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/i18n.h>
32 #include <pulse/rtclock.h>
33 #include <pulse/timeval.h>
34 #include <pulse/util.h>
35 #include <pulse/xmalloc.h>
37 #include <pulsecore/core-error.h>
38 #include <pulsecore/core.h>
39 #include <pulsecore/module.h>
40 #include <pulsecore/memchunk.h>
41 #include <pulsecore/sink.h>
42 #include <pulsecore/modargs.h>
43 #include <pulsecore/core-rtclock.h>
44 #include <pulsecore/core-util.h>
45 #include <pulsecore/sample-util.h>
46 #include <pulsecore/log.h>
47 #include <pulsecore/macro.h>
48 #include <pulsecore/thread.h>
49 #include <pulsecore/core-error.h>
50 #include <pulsecore/thread-mq.h>
51 #include <pulsecore/rtpoll.h>
52 #include <pulsecore/time-smoother.h>
54 #include <modules/reserve-wrap.h>
56 #include "alsa-util.h"
57 #include "alsa-source.h"
59 /* #define DEBUG_TIMING */
61 #define DEFAULT_DEVICE "default"
63 #define DEFAULT_TSCHED_BUFFER_USEC (2*PA_USEC_PER_SEC) /* 2s */
64 #define DEFAULT_TSCHED_WATERMARK_USEC (20*PA_USEC_PER_MSEC) /* 20ms */
66 #define TSCHED_WATERMARK_INC_STEP_USEC (10*PA_USEC_PER_MSEC) /* 10ms */
67 #define TSCHED_WATERMARK_DEC_STEP_USEC (5*PA_USEC_PER_MSEC) /* 5ms */
68 #define TSCHED_WATERMARK_VERIFY_AFTER_USEC (20*PA_USEC_PER_SEC) /* 20s */
69 #define TSCHED_WATERMARK_INC_THRESHOLD_USEC (0*PA_USEC_PER_MSEC) /* 0ms */
70 #define TSCHED_WATERMARK_DEC_THRESHOLD_USEC (100*PA_USEC_PER_MSEC) /* 100ms */
71 #define TSCHED_WATERMARK_STEP_USEC (10*PA_USEC_PER_MSEC) /* 10ms */
73 #define TSCHED_MIN_SLEEP_USEC (10*PA_USEC_PER_MSEC) /* 10ms */
74 #define TSCHED_MIN_WAKEUP_USEC (4*PA_USEC_PER_MSEC) /* 4ms */
76 #define SMOOTHER_MIN_INTERVAL (2*PA_USEC_PER_MSEC) /* 2ms */
77 #define SMOOTHER_MAX_INTERVAL (200*PA_USEC_PER_MSEC) /* 200ms */
79 #define VOLUME_ACCURACY (PA_VOLUME_NORM/100)
87 pa_thread_mq thread_mq
;
90 snd_pcm_t
*pcm_handle
;
92 pa_alsa_fdlist
*mixer_fdl
;
93 snd_mixer_t
*mixer_handle
;
94 pa_alsa_path_set
*mixer_path_set
;
95 pa_alsa_path
*mixer_path
;
97 pa_cvolume hardware_volume
;
109 watermark_inc_threshold
,
110 watermark_dec_threshold
;
112 pa_usec_t watermark_dec_not_before
;
115 char *control_device
;
117 pa_bool_t use_mmap
:1, use_tsched
:1;
121 pa_rtpoll_item
*alsa_rtpoll_item
;
123 snd_mixer_selem_channel_id_t mixer_map
[SND_MIXER_SCHN_LAST
];
125 pa_smoother
*smoother
;
127 pa_usec_t smoother_interval
;
128 pa_usec_t last_smoother_update
;
130 pa_reserve_wrapper
*reserve
;
131 pa_hook_slot
*reserve_slot
;
132 pa_reserve_monitor_wrapper
*monitor
;
133 pa_hook_slot
*monitor_slot
;
136 static void userdata_free(struct userdata
*u
);
138 static pa_hook_result_t
reserve_cb(pa_reserve_wrapper
*r
, void *forced
, struct userdata
*u
) {
142 if (pa_source_suspend(u
->source
, TRUE
, PA_SUSPEND_APPLICATION
) < 0)
143 return PA_HOOK_CANCEL
;
148 static void reserve_done(struct userdata
*u
) {
151 if (u
->reserve_slot
) {
152 pa_hook_slot_free(u
->reserve_slot
);
153 u
->reserve_slot
= NULL
;
157 pa_reserve_wrapper_unref(u
->reserve
);
162 static void reserve_update(struct userdata
*u
) {
163 const char *description
;
166 if (!u
->source
|| !u
->reserve
)
169 if ((description
= pa_proplist_gets(u
->source
->proplist
, PA_PROP_DEVICE_DESCRIPTION
)))
170 pa_reserve_wrapper_set_application_device_name(u
->reserve
, description
);
173 static int reserve_init(struct userdata
*u
, const char *dname
) {
182 if (pa_in_system_mode())
185 /* We are resuming, try to lock the device */
186 if (!(rname
= pa_alsa_get_reserve_name(dname
)))
189 u
->reserve
= pa_reserve_wrapper_get(u
->core
, rname
);
197 pa_assert(!u
->reserve_slot
);
198 u
->reserve_slot
= pa_hook_connect(pa_reserve_wrapper_hook(u
->reserve
), PA_HOOK_NORMAL
, (pa_hook_cb_t
) reserve_cb
, u
);
203 static pa_hook_result_t
monitor_cb(pa_reserve_monitor_wrapper
*w
, void* busy
, struct userdata
*u
) {
209 b
= PA_PTR_TO_UINT(busy
) && !u
->reserve
;
211 pa_source_suspend(u
->source
, b
, PA_SUSPEND_APPLICATION
);
215 static void monitor_done(struct userdata
*u
) {
218 if (u
->monitor_slot
) {
219 pa_hook_slot_free(u
->monitor_slot
);
220 u
->monitor_slot
= NULL
;
224 pa_reserve_monitor_wrapper_unref(u
->monitor
);
229 static int reserve_monitor_init(struct userdata
*u
, const char *dname
) {
235 if (pa_in_system_mode())
238 /* We are resuming, try to lock the device */
239 if (!(rname
= pa_alsa_get_reserve_name(dname
)))
242 u
->monitor
= pa_reserve_monitor_wrapper_get(u
->core
, rname
);
248 pa_assert(!u
->monitor_slot
);
249 u
->monitor_slot
= pa_hook_connect(pa_reserve_monitor_wrapper_hook(u
->monitor
), PA_HOOK_NORMAL
, (pa_hook_cb_t
) monitor_cb
, u
);
254 static void fix_min_sleep_wakeup(struct userdata
*u
) {
255 size_t max_use
, max_use_2
;
257 pa_assert(u
->use_tsched
);
259 max_use
= u
->hwbuf_size
- u
->hwbuf_unused
;
260 max_use_2
= pa_frame_align(max_use
/2, &u
->source
->sample_spec
);
262 u
->min_sleep
= pa_usec_to_bytes(TSCHED_MIN_SLEEP_USEC
, &u
->source
->sample_spec
);
263 u
->min_sleep
= PA_CLAMP(u
->min_sleep
, u
->frame_size
, max_use_2
);
265 u
->min_wakeup
= pa_usec_to_bytes(TSCHED_MIN_WAKEUP_USEC
, &u
->source
->sample_spec
);
266 u
->min_wakeup
= PA_CLAMP(u
->min_wakeup
, u
->frame_size
, max_use_2
);
269 static void fix_tsched_watermark(struct userdata
*u
) {
272 pa_assert(u
->use_tsched
);
274 max_use
= u
->hwbuf_size
- u
->hwbuf_unused
;
276 if (u
->tsched_watermark
> max_use
- u
->min_sleep
)
277 u
->tsched_watermark
= max_use
- u
->min_sleep
;
279 if (u
->tsched_watermark
< u
->min_wakeup
)
280 u
->tsched_watermark
= u
->min_wakeup
;
283 static void increase_watermark(struct userdata
*u
) {
284 size_t old_watermark
;
285 pa_usec_t old_min_latency
, new_min_latency
;
288 pa_assert(u
->use_tsched
);
290 /* First, just try to increase the watermark */
291 old_watermark
= u
->tsched_watermark
;
292 u
->tsched_watermark
= PA_MIN(u
->tsched_watermark
* 2, u
->tsched_watermark
+ u
->watermark_inc_step
);
293 fix_tsched_watermark(u
);
295 if (old_watermark
!= u
->tsched_watermark
) {
296 pa_log_info("Increasing wakeup watermark to %0.2f ms",
297 (double) pa_bytes_to_usec(u
->tsched_watermark
, &u
->source
->sample_spec
) / PA_USEC_PER_MSEC
);
301 /* Hmm, we cannot increase the watermark any further, hence let's raise the latency */
302 old_min_latency
= u
->source
->thread_info
.min_latency
;
303 new_min_latency
= PA_MIN(old_min_latency
* 2, old_min_latency
+ TSCHED_WATERMARK_INC_STEP_USEC
);
304 new_min_latency
= PA_MIN(new_min_latency
, u
->source
->thread_info
.max_latency
);
306 if (old_min_latency
!= new_min_latency
) {
307 pa_log_info("Increasing minimal latency to %0.2f ms",
308 (double) new_min_latency
/ PA_USEC_PER_MSEC
);
310 pa_source_set_latency_range_within_thread(u
->source
, new_min_latency
, u
->source
->thread_info
.max_latency
);
313 /* When we reach this we're officialy fucked! */
316 static void decrease_watermark(struct userdata
*u
) {
317 size_t old_watermark
;
321 pa_assert(u
->use_tsched
);
323 now
= pa_rtclock_now();
325 if (u
->watermark_dec_not_before
<= 0)
328 if (u
->watermark_dec_not_before
> now
)
331 old_watermark
= u
->tsched_watermark
;
333 if (u
->tsched_watermark
< u
->watermark_dec_step
)
334 u
->tsched_watermark
= u
->tsched_watermark
/ 2;
336 u
->tsched_watermark
= PA_MAX(u
->tsched_watermark
/ 2, u
->tsched_watermark
- u
->watermark_dec_step
);
338 fix_tsched_watermark(u
);
340 if (old_watermark
!= u
->tsched_watermark
)
341 pa_log_info("Decreasing wakeup watermark to %0.2f ms",
342 (double) pa_bytes_to_usec(u
->tsched_watermark
, &u
->source
->sample_spec
) / PA_USEC_PER_MSEC
);
344 /* We don't change the latency range*/
347 u
->watermark_dec_not_before
= now
+ TSCHED_WATERMARK_VERIFY_AFTER_USEC
;
350 static pa_usec_t
hw_sleep_time(struct userdata
*u
, pa_usec_t
*sleep_usec
, pa_usec_t
*process_usec
) {
353 pa_assert(sleep_usec
);
354 pa_assert(process_usec
);
357 pa_assert(u
->use_tsched
);
359 usec
= pa_source_get_requested_latency_within_thread(u
->source
);
361 if (usec
== (pa_usec_t
) -1)
362 usec
= pa_bytes_to_usec(u
->hwbuf_size
, &u
->source
->sample_spec
);
364 wm
= pa_bytes_to_usec(u
->tsched_watermark
, &u
->source
->sample_spec
);
369 *sleep_usec
= usec
- wm
;
373 pa_log_debug("Buffer time: %lu ms; Sleep time: %lu ms; Process time: %lu ms",
374 (unsigned long) (usec
/ PA_USEC_PER_MSEC
),
375 (unsigned long) (*sleep_usec
/ PA_USEC_PER_MSEC
),
376 (unsigned long) (*process_usec
/ PA_USEC_PER_MSEC
));
382 static int try_recover(struct userdata
*u
, const char *call
, int err
) {
387 pa_log_debug("%s: %s", call
, pa_alsa_strerror(err
));
389 pa_assert(err
!= -EAGAIN
);
392 pa_log_debug("%s: Buffer overrun!", call
);
394 if (err
== -ESTRPIPE
)
395 pa_log_debug("%s: System suspended!", call
);
397 if ((err
= snd_pcm_recover(u
->pcm_handle
, err
, 1)) < 0) {
398 pa_log("%s: %s", call
, pa_alsa_strerror(err
));
406 static size_t check_left_to_record(struct userdata
*u
, size_t n_bytes
, pa_bool_t on_timeout
) {
407 size_t left_to_record
;
408 size_t rec_space
= u
->hwbuf_size
- u
->hwbuf_unused
;
409 pa_bool_t overrun
= FALSE
;
411 /* We use <= instead of < for this check here because an overrun
412 * only happens after the last sample was processed, not already when
413 * it is removed from the buffer. This is particularly important
414 * when block transfer is used. */
416 if (n_bytes
<= rec_space
)
417 left_to_record
= rec_space
- n_bytes
;
420 /* We got a dropout. What a mess! */
428 if (pa_log_ratelimit())
429 pa_log_info("Overrun!");
433 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
);
437 pa_bool_t reset_not_before
= TRUE
;
439 if (overrun
|| left_to_record
< u
->watermark_inc_threshold
)
440 increase_watermark(u
);
441 else if (left_to_record
> u
->watermark_dec_threshold
) {
442 reset_not_before
= FALSE
;
444 /* We decrease the watermark only if have actually been
445 * woken up by a timeout. If something else woke us up
446 * it's too easy to fulfill the deadlines... */
449 decrease_watermark(u
);
452 if (reset_not_before
)
453 u
->watermark_dec_not_before
= 0;
456 return left_to_record
;
459 static int mmap_read(struct userdata
*u
, pa_usec_t
*sleep_usec
, pa_bool_t polled
, pa_bool_t on_timeout
) {
460 pa_bool_t work_done
= FALSE
;
461 pa_usec_t max_sleep_usec
= 0, process_usec
= 0;
462 size_t left_to_record
;
466 pa_source_assert_ref(u
->source
);
469 hw_sleep_time(u
, &max_sleep_usec
, &process_usec
);
475 pa_bool_t after_avail
= TRUE
;
477 if (PA_UNLIKELY((n
= pa_alsa_safe_avail(u
->pcm_handle
, u
->hwbuf_size
, &u
->source
->sample_spec
)) < 0)) {
479 if ((r
= try_recover(u
, "snd_pcm_avail", (int) n
)) == 0)
485 n_bytes
= (size_t) n
* u
->frame_size
;
488 pa_log_debug("avail: %lu", (unsigned long) n_bytes
);
491 left_to_record
= check_left_to_record(u
, n_bytes
, on_timeout
);
496 pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
) > process_usec
+max_sleep_usec
/2) {
498 pa_log_debug("Not reading, because too early.");
503 if (PA_UNLIKELY(n_bytes
<= 0)) {
507 char *dn
= pa_alsa_get_driver_name_by_pcm(u
->pcm_handle
);
508 pa_log(_("ALSA woke us up to read new data from the device, but there was actually nothing to read!\n"
509 "Most likely this is a bug in the ALSA driver '%s'. Please report this issue to the ALSA developers.\n"
510 "We were woken up with POLLIN set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail."),
516 pa_log_debug("Not reading, because not necessary.");
523 pa_log_debug("Not filling up, because already too many iterations.");
532 pa_log_debug("Reading");
537 const snd_pcm_channel_area_t
*areas
;
538 snd_pcm_uframes_t offset
, frames
;
541 snd_pcm_sframes_t sframes
;
543 frames
= (snd_pcm_uframes_t
) (n_bytes
/ u
->frame_size
);
545 /* pa_log_debug("%lu frames to read", (unsigned long) frames); */
547 if (PA_UNLIKELY((err
= pa_alsa_safe_mmap_begin(u
->pcm_handle
, &areas
, &offset
, &frames
, u
->hwbuf_size
, &u
->source
->sample_spec
)) < 0)) {
549 if (!after_avail
&& err
== -EAGAIN
)
552 if ((r
= try_recover(u
, "snd_pcm_mmap_begin", err
)) == 0)
558 /* Make sure that if these memblocks need to be copied they will fit into one slot */
559 if (frames
> pa_mempool_block_size_max(u
->source
->core
->mempool
)/u
->frame_size
)
560 frames
= pa_mempool_block_size_max(u
->source
->core
->mempool
)/u
->frame_size
;
562 if (!after_avail
&& frames
== 0)
565 pa_assert(frames
> 0);
568 /* Check these are multiples of 8 bit */
569 pa_assert((areas
[0].first
& 7) == 0);
570 pa_assert((areas
[0].step
& 7)== 0);
572 /* We assume a single interleaved memory buffer */
573 pa_assert((areas
[0].first
>> 3) == 0);
574 pa_assert((areas
[0].step
>> 3) == u
->frame_size
);
576 p
= (uint8_t*) areas
[0].addr
+ (offset
* u
->frame_size
);
578 chunk
.memblock
= pa_memblock_new_fixed(u
->core
->mempool
, p
, frames
* u
->frame_size
, TRUE
);
579 chunk
.length
= pa_memblock_get_length(chunk
.memblock
);
582 pa_source_post(u
->source
, &chunk
);
583 pa_memblock_unref_fixed(chunk
.memblock
);
585 if (PA_UNLIKELY((sframes
= snd_pcm_mmap_commit(u
->pcm_handle
, offset
, frames
)) < 0)) {
587 if ((r
= try_recover(u
, "snd_pcm_mmap_commit", (int) sframes
)) == 0)
595 u
->read_count
+= frames
* u
->frame_size
;
598 pa_log_debug("Read %lu bytes (of possible %lu bytes)", (unsigned long) (frames
* u
->frame_size
), (unsigned long) n_bytes
);
601 if ((size_t) frames
* u
->frame_size
>= n_bytes
)
604 n_bytes
-= (size_t) frames
* u
->frame_size
;
609 *sleep_usec
= pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
);
611 if (*sleep_usec
> process_usec
)
612 *sleep_usec
-= process_usec
;
617 return work_done
? 1 : 0;
620 static int unix_read(struct userdata
*u
, pa_usec_t
*sleep_usec
, pa_bool_t polled
, pa_bool_t on_timeout
) {
621 int work_done
= FALSE
;
622 pa_usec_t max_sleep_usec
= 0, process_usec
= 0;
623 size_t left_to_record
;
627 pa_source_assert_ref(u
->source
);
630 hw_sleep_time(u
, &max_sleep_usec
, &process_usec
);
636 pa_bool_t after_avail
= TRUE
;
638 if (PA_UNLIKELY((n
= pa_alsa_safe_avail(u
->pcm_handle
, u
->hwbuf_size
, &u
->source
->sample_spec
)) < 0)) {
640 if ((r
= try_recover(u
, "snd_pcm_avail", (int) n
)) == 0)
646 n_bytes
= (size_t) n
* u
->frame_size
;
647 left_to_record
= check_left_to_record(u
, n_bytes
, on_timeout
);
652 pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
) > process_usec
+max_sleep_usec
/2)
655 if (PA_UNLIKELY(n_bytes
<= 0)) {
659 char *dn
= pa_alsa_get_driver_name_by_pcm(u
->pcm_handle
);
660 pa_log(_("ALSA woke us up to read new data from the device, but there was actually nothing to read!\n"
661 "Most likely this is a bug in the ALSA driver '%s'. Please report this issue to the ALSA developers.\n"
662 "We were woken up with POLLIN set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail."),
672 pa_log_debug("Not filling up, because already too many iterations.");
682 snd_pcm_sframes_t frames
;
685 chunk
.memblock
= pa_memblock_new(u
->core
->mempool
, (size_t) -1);
687 frames
= (snd_pcm_sframes_t
) (pa_memblock_get_length(chunk
.memblock
) / u
->frame_size
);
689 if (frames
> (snd_pcm_sframes_t
) (n_bytes
/u
->frame_size
))
690 frames
= (snd_pcm_sframes_t
) (n_bytes
/u
->frame_size
);
692 /* pa_log_debug("%lu frames to read", (unsigned long) n); */
694 p
= pa_memblock_acquire(chunk
.memblock
);
695 frames
= snd_pcm_readi(u
->pcm_handle
, (uint8_t*) p
, (snd_pcm_uframes_t
) frames
);
696 pa_memblock_release(chunk
.memblock
);
698 if (PA_UNLIKELY(frames
< 0)) {
699 pa_memblock_unref(chunk
.memblock
);
701 if (!after_avail
&& (int) frames
== -EAGAIN
)
704 if ((r
= try_recover(u
, "snd_pcm_readi", (int) frames
)) == 0)
710 if (!after_avail
&& frames
== 0) {
711 pa_memblock_unref(chunk
.memblock
);
715 pa_assert(frames
> 0);
719 chunk
.length
= (size_t) frames
* u
->frame_size
;
721 pa_source_post(u
->source
, &chunk
);
722 pa_memblock_unref(chunk
.memblock
);
726 u
->read_count
+= frames
* u
->frame_size
;
728 /* pa_log_debug("read %lu frames", (unsigned long) frames); */
730 if ((size_t) frames
* u
->frame_size
>= n_bytes
)
733 n_bytes
-= (size_t) frames
* u
->frame_size
;
738 *sleep_usec
= pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
);
740 if (*sleep_usec
> process_usec
)
741 *sleep_usec
-= process_usec
;
746 return work_done
? 1 : 0;
749 static void update_smoother(struct userdata
*u
) {
750 snd_pcm_sframes_t delay
= 0;
753 pa_usec_t now1
= 0, now2
;
754 snd_pcm_status_t
*status
;
756 snd_pcm_status_alloca(&status
);
759 pa_assert(u
->pcm_handle
);
761 /* Let's update the time smoother */
763 if (PA_UNLIKELY((err
= pa_alsa_safe_delay(u
->pcm_handle
, &delay
, u
->hwbuf_size
, &u
->source
->sample_spec
)) < 0)) {
764 pa_log_warn("Failed to get delay: %s", pa_alsa_strerror(err
));
768 if (PA_UNLIKELY((err
= snd_pcm_status(u
->pcm_handle
, status
)) < 0))
769 pa_log_warn("Failed to get timestamp: %s", pa_alsa_strerror(err
));
771 snd_htimestamp_t htstamp
= { 0, 0 };
772 snd_pcm_status_get_htstamp(status
, &htstamp
);
773 now1
= pa_timespec_load(&htstamp
);
776 /* Hmm, if the timestamp is 0, then it wasn't set and we take the current time */
778 now1
= pa_rtclock_now();
780 /* check if the time since the last update is bigger than the interval */
781 if (u
->last_smoother_update
> 0)
782 if (u
->last_smoother_update
+ u
->smoother_interval
> now1
)
785 position
= u
->read_count
+ ((uint64_t) delay
* (uint64_t) u
->frame_size
);
786 now2
= pa_bytes_to_usec(position
, &u
->source
->sample_spec
);
788 pa_smoother_put(u
->smoother
, now1
, now2
);
790 u
->last_smoother_update
= now1
;
791 /* exponentially increase the update interval up to the MAX limit */
792 u
->smoother_interval
= PA_MIN (u
->smoother_interval
* 2, SMOOTHER_MAX_INTERVAL
);
795 static pa_usec_t
source_get_latency(struct userdata
*u
) {
797 pa_usec_t now1
, now2
;
801 now1
= pa_rtclock_now();
802 now2
= pa_smoother_get(u
->smoother
, now1
);
804 delay
= (int64_t) now2
- (int64_t) pa_bytes_to_usec(u
->read_count
, &u
->source
->sample_spec
);
806 return delay
>= 0 ? (pa_usec_t
) delay
: 0;
809 static int build_pollfd(struct userdata
*u
) {
811 pa_assert(u
->pcm_handle
);
813 if (u
->alsa_rtpoll_item
)
814 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
816 if (!(u
->alsa_rtpoll_item
= pa_alsa_build_pollfd(u
->pcm_handle
, u
->rtpoll
)))
822 static int suspend(struct userdata
*u
) {
824 pa_assert(u
->pcm_handle
);
826 pa_smoother_pause(u
->smoother
, pa_rtclock_now());
829 snd_pcm_close(u
->pcm_handle
);
830 u
->pcm_handle
= NULL
;
832 if (u
->alsa_rtpoll_item
) {
833 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
834 u
->alsa_rtpoll_item
= NULL
;
837 pa_log_info("Device suspended...");
842 static int update_sw_params(struct userdata
*u
) {
843 snd_pcm_uframes_t avail_min
;
848 /* Use the full buffer if noone asked us for anything specific */
854 if ((latency
= pa_source_get_requested_latency_within_thread(u
->source
)) != (pa_usec_t
) -1) {
857 pa_log_debug("latency set to %0.2fms", (double) latency
/ PA_USEC_PER_MSEC
);
859 b
= pa_usec_to_bytes(latency
, &u
->source
->sample_spec
);
861 /* We need at least one sample in our buffer */
863 if (PA_UNLIKELY(b
< u
->frame_size
))
866 u
->hwbuf_unused
= PA_LIKELY(b
< u
->hwbuf_size
) ? (u
->hwbuf_size
- b
) : 0;
869 fix_min_sleep_wakeup(u
);
870 fix_tsched_watermark(u
);
873 pa_log_debug("hwbuf_unused=%lu", (unsigned long) u
->hwbuf_unused
);
878 pa_usec_t sleep_usec
, process_usec
;
880 hw_sleep_time(u
, &sleep_usec
, &process_usec
);
881 avail_min
+= pa_usec_to_bytes(sleep_usec
, &u
->source
->sample_spec
) / u
->frame_size
;
884 pa_log_debug("setting avail_min=%lu", (unsigned long) avail_min
);
886 if ((err
= pa_alsa_set_sw_params(u
->pcm_handle
, avail_min
, !u
->use_tsched
)) < 0) {
887 pa_log("Failed to set software parameters: %s", pa_alsa_strerror(err
));
894 static int unsuspend(struct userdata
*u
) {
898 snd_pcm_uframes_t period_size
, buffer_size
;
901 pa_assert(!u
->pcm_handle
);
903 pa_log_info("Trying resume...");
905 if ((err
= snd_pcm_open(&u
->pcm_handle
, u
->device_name
, SND_PCM_STREAM_CAPTURE
,
907 SND_PCM_NO_AUTO_RESAMPLE
|
908 SND_PCM_NO_AUTO_CHANNELS
|
909 SND_PCM_NO_AUTO_FORMAT
)) < 0) {
910 pa_log("Error opening PCM device %s: %s", u
->device_name
, pa_alsa_strerror(err
));
914 ss
= u
->source
->sample_spec
;
915 period_size
= u
->fragment_size
/ u
->frame_size
;
916 buffer_size
= u
->hwbuf_size
/ u
->frame_size
;
920 if ((err
= pa_alsa_set_hw_params(u
->pcm_handle
, &ss
, &period_size
, &buffer_size
, 0, &b
, &d
, TRUE
)) < 0) {
921 pa_log("Failed to set hardware parameters: %s", pa_alsa_strerror(err
));
925 if (b
!= u
->use_mmap
|| d
!= u
->use_tsched
) {
926 pa_log_warn("Resume failed, couldn't get original access mode.");
930 if (!pa_sample_spec_equal(&ss
, &u
->source
->sample_spec
)) {
931 pa_log_warn("Resume failed, couldn't restore original sample settings.");
935 if (period_size
*u
->frame_size
!= u
->fragment_size
||
936 buffer_size
*u
->frame_size
!= u
->hwbuf_size
) {
937 pa_log_warn("Resume failed, couldn't restore original fragment settings. (Old: %lu/%lu, New %lu/%lu)",
938 (unsigned long) u
->hwbuf_size
, (unsigned long) u
->fragment_size
,
939 (unsigned long) (buffer_size
*u
->frame_size
), (unsigned long) (period_size
*u
->frame_size
));
943 if (update_sw_params(u
) < 0)
946 if (build_pollfd(u
) < 0)
949 /* FIXME: We need to reload the volume somehow */
952 pa_smoother_reset(u
->smoother
, pa_rtclock_now(), TRUE
);
953 u
->smoother_interval
= SMOOTHER_MIN_INTERVAL
;
954 u
->last_smoother_update
= 0;
958 pa_log_info("Resumed successfully...");
964 snd_pcm_close(u
->pcm_handle
);
965 u
->pcm_handle
= NULL
;
971 static int source_process_msg(pa_msgobject
*o
, int code
, void *data
, int64_t offset
, pa_memchunk
*chunk
) {
972 struct userdata
*u
= PA_SOURCE(o
)->userdata
;
976 case PA_SOURCE_MESSAGE_GET_LATENCY
: {
980 r
= source_get_latency(u
);
982 *((pa_usec_t
*) data
) = r
;
987 case PA_SOURCE_MESSAGE_SET_STATE
:
989 switch ((pa_source_state_t
) PA_PTR_TO_UINT(data
)) {
991 case PA_SOURCE_SUSPENDED
: {
993 pa_assert(PA_SOURCE_IS_OPENED(u
->source
->thread_info
.state
));
995 if ((r
= suspend(u
)) < 0)
1001 case PA_SOURCE_IDLE
:
1002 case PA_SOURCE_RUNNING
: {
1005 if (u
->source
->thread_info
.state
== PA_SOURCE_INIT
) {
1006 if (build_pollfd(u
) < 0)
1010 if (u
->source
->thread_info
.state
== PA_SOURCE_SUSPENDED
) {
1011 if ((r
= unsuspend(u
)) < 0)
1018 case PA_SOURCE_UNLINKED
:
1019 case PA_SOURCE_INIT
:
1020 case PA_SOURCE_INVALID_STATE
:
1027 return pa_source_process_msg(o
, code
, data
, offset
, chunk
);
1030 /* Called from main context */
1031 static int source_set_state_cb(pa_source
*s
, pa_source_state_t new_state
) {
1032 pa_source_state_t old_state
;
1035 pa_source_assert_ref(s
);
1036 pa_assert_se(u
= s
->userdata
);
1038 old_state
= pa_source_get_state(u
->source
);
1040 if (PA_SINK_IS_OPENED(old_state
) && new_state
== PA_SINK_SUSPENDED
)
1042 else if (old_state
== PA_SINK_SUSPENDED
&& PA_SINK_IS_OPENED(new_state
))
1043 if (reserve_init(u
, u
->device_name
) < 0)
1044 return -PA_ERR_BUSY
;
1049 static int mixer_callback(snd_mixer_elem_t
*elem
, unsigned int mask
) {
1050 struct userdata
*u
= snd_mixer_elem_get_callback_private(elem
);
1053 pa_assert(u
->mixer_handle
);
1055 if (mask
== SND_CTL_EVENT_MASK_REMOVE
)
1058 if (u
->source
->suspend_cause
& PA_SUSPEND_SESSION
)
1061 if (mask
& SND_CTL_EVENT_MASK_VALUE
) {
1062 pa_source_get_volume(u
->source
, TRUE
);
1063 pa_source_get_mute(u
->source
, TRUE
);
1069 static void source_get_volume_cb(pa_source
*s
) {
1070 struct userdata
*u
= s
->userdata
;
1072 char t
[PA_CVOLUME_SNPRINT_MAX
];
1075 pa_assert(u
->mixer_path
);
1076 pa_assert(u
->mixer_handle
);
1078 if (pa_alsa_path_get_volume(u
->mixer_path
, u
->mixer_handle
, &s
->channel_map
, &r
) < 0)
1081 /* Shift down by the base volume, so that 0dB becomes maximum volume */
1082 pa_sw_cvolume_multiply_scalar(&r
, &r
, s
->base_volume
);
1084 pa_log_debug("Read hardware volume: %s", pa_cvolume_snprint(t
, sizeof(t
), &r
));
1086 if (pa_cvolume_equal(&u
->hardware_volume
, &r
))
1089 s
->volume
= u
->hardware_volume
= r
;
1091 /* Hmm, so the hardware volume changed, let's reset our software volume */
1092 if (u
->mixer_path
->has_dB
)
1093 pa_source_set_soft_volume(s
, NULL
);
1096 static void source_set_volume_cb(pa_source
*s
) {
1097 struct userdata
*u
= s
->userdata
;
1099 char t
[PA_CVOLUME_SNPRINT_MAX
];
1102 pa_assert(u
->mixer_path
);
1103 pa_assert(u
->mixer_handle
);
1105 /* Shift up by the base volume */
1106 pa_sw_cvolume_divide_scalar(&r
, &s
->volume
, s
->base_volume
);
1108 if (pa_alsa_path_set_volume(u
->mixer_path
, u
->mixer_handle
, &s
->channel_map
, &r
) < 0)
1111 /* Shift down by the base volume, so that 0dB becomes maximum volume */
1112 pa_sw_cvolume_multiply_scalar(&r
, &r
, s
->base_volume
);
1114 u
->hardware_volume
= r
;
1116 if (u
->mixer_path
->has_dB
) {
1117 pa_cvolume new_soft_volume
;
1118 pa_bool_t accurate_enough
;
1120 /* Match exactly what the user requested by software */
1121 pa_sw_cvolume_divide(&new_soft_volume
, &s
->volume
, &u
->hardware_volume
);
1123 /* If the adjustment to do in software is only minimal we
1124 * can skip it. That saves us CPU at the expense of a bit of
1127 (pa_cvolume_min(&new_soft_volume
) >= (PA_VOLUME_NORM
- VOLUME_ACCURACY
)) &&
1128 (pa_cvolume_max(&new_soft_volume
) <= (PA_VOLUME_NORM
+ VOLUME_ACCURACY
));
1130 pa_log_debug("Requested volume: %s", pa_cvolume_snprint(t
, sizeof(t
), &s
->volume
));
1131 pa_log_debug("Got hardware volume: %s", pa_cvolume_snprint(t
, sizeof(t
), &u
->hardware_volume
));
1132 pa_log_debug("Calculated software volume: %s (accurate-enough=%s)", pa_cvolume_snprint(t
, sizeof(t
), &new_soft_volume
),
1133 pa_yes_no(accurate_enough
));
1135 if (!accurate_enough
)
1136 s
->soft_volume
= new_soft_volume
;
1139 pa_log_debug("Wrote hardware volume: %s", pa_cvolume_snprint(t
, sizeof(t
), &r
));
1141 /* We can't match exactly what the user requested, hence let's
1142 * at least tell the user about it */
1148 static void source_get_mute_cb(pa_source
*s
) {
1149 struct userdata
*u
= s
->userdata
;
1153 pa_assert(u
->mixer_path
);
1154 pa_assert(u
->mixer_handle
);
1156 if (pa_alsa_path_get_mute(u
->mixer_path
, u
->mixer_handle
, &b
) < 0)
1162 static void source_set_mute_cb(pa_source
*s
) {
1163 struct userdata
*u
= s
->userdata
;
1166 pa_assert(u
->mixer_path
);
1167 pa_assert(u
->mixer_handle
);
1169 pa_alsa_path_set_mute(u
->mixer_path
, u
->mixer_handle
, s
->muted
);
1172 static int source_set_port_cb(pa_source
*s
, pa_device_port
*p
) {
1173 struct userdata
*u
= s
->userdata
;
1174 pa_alsa_port_data
*data
;
1178 pa_assert(u
->mixer_handle
);
1180 data
= PA_DEVICE_PORT_DATA(p
);
1182 pa_assert_se(u
->mixer_path
= data
->path
);
1183 pa_alsa_path_select(u
->mixer_path
, u
->mixer_handle
);
1185 if (u
->mixer_path
->has_volume
&& u
->mixer_path
->has_dB
) {
1186 s
->base_volume
= pa_sw_volume_from_dB(-u
->mixer_path
->max_dB
);
1187 s
->n_volume_steps
= PA_VOLUME_NORM
+1;
1189 pa_log_info("Fixing base volume to %0.2f dB", pa_sw_volume_to_dB(s
->base_volume
));
1191 s
->base_volume
= PA_VOLUME_NORM
;
1192 s
->n_volume_steps
= u
->mixer_path
->max_volume
- u
->mixer_path
->min_volume
+ 1;
1196 pa_alsa_setting_select(data
->setting
, u
->mixer_handle
);
1206 static void source_update_requested_latency_cb(pa_source
*s
) {
1207 struct userdata
*u
= s
->userdata
;
1209 pa_assert(u
->use_tsched
);
1214 update_sw_params(u
);
1217 static void thread_func(void *userdata
) {
1218 struct userdata
*u
= userdata
;
1219 unsigned short revents
= 0;
1223 pa_log_debug("Thread starting up");
1225 if (u
->core
->realtime_scheduling
)
1226 pa_make_realtime(u
->core
->realtime_priority
);
1228 pa_thread_mq_install(&u
->thread_mq
);
1234 pa_log_debug("Loop");
1237 /* Read some data and pass it to the sources */
1238 if (PA_SOURCE_IS_OPENED(u
->source
->thread_info
.state
)) {
1240 pa_usec_t sleep_usec
= 0;
1241 pa_bool_t on_timeout
= pa_rtpoll_timer_elapsed(u
->rtpoll
);
1244 pa_log_info("Starting capture.");
1245 snd_pcm_start(u
->pcm_handle
);
1247 pa_smoother_resume(u
->smoother
, pa_rtclock_now(), TRUE
);
1253 work_done
= mmap_read(u
, &sleep_usec
, revents
& POLLIN
, on_timeout
);
1255 work_done
= unix_read(u
, &sleep_usec
, revents
& POLLIN
, on_timeout
);
1260 /* pa_log_debug("work_done = %i", work_done); */
1265 if (u
->use_tsched
) {
1268 /* OK, the capture buffer is now empty, let's
1269 * calculate when to wake up next */
1271 /* pa_log_debug("Waking up in %0.2fms (sound card clock).", (double) sleep_usec / PA_USEC_PER_MSEC); */
1273 /* Convert from the sound card time domain to the
1274 * system time domain */
1275 cusec
= pa_smoother_translate(u
->smoother
, pa_rtclock_now(), sleep_usec
);
1277 /* pa_log_debug("Waking up in %0.2fms (system clock).", (double) cusec / PA_USEC_PER_MSEC); */
1279 /* We don't trust the conversion, so we wake up whatever comes first */
1280 pa_rtpoll_set_timer_relative(u
->rtpoll
, PA_MIN(sleep_usec
, cusec
));
1282 } else if (u
->use_tsched
)
1284 /* OK, we're in an invalid state, let's disable our timers */
1285 pa_rtpoll_set_timer_disabled(u
->rtpoll
);
1287 /* Hmm, nothing to do. Let's sleep */
1288 if ((ret
= pa_rtpoll_run(u
->rtpoll
, TRUE
)) < 0)
1294 /* Tell ALSA about this and process its response */
1295 if (PA_SOURCE_IS_OPENED(u
->source
->thread_info
.state
)) {
1296 struct pollfd
*pollfd
;
1300 pollfd
= pa_rtpoll_item_get_pollfd(u
->alsa_rtpoll_item
, &n
);
1302 if ((err
= snd_pcm_poll_descriptors_revents(u
->pcm_handle
, pollfd
, n
, &revents
)) < 0) {
1303 pa_log("snd_pcm_poll_descriptors_revents() failed: %s", pa_alsa_strerror(err
));
1307 if (revents
& ~POLLIN
) {
1308 if (pa_alsa_recover_from_poll(u
->pcm_handle
, revents
) < 0)
1312 } else if (revents
&& u
->use_tsched
&& pa_log_ratelimit())
1313 pa_log_debug("Wakeup from ALSA!");
1320 /* If this was no regular exit from the loop we have to continue
1321 * processing messages until we received PA_MESSAGE_SHUTDOWN */
1322 pa_asyncmsgq_post(u
->thread_mq
.outq
, PA_MSGOBJECT(u
->core
), PA_CORE_MESSAGE_UNLOAD_MODULE
, u
->module
, 0, NULL
, NULL
);
1323 pa_asyncmsgq_wait_for(u
->thread_mq
.inq
, PA_MESSAGE_SHUTDOWN
);
1326 pa_log_debug("Thread shutting down");
1329 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
) {
1335 pa_assert(device_name
);
1337 if ((n
= pa_modargs_get_value(ma
, "source_name", NULL
))) {
1338 pa_source_new_data_set_name(data
, n
);
1339 data
->namereg_fail
= TRUE
;
1343 if ((n
= pa_modargs_get_value(ma
, "name", NULL
)))
1344 data
->namereg_fail
= TRUE
;
1346 n
= device_id
? device_id
: device_name
;
1347 data
->namereg_fail
= FALSE
;
1351 t
= pa_sprintf_malloc("alsa_input.%s.%s", n
, mapping
->name
);
1353 t
= pa_sprintf_malloc("alsa_input.%s", n
);
1355 pa_source_new_data_set_name(data
, t
);
1359 static void find_mixer(struct userdata
*u
, pa_alsa_mapping
*mapping
, const char *element
, pa_bool_t ignore_dB
) {
1361 if (!mapping
&& !element
)
1364 if (!(u
->mixer_handle
= pa_alsa_open_mixer_for_pcm(u
->pcm_handle
, &u
->control_device
))) {
1365 pa_log_info("Failed to find a working mixer device.");
1371 if (!(u
->mixer_path
= pa_alsa_path_synthesize(element
, PA_ALSA_DIRECTION_INPUT
)))
1374 if (pa_alsa_path_probe(u
->mixer_path
, u
->mixer_handle
, ignore_dB
) < 0)
1377 pa_log_debug("Probed mixer path %s:", u
->mixer_path
->name
);
1378 pa_alsa_path_dump(u
->mixer_path
);
1381 if (!(u
->mixer_path_set
= pa_alsa_path_set_new(mapping
, PA_ALSA_DIRECTION_INPUT
)))
1384 pa_alsa_path_set_probe(u
->mixer_path_set
, u
->mixer_handle
, ignore_dB
);
1386 pa_log_debug("Probed mixer paths:");
1387 pa_alsa_path_set_dump(u
->mixer_path_set
);
1394 if (u
->mixer_path_set
) {
1395 pa_alsa_path_set_free(u
->mixer_path_set
);
1396 u
->mixer_path_set
= NULL
;
1397 } else if (u
->mixer_path
) {
1398 pa_alsa_path_free(u
->mixer_path
);
1399 u
->mixer_path
= NULL
;
1402 if (u
->mixer_handle
) {
1403 snd_mixer_close(u
->mixer_handle
);
1404 u
->mixer_handle
= NULL
;
1408 static int setup_mixer(struct userdata
*u
, pa_bool_t ignore_dB
) {
1411 if (!u
->mixer_handle
)
1414 if (u
->source
->active_port
) {
1415 pa_alsa_port_data
*data
;
1417 /* We have a list of supported paths, so let's activate the
1418 * one that has been chosen as active */
1420 data
= PA_DEVICE_PORT_DATA(u
->source
->active_port
);
1421 u
->mixer_path
= data
->path
;
1423 pa_alsa_path_select(data
->path
, u
->mixer_handle
);
1426 pa_alsa_setting_select(data
->setting
, u
->mixer_handle
);
1430 if (!u
->mixer_path
&& u
->mixer_path_set
)
1431 u
->mixer_path
= u
->mixer_path_set
->paths
;
1433 if (u
->mixer_path
) {
1434 /* Hmm, we have only a single path, then let's activate it */
1436 pa_alsa_path_select(u
->mixer_path
, u
->mixer_handle
);
1438 if (u
->mixer_path
->settings
)
1439 pa_alsa_setting_select(u
->mixer_path
->settings
, u
->mixer_handle
);
1444 if (!u
->mixer_path
->has_volume
)
1445 pa_log_info("Driver does not support hardware volume control, falling back to software volume control.");
1448 if (u
->mixer_path
->has_dB
) {
1449 pa_log_info("Hardware volume ranges from %0.2f dB to %0.2f dB.", u
->mixer_path
->min_dB
, u
->mixer_path
->max_dB
);
1451 u
->source
->base_volume
= pa_sw_volume_from_dB(-u
->mixer_path
->max_dB
);
1452 u
->source
->n_volume_steps
= PA_VOLUME_NORM
+1;
1454 if (u
->mixer_path
->max_dB
> 0.0)
1455 pa_log_info("Fixing base volume to %0.2f dB", pa_sw_volume_to_dB(u
->source
->base_volume
));
1457 pa_log_info("No particular base volume set, fixing to 0 dB");
1460 pa_log_info("Hardware volume ranges from %li to %li.", u
->mixer_path
->min_volume
, u
->mixer_path
->max_volume
);
1461 u
->source
->base_volume
= PA_VOLUME_NORM
;
1462 u
->source
->n_volume_steps
= u
->mixer_path
->max_volume
- u
->mixer_path
->min_volume
+ 1;
1465 u
->source
->get_volume
= source_get_volume_cb
;
1466 u
->source
->set_volume
= source_set_volume_cb
;
1468 u
->source
->flags
|= PA_SOURCE_HW_VOLUME_CTRL
| (u
->mixer_path
->has_dB
? PA_SOURCE_DECIBEL_VOLUME
: 0);
1469 pa_log_info("Using hardware volume control. Hardware dB scale %s.", u
->mixer_path
->has_dB
? "supported" : "not supported");
1472 if (!u
->mixer_path
->has_mute
) {
1473 pa_log_info("Driver does not support hardware mute control, falling back to software mute control.");
1475 u
->source
->get_mute
= source_get_mute_cb
;
1476 u
->source
->set_mute
= source_set_mute_cb
;
1477 u
->source
->flags
|= PA_SOURCE_HW_MUTE_CTRL
;
1478 pa_log_info("Using hardware mute control.");
1481 u
->mixer_fdl
= pa_alsa_fdlist_new();
1483 if (pa_alsa_fdlist_set_mixer(u
->mixer_fdl
, u
->mixer_handle
, u
->core
->mainloop
) < 0) {
1484 pa_log("Failed to initialize file descriptor monitoring");
1488 if (u
->mixer_path_set
)
1489 pa_alsa_path_set_set_callback(u
->mixer_path_set
, u
->mixer_handle
, mixer_callback
, u
);
1491 pa_alsa_path_set_callback(u
->mixer_path
, u
->mixer_handle
, mixer_callback
, u
);
1496 pa_source
*pa_alsa_source_new(pa_module
*m
, pa_modargs
*ma
, const char*driver
, pa_card
*card
, pa_alsa_mapping
*mapping
) {
1498 struct userdata
*u
= NULL
;
1499 const char *dev_id
= NULL
;
1500 pa_sample_spec ss
, requested_ss
;
1502 uint32_t nfrags
, frag_size
, buffer_size
, tsched_size
, tsched_watermark
;
1503 snd_pcm_uframes_t period_frames
, buffer_frames
, tsched_frames
;
1505 pa_bool_t use_mmap
= TRUE
, b
, use_tsched
= TRUE
, d
, ignore_dB
= FALSE
, namereg_fail
= FALSE
;
1506 pa_source_new_data data
;
1507 pa_alsa_profile_set
*profile_set
= NULL
;
1512 ss
= m
->core
->default_sample_spec
;
1513 map
= m
->core
->default_channel_map
;
1514 if (pa_modargs_get_sample_spec_and_channel_map(ma
, &ss
, &map
, PA_CHANNEL_MAP_ALSA
) < 0) {
1515 pa_log("Failed to parse sample specification");
1520 frame_size
= pa_frame_size(&ss
);
1522 nfrags
= m
->core
->default_n_fragments
;
1523 frag_size
= (uint32_t) pa_usec_to_bytes(m
->core
->default_fragment_size_msec
*PA_USEC_PER_MSEC
, &ss
);
1525 frag_size
= (uint32_t) frame_size
;
1526 tsched_size
= (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_BUFFER_USEC
, &ss
);
1527 tsched_watermark
= (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_WATERMARK_USEC
, &ss
);
1529 if (pa_modargs_get_value_u32(ma
, "fragments", &nfrags
) < 0 ||
1530 pa_modargs_get_value_u32(ma
, "fragment_size", &frag_size
) < 0 ||
1531 pa_modargs_get_value_u32(ma
, "tsched_buffer_size", &tsched_size
) < 0 ||
1532 pa_modargs_get_value_u32(ma
, "tsched_buffer_watermark", &tsched_watermark
) < 0) {
1533 pa_log("Failed to parse buffer metrics");
1537 buffer_size
= nfrags
* frag_size
;
1539 period_frames
= frag_size
/frame_size
;
1540 buffer_frames
= buffer_size
/frame_size
;
1541 tsched_frames
= tsched_size
/frame_size
;
1543 if (pa_modargs_get_value_boolean(ma
, "mmap", &use_mmap
) < 0) {
1544 pa_log("Failed to parse mmap argument.");
1548 if (pa_modargs_get_value_boolean(ma
, "tsched", &use_tsched
) < 0) {
1549 pa_log("Failed to parse timer_scheduling argument.");
1553 if (pa_modargs_get_value_boolean(ma
, "ignore_dB", &ignore_dB
) < 0) {
1554 pa_log("Failed to parse ignore_dB argument.");
1558 use_tsched
= pa_alsa_may_tsched(use_tsched
);
1560 u
= pa_xnew0(struct userdata
, 1);
1563 u
->use_mmap
= use_mmap
;
1564 u
->use_tsched
= use_tsched
;
1566 u
->rtpoll
= pa_rtpoll_new();
1567 pa_thread_mq_init(&u
->thread_mq
, m
->core
->mainloop
, u
->rtpoll
);
1569 u
->smoother
= pa_smoother_new(
1570 DEFAULT_TSCHED_BUFFER_USEC
*2,
1571 DEFAULT_TSCHED_BUFFER_USEC
*2,
1577 u
->smoother_interval
= SMOOTHER_MIN_INTERVAL
;
1579 dev_id
= pa_modargs_get_value(
1581 pa_modargs_get_value(ma
, "device", DEFAULT_DEVICE
));
1583 if (reserve_init(u
, dev_id
) < 0)
1586 if (reserve_monitor_init(u
, dev_id
) < 0)
1594 if (!(dev_id
= pa_modargs_get_value(ma
, "device_id", NULL
))) {
1595 pa_log("device_id= not set");
1599 if (!(u
->pcm_handle
= pa_alsa_open_by_device_id_mapping(
1603 SND_PCM_STREAM_CAPTURE
,
1604 &period_frames
, &buffer_frames
, tsched_frames
,
1608 } else if ((dev_id
= pa_modargs_get_value(ma
, "device_id", NULL
))) {
1610 if (!(profile_set
= pa_alsa_profile_set_new(NULL
, &map
)))
1613 if (!(u
->pcm_handle
= pa_alsa_open_by_device_id_auto(
1617 SND_PCM_STREAM_CAPTURE
,
1618 &period_frames
, &buffer_frames
, tsched_frames
,
1619 &b
, &d
, profile_set
, &mapping
)))
1624 if (!(u
->pcm_handle
= pa_alsa_open_by_device_string(
1625 pa_modargs_get_value(ma
, "device", DEFAULT_DEVICE
),
1628 SND_PCM_STREAM_CAPTURE
,
1629 &period_frames
, &buffer_frames
, tsched_frames
,
1634 pa_assert(u
->device_name
);
1635 pa_log_info("Successfully opened device %s.", u
->device_name
);
1637 if (pa_alsa_pcm_is_modem(u
->pcm_handle
)) {
1638 pa_log_notice("Device %s is modem, refusing further initialization.", u
->device_name
);
1643 pa_log_info("Selected mapping '%s' (%s).", mapping
->description
, mapping
->name
);
1645 if (use_mmap
&& !b
) {
1646 pa_log_info("Device doesn't support mmap(), falling back to UNIX read/write mode.");
1647 u
->use_mmap
= use_mmap
= FALSE
;
1650 if (use_tsched
&& (!b
|| !d
)) {
1651 pa_log_info("Cannot enable timer-based scheduling, falling back to sound IRQ scheduling.");
1652 u
->use_tsched
= use_tsched
= FALSE
;
1656 pa_log_info("Successfully enabled mmap() mode.");
1659 pa_log_info("Successfully enabled timer-based scheduling mode.");
1661 /* ALSA might tweak the sample spec, so recalculate the frame size */
1662 frame_size
= pa_frame_size(&ss
);
1664 find_mixer(u
, mapping
, pa_modargs_get_value(ma
, "control", NULL
), ignore_dB
);
1666 pa_source_new_data_init(&data
);
1667 data
.driver
= driver
;
1670 set_source_name(&data
, ma
, dev_id
, u
->device_name
, mapping
);
1672 /* We need to give pa_modargs_get_value_boolean() a pointer to a local
1673 * variable instead of using &data.namereg_fail directly, because
1674 * data.namereg_fail is a bitfield and taking the address of a bitfield
1675 * variable is impossible. */
1676 namereg_fail
= data
.namereg_fail
;
1677 if (pa_modargs_get_value_boolean(ma
, "namereg_fail", &namereg_fail
) < 0) {
1678 pa_log("Failed to parse boolean argument namereg_fail.");
1679 pa_source_new_data_done(&data
);
1682 data
.namereg_fail
= namereg_fail
;
1684 pa_source_new_data_set_sample_spec(&data
, &ss
);
1685 pa_source_new_data_set_channel_map(&data
, &map
);
1687 pa_alsa_init_proplist_pcm(m
->core
, data
.proplist
, u
->pcm_handle
);
1688 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_STRING
, u
->device_name
);
1689 pa_proplist_setf(data
.proplist
, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE
, "%lu", (unsigned long) (buffer_frames
* frame_size
));
1690 pa_proplist_setf(data
.proplist
, PA_PROP_DEVICE_BUFFERING_FRAGMENT_SIZE
, "%lu", (unsigned long) (period_frames
* frame_size
));
1691 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_ACCESS_MODE
, u
->use_tsched
? "mmap+timer" : (u
->use_mmap
? "mmap" : "serial"));
1694 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_PROFILE_NAME
, mapping
->name
);
1695 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_PROFILE_DESCRIPTION
, mapping
->description
);
1698 pa_alsa_init_description(data
.proplist
);
1700 if (u
->control_device
)
1701 pa_alsa_init_proplist_ctl(data
.proplist
, u
->control_device
);
1703 if (pa_modargs_get_proplist(ma
, "source_properties", data
.proplist
, PA_UPDATE_REPLACE
) < 0) {
1704 pa_log("Invalid properties");
1705 pa_source_new_data_done(&data
);
1709 if (u
->mixer_path_set
)
1710 pa_alsa_add_ports(&data
.ports
, u
->mixer_path_set
);
1712 u
->source
= pa_source_new(m
->core
, &data
, PA_SOURCE_HARDWARE
|PA_SOURCE_LATENCY
|(u
->use_tsched
? PA_SOURCE_DYNAMIC_LATENCY
: 0));
1713 pa_source_new_data_done(&data
);
1716 pa_log("Failed to create source object");
1720 u
->source
->parent
.process_msg
= source_process_msg
;
1722 u
->source
->update_requested_latency
= source_update_requested_latency_cb
;
1723 u
->source
->set_state
= source_set_state_cb
;
1724 u
->source
->set_port
= source_set_port_cb
;
1725 u
->source
->userdata
= u
;
1727 pa_source_set_asyncmsgq(u
->source
, u
->thread_mq
.inq
);
1728 pa_source_set_rtpoll(u
->source
, u
->rtpoll
);
1730 u
->frame_size
= frame_size
;
1731 u
->fragment_size
= frag_size
= (size_t) (period_frames
* frame_size
);
1732 u
->hwbuf_size
= buffer_size
= (size_t) (buffer_frames
* frame_size
);
1733 pa_cvolume_mute(&u
->hardware_volume
, u
->source
->sample_spec
.channels
);
1735 pa_log_info("Using %0.1f fragments of size %lu bytes (%0.2fms), buffer size is %lu bytes (%0.2fms)",
1736 (double) u
->hwbuf_size
/ (double) u
->fragment_size
,
1737 (long unsigned) u
->fragment_size
,
1738 (double) pa_bytes_to_usec(u
->fragment_size
, &ss
) / PA_USEC_PER_MSEC
,
1739 (long unsigned) u
->hwbuf_size
,
1740 (double) pa_bytes_to_usec(u
->hwbuf_size
, &ss
) / PA_USEC_PER_MSEC
);
1742 if (u
->use_tsched
) {
1743 u
->tsched_watermark
= pa_usec_to_bytes_round_up(pa_bytes_to_usec_round_up(tsched_watermark
, &requested_ss
), &u
->source
->sample_spec
);
1745 u
->watermark_inc_step
= pa_usec_to_bytes(TSCHED_WATERMARK_INC_STEP_USEC
, &u
->source
->sample_spec
);
1746 u
->watermark_dec_step
= pa_usec_to_bytes(TSCHED_WATERMARK_DEC_STEP_USEC
, &u
->source
->sample_spec
);
1748 u
->watermark_inc_threshold
= pa_usec_to_bytes_round_up(TSCHED_WATERMARK_INC_THRESHOLD_USEC
, &u
->source
->sample_spec
);
1749 u
->watermark_dec_threshold
= pa_usec_to_bytes_round_up(TSCHED_WATERMARK_DEC_THRESHOLD_USEC
, &u
->source
->sample_spec
);
1751 fix_min_sleep_wakeup(u
);
1752 fix_tsched_watermark(u
);
1754 pa_source_set_latency_range(u
->source
,
1756 pa_bytes_to_usec(u
->hwbuf_size
, &ss
));
1758 pa_log_info("Time scheduling watermark is %0.2fms",
1759 (double) pa_bytes_to_usec(u
->tsched_watermark
, &ss
) / PA_USEC_PER_MSEC
);
1761 pa_source_set_fixed_latency(u
->source
, pa_bytes_to_usec(u
->hwbuf_size
, &ss
));
1765 if (update_sw_params(u
) < 0)
1768 if (setup_mixer(u
, ignore_dB
) < 0)
1771 pa_alsa_dump(PA_LOG_DEBUG
, u
->pcm_handle
);
1773 if (!(u
->thread
= pa_thread_new("alsa-source", thread_func
, u
))) {
1774 pa_log("Failed to create thread.");
1777 /* Get initial mixer settings */
1778 if (data
.volume_is_set
) {
1779 if (u
->source
->set_volume
)
1780 u
->source
->set_volume(u
->source
);
1782 if (u
->source
->get_volume
)
1783 u
->source
->get_volume(u
->source
);
1786 if (data
.muted_is_set
) {
1787 if (u
->source
->set_mute
)
1788 u
->source
->set_mute(u
->source
);
1790 if (u
->source
->get_mute
)
1791 u
->source
->get_mute(u
->source
);
1794 pa_source_put(u
->source
);
1797 pa_alsa_profile_set_free(profile_set
);
1807 pa_alsa_profile_set_free(profile_set
);
1812 static void userdata_free(struct userdata
*u
) {
1816 pa_source_unlink(u
->source
);
1819 pa_asyncmsgq_send(u
->thread_mq
.inq
, NULL
, PA_MESSAGE_SHUTDOWN
, NULL
, 0, NULL
);
1820 pa_thread_free(u
->thread
);
1823 pa_thread_mq_done(&u
->thread_mq
);
1826 pa_source_unref(u
->source
);
1828 if (u
->alsa_rtpoll_item
)
1829 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
1832 pa_rtpoll_free(u
->rtpoll
);
1834 if (u
->pcm_handle
) {
1835 snd_pcm_drop(u
->pcm_handle
);
1836 snd_pcm_close(u
->pcm_handle
);
1840 pa_alsa_fdlist_free(u
->mixer_fdl
);
1842 if (u
->mixer_path_set
)
1843 pa_alsa_path_set_free(u
->mixer_path_set
);
1844 else if (u
->mixer_path
)
1845 pa_alsa_path_free(u
->mixer_path
);
1847 if (u
->mixer_handle
)
1848 snd_mixer_close(u
->mixer_handle
);
1851 pa_smoother_free(u
->smoother
);
1856 pa_xfree(u
->device_name
);
1857 pa_xfree(u
->control_device
);
1861 void pa_alsa_source_free(pa_source
*s
) {
1864 pa_source_assert_ref(s
);
1865 pa_assert_se(u
= s
->userdata
);