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 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
29 #include <asoundlib.h>
31 #ifdef HAVE_VALGRIND_MEMCHECK_H
32 #include <valgrind/memcheck.h>
35 #include <pulse/xmalloc.h>
36 #include <pulse/util.h>
37 #include <pulse/timeval.h>
38 #include <pulse/i18n.h>
40 #include <pulsecore/core-error.h>
41 #include <pulsecore/core.h>
42 #include <pulsecore/module.h>
43 #include <pulsecore/memchunk.h>
44 #include <pulsecore/sink.h>
45 #include <pulsecore/modargs.h>
46 #include <pulsecore/core-util.h>
47 #include <pulsecore/sample-util.h>
48 #include <pulsecore/log.h>
49 #include <pulsecore/macro.h>
50 #include <pulsecore/thread.h>
51 #include <pulsecore/core-error.h>
52 #include <pulsecore/thread-mq.h>
53 #include <pulsecore/rtpoll.h>
54 #include <pulsecore/time-smoother.h>
55 #include <pulsecore/rtclock.h>
57 #include "alsa-util.h"
58 #include "alsa-source.h"
60 /* #define DEBUG_TIMING */
62 #define DEFAULT_DEVICE "default"
63 #define DEFAULT_TSCHED_BUFFER_USEC (2*PA_USEC_PER_SEC) /* 2s */
64 #define DEFAULT_TSCHED_WATERMARK_USEC (20*PA_USEC_PER_MSEC) /* 20ms */
65 #define TSCHED_MIN_SLEEP_USEC (10*PA_USEC_PER_MSEC) /* 10ms */
66 #define TSCHED_MIN_WAKEUP_USEC (4*PA_USEC_PER_MSEC) /* 4ms */
74 pa_thread_mq thread_mq
;
77 snd_pcm_t
*pcm_handle
;
79 pa_alsa_fdlist
*mixer_fdl
;
80 snd_mixer_t
*mixer_handle
;
81 snd_mixer_elem_t
*mixer_elem
;
82 long hw_volume_max
, hw_volume_min
;
83 long hw_dB_max
, hw_dB_min
;
84 pa_bool_t hw_dB_supported
:1;
85 pa_bool_t mixer_seperate_channels
:1;
87 pa_cvolume hardware_volume
;
89 size_t frame_size
, fragment_size
, hwbuf_size
, tsched_watermark
, hwbuf_unused
, min_sleep
, min_wakeup
;
94 pa_bool_t use_mmap
:1, use_tsched
:1;
96 pa_rtpoll_item
*alsa_rtpoll_item
;
98 snd_mixer_selem_channel_id_t mixer_map
[SND_MIXER_SCHN_LAST
];
100 pa_smoother
*smoother
;
104 static void userdata_free(struct userdata
*u
);
106 static void fix_min_sleep_wakeup(struct userdata
*u
) {
107 size_t max_use
, max_use_2
;
110 max_use
= u
->hwbuf_size
- u
->hwbuf_unused
;
111 max_use_2
= pa_frame_align(max_use
/2, &u
->source
->sample_spec
);
113 u
->min_sleep
= pa_usec_to_bytes(TSCHED_MIN_SLEEP_USEC
, &u
->source
->sample_spec
);
114 u
->min_sleep
= PA_CLAMP(u
->min_sleep
, u
->frame_size
, max_use_2
);
116 u
->min_wakeup
= pa_usec_to_bytes(TSCHED_MIN_WAKEUP_USEC
, &u
->source
->sample_spec
);
117 u
->min_wakeup
= PA_CLAMP(u
->min_wakeup
, u
->frame_size
, max_use_2
);
120 static void fix_tsched_watermark(struct userdata
*u
) {
124 max_use
= u
->hwbuf_size
- u
->hwbuf_unused
;
126 if (u
->tsched_watermark
> max_use
- u
->min_sleep
)
127 u
->tsched_watermark
= max_use
- u
->min_sleep
;
129 if (u
->tsched_watermark
< u
->min_wakeup
)
130 u
->tsched_watermark
= u
->min_wakeup
;
133 static void adjust_after_overrun(struct userdata
*u
) {
134 size_t old_watermark
;
135 pa_usec_t old_min_latency
, new_min_latency
;
139 /* First, just try to increase the watermark */
140 old_watermark
= u
->tsched_watermark
;
141 u
->tsched_watermark
*= 2;
142 fix_tsched_watermark(u
);
144 if (old_watermark
!= u
->tsched_watermark
) {
145 pa_log_notice("Increasing wakeup watermark to %0.2f ms",
146 (double) pa_bytes_to_usec(u
->tsched_watermark
, &u
->source
->sample_spec
) / PA_USEC_PER_MSEC
);
150 /* Hmm, we cannot increase the watermark any further, hence let's raise the latency */
151 old_min_latency
= u
->source
->thread_info
.min_latency
;
152 new_min_latency
= PA_MIN(old_min_latency
* 2, u
->source
->thread_info
.max_latency
);
154 if (old_min_latency
!= new_min_latency
) {
155 pa_log_notice("Increasing minimal latency to %0.2f ms",
156 (double) new_min_latency
/ PA_USEC_PER_MSEC
);
158 pa_source_update_latency_range(u
->source
, new_min_latency
, u
->source
->thread_info
.max_latency
);
162 /* When we reach this we're officialy fucked! */
165 static pa_usec_t
hw_sleep_time(struct userdata
*u
, pa_usec_t
*sleep_usec
, pa_usec_t
*process_usec
) {
170 usec
= pa_source_get_requested_latency_within_thread(u
->source
);
172 if (usec
== (pa_usec_t
) -1)
173 usec
= pa_bytes_to_usec(u
->hwbuf_size
, &u
->source
->sample_spec
);
175 wm
= pa_bytes_to_usec(u
->tsched_watermark
, &u
->source
->sample_spec
);
180 *sleep_usec
= usec
- wm
;
184 pa_log_debug("Buffer time: %lu ms; Sleep time: %lu ms; Process time: %lu ms",
185 (unsigned long) (usec
/ PA_USEC_PER_MSEC
),
186 (unsigned long) (*sleep_usec
/ PA_USEC_PER_MSEC
),
187 (unsigned long) (*process_usec
/ PA_USEC_PER_MSEC
));
193 static int try_recover(struct userdata
*u
, const char *call
, int err
) {
198 pa_log_debug("%s: %s", call
, snd_strerror(err
));
200 pa_assert(err
!= -EAGAIN
);
203 pa_log_debug("%s: Buffer overrun!", call
);
205 if ((err
= snd_pcm_recover(u
->pcm_handle
, err
, 1)) < 0) {
206 pa_log("%s: %s", call
, snd_strerror(err
));
210 snd_pcm_start(u
->pcm_handle
);
214 static size_t check_left_to_record(struct userdata
*u
, size_t n_bytes
) {
215 size_t left_to_record
;
216 size_t rec_space
= u
->hwbuf_size
- u
->hwbuf_unused
;
218 /* We use <= instead of < for this check here because an overrun
219 * only happens after the last sample was processed, not already when
220 * it is removed from the buffer. This is particularly important
221 * when block transfer is used. */
223 if (n_bytes
<= rec_space
) {
224 left_to_record
= rec_space
- n_bytes
;
227 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
);
237 if (pa_log_ratelimit())
238 pa_log_info("Overrun!");
241 adjust_after_overrun(u
);
244 return left_to_record
;
247 static int mmap_read(struct userdata
*u
, pa_usec_t
*sleep_usec
, pa_bool_t polled
) {
248 pa_bool_t work_done
= FALSE
;
249 pa_usec_t max_sleep_usec
= 0, process_usec
= 0;
250 size_t left_to_record
;
253 pa_source_assert_ref(u
->source
);
256 hw_sleep_time(u
, &max_sleep_usec
, &process_usec
);
263 if (PA_UNLIKELY((n
= pa_alsa_safe_avail(u
->pcm_handle
, u
->hwbuf_size
, &u
->source
->sample_spec
)) < 0)) {
265 if ((r
= try_recover(u
, "snd_pcm_avail", (int) n
)) == 0)
271 n_bytes
= (size_t) n
* u
->frame_size
;
274 pa_log_debug("avail: %lu", (unsigned long) n_bytes
);
277 left_to_record
= check_left_to_record(u
, n_bytes
);
281 pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
) > process_usec
+max_sleep_usec
/2) {
283 pa_log_debug("Not reading, because too early.");
288 if (PA_UNLIKELY(n_bytes
<= 0)) {
290 if (polled
&& pa_log_ratelimit())
291 pa_log(_("ALSA woke us up to read new data from the device, but there was actually nothing to read! "
292 "Most likely this is an ALSA driver bug. Please report this issue to the ALSA developers. "
293 "We were woken up with POLLIN set -- however a subsequent snd_pcm_avail_update() returned 0."));
296 pa_log_debug("Not reading, because not necessary.");
304 pa_log_debug("Reading");
309 const snd_pcm_channel_area_t
*areas
;
310 snd_pcm_uframes_t offset
, frames
;
313 snd_pcm_sframes_t sframes
;
315 frames
= (snd_pcm_uframes_t
) (n_bytes
/ u
->frame_size
);
317 /* pa_log_debug("%lu frames to read", (unsigned long) frames); */
319 if (PA_UNLIKELY((err
= pa_alsa_safe_mmap_begin(u
->pcm_handle
, &areas
, &offset
, &frames
, u
->hwbuf_size
, &u
->source
->sample_spec
)) < 0)) {
321 if ((r
= try_recover(u
, "snd_pcm_mmap_begin", err
)) == 0)
327 /* Make sure that if these memblocks need to be copied they will fit into one slot */
328 if (frames
> pa_mempool_block_size_max(u
->source
->core
->mempool
)/u
->frame_size
)
329 frames
= pa_mempool_block_size_max(u
->source
->core
->mempool
)/u
->frame_size
;
331 /* Check these are multiples of 8 bit */
332 pa_assert((areas
[0].first
& 7) == 0);
333 pa_assert((areas
[0].step
& 7)== 0);
335 /* We assume a single interleaved memory buffer */
336 pa_assert((areas
[0].first
>> 3) == 0);
337 pa_assert((areas
[0].step
>> 3) == u
->frame_size
);
339 p
= (uint8_t*) areas
[0].addr
+ (offset
* u
->frame_size
);
341 chunk
.memblock
= pa_memblock_new_fixed(u
->core
->mempool
, p
, frames
* u
->frame_size
, TRUE
);
342 chunk
.length
= pa_memblock_get_length(chunk
.memblock
);
345 pa_source_post(u
->source
, &chunk
);
346 pa_memblock_unref_fixed(chunk
.memblock
);
348 if (PA_UNLIKELY((sframes
= snd_pcm_mmap_commit(u
->pcm_handle
, offset
, frames
)) < 0)) {
350 if ((r
= try_recover(u
, "snd_pcm_mmap_commit", (int) sframes
)) == 0)
358 u
->read_count
+= frames
* u
->frame_size
;
361 pa_log_debug("Read %lu bytes", (unsigned long) (frames
* u
->frame_size
));
364 if ((size_t) frames
* u
->frame_size
>= n_bytes
)
367 n_bytes
-= (size_t) frames
* u
->frame_size
;
371 *sleep_usec
= pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
) - process_usec
;
372 return work_done
? 1 : 0;
375 static int unix_read(struct userdata
*u
, pa_usec_t
*sleep_usec
, pa_bool_t polled
) {
376 int work_done
= FALSE
;
377 pa_usec_t max_sleep_usec
= 0, process_usec
= 0;
378 size_t left_to_record
;
381 pa_source_assert_ref(u
->source
);
384 hw_sleep_time(u
, &max_sleep_usec
, &process_usec
);
391 if (PA_UNLIKELY((n
= pa_alsa_safe_avail(u
->pcm_handle
, u
->hwbuf_size
, &u
->source
->sample_spec
)) < 0)) {
393 if ((r
= try_recover(u
, "snd_pcm_avail", (int) n
)) == 0)
399 n_bytes
= (size_t) n
* u
->frame_size
;
400 left_to_record
= check_left_to_record(u
, n_bytes
);
404 pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
) > process_usec
+max_sleep_usec
/2)
407 if (PA_UNLIKELY(n_bytes
<= 0)) {
409 if (polled
&& pa_log_ratelimit())
410 pa_log(_("ALSA woke us up to read new data from the device, but there was actually nothing to read! "
411 "Most likely this is an ALSA driver bug. Please report this issue to the ALSA developers. "
412 "We were woken up with POLLIN set -- however a subsequent snd_pcm_avail_update() returned 0."));
421 snd_pcm_sframes_t frames
;
424 chunk
.memblock
= pa_memblock_new(u
->core
->mempool
, (size_t) -1);
426 frames
= (snd_pcm_sframes_t
) (pa_memblock_get_length(chunk
.memblock
) / u
->frame_size
);
428 if (frames
> (snd_pcm_sframes_t
) (n_bytes
/u
->frame_size
))
429 frames
= (snd_pcm_sframes_t
) (n_bytes
/u
->frame_size
);
431 /* pa_log_debug("%lu frames to read", (unsigned long) n); */
433 p
= pa_memblock_acquire(chunk
.memblock
);
434 frames
= snd_pcm_readi(u
->pcm_handle
, (uint8_t*) p
, (snd_pcm_uframes_t
) frames
);
435 pa_memblock_release(chunk
.memblock
);
437 pa_assert(frames
!= 0);
439 if (PA_UNLIKELY(frames
< 0)) {
440 pa_memblock_unref(chunk
.memblock
);
442 if ((r
= try_recover(u
, "snd_pcm_readi", (int) (frames
))) == 0)
449 chunk
.length
= (size_t) frames
* u
->frame_size
;
451 pa_source_post(u
->source
, &chunk
);
452 pa_memblock_unref(chunk
.memblock
);
456 u
->read_count
+= frames
* u
->frame_size
;
458 /* pa_log_debug("read %lu frames", (unsigned long) frames); */
460 if ((size_t) frames
* u
->frame_size
>= n_bytes
)
463 n_bytes
-= (size_t) frames
* u
->frame_size
;
467 *sleep_usec
= pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
) - process_usec
;
468 return work_done
? 1 : 0;
471 static void update_smoother(struct userdata
*u
) {
472 snd_pcm_sframes_t delay
= 0;
475 pa_usec_t now1
= 0, now2
;
476 snd_pcm_status_t
*status
;
478 snd_pcm_status_alloca(&status
);
481 pa_assert(u
->pcm_handle
);
483 /* Let's update the time smoother */
485 if (PA_UNLIKELY((err
= snd_pcm_delay(u
->pcm_handle
, &delay
)) < 0)) {
486 pa_log_warn("Failed to get delay: %s", snd_strerror(err
));
490 if (PA_UNLIKELY((err
= snd_pcm_status(u
->pcm_handle
, status
)) < 0))
491 pa_log_warn("Failed to get timestamp: %s", snd_strerror(err
));
493 snd_htimestamp_t htstamp
= { 0, 0 };
494 snd_pcm_status_get_htstamp(status
, &htstamp
);
495 now1
= pa_timespec_load(&htstamp
);
498 position
= u
->read_count
+ ((uint64_t) delay
* (uint64_t) u
->frame_size
);
500 /* Hmm, if the timestamp is 0, then it wasn't set and we take the current time */
502 now1
= pa_rtclock_usec();
504 now2
= pa_bytes_to_usec(position
, &u
->source
->sample_spec
);
506 pa_smoother_put(u
->smoother
, now1
, now2
);
509 static pa_usec_t
source_get_latency(struct userdata
*u
) {
511 pa_usec_t now1
, now2
;
515 now1
= pa_rtclock_usec();
516 now2
= pa_smoother_get(u
->smoother
, now1
);
518 delay
= (int64_t) now2
- (int64_t) pa_bytes_to_usec(u
->read_count
, &u
->source
->sample_spec
);
520 return delay
>= 0 ? (pa_usec_t
) delay
: 0;
523 static int build_pollfd(struct userdata
*u
) {
525 pa_assert(u
->pcm_handle
);
527 if (u
->alsa_rtpoll_item
)
528 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
530 if (!(u
->alsa_rtpoll_item
= pa_alsa_build_pollfd(u
->pcm_handle
, u
->rtpoll
)))
536 static int suspend(struct userdata
*u
) {
538 pa_assert(u
->pcm_handle
);
540 pa_smoother_pause(u
->smoother
, pa_rtclock_usec());
543 snd_pcm_close(u
->pcm_handle
);
544 u
->pcm_handle
= NULL
;
546 if (u
->alsa_rtpoll_item
) {
547 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
548 u
->alsa_rtpoll_item
= NULL
;
551 pa_log_info("Device suspended...");
556 static int update_sw_params(struct userdata
*u
) {
557 snd_pcm_uframes_t avail_min
;
562 /* Use the full buffer if noone asked us for anything specific */
568 if ((latency
= pa_source_get_requested_latency_within_thread(u
->source
)) != (pa_usec_t
) -1) {
571 pa_log_debug("latency set to %0.2fms", (double) latency
/ PA_USEC_PER_MSEC
);
573 b
= pa_usec_to_bytes(latency
, &u
->source
->sample_spec
);
575 /* We need at least one sample in our buffer */
577 if (PA_UNLIKELY(b
< u
->frame_size
))
580 u
->hwbuf_unused
= PA_LIKELY(b
< u
->hwbuf_size
) ? (u
->hwbuf_size
- b
) : 0;
583 fix_min_sleep_wakeup(u
);
584 fix_tsched_watermark(u
);
587 pa_log_debug("hwbuf_unused=%lu", (unsigned long) u
->hwbuf_unused
);
592 pa_usec_t sleep_usec
, process_usec
;
594 hw_sleep_time(u
, &sleep_usec
, &process_usec
);
595 avail_min
+= pa_usec_to_bytes(sleep_usec
, &u
->source
->sample_spec
) / u
->frame_size
;
598 pa_log_debug("setting avail_min=%lu", (unsigned long) avail_min
);
600 if ((err
= pa_alsa_set_sw_params(u
->pcm_handle
, avail_min
)) < 0) {
601 pa_log("Failed to set software parameters: %s", snd_strerror(err
));
608 static int unsuspend(struct userdata
*u
) {
613 snd_pcm_uframes_t period_size
;
616 pa_assert(!u
->pcm_handle
);
618 pa_log_info("Trying resume...");
620 snd_config_update_free_global();
622 if ((err
= snd_pcm_open(&u
->pcm_handle
, u
->device_name
, SND_PCM_STREAM_CAPTURE
,
623 /*SND_PCM_NONBLOCK|*/
624 SND_PCM_NO_AUTO_RESAMPLE
|
625 SND_PCM_NO_AUTO_CHANNELS
|
626 SND_PCM_NO_AUTO_FORMAT
)) < 0) {
627 pa_log("Error opening PCM device %s: %s", u
->device_name
, snd_strerror(err
));
631 ss
= u
->source
->sample_spec
;
632 nfrags
= u
->nfragments
;
633 period_size
= u
->fragment_size
/ u
->frame_size
;
637 if ((err
= pa_alsa_set_hw_params(u
->pcm_handle
, &ss
, &nfrags
, &period_size
, u
->hwbuf_size
/ u
->frame_size
, &b
, &d
, TRUE
)) < 0) {
638 pa_log("Failed to set hardware parameters: %s", snd_strerror(err
));
642 if (b
!= u
->use_mmap
|| d
!= u
->use_tsched
) {
643 pa_log_warn("Resume failed, couldn't get original access mode.");
647 if (!pa_sample_spec_equal(&ss
, &u
->source
->sample_spec
)) {
648 pa_log_warn("Resume failed, couldn't restore original sample settings.");
652 if (nfrags
!= u
->nfragments
|| period_size
*u
->frame_size
!= u
->fragment_size
) {
653 pa_log_warn("Resume failed, couldn't restore original fragment settings. (Old: %lu*%lu, New %lu*%lu)",
654 (unsigned long) u
->nfragments
, (unsigned long) u
->fragment_size
,
655 (unsigned long) nfrags
, period_size
* u
->frame_size
);
659 if (update_sw_params(u
) < 0)
662 if (build_pollfd(u
) < 0)
665 /* FIXME: We need to reload the volume somehow */
667 snd_pcm_start(u
->pcm_handle
);
668 pa_smoother_resume(u
->smoother
, pa_rtclock_usec());
670 pa_log_info("Resumed successfully...");
676 snd_pcm_close(u
->pcm_handle
);
677 u
->pcm_handle
= NULL
;
683 static int source_process_msg(pa_msgobject
*o
, int code
, void *data
, int64_t offset
, pa_memchunk
*chunk
) {
684 struct userdata
*u
= PA_SOURCE(o
)->userdata
;
688 case PA_SOURCE_MESSAGE_GET_LATENCY
: {
692 r
= source_get_latency(u
);
694 *((pa_usec_t
*) data
) = r
;
699 case PA_SOURCE_MESSAGE_SET_STATE
:
701 switch ((pa_source_state_t
) PA_PTR_TO_UINT(data
)) {
703 case PA_SOURCE_SUSPENDED
:
704 pa_assert(PA_SOURCE_IS_OPENED(u
->source
->thread_info
.state
));
712 case PA_SOURCE_RUNNING
:
714 if (u
->source
->thread_info
.state
== PA_SOURCE_INIT
) {
715 if (build_pollfd(u
) < 0)
718 snd_pcm_start(u
->pcm_handle
);
721 if (u
->source
->thread_info
.state
== PA_SOURCE_SUSPENDED
) {
722 if (unsuspend(u
) < 0)
728 case PA_SOURCE_UNLINKED
:
730 case PA_SOURCE_INVALID_STATE
:
737 return pa_source_process_msg(o
, code
, data
, offset
, chunk
);
740 static int mixer_callback(snd_mixer_elem_t
*elem
, unsigned int mask
) {
741 struct userdata
*u
= snd_mixer_elem_get_callback_private(elem
);
744 pa_assert(u
->mixer_handle
);
746 if (mask
== SND_CTL_EVENT_MASK_REMOVE
)
749 if (mask
& SND_CTL_EVENT_MASK_VALUE
) {
750 pa_source_get_volume(u
->source
, TRUE
);
751 pa_source_get_mute(u
->source
, TRUE
);
757 static pa_volume_t
from_alsa_volume(struct userdata
*u
, long alsa_vol
) {
759 return (pa_volume_t
) round(((double) (alsa_vol
- u
->hw_volume_min
) * PA_VOLUME_NORM
) /
760 (double) (u
->hw_volume_max
- u
->hw_volume_min
));
763 static long to_alsa_volume(struct userdata
*u
, pa_volume_t vol
) {
766 alsa_vol
= (long) round(((double) vol
* (double) (u
->hw_volume_max
- u
->hw_volume_min
))
767 / PA_VOLUME_NORM
) + u
->hw_volume_min
;
769 return PA_CLAMP_UNLIKELY(alsa_vol
, u
->hw_volume_min
, u
->hw_volume_max
);
772 static void source_get_volume_cb(pa_source
*s
) {
773 struct userdata
*u
= s
->userdata
;
777 char t
[PA_CVOLUME_SNPRINT_MAX
];
780 pa_assert(u
->mixer_elem
);
782 if (u
->mixer_seperate_channels
) {
784 r
.channels
= s
->sample_spec
.channels
;
786 for (i
= 0; i
< s
->sample_spec
.channels
; i
++) {
789 if (u
->hw_dB_supported
) {
791 if ((err
= snd_mixer_selem_get_capture_dB(u
->mixer_elem
, u
->mixer_map
[i
], &alsa_vol
)) < 0)
794 #ifdef HAVE_VALGRIND_MEMCHECK_H
795 VALGRIND_MAKE_MEM_DEFINED(&alsa_vol
, sizeof(alsa_vol
));
798 r
.values
[i
] = pa_sw_volume_from_dB((double) (alsa_vol
- u
->hw_dB_max
) / 100.0);
801 if ((err
= snd_mixer_selem_get_capture_volume(u
->mixer_elem
, u
->mixer_map
[i
], &alsa_vol
)) < 0)
804 r
.values
[i
] = from_alsa_volume(u
, alsa_vol
);
811 if (u
->hw_dB_supported
) {
813 if ((err
= snd_mixer_selem_get_capture_dB(u
->mixer_elem
, SND_MIXER_SCHN_MONO
, &alsa_vol
)) < 0)
816 #ifdef HAVE_VALGRIND_MEMCHECK_H
817 VALGRIND_MAKE_MEM_DEFINED(&alsa_vol
, sizeof(alsa_vol
));
820 pa_cvolume_set(&r
, s
->sample_spec
.channels
, pa_sw_volume_from_dB((double) (alsa_vol
- u
->hw_dB_max
) / 100.0));
824 if ((err
= snd_mixer_selem_get_capture_volume(u
->mixer_elem
, SND_MIXER_SCHN_MONO
, &alsa_vol
)) < 0)
827 pa_cvolume_set(&r
, s
->sample_spec
.channels
, from_alsa_volume(u
, alsa_vol
));
831 pa_log_debug("Read hardware volume: %s", pa_cvolume_snprint(t
, sizeof(t
), &r
));
833 if (!pa_cvolume_equal(&u
->hardware_volume
, &r
)) {
835 s
->virtual_volume
= u
->hardware_volume
= r
;
837 if (u
->hw_dB_supported
) {
840 /* Hmm, so the hardware volume changed, let's reset our software volume */
841 pa_cvolume_reset(&reset
, s
->sample_spec
.channels
);
842 pa_source_set_soft_volume(s
, &reset
);
849 pa_log_error("Unable to read volume: %s", snd_strerror(err
));
852 static void source_set_volume_cb(pa_source
*s
) {
853 struct userdata
*u
= s
->userdata
;
859 pa_assert(u
->mixer_elem
);
861 if (u
->mixer_seperate_channels
) {
863 r
.channels
= s
->sample_spec
.channels
;
865 for (i
= 0; i
< s
->sample_spec
.channels
; i
++) {
869 vol
= s
->virtual_volume
.values
[i
];
871 if (u
->hw_dB_supported
) {
873 alsa_vol
= (long) (pa_sw_volume_to_dB(vol
) * 100);
874 alsa_vol
+= u
->hw_dB_max
;
875 alsa_vol
= PA_CLAMP_UNLIKELY(alsa_vol
, u
->hw_dB_min
, u
->hw_dB_max
);
877 if ((err
= snd_mixer_selem_set_capture_dB(u
->mixer_elem
, u
->mixer_map
[i
], alsa_vol
, 1)) < 0)
880 if ((err
= snd_mixer_selem_get_capture_dB(u
->mixer_elem
, u
->mixer_map
[i
], &alsa_vol
)) < 0)
883 #ifdef HAVE_VALGRIND_MEMCHECK_H
884 VALGRIND_MAKE_MEM_DEFINED(&alsa_vol
, sizeof(alsa_vol
));
887 r
.values
[i
] = pa_sw_volume_from_dB((double) (alsa_vol
- u
->hw_dB_max
) / 100.0);
890 alsa_vol
= to_alsa_volume(u
, vol
);
892 if ((err
= snd_mixer_selem_set_capture_volume(u
->mixer_elem
, u
->mixer_map
[i
], alsa_vol
)) < 0)
895 if ((err
= snd_mixer_selem_get_capture_volume(u
->mixer_elem
, u
->mixer_map
[i
], &alsa_vol
)) < 0)
898 r
.values
[i
] = from_alsa_volume(u
, alsa_vol
);
906 vol
= pa_cvolume_max(&s
->virtual_volume
);
908 if (u
->hw_dB_supported
) {
909 alsa_vol
= (long) (pa_sw_volume_to_dB(vol
) * 100);
910 alsa_vol
+= u
->hw_dB_max
;
911 alsa_vol
= PA_CLAMP_UNLIKELY(alsa_vol
, u
->hw_dB_min
, u
->hw_dB_max
);
913 if ((err
= snd_mixer_selem_set_capture_dB_all(u
->mixer_elem
, alsa_vol
, 1)) < 0)
916 if ((err
= snd_mixer_selem_get_capture_dB(u
->mixer_elem
, SND_MIXER_SCHN_MONO
, &alsa_vol
)) < 0)
919 #ifdef HAVE_VALGRIND_MEMCHECK_H
920 VALGRIND_MAKE_MEM_DEFINED(&alsa_vol
, sizeof(alsa_vol
));
923 pa_cvolume_set(&r
, s
->sample_spec
.channels
, pa_sw_volume_from_dB((double) (alsa_vol
- u
->hw_dB_max
) / 100.0));
926 alsa_vol
= to_alsa_volume(u
, vol
);
928 if ((err
= snd_mixer_selem_set_capture_volume_all(u
->mixer_elem
, alsa_vol
)) < 0)
931 if ((err
= snd_mixer_selem_get_capture_volume(u
->mixer_elem
, SND_MIXER_SCHN_MONO
, &alsa_vol
)) < 0)
934 pa_cvolume_set(&r
, s
->sample_spec
.channels
, from_alsa_volume(u
, alsa_vol
));
938 u
->hardware_volume
= r
;
940 if (u
->hw_dB_supported
) {
941 char t
[PA_CVOLUME_SNPRINT_MAX
];
943 /* Match exactly what the user requested by software */
945 pa_sw_cvolume_divide(&s
->soft_volume
, &s
->virtual_volume
, &u
->hardware_volume
);
947 pa_log_debug("Requested volume: %s", pa_cvolume_snprint(t
, sizeof(t
), &s
->virtual_volume
));
948 pa_log_debug("Got hardware volume: %s", pa_cvolume_snprint(t
, sizeof(t
), &u
->hardware_volume
));
949 pa_log_debug("Calculated software volume: %s", pa_cvolume_snprint(t
, sizeof(t
), &s
->soft_volume
));
953 /* We can't match exactly what the user requested, hence let's
954 * at least tell the user about it */
956 s
->virtual_volume
= r
;
961 pa_log_error("Unable to set volume: %s", snd_strerror(err
));
964 static void source_get_mute_cb(pa_source
*s
) {
965 struct userdata
*u
= s
->userdata
;
969 pa_assert(u
->mixer_elem
);
971 if ((err
= snd_mixer_selem_get_capture_switch(u
->mixer_elem
, 0, &sw
)) < 0) {
972 pa_log_error("Unable to get switch: %s", snd_strerror(err
));
979 static void source_set_mute_cb(pa_source
*s
) {
980 struct userdata
*u
= s
->userdata
;
984 pa_assert(u
->mixer_elem
);
986 if ((err
= snd_mixer_selem_set_capture_switch_all(u
->mixer_elem
, !s
->muted
)) < 0) {
987 pa_log_error("Unable to set switch: %s", snd_strerror(err
));
992 static void source_update_requested_latency_cb(pa_source
*s
) {
993 struct userdata
*u
= s
->userdata
;
1002 static void thread_func(void *userdata
) {
1003 struct userdata
*u
= userdata
;
1004 unsigned short revents
= 0;
1008 pa_log_debug("Thread starting up");
1010 if (u
->core
->realtime_scheduling
)
1011 pa_make_realtime(u
->core
->realtime_priority
);
1013 pa_thread_mq_install(&u
->thread_mq
);
1014 pa_rtpoll_install(u
->rtpoll
);
1020 pa_log_debug("Loop");
1023 /* Read some data and pass it to the sources */
1024 if (PA_SOURCE_IS_OPENED(u
->source
->thread_info
.state
)) {
1026 pa_usec_t sleep_usec
= 0;
1029 work_done
= mmap_read(u
, &sleep_usec
, revents
& POLLIN
);
1031 work_done
= unix_read(u
, &sleep_usec
, revents
& POLLIN
);
1036 /* pa_log_debug("work_done = %i", work_done); */
1041 if (u
->use_tsched
) {
1044 /* OK, the capture buffer is now empty, let's
1045 * calculate when to wake up next */
1047 /* pa_log_debug("Waking up in %0.2fms (sound card clock).", (double) sleep_usec / PA_USEC_PER_MSEC); */
1049 /* Convert from the sound card time domain to the
1050 * system time domain */
1051 cusec
= pa_smoother_translate(u
->smoother
, pa_rtclock_usec(), sleep_usec
);
1053 /* pa_log_debug("Waking up in %0.2fms (system clock).", (double) cusec / PA_USEC_PER_MSEC); */
1055 /* We don't trust the conversion, so we wake up whatever comes first */
1056 pa_rtpoll_set_timer_relative(u
->rtpoll
, PA_MIN(sleep_usec
, cusec
));
1058 } else if (u
->use_tsched
)
1060 /* OK, we're in an invalid state, let's disable our timers */
1061 pa_rtpoll_set_timer_disabled(u
->rtpoll
);
1063 /* Hmm, nothing to do. Let's sleep */
1064 if ((ret
= pa_rtpoll_run(u
->rtpoll
, TRUE
)) < 0)
1070 /* Tell ALSA about this and process its response */
1071 if (PA_SOURCE_IS_OPENED(u
->source
->thread_info
.state
)) {
1072 struct pollfd
*pollfd
;
1076 pollfd
= pa_rtpoll_item_get_pollfd(u
->alsa_rtpoll_item
, &n
);
1078 if ((err
= snd_pcm_poll_descriptors_revents(u
->pcm_handle
, pollfd
, n
, &revents
)) < 0) {
1079 pa_log("snd_pcm_poll_descriptors_revents() failed: %s", snd_strerror(err
));
1083 if (revents
& ~POLLIN
) {
1084 if (pa_alsa_recover_from_poll(u
->pcm_handle
, revents
) < 0)
1087 snd_pcm_start(u
->pcm_handle
);
1088 } else if (revents
&& u
->use_tsched
&& pa_log_ratelimit())
1089 pa_log_debug("Wakeup from ALSA!");
1096 /* If this was no regular exit from the loop we have to continue
1097 * processing messages until we received PA_MESSAGE_SHUTDOWN */
1098 pa_asyncmsgq_post(u
->thread_mq
.outq
, PA_MSGOBJECT(u
->core
), PA_CORE_MESSAGE_UNLOAD_MODULE
, u
->module
, 0, NULL
, NULL
);
1099 pa_asyncmsgq_wait_for(u
->thread_mq
.inq
, PA_MESSAGE_SHUTDOWN
);
1102 pa_log_debug("Thread shutting down");
1105 static void set_source_name(pa_source_new_data
*data
, pa_modargs
*ma
, const char *device_id
, const char *device_name
) {
1111 pa_assert(device_name
);
1113 if ((n
= pa_modargs_get_value(ma
, "source_name", NULL
))) {
1114 pa_source_new_data_set_name(data
, n
);
1115 data
->namereg_fail
= TRUE
;
1119 if ((n
= pa_modargs_get_value(ma
, "name", NULL
)))
1120 data
->namereg_fail
= TRUE
;
1122 n
= device_id
? device_id
: device_name
;
1123 data
->namereg_fail
= FALSE
;
1126 t
= pa_sprintf_malloc("alsa_input.%s", n
);
1127 pa_source_new_data_set_name(data
, t
);
1131 static int setup_mixer(struct userdata
*u
, pa_bool_t ignore_dB
) {
1134 if (!u
->mixer_handle
)
1137 pa_assert(u
->mixer_elem
);
1139 if (snd_mixer_selem_has_capture_volume(u
->mixer_elem
)) {
1140 pa_bool_t suitable
= FALSE
;
1142 if (snd_mixer_selem_get_capture_volume_range(u
->mixer_elem
, &u
->hw_volume_min
, &u
->hw_volume_max
) < 0)
1143 pa_log_info("Failed to get volume range. Falling back to software volume control.");
1144 else if (u
->hw_volume_min
>= u
->hw_volume_max
)
1145 pa_log_warn("Your kernel driver is broken: it reports a volume range from %li to %li which makes no sense.", u
->hw_volume_min
, u
->hw_volume_max
);
1147 pa_log_info("Volume ranges from %li to %li.", u
->hw_volume_min
, u
->hw_volume_max
);
1152 if (ignore_dB
|| snd_mixer_selem_get_capture_dB_range(u
->mixer_elem
, &u
->hw_dB_min
, &u
->hw_dB_max
) < 0)
1153 pa_log_info("Mixer doesn't support dB information or data is ignored.");
1155 #ifdef HAVE_VALGRIND_MEMCHECK_H
1156 VALGRIND_MAKE_MEM_DEFINED(&u
->hw_dB_min
, sizeof(u
->hw_dB_min
));
1157 VALGRIND_MAKE_MEM_DEFINED(&u
->hw_dB_max
, sizeof(u
->hw_dB_max
));
1160 if (u
->hw_dB_min
>= u
->hw_dB_max
)
1161 pa_log_warn("Your kernel driver is broken: it reports a volume range from %0.2f dB to %0.2f dB which makes no sense.", (double) u
->hw_dB_min
/100.0, (double) u
->hw_dB_max
/100.0);
1163 pa_log_info("Volume ranges from %0.2f dB to %0.2f dB.", (double) u
->hw_dB_min
/100.0, (double) u
->hw_dB_max
/100.0);
1164 u
->hw_dB_supported
= TRUE
;
1166 if (u
->hw_dB_max
> 0) {
1167 u
->source
->base_volume
= pa_sw_volume_from_dB(- (double) u
->hw_dB_max
/100.0);
1168 pa_log_info("Fixing base volume to %0.2f dB", pa_sw_volume_to_dB(u
->source
->base_volume
));
1170 pa_log_info("No particular base volume set, fixing to 0 dB");
1174 if (!u
->hw_dB_supported
&&
1175 u
->hw_volume_max
- u
->hw_volume_min
< 3) {
1177 pa_log_info("Device has less than 4 volume levels. Falling back to software volume control.");
1183 u
->mixer_seperate_channels
= pa_alsa_calc_mixer_map(u
->mixer_elem
, &u
->source
->channel_map
, u
->mixer_map
, FALSE
) >= 0;
1185 u
->source
->get_volume
= source_get_volume_cb
;
1186 u
->source
->set_volume
= source_set_volume_cb
;
1187 u
->source
->flags
|= PA_SOURCE_HW_VOLUME_CTRL
| (u
->hw_dB_supported
? PA_SOURCE_DECIBEL_VOLUME
: 0);
1188 pa_log_info("Using hardware volume control. Hardware dB scale %s.", u
->hw_dB_supported
? "supported" : "not supported");
1190 if (!u
->hw_dB_supported
)
1191 u
->source
->n_volume_steps
= u
->hw_volume_max
- u
->hw_volume_min
+ 1;
1193 pa_log_info("Using software volume control.");
1196 if (snd_mixer_selem_has_capture_switch(u
->mixer_elem
)) {
1197 u
->source
->get_mute
= source_get_mute_cb
;
1198 u
->source
->set_mute
= source_set_mute_cb
;
1199 u
->source
->flags
|= PA_SOURCE_HW_MUTE_CTRL
;
1201 pa_log_info("Using software mute control.");
1203 u
->mixer_fdl
= pa_alsa_fdlist_new();
1205 if (pa_alsa_fdlist_set_mixer(u
->mixer_fdl
, u
->mixer_handle
, u
->core
->mainloop
) < 0) {
1206 pa_log("Failed to initialize file descriptor monitoring");
1210 snd_mixer_elem_set_callback(u
->mixer_elem
, mixer_callback
);
1211 snd_mixer_elem_set_callback_private(u
->mixer_elem
, u
);
1216 pa_source
*pa_alsa_source_new(pa_module
*m
, pa_modargs
*ma
, const char*driver
, pa_card
*card
, const pa_alsa_profile_info
*profile
) {
1218 struct userdata
*u
= NULL
;
1219 const char *dev_id
= NULL
;
1222 uint32_t nfrags
, hwbuf_size
, frag_size
, tsched_size
, tsched_watermark
;
1223 snd_pcm_uframes_t period_frames
, tsched_frames
;
1225 pa_bool_t use_mmap
= TRUE
, b
, use_tsched
= TRUE
, d
, ignore_dB
= FALSE
;
1226 pa_source_new_data data
;
1231 ss
= m
->core
->default_sample_spec
;
1232 map
= m
->core
->default_channel_map
;
1233 if (pa_modargs_get_sample_spec_and_channel_map(ma
, &ss
, &map
, PA_CHANNEL_MAP_ALSA
) < 0) {
1234 pa_log("Failed to parse sample specification");
1238 frame_size
= pa_frame_size(&ss
);
1240 nfrags
= m
->core
->default_n_fragments
;
1241 frag_size
= (uint32_t) pa_usec_to_bytes(m
->core
->default_fragment_size_msec
*PA_USEC_PER_MSEC
, &ss
);
1243 frag_size
= (uint32_t) frame_size
;
1244 tsched_size
= (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_BUFFER_USEC
, &ss
);
1245 tsched_watermark
= (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_WATERMARK_USEC
, &ss
);
1247 if (pa_modargs_get_value_u32(ma
, "fragments", &nfrags
) < 0 ||
1248 pa_modargs_get_value_u32(ma
, "fragment_size", &frag_size
) < 0 ||
1249 pa_modargs_get_value_u32(ma
, "tsched_buffer_size", &tsched_size
) < 0 ||
1250 pa_modargs_get_value_u32(ma
, "tsched_buffer_watermark", &tsched_watermark
) < 0) {
1251 pa_log("Failed to parse buffer metrics");
1255 hwbuf_size
= frag_size
* nfrags
;
1256 period_frames
= frag_size
/frame_size
;
1257 tsched_frames
= tsched_size
/frame_size
;
1259 if (pa_modargs_get_value_boolean(ma
, "mmap", &use_mmap
) < 0) {
1260 pa_log("Failed to parse mmap argument.");
1264 if (pa_modargs_get_value_boolean(ma
, "tsched", &use_tsched
) < 0) {
1265 pa_log("Failed to parse timer_scheduling argument.");
1269 if (pa_modargs_get_value_boolean(ma
, "ignore_dB", &ignore_dB
) < 0) {
1270 pa_log("Failed to parse ignore_dB argument.");
1274 if (use_tsched
&& !pa_rtclock_hrtimer()) {
1275 pa_log_notice("Disabling timer-based scheduling because high-resolution timers are not available from the kernel.");
1279 u
= pa_xnew0(struct userdata
, 1);
1282 u
->use_mmap
= use_mmap
;
1283 u
->use_tsched
= use_tsched
;
1284 u
->rtpoll
= pa_rtpoll_new();
1285 pa_thread_mq_init(&u
->thread_mq
, m
->core
->mainloop
, u
->rtpoll
);
1286 u
->alsa_rtpoll_item
= NULL
;
1288 u
->smoother
= pa_smoother_new(DEFAULT_TSCHED_WATERMARK_USEC
*2, DEFAULT_TSCHED_WATERMARK_USEC
*2, TRUE
, 5);
1289 pa_smoother_set_time_offset(u
->smoother
, pa_rtclock_usec());
1296 if (!(dev_id
= pa_modargs_get_value(ma
, "device_id", NULL
))) {
1297 pa_log("device_id= not set");
1301 if (!(u
->pcm_handle
= pa_alsa_open_by_device_id_profile(
1305 SND_PCM_STREAM_CAPTURE
,
1306 &nfrags
, &period_frames
, tsched_frames
,
1310 } else if ((dev_id
= pa_modargs_get_value(ma
, "device_id", NULL
))) {
1312 if (!(u
->pcm_handle
= pa_alsa_open_by_device_id_auto(
1316 SND_PCM_STREAM_CAPTURE
,
1317 &nfrags
, &period_frames
, tsched_frames
,
1323 if (!(u
->pcm_handle
= pa_alsa_open_by_device_string(
1324 pa_modargs_get_value(ma
, "device", DEFAULT_DEVICE
),
1327 SND_PCM_STREAM_CAPTURE
,
1328 &nfrags
, &period_frames
, tsched_frames
,
1333 pa_assert(u
->device_name
);
1334 pa_log_info("Successfully opened device %s.", u
->device_name
);
1337 pa_log_info("Selected configuration '%s' (%s).", profile
->description
, profile
->name
);
1339 if (use_mmap
&& !b
) {
1340 pa_log_info("Device doesn't support mmap(), falling back to UNIX read/write mode.");
1341 u
->use_mmap
= use_mmap
= FALSE
;
1344 if (use_tsched
&& (!b
|| !d
)) {
1345 pa_log_info("Cannot enable timer-based scheduling, falling back to sound IRQ scheduling.");
1346 u
->use_tsched
= use_tsched
= FALSE
;
1350 pa_log_info("Successfully enabled mmap() mode.");
1353 pa_log_info("Successfully enabled timer-based scheduling mode.");
1355 /* ALSA might tweak the sample spec, so recalculate the frame size */
1356 frame_size
= pa_frame_size(&ss
);
1358 pa_alsa_find_mixer_and_elem(u
->pcm_handle
, &u
->mixer_handle
, &u
->mixer_elem
);
1360 pa_source_new_data_init(&data
);
1361 data
.driver
= driver
;
1364 set_source_name(&data
, ma
, dev_id
, u
->device_name
);
1365 pa_source_new_data_set_sample_spec(&data
, &ss
);
1366 pa_source_new_data_set_channel_map(&data
, &map
);
1368 pa_alsa_init_proplist_pcm(m
->core
, data
.proplist
, u
->pcm_handle
);
1369 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_STRING
, u
->device_name
);
1370 pa_proplist_setf(data
.proplist
, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE
, "%lu", (unsigned long) (period_frames
* frame_size
* nfrags
));
1371 pa_proplist_setf(data
.proplist
, PA_PROP_DEVICE_BUFFERING_FRAGMENT_SIZE
, "%lu", (unsigned long) (period_frames
* frame_size
));
1372 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_ACCESS_MODE
, u
->use_tsched
? "mmap+timer" : (u
->use_mmap
? "mmap" : "serial"));
1375 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_PROFILE_NAME
, profile
->name
);
1376 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_PROFILE_DESCRIPTION
, profile
->description
);
1379 u
->source
= pa_source_new(m
->core
, &data
, PA_SOURCE_HARDWARE
|PA_SOURCE_LATENCY
);
1380 pa_source_new_data_done(&data
);
1383 pa_log("Failed to create source object");
1387 u
->source
->parent
.process_msg
= source_process_msg
;
1388 u
->source
->update_requested_latency
= source_update_requested_latency_cb
;
1389 u
->source
->userdata
= u
;
1391 pa_source_set_asyncmsgq(u
->source
, u
->thread_mq
.inq
);
1392 pa_source_set_rtpoll(u
->source
, u
->rtpoll
);
1394 u
->frame_size
= frame_size
;
1395 u
->fragment_size
= frag_size
= (uint32_t) (period_frames
* frame_size
);
1396 u
->nfragments
= nfrags
;
1397 u
->hwbuf_size
= u
->fragment_size
* nfrags
;
1398 u
->tsched_watermark
= tsched_watermark
;
1399 pa_cvolume_mute(&u
->hardware_volume
, u
->source
->sample_spec
.channels
);
1402 fix_min_sleep_wakeup(u
);
1403 fix_tsched_watermark(u
);
1406 pa_source_set_latency_range(u
->source
,
1407 !use_tsched
? pa_bytes_to_usec(u
->hwbuf_size
, &ss
) : (pa_usec_t
) -1,
1408 pa_bytes_to_usec(u
->hwbuf_size
, &ss
));
1410 pa_log_info("Using %u fragments of size %lu bytes, buffer time is %0.2fms",
1411 nfrags
, (long unsigned) u
->fragment_size
,
1412 (double) pa_bytes_to_usec(u
->hwbuf_size
, &ss
) / PA_USEC_PER_MSEC
);
1415 pa_log_info("Time scheduling watermark is %0.2fms",
1416 (double) pa_bytes_to_usec(u
->tsched_watermark
, &ss
) / PA_USEC_PER_MSEC
);
1418 if (update_sw_params(u
) < 0)
1421 if (setup_mixer(u
, ignore_dB
) < 0)
1424 pa_alsa_dump(u
->pcm_handle
);
1426 if (!(u
->thread
= pa_thread_new(thread_func
, u
))) {
1427 pa_log("Failed to create thread.");
1430 /* Get initial mixer settings */
1431 if (data
.volume_is_set
) {
1432 if (u
->source
->set_volume
)
1433 u
->source
->set_volume(u
->source
);
1435 if (u
->source
->get_volume
)
1436 u
->source
->get_volume(u
->source
);
1439 if (data
.muted_is_set
) {
1440 if (u
->source
->set_mute
)
1441 u
->source
->set_mute(u
->source
);
1443 if (u
->source
->get_mute
)
1444 u
->source
->get_mute(u
->source
);
1447 pa_source_put(u
->source
);
1458 static void userdata_free(struct userdata
*u
) {
1462 pa_source_unlink(u
->source
);
1465 pa_asyncmsgq_send(u
->thread_mq
.inq
, NULL
, PA_MESSAGE_SHUTDOWN
, NULL
, 0, NULL
);
1466 pa_thread_free(u
->thread
);
1469 pa_thread_mq_done(&u
->thread_mq
);
1472 pa_source_unref(u
->source
);
1474 if (u
->alsa_rtpoll_item
)
1475 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
1478 pa_rtpoll_free(u
->rtpoll
);
1481 pa_alsa_fdlist_free(u
->mixer_fdl
);
1483 if (u
->mixer_handle
)
1484 snd_mixer_close(u
->mixer_handle
);
1486 if (u
->pcm_handle
) {
1487 snd_pcm_drop(u
->pcm_handle
);
1488 snd_pcm_close(u
->pcm_handle
);
1492 pa_smoother_free(u
->smoother
);
1494 pa_xfree(u
->device_name
);
1498 void pa_alsa_source_free(pa_source
*s
) {
1501 pa_source_assert_ref(s
);
1502 pa_assert_se(u
= s
->userdata
);