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 <modules/reserve-wrap.h>
59 #include "alsa-util.h"
60 #include "alsa-source.h"
62 /* #define DEBUG_TIMING */
64 #define DEFAULT_DEVICE "default"
65 #define DEFAULT_TSCHED_BUFFER_USEC (2*PA_USEC_PER_SEC) /* 2s */
66 #define DEFAULT_TSCHED_WATERMARK_USEC (20*PA_USEC_PER_MSEC) /* 20ms */
67 #define TSCHED_MIN_SLEEP_USEC (10*PA_USEC_PER_MSEC) /* 10ms */
68 #define TSCHED_MIN_WAKEUP_USEC (4*PA_USEC_PER_MSEC) /* 4ms */
76 pa_thread_mq thread_mq
;
79 snd_pcm_t
*pcm_handle
;
81 pa_alsa_fdlist
*mixer_fdl
;
82 snd_mixer_t
*mixer_handle
;
83 snd_mixer_elem_t
*mixer_elem
;
84 long hw_volume_max
, hw_volume_min
;
85 long hw_dB_max
, hw_dB_min
;
86 pa_bool_t hw_dB_supported
:1;
87 pa_bool_t mixer_seperate_channels
:1;
89 pa_cvolume hardware_volume
;
91 size_t frame_size
, fragment_size
, hwbuf_size
, tsched_watermark
, hwbuf_unused
, min_sleep
, min_wakeup
;
96 pa_bool_t use_mmap
:1, use_tsched
:1;
98 pa_rtpoll_item
*alsa_rtpoll_item
;
100 snd_mixer_selem_channel_id_t mixer_map
[SND_MIXER_SCHN_LAST
];
102 pa_smoother
*smoother
;
105 pa_reserve_wrapper
*reserve
;
106 pa_hook_slot
*reserve_slot
;
109 static void userdata_free(struct userdata
*u
);
111 static pa_hook_result_t
reserve_cb(pa_reserve_wrapper
*r
, void *forced
, struct userdata
*u
) {
115 if (pa_source_suspend(u
->source
, TRUE
) < 0)
116 return PA_HOOK_CANCEL
;
121 static void reserve_done(struct userdata
*u
) {
124 if (u
->reserve_slot
) {
125 pa_hook_slot_free(u
->reserve_slot
);
126 u
->reserve_slot
= NULL
;
130 pa_reserve_wrapper_unref(u
->reserve
);
135 static void reserve_update(struct userdata
*u
) {
136 const char *description
;
142 if ((description
= pa_proplist_gets(u
->source
->proplist
, PA_PROP_DEVICE_DESCRIPTION
)))
143 pa_reserve_wrapper_set_application_device_name(u
->reserve
, description
);
146 static int reserve_init(struct userdata
*u
, const char *dname
) {
155 /* We are resuming, try to lock the device */
156 if (!(rname
= pa_alsa_get_reserve_name(dname
)))
159 u
->reserve
= pa_reserve_wrapper_get(u
->core
, rname
);
167 pa_assert(!u
->reserve_slot
);
168 u
->reserve_slot
= pa_hook_connect(pa_reserve_wrapper_hook(u
->reserve
), PA_HOOK_NORMAL
, (pa_hook_cb_t
) reserve_cb
, u
);
173 static void fix_min_sleep_wakeup(struct userdata
*u
) {
174 size_t max_use
, max_use_2
;
177 max_use
= u
->hwbuf_size
- u
->hwbuf_unused
;
178 max_use_2
= pa_frame_align(max_use
/2, &u
->source
->sample_spec
);
180 u
->min_sleep
= pa_usec_to_bytes(TSCHED_MIN_SLEEP_USEC
, &u
->source
->sample_spec
);
181 u
->min_sleep
= PA_CLAMP(u
->min_sleep
, u
->frame_size
, max_use_2
);
183 u
->min_wakeup
= pa_usec_to_bytes(TSCHED_MIN_WAKEUP_USEC
, &u
->source
->sample_spec
);
184 u
->min_wakeup
= PA_CLAMP(u
->min_wakeup
, u
->frame_size
, max_use_2
);
187 static void fix_tsched_watermark(struct userdata
*u
) {
191 max_use
= u
->hwbuf_size
- u
->hwbuf_unused
;
193 if (u
->tsched_watermark
> max_use
- u
->min_sleep
)
194 u
->tsched_watermark
= max_use
- u
->min_sleep
;
196 if (u
->tsched_watermark
< u
->min_wakeup
)
197 u
->tsched_watermark
= u
->min_wakeup
;
200 static void adjust_after_overrun(struct userdata
*u
) {
201 size_t old_watermark
;
202 pa_usec_t old_min_latency
, new_min_latency
;
206 /* First, just try to increase the watermark */
207 old_watermark
= u
->tsched_watermark
;
208 u
->tsched_watermark
*= 2;
209 fix_tsched_watermark(u
);
211 if (old_watermark
!= u
->tsched_watermark
) {
212 pa_log_notice("Increasing wakeup watermark to %0.2f ms",
213 (double) pa_bytes_to_usec(u
->tsched_watermark
, &u
->source
->sample_spec
) / PA_USEC_PER_MSEC
);
217 /* Hmm, we cannot increase the watermark any further, hence let's raise the latency */
218 old_min_latency
= u
->source
->thread_info
.min_latency
;
219 new_min_latency
= PA_MIN(old_min_latency
* 2, u
->source
->thread_info
.max_latency
);
221 if (old_min_latency
!= new_min_latency
) {
222 pa_log_notice("Increasing minimal latency to %0.2f ms",
223 (double) new_min_latency
/ PA_USEC_PER_MSEC
);
225 pa_source_update_latency_range(u
->source
, new_min_latency
, u
->source
->thread_info
.max_latency
);
229 /* When we reach this we're officialy fucked! */
232 static pa_usec_t
hw_sleep_time(struct userdata
*u
, pa_usec_t
*sleep_usec
, pa_usec_t
*process_usec
) {
237 usec
= pa_source_get_requested_latency_within_thread(u
->source
);
239 if (usec
== (pa_usec_t
) -1)
240 usec
= pa_bytes_to_usec(u
->hwbuf_size
, &u
->source
->sample_spec
);
242 wm
= pa_bytes_to_usec(u
->tsched_watermark
, &u
->source
->sample_spec
);
247 *sleep_usec
= usec
- wm
;
251 pa_log_debug("Buffer time: %lu ms; Sleep time: %lu ms; Process time: %lu ms",
252 (unsigned long) (usec
/ PA_USEC_PER_MSEC
),
253 (unsigned long) (*sleep_usec
/ PA_USEC_PER_MSEC
),
254 (unsigned long) (*process_usec
/ PA_USEC_PER_MSEC
));
260 static int try_recover(struct userdata
*u
, const char *call
, int err
) {
265 pa_log_debug("%s: %s", call
, snd_strerror(err
));
267 pa_assert(err
!= -EAGAIN
);
270 pa_log_debug("%s: Buffer overrun!", call
);
272 if ((err
= snd_pcm_recover(u
->pcm_handle
, err
, 1)) < 0) {
273 pa_log("%s: %s", call
, snd_strerror(err
));
277 snd_pcm_start(u
->pcm_handle
);
281 static size_t check_left_to_record(struct userdata
*u
, size_t n_bytes
) {
282 size_t left_to_record
;
283 size_t rec_space
= u
->hwbuf_size
- u
->hwbuf_unused
;
285 /* We use <= instead of < for this check here because an overrun
286 * only happens after the last sample was processed, not already when
287 * it is removed from the buffer. This is particularly important
288 * when block transfer is used. */
290 if (n_bytes
<= rec_space
) {
291 left_to_record
= rec_space
- n_bytes
;
294 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
);
304 if (pa_log_ratelimit())
305 pa_log_info("Overrun!");
308 adjust_after_overrun(u
);
311 return left_to_record
;
314 static int mmap_read(struct userdata
*u
, pa_usec_t
*sleep_usec
, pa_bool_t polled
) {
315 pa_bool_t work_done
= FALSE
;
316 pa_usec_t max_sleep_usec
= 0, process_usec
= 0;
317 size_t left_to_record
;
321 pa_source_assert_ref(u
->source
);
324 hw_sleep_time(u
, &max_sleep_usec
, &process_usec
);
331 if (PA_UNLIKELY((n
= pa_alsa_safe_avail(u
->pcm_handle
, u
->hwbuf_size
, &u
->source
->sample_spec
)) < 0)) {
333 if ((r
= try_recover(u
, "snd_pcm_avail", (int) n
)) == 0)
339 n_bytes
= (size_t) n
* u
->frame_size
;
342 pa_log_debug("avail: %lu", (unsigned long) n_bytes
);
345 left_to_record
= check_left_to_record(u
, n_bytes
);
349 pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
) > process_usec
+max_sleep_usec
/2) {
351 pa_log_debug("Not reading, because too early.");
356 if (PA_UNLIKELY(n_bytes
<= 0)) {
360 char *dn
= pa_alsa_get_driver_name_by_pcm(u
->pcm_handle
);
361 pa_log(_("ALSA woke us up to read new data from the device, but there was actually nothing to read!\n"
362 "Most likely this is a bug in the ALSA driver '%s'. Please report this issue to the ALSA developers.\n"
363 "We were woken up with POLLIN set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail."),
369 pa_log_debug("Not reading, because not necessary.");
376 pa_log_debug("Not filling up, because already too many iterations.");
385 pa_log_debug("Reading");
390 const snd_pcm_channel_area_t
*areas
;
391 snd_pcm_uframes_t offset
, frames
;
394 snd_pcm_sframes_t sframes
;
396 frames
= (snd_pcm_uframes_t
) (n_bytes
/ u
->frame_size
);
398 /* pa_log_debug("%lu frames to read", (unsigned long) frames); */
400 if (PA_UNLIKELY((err
= pa_alsa_safe_mmap_begin(u
->pcm_handle
, &areas
, &offset
, &frames
, u
->hwbuf_size
, &u
->source
->sample_spec
)) < 0)) {
402 if ((r
= try_recover(u
, "snd_pcm_mmap_begin", err
)) == 0)
408 /* Make sure that if these memblocks need to be copied they will fit into one slot */
409 if (frames
> pa_mempool_block_size_max(u
->source
->core
->mempool
)/u
->frame_size
)
410 frames
= pa_mempool_block_size_max(u
->source
->core
->mempool
)/u
->frame_size
;
412 /* Check these are multiples of 8 bit */
413 pa_assert((areas
[0].first
& 7) == 0);
414 pa_assert((areas
[0].step
& 7)== 0);
416 /* We assume a single interleaved memory buffer */
417 pa_assert((areas
[0].first
>> 3) == 0);
418 pa_assert((areas
[0].step
>> 3) == u
->frame_size
);
420 p
= (uint8_t*) areas
[0].addr
+ (offset
* u
->frame_size
);
422 chunk
.memblock
= pa_memblock_new_fixed(u
->core
->mempool
, p
, frames
* u
->frame_size
, TRUE
);
423 chunk
.length
= pa_memblock_get_length(chunk
.memblock
);
426 pa_source_post(u
->source
, &chunk
);
427 pa_memblock_unref_fixed(chunk
.memblock
);
429 if (PA_UNLIKELY((sframes
= snd_pcm_mmap_commit(u
->pcm_handle
, offset
, frames
)) < 0)) {
431 if ((r
= try_recover(u
, "snd_pcm_mmap_commit", (int) sframes
)) == 0)
439 u
->read_count
+= frames
* u
->frame_size
;
442 pa_log_debug("Read %lu bytes", (unsigned long) (frames
* u
->frame_size
));
445 if ((size_t) frames
* u
->frame_size
>= n_bytes
)
448 n_bytes
-= (size_t) frames
* u
->frame_size
;
452 *sleep_usec
= pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
) - process_usec
;
453 return work_done
? 1 : 0;
456 static int unix_read(struct userdata
*u
, pa_usec_t
*sleep_usec
, pa_bool_t polled
) {
457 int work_done
= FALSE
;
458 pa_usec_t max_sleep_usec
= 0, process_usec
= 0;
459 size_t left_to_record
;
463 pa_source_assert_ref(u
->source
);
466 hw_sleep_time(u
, &max_sleep_usec
, &process_usec
);
473 if (PA_UNLIKELY((n
= pa_alsa_safe_avail(u
->pcm_handle
, u
->hwbuf_size
, &u
->source
->sample_spec
)) < 0)) {
475 if ((r
= try_recover(u
, "snd_pcm_avail", (int) n
)) == 0)
481 n_bytes
= (size_t) n
* u
->frame_size
;
482 left_to_record
= check_left_to_record(u
, n_bytes
);
486 pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
) > process_usec
+max_sleep_usec
/2)
489 if (PA_UNLIKELY(n_bytes
<= 0)) {
493 char *dn
= pa_alsa_get_driver_name_by_pcm(u
->pcm_handle
);
494 pa_log(_("ALSA woke us up to read new data from the device, but there was actually nothing to read!\n"
495 "Most likely this is a bug in the ALSA driver '%s'. Please report this issue to the ALSA developers.\n"
496 "We were woken up with POLLIN set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail."),
506 pa_log_debug("Not filling up, because already too many iterations.");
516 snd_pcm_sframes_t frames
;
519 chunk
.memblock
= pa_memblock_new(u
->core
->mempool
, (size_t) -1);
521 frames
= (snd_pcm_sframes_t
) (pa_memblock_get_length(chunk
.memblock
) / u
->frame_size
);
523 if (frames
> (snd_pcm_sframes_t
) (n_bytes
/u
->frame_size
))
524 frames
= (snd_pcm_sframes_t
) (n_bytes
/u
->frame_size
);
526 /* pa_log_debug("%lu frames to read", (unsigned long) n); */
528 p
= pa_memblock_acquire(chunk
.memblock
);
529 frames
= snd_pcm_readi(u
->pcm_handle
, (uint8_t*) p
, (snd_pcm_uframes_t
) frames
);
530 pa_memblock_release(chunk
.memblock
);
532 pa_assert(frames
!= 0);
534 if (PA_UNLIKELY(frames
< 0)) {
535 pa_memblock_unref(chunk
.memblock
);
537 if ((r
= try_recover(u
, "snd_pcm_readi", (int) (frames
))) == 0)
544 chunk
.length
= (size_t) frames
* u
->frame_size
;
546 pa_source_post(u
->source
, &chunk
);
547 pa_memblock_unref(chunk
.memblock
);
551 u
->read_count
+= frames
* u
->frame_size
;
553 /* pa_log_debug("read %lu frames", (unsigned long) frames); */
555 if ((size_t) frames
* u
->frame_size
>= n_bytes
)
558 n_bytes
-= (size_t) frames
* u
->frame_size
;
562 *sleep_usec
= pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
) - process_usec
;
563 return work_done
? 1 : 0;
566 static void update_smoother(struct userdata
*u
) {
567 snd_pcm_sframes_t delay
= 0;
570 pa_usec_t now1
= 0, now2
;
571 snd_pcm_status_t
*status
;
573 snd_pcm_status_alloca(&status
);
576 pa_assert(u
->pcm_handle
);
578 /* Let's update the time smoother */
580 if (PA_UNLIKELY((err
= pa_alsa_safe_delay(u
->pcm_handle
, &delay
, u
->hwbuf_size
, &u
->source
->sample_spec
)) < 0)) {
581 pa_log_warn("Failed to get delay: %s", snd_strerror(err
));
585 if (PA_UNLIKELY((err
= snd_pcm_status(u
->pcm_handle
, status
)) < 0))
586 pa_log_warn("Failed to get timestamp: %s", snd_strerror(err
));
588 snd_htimestamp_t htstamp
= { 0, 0 };
589 snd_pcm_status_get_htstamp(status
, &htstamp
);
590 now1
= pa_timespec_load(&htstamp
);
593 position
= u
->read_count
+ ((uint64_t) delay
* (uint64_t) u
->frame_size
);
595 /* Hmm, if the timestamp is 0, then it wasn't set and we take the current time */
597 now1
= pa_rtclock_usec();
599 now2
= pa_bytes_to_usec(position
, &u
->source
->sample_spec
);
601 pa_smoother_put(u
->smoother
, now1
, now2
);
604 static pa_usec_t
source_get_latency(struct userdata
*u
) {
606 pa_usec_t now1
, now2
;
610 now1
= pa_rtclock_usec();
611 now2
= pa_smoother_get(u
->smoother
, now1
);
613 delay
= (int64_t) now2
- (int64_t) pa_bytes_to_usec(u
->read_count
, &u
->source
->sample_spec
);
615 return delay
>= 0 ? (pa_usec_t
) delay
: 0;
618 static int build_pollfd(struct userdata
*u
) {
620 pa_assert(u
->pcm_handle
);
622 if (u
->alsa_rtpoll_item
)
623 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
625 if (!(u
->alsa_rtpoll_item
= pa_alsa_build_pollfd(u
->pcm_handle
, u
->rtpoll
)))
631 static int suspend(struct userdata
*u
) {
633 pa_assert(u
->pcm_handle
);
635 pa_smoother_pause(u
->smoother
, pa_rtclock_usec());
638 snd_pcm_close(u
->pcm_handle
);
639 u
->pcm_handle
= NULL
;
641 if (u
->alsa_rtpoll_item
) {
642 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
643 u
->alsa_rtpoll_item
= NULL
;
646 pa_log_info("Device suspended...");
651 static int update_sw_params(struct userdata
*u
) {
652 snd_pcm_uframes_t avail_min
;
657 /* Use the full buffer if noone asked us for anything specific */
663 if ((latency
= pa_source_get_requested_latency_within_thread(u
->source
)) != (pa_usec_t
) -1) {
666 pa_log_debug("latency set to %0.2fms", (double) latency
/ PA_USEC_PER_MSEC
);
668 b
= pa_usec_to_bytes(latency
, &u
->source
->sample_spec
);
670 /* We need at least one sample in our buffer */
672 if (PA_UNLIKELY(b
< u
->frame_size
))
675 u
->hwbuf_unused
= PA_LIKELY(b
< u
->hwbuf_size
) ? (u
->hwbuf_size
- b
) : 0;
678 fix_min_sleep_wakeup(u
);
679 fix_tsched_watermark(u
);
682 pa_log_debug("hwbuf_unused=%lu", (unsigned long) u
->hwbuf_unused
);
687 pa_usec_t sleep_usec
, process_usec
;
689 hw_sleep_time(u
, &sleep_usec
, &process_usec
);
690 avail_min
+= pa_usec_to_bytes(sleep_usec
, &u
->source
->sample_spec
) / u
->frame_size
;
693 pa_log_debug("setting avail_min=%lu", (unsigned long) avail_min
);
695 if ((err
= pa_alsa_set_sw_params(u
->pcm_handle
, avail_min
)) < 0) {
696 pa_log("Failed to set software parameters: %s", snd_strerror(err
));
703 static int unsuspend(struct userdata
*u
) {
708 snd_pcm_uframes_t period_size
;
711 pa_assert(!u
->pcm_handle
);
713 pa_log_info("Trying resume...");
715 snd_config_update_free_global();
717 if ((err
= snd_pcm_open(&u
->pcm_handle
, u
->device_name
, SND_PCM_STREAM_CAPTURE
,
718 /*SND_PCM_NONBLOCK|*/
719 SND_PCM_NO_AUTO_RESAMPLE
|
720 SND_PCM_NO_AUTO_CHANNELS
|
721 SND_PCM_NO_AUTO_FORMAT
)) < 0) {
722 pa_log("Error opening PCM device %s: %s", u
->device_name
, snd_strerror(err
));
726 ss
= u
->source
->sample_spec
;
727 nfrags
= u
->nfragments
;
728 period_size
= u
->fragment_size
/ u
->frame_size
;
732 if ((err
= pa_alsa_set_hw_params(u
->pcm_handle
, &ss
, &nfrags
, &period_size
, u
->hwbuf_size
/ u
->frame_size
, &b
, &d
, TRUE
)) < 0) {
733 pa_log("Failed to set hardware parameters: %s", snd_strerror(err
));
737 if (b
!= u
->use_mmap
|| d
!= u
->use_tsched
) {
738 pa_log_warn("Resume failed, couldn't get original access mode.");
742 if (!pa_sample_spec_equal(&ss
, &u
->source
->sample_spec
)) {
743 pa_log_warn("Resume failed, couldn't restore original sample settings.");
747 if (nfrags
!= u
->nfragments
|| period_size
*u
->frame_size
!= u
->fragment_size
) {
748 pa_log_warn("Resume failed, couldn't restore original fragment settings. (Old: %lu*%lu, New %lu*%lu)",
749 (unsigned long) u
->nfragments
, (unsigned long) u
->fragment_size
,
750 (unsigned long) nfrags
, period_size
* u
->frame_size
);
754 if (update_sw_params(u
) < 0)
757 if (build_pollfd(u
) < 0)
760 /* FIXME: We need to reload the volume somehow */
762 snd_pcm_start(u
->pcm_handle
);
763 pa_smoother_resume(u
->smoother
, pa_rtclock_usec());
765 pa_log_info("Resumed successfully...");
771 snd_pcm_close(u
->pcm_handle
);
772 u
->pcm_handle
= NULL
;
778 static int source_process_msg(pa_msgobject
*o
, int code
, void *data
, int64_t offset
, pa_memchunk
*chunk
) {
779 struct userdata
*u
= PA_SOURCE(o
)->userdata
;
783 case PA_SOURCE_MESSAGE_GET_LATENCY
: {
787 r
= source_get_latency(u
);
789 *((pa_usec_t
*) data
) = r
;
794 case PA_SOURCE_MESSAGE_SET_STATE
:
796 switch ((pa_source_state_t
) PA_PTR_TO_UINT(data
)) {
798 case PA_SOURCE_SUSPENDED
:
799 pa_assert(PA_SOURCE_IS_OPENED(u
->source
->thread_info
.state
));
807 case PA_SOURCE_RUNNING
:
809 if (u
->source
->thread_info
.state
== PA_SOURCE_INIT
) {
810 if (build_pollfd(u
) < 0)
813 snd_pcm_start(u
->pcm_handle
);
816 if (u
->source
->thread_info
.state
== PA_SOURCE_SUSPENDED
) {
817 if (unsuspend(u
) < 0)
823 case PA_SOURCE_UNLINKED
:
825 case PA_SOURCE_INVALID_STATE
:
832 return pa_source_process_msg(o
, code
, data
, offset
, chunk
);
835 /* Called from main context */
836 static int source_set_state_cb(pa_source
*s
, pa_source_state_t new_state
) {
837 pa_source_state_t old_state
;
840 pa_source_assert_ref(s
);
841 pa_assert_se(u
= s
->userdata
);
843 old_state
= pa_source_get_state(u
->source
);
845 if (PA_SINK_IS_OPENED(old_state
) && new_state
== PA_SINK_SUSPENDED
)
847 else if (old_state
== PA_SINK_SUSPENDED
&& PA_SINK_IS_OPENED(new_state
))
848 if (reserve_init(u
, u
->device_name
) < 0)
854 static int mixer_callback(snd_mixer_elem_t
*elem
, unsigned int mask
) {
855 struct userdata
*u
= snd_mixer_elem_get_callback_private(elem
);
858 pa_assert(u
->mixer_handle
);
860 if (mask
== SND_CTL_EVENT_MASK_REMOVE
)
863 if (mask
& SND_CTL_EVENT_MASK_VALUE
) {
864 pa_source_get_volume(u
->source
, TRUE
);
865 pa_source_get_mute(u
->source
, TRUE
);
871 static pa_volume_t
from_alsa_volume(struct userdata
*u
, long alsa_vol
) {
873 return (pa_volume_t
) round(((double) (alsa_vol
- u
->hw_volume_min
) * PA_VOLUME_NORM
) /
874 (double) (u
->hw_volume_max
- u
->hw_volume_min
));
877 static long to_alsa_volume(struct userdata
*u
, pa_volume_t vol
) {
880 alsa_vol
= (long) round(((double) vol
* (double) (u
->hw_volume_max
- u
->hw_volume_min
))
881 / PA_VOLUME_NORM
) + u
->hw_volume_min
;
883 return PA_CLAMP_UNLIKELY(alsa_vol
, u
->hw_volume_min
, u
->hw_volume_max
);
886 static void source_get_volume_cb(pa_source
*s
) {
887 struct userdata
*u
= s
->userdata
;
891 char t
[PA_CVOLUME_SNPRINT_MAX
];
894 pa_assert(u
->mixer_elem
);
896 if (u
->mixer_seperate_channels
) {
898 r
.channels
= s
->sample_spec
.channels
;
900 for (i
= 0; i
< s
->sample_spec
.channels
; i
++) {
903 if (u
->hw_dB_supported
) {
905 if ((err
= snd_mixer_selem_get_capture_dB(u
->mixer_elem
, u
->mixer_map
[i
], &alsa_vol
)) < 0)
908 #ifdef HAVE_VALGRIND_MEMCHECK_H
909 VALGRIND_MAKE_MEM_DEFINED(&alsa_vol
, sizeof(alsa_vol
));
912 r
.values
[i
] = pa_sw_volume_from_dB((double) (alsa_vol
- u
->hw_dB_max
) / 100.0);
915 if ((err
= snd_mixer_selem_get_capture_volume(u
->mixer_elem
, u
->mixer_map
[i
], &alsa_vol
)) < 0)
918 r
.values
[i
] = from_alsa_volume(u
, alsa_vol
);
925 if (u
->hw_dB_supported
) {
927 if ((err
= snd_mixer_selem_get_capture_dB(u
->mixer_elem
, SND_MIXER_SCHN_MONO
, &alsa_vol
)) < 0)
930 #ifdef HAVE_VALGRIND_MEMCHECK_H
931 VALGRIND_MAKE_MEM_DEFINED(&alsa_vol
, sizeof(alsa_vol
));
934 pa_cvolume_set(&r
, s
->sample_spec
.channels
, pa_sw_volume_from_dB((double) (alsa_vol
- u
->hw_dB_max
) / 100.0));
938 if ((err
= snd_mixer_selem_get_capture_volume(u
->mixer_elem
, SND_MIXER_SCHN_MONO
, &alsa_vol
)) < 0)
941 pa_cvolume_set(&r
, s
->sample_spec
.channels
, from_alsa_volume(u
, alsa_vol
));
945 pa_log_debug("Read hardware volume: %s", pa_cvolume_snprint(t
, sizeof(t
), &r
));
947 if (!pa_cvolume_equal(&u
->hardware_volume
, &r
)) {
949 s
->virtual_volume
= u
->hardware_volume
= r
;
951 if (u
->hw_dB_supported
) {
954 /* Hmm, so the hardware volume changed, let's reset our software volume */
955 pa_cvolume_reset(&reset
, s
->sample_spec
.channels
);
956 pa_source_set_soft_volume(s
, &reset
);
963 pa_log_error("Unable to read volume: %s", snd_strerror(err
));
966 static void source_set_volume_cb(pa_source
*s
) {
967 struct userdata
*u
= s
->userdata
;
973 pa_assert(u
->mixer_elem
);
975 if (u
->mixer_seperate_channels
) {
977 r
.channels
= s
->sample_spec
.channels
;
979 for (i
= 0; i
< s
->sample_spec
.channels
; i
++) {
983 vol
= s
->virtual_volume
.values
[i
];
985 if (u
->hw_dB_supported
) {
987 alsa_vol
= (long) (pa_sw_volume_to_dB(vol
) * 100);
988 alsa_vol
+= u
->hw_dB_max
;
989 alsa_vol
= PA_CLAMP_UNLIKELY(alsa_vol
, u
->hw_dB_min
, u
->hw_dB_max
);
991 if ((err
= snd_mixer_selem_set_capture_dB(u
->mixer_elem
, u
->mixer_map
[i
], alsa_vol
, 1)) < 0)
994 if ((err
= snd_mixer_selem_get_capture_dB(u
->mixer_elem
, u
->mixer_map
[i
], &alsa_vol
)) < 0)
997 #ifdef HAVE_VALGRIND_MEMCHECK_H
998 VALGRIND_MAKE_MEM_DEFINED(&alsa_vol
, sizeof(alsa_vol
));
1001 r
.values
[i
] = pa_sw_volume_from_dB((double) (alsa_vol
- u
->hw_dB_max
) / 100.0);
1004 alsa_vol
= to_alsa_volume(u
, vol
);
1006 if ((err
= snd_mixer_selem_set_capture_volume(u
->mixer_elem
, u
->mixer_map
[i
], alsa_vol
)) < 0)
1009 if ((err
= snd_mixer_selem_get_capture_volume(u
->mixer_elem
, u
->mixer_map
[i
], &alsa_vol
)) < 0)
1012 r
.values
[i
] = from_alsa_volume(u
, alsa_vol
);
1020 vol
= pa_cvolume_max(&s
->virtual_volume
);
1022 if (u
->hw_dB_supported
) {
1023 alsa_vol
= (long) (pa_sw_volume_to_dB(vol
) * 100);
1024 alsa_vol
+= u
->hw_dB_max
;
1025 alsa_vol
= PA_CLAMP_UNLIKELY(alsa_vol
, u
->hw_dB_min
, u
->hw_dB_max
);
1027 if ((err
= snd_mixer_selem_set_capture_dB_all(u
->mixer_elem
, alsa_vol
, 1)) < 0)
1030 if ((err
= snd_mixer_selem_get_capture_dB(u
->mixer_elem
, SND_MIXER_SCHN_MONO
, &alsa_vol
)) < 0)
1033 #ifdef HAVE_VALGRIND_MEMCHECK_H
1034 VALGRIND_MAKE_MEM_DEFINED(&alsa_vol
, sizeof(alsa_vol
));
1037 pa_cvolume_set(&r
, s
->sample_spec
.channels
, pa_sw_volume_from_dB((double) (alsa_vol
- u
->hw_dB_max
) / 100.0));
1040 alsa_vol
= to_alsa_volume(u
, vol
);
1042 if ((err
= snd_mixer_selem_set_capture_volume_all(u
->mixer_elem
, alsa_vol
)) < 0)
1045 if ((err
= snd_mixer_selem_get_capture_volume(u
->mixer_elem
, SND_MIXER_SCHN_MONO
, &alsa_vol
)) < 0)
1048 pa_cvolume_set(&r
, s
->sample_spec
.channels
, from_alsa_volume(u
, alsa_vol
));
1052 u
->hardware_volume
= r
;
1054 if (u
->hw_dB_supported
) {
1055 char t
[PA_CVOLUME_SNPRINT_MAX
];
1057 /* Match exactly what the user requested by software */
1059 pa_sw_cvolume_divide(&s
->soft_volume
, &s
->virtual_volume
, &u
->hardware_volume
);
1061 pa_log_debug("Requested volume: %s", pa_cvolume_snprint(t
, sizeof(t
), &s
->virtual_volume
));
1062 pa_log_debug("Got hardware volume: %s", pa_cvolume_snprint(t
, sizeof(t
), &u
->hardware_volume
));
1063 pa_log_debug("Calculated software volume: %s", pa_cvolume_snprint(t
, sizeof(t
), &s
->soft_volume
));
1067 /* We can't match exactly what the user requested, hence let's
1068 * at least tell the user about it */
1070 s
->virtual_volume
= r
;
1075 pa_log_error("Unable to set volume: %s", snd_strerror(err
));
1078 static void source_get_mute_cb(pa_source
*s
) {
1079 struct userdata
*u
= s
->userdata
;
1083 pa_assert(u
->mixer_elem
);
1085 if ((err
= snd_mixer_selem_get_capture_switch(u
->mixer_elem
, 0, &sw
)) < 0) {
1086 pa_log_error("Unable to get switch: %s", snd_strerror(err
));
1093 static void source_set_mute_cb(pa_source
*s
) {
1094 struct userdata
*u
= s
->userdata
;
1098 pa_assert(u
->mixer_elem
);
1100 if ((err
= snd_mixer_selem_set_capture_switch_all(u
->mixer_elem
, !s
->muted
)) < 0) {
1101 pa_log_error("Unable to set switch: %s", snd_strerror(err
));
1106 static void source_update_requested_latency_cb(pa_source
*s
) {
1107 struct userdata
*u
= s
->userdata
;
1113 update_sw_params(u
);
1116 static void thread_func(void *userdata
) {
1117 struct userdata
*u
= userdata
;
1118 unsigned short revents
= 0;
1122 pa_log_debug("Thread starting up");
1124 if (u
->core
->realtime_scheduling
)
1125 pa_make_realtime(u
->core
->realtime_priority
);
1127 pa_thread_mq_install(&u
->thread_mq
);
1128 pa_rtpoll_install(u
->rtpoll
);
1134 pa_log_debug("Loop");
1137 /* Read some data and pass it to the sources */
1138 if (PA_SOURCE_IS_OPENED(u
->source
->thread_info
.state
)) {
1140 pa_usec_t sleep_usec
= 0;
1143 work_done
= mmap_read(u
, &sleep_usec
, revents
& POLLIN
);
1145 work_done
= unix_read(u
, &sleep_usec
, revents
& POLLIN
);
1150 /* pa_log_debug("work_done = %i", work_done); */
1155 if (u
->use_tsched
) {
1158 /* OK, the capture buffer is now empty, let's
1159 * calculate when to wake up next */
1161 /* pa_log_debug("Waking up in %0.2fms (sound card clock).", (double) sleep_usec / PA_USEC_PER_MSEC); */
1163 /* Convert from the sound card time domain to the
1164 * system time domain */
1165 cusec
= pa_smoother_translate(u
->smoother
, pa_rtclock_usec(), sleep_usec
);
1167 /* pa_log_debug("Waking up in %0.2fms (system clock).", (double) cusec / PA_USEC_PER_MSEC); */
1169 /* We don't trust the conversion, so we wake up whatever comes first */
1170 pa_rtpoll_set_timer_relative(u
->rtpoll
, PA_MIN(sleep_usec
, cusec
));
1172 } else if (u
->use_tsched
)
1174 /* OK, we're in an invalid state, let's disable our timers */
1175 pa_rtpoll_set_timer_disabled(u
->rtpoll
);
1177 /* Hmm, nothing to do. Let's sleep */
1178 if ((ret
= pa_rtpoll_run(u
->rtpoll
, TRUE
)) < 0)
1184 /* Tell ALSA about this and process its response */
1185 if (PA_SOURCE_IS_OPENED(u
->source
->thread_info
.state
)) {
1186 struct pollfd
*pollfd
;
1190 pollfd
= pa_rtpoll_item_get_pollfd(u
->alsa_rtpoll_item
, &n
);
1192 if ((err
= snd_pcm_poll_descriptors_revents(u
->pcm_handle
, pollfd
, n
, &revents
)) < 0) {
1193 pa_log("snd_pcm_poll_descriptors_revents() failed: %s", snd_strerror(err
));
1197 if (revents
& ~POLLIN
) {
1198 if (pa_alsa_recover_from_poll(u
->pcm_handle
, revents
) < 0)
1201 snd_pcm_start(u
->pcm_handle
);
1202 } else if (revents
&& u
->use_tsched
&& pa_log_ratelimit())
1203 pa_log_debug("Wakeup from ALSA!");
1210 /* If this was no regular exit from the loop we have to continue
1211 * processing messages until we received PA_MESSAGE_SHUTDOWN */
1212 pa_asyncmsgq_post(u
->thread_mq
.outq
, PA_MSGOBJECT(u
->core
), PA_CORE_MESSAGE_UNLOAD_MODULE
, u
->module
, 0, NULL
, NULL
);
1213 pa_asyncmsgq_wait_for(u
->thread_mq
.inq
, PA_MESSAGE_SHUTDOWN
);
1216 pa_log_debug("Thread shutting down");
1219 static void set_source_name(pa_source_new_data
*data
, pa_modargs
*ma
, const char *device_id
, const char *device_name
) {
1225 pa_assert(device_name
);
1227 if ((n
= pa_modargs_get_value(ma
, "source_name", NULL
))) {
1228 pa_source_new_data_set_name(data
, n
);
1229 data
->namereg_fail
= TRUE
;
1233 if ((n
= pa_modargs_get_value(ma
, "name", NULL
)))
1234 data
->namereg_fail
= TRUE
;
1236 n
= device_id
? device_id
: device_name
;
1237 data
->namereg_fail
= FALSE
;
1240 t
= pa_sprintf_malloc("alsa_input.%s", n
);
1241 pa_source_new_data_set_name(data
, t
);
1245 static int setup_mixer(struct userdata
*u
, pa_bool_t ignore_dB
) {
1248 if (!u
->mixer_handle
)
1251 pa_assert(u
->mixer_elem
);
1253 if (snd_mixer_selem_has_capture_volume(u
->mixer_elem
)) {
1254 pa_bool_t suitable
= FALSE
;
1256 if (snd_mixer_selem_get_capture_volume_range(u
->mixer_elem
, &u
->hw_volume_min
, &u
->hw_volume_max
) < 0)
1257 pa_log_info("Failed to get volume range. Falling back to software volume control.");
1258 else if (u
->hw_volume_min
>= u
->hw_volume_max
)
1259 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
);
1261 pa_log_info("Volume ranges from %li to %li.", u
->hw_volume_min
, u
->hw_volume_max
);
1266 if (ignore_dB
|| snd_mixer_selem_get_capture_dB_range(u
->mixer_elem
, &u
->hw_dB_min
, &u
->hw_dB_max
) < 0)
1267 pa_log_info("Mixer doesn't support dB information or data is ignored.");
1269 #ifdef HAVE_VALGRIND_MEMCHECK_H
1270 VALGRIND_MAKE_MEM_DEFINED(&u
->hw_dB_min
, sizeof(u
->hw_dB_min
));
1271 VALGRIND_MAKE_MEM_DEFINED(&u
->hw_dB_max
, sizeof(u
->hw_dB_max
));
1274 if (u
->hw_dB_min
>= u
->hw_dB_max
)
1275 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);
1277 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);
1278 u
->hw_dB_supported
= TRUE
;
1280 if (u
->hw_dB_max
> 0) {
1281 u
->source
->base_volume
= pa_sw_volume_from_dB(- (double) u
->hw_dB_max
/100.0);
1282 pa_log_info("Fixing base volume to %0.2f dB", pa_sw_volume_to_dB(u
->source
->base_volume
));
1284 pa_log_info("No particular base volume set, fixing to 0 dB");
1288 if (!u
->hw_dB_supported
&&
1289 u
->hw_volume_max
- u
->hw_volume_min
< 3) {
1291 pa_log_info("Device has less than 4 volume levels. Falling back to software volume control.");
1297 u
->mixer_seperate_channels
= pa_alsa_calc_mixer_map(u
->mixer_elem
, &u
->source
->channel_map
, u
->mixer_map
, FALSE
) >= 0;
1299 u
->source
->get_volume
= source_get_volume_cb
;
1300 u
->source
->set_volume
= source_set_volume_cb
;
1301 u
->source
->flags
|= PA_SOURCE_HW_VOLUME_CTRL
| (u
->hw_dB_supported
? PA_SOURCE_DECIBEL_VOLUME
: 0);
1302 pa_log_info("Using hardware volume control. Hardware dB scale %s.", u
->hw_dB_supported
? "supported" : "not supported");
1304 if (!u
->hw_dB_supported
)
1305 u
->source
->n_volume_steps
= u
->hw_volume_max
- u
->hw_volume_min
+ 1;
1307 pa_log_info("Using software volume control.");
1310 if (snd_mixer_selem_has_capture_switch(u
->mixer_elem
)) {
1311 u
->source
->get_mute
= source_get_mute_cb
;
1312 u
->source
->set_mute
= source_set_mute_cb
;
1313 u
->source
->flags
|= PA_SOURCE_HW_MUTE_CTRL
;
1315 pa_log_info("Using software mute control.");
1317 u
->mixer_fdl
= pa_alsa_fdlist_new();
1319 if (pa_alsa_fdlist_set_mixer(u
->mixer_fdl
, u
->mixer_handle
, u
->core
->mainloop
) < 0) {
1320 pa_log("Failed to initialize file descriptor monitoring");
1324 snd_mixer_elem_set_callback(u
->mixer_elem
, mixer_callback
);
1325 snd_mixer_elem_set_callback_private(u
->mixer_elem
, u
);
1330 pa_source
*pa_alsa_source_new(pa_module
*m
, pa_modargs
*ma
, const char*driver
, pa_card
*card
, const pa_alsa_profile_info
*profile
) {
1332 struct userdata
*u
= NULL
;
1333 const char *dev_id
= NULL
;
1336 uint32_t nfrags
, hwbuf_size
, frag_size
, tsched_size
, tsched_watermark
;
1337 snd_pcm_uframes_t period_frames
, tsched_frames
;
1339 pa_bool_t use_mmap
= TRUE
, b
, use_tsched
= TRUE
, d
, ignore_dB
= FALSE
;
1340 pa_source_new_data data
;
1345 ss
= m
->core
->default_sample_spec
;
1346 map
= m
->core
->default_channel_map
;
1347 if (pa_modargs_get_sample_spec_and_channel_map(ma
, &ss
, &map
, PA_CHANNEL_MAP_ALSA
) < 0) {
1348 pa_log("Failed to parse sample specification");
1352 frame_size
= pa_frame_size(&ss
);
1354 nfrags
= m
->core
->default_n_fragments
;
1355 frag_size
= (uint32_t) pa_usec_to_bytes(m
->core
->default_fragment_size_msec
*PA_USEC_PER_MSEC
, &ss
);
1357 frag_size
= (uint32_t) frame_size
;
1358 tsched_size
= (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_BUFFER_USEC
, &ss
);
1359 tsched_watermark
= (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_WATERMARK_USEC
, &ss
);
1361 if (pa_modargs_get_value_u32(ma
, "fragments", &nfrags
) < 0 ||
1362 pa_modargs_get_value_u32(ma
, "fragment_size", &frag_size
) < 0 ||
1363 pa_modargs_get_value_u32(ma
, "tsched_buffer_size", &tsched_size
) < 0 ||
1364 pa_modargs_get_value_u32(ma
, "tsched_buffer_watermark", &tsched_watermark
) < 0) {
1365 pa_log("Failed to parse buffer metrics");
1369 hwbuf_size
= frag_size
* nfrags
;
1370 period_frames
= frag_size
/frame_size
;
1371 tsched_frames
= tsched_size
/frame_size
;
1373 if (pa_modargs_get_value_boolean(ma
, "mmap", &use_mmap
) < 0) {
1374 pa_log("Failed to parse mmap argument.");
1378 if (pa_modargs_get_value_boolean(ma
, "tsched", &use_tsched
) < 0) {
1379 pa_log("Failed to parse timer_scheduling argument.");
1383 if (pa_modargs_get_value_boolean(ma
, "ignore_dB", &ignore_dB
) < 0) {
1384 pa_log("Failed to parse ignore_dB argument.");
1388 if (use_tsched
&& !pa_rtclock_hrtimer()) {
1389 pa_log_notice("Disabling timer-based scheduling because high-resolution timers are not available from the kernel.");
1393 u
= pa_xnew0(struct userdata
, 1);
1396 u
->use_mmap
= use_mmap
;
1397 u
->use_tsched
= use_tsched
;
1398 u
->rtpoll
= pa_rtpoll_new();
1399 pa_thread_mq_init(&u
->thread_mq
, m
->core
->mainloop
, u
->rtpoll
);
1400 u
->alsa_rtpoll_item
= NULL
;
1402 u
->smoother
= pa_smoother_new(DEFAULT_TSCHED_WATERMARK_USEC
*2, DEFAULT_TSCHED_WATERMARK_USEC
*2, TRUE
, 5);
1403 pa_smoother_set_time_offset(u
->smoother
, pa_rtclock_usec());
1405 if (reserve_init(u
, pa_modargs_get_value(
1407 pa_modargs_get_value(ma
, "device", DEFAULT_DEVICE
))) < 0)
1415 if (!(dev_id
= pa_modargs_get_value(ma
, "device_id", NULL
))) {
1416 pa_log("device_id= not set");
1420 if (!(u
->pcm_handle
= pa_alsa_open_by_device_id_profile(
1424 SND_PCM_STREAM_CAPTURE
,
1425 &nfrags
, &period_frames
, tsched_frames
,
1429 } else if ((dev_id
= pa_modargs_get_value(ma
, "device_id", NULL
))) {
1431 if (!(u
->pcm_handle
= pa_alsa_open_by_device_id_auto(
1435 SND_PCM_STREAM_CAPTURE
,
1436 &nfrags
, &period_frames
, tsched_frames
,
1442 if (!(u
->pcm_handle
= pa_alsa_open_by_device_string(
1443 pa_modargs_get_value(ma
, "device", DEFAULT_DEVICE
),
1446 SND_PCM_STREAM_CAPTURE
,
1447 &nfrags
, &period_frames
, tsched_frames
,
1452 pa_assert(u
->device_name
);
1453 pa_log_info("Successfully opened device %s.", u
->device_name
);
1456 pa_log_info("Selected configuration '%s' (%s).", profile
->description
, profile
->name
);
1458 if (use_mmap
&& !b
) {
1459 pa_log_info("Device doesn't support mmap(), falling back to UNIX read/write mode.");
1460 u
->use_mmap
= use_mmap
= FALSE
;
1463 if (use_tsched
&& (!b
|| !d
)) {
1464 pa_log_info("Cannot enable timer-based scheduling, falling back to sound IRQ scheduling.");
1465 u
->use_tsched
= use_tsched
= FALSE
;
1469 pa_log_info("Successfully enabled mmap() mode.");
1472 pa_log_info("Successfully enabled timer-based scheduling mode.");
1474 /* ALSA might tweak the sample spec, so recalculate the frame size */
1475 frame_size
= pa_frame_size(&ss
);
1477 pa_alsa_find_mixer_and_elem(u
->pcm_handle
, &u
->mixer_handle
, &u
->mixer_elem
);
1479 pa_source_new_data_init(&data
);
1480 data
.driver
= driver
;
1483 set_source_name(&data
, ma
, dev_id
, u
->device_name
);
1484 pa_source_new_data_set_sample_spec(&data
, &ss
);
1485 pa_source_new_data_set_channel_map(&data
, &map
);
1487 pa_alsa_init_proplist_pcm(m
->core
, data
.proplist
, u
->pcm_handle
);
1488 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_STRING
, u
->device_name
);
1489 pa_proplist_setf(data
.proplist
, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE
, "%lu", (unsigned long) (period_frames
* frame_size
* nfrags
));
1490 pa_proplist_setf(data
.proplist
, PA_PROP_DEVICE_BUFFERING_FRAGMENT_SIZE
, "%lu", (unsigned long) (period_frames
* frame_size
));
1491 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_ACCESS_MODE
, u
->use_tsched
? "mmap+timer" : (u
->use_mmap
? "mmap" : "serial"));
1494 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_PROFILE_NAME
, profile
->name
);
1495 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_PROFILE_DESCRIPTION
, profile
->description
);
1498 u
->source
= pa_source_new(m
->core
, &data
, PA_SOURCE_HARDWARE
|PA_SOURCE_LATENCY
);
1499 pa_source_new_data_done(&data
);
1502 pa_log("Failed to create source object");
1506 u
->source
->parent
.process_msg
= source_process_msg
;
1507 u
->source
->update_requested_latency
= source_update_requested_latency_cb
;
1508 u
->source
->set_state
= source_set_state_cb
;
1509 u
->source
->userdata
= u
;
1511 pa_source_set_asyncmsgq(u
->source
, u
->thread_mq
.inq
);
1512 pa_source_set_rtpoll(u
->source
, u
->rtpoll
);
1514 u
->frame_size
= frame_size
;
1515 u
->fragment_size
= frag_size
= (uint32_t) (period_frames
* frame_size
);
1516 u
->nfragments
= nfrags
;
1517 u
->hwbuf_size
= u
->fragment_size
* nfrags
;
1518 u
->tsched_watermark
= tsched_watermark
;
1519 pa_cvolume_mute(&u
->hardware_volume
, u
->source
->sample_spec
.channels
);
1522 fix_min_sleep_wakeup(u
);
1523 fix_tsched_watermark(u
);
1526 pa_source_set_latency_range(u
->source
,
1527 !use_tsched
? pa_bytes_to_usec(u
->hwbuf_size
, &ss
) : (pa_usec_t
) -1,
1528 pa_bytes_to_usec(u
->hwbuf_size
, &ss
));
1530 pa_log_info("Using %u fragments of size %lu bytes, buffer time is %0.2fms",
1531 nfrags
, (long unsigned) u
->fragment_size
,
1532 (double) pa_bytes_to_usec(u
->hwbuf_size
, &ss
) / PA_USEC_PER_MSEC
);
1535 pa_log_info("Time scheduling watermark is %0.2fms",
1536 (double) pa_bytes_to_usec(u
->tsched_watermark
, &ss
) / PA_USEC_PER_MSEC
);
1540 if (update_sw_params(u
) < 0)
1543 if (setup_mixer(u
, ignore_dB
) < 0)
1546 pa_alsa_dump(u
->pcm_handle
);
1548 if (!(u
->thread
= pa_thread_new(thread_func
, u
))) {
1549 pa_log("Failed to create thread.");
1552 /* Get initial mixer settings */
1553 if (data
.volume_is_set
) {
1554 if (u
->source
->set_volume
)
1555 u
->source
->set_volume(u
->source
);
1557 if (u
->source
->get_volume
)
1558 u
->source
->get_volume(u
->source
);
1561 if (data
.muted_is_set
) {
1562 if (u
->source
->set_mute
)
1563 u
->source
->set_mute(u
->source
);
1565 if (u
->source
->get_mute
)
1566 u
->source
->get_mute(u
->source
);
1569 pa_source_put(u
->source
);
1580 static void userdata_free(struct userdata
*u
) {
1584 pa_source_unlink(u
->source
);
1587 pa_asyncmsgq_send(u
->thread_mq
.inq
, NULL
, PA_MESSAGE_SHUTDOWN
, NULL
, 0, NULL
);
1588 pa_thread_free(u
->thread
);
1591 pa_thread_mq_done(&u
->thread_mq
);
1594 pa_source_unref(u
->source
);
1596 if (u
->alsa_rtpoll_item
)
1597 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
1600 pa_rtpoll_free(u
->rtpoll
);
1603 pa_alsa_fdlist_free(u
->mixer_fdl
);
1605 if (u
->mixer_handle
)
1606 snd_mixer_close(u
->mixer_handle
);
1608 if (u
->pcm_handle
) {
1609 snd_pcm_drop(u
->pcm_handle
);
1610 snd_pcm_close(u
->pcm_handle
);
1614 pa_smoother_free(u
->smoother
);
1618 pa_xfree(u
->device_name
);
1622 void pa_alsa_source_free(pa_source
*s
) {
1625 pa_source_assert_ref(s
);
1626 pa_assert_se(u
= s
->userdata
);