL
))) {
1879 if (!(profile_set
= pa_alsa_profile_set_new(NULL
, &map
)))
1882 if (!(u
->pcm_handle
= pa_alsa_open_by_device_id_auto(
1886 SND_PCM_STREAM_CAPTURE
,
1887 &period_frames
, &buffer_frames
, tsched_frames
,
1888 &b
, &d
, profile_set
, &mapping
)))
1893 if (!(u
->pcm_handle
= pa_alsa_open_by_device_string(
1894 pa_modargs_get_value(ma
, "device", DEFAULT_DEVICE
),
1897 SND_PCM_STREAM_CAPTURE
,
1898 &period_frames
, &buffer_frames
, tsched_frames
,
1903 pa_assert(u
->device_name
);
1904 pa_log_info("Successfully opened device %s.", u
->device_name
);
1906 if (pa_alsa_pcm_is_modem(u
->pcm_handle
)) {
1907 pa_log_notice("Device %s is modem, refusing further initialization.", u
->device_name
);
1912 pa_log_info("Selected mapping '%s' (%s).", mapping
->description
, mapping
->name
);
1914 if (use_mmap
&& !b
) {
1915 pa_log_info("Device doesn't support mmap(), falling back to UNIX read/write mode.");
1916 u
->use_mmap
= use_mmap
= FALSE
;
1919 if (use_tsched
&& (!b
|| !d
)) {
1920 pa_log_info("Cannot enable timer-based scheduling, falling back to sound IRQ scheduling.");
1921 u
->use_tsched
= use_tsched
= FALSE
;
1925 pa_log_info("Successfully enabled mmap() mode.");
1927 if (u
->use_tsched
) {
1928 pa_log_info("Successfully enabled timer-based scheduling mode.");
1929 if (u
->fixed_latency_range
)
1930 pa_log_info("Disabling latency range changes on overrun");
1933 u
->rates
= pa_alsa_get_supported_rates(u
->pcm_handle
, ss
.rate
);
1935 pa_log_error("Failed to find any supported sample rates.");
1939 /* ALSA might tweak the sample spec, so recalculate the frame size */
1940 frame_size
= pa_frame_size(&ss
);
1942 if (!u
->ucm_context
)
1943 find_mixer(u
, mapping
, pa_modargs_get_value(ma
, "control", NULL
), ignore_dB
);
1945 pa_source_new_data_init(&data
);
1946 data
.driver
= driver
;
1949 set_source_name(&data
, ma
, dev_id
, u
->device_name
, mapping
);
1951 /* We need to give pa_modargs_get_value_boolean() a pointer to a local
1952 * variable instead of using &data.namereg_fail directly, because
1953 * data.namereg_fail is a bitfield and taking the address of a bitfield
1954 * variable is impossible. */
1955 namereg_fail
= data
.namereg_fail
;
1956 if (pa_modargs_get_value_boolean(ma
, "namereg_fail", &namereg_fail
) < 0) {
1957 pa_log("Failed to parse namereg_fail argument.");
1958 pa_source_new_data_done(&data
);
1961 data
.namereg_fail
= namereg_fail
;
1963 pa_source_new_data_set_sample_spec(&data
, &ss
);
1964 pa_source_new_data_set_channel_map(&data
, &map
);
1965 pa_source_new_data_set_alternate_sample_rate(&data
, alternate_sample_rate
);
1967 pa_alsa_init_proplist_pcm(m
->core
, data
.proplist
, u
->pcm_handle
);
1968 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_STRING
, u
->device_name
);
1969 pa_proplist_setf(data
.proplist
, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE
, "%lu", (unsigned long) (buffer_frames
* frame_size
));
1970 pa_proplist_setf(data
.proplist
, PA_PROP_DEVICE_BUFFERING_FRAGMENT_SIZE
, "%lu", (unsigned long) (period_frames
* frame_size
));
1971 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_ACCESS_MODE
, u
->use_tsched
? "mmap+timer" : (u
->use_mmap
? "mmap" : "serial"));
1974 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_PROFILE_NAME
, mapping
->name
);
1975 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_PROFILE_DESCRIPTION
, mapping
->description
);
1977 while ((key
= pa_proplist_iterate(mapping
->proplist
, &state
)))
1978 pa_proplist_sets(data
.proplist
, key
, pa_proplist_gets(mapping
->proplist
, key
));
1981 pa_alsa_init_description(data
.proplist
);
1983 if (u
->control_device
)
1984 pa_alsa_init_proplist_ctl(data
.proplist
, u
->control_device
);
1986 if (pa_modargs_get_proplist(ma
, "source_properties", data
.proplist
, PA_UPDATE_REPLACE
) < 0) {
1987 pa_log("Invalid properties");
1988 pa_source_new_data_done(&data
);
1993 pa_alsa_ucm_add_ports(&data
.ports
, data
.proplist
, u
->ucm_context
, FALSE
, card
);
1994 else if (u
->mixer_path_set
)
1995 pa_alsa_add_ports(&data
, u
->mixer_path_set
, card
);
1997 u
->source
= pa_source_new(m
->core
, &data
, PA_SOURCE_HARDWARE
|PA_SOURCE_LATENCY
|(u
->use_tsched
? PA_SOURCE_DYNAMIC_LATENCY
: 0));
1998 pa_source_new_data_done(&data
);
2001 pa_log("Failed to create source object");
2005 if (pa_modargs_get_value_u32(ma
, "deferred_volume_safety_margin",
2006 &u
->source
->thread_info
.volume_change_safety_margin
) < 0) {
2007 pa_log("Failed to parse deferred_volume_safety_margin parameter");
2011 if (pa_modargs_get_value_s32(ma
, "deferred_volume_extra_delay",
2012 &u
->source
->thread_info
.volume_change_extra_delay
) < 0) {
2013 pa_log("Failed to parse deferred_volume_extra_delay parameter");
2017 u
->source
->parent
.process_msg
= source_process_msg
;
2019 u
->source
->update_requested_latency
= source_update_requested_latency_cb
;
2020 u
->source
->set_state
= source_set_state_cb
;
2022 u
->source
->set_port
= source_set_port_ucm_cb
;
2024 u
->source
->set_port
= source_set_port_cb
;
2025 if (u
->source
->alternate_sample_rate
)
2026 u
->source
->update_rate
= source_update_rate_cb
;
2027 u
->source
->userdata
= u
;
2029 pa_source_set_asyncmsgq(u
->source
, u
->thread_mq
.inq
);
2030 pa_source_set_rtpoll(u
->source
, u
->rtpoll
);
2032 u
->frame_size
= frame_size
;
2033 u
->fragment_size
= frag_size
= (size_t) (period_frames
* frame_size
);
2034 u
->hwbuf_size
= buffer_size
= (size_t) (buffer_frames
* frame_size
);
2035 pa_cvolume_mute(&u
->hardware_volume
, u
->source
->sample_spec
.channels
);
2037 pa_log_info("Using %0.1f fragments of size %lu bytes (%0.2fms), buffer size is %lu bytes (%0.2fms)",
2038 (double) u
->hwbuf_size
/ (double) u
->fragment_size
,
2039 (long unsigned) u
->fragment_size
,
2040 (double) pa_bytes_to_usec(u
->fragment_size
, &ss
) / PA_USEC_PER_MSEC
,
2041 (long unsigned) u
->hwbuf_size
,
2042 (double) pa_bytes_to_usec(u
->hwbuf_size
, &ss
) / PA_USEC_PER_MSEC
);
2044 if (u
->use_tsched
) {
2045 u
->tsched_watermark_ref
= tsched_watermark
;
2046 reset_watermark(u
, u
->tsched_watermark_ref
, &ss
, FALSE
);
2049 pa_source_set_fixed_latency(u
->source
, pa_bytes_to_usec(u
->hwbuf_size
, &ss
));
2053 if (update_sw_params(u
) < 0)
2056 if (u
->ucm_context
) {
2057 if (u
->source
->active_port
&& pa_alsa_ucm_set_port(u
->ucm_context
, u
->source
->active_port
, FALSE
) < 0)
2059 } else if (setup_mixer(u
, ignore_dB
) < 0)
2062 pa_alsa_dump(PA_LOG_DEBUG
, u
->pcm_handle
);
2064 thread_name
= pa_sprintf_malloc("alsa-source-%s", pa_strnull(pa_proplist_gets(u
->source
->proplist
, "alsa.id")));
2065 if (!(u
->thread
= pa_thread_new(thread_name
, thread_func
, u
))) {
2066 pa_log("Failed to create thread.");
2069 pa_xfree(thread_name
);
2072 /* Get initial mixer settings */
2073 if (data
.volume_is_set
) {
2074 if (u
->source
->set_volume
)
2075 u
->source
->set_volume(u
->source
);
2077 if (u
->source
->get_volume
)
2078 u
->source
->get_volume(u
->source
);
2081 if (data
.muted_is_set
) {
2082 if (u
->source
->set_mute
)
2083 u
->source
->set_mute(u
->source
);
2085 if (u
->source
->get_mute
)
2086 u
->source
->get_mute(u
->source
);
2089 if ((data
.volume_is_set
|| data
.muted_is_set
) && u
->source
->write_volume
)
2090 u
->source
->write_volume(u
->source
);
2092 pa_source_put(u
->source
);
2095 pa_alsa_profile_set_free(profile_set
);
2100 pa_xfree(thread_name
);
2106 pa_alsa_profile_set_free(profile_set
);
2111 static void userdata_free(struct userdata
*u
) {
2115 pa_source_unlink(u
->source
);
2118 pa_asyncmsgq_send(u
->thread_mq
.inq
, NULL
, PA_MESSAGE_SHUTDOWN
, NULL
, 0, NULL
);
2119 pa_thread_free(u
->thread
);
2122 pa_thread_mq_done(&u
->thread_mq
);
2125 pa_source_unref(u
->source
);
2128 pa_alsa_mixer_pdata_free(u
->mixer_pd
);
2130 if (u
->alsa_rtpoll_item
)
2131 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
2134 pa_rtpoll_free(u
->rtpoll
);
2136 if (u
->pcm_handle
) {
2137 snd_pcm_drop(u
->pcm_handle
);
2138 snd_pcm_close(u
->pcm_handle
);
2142 pa_alsa_fdlist_free(u
->mixer_fdl
);
2144 if (u
->mixer_path
&& !u
->mixer_path_set
)
2145 pa_alsa_path_free(u
->mixer_path
);
2147 if (u
->mixer_handle
)
2148 snd_mixer_close(u
->mixer_handle
);
2151 pa_smoother_free(u
->smoother
);
2159 pa_xfree(u
->device_name
);
2160 pa_xfree(u
->control_device
);
2161 pa_xfree(u
->paths_dir
);
2165 void pa_alsa_source_free(pa_source
*s
) {
2168 pa_source_assert_ref(s
);
2169 pa_assert_se(u
= s
->userdata
);