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;
119 pa_rtpoll_item
*alsa_rtpoll_item
;
121 snd_mixer_selem_channel_id_t mixer_map
[SND_MIXER_SCHN_LAST
];
123 pa_smoother
*smoother
;
125 pa_usec_t smoother_interval
;
126 pa_usec_t last_smoother_update
;
128 pa_reserve_wrapper
*reserve
;
129 pa_hook_slot
*reserve_slot
;
130 pa_reserve_monitor_wrapper
*monitor
;
131 pa_hook_slot
*monitor_slot
;
134 static void userdata_free(struct userdata
*u
);
136 static pa_hook_result_t
reserve_cb(pa_reserve_wrapper
*r
, void *forced
, struct userdata
*u
) {
140 if (pa_source_suspend(u
->source
, TRUE
, PA_SUSPEND_APPLICATION
) < 0)
141 return PA_HOOK_CANCEL
;
146 static void reserve_done(struct userdata
*u
) {
149 if (u
->reserve_slot
) {
150 pa_hook_slot_free(u
->reserve_slot
);
151 u
->reserve_slot
= NULL
;
155 pa_reserve_wrapper_unref(u
->reserve
);
160 static void reserve_update(struct userdata
*u
) {
161 const char *description
;
164 if (!u
->source
|| !u
->reserve
)
167 if ((description
= pa_proplist_gets(u
->source
->proplist
, PA_PROP_DEVICE_DESCRIPTION
)))
168 pa_reserve_wrapper_set_application_device_name(u
->reserve
, description
);
171 static int reserve_init(struct userdata
*u
, const char *dname
) {
180 if (pa_in_system_mode())
183 /* We are resuming, try to lock the device */
184 if (!(rname
= pa_alsa_get_reserve_name(dname
)))
187 u
->reserve
= pa_reserve_wrapper_get(u
->core
, rname
);
195 pa_assert(!u
->reserve_slot
);
196 u
->reserve_slot
= pa_hook_connect(pa_reserve_wrapper_hook(u
->reserve
), PA_HOOK_NORMAL
, (pa_hook_cb_t
) reserve_cb
, u
);
201 static pa_hook_result_t
monitor_cb(pa_reserve_monitor_wrapper
*w
, void* busy
, struct userdata
*u
) {
207 b
= PA_PTR_TO_UINT(busy
) && !u
->reserve
;
209 pa_source_suspend(u
->source
, b
, PA_SUSPEND_APPLICATION
);
213 static void monitor_done(struct userdata
*u
) {
216 if (u
->monitor_slot
) {
217 pa_hook_slot_free(u
->monitor_slot
);
218 u
->monitor_slot
= NULL
;
222 pa_reserve_monitor_wrapper_unref(u
->monitor
);
227 static int reserve_monitor_init(struct userdata
*u
, const char *dname
) {
233 if (pa_in_system_mode())
236 /* We are resuming, try to lock the device */
237 if (!(rname
= pa_alsa_get_reserve_name(dname
)))
240 u
->monitor
= pa_reserve_monitor_wrapper_get(u
->core
, rname
);
246 pa_assert(!u
->monitor_slot
);
247 u
->monitor_slot
= pa_hook_connect(pa_reserve_monitor_wrapper_hook(u
->monitor
), PA_HOOK_NORMAL
, (pa_hook_cb_t
) monitor_cb
, u
);
252 static void fix_min_sleep_wakeup(struct userdata
*u
) {
253 size_t max_use
, max_use_2
;
255 pa_assert(u
->use_tsched
);
257 max_use
= u
->hwbuf_size
- u
->hwbuf_unused
;
258 max_use_2
= pa_frame_align(max_use
/2, &u
->source
->sample_spec
);
260 u
->min_sleep
= pa_usec_to_bytes(TSCHED_MIN_SLEEP_USEC
, &u
->source
->sample_spec
);
261 u
->min_sleep
= PA_CLAMP(u
->min_sleep
, u
->frame_size
, max_use_2
);
263 u
->min_wakeup
= pa_usec_to_bytes(TSCHED_MIN_WAKEUP_USEC
, &u
->source
->sample_spec
);
264 u
->min_wakeup
= PA_CLAMP(u
->min_wakeup
, u
->frame_size
, max_use_2
);
267 static void fix_tsched_watermark(struct userdata
*u
) {
270 pa_assert(u
->use_tsched
);
272 max_use
= u
->hwbuf_size
- u
->hwbuf_unused
;
274 if (u
->tsched_watermark
> max_use
- u
->min_sleep
)
275 u
->tsched_watermark
= max_use
- u
->min_sleep
;
277 if (u
->tsched_watermark
< u
->min_wakeup
)
278 u
->tsched_watermark
= u
->min_wakeup
;
281 static void increase_watermark(struct userdata
*u
) {
282 size_t old_watermark
;
283 pa_usec_t old_min_latency
, new_min_latency
;
286 pa_assert(u
->use_tsched
);
288 /* First, just try to increase the watermark */
289 old_watermark
= u
->tsched_watermark
;
290 u
->tsched_watermark
= PA_MIN(u
->tsched_watermark
* 2, u
->tsched_watermark
+ u
->watermark_inc_step
);
291 fix_tsched_watermark(u
);
293 if (old_watermark
!= u
->tsched_watermark
) {
294 pa_log_info("Increasing wakeup watermark to %0.2f ms",
295 (double) pa_bytes_to_usec(u
->tsched_watermark
, &u
->source
->sample_spec
) / PA_USEC_PER_MSEC
);
299 /* Hmm, we cannot increase the watermark any further, hence let's raise the latency */
300 old_min_latency
= u
->source
->thread_info
.min_latency
;
301 new_min_latency
= PA_MIN(old_min_latency
* 2, old_min_latency
+ TSCHED_WATERMARK_INC_STEP_USEC
);
302 new_min_latency
= PA_MIN(new_min_latency
, u
->source
->thread_info
.max_latency
);
304 if (old_min_latency
!= new_min_latency
) {
305 pa_log_info("Increasing minimal latency to %0.2f ms",
306 (double) new_min_latency
/ PA_USEC_PER_MSEC
);
308 pa_source_set_latency_range_within_thread(u
->source
, new_min_latency
, u
->source
->thread_info
.max_latency
);
311 /* When we reach this we're officialy fucked! */
314 static void decrease_watermark(struct userdata
*u
) {
315 size_t old_watermark
;
319 pa_assert(u
->use_tsched
);
321 now
= pa_rtclock_now();
323 if (u
->watermark_dec_not_before
<= 0)
326 if (u
->watermark_dec_not_before
> now
)
329 old_watermark
= u
->tsched_watermark
;
331 if (u
->tsched_watermark
< u
->watermark_dec_step
)
332 u
->tsched_watermark
= u
->tsched_watermark
/ 2;
334 u
->tsched_watermark
= PA_MAX(u
->tsched_watermark
/ 2, u
->tsched_watermark
- u
->watermark_dec_step
);
336 fix_tsched_watermark(u
);
338 if (old_watermark
!= u
->tsched_watermark
)
339 pa_log_info("Decreasing wakeup watermark to %0.2f ms",
340 (double) pa_bytes_to_usec(u
->tsched_watermark
, &u
->source
->sample_spec
) / PA_USEC_PER_MSEC
);
342 /* We don't change the latency range*/
345 u
->watermark_dec_not_before
= now
+ TSCHED_WATERMARK_VERIFY_AFTER_USEC
;
348 static pa_usec_t
hw_sleep_time(struct userdata
*u
, pa_usec_t
*sleep_usec
, pa_usec_t
*process_usec
) {
351 pa_assert(sleep_usec
);
352 pa_assert(process_usec
);
355 pa_assert(u
->use_tsched
);
357 usec
= pa_source_get_requested_latency_within_thread(u
->source
);
359 if (usec
== (pa_usec_t
) -1)
360 usec
= pa_bytes_to_usec(u
->hwbuf_size
, &u
->source
->sample_spec
);
362 wm
= pa_bytes_to_usec(u
->tsched_watermark
, &u
->source
->sample_spec
);
367 *sleep_usec
= usec
- wm
;
371 pa_log_debug("Buffer time: %lu ms; Sleep time: %lu ms; Process time: %lu ms",
372 (unsigned long) (usec
/ PA_USEC_PER_MSEC
),
373 (unsigned long) (*sleep_usec
/ PA_USEC_PER_MSEC
),
374 (unsigned long) (*process_usec
/ PA_USEC_PER_MSEC
));
380 static int try_recover(struct userdata
*u
, const char *call
, int err
) {
385 pa_log_debug("%s: %s", call
, pa_alsa_strerror(err
));
387 pa_assert(err
!= -EAGAIN
);
390 pa_log_debug("%s: Buffer overrun!", call
);
392 if (err
== -ESTRPIPE
)
393 pa_log_debug("%s: System suspended!", call
);
395 if ((err
= snd_pcm_recover(u
->pcm_handle
, err
, 1)) < 0) {
396 pa_log("%s: %s", call
, pa_alsa_strerror(err
));
400 snd_pcm_start(u
->pcm_handle
);
404 static size_t check_left_to_record(struct userdata
*u
, size_t n_bytes
, pa_bool_t on_timeout
) {
405 size_t left_to_record
;
406 size_t rec_space
= u
->hwbuf_size
- u
->hwbuf_unused
;
407 pa_bool_t overrun
= FALSE
;
409 /* We use <= instead of < for this check here because an overrun
410 * only happens after the last sample was processed, not already when
411 * it is removed from the buffer. This is particularly important
412 * when block transfer is used. */
414 if (n_bytes
<= rec_space
)
415 left_to_record
= rec_space
- n_bytes
;
418 /* We got a dropout. What a mess! */
426 if (pa_log_ratelimit())
427 pa_log_info("Overrun!");
431 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
);
435 pa_bool_t reset_not_before
= TRUE
;
437 if (overrun
|| left_to_record
< u
->watermark_inc_threshold
)
438 increase_watermark(u
);
439 else if (left_to_record
> u
->watermark_dec_threshold
) {
440 reset_not_before
= FALSE
;
442 /* We decrease the watermark only if have actually been
443 * woken up by a timeout. If something else woke us up
444 * it's too easy to fulfill the deadlines... */
447 decrease_watermark(u
);
450 if (reset_not_before
)
451 u
->watermark_dec_not_before
= 0;
454 return left_to_record
;
457 static int mmap_read(struct userdata
*u
, pa_usec_t
*sleep_usec
, pa_bool_t polled
, pa_bool_t on_timeout
) {
458 pa_bool_t work_done
= FALSE
;
459 pa_usec_t max_sleep_usec
= 0, process_usec
= 0;
460 size_t left_to_record
;
464 pa_source_assert_ref(u
->source
);
467 hw_sleep_time(u
, &max_sleep_usec
, &process_usec
);
473 pa_bool_t after_avail
= TRUE
;
475 if (PA_UNLIKELY((n
= pa_alsa_safe_avail(u
->pcm_handle
, u
->hwbuf_size
, &u
->source
->sample_spec
)) < 0)) {
477 if ((r
= try_recover(u
, "snd_pcm_avail", (int) n
)) == 0)
483 n_bytes
= (size_t) n
* u
->frame_size
;
486 pa_log_debug("avail: %lu", (unsigned long) n_bytes
);
489 left_to_record
= check_left_to_record(u
, n_bytes
, on_timeout
);
494 pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
) > process_usec
+max_sleep_usec
/2) {
496 pa_log_debug("Not reading, because too early.");
501 if (PA_UNLIKELY(n_bytes
<= 0)) {
505 char *dn
= pa_alsa_get_driver_name_by_pcm(u
->pcm_handle
);
506 pa_log(_("ALSA woke us up to read new data from the device, but there was actually nothing to read!\n"
507 "Most likely this is a bug in the ALSA driver '%s'. Please report this issue to the ALSA developers.\n"
508 "We were woken up with POLLIN set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail."),
514 pa_log_debug("Not reading, because not necessary.");
521 pa_log_debug("Not filling up, because already too many iterations.");
530 pa_log_debug("Reading");
535 const snd_pcm_channel_area_t
*areas
;
536 snd_pcm_uframes_t offset
, frames
;
539 snd_pcm_sframes_t sframes
;
541 frames
= (snd_pcm_uframes_t
) (n_bytes
/ u
->frame_size
);
543 /* pa_log_debug("%lu frames to read", (unsigned long) frames); */
545 if (PA_UNLIKELY((err
= pa_alsa_safe_mmap_begin(u
->pcm_handle
, &areas
, &offset
, &frames
, u
->hwbuf_size
, &u
->source
->sample_spec
)) < 0)) {
547 if (!after_avail
&& err
== -EAGAIN
)
550 if ((r
= try_recover(u
, "snd_pcm_mmap_begin", err
)) == 0)
556 /* Make sure that if these memblocks need to be copied they will fit into one slot */
557 if (frames
> pa_mempool_block_size_max(u
->source
->core
->mempool
)/u
->frame_size
)
558 frames
= pa_mempool_block_size_max(u
->source
->core
->mempool
)/u
->frame_size
;
560 if (!after_avail
&& frames
== 0)
563 pa_assert(frames
> 0);
566 /* Check these are multiples of 8 bit */
567 pa_assert((areas
[0].first
& 7) == 0);
568 pa_assert((areas
[0].step
& 7)== 0);
570 /* We assume a single interleaved memory buffer */
571 pa_assert((areas
[0].first
>> 3) == 0);
572 pa_assert((areas
[0].step
>> 3) == u
->frame_size
);
574 p
= (uint8_t*) areas
[0].addr
+ (offset
* u
->frame_size
);
576 chunk
.memblock
= pa_memblock_new_fixed(u
->core
->mempool
, p
, frames
* u
->frame_size
, TRUE
);
577 chunk
.length
= pa_memblock_get_length(chunk
.memblock
);
580 pa_source_post(u
->source
, &chunk
);
581 pa_memblock_unref_fixed(chunk
.memblock
);
583 if (PA_UNLIKELY((sframes
= snd_pcm_mmap_commit(u
->pcm_handle
, offset
, frames
)) < 0)) {
585 if ((r
= try_recover(u
, "snd_pcm_mmap_commit", (int) sframes
)) == 0)
593 u
->read_count
+= frames
* u
->frame_size
;
596 pa_log_debug("Read %lu bytes (of possible %lu bytes)", (unsigned long) (frames
* u
->frame_size
), (unsigned long) n_bytes
);
599 if ((size_t) frames
* u
->frame_size
>= n_bytes
)
602 n_bytes
-= (size_t) frames
* u
->frame_size
;
607 *sleep_usec
= pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
);
609 if (*sleep_usec
> process_usec
)
610 *sleep_usec
-= process_usec
;
615 return work_done
? 1 : 0;
618 static int unix_read(struct userdata
*u
, pa_usec_t
*sleep_usec
, pa_bool_t polled
, pa_bool_t on_timeout
) {
619 int work_done
= FALSE
;
620 pa_usec_t max_sleep_usec
= 0, process_usec
= 0;
621 size_t left_to_record
;
625 pa_source_assert_ref(u
->source
);
628 hw_sleep_time(u
, &max_sleep_usec
, &process_usec
);
634 pa_bool_t after_avail
= TRUE
;
636 if (PA_UNLIKELY((n
= pa_alsa_safe_avail(u
->pcm_handle
, u
->hwbuf_size
, &u
->source
->sample_spec
)) < 0)) {
638 if ((r
= try_recover(u
, "snd_pcm_avail", (int) n
)) == 0)
644 n_bytes
= (size_t) n
* u
->frame_size
;
645 left_to_record
= check_left_to_record(u
, n_bytes
, on_timeout
);
650 pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
) > process_usec
+max_sleep_usec
/2)
653 if (PA_UNLIKELY(n_bytes
<= 0)) {
657 char *dn
= pa_alsa_get_driver_name_by_pcm(u
->pcm_handle
);
658 pa_log(_("ALSA woke us up to read new data from the device, but there was actually nothing to read!\n"
659 "Most likely this is a bug in the ALSA driver '%s'. Please report this issue to the ALSA developers.\n"
660 "We were woken up with POLLIN set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail."),
670 pa_log_debug("Not filling up, because already too many iterations.");
680 snd_pcm_sframes_t frames
;
683 chunk
.memblock
= pa_memblock_new(u
->core
->mempool
, (size_t) -1);
685 frames
= (snd_pcm_sframes_t
) (pa_memblock_get_length(chunk
.memblock
) / u
->frame_size
);
687 if (frames
> (snd_pcm_sframes_t
) (n_bytes
/u
->frame_size
))
688 frames
= (snd_pcm_sframes_t
) (n_bytes
/u
->frame_size
);
690 /* pa_log_debug("%lu frames to read", (unsigned long) n); */
692 p
= pa_memblock_acquire(chunk
.memblock
);
693 frames
= snd_pcm_readi(u
->pcm_handle
, (uint8_t*) p
, (snd_pcm_uframes_t
) frames
);
694 pa_memblock_release(chunk
.memblock
);
696 if (PA_UNLIKELY(frames
< 0)) {
697 pa_memblock_unref(chunk
.memblock
);
699 if (!after_avail
&& (int) frames
== -EAGAIN
)
702 if ((r
= try_recover(u
, "snd_pcm_readi", (int) frames
)) == 0)
708 if (!after_avail
&& frames
== 0) {
709 pa_memblock_unref(chunk
.memblock
);
713 pa_assert(frames
> 0);
717 chunk
.length
= (size_t) frames
* u
->frame_size
;
719 pa_source_post(u
->source
, &chunk
);
720 pa_memblock_unref(chunk
.memblock
);
724 u
->read_count
+= frames
* u
->frame_size
;
726 /* pa_log_debug("read %lu frames", (unsigned long) frames); */
728 if ((size_t) frames
* u
->frame_size
>= n_bytes
)
731 n_bytes
-= (size_t) frames
* u
->frame_size
;
736 *sleep_usec
= pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
);
738 if (*sleep_usec
> process_usec
)
739 *sleep_usec
-= process_usec
;
744 return work_done
? 1 : 0;
747 static void update_smoother(struct userdata
*u
) {
748 snd_pcm_sframes_t delay
= 0;
751 pa_usec_t now1
= 0, now2
;
752 snd_pcm_status_t
*status
;
754 snd_pcm_status_alloca(&status
);
757 pa_assert(u
->pcm_handle
);
759 /* Let's update the time smoother */
761 if (PA_UNLIKELY((err
= pa_alsa_safe_delay(u
->pcm_handle
, &delay
, u
->hwbuf_size
, &u
->source
->sample_spec
)) < 0)) {
762 pa_log_warn("Failed to get delay: %s", pa_alsa_strerror(err
));
766 if (PA_UNLIKELY((err
= snd_pcm_status(u
->pcm_handle
, status
)) < 0))
767 pa_log_warn("Failed to get timestamp: %s", pa_alsa_strerror(err
));
769 snd_htimestamp_t htstamp
= { 0, 0 };
770 snd_pcm_status_get_htstamp(status
, &htstamp
);
771 now1
= pa_timespec_load(&htstamp
);
774 /* Hmm, if the timestamp is 0, then it wasn't set and we take the current time */
776 now1
= pa_rtclock_now();
778 /* check if the time since the last update is bigger than the interval */
779 if (u
->last_smoother_update
> 0)
780 if (u
->last_smoother_update
+ u
->smoother_interval
> now1
)
783 position
= u
->read_count
+ ((uint64_t) delay
* (uint64_t) u
->frame_size
);
784 now2
= pa_bytes_to_usec(position
, &u
->source
->sample_spec
);
786 pa_smoother_put(u
->smoother
, now1
, now2
);
788 u
->last_smoother_update
= now1
;
789 /* exponentially increase the update interval up to the MAX limit */
790 u
->smoother_interval
= PA_MIN (u
->smoother_interval
* 2, SMOOTHER_MAX_INTERVAL
);
793 static pa_usec_t
source_get_latency(struct userdata
*u
) {
795 pa_usec_t now1
, now2
;
799 now1
= pa_rtclock_now();
800 now2
= pa_smoother_get(u
->smoother
, now1
);
802 delay
= (int64_t) now2
- (int64_t) pa_bytes_to_usec(u
->read_count
, &u
->source
->sample_spec
);
804 return delay
>= 0 ? (pa_usec_t
) delay
: 0;
807 static int build_pollfd(struct userdata
*u
) {
809 pa_assert(u
->pcm_handle
);
811 if (u
->alsa_rtpoll_item
)
812 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
814 if (!(u
->alsa_rtpoll_item
= pa_alsa_build_pollfd(u
->pcm_handle
, u
->rtpoll
)))
820 static int suspend(struct userdata
*u
) {
822 pa_assert(u
->pcm_handle
);
824 pa_smoother_pause(u
->smoother
, pa_rtclock_now());
827 snd_pcm_close(u
->pcm_handle
);
828 u
->pcm_handle
= NULL
;
830 if (u
->alsa_rtpoll_item
) {
831 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
832 u
->alsa_rtpoll_item
= NULL
;
835 pa_log_info("Device suspended...");
840 static int update_sw_params(struct userdata
*u
) {
841 snd_pcm_uframes_t avail_min
;
846 /* Use the full buffer if noone asked us for anything specific */
852 if ((latency
= pa_source_get_requested_latency_within_thread(u
->source
)) != (pa_usec_t
) -1) {
855 pa_log_debug("latency set to %0.2fms", (double) latency
/ PA_USEC_PER_MSEC
);
857 b
= pa_usec_to_bytes(latency
, &u
->source
->sample_spec
);
859 /* We need at least one sample in our buffer */
861 if (PA_UNLIKELY(b
< u
->frame_size
))
864 u
->hwbuf_unused
= PA_LIKELY(b
< u
->hwbuf_size
) ? (u
->hwbuf_size
- b
) : 0;
867 fix_min_sleep_wakeup(u
);
868 fix_tsched_watermark(u
);
871 pa_log_debug("hwbuf_unused=%lu", (unsigned long) u
->hwbuf_unused
);
876 pa_usec_t sleep_usec
, process_usec
;
878 hw_sleep_time(u
, &sleep_usec
, &process_usec
);
879 avail_min
+= pa_usec_to_bytes(sleep_usec
, &u
->source
->sample_spec
) / u
->frame_size
;
882 pa_log_debug("setting avail_min=%lu", (unsigned long) avail_min
);
884 if ((err
= pa_alsa_set_sw_params(u
->pcm_handle
, avail_min
, !u
->use_tsched
)) < 0) {
885 pa_log("Failed to set software parameters: %s", pa_alsa_strerror(err
));
892 static int unsuspend(struct userdata
*u
) {
896 snd_pcm_uframes_t period_size
, buffer_size
;
899 pa_assert(!u
->pcm_handle
);
901 pa_log_info("Trying resume...");
903 if ((err
= snd_pcm_open(&u
->pcm_handle
, u
->device_name
, SND_PCM_STREAM_CAPTURE
,
905 SND_PCM_NO_AUTO_RESAMPLE
|
906 SND_PCM_NO_AUTO_CHANNELS
|
907 SND_PCM_NO_AUTO_FORMAT
)) < 0) {
908 pa_log("Error opening PCM device %s: %s", u
->device_name
, pa_alsa_strerror(err
));
912 ss
= u
->source
->sample_spec
;
913 period_size
= u
->fragment_size
/ u
->frame_size
;
914 buffer_size
= u
->hwbuf_size
/ u
->frame_size
;
918 if ((err
= pa_alsa_set_hw_params(u
->pcm_handle
, &ss
, &period_size
, &buffer_size
, 0, &b
, &d
, TRUE
)) < 0) {
919 pa_log("Failed to set hardware parameters: %s", pa_alsa_strerror(err
));
923 if (b
!= u
->use_mmap
|| d
!= u
->use_tsched
) {
924 pa_log_warn("Resume failed, couldn't get original access mode.");
928 if (!pa_sample_spec_equal(&ss
, &u
->source
->sample_spec
)) {
929 pa_log_warn("Resume failed, couldn't restore original sample settings.");
933 if (period_size
*u
->frame_size
!= u
->fragment_size
||
934 buffer_size
*u
->frame_size
!= u
->hwbuf_size
) {
935 pa_log_warn("Resume failed, couldn't restore original fragment settings. (Old: %lu/%lu, New %lu/%lu)",
936 (unsigned long) u
->hwbuf_size
, (unsigned long) u
->fragment_size
,
937 (unsigned long) (buffer_size
*u
->frame_size
), (unsigned long) (period_size
*u
->frame_size
));
941 if (update_sw_params(u
) < 0)
944 if (build_pollfd(u
) < 0)
947 /* FIXME: We need to reload the volume somehow */
949 snd_pcm_start(u
->pcm_handle
);
952 pa_smoother_reset(u
->smoother
, pa_rtclock_now(), FALSE
);
953 u
->smoother_interval
= SMOOTHER_MIN_INTERVAL
;
954 u
->last_smoother_update
= 0;
956 pa_log_info("Resumed successfully...");
962 snd_pcm_close(u
->pcm_handle
);
963 u
->pcm_handle
= NULL
;
969 static int source_process_msg(pa_msgobject
*o
, int code
, void *data
, int64_t offset
, pa_memchunk
*chunk
) {
970 struct userdata
*u
= PA_SOURCE(o
)->userdata
;
974 case PA_SOURCE_MESSAGE_GET_LATENCY
: {
978 r
= source_get_latency(u
);
980 *((pa_usec_t
*) data
) = r
;
985 case PA_SOURCE_MESSAGE_SET_STATE
:
987 switch ((pa_source_state_t
) PA_PTR_TO_UINT(data
)) {
989 case PA_SOURCE_SUSPENDED
: {
991 pa_assert(PA_SOURCE_IS_OPENED(u
->source
->thread_info
.state
));
993 if ((r
= suspend(u
)) < 0)
1000 case PA_SOURCE_RUNNING
: {
1003 if (u
->source
->thread_info
.state
== PA_SOURCE_INIT
) {
1004 if (build_pollfd(u
) < 0)
1007 snd_pcm_start(u
->pcm_handle
);
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 work_done
= mmap_read(u
, &sleep_usec
, revents
& POLLIN
, on_timeout
);
1246 work_done
= unix_read(u
, &sleep_usec
, revents
& POLLIN
, on_timeout
);
1251 /* pa_log_debug("work_done = %i", work_done); */
1256 if (u
->use_tsched
) {
1259 /* OK, the capture buffer is now empty, let's
1260 * calculate when to wake up next */
1262 /* pa_log_debug("Waking up in %0.2fms (sound card clock).", (double) sleep_usec / PA_USEC_PER_MSEC); */
1264 /* Convert from the sound card time domain to the
1265 * system time domain */
1266 cusec
= pa_smoother_translate(u
->smoother
, pa_rtclock_now(), sleep_usec
);
1268 /* pa_log_debug("Waking up in %0.2fms (system clock).", (double) cusec / PA_USEC_PER_MSEC); */
1270 /* We don't trust the conversion, so we wake up whatever comes first */
1271 pa_rtpoll_set_timer_relative(u
->rtpoll
, PA_MIN(sleep_usec
, cusec
));
1273 } else if (u
->use_tsched
)
1275 /* OK, we're in an invalid state, let's disable our timers */
1276 pa_rtpoll_set_timer_disabled(u
->rtpoll
);
1278 /* Hmm, nothing to do. Let's sleep */
1279 if ((ret
= pa_rtpoll_run(u
->rtpoll
, TRUE
)) < 0)
1285 /* Tell ALSA about this and process its response */
1286 if (PA_SOURCE_IS_OPENED(u
->source
->thread_info
.state
)) {
1287 struct pollfd
*pollfd
;
1291 pollfd
= pa_rtpoll_item_get_pollfd(u
->alsa_rtpoll_item
, &n
);
1293 if ((err
= snd_pcm_poll_descriptors_revents(u
->pcm_handle
, pollfd
, n
, &revents
)) < 0) {
1294 pa_log("snd_pcm_poll_descriptors_revents() failed: %s", pa_alsa_strerror(err
));
1298 if (revents
& ~POLLIN
) {
1299 if (pa_alsa_recover_from_poll(u
->pcm_handle
, revents
) < 0)
1302 snd_pcm_start(u
->pcm_handle
);
1303 } else if (revents
&& u
->use_tsched
&& pa_log_ratelimit())
1304 pa_log_debug("Wakeup from ALSA!");
1311 /* If this was no regular exit from the loop we have to continue
1312 * processing messages until we received PA_MESSAGE_SHUTDOWN */
1313 pa_asyncmsgq_post(u
->thread_mq
.outq
, PA_MSGOBJECT(u
->core
), PA_CORE_MESSAGE_UNLOAD_MODULE
, u
->module
, 0, NULL
, NULL
);
1314 pa_asyncmsgq_wait_for(u
->thread_mq
.inq
, PA_MESSAGE_SHUTDOWN
);
1317 pa_log_debug("Thread shutting down");
1320 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
) {
1326 pa_assert(device_name
);
1328 if ((n
= pa_modargs_get_value(ma
, "source_name", NULL
))) {
1329 pa_source_new_data_set_name(data
, n
);
1330 data
->namereg_fail
= TRUE
;
1334 if ((n
= pa_modargs_get_value(ma
, "name", NULL
)))
1335 data
->namereg_fail
= TRUE
;
1337 n
= device_id
? device_id
: device_name
;
1338 data
->namereg_fail
= FALSE
;
1342 t
= pa_sprintf_malloc("alsa_input.%s.%s", n
, mapping
->name
);
1344 t
= pa_sprintf_malloc("alsa_input.%s", n
);
1346 pa_source_new_data_set_name(data
, t
);
1350 static void find_mixer(struct userdata
*u
, pa_alsa_mapping
*mapping
, const char *element
, pa_bool_t ignore_dB
) {
1352 if (!mapping
&& !element
)
1355 if (!(u
->mixer_handle
= pa_alsa_open_mixer_for_pcm(u
->pcm_handle
, &u
->control_device
))) {
1356 pa_log_info("Failed to find a working mixer device.");
1362 if (!(u
->mixer_path
= pa_alsa_path_synthesize(element
, PA_ALSA_DIRECTION_INPUT
)))
1365 if (pa_alsa_path_probe(u
->mixer_path
, u
->mixer_handle
, ignore_dB
) < 0)
1368 pa_log_debug("Probed mixer path %s:", u
->mixer_path
->name
);
1369 pa_alsa_path_dump(u
->mixer_path
);
1372 if (!(u
->mixer_path_set
= pa_alsa_path_set_new(mapping
, PA_ALSA_DIRECTION_INPUT
)))
1375 pa_alsa_path_set_probe(u
->mixer_path_set
, u
->mixer_handle
, ignore_dB
);
1377 pa_log_debug("Probed mixer paths:");
1378 pa_alsa_path_set_dump(u
->mixer_path_set
);
1385 if (u
->mixer_path_set
) {
1386 pa_alsa_path_set_free(u
->mixer_path_set
);
1387 u
->mixer_path_set
= NULL
;
1388 } else if (u
->mixer_path
) {
1389 pa_alsa_path_free(u
->mixer_path
);
1390 u
->mixer_path
= NULL
;
1393 if (u
->mixer_handle
) {
1394 snd_mixer_close(u
->mixer_handle
);
1395 u
->mixer_handle
= NULL
;
1399 static int setup_mixer(struct userdata
*u
, pa_bool_t ignore_dB
) {
1402 if (!u
->mixer_handle
)
1405 if (u
->source
->active_port
) {
1406 pa_alsa_port_data
*data
;
1408 /* We have a list of supported paths, so let's activate the
1409 * one that has been chosen as active */
1411 data
= PA_DEVICE_PORT_DATA(u
->source
->active_port
);
1412 u
->mixer_path
= data
->path
;
1414 pa_alsa_path_select(data
->path
, u
->mixer_handle
);
1417 pa_alsa_setting_select(data
->setting
, u
->mixer_handle
);
1421 if (!u
->mixer_path
&& u
->mixer_path_set
)
1422 u
->mixer_path
= u
->mixer_path_set
->paths
;
1424 if (u
->mixer_path
) {
1425 /* Hmm, we have only a single path, then let's activate it */
1427 pa_alsa_path_select(u
->mixer_path
, u
->mixer_handle
);
1429 if (u
->mixer_path
->settings
)
1430 pa_alsa_setting_select(u
->mixer_path
->settings
, u
->mixer_handle
);
1435 if (!u
->mixer_path
->has_volume
)
1436 pa_log_info("Driver does not support hardware volume control, falling back to software volume control.");
1439 if (u
->mixer_path
->has_dB
) {
1440 pa_log_info("Hardware volume ranges from %0.2f dB to %0.2f dB.", u
->mixer_path
->min_dB
, u
->mixer_path
->max_dB
);
1442 u
->source
->base_volume
= pa_sw_volume_from_dB(-u
->mixer_path
->max_dB
);
1443 u
->source
->n_volume_steps
= PA_VOLUME_NORM
+1;
1445 if (u
->mixer_path
->max_dB
> 0.0)
1446 pa_log_info("Fixing base volume to %0.2f dB", pa_sw_volume_to_dB(u
->source
->base_volume
));
1448 pa_log_info("No particular base volume set, fixing to 0 dB");
1451 pa_log_info("Hardware volume ranges from %li to %li.", u
->mixer_path
->min_volume
, u
->mixer_path
->max_volume
);
1452 u
->source
->base_volume
= PA_VOLUME_NORM
;
1453 u
->source
->n_volume_steps
= u
->mixer_path
->max_volume
- u
->mixer_path
->min_volume
+ 1;
1456 u
->source
->get_volume
= source_get_volume_cb
;
1457 u
->source
->set_volume
= source_set_volume_cb
;
1459 u
->source
->flags
|= PA_SOURCE_HW_VOLUME_CTRL
| (u
->mixer_path
->has_dB
? PA_SOURCE_DECIBEL_VOLUME
: 0);
1460 pa_log_info("Using hardware volume control. Hardware dB scale %s.", u
->mixer_path
->has_dB
? "supported" : "not supported");
1463 if (!u
->mixer_path
->has_mute
) {
1464 pa_log_info("Driver does not support hardware mute control, falling back to software mute control.");
1466 u
->source
->get_mute
= source_get_mute_cb
;
1467 u
->source
->set_mute
= source_set_mute_cb
;
1468 u
->source
->flags
|= PA_SOURCE_HW_MUTE_CTRL
;
1469 pa_log_info("Using hardware mute control.");
1472 u
->mixer_fdl
= pa_alsa_fdlist_new();
1474 if (pa_alsa_fdlist_set_mixer(u
->mixer_fdl
, u
->mixer_handle
, u
->core
->mainloop
) < 0) {
1475 pa_log("Failed to initialize file descriptor monitoring");
1479 if (u
->mixer_path_set
)
1480 pa_alsa_path_set_set_callback(u
->mixer_path_set
, u
->mixer_handle
, mixer_callback
, u
);
1482 pa_alsa_path_set_callback(u
->mixer_path
, u
->mixer_handle
, mixer_callback
, u
);
1487 pa_source
*pa_alsa_source_new(pa_module
*m
, pa_modargs
*ma
, const char*driver
, pa_card
*card
, pa_alsa_mapping
*mapping
) {
1489 struct userdata
*u
= NULL
;
1490 const char *dev_id
= NULL
;
1491 pa_sample_spec ss
, requested_ss
;
1493 uint32_t nfrags
, frag_size
, buffer_size
, tsched_size
, tsched_watermark
;
1494 snd_pcm_uframes_t period_frames
, buffer_frames
, tsched_frames
;
1496 pa_bool_t use_mmap
= TRUE
, b
, use_tsched
= TRUE
, d
, ignore_dB
= FALSE
, namereg_fail
= FALSE
;
1497 pa_source_new_data data
;
1498 pa_alsa_profile_set
*profile_set
= NULL
;
1503 ss
= m
->core
->default_sample_spec
;
1504 map
= m
->core
->default_channel_map
;
1505 if (pa_modargs_get_sample_spec_and_channel_map(ma
, &ss
, &map
, PA_CHANNEL_MAP_ALSA
) < 0) {
1506 pa_log("Failed to parse sample specification");
1511 frame_size
= pa_frame_size(&ss
);
1513 nfrags
= m
->core
->default_n_fragments
;
1514 frag_size
= (uint32_t) pa_usec_to_bytes(m
->core
->default_fragment_size_msec
*PA_USEC_PER_MSEC
, &ss
);
1516 frag_size
= (uint32_t) frame_size
;
1517 tsched_size
= (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_BUFFER_USEC
, &ss
);
1518 tsched_watermark
= (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_WATERMARK_USEC
, &ss
);
1520 if (pa_modargs_get_value_u32(ma
, "fragments", &nfrags
) < 0 ||
1521 pa_modargs_get_value_u32(ma
, "fragment_size", &frag_size
) < 0 ||
1522 pa_modargs_get_value_u32(ma
, "tsched_buffer_size", &tsched_size
) < 0 ||
1523 pa_modargs_get_value_u32(ma
, "tsched_buffer_watermark", &tsched_watermark
) < 0) {
1524 pa_log("Failed to parse buffer metrics");
1528 buffer_size
= nfrags
* frag_size
;
1530 period_frames
= frag_size
/frame_size
;
1531 buffer_frames
= buffer_size
/frame_size
;
1532 tsched_frames
= tsched_size
/frame_size
;
1534 if (pa_modargs_get_value_boolean(ma
, "mmap", &use_mmap
) < 0) {
1535 pa_log("Failed to parse mmap argument.");
1539 if (pa_modargs_get_value_boolean(ma
, "tsched", &use_tsched
) < 0) {
1540 pa_log("Failed to parse timer_scheduling argument.");
1544 if (pa_modargs_get_value_boolean(ma
, "ignore_dB", &ignore_dB
) < 0) {
1545 pa_log("Failed to parse ignore_dB argument.");
1549 use_tsched
= pa_alsa_may_tsched(use_tsched
);
1551 u
= pa_xnew0(struct userdata
, 1);
1554 u
->use_mmap
= use_mmap
;
1555 u
->use_tsched
= use_tsched
;
1556 u
->rtpoll
= pa_rtpoll_new();
1557 pa_thread_mq_init(&u
->thread_mq
, m
->core
->mainloop
, u
->rtpoll
);
1559 u
->smoother
= pa_smoother_new(
1560 DEFAULT_TSCHED_BUFFER_USEC
*2,
1561 DEFAULT_TSCHED_BUFFER_USEC
*2,
1567 u
->smoother_interval
= SMOOTHER_MIN_INTERVAL
;
1569 dev_id
= pa_modargs_get_value(
1571 pa_modargs_get_value(ma
, "device", DEFAULT_DEVICE
));
1573 if (reserve_init(u
, dev_id
) < 0)
1576 if (reserve_monitor_init(u
, dev_id
) < 0)
1584 if (!(dev_id
= pa_modargs_get_value(ma
, "device_id", NULL
))) {
1585 pa_log("device_id= not set");
1589 if (!(u
->pcm_handle
= pa_alsa_open_by_device_id_mapping(
1593 SND_PCM_STREAM_CAPTURE
,
1594 &period_frames
, &buffer_frames
, tsched_frames
,
1598 } else if ((dev_id
= pa_modargs_get_value(ma
, "device_id", NULL
))) {
1600 if (!(profile_set
= pa_alsa_profile_set_new(NULL
, &map
)))
1603 if (!(u
->pcm_handle
= pa_alsa_open_by_device_id_auto(
1607 SND_PCM_STREAM_CAPTURE
,
1608 &period_frames
, &buffer_frames
, tsched_frames
,
1609 &b
, &d
, profile_set
, &mapping
)))
1614 if (!(u
->pcm_handle
= pa_alsa_open_by_device_string(
1615 pa_modargs_get_value(ma
, "device", DEFAULT_DEVICE
),
1618 SND_PCM_STREAM_CAPTURE
,
1619 &period_frames
, &buffer_frames
, tsched_frames
,
1624 pa_assert(u
->device_name
);
1625 pa_log_info("Successfully opened device %s.", u
->device_name
);
1627 if (pa_alsa_pcm_is_modem(u
->pcm_handle
)) {
1628 pa_log_notice("Device %s is modem, refusing further initialization.", u
->device_name
);
1633 pa_log_info("Selected mapping '%s' (%s).", mapping
->description
, mapping
->name
);
1635 if (use_mmap
&& !b
) {
1636 pa_log_info("Device doesn't support mmap(), falling back to UNIX read/write mode.");
1637 u
->use_mmap
= use_mmap
= FALSE
;
1640 if (use_tsched
&& (!b
|| !d
)) {
1641 pa_log_info("Cannot enable timer-based scheduling, falling back to sound IRQ scheduling.");
1642 u
->use_tsched
= use_tsched
= FALSE
;
1646 pa_log_info("Successfully enabled mmap() mode.");
1649 pa_log_info("Successfully enabled timer-based scheduling mode.");
1651 /* ALSA might tweak the sample spec, so recalculate the frame size */
1652 frame_size
= pa_frame_size(&ss
);
1654 find_mixer(u
, mapping
, pa_modargs_get_value(ma
, "control", NULL
), ignore_dB
);
1656 pa_source_new_data_init(&data
);
1657 data
.driver
= driver
;
1660 set_source_name(&data
, ma
, dev_id
, u
->device_name
, mapping
);
1662 /* We need to give pa_modargs_get_value_boolean() a pointer to a local
1663 * variable instead of using &data.namereg_fail directly, because
1664 * data.namereg_fail is a bitfield and taking the address of a bitfield
1665 * variable is impossible. */
1666 namereg_fail
= data
.namereg_fail
;
1667 if (pa_modargs_get_value_boolean(ma
, "namereg_fail", &namereg_fail
) < 0) {
1668 pa_log("Failed to parse boolean argument namereg_fail.");
1669 pa_source_new_data_done(&data
);
1672 data
.namereg_fail
= namereg_fail
;
1674 pa_source_new_data_set_sample_spec(&data
, &ss
);
1675 pa_source_new_data_set_channel_map(&data
, &map
);
1677 pa_alsa_init_proplist_pcm(m
->core
, data
.proplist
, u
->pcm_handle
);
1678 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_STRING
, u
->device_name
);
1679 pa_proplist_setf(data
.proplist
, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE
, "%lu", (unsigned long) (buffer_frames
* frame_size
));
1680 pa_proplist_setf(data
.proplist
, PA_PROP_DEVICE_BUFFERING_FRAGMENT_SIZE
, "%lu", (unsigned long) (period_frames
* frame_size
));
1681 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_ACCESS_MODE
, u
->use_tsched
? "mmap+timer" : (u
->use_mmap
? "mmap" : "serial"));
1684 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_PROFILE_NAME
, mapping
->name
);
1685 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_PROFILE_DESCRIPTION
, mapping
->description
);
1688 pa_alsa_init_description(data
.proplist
);
1690 if (u
->control_device
)
1691 pa_alsa_init_proplist_ctl(data
.proplist
, u
->control_device
);
1693 if (pa_modargs_get_proplist(ma
, "source_properties", data
.proplist
, PA_UPDATE_REPLACE
) < 0) {
1694 pa_log("Invalid properties");
1695 pa_source_new_data_done(&data
);
1699 if (u
->mixer_path_set
)
1700 pa_alsa_add_ports(&data
.ports
, u
->mixer_path_set
);
1702 u
->source
= pa_source_new(m
->core
, &data
, PA_SOURCE_HARDWARE
|PA_SOURCE_LATENCY
|(u
->use_tsched
? PA_SOURCE_DYNAMIC_LATENCY
: 0));
1703 pa_source_new_data_done(&data
);
1706 pa_log("Failed to create source object");
1710 u
->source
->parent
.process_msg
= source_process_msg
;
1712 u
->source
->update_requested_latency
= source_update_requested_latency_cb
;
1713 u
->source
->set_state
= source_set_state_cb
;
1714 u
->source
->set_port
= source_set_port_cb
;
1715 u
->source
->userdata
= u
;
1717 pa_source_set_asyncmsgq(u
->source
, u
->thread_mq
.inq
);
1718 pa_source_set_rtpoll(u
->source
, u
->rtpoll
);
1720 u
->frame_size
= frame_size
;
1721 u
->fragment_size
= frag_size
= (size_t) (period_frames
* frame_size
);
1722 u
->hwbuf_size
= buffer_size
= (size_t) (buffer_frames
* frame_size
);
1723 pa_cvolume_mute(&u
->hardware_volume
, u
->source
->sample_spec
.channels
);
1725 pa_log_info("Using %0.1f fragments of size %lu bytes (%0.2fms), buffer size is %lu bytes (%0.2fms)",
1726 (double) u
->hwbuf_size
/ (double) u
->fragment_size
,
1727 (long unsigned) u
->fragment_size
,
1728 (double) pa_bytes_to_usec(u
->fragment_size
, &ss
) / PA_USEC_PER_MSEC
,
1729 (long unsigned) u
->hwbuf_size
,
1730 (double) pa_bytes_to_usec(u
->hwbuf_size
, &ss
) / PA_USEC_PER_MSEC
);
1732 if (u
->use_tsched
) {
1733 u
->tsched_watermark
= pa_usec_to_bytes_round_up(pa_bytes_to_usec_round_up(tsched_watermark
, &requested_ss
), &u
->source
->sample_spec
);
1735 u
->watermark_inc_step
= pa_usec_to_bytes(TSCHED_WATERMARK_INC_STEP_USEC
, &u
->source
->sample_spec
);
1736 u
->watermark_dec_step
= pa_usec_to_bytes(TSCHED_WATERMARK_DEC_STEP_USEC
, &u
->source
->sample_spec
);
1738 u
->watermark_inc_threshold
= pa_usec_to_bytes_round_up(TSCHED_WATERMARK_INC_THRESHOLD_USEC
, &u
->source
->sample_spec
);
1739 u
->watermark_dec_threshold
= pa_usec_to_bytes_round_up(TSCHED_WATERMARK_DEC_THRESHOLD_USEC
, &u
->source
->sample_spec
);
1741 fix_min_sleep_wakeup(u
);
1742 fix_tsched_watermark(u
);
1744 pa_source_set_latency_range(u
->source
,
1746 pa_bytes_to_usec(u
->hwbuf_size
, &ss
));
1748 pa_log_info("Time scheduling watermark is %0.2fms",
1749 (double) pa_bytes_to_usec(u
->tsched_watermark
, &ss
) / PA_USEC_PER_MSEC
);
1751 pa_source_set_fixed_latency(u
->source
, pa_bytes_to_usec(u
->hwbuf_size
, &ss
));
1755 if (update_sw_params(u
) < 0)
1758 if (setup_mixer(u
, ignore_dB
) < 0)
1761 pa_alsa_dump(PA_LOG_DEBUG
, u
->pcm_handle
);
1763 if (!(u
->thread
= pa_thread_new("alsa-source", thread_func
, u
))) {
1764 pa_log("Failed to create thread.");
1767 /* Get initial mixer settings */
1768 if (data
.volume_is_set
) {
1769 if (u
->source
->set_volume
)
1770 u
->source
->set_volume(u
->source
);
1772 if (u
->source
->get_volume
)
1773 u
->source
->get_volume(u
->source
);
1776 if (data
.muted_is_set
) {
1777 if (u
->source
->set_mute
)
1778 u
->source
->set_mute(u
->source
);
1780 if (u
->source
->get_mute
)
1781 u
->source
->get_mute(u
->source
);
1784 pa_source_put(u
->source
);
1787 pa_alsa_profile_set_free(profile_set
);
1797 pa_alsa_profile_set_free(profile_set
);
1802 static void userdata_free(struct userdata
*u
) {
1806 pa_source_unlink(u
->source
);
1809 pa_asyncmsgq_send(u
->thread_mq
.inq
, NULL
, PA_MESSAGE_SHUTDOWN
, NULL
, 0, NULL
);
1810 pa_thread_free(u
->thread
);
1813 pa_thread_mq_done(&u
->thread_mq
);
1816 pa_source_unref(u
->source
);
1818 if (u
->alsa_rtpoll_item
)
1819 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
1822 pa_rtpoll_free(u
->rtpoll
);
1824 if (u
->pcm_handle
) {
1825 snd_pcm_drop(u
->pcm_handle
);
1826 snd_pcm_close(u
->pcm_handle
);
1830 pa_alsa_fdlist_free(u
->mixer_fdl
);
1832 if (u
->mixer_path_set
)
1833 pa_alsa_path_set_free(u
->mixer_path_set
);
1834 else if (u
->mixer_path
)
1835 pa_alsa_path_free(u
->mixer_path
);
1837 if (u
->mixer_handle
)
1838 snd_mixer_close(u
->mixer_handle
);
1841 pa_smoother_free(u
->smoother
);
1846 pa_xfree(u
->device_name
);
1847 pa_xfree(u
->control_device
);
1851 void pa_alsa_source_free(pa_source
*s
) {
1854 pa_source_assert_ref(s
);
1855 pa_assert_se(u
= s
->userdata
);