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
29 #include <asoundlib.h>
31 #include <pulse/rtclock.h>
32 #include <pulse/timeval.h>
33 #include <pulse/volume.h>
34 #include <pulse/xmalloc.h>
36 #include <pulsecore/core.h>
37 #include <pulsecore/i18n.h>
38 #include <pulsecore/module.h>
39 #include <pulsecore/memchunk.h>
40 #include <pulsecore/sink.h>
41 #include <pulsecore/modargs.h>
42 #include <pulsecore/core-rtclock.h>
43 #include <pulsecore/core-util.h>
44 #include <pulsecore/sample-util.h>
45 #include <pulsecore/log.h>
46 #include <pulsecore/macro.h>
47 #include <pulsecore/thread.h>
48 #include <pulsecore/thread-mq.h>
49 #include <pulsecore/rtpoll.h>
50 #include <pulsecore/time-smoother.h>
52 #include <modules/reserve-wrap.h>
54 #include "alsa-util.h"
55 #include "alsa-source.h"
57 /* #define DEBUG_TIMING */
59 #define DEFAULT_DEVICE "default"
61 #define DEFAULT_TSCHED_BUFFER_USEC (2*PA_USEC_PER_SEC) /* 2s */
62 #define DEFAULT_TSCHED_WATERMARK_USEC (20*PA_USEC_PER_MSEC) /* 20ms */
64 #define TSCHED_WATERMARK_INC_STEP_USEC (10*PA_USEC_PER_MSEC) /* 10ms */
65 #define TSCHED_WATERMARK_DEC_STEP_USEC (5*PA_USEC_PER_MSEC) /* 5ms */
66 #define TSCHED_WATERMARK_VERIFY_AFTER_USEC (20*PA_USEC_PER_SEC) /* 20s */
67 #define TSCHED_WATERMARK_INC_THRESHOLD_USEC (0*PA_USEC_PER_MSEC) /* 0ms */
68 #define TSCHED_WATERMARK_DEC_THRESHOLD_USEC (100*PA_USEC_PER_MSEC) /* 100ms */
69 #define TSCHED_WATERMARK_STEP_USEC (10*PA_USEC_PER_MSEC) /* 10ms */
71 #define TSCHED_MIN_SLEEP_USEC (10*PA_USEC_PER_MSEC) /* 10ms */
72 #define TSCHED_MIN_WAKEUP_USEC (4*PA_USEC_PER_MSEC) /* 4ms */
74 #define SMOOTHER_WINDOW_USEC (10*PA_USEC_PER_SEC) /* 10s */
75 #define SMOOTHER_ADJUST_USEC (1*PA_USEC_PER_SEC) /* 1s */
77 #define SMOOTHER_MIN_INTERVAL (2*PA_USEC_PER_MSEC) /* 2ms */
78 #define SMOOTHER_MAX_INTERVAL (200*PA_USEC_PER_MSEC) /* 200ms */
80 #define VOLUME_ACCURACY (PA_VOLUME_NORM/100)
88 pa_thread_mq thread_mq
;
91 snd_pcm_t
*pcm_handle
;
94 pa_alsa_fdlist
*mixer_fdl
;
95 pa_alsa_mixer_pdata
*mixer_pd
;
96 snd_mixer_t
*mixer_handle
;
97 pa_alsa_path_set
*mixer_path_set
;
98 pa_alsa_path
*mixer_path
;
100 pa_cvolume hardware_volume
;
109 tsched_watermark_ref
,
115 watermark_inc_threshold
,
116 watermark_dec_threshold
;
118 pa_usec_t watermark_dec_not_before
;
119 pa_usec_t min_latency_ref
;
121 char *device_name
; /* name of the PCM device */
122 char *control_device
; /* name of the control device */
124 pa_bool_t use_mmap
:1, use_tsched
:1, deferred_volume
:1;
128 pa_rtpoll_item
*alsa_rtpoll_item
;
130 snd_mixer_selem_channel_id_t mixer_map
[SND_MIXER_SCHN_LAST
];
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 static void userdata_free(struct userdata
*u
);
145 static pa_hook_result_t
reserve_cb(pa_reserve_wrapper
*r
, void *forced
, struct userdata
*u
) {
149 if (pa_source_suspend(u
->source
, TRUE
, PA_SUSPEND_APPLICATION
) < 0)
150 return PA_HOOK_CANCEL
;
155 static void reserve_done(struct userdata
*u
) {
158 if (u
->reserve_slot
) {
159 pa_hook_slot_free(u
->reserve_slot
);
160 u
->reserve_slot
= NULL
;
164 pa_reserve_wrapper_unref(u
->reserve
);
169 static void reserve_update(struct userdata
*u
) {
170 const char *description
;
173 if (!u
->source
|| !u
->reserve
)
176 if ((description
= pa_proplist_gets(u
->source
->proplist
, PA_PROP_DEVICE_DESCRIPTION
)))
177 pa_reserve_wrapper_set_application_device_name(u
->reserve
, description
);
180 static int reserve_init(struct userdata
*u
, const char *dname
) {
189 if (pa_in_system_mode())
192 if (!(rname
= pa_alsa_get_reserve_name(dname
)))
195 /* We are resuming, try to lock the device */
196 u
->reserve
= pa_reserve_wrapper_get(u
->core
, rname
);
204 pa_assert(!u
->reserve_slot
);
205 u
->reserve_slot
= pa_hook_connect(pa_reserve_wrapper_hook(u
->reserve
), PA_HOOK_NORMAL
, (pa_hook_cb_t
) reserve_cb
, u
);
210 static pa_hook_result_t
monitor_cb(pa_reserve_monitor_wrapper
*w
, void* busy
, struct userdata
*u
) {
216 b
= PA_PTR_TO_UINT(busy
) && !u
->reserve
;
218 pa_source_suspend(u
->source
, b
, PA_SUSPEND_APPLICATION
);
222 static void monitor_done(struct userdata
*u
) {
225 if (u
->monitor_slot
) {
226 pa_hook_slot_free(u
->monitor_slot
);
227 u
->monitor_slot
= NULL
;
231 pa_reserve_monitor_wrapper_unref(u
->monitor
);
236 static int reserve_monitor_init(struct userdata
*u
, const char *dname
) {
242 if (pa_in_system_mode())
245 if (!(rname
= pa_alsa_get_reserve_name(dname
)))
248 /* We are resuming, try to lock the device */
249 u
->monitor
= pa_reserve_monitor_wrapper_get(u
->core
, rname
);
255 pa_assert(!u
->monitor_slot
);
256 u
->monitor_slot
= pa_hook_connect(pa_reserve_monitor_wrapper_hook(u
->monitor
), PA_HOOK_NORMAL
, (pa_hook_cb_t
) monitor_cb
, u
);
261 static void fix_min_sleep_wakeup(struct userdata
*u
) {
262 size_t max_use
, max_use_2
;
265 pa_assert(u
->use_tsched
);
267 max_use
= u
->hwbuf_size
- u
->hwbuf_unused
;
268 max_use_2
= pa_frame_align(max_use
/2, &u
->source
->sample_spec
);
270 u
->min_sleep
= pa_usec_to_bytes(TSCHED_MIN_SLEEP_USEC
, &u
->source
->sample_spec
);
271 u
->min_sleep
= PA_CLAMP(u
->min_sleep
, u
->frame_size
, max_use_2
);
273 u
->min_wakeup
= pa_usec_to_bytes(TSCHED_MIN_WAKEUP_USEC
, &u
->source
->sample_spec
);
274 u
->min_wakeup
= PA_CLAMP(u
->min_wakeup
, u
->frame_size
, max_use_2
);
277 static void fix_tsched_watermark(struct userdata
*u
) {
280 pa_assert(u
->use_tsched
);
282 max_use
= u
->hwbuf_size
- u
->hwbuf_unused
;
284 if (u
->tsched_watermark
> max_use
- u
->min_sleep
)
285 u
->tsched_watermark
= max_use
- u
->min_sleep
;
287 if (u
->tsched_watermark
< u
->min_wakeup
)
288 u
->tsched_watermark
= u
->min_wakeup
;
291 static void increase_watermark(struct userdata
*u
) {
292 size_t old_watermark
;
293 pa_usec_t old_min_latency
, new_min_latency
;
296 pa_assert(u
->use_tsched
);
298 /* First, just try to increase the watermark */
299 old_watermark
= u
->tsched_watermark
;
300 u
->tsched_watermark
= PA_MIN(u
->tsched_watermark
* 2, u
->tsched_watermark
+ u
->watermark_inc_step
);
301 fix_tsched_watermark(u
);
303 if (old_watermark
!= u
->tsched_watermark
) {
304 pa_log_info("Increasing wakeup watermark to %0.2f ms",
305 (double) pa_bytes_to_usec(u
->tsched_watermark
, &u
->source
->sample_spec
) / PA_USEC_PER_MSEC
);
309 /* Hmm, we cannot increase the watermark any further, hence let's raise the latency */
310 old_min_latency
= u
->source
->thread_info
.min_latency
;
311 new_min_latency
= PA_MIN(old_min_latency
* 2, old_min_latency
+ TSCHED_WATERMARK_INC_STEP_USEC
);
312 new_min_latency
= PA_MIN(new_min_latency
, u
->source
->thread_info
.max_latency
);
314 if (old_min_latency
!= new_min_latency
) {
315 pa_log_info("Increasing minimal latency to %0.2f ms",
316 (double) new_min_latency
/ PA_USEC_PER_MSEC
);
318 pa_source_set_latency_range_within_thread(u
->source
, new_min_latency
, u
->source
->thread_info
.max_latency
);
321 /* When we reach this we're officialy fucked! */
324 static void decrease_watermark(struct userdata
*u
) {
325 size_t old_watermark
;
329 pa_assert(u
->use_tsched
);
331 now
= pa_rtclock_now();
333 if (u
->watermark_dec_not_before
<= 0)
336 if (u
->watermark_dec_not_before
> now
)
339 old_watermark
= u
->tsched_watermark
;
341 if (u
->tsched_watermark
< u
->watermark_dec_step
)
342 u
->tsched_watermark
= u
->tsched_watermark
/ 2;
344 u
->tsched_watermark
= PA_MAX(u
->tsched_watermark
/ 2, u
->tsched_watermark
- u
->watermark_dec_step
);
346 fix_tsched_watermark(u
);
348 if (old_watermark
!= u
->tsched_watermark
)
349 pa_log_info("Decreasing wakeup watermark to %0.2f ms",
350 (double) pa_bytes_to_usec(u
->tsched_watermark
, &u
->source
->sample_spec
) / PA_USEC_PER_MSEC
);
352 /* We don't change the latency range*/
355 u
->watermark_dec_not_before
= now
+ TSCHED_WATERMARK_VERIFY_AFTER_USEC
;
358 static void hw_sleep_time(struct userdata
*u
, pa_usec_t
*sleep_usec
, pa_usec_t
*process_usec
) {
361 pa_assert(sleep_usec
);
362 pa_assert(process_usec
);
365 pa_assert(u
->use_tsched
);
367 usec
= pa_source_get_requested_latency_within_thread(u
->source
);
369 if (usec
== (pa_usec_t
) -1)
370 usec
= pa_bytes_to_usec(u
->hwbuf_size
, &u
->source
->sample_spec
);
372 wm
= pa_bytes_to_usec(u
->tsched_watermark
, &u
->source
->sample_spec
);
377 *sleep_usec
= usec
- wm
;
381 pa_log_debug("Buffer time: %lu ms; Sleep time: %lu ms; Process time: %lu ms",
382 (unsigned long) (usec
/ PA_USEC_PER_MSEC
),
383 (unsigned long) (*sleep_usec
/ PA_USEC_PER_MSEC
),
384 (unsigned long) (*process_usec
/ PA_USEC_PER_MSEC
));
388 static int try_recover(struct userdata
*u
, const char *call
, int err
) {
393 pa_log_debug("%s: %s", call
, pa_alsa_strerror(err
));
395 pa_assert(err
!= -EAGAIN
);
398 pa_log_debug("%s: Buffer overrun!", call
);
400 if (err
== -ESTRPIPE
)
401 pa_log_debug("%s: System suspended!", call
);
403 if ((err
= snd_pcm_recover(u
->pcm_handle
, err
, 1)) < 0) {
404 pa_log("%s: %s", call
, pa_alsa_strerror(err
));
412 static size_t check_left_to_record(struct userdata
*u
, size_t n_bytes
, pa_bool_t on_timeout
) {
413 size_t left_to_record
;
414 size_t rec_space
= u
->hwbuf_size
- u
->hwbuf_unused
;
415 pa_bool_t overrun
= FALSE
;
417 /* We use <= instead of < for this check here because an overrun
418 * only happens after the last sample was processed, not already when
419 * it is removed from the buffer. This is particularly important
420 * when block transfer is used. */
422 if (n_bytes
<= rec_space
)
423 left_to_record
= rec_space
- n_bytes
;
426 /* We got a dropout. What a mess! */
434 if (pa_log_ratelimit(PA_LOG_INFO
))
435 pa_log_info("Overrun!");
439 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
);
443 pa_bool_t reset_not_before
= TRUE
;
445 if (overrun
|| left_to_record
< u
->watermark_inc_threshold
)
446 increase_watermark(u
);
447 else if (left_to_record
> u
->watermark_dec_threshold
) {
448 reset_not_before
= FALSE
;
450 /* We decrease the watermark only if have actually
451 * been woken up by a timeout. If something else woke
452 * us up it's too easy to fulfill the deadlines... */
455 decrease_watermark(u
);
458 if (reset_not_before
)
459 u
->watermark_dec_not_before
= 0;
462 return left_to_record
;
465 static int mmap_read(struct userdata
*u
, pa_usec_t
*sleep_usec
, pa_bool_t polled
, pa_bool_t on_timeout
) {
466 pa_bool_t work_done
= FALSE
;
467 pa_usec_t max_sleep_usec
= 0, process_usec
= 0;
468 size_t left_to_record
;
472 pa_source_assert_ref(u
->source
);
475 hw_sleep_time(u
, &max_sleep_usec
, &process_usec
);
481 pa_bool_t after_avail
= TRUE
;
483 if (PA_UNLIKELY((n
= pa_alsa_safe_avail(u
->pcm_handle
, u
->hwbuf_size
, &u
->source
->sample_spec
)) < 0)) {
485 if ((r
= try_recover(u
, "snd_pcm_avail", (int) n
)) == 0)
491 n_bytes
= (size_t) n
* u
->frame_size
;
494 pa_log_debug("avail: %lu", (unsigned long) n_bytes
);
497 left_to_record
= check_left_to_record(u
, n_bytes
, on_timeout
);
502 pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
) > process_usec
+max_sleep_usec
/2) {
504 pa_log_debug("Not reading, because too early.");
509 if (PA_UNLIKELY(n_bytes
<= 0)) {
513 char *dn
= pa_alsa_get_driver_name_by_pcm(u
->pcm_handle
);
514 pa_log(_("ALSA woke us up to read new data from the device, but there was actually nothing to read!\n"
515 "Most likely this is a bug in the ALSA driver '%s'. Please report this issue to the ALSA developers.\n"
516 "We were woken up with POLLIN set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail."),
522 pa_log_debug("Not reading, because not necessary.");
530 pa_log_debug("Not filling up, because already too many iterations.");
539 pa_log_debug("Reading");
546 const snd_pcm_channel_area_t
*areas
;
547 snd_pcm_uframes_t offset
, frames
;
548 snd_pcm_sframes_t sframes
;
550 frames
= (snd_pcm_uframes_t
) (n_bytes
/ u
->frame_size
);
551 /* pa_log_debug("%lu frames to read", (unsigned long) frames); */
553 if (PA_UNLIKELY((err
= pa_alsa_safe_mmap_begin(u
->pcm_handle
, &areas
, &offset
, &frames
, u
->hwbuf_size
, &u
->source
->sample_spec
)) < 0)) {
555 if (!after_avail
&& err
== -EAGAIN
)
558 if ((r
= try_recover(u
, "snd_pcm_mmap_begin", err
)) == 0)
564 /* Make sure that if these memblocks need to be copied they will fit into one slot */
565 if (frames
> pa_mempool_block_size_max(u
->core
->mempool
)/u
->frame_size
)
566 frames
= pa_mempool_block_size_max(u
->core
->mempool
)/u
->frame_size
;
568 if (!after_avail
&& frames
== 0)
571 pa_assert(frames
> 0);
574 /* Check these are multiples of 8 bit */
575 pa_assert((areas
[0].first
& 7) == 0);
576 pa_assert((areas
[0].step
& 7)== 0);
578 /* We assume a single interleaved memory buffer */
579 pa_assert((areas
[0].first
>> 3) == 0);
580 pa_assert((areas
[0].step
>> 3) == u
->frame_size
);
582 p
= (uint8_t*) areas
[0].addr
+ (offset
* u
->frame_size
);
584 chunk
.memblock
= pa_memblock_new_fixed(u
->core
->mempool
, p
, frames
* u
->frame_size
, TRUE
);
585 chunk
.length
= pa_memblock_get_length(chunk
.memblock
);
588 pa_source_post(u
->source
, &chunk
);
589 pa_memblock_unref_fixed(chunk
.memblock
);
591 if (PA_UNLIKELY((sframes
= snd_pcm_mmap_commit(u
->pcm_handle
, offset
, frames
)) < 0)) {
593 if ((r
= try_recover(u
, "snd_pcm_mmap_commit", (int) sframes
)) == 0)
601 u
->read_count
+= frames
* u
->frame_size
;
604 pa_log_debug("Read %lu bytes (of possible %lu bytes)", (unsigned long) (frames
* u
->frame_size
), (unsigned long) n_bytes
);
607 if ((size_t) frames
* u
->frame_size
>= n_bytes
)
610 n_bytes
-= (size_t) frames
* u
->frame_size
;
615 *sleep_usec
= pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
);
616 process_usec
= pa_bytes_to_usec(u
->tsched_watermark
, &u
->source
->sample_spec
);
618 if (*sleep_usec
> process_usec
)
619 *sleep_usec
-= process_usec
;
624 return work_done
? 1 : 0;
627 static int unix_read(struct userdata
*u
, pa_usec_t
*sleep_usec
, pa_bool_t polled
, pa_bool_t on_timeout
) {
628 int work_done
= FALSE
;
629 pa_usec_t max_sleep_usec
= 0, process_usec
= 0;
630 size_t left_to_record
;
634 pa_source_assert_ref(u
->source
);
637 hw_sleep_time(u
, &max_sleep_usec
, &process_usec
);
643 pa_bool_t after_avail
= TRUE
;
645 if (PA_UNLIKELY((n
= pa_alsa_safe_avail(u
->pcm_handle
, u
->hwbuf_size
, &u
->source
->sample_spec
)) < 0)) {
647 if ((r
= try_recover(u
, "snd_pcm_avail", (int) n
)) == 0)
653 n_bytes
= (size_t) n
* u
->frame_size
;
654 left_to_record
= check_left_to_record(u
, n_bytes
, on_timeout
);
659 pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
) > process_usec
+max_sleep_usec
/2)
662 if (PA_UNLIKELY(n_bytes
<= 0)) {
666 char *dn
= pa_alsa_get_driver_name_by_pcm(u
->pcm_handle
);
667 pa_log(_("ALSA woke us up to read new data from the device, but there was actually nothing to read!\n"
668 "Most likely this is a bug in the ALSA driver '%s'. Please report this issue to the ALSA developers.\n"
669 "We were woken up with POLLIN set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail."),
679 pa_log_debug("Not filling up, because already too many iterations.");
689 snd_pcm_sframes_t frames
;
692 chunk
.memblock
= pa_memblock_new(u
->core
->mempool
, (size_t) -1);
694 frames
= (snd_pcm_sframes_t
) (pa_memblock_get_length(chunk
.memblock
) / u
->frame_size
);
696 if (frames
> (snd_pcm_sframes_t
) (n_bytes
/u
->frame_size
))
697 frames
= (snd_pcm_sframes_t
) (n_bytes
/u
->frame_size
);
699 /* pa_log_debug("%lu frames to read", (unsigned long) n); */
701 p
= pa_memblock_acquire(chunk
.memblock
);
702 frames
= snd_pcm_readi(u
->pcm_handle
, (uint8_t*) p
, (snd_pcm_uframes_t
) frames
);
703 pa_memblock_release(chunk
.memblock
);
705 if (PA_UNLIKELY(frames
< 0)) {
706 pa_memblock_unref(chunk
.memblock
);
708 if (!after_avail
&& (int) frames
== -EAGAIN
)
711 if ((r
= try_recover(u
, "snd_pcm_readi", (int) frames
)) == 0)
717 if (!after_avail
&& frames
== 0) {
718 pa_memblock_unref(chunk
.memblock
);
722 pa_assert(frames
> 0);
726 chunk
.length
= (size_t) frames
* u
->frame_size
;
728 pa_source_post(u
->source
, &chunk
);
729 pa_memblock_unref(chunk
.memblock
);
733 u
->read_count
+= frames
* u
->frame_size
;
735 /* pa_log_debug("read %lu frames", (unsigned long) frames); */
737 if ((size_t) frames
* u
->frame_size
>= n_bytes
)
740 n_bytes
-= (size_t) frames
* u
->frame_size
;
745 *sleep_usec
= pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
);
746 process_usec
= pa_bytes_to_usec(u
->tsched_watermark
, &u
->source
->sample_spec
);
748 if (*sleep_usec
> process_usec
)
749 *sleep_usec
-= process_usec
;
754 return work_done
? 1 : 0;
757 static void update_smoother(struct userdata
*u
) {
758 snd_pcm_sframes_t delay
= 0;
761 pa_usec_t now1
= 0, now2
;
762 snd_pcm_status_t
*status
;
764 snd_pcm_status_alloca(&status
);
767 pa_assert(u
->pcm_handle
);
769 /* Let's update the time smoother */
771 if (PA_UNLIKELY((err
= pa_alsa_safe_delay(u
->pcm_handle
, &delay
, u
->hwbuf_size
, &u
->source
->sample_spec
, TRUE
)) < 0)) {
772 pa_log_warn("Failed to get delay: %s", pa_alsa_strerror(err
));
776 if (PA_UNLIKELY((err
= snd_pcm_status(u
->pcm_handle
, status
)) < 0))
777 pa_log_warn("Failed to get timestamp: %s", pa_alsa_strerror(err
));
779 snd_htimestamp_t htstamp
= { 0, 0 };
780 snd_pcm_status_get_htstamp(status
, &htstamp
);
781 now1
= pa_timespec_load(&htstamp
);
784 /* Hmm, if the timestamp is 0, then it wasn't set and we take the current time */
786 now1
= pa_rtclock_now();
788 /* check if the time since the last update is bigger than the interval */
789 if (u
->last_smoother_update
> 0)
790 if (u
->last_smoother_update
+ u
->smoother_interval
> now1
)
793 position
= u
->read_count
+ ((uint64_t) delay
* (uint64_t) u
->frame_size
);
794 now2
= pa_bytes_to_usec(position
, &u
->source
->sample_spec
);
796 pa_smoother_put(u
->smoother
, now1
, now2
);
798 u
->last_smoother_update
= now1
;
799 /* exponentially increase the update interval up to the MAX limit */
800 u
->smoother_interval
= PA_MIN (u
->smoother_interval
* 2, SMOOTHER_MAX_INTERVAL
);
803 static pa_usec_t
source_get_latency(struct userdata
*u
) {
805 pa_usec_t now1
, now2
;
809 now1
= pa_rtclock_now();
810 now2
= pa_smoother_get(u
->smoother
, now1
);
812 delay
= (int64_t) now2
- (int64_t) pa_bytes_to_usec(u
->read_count
, &u
->source
->sample_spec
);
814 return delay
>= 0 ? (pa_usec_t
) delay
: 0;
817 static int build_pollfd(struct userdata
*u
) {
819 pa_assert(u
->pcm_handle
);
821 if (u
->alsa_rtpoll_item
)
822 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
824 if (!(u
->alsa_rtpoll_item
= pa_alsa_build_pollfd(u
->pcm_handle
, u
->rtpoll
)))
830 /* Called from IO context */
831 static int suspend(struct userdata
*u
) {
833 pa_assert(u
->pcm_handle
);
835 pa_smoother_pause(u
->smoother
, pa_rtclock_now());
838 snd_pcm_close(u
->pcm_handle
);
839 u
->pcm_handle
= NULL
;
841 if (u
->alsa_rtpoll_item
) {
842 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
843 u
->alsa_rtpoll_item
= NULL
;
846 pa_log_info("Device suspended...");
851 /* Called from IO context */
852 static int update_sw_params(struct userdata
*u
) {
853 snd_pcm_uframes_t avail_min
;
858 /* Use the full buffer if no one asked us for anything specific */
864 if ((latency
= pa_source_get_requested_latency_within_thread(u
->source
)) != (pa_usec_t
) -1) {
867 pa_log_debug("latency set to %0.2fms", (double) latency
/ PA_USEC_PER_MSEC
);
869 b
= pa_usec_to_bytes(latency
, &u
->source
->sample_spec
);
871 /* We need at least one sample in our buffer */
873 if (PA_UNLIKELY(b
< u
->frame_size
))
876 u
->hwbuf_unused
= PA_LIKELY(b
< u
->hwbuf_size
) ? (u
->hwbuf_size
- b
) : 0;
879 fix_min_sleep_wakeup(u
);
880 fix_tsched_watermark(u
);
883 pa_log_debug("hwbuf_unused=%lu", (unsigned long) u
->hwbuf_unused
);
888 pa_usec_t sleep_usec
, process_usec
;
890 hw_sleep_time(u
, &sleep_usec
, &process_usec
);
891 avail_min
+= pa_usec_to_bytes(sleep_usec
, &u
->source
->sample_spec
) / u
->frame_size
;
894 pa_log_debug("setting avail_min=%lu", (unsigned long) avail_min
);
896 if ((err
= pa_alsa_set_sw_params(u
->pcm_handle
, avail_min
, !u
->use_tsched
)) < 0) {
897 pa_log("Failed to set software parameters: %s", pa_alsa_strerror(err
));
904 /* Called from IO Context on unsuspend or from main thread when creating source */
905 static void reset_watermark(struct userdata
*u
, size_t tsched_watermark
, pa_sample_spec
*ss
,
908 u
->tsched_watermark
= pa_usec_to_bytes_round_up(pa_bytes_to_usec_round_up(tsched_watermark
, ss
),
909 &u
->source
->sample_spec
);
911 u
->watermark_inc_step
= pa_usec_to_bytes(TSCHED_WATERMARK_INC_STEP_USEC
, &u
->source
->sample_spec
);
912 u
->watermark_dec_step
= pa_usec_to_bytes(TSCHED_WATERMARK_DEC_STEP_USEC
, &u
->source
->sample_spec
);
914 u
->watermark_inc_threshold
= pa_usec_to_bytes_round_up(TSCHED_WATERMARK_INC_THRESHOLD_USEC
, &u
->source
->sample_spec
);
915 u
->watermark_dec_threshold
= pa_usec_to_bytes_round_up(TSCHED_WATERMARK_DEC_THRESHOLD_USEC
, &u
->source
->sample_spec
);
917 fix_min_sleep_wakeup(u
);
918 fix_tsched_watermark(u
);
921 pa_source_set_latency_range_within_thread(u
->source
,
923 pa_bytes_to_usec(u
->hwbuf_size
, ss
));
925 pa_source_set_latency_range(u
->source
,
927 pa_bytes_to_usec(u
->hwbuf_size
, ss
));
929 /* work-around assert in pa_source_set_latency_within_thead,
930 keep track of min_latency and reuse it when
931 this routine is called from IO context */
932 u
->min_latency_ref
= u
->source
->thread_info
.min_latency
;
935 pa_log_info("Time scheduling watermark is %0.2fms",
936 (double) pa_bytes_to_usec(u
->tsched_watermark
, ss
) / PA_USEC_PER_MSEC
);
939 /* Called from IO context */
940 static int unsuspend(struct userdata
*u
) {
944 snd_pcm_uframes_t period_size
, buffer_size
;
947 pa_assert(!u
->pcm_handle
);
949 pa_log_info("Trying resume...");
951 if ((err
= snd_pcm_open(&u
->pcm_handle
, u
->device_name
, SND_PCM_STREAM_CAPTURE
,
953 SND_PCM_NO_AUTO_RESAMPLE
|
954 SND_PCM_NO_AUTO_CHANNELS
|
955 SND_PCM_NO_AUTO_FORMAT
)) < 0) {
956 pa_log("Error opening PCM device %s: %s", u
->device_name
, pa_alsa_strerror(err
));
960 ss
= u
->source
->sample_spec
;
961 period_size
= u
->fragment_size
/ u
->frame_size
;
962 buffer_size
= u
->hwbuf_size
/ u
->frame_size
;
966 if ((err
= pa_alsa_set_hw_params(u
->pcm_handle
, &ss
, &period_size
, &buffer_size
, 0, &b
, &d
, TRUE
)) < 0) {
967 pa_log("Failed to set hardware parameters: %s", pa_alsa_strerror(err
));
971 if (b
!= u
->use_mmap
|| d
!= u
->use_tsched
) {
972 pa_log_warn("Resume failed, couldn't get original access mode.");
976 if (!pa_sample_spec_equal(&ss
, &u
->source
->sample_spec
)) {
977 pa_log_warn("Resume failed, couldn't restore original sample settings.");
981 if (period_size
*u
->frame_size
!= u
->fragment_size
||
982 buffer_size
*u
->frame_size
!= u
->hwbuf_size
) {
983 pa_log_warn("Resume failed, couldn't restore original fragment settings. (Old: %lu/%lu, New %lu/%lu)",
984 (unsigned long) u
->hwbuf_size
, (unsigned long) u
->fragment_size
,
985 (unsigned long) (buffer_size
*u
->frame_size
), (unsigned long) (period_size
*u
->frame_size
));
989 if (update_sw_params(u
) < 0)
992 if (build_pollfd(u
) < 0)
995 /* FIXME: We need to reload the volume somehow */
998 pa_smoother_reset(u
->smoother
, pa_rtclock_now(), TRUE
);
999 u
->smoother_interval
= SMOOTHER_MIN_INTERVAL
;
1000 u
->last_smoother_update
= 0;
1004 /* reset the watermark to the value defined when source was created */
1006 reset_watermark(u
, u
->tsched_watermark_ref
, &u
->source
->sample_spec
, TRUE
);
1008 pa_log_info("Resumed successfully...");
1013 if (u
->pcm_handle
) {
1014 snd_pcm_close(u
->pcm_handle
);
1015 u
->pcm_handle
= NULL
;
1021 /* Called from IO context */
1022 static int source_process_msg(pa_msgobject
*o
, int code
, void *data
, int64_t offset
, pa_memchunk
*chunk
) {
1023 struct userdata
*u
= PA_SOURCE(o
)->userdata
;
1027 case PA_SOURCE_MESSAGE_GET_LATENCY
: {
1031 r
= source_get_latency(u
);
1033 *((pa_usec_t
*) data
) = r
;
1038 case PA_SOURCE_MESSAGE_SET_STATE
:
1040 switch ((pa_source_state_t
) PA_PTR_TO_UINT(data
)) {
1042 case PA_SOURCE_SUSPENDED
: {
1045 pa_assert(PA_SOURCE_IS_OPENED(u
->source
->thread_info
.state
));
1047 if ((r
= suspend(u
)) < 0)
1053 case PA_SOURCE_IDLE
:
1054 case PA_SOURCE_RUNNING
: {
1057 if (u
->source
->thread_info
.state
== PA_SOURCE_INIT
) {
1058 if (build_pollfd(u
) < 0)
1062 if (u
->source
->thread_info
.state
== PA_SOURCE_SUSPENDED
) {
1063 if ((r
= unsuspend(u
)) < 0)
1070 case PA_SOURCE_UNLINKED
:
1071 case PA_SOURCE_INIT
:
1072 case PA_SOURCE_INVALID_STATE
:
1079 return pa_source_process_msg(o
, code
, data
, offset
, chunk
);
1082 /* Called from main context */
1083 static int source_set_state_cb(pa_source
*s
, pa_source_state_t new_state
) {
1084 pa_source_state_t old_state
;
1087 pa_source_assert_ref(s
);
1088 pa_assert_se(u
= s
->userdata
);
1090 old_state
= pa_source_get_state(u
->source
);
1092 if (PA_SOURCE_IS_OPENED(old_state
) && new_state
== PA_SOURCE_SUSPENDED
)
1094 else if (old_state
== PA_SOURCE_SUSPENDED
&& PA_SOURCE_IS_OPENED(new_state
))
1095 if (reserve_init(u
, u
->device_name
) < 0)
1096 return -PA_ERR_BUSY
;
1101 static int ctl_mixer_callback(snd_mixer_elem_t
*elem
, unsigned int mask
) {
1102 struct userdata
*u
= snd_mixer_elem_get_callback_private(elem
);
1105 pa_assert(u
->mixer_handle
);
1107 if (mask
== SND_CTL_EVENT_MASK_REMOVE
)
1110 if (!PA_SOURCE_IS_LINKED(u
->source
->state
))
1113 if (u
->source
->suspend_cause
& PA_SUSPEND_SESSION
)
1116 if (mask
& SND_CTL_EVENT_MASK_VALUE
) {
1117 pa_source_get_volume(u
->source
, TRUE
);
1118 pa_source_get_mute(u
->source
, TRUE
);
1124 static int io_mixer_callback(snd_mixer_elem_t
*elem
, unsigned int mask
) {
1125 struct userdata
*u
= snd_mixer_elem_get_callback_private(elem
);
1128 pa_assert(u
->mixer_handle
);
1130 if (mask
== SND_CTL_EVENT_MASK_REMOVE
)
1133 if (u
->source
->suspend_cause
& PA_SUSPEND_SESSION
)
1136 if (mask
& SND_CTL_EVENT_MASK_VALUE
)
1137 pa_source_update_volume_and_mute(u
->source
);
1142 static void source_get_volume_cb(pa_source
*s
) {
1143 struct userdata
*u
= s
->userdata
;
1145 char vol_str_pcnt
[PA_CVOLUME_SNPRINT_MAX
];
1148 pa_assert(u
->mixer_path
);
1149 pa_assert(u
->mixer_handle
);
1151 if (pa_alsa_path_get_volume(u
->mixer_path
, u
->mixer_handle
, &s
->channel_map
, &r
) < 0)
1154 /* Shift down by the base volume, so that 0dB becomes maximum volume */
1155 pa_sw_cvolume_multiply_scalar(&r
, &r
, s
->base_volume
);
1157 pa_log_debug("Read hardware volume: %s", pa_cvolume_snprint(vol_str_pcnt
, sizeof(vol_str_pcnt
), &r
));
1159 if (u
->mixer_path
->has_dB
) {
1160 char vol_str_db
[PA_SW_CVOLUME_SNPRINT_DB_MAX
];
1162 pa_log_debug(" in dB: %s", pa_sw_cvolume_snprint_dB(vol_str_db
, sizeof(vol_str_db
), &r
));
1165 if (pa_cvolume_equal(&u
->hardware_volume
, &r
))
1168 s
->real_volume
= u
->hardware_volume
= r
;
1170 /* Hmm, so the hardware volume changed, let's reset our software volume */
1171 if (u
->mixer_path
->has_dB
)
1172 pa_source_set_soft_volume(s
, NULL
);
1175 static void source_set_volume_cb(pa_source
*s
) {
1176 struct userdata
*u
= s
->userdata
;
1178 char vol_str_pcnt
[PA_CVOLUME_SNPRINT_MAX
];
1179 pa_bool_t deferred_volume
= !!(s
->flags
& PA_SOURCE_DEFERRED_VOLUME
);
1182 pa_assert(u
->mixer_path
);
1183 pa_assert(u
->mixer_handle
);
1185 /* Shift up by the base volume */
1186 pa_sw_cvolume_divide_scalar(&r
, &s
->real_volume
, s
->base_volume
);
1188 if (pa_alsa_path_set_volume(u
->mixer_path
, u
->mixer_handle
, &s
->channel_map
, &r
, deferred_volume
, !deferred_volume
) < 0)
1191 /* Shift down by the base volume, so that 0dB becomes maximum volume */
1192 pa_sw_cvolume_multiply_scalar(&r
, &r
, s
->base_volume
);
1194 u
->hardware_volume
= r
;
1196 if (u
->mixer_path
->has_dB
) {
1197 pa_cvolume new_soft_volume
;
1198 pa_bool_t accurate_enough
;
1199 char vol_str_db
[PA_SW_CVOLUME_SNPRINT_DB_MAX
];
1201 /* Match exactly what the user requested by software */
1202 pa_sw_cvolume_divide(&new_soft_volume
, &s
->real_volume
, &u
->hardware_volume
);
1204 /* If the adjustment to do in software is only minimal we
1205 * can skip it. That saves us CPU at the expense of a bit of
1208 (pa_cvolume_min(&new_soft_volume
) >= (PA_VOLUME_NORM
- VOLUME_ACCURACY
)) &&
1209 (pa_cvolume_max(&new_soft_volume
) <= (PA_VOLUME_NORM
+ VOLUME_ACCURACY
));
1211 pa_log_debug("Requested volume: %s", pa_cvolume_snprint(vol_str_pcnt
, sizeof(vol_str_pcnt
), &s
->real_volume
));
1212 pa_log_debug(" in dB: %s", pa_sw_cvolume_snprint_dB(vol_str_db
, sizeof(vol_str_db
), &s
->real_volume
));
1213 pa_log_debug("Got hardware volume: %s", pa_cvolume_snprint(vol_str_pcnt
, sizeof(vol_str_pcnt
), &u
->hardware_volume
));
1214 pa_log_debug(" in dB: %s", pa_sw_cvolume_snprint_dB(vol_str_db
, sizeof(vol_str_db
), &u
->hardware_volume
));
1215 pa_log_debug("Calculated software volume: %s (accurate-enough=%s)",
1216 pa_cvolume_snprint(vol_str_pcnt
, sizeof(vol_str_pcnt
), &new_soft_volume
),
1217 pa_yes_no(accurate_enough
));
1218 pa_log_debug(" in dB: %s", pa_sw_cvolume_snprint_dB(vol_str_db
, sizeof(vol_str_db
), &new_soft_volume
));
1220 if (!accurate_enough
)
1221 s
->soft_volume
= new_soft_volume
;
1224 pa_log_debug("Wrote hardware volume: %s", pa_cvolume_snprint(vol_str_pcnt
, sizeof(vol_str_pcnt
), &r
));
1226 /* We can't match exactly what the user requested, hence let's
1227 * at least tell the user about it */
1233 static void source_write_volume_cb(pa_source
*s
) {
1234 struct userdata
*u
= s
->userdata
;
1235 pa_cvolume hw_vol
= s
->thread_info
.current_hw_volume
;
1238 pa_assert(u
->mixer_path
);
1239 pa_assert(u
->mixer_handle
);
1240 pa_assert(s
->flags
& PA_SOURCE_DEFERRED_VOLUME
);
1242 /* Shift up by the base volume */
1243 pa_sw_cvolume_divide_scalar(&hw_vol
, &hw_vol
, s
->base_volume
);
1245 if (pa_alsa_path_set_volume(u
->mixer_path
, u
->mixer_handle
, &s
->channel_map
, &hw_vol
, TRUE
, TRUE
) < 0)
1246 pa_log_error("Writing HW volume failed");
1249 pa_bool_t accurate_enough
;
1251 /* Shift down by the base volume, so that 0dB becomes maximum volume */
1252 pa_sw_cvolume_multiply_scalar(&hw_vol
, &hw_vol
, s
->base_volume
);
1254 pa_sw_cvolume_divide(&tmp_vol
, &hw_vol
, &s
->thread_info
.current_hw_volume
);
1256 (pa_cvolume_min(&tmp_vol
) >= (PA_VOLUME_NORM
- VOLUME_ACCURACY
)) &&
1257 (pa_cvolume_max(&tmp_vol
) <= (PA_VOLUME_NORM
+ VOLUME_ACCURACY
));
1259 if (!accurate_enough
) {
1261 char db
[2][PA_SW_CVOLUME_SNPRINT_DB_MAX
];
1262 char pcnt
[2][PA_CVOLUME_SNPRINT_MAX
];
1265 pa_log_debug("Written HW volume did not match with the request: %s (request) != %s",
1266 pa_cvolume_snprint(vol
.pcnt
[0], sizeof(vol
.pcnt
[0]), &s
->thread_info
.current_hw_volume
),
1267 pa_cvolume_snprint(vol
.pcnt
[1], sizeof(vol
.pcnt
[1]), &hw_vol
));
1268 pa_log_debug(" in dB: %s (request) != %s",
1269 pa_sw_cvolume_snprint_dB(vol
.db
[0], sizeof(vol
.db
[0]), &s
->thread_info
.current_hw_volume
),
1270 pa_sw_cvolume_snprint_dB(vol
.db
[1], sizeof(vol
.db
[1]), &hw_vol
));
1275 static void source_get_mute_cb(pa_source
*s
) {
1276 struct userdata
*u
= s
->userdata
;
1280 pa_assert(u
->mixer_path
);
1281 pa_assert(u
->mixer_handle
);
1283 if (pa_alsa_path_get_mute(u
->mixer_path
, u
->mixer_handle
, &b
) < 0)
1289 static void source_set_mute_cb(pa_source
*s
) {
1290 struct userdata
*u
= s
->userdata
;
1293 pa_assert(u
->mixer_path
);
1294 pa_assert(u
->mixer_handle
);
1296 pa_alsa_path_set_mute(u
->mixer_path
, u
->mixer_handle
, s
->muted
);
1299 static void mixer_volume_init(struct userdata
*u
) {
1302 if (!u
->mixer_path
->has_volume
) {
1303 pa_source_set_write_volume_callback(u
->source
, NULL
);
1304 pa_source_set_get_volume_callback(u
->source
, NULL
);
1305 pa_source_set_set_volume_callback(u
->source
, NULL
);
1307 pa_log_info("Driver does not support hardware volume control, falling back to software volume control.");
1309 pa_source_set_get_volume_callback(u
->source
, source_get_volume_cb
);
1310 pa_source_set_set_volume_callback(u
->source
, source_set_volume_cb
);
1312 if (u
->mixer_path
->has_dB
&& u
->deferred_volume
) {
1313 pa_source_set_write_volume_callback(u
->source
, source_write_volume_cb
);
1314 pa_log_info("Successfully enabled synchronous volume.");
1316 pa_source_set_write_volume_callback(u
->source
, NULL
);
1318 if (u
->mixer_path
->has_dB
) {
1319 pa_source_enable_decibel_volume(u
->source
, TRUE
);
1320 pa_log_info("Hardware volume ranges from %0.2f dB to %0.2f dB.", u
->mixer_path
->min_dB
, u
->mixer_path
->max_dB
);
1322 u
->source
->base_volume
= pa_sw_volume_from_dB(-u
->mixer_path
->max_dB
);
1323 u
->source
->n_volume_steps
= PA_VOLUME_NORM
+1;
1325 pa_log_info("Fixing base volume to %0.2f dB", pa_sw_volume_to_dB(u
->source
->base_volume
));
1327 pa_source_enable_decibel_volume(u
->source
, FALSE
);
1328 pa_log_info("Hardware volume ranges from %li to %li.", u
->mixer_path
->min_volume
, u
->mixer_path
->max_volume
);
1330 u
->source
->base_volume
= PA_VOLUME_NORM
;
1331 u
->source
->n_volume_steps
= u
->mixer_path
->max_volume
- u
->mixer_path
->min_volume
+ 1;
1334 pa_log_info("Using hardware volume control. Hardware dB scale %s.", u
->mixer_path
->has_dB
? "supported" : "not supported");
1337 if (!u
->mixer_path
->has_mute
) {
1338 pa_source_set_get_mute_callback(u
->source
, NULL
);
1339 pa_source_set_set_mute_callback(u
->source
, NULL
);
1340 pa_log_info("Driver does not support hardware mute control, falling back to software mute control.");
1342 pa_source_set_get_mute_callback(u
->source
, source_get_mute_cb
);
1343 pa_source_set_set_mute_callback(u
->source
, source_set_mute_cb
);
1344 pa_log_info("Using hardware mute control.");
1348 static int source_set_port_cb(pa_source
*s
, pa_device_port
*p
) {
1349 struct userdata
*u
= s
->userdata
;
1350 pa_alsa_port_data
*data
;
1354 pa_assert(u
->mixer_handle
);
1356 data
= PA_DEVICE_PORT_DATA(p
);
1358 pa_assert_se(u
->mixer_path
= data
->path
);
1359 pa_alsa_path_select(u
->mixer_path
, u
->mixer_handle
);
1361 mixer_volume_init(u
);
1364 pa_alsa_setting_select(data
->setting
, u
->mixer_handle
);
1374 static void source_update_requested_latency_cb(pa_source
*s
) {
1375 struct userdata
*u
= s
->userdata
;
1377 pa_assert(u
->use_tsched
); /* only when timer scheduling is used
1378 * we can dynamically adjust the
1384 update_sw_params(u
);
1387 static pa_bool_t
source_update_rate_cb(pa_source
*s
, uint32_t rate
)
1389 struct userdata
*u
= s
->userdata
;
1391 pa_bool_t supported
= FALSE
;
1395 for (i
= 0; u
->rates
[i
]; i
++) {
1396 if (u
->rates
[i
] == rate
) {
1403 pa_log_info("Sink does not support sample rate of %d Hz", rate
);
1407 if (!PA_SOURCE_IS_OPENED(s
->state
)) {
1408 pa_log_info("Updating rate for device %s, new rate is %d", u
->device_name
, rate
);
1409 u
->source
->sample_spec
.rate
= rate
;
1416 static void thread_func(void *userdata
) {
1417 struct userdata
*u
= userdata
;
1418 unsigned short revents
= 0;
1422 pa_log_debug("Thread starting up");
1424 if (u
->core
->realtime_scheduling
)
1425 pa_make_realtime(u
->core
->realtime_priority
);
1427 pa_thread_mq_install(&u
->thread_mq
);
1431 pa_usec_t rtpoll_sleep
= 0;
1434 pa_log_debug("Loop");
1437 /* Read some data and pass it to the sources */
1438 if (PA_SOURCE_IS_OPENED(u
->source
->thread_info
.state
)) {
1440 pa_usec_t sleep_usec
= 0;
1441 pa_bool_t on_timeout
= pa_rtpoll_timer_elapsed(u
->rtpoll
);
1444 pa_log_info("Starting capture.");
1445 snd_pcm_start(u
->pcm_handle
);
1447 pa_smoother_resume(u
->smoother
, pa_rtclock_now(), TRUE
);
1453 work_done
= mmap_read(u
, &sleep_usec
, revents
& POLLIN
, on_timeout
);
1455 work_done
= unix_read(u
, &sleep_usec
, revents
& POLLIN
, on_timeout
);
1460 /* pa_log_debug("work_done = %i", work_done); */
1465 if (u
->use_tsched
) {
1468 /* OK, the capture buffer is now empty, let's
1469 * calculate when to wake up next */
1471 /* pa_log_debug("Waking up in %0.2fms (sound card clock).", (double) sleep_usec / PA_USEC_PER_MSEC); */
1473 /* Convert from the sound card time domain to the
1474 * system time domain */
1475 cusec
= pa_smoother_translate(u
->smoother
, pa_rtclock_now(), sleep_usec
);
1477 /* pa_log_debug("Waking up in %0.2fms (system clock).", (double) cusec / PA_USEC_PER_MSEC); */
1479 /* We don't trust the conversion, so we wake up whatever comes first */
1480 rtpoll_sleep
= PA_MIN(sleep_usec
, cusec
);
1484 if (u
->source
->flags
& PA_SOURCE_DEFERRED_VOLUME
) {
1485 pa_usec_t volume_sleep
;
1486 pa_source_volume_change_apply(u
->source
, &volume_sleep
);
1487 if (volume_sleep
> 0) {
1488 if (rtpoll_sleep
> 0)
1489 rtpoll_sleep
= PA_MIN(volume_sleep
, rtpoll_sleep
);
1491 rtpoll_sleep
= volume_sleep
;
1495 if (rtpoll_sleep
> 0)
1496 pa_rtpoll_set_timer_relative(u
->rtpoll
, rtpoll_sleep
);
1498 pa_rtpoll_set_timer_disabled(u
->rtpoll
);
1500 /* Hmm, nothing to do. Let's sleep */
1501 if ((ret
= pa_rtpoll_run(u
->rtpoll
, TRUE
)) < 0)
1504 if (u
->source
->flags
& PA_SOURCE_DEFERRED_VOLUME
)
1505 pa_source_volume_change_apply(u
->source
, NULL
);
1510 /* Tell ALSA about this and process its response */
1511 if (PA_SOURCE_IS_OPENED(u
->source
->thread_info
.state
)) {
1512 struct pollfd
*pollfd
;
1516 pollfd
= pa_rtpoll_item_get_pollfd(u
->alsa_rtpoll_item
, &n
);
1518 if ((err
= snd_pcm_poll_descriptors_revents(u
->pcm_handle
, pollfd
, n
, &revents
)) < 0) {
1519 pa_log("snd_pcm_poll_descriptors_revents() failed: %s", pa_alsa_strerror(err
));
1523 if (revents
& ~POLLIN
) {
1524 if (pa_alsa_recover_from_poll(u
->pcm_handle
, revents
) < 0)
1529 } else if (revents
&& u
->use_tsched
&& pa_log_ratelimit(PA_LOG_DEBUG
))
1530 pa_log_debug("Wakeup from ALSA!");
1537 /* If this was no regular exit from the loop we have to continue
1538 * processing messages until we received PA_MESSAGE_SHUTDOWN */
1539 pa_asyncmsgq_post(u
->thread_mq
.outq
, PA_MSGOBJECT(u
->core
), PA_CORE_MESSAGE_UNLOAD_MODULE
, u
->module
, 0, NULL
, NULL
);
1540 pa_asyncmsgq_wait_for(u
->thread_mq
.inq
, PA_MESSAGE_SHUTDOWN
);
1543 pa_log_debug("Thread shutting down");
1546 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
) {
1552 pa_assert(device_name
);
1554 if ((n
= pa_modargs_get_value(ma
, "source_name", NULL
))) {
1555 pa_source_new_data_set_name(data
, n
);
1556 data
->namereg_fail
= TRUE
;
1560 if ((n
= pa_modargs_get_value(ma
, "name", NULL
)))
1561 data
->namereg_fail
= TRUE
;
1563 n
= device_id
? device_id
: device_name
;
1564 data
->namereg_fail
= FALSE
;
1568 t
= pa_sprintf_malloc("alsa_input.%s.%s", n
, mapping
->name
);
1570 t
= pa_sprintf_malloc("alsa_input.%s", n
);
1572 pa_source_new_data_set_name(data
, t
);
1576 static void find_mixer(struct userdata
*u
, pa_alsa_mapping
*mapping
, const char *element
, pa_bool_t ignore_dB
) {
1578 if (!mapping
&& !element
)
1581 if (!(u
->mixer_handle
= pa_alsa_open_mixer_for_pcm(u
->pcm_handle
, &u
->control_device
))) {
1582 pa_log_info("Failed to find a working mixer device.");
1588 if (!(u
->mixer_path
= pa_alsa_path_synthesize(element
, PA_ALSA_DIRECTION_INPUT
)))
1591 if (pa_alsa_path_probe(u
->mixer_path
, u
->mixer_handle
, ignore_dB
) < 0)
1594 pa_log_debug("Probed mixer path %s:", u
->mixer_path
->name
);
1595 pa_alsa_path_dump(u
->mixer_path
);
1598 if (!(u
->mixer_path_set
= pa_alsa_path_set_new(mapping
, PA_ALSA_DIRECTION_INPUT
, u
->paths_dir
)))
1601 pa_alsa_path_set_probe(u
->mixer_path_set
, u
->mixer_handle
, ignore_dB
);
1608 if (u
->mixer_path_set
) {
1609 pa_alsa_path_set_free(u
->mixer_path_set
);
1610 u
->mixer_path_set
= NULL
;
1611 } else if (u
->mixer_path
) {
1612 pa_alsa_path_free(u
->mixer_path
);
1613 u
->mixer_path
= NULL
;
1616 if (u
->mixer_handle
) {
1617 snd_mixer_close(u
->mixer_handle
);
1618 u
->mixer_handle
= NULL
;
1622 static int setup_mixer(struct userdata
*u
, pa_bool_t ignore_dB
) {
1623 pa_bool_t need_mixer_callback
= FALSE
;
1627 if (!u
->mixer_handle
)
1630 if (u
->source
->active_port
) {
1631 pa_alsa_port_data
*data
;
1633 /* We have a list of supported paths, so let's activate the
1634 * one that has been chosen as active */
1636 data
= PA_DEVICE_PORT_DATA(u
->source
->active_port
);
1637 u
->mixer_path
= data
->path
;
1639 pa_alsa_path_select(data
->path
, u
->mixer_handle
);
1642 pa_alsa_setting_select(data
->setting
, u
->mixer_handle
);
1646 if (!u
->mixer_path
&& u
->mixer_path_set
)
1647 u
->mixer_path
= u
->mixer_path_set
->paths
;
1649 if (u
->mixer_path
) {
1650 /* Hmm, we have only a single path, then let's activate it */
1652 pa_alsa_path_select(u
->mixer_path
, u
->mixer_handle
);
1654 if (u
->mixer_path
->settings
)
1655 pa_alsa_setting_select(u
->mixer_path
->settings
, u
->mixer_handle
);
1660 mixer_volume_init(u
);
1662 /* Will we need to register callbacks? */
1663 if (u
->mixer_path_set
&& u
->mixer_path_set
->paths
) {
1666 PA_LLIST_FOREACH(p
, u
->mixer_path_set
->paths
) {
1667 if (p
->has_volume
|| p
->has_mute
)
1668 need_mixer_callback
= TRUE
;
1671 else if (u
->mixer_path
)
1672 need_mixer_callback
= u
->mixer_path
->has_volume
|| u
->mixer_path
->has_mute
;
1674 if (need_mixer_callback
) {
1675 int (*mixer_callback
)(snd_mixer_elem_t
*, unsigned int);
1676 if (u
->source
->flags
& PA_SOURCE_DEFERRED_VOLUME
) {
1677 u
->mixer_pd
= pa_alsa_mixer_pdata_new();
1678 mixer_callback
= io_mixer_callback
;
1680 if (pa_alsa_set_mixer_rtpoll(u
->mixer_pd
, u
->mixer_handle
, u
->rtpoll
) < 0) {
1681 pa_log("Failed to initialize file descriptor monitoring");
1685 u
->mixer_fdl
= pa_alsa_fdlist_new();
1686 mixer_callback
= ctl_mixer_callback
;
1688 if (pa_alsa_fdlist_set_mixer(u
->mixer_fdl
, u
->mixer_handle
, u
->core
->mainloop
) < 0) {
1689 pa_log("Failed to initialize file descriptor monitoring");
1694 if (u
->mixer_path_set
)
1695 pa_alsa_path_set_set_callback(u
->mixer_path_set
, u
->mixer_handle
, mixer_callback
, u
);
1697 pa_alsa_path_set_callback(u
->mixer_path
, u
->mixer_handle
, mixer_callback
, u
);
1703 pa_source
*pa_alsa_source_new(pa_module
*m
, pa_modargs
*ma
, const char*driver
, pa_card
*card
, pa_alsa_mapping
*mapping
) {
1705 struct userdata
*u
= NULL
;
1706 const char *dev_id
= NULL
;
1708 uint32_t alternate_sample_rate
;
1710 uint32_t nfrags
, frag_size
, buffer_size
, tsched_size
, tsched_watermark
;
1711 snd_pcm_uframes_t period_frames
, buffer_frames
, tsched_frames
;
1713 pa_bool_t use_mmap
= TRUE
, b
, use_tsched
= TRUE
, d
, ignore_dB
= FALSE
, namereg_fail
= FALSE
, deferred_volume
= FALSE
;
1714 pa_source_new_data data
;
1715 pa_alsa_profile_set
*profile_set
= NULL
;
1720 ss
= m
->core
->default_sample_spec
;
1721 map
= m
->core
->default_channel_map
;
1722 if (pa_modargs_get_sample_spec_and_channel_map(ma
, &ss
, &map
, PA_CHANNEL_MAP_ALSA
) < 0) {
1723 pa_log("Failed to parse sample specification and channel map");
1727 alternate_sample_rate
= m
->core
->alternate_sample_rate
;
1728 if (pa_modargs_get_alternate_sample_rate(ma
, &alternate_sample_rate
) < 0) {
1729 pa_log("Failed to parse alternate sample rate");
1733 frame_size
= pa_frame_size(&ss
);
1735 nfrags
= m
->core
->default_n_fragments
;
1736 frag_size
= (uint32_t) pa_usec_to_bytes(m
->core
->default_fragment_size_msec
*PA_USEC_PER_MSEC
, &ss
);
1738 frag_size
= (uint32_t) frame_size
;
1739 tsched_size
= (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_BUFFER_USEC
, &ss
);
1740 tsched_watermark
= (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_WATERMARK_USEC
, &ss
);
1742 if (pa_modargs_get_value_u32(ma
, "fragments", &nfrags
) < 0 ||
1743 pa_modargs_get_value_u32(ma
, "fragment_size", &frag_size
) < 0 ||
1744 pa_modargs_get_value_u32(ma
, "tsched_buffer_size", &tsched_size
) < 0 ||
1745 pa_modargs_get_value_u32(ma
, "tsched_buffer_watermark", &tsched_watermark
) < 0) {
1746 pa_log("Failed to parse buffer metrics");
1750 buffer_size
= nfrags
* frag_size
;
1752 period_frames
= frag_size
/frame_size
;
1753 buffer_frames
= buffer_size
/frame_size
;
1754 tsched_frames
= tsched_size
/frame_size
;
1756 if (pa_modargs_get_value_boolean(ma
, "mmap", &use_mmap
) < 0) {
1757 pa_log("Failed to parse mmap argument.");
1761 if (pa_modargs_get_value_boolean(ma
, "tsched", &use_tsched
) < 0) {
1762 pa_log("Failed to parse tsched argument.");
1766 if (pa_modargs_get_value_boolean(ma
, "ignore_dB", &ignore_dB
) < 0) {
1767 pa_log("Failed to parse ignore_dB argument.");
1771 deferred_volume
= m
->core
->deferred_volume
;
1772 if (pa_modargs_get_value_boolean(ma
, "deferred_volume", &deferred_volume
) < 0) {
1773 pa_log("Failed to parse deferred_volume argument.");
1777 use_tsched
= pa_alsa_may_tsched(use_tsched
);
1779 u
= pa_xnew0(struct userdata
, 1);
1782 u
->use_mmap
= use_mmap
;
1783 u
->use_tsched
= use_tsched
;
1784 u
->deferred_volume
= deferred_volume
;
1786 u
->rtpoll
= pa_rtpoll_new();
1787 pa_thread_mq_init(&u
->thread_mq
, m
->core
->mainloop
, u
->rtpoll
);
1789 u
->smoother
= pa_smoother_new(
1790 SMOOTHER_ADJUST_USEC
,
1791 SMOOTHER_WINDOW_USEC
,
1797 u
->smoother_interval
= SMOOTHER_MIN_INTERVAL
;
1799 dev_id
= pa_modargs_get_value(
1801 pa_modargs_get_value(ma
, "device", DEFAULT_DEVICE
));
1803 u
->paths_dir
= pa_xstrdup(pa_modargs_get_value(ma
, "paths_dir", NULL
));
1805 if (reserve_init(u
, dev_id
) < 0)
1808 if (reserve_monitor_init(u
, dev_id
) < 0)
1816 if (!(dev_id
= pa_modargs_get_value(ma
, "device_id", NULL
))) {
1817 pa_log("device_id= not set");
1821 if (!(u
->pcm_handle
= pa_alsa_open_by_device_id_mapping(
1825 SND_PCM_STREAM_CAPTURE
,
1826 &period_frames
, &buffer_frames
, tsched_frames
,
1830 } else if ((dev_id
= pa_modargs_get_value(ma
, "device_id", NULL
))) {
1832 if (!(profile_set
= pa_alsa_profile_set_new(NULL
, &map
)))
1835 if (!(u
->pcm_handle
= pa_alsa_open_by_device_id_auto(
1839 SND_PCM_STREAM_CAPTURE
,
1840 &period_frames
, &buffer_frames
, tsched_frames
,
1841 &b
, &d
, profile_set
, &mapping
)))
1846 if (!(u
->pcm_handle
= pa_alsa_open_by_device_string(
1847 pa_modargs_get_value(ma
, "device", DEFAULT_DEVICE
),
1850 SND_PCM_STREAM_CAPTURE
,
1851 &period_frames
, &buffer_frames
, tsched_frames
,
1856 pa_assert(u
->device_name
);
1857 pa_log_info("Successfully opened device %s.", u
->device_name
);
1859 if (pa_alsa_pcm_is_modem(u
->pcm_handle
)) {
1860 pa_log_notice("Device %s is modem, refusing further initialization.", u
->device_name
);
1865 pa_log_info("Selected mapping '%s' (%s).", mapping
->description
, mapping
->name
);
1867 if (use_mmap
&& !b
) {
1868 pa_log_info("Device doesn't support mmap(), falling back to UNIX read/write mode.");
1869 u
->use_mmap
= use_mmap
= FALSE
;
1872 if (use_tsched
&& (!b
|| !d
)) {
1873 pa_log_info("Cannot enable timer-based scheduling, falling back to sound IRQ scheduling.");
1874 u
->use_tsched
= use_tsched
= FALSE
;
1878 pa_log_info("Successfully enabled mmap() mode.");
1881 pa_log_info("Successfully enabled timer-based scheduling mode.");
1883 u
->rates
= pa_alsa_get_supported_rates(u
->pcm_handle
);
1885 pa_log_error("Failed to find any supported sample rates.");
1889 /* ALSA might tweak the sample spec, so recalculate the frame size */
1890 frame_size
= pa_frame_size(&ss
);
1892 find_mixer(u
, mapping
, pa_modargs_get_value(ma
, "control", NULL
), ignore_dB
);
1894 pa_source_new_data_init(&data
);
1895 data
.driver
= driver
;
1898 set_source_name(&data
, ma
, dev_id
, u
->device_name
, mapping
);
1900 /* We need to give pa_modargs_get_value_boolean() a pointer to a local
1901 * variable instead of using &data.namereg_fail directly, because
1902 * data.namereg_fail is a bitfield and taking the address of a bitfield
1903 * variable is impossible. */
1904 namereg_fail
= data
.namereg_fail
;
1905 if (pa_modargs_get_value_boolean(ma
, "namereg_fail", &namereg_fail
) < 0) {
1906 pa_log("Failed to parse namereg_fail argument.");
1907 pa_source_new_data_done(&data
);
1910 data
.namereg_fail
= namereg_fail
;
1912 pa_source_new_data_set_sample_spec(&data
, &ss
);
1913 pa_source_new_data_set_channel_map(&data
, &map
);
1914 pa_source_new_data_set_alternate_sample_rate(&data
, alternate_sample_rate
);
1916 pa_alsa_init_proplist_pcm(m
->core
, data
.proplist
, u
->pcm_handle
);
1917 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_STRING
, u
->device_name
);
1918 pa_proplist_setf(data
.proplist
, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE
, "%lu", (unsigned long) (buffer_frames
* frame_size
));
1919 pa_proplist_setf(data
.proplist
, PA_PROP_DEVICE_BUFFERING_FRAGMENT_SIZE
, "%lu", (unsigned long) (period_frames
* frame_size
));
1920 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_ACCESS_MODE
, u
->use_tsched
? "mmap+timer" : (u
->use_mmap
? "mmap" : "serial"));
1923 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_PROFILE_NAME
, mapping
->name
);
1924 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_PROFILE_DESCRIPTION
, mapping
->description
);
1927 pa_alsa_init_description(data
.proplist
);
1929 if (u
->control_device
)
1930 pa_alsa_init_proplist_ctl(data
.proplist
, u
->control_device
);
1932 if (pa_modargs_get_proplist(ma
, "source_properties", data
.proplist
, PA_UPDATE_REPLACE
) < 0) {
1933 pa_log("Invalid properties");
1934 pa_source_new_data_done(&data
);
1938 if (u
->mixer_path_set
)
1939 pa_alsa_add_ports(&data
.ports
, u
->mixer_path_set
);
1941 u
->source
= pa_source_new(m
->core
, &data
, PA_SOURCE_HARDWARE
|PA_SOURCE_LATENCY
|(u
->use_tsched
? PA_SOURCE_DYNAMIC_LATENCY
: 0));
1942 pa_source_new_data_done(&data
);
1945 pa_log("Failed to create source object");
1949 if (pa_modargs_get_value_u32(ma
, "deferred_volume_safety_margin",
1950 &u
->source
->thread_info
.volume_change_safety_margin
) < 0) {
1951 pa_log("Failed to parse deferred_volume_safety_margin parameter");
1955 if (pa_modargs_get_value_s32(ma
, "deferred_volume_extra_delay",
1956 &u
->source
->thread_info
.volume_change_extra_delay
) < 0) {
1957 pa_log("Failed to parse deferred_volume_extra_delay parameter");
1961 u
->source
->parent
.process_msg
= source_process_msg
;
1963 u
->source
->update_requested_latency
= source_update_requested_latency_cb
;
1964 u
->source
->set_state
= source_set_state_cb
;
1965 u
->source
->set_port
= source_set_port_cb
;
1966 if (u
->source
->alternate_sample_rate
)
1967 u
->source
->update_rate
= source_update_rate_cb
;
1968 u
->source
->userdata
= u
;
1970 pa_source_set_asyncmsgq(u
->source
, u
->thread_mq
.inq
);
1971 pa_source_set_rtpoll(u
->source
, u
->rtpoll
);
1973 u
->frame_size
= frame_size
;
1974 u
->fragment_size
= frag_size
= (size_t) (period_frames
* frame_size
);
1975 u
->hwbuf_size
= buffer_size
= (size_t) (buffer_frames
* frame_size
);
1976 pa_cvolume_mute(&u
->hardware_volume
, u
->source
->sample_spec
.channels
);
1978 pa_log_info("Using %0.1f fragments of size %lu bytes (%0.2fms), buffer size is %lu bytes (%0.2fms)",
1979 (double) u
->hwbuf_size
/ (double) u
->fragment_size
,
1980 (long unsigned) u
->fragment_size
,
1981 (double) pa_bytes_to_usec(u
->fragment_size
, &ss
) / PA_USEC_PER_MSEC
,
1982 (long unsigned) u
->hwbuf_size
,
1983 (double) pa_bytes_to_usec(u
->hwbuf_size
, &ss
) / PA_USEC_PER_MSEC
);
1985 if (u
->use_tsched
) {
1986 u
->tsched_watermark_ref
= tsched_watermark
;
1987 reset_watermark(u
, u
->tsched_watermark_ref
, &ss
, FALSE
);
1990 pa_source_set_fixed_latency(u
->source
, pa_bytes_to_usec(u
->hwbuf_size
, &ss
));
1994 if (update_sw_params(u
) < 0)
1997 if (setup_mixer(u
, ignore_dB
) < 0)
2000 pa_alsa_dump(PA_LOG_DEBUG
, u
->pcm_handle
);
2002 if (!(u
->thread
= pa_thread_new("alsa-source", thread_func
, u
))) {
2003 pa_log("Failed to create thread.");
2007 /* Get initial mixer settings */
2008 if (data
.volume_is_set
) {
2009 if (u
->source
->set_volume
)
2010 u
->source
->set_volume(u
->source
);
2012 if (u
->source
->get_volume
)
2013 u
->source
->get_volume(u
->source
);
2016 if (data
.muted_is_set
) {
2017 if (u
->source
->set_mute
)
2018 u
->source
->set_mute(u
->source
);
2020 if (u
->source
->get_mute
)
2021 u
->source
->get_mute(u
->source
);
2024 if ((data
.volume_is_set
|| data
.muted_is_set
) && u
->source
->write_volume
)
2025 u
->source
->write_volume(u
->source
);
2027 pa_source_put(u
->source
);
2030 pa_alsa_profile_set_free(profile_set
);
2040 pa_alsa_profile_set_free(profile_set
);
2045 static void userdata_free(struct userdata
*u
) {
2049 pa_source_unlink(u
->source
);
2052 pa_asyncmsgq_send(u
->thread_mq
.inq
, NULL
, PA_MESSAGE_SHUTDOWN
, NULL
, 0, NULL
);
2053 pa_thread_free(u
->thread
);
2056 pa_thread_mq_done(&u
->thread_mq
);
2059 pa_source_unref(u
->source
);
2062 pa_alsa_mixer_pdata_free(u
->mixer_pd
);
2064 if (u
->alsa_rtpoll_item
)
2065 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
2068 pa_rtpoll_free(u
->rtpoll
);
2070 if (u
->pcm_handle
) {
2071 snd_pcm_drop(u
->pcm_handle
);
2072 snd_pcm_close(u
->pcm_handle
);
2076 pa_alsa_fdlist_free(u
->mixer_fdl
);
2078 if (u
->mixer_path_set
)
2079 pa_alsa_path_set_free(u
->mixer_path_set
);
2080 else if (u
->mixer_path
)
2081 pa_alsa_path_free(u
->mixer_path
);
2083 if (u
->mixer_handle
)
2084 snd_mixer_close(u
->mixer_handle
);
2087 pa_smoother_free(u
->smoother
);
2095 pa_xfree(u
->device_name
);
2096 pa_xfree(u
->control_device
);
2097 pa_xfree(u
->paths_dir
);
2101 void pa_alsa_source_free(pa_source
*s
) {
2104 pa_source_assert_ref(s
);
2105 pa_assert_se(u
= s
->userdata
);