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 (1*PA_USEC_PER_MSEC) /* 3ms */
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
;
117 char *control_device
;
119 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
));
402 snd_pcm_start(u
->pcm_handle
);
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
;
410 /* We use <= instead of < for this check here because an overrun
411 * only happens after the last sample was processed, not already when
412 * it is removed from the buffer. This is particularly important
413 * when block transfer is used. */
415 if (n_bytes
<= rec_space
)
416 left_to_record
= rec_space
- n_bytes
;
419 /* 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 (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
;
606 *sleep_usec
= pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
);
608 if (*sleep_usec
> process_usec
)
609 *sleep_usec
-= process_usec
;
613 return work_done
? 1 : 0;
616 static int unix_read(struct userdata
*u
, pa_usec_t
*sleep_usec
, pa_bool_t polled
, pa_bool_t on_timeout
) {
617 int work_done
= FALSE
;
618 pa_usec_t max_sleep_usec
= 0, process_usec
= 0;
619 size_t left_to_record
;
623 pa_source_assert_ref(u
->source
);
626 hw_sleep_time(u
, &max_sleep_usec
, &process_usec
);
632 pa_bool_t after_avail
= TRUE
;
634 if (PA_UNLIKELY((n
= pa_alsa_safe_avail(u
->pcm_handle
, u
->hwbuf_size
, &u
->source
->sample_spec
)) < 0)) {
636 if ((r
= try_recover(u
, "snd_pcm_avail", (int) n
)) == 0)
642 n_bytes
= (size_t) n
* u
->frame_size
;
643 left_to_record
= check_left_to_record(u
, n_bytes
, on_timeout
);
648 pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
) > process_usec
+max_sleep_usec
/2)
651 if (PA_UNLIKELY(n_bytes
<= 0)) {
655 char *dn
= pa_alsa_get_driver_name_by_pcm(u
->pcm_handle
);
656 pa_log(_("ALSA woke us up to read new data from the device, but there was actually nothing to read!\n"
657 "Most likely this is a bug in the ALSA driver '%s'. Please report this issue to the ALSA developers.\n"
658 "We were woken up with POLLIN set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail."),
668 pa_log_debug("Not filling up, because already too many iterations.");
678 snd_pcm_sframes_t frames
;
681 chunk
.memblock
= pa_memblock_new(u
->core
->mempool
, (size_t) -1);
683 frames
= (snd_pcm_sframes_t
) (pa_memblock_get_length(chunk
.memblock
) / u
->frame_size
);
685 if (frames
> (snd_pcm_sframes_t
) (n_bytes
/u
->frame_size
))
686 frames
= (snd_pcm_sframes_t
) (n_bytes
/u
->frame_size
);
688 /* pa_log_debug("%lu frames to read", (unsigned long) n); */
690 p
= pa_memblock_acquire(chunk
.memblock
);
691 frames
= snd_pcm_readi(u
->pcm_handle
, (uint8_t*) p
, (snd_pcm_uframes_t
) frames
);
692 pa_memblock_release(chunk
.memblock
);
694 if (PA_UNLIKELY(frames
< 0)) {
695 pa_memblock_unref(chunk
.memblock
);
697 if (!after_avail
&& (int) frames
== -EAGAIN
)
700 if ((r
= try_recover(u
, "snd_pcm_readi", (int) frames
)) == 0)
706 if (!after_avail
&& frames
== 0) {
707 pa_memblock_unref(chunk
.memblock
);
711 pa_assert(frames
> 0);
715 chunk
.length
= (size_t) frames
* u
->frame_size
;
717 pa_source_post(u
->source
, &chunk
);
718 pa_memblock_unref(chunk
.memblock
);
722 u
->read_count
+= frames
* u
->frame_size
;
724 /* pa_log_debug("read %lu frames", (unsigned long) frames); */
726 if ((size_t) frames
* u
->frame_size
>= n_bytes
)
729 n_bytes
-= (size_t) frames
* u
->frame_size
;
733 *sleep_usec
= pa_bytes_to_usec(left_to_record
, &u
->source
->sample_spec
);
735 if (*sleep_usec
> process_usec
)
736 *sleep_usec
-= process_usec
;
740 return work_done
? 1 : 0;
743 static void update_smoother(struct userdata
*u
) {
744 snd_pcm_sframes_t delay
= 0;
747 pa_usec_t now1
= 0, now2
;
748 snd_pcm_status_t
*status
;
750 snd_pcm_status_alloca(&status
);
753 pa_assert(u
->pcm_handle
);
755 /* Let's update the time smoother */
757 if (PA_UNLIKELY((err
= pa_alsa_safe_delay(u
->pcm_handle
, &delay
, u
->hwbuf_size
, &u
->source
->sample_spec
)) < 0)) {
758 pa_log_warn("Failed to get delay: %s", pa_alsa_strerror(err
));
762 if (PA_UNLIKELY((err
= snd_pcm_status(u
->pcm_handle
, status
)) < 0))
763 pa_log_warn("Failed to get timestamp: %s", pa_alsa_strerror(err
));
765 snd_htimestamp_t htstamp
= { 0, 0 };
766 snd_pcm_status_get_htstamp(status
, &htstamp
);
767 now1
= pa_timespec_load(&htstamp
);
770 /* Hmm, if the timestamp is 0, then it wasn't set and we take the current time */
772 now1
= pa_rtclock_now();
774 /* check if the time since the last update is bigger than the interval */
775 if (u
->last_smoother_update
> 0)
776 if (u
->last_smoother_update
+ u
->smoother_interval
> now1
)
779 position
= u
->read_count
+ ((uint64_t) delay
* (uint64_t) u
->frame_size
);
780 now2
= pa_bytes_to_usec(position
, &u
->source
->sample_spec
);
782 pa_smoother_put(u
->smoother
, now1
, now2
);
784 u
->last_smoother_update
= now1
;
785 /* exponentially increase the update interval up to the MAX limit */
786 u
->smoother_interval
= PA_MIN (u
->smoother_interval
* 2, SMOOTHER_MAX_INTERVAL
);
789 static pa_usec_t
source_get_latency(struct userdata
*u
) {
791 pa_usec_t now1
, now2
;
795 now1
= pa_rtclock_now();
796 now2
= pa_smoother_get(u
->smoother
, now1
);
798 delay
= (int64_t) now2
- (int64_t) pa_bytes_to_usec(u
->read_count
, &u
->source
->sample_spec
);
800 return delay
>= 0 ? (pa_usec_t
) delay
: 0;
803 static int build_pollfd(struct userdata
*u
) {
805 pa_assert(u
->pcm_handle
);
807 if (u
->alsa_rtpoll_item
)
808 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
810 if (!(u
->alsa_rtpoll_item
= pa_alsa_build_pollfd(u
->pcm_handle
, u
->rtpoll
)))
816 static int suspend(struct userdata
*u
) {
818 pa_assert(u
->pcm_handle
);
820 pa_smoother_pause(u
->smoother
, pa_rtclock_now());
823 snd_pcm_close(u
->pcm_handle
);
824 u
->pcm_handle
= NULL
;
826 if (u
->alsa_rtpoll_item
) {
827 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
828 u
->alsa_rtpoll_item
= NULL
;
831 pa_log_info("Device suspended...");
836 static int update_sw_params(struct userdata
*u
) {
837 snd_pcm_uframes_t avail_min
;
842 /* Use the full buffer if noone asked us for anything specific */
848 if ((latency
= pa_source_get_requested_latency_within_thread(u
->source
)) != (pa_usec_t
) -1) {
851 pa_log_debug("latency set to %0.2fms", (double) latency
/ PA_USEC_PER_MSEC
);
853 b
= pa_usec_to_bytes(latency
, &u
->source
->sample_spec
);
855 /* We need at least one sample in our buffer */
857 if (PA_UNLIKELY(b
< u
->frame_size
))
860 u
->hwbuf_unused
= PA_LIKELY(b
< u
->hwbuf_size
) ? (u
->hwbuf_size
- b
) : 0;
863 fix_min_sleep_wakeup(u
);
864 fix_tsched_watermark(u
);
867 pa_log_debug("hwbuf_unused=%lu", (unsigned long) u
->hwbuf_unused
);
872 pa_usec_t sleep_usec
, process_usec
;
874 hw_sleep_time(u
, &sleep_usec
, &process_usec
);
875 avail_min
+= pa_usec_to_bytes(sleep_usec
, &u
->source
->sample_spec
) / u
->frame_size
;
878 pa_log_debug("setting avail_min=%lu", (unsigned long) avail_min
);
880 if ((err
= pa_alsa_set_sw_params(u
->pcm_handle
, avail_min
)) < 0) {
881 pa_log("Failed to set software parameters: %s", pa_alsa_strerror(err
));
888 static int unsuspend(struct userdata
*u
) {
893 snd_pcm_uframes_t period_size
;
896 pa_assert(!u
->pcm_handle
);
898 pa_log_info("Trying resume...");
900 if ((err
= snd_pcm_open(&u
->pcm_handle
, u
->device_name
, SND_PCM_STREAM_CAPTURE
,
901 /*SND_PCM_NONBLOCK|*/
902 SND_PCM_NO_AUTO_RESAMPLE
|
903 SND_PCM_NO_AUTO_CHANNELS
|
904 SND_PCM_NO_AUTO_FORMAT
)) < 0) {
905 pa_log("Error opening PCM device %s: %s", u
->device_name
, pa_alsa_strerror(err
));
909 ss
= u
->source
->sample_spec
;
910 nfrags
= u
->nfragments
;
911 period_size
= u
->fragment_size
/ u
->frame_size
;
915 if ((err
= pa_alsa_set_hw_params(u
->pcm_handle
, &ss
, &nfrags
, &period_size
, u
->hwbuf_size
/ u
->frame_size
, &b
, &d
, TRUE
)) < 0) {
916 pa_log("Failed to set hardware parameters: %s", pa_alsa_strerror(err
));
920 if (b
!= u
->use_mmap
|| d
!= u
->use_tsched
) {
921 pa_log_warn("Resume failed, couldn't get original access mode.");
925 if (!pa_sample_spec_equal(&ss
, &u
->source
->sample_spec
)) {
926 pa_log_warn("Resume failed, couldn't restore original sample settings.");
930 if (nfrags
!= u
->nfragments
|| period_size
*u
->frame_size
!= u
->fragment_size
) {
931 pa_log_warn("Resume failed, couldn't restore original fragment settings. (Old: %lu*%lu, New %lu*%lu)",
932 (unsigned long) u
->nfragments
, (unsigned long) u
->fragment_size
,
933 (unsigned long) nfrags
, period_size
* u
->frame_size
);
937 if (update_sw_params(u
) < 0)
940 if (build_pollfd(u
) < 0)
943 /* FIXME: We need to reload the volume somehow */
945 snd_pcm_start(u
->pcm_handle
);
948 pa_smoother_reset(u
->smoother
, pa_rtclock_now(), TRUE
);
949 u
->smoother_interval
= SMOOTHER_MIN_INTERVAL
;
950 u
->last_smoother_update
= 0;
952 pa_log_info("Resumed successfully...");
958 snd_pcm_close(u
->pcm_handle
);
959 u
->pcm_handle
= NULL
;
965 static int source_process_msg(pa_msgobject
*o
, int code
, void *data
, int64_t offset
, pa_memchunk
*chunk
) {
966 struct userdata
*u
= PA_SOURCE(o
)->userdata
;
970 case PA_SOURCE_MESSAGE_GET_LATENCY
: {
974 r
= source_get_latency(u
);
976 *((pa_usec_t
*) data
) = r
;
981 case PA_SOURCE_MESSAGE_SET_STATE
:
983 switch ((pa_source_state_t
) PA_PTR_TO_UINT(data
)) {
985 case PA_SOURCE_SUSPENDED
:
986 pa_assert(PA_SOURCE_IS_OPENED(u
->source
->thread_info
.state
));
994 case PA_SOURCE_RUNNING
:
996 if (u
->source
->thread_info
.state
== PA_SOURCE_INIT
) {
997 if (build_pollfd(u
) < 0)
1000 snd_pcm_start(u
->pcm_handle
);
1003 if (u
->source
->thread_info
.state
== PA_SOURCE_SUSPENDED
) {
1004 if (unsuspend(u
) < 0)
1010 case PA_SOURCE_UNLINKED
:
1011 case PA_SOURCE_INIT
:
1012 case PA_SOURCE_INVALID_STATE
:
1019 return pa_source_process_msg(o
, code
, data
, offset
, chunk
);
1022 /* Called from main context */
1023 static int source_set_state_cb(pa_source
*s
, pa_source_state_t new_state
) {
1024 pa_source_state_t old_state
;
1027 pa_source_assert_ref(s
);
1028 pa_assert_se(u
= s
->userdata
);
1030 old_state
= pa_source_get_state(u
->source
);
1032 if (PA_SINK_IS_OPENED(old_state
) && new_state
== PA_SINK_SUSPENDED
)
1034 else if (old_state
== PA_SINK_SUSPENDED
&& PA_SINK_IS_OPENED(new_state
))
1035 if (reserve_init(u
, u
->device_name
) < 0)
1041 static int mixer_callback(snd_mixer_elem_t
*elem
, unsigned int mask
) {
1042 struct userdata
*u
= snd_mixer_elem_get_callback_private(elem
);
1045 pa_assert(u
->mixer_handle
);
1047 if (mask
== SND_CTL_EVENT_MASK_REMOVE
)
1050 if (mask
& SND_CTL_EVENT_MASK_VALUE
) {
1051 pa_source_get_volume(u
->source
, TRUE
);
1052 pa_source_get_mute(u
->source
, TRUE
);
1058 static void source_get_volume_cb(pa_source
*s
) {
1059 struct userdata
*u
= s
->userdata
;
1061 char t
[PA_CVOLUME_SNPRINT_MAX
];
1064 pa_assert(u
->mixer_path
);
1065 pa_assert(u
->mixer_handle
);
1067 if (pa_alsa_path_get_volume(u
->mixer_path
, u
->mixer_handle
, &s
->channel_map
, &r
) < 0)
1070 /* Shift down by the base volume, so that 0dB becomes maximum volume */
1071 pa_sw_cvolume_multiply_scalar(&r
, &r
, s
->base_volume
);
1073 pa_log_debug("Read hardware volume: %s", pa_cvolume_snprint(t
, sizeof(t
), &r
));
1075 if (pa_cvolume_equal(&u
->hardware_volume
, &r
))
1078 s
->volume
= u
->hardware_volume
= r
;
1080 /* Hmm, so the hardware volume changed, let's reset our software volume */
1081 if (u
->mixer_path
->has_dB
)
1082 pa_source_set_soft_volume(s
, NULL
);
1085 static void source_set_volume_cb(pa_source
*s
) {
1086 struct userdata
*u
= s
->userdata
;
1088 char t
[PA_CVOLUME_SNPRINT_MAX
];
1091 pa_assert(u
->mixer_path
);
1092 pa_assert(u
->mixer_handle
);
1094 /* Shift up by the base volume */
1095 pa_sw_cvolume_divide_scalar(&r
, &s
->volume
, s
->base_volume
);
1097 if (pa_alsa_path_set_volume(u
->mixer_path
, u
->mixer_handle
, &s
->channel_map
, &r
) < 0)
1100 /* Shift down by the base volume, so that 0dB becomes maximum volume */
1101 pa_sw_cvolume_multiply_scalar(&r
, &r
, s
->base_volume
);
1103 u
->hardware_volume
= r
;
1105 if (u
->mixer_path
->has_dB
) {
1106 pa_cvolume new_soft_volume
;
1107 pa_bool_t accurate_enough
;
1109 /* Match exactly what the user requested by software */
1110 pa_sw_cvolume_divide(&new_soft_volume
, &s
->volume
, &u
->hardware_volume
);
1112 /* If the adjustment to do in software is only minimal we
1113 * can skip it. That saves us CPU at the expense of a bit of
1116 (pa_cvolume_min(&new_soft_volume
) >= (PA_VOLUME_NORM
- VOLUME_ACCURACY
)) &&
1117 (pa_cvolume_max(&new_soft_volume
) <= (PA_VOLUME_NORM
+ VOLUME_ACCURACY
));
1119 pa_log_debug("Requested volume: %s", pa_cvolume_snprint(t
, sizeof(t
), &s
->volume
));
1120 pa_log_debug("Got hardware volume: %s", pa_cvolume_snprint(t
, sizeof(t
), &u
->hardware_volume
));
1121 pa_log_debug("Calculated software volume: %s (accurate-enough=%s)", pa_cvolume_snprint(t
, sizeof(t
), &new_soft_volume
),
1122 pa_yes_no(accurate_enough
));
1124 if (!accurate_enough
)
1125 s
->soft_volume
= new_soft_volume
;
1128 pa_log_debug("Wrote hardware volume: %s", pa_cvolume_snprint(t
, sizeof(t
), &r
));
1130 /* We can't match exactly what the user requested, hence let's
1131 * at least tell the user about it */
1137 static void source_get_mute_cb(pa_source
*s
) {
1138 struct userdata
*u
= s
->userdata
;
1142 pa_assert(u
->mixer_path
);
1143 pa_assert(u
->mixer_handle
);
1145 if (pa_alsa_path_get_mute(u
->mixer_path
, u
->mixer_handle
, &b
) < 0)
1151 static void source_set_mute_cb(pa_source
*s
) {
1152 struct userdata
*u
= s
->userdata
;
1155 pa_assert(u
->mixer_path
);
1156 pa_assert(u
->mixer_handle
);
1158 pa_alsa_path_set_mute(u
->mixer_path
, u
->mixer_handle
, s
->muted
);
1161 static int source_set_port_cb(pa_source
*s
, pa_device_port
*p
) {
1162 struct userdata
*u
= s
->userdata
;
1163 pa_alsa_port_data
*data
;
1167 pa_assert(u
->mixer_handle
);
1169 data
= PA_DEVICE_PORT_DATA(p
);
1171 pa_assert_se(u
->mixer_path
= data
->path
);
1172 pa_alsa_path_select(u
->mixer_path
, u
->mixer_handle
);
1174 if (u
->mixer_path
->has_volume
&& u
->mixer_path
->has_dB
) {
1175 s
->base_volume
= pa_sw_volume_from_dB(-u
->mixer_path
->max_dB
);
1176 s
->n_volume_steps
= PA_VOLUME_NORM
+1;
1178 if (u
->mixer_path
->max_dB
> 0.0)
1179 pa_log_info("Fixing base volume to %0.2f dB", pa_sw_volume_to_dB(s
->base_volume
));
1181 pa_log_info("No particular base volume set, fixing to 0 dB");
1183 s
->base_volume
= PA_VOLUME_NORM
;
1184 s
->n_volume_steps
= u
->mixer_path
->max_volume
- u
->mixer_path
->min_volume
+ 1;
1188 pa_alsa_setting_select(data
->setting
, u
->mixer_handle
);
1198 static void source_update_requested_latency_cb(pa_source
*s
) {
1199 struct userdata
*u
= s
->userdata
;
1205 update_sw_params(u
);
1208 static void thread_func(void *userdata
) {
1209 struct userdata
*u
= userdata
;
1210 unsigned short revents
= 0;
1214 pa_log_debug("Thread starting up");
1216 if (u
->core
->realtime_scheduling
)
1217 pa_make_realtime(u
->core
->realtime_priority
);
1219 pa_thread_mq_install(&u
->thread_mq
);
1225 pa_log_debug("Loop");
1228 /* Read some data and pass it to the sources */
1229 if (PA_SOURCE_IS_OPENED(u
->source
->thread_info
.state
)) {
1231 pa_usec_t sleep_usec
= 0;
1232 pa_bool_t on_timeout
= pa_rtpoll_timer_elapsed(u
->rtpoll
);
1235 work_done
= mmap_read(u
, &sleep_usec
, revents
& POLLIN
, on_timeout
);
1237 work_done
= unix_read(u
, &sleep_usec
, revents
& POLLIN
, on_timeout
);
1242 /* pa_log_debug("work_done = %i", work_done); */
1247 if (u
->use_tsched
) {
1250 /* OK, the capture buffer is now empty, let's
1251 * calculate when to wake up next */
1253 /* pa_log_debug("Waking up in %0.2fms (sound card clock).", (double) sleep_usec / PA_USEC_PER_MSEC); */
1255 /* Convert from the sound card time domain to the
1256 * system time domain */
1257 cusec
= pa_smoother_translate(u
->smoother
, pa_rtclock_now(), sleep_usec
);
1259 /* pa_log_debug("Waking up in %0.2fms (system clock).", (double) cusec / PA_USEC_PER_MSEC); */
1261 /* We don't trust the conversion, so we wake up whatever comes first */
1262 pa_rtpoll_set_timer_relative(u
->rtpoll
, PA_MIN(sleep_usec
, cusec
));
1264 } else if (u
->use_tsched
)
1266 /* OK, we're in an invalid state, let's disable our timers */
1267 pa_rtpoll_set_timer_disabled(u
->rtpoll
);
1269 /* Hmm, nothing to do. Let's sleep */
1270 if ((ret
= pa_rtpoll_run(u
->rtpoll
, TRUE
)) < 0)
1276 /* Tell ALSA about this and process its response */
1277 if (PA_SOURCE_IS_OPENED(u
->source
->thread_info
.state
)) {
1278 struct pollfd
*pollfd
;
1282 pollfd
= pa_rtpoll_item_get_pollfd(u
->alsa_rtpoll_item
, &n
);
1284 if ((err
= snd_pcm_poll_descriptors_revents(u
->pcm_handle
, pollfd
, n
, &revents
)) < 0) {
1285 pa_log("snd_pcm_poll_descriptors_revents() failed: %s", pa_alsa_strerror(err
));
1289 if (revents
& ~POLLIN
) {
1290 if (pa_alsa_recover_from_poll(u
->pcm_handle
, revents
) < 0)
1293 snd_pcm_start(u
->pcm_handle
);
1294 } else if (revents
&& u
->use_tsched
&& pa_log_ratelimit())
1295 pa_log_debug("Wakeup from ALSA!");
1302 /* If this was no regular exit from the loop we have to continue
1303 * processing messages until we received PA_MESSAGE_SHUTDOWN */
1304 pa_asyncmsgq_post(u
->thread_mq
.outq
, PA_MSGOBJECT(u
->core
), PA_CORE_MESSAGE_UNLOAD_MODULE
, u
->module
, 0, NULL
, NULL
);
1305 pa_asyncmsgq_wait_for(u
->thread_mq
.inq
, PA_MESSAGE_SHUTDOWN
);
1308 pa_log_debug("Thread shutting down");
1311 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
) {
1317 pa_assert(device_name
);
1319 if ((n
= pa_modargs_get_value(ma
, "source_name", NULL
))) {
1320 pa_source_new_data_set_name(data
, n
);
1321 data
->namereg_fail
= TRUE
;
1325 if ((n
= pa_modargs_get_value(ma
, "name", NULL
)))
1326 data
->namereg_fail
= TRUE
;
1328 n
= device_id
? device_id
: device_name
;
1329 data
->namereg_fail
= FALSE
;
1333 t
= pa_sprintf_malloc("alsa_input.%s.%s", n
, mapping
->name
);
1335 t
= pa_sprintf_malloc("alsa_input.%s", n
);
1337 pa_source_new_data_set_name(data
, t
);
1341 static void find_mixer(struct userdata
*u
, pa_alsa_mapping
*mapping
, const char *element
, pa_bool_t ignore_dB
) {
1343 if (!mapping
&& !element
)
1346 if (!(u
->mixer_handle
= pa_alsa_open_mixer_for_pcm(u
->pcm_handle
, &u
->control_device
))) {
1347 pa_log_info("Failed to find a working mixer device.");
1353 if (!(u
->mixer_path
= pa_alsa_path_synthesize(element
, PA_ALSA_DIRECTION_INPUT
)))
1356 if (pa_alsa_path_probe(u
->mixer_path
, u
->mixer_handle
, ignore_dB
) < 0)
1359 pa_log_debug("Probed mixer path %s:", u
->mixer_path
->name
);
1360 pa_alsa_path_dump(u
->mixer_path
);
1363 if (!(u
->mixer_path_set
= pa_alsa_path_set_new(mapping
, PA_ALSA_DIRECTION_INPUT
)))
1366 pa_alsa_path_set_probe(u
->mixer_path_set
, u
->mixer_handle
, ignore_dB
);
1368 pa_log_debug("Probed mixer paths:");
1369 pa_alsa_path_set_dump(u
->mixer_path_set
);
1376 if (u
->mixer_path_set
) {
1377 pa_alsa_path_set_free(u
->mixer_path_set
);
1378 u
->mixer_path_set
= NULL
;
1379 } else if (u
->mixer_path
) {
1380 pa_alsa_path_free(u
->mixer_path
);
1381 u
->mixer_path
= NULL
;
1384 if (u
->mixer_handle
) {
1385 snd_mixer_close(u
->mixer_handle
);
1386 u
->mixer_handle
= NULL
;
1390 static int setup_mixer(struct userdata
*u
, pa_bool_t ignore_dB
) {
1393 if (!u
->mixer_handle
)
1396 if (u
->source
->active_port
) {
1397 pa_alsa_port_data
*data
;
1399 /* We have a list of supported paths, so let's activate the
1400 * one that has been chosen as active */
1402 data
= PA_DEVICE_PORT_DATA(u
->source
->active_port
);
1403 u
->mixer_path
= data
->path
;
1405 pa_alsa_path_select(data
->path
, u
->mixer_handle
);
1408 pa_alsa_setting_select(data
->setting
, u
->mixer_handle
);
1412 if (!u
->mixer_path
&& u
->mixer_path_set
)
1413 u
->mixer_path
= u
->mixer_path_set
->paths
;
1415 if (u
->mixer_path
) {
1416 /* Hmm, we have only a single path, then let's activate it */
1418 pa_alsa_path_select(u
->mixer_path
, u
->mixer_handle
);
1420 if (u
->mixer_path
->settings
)
1421 pa_alsa_setting_select(u
->mixer_path
->settings
, u
->mixer_handle
);
1426 if (!u
->mixer_path
->has_volume
)
1427 pa_log_info("Driver does not support hardware volume control, falling back to software volume control.");
1430 if (u
->mixer_path
->has_dB
) {
1431 pa_log_info("Hardware volume ranges from %0.2f dB to %0.2f dB.", u
->mixer_path
->min_dB
, u
->mixer_path
->max_dB
);
1433 u
->source
->base_volume
= pa_sw_volume_from_dB(-u
->mixer_path
->max_dB
);
1434 u
->source
->n_volume_steps
= PA_VOLUME_NORM
+1;
1436 if (u
->mixer_path
->max_dB
> 0.0)
1437 pa_log_info("Fixing base volume to %0.2f dB", pa_sw_volume_to_dB(u
->source
->base_volume
));
1439 pa_log_info("No particular base volume set, fixing to 0 dB");
1442 pa_log_info("Hardware volume ranges from %li to %li.", u
->mixer_path
->min_volume
, u
->mixer_path
->max_volume
);
1443 u
->source
->base_volume
= PA_VOLUME_NORM
;
1444 u
->source
->n_volume_steps
= u
->mixer_path
->max_volume
- u
->mixer_path
->min_volume
+ 1;
1447 u
->source
->get_volume
= source_get_volume_cb
;
1448 u
->source
->set_volume
= source_set_volume_cb
;
1450 u
->source
->flags
|= PA_SOURCE_HW_VOLUME_CTRL
| (u
->mixer_path
->has_dB
? PA_SOURCE_DECIBEL_VOLUME
: 0);
1451 pa_log_info("Using hardware volume control. Hardware dB scale %s.", u
->mixer_path
->has_dB
? "supported" : "not supported");
1454 if (!u
->mixer_path
->has_mute
) {
1455 pa_log_info("Driver does not support hardware mute control, falling back to software mute control.");
1457 u
->source
->get_mute
= source_get_mute_cb
;
1458 u
->source
->set_mute
= source_set_mute_cb
;
1459 u
->source
->flags
|= PA_SOURCE_HW_MUTE_CTRL
;
1460 pa_log_info("Using hardware mute control.");
1463 u
->mixer_fdl
= pa_alsa_fdlist_new();
1465 if (pa_alsa_fdlist_set_mixer(u
->mixer_fdl
, u
->mixer_handle
, u
->core
->mainloop
) < 0) {
1466 pa_log("Failed to initialize file descriptor monitoring");
1470 if (u
->mixer_path_set
)
1471 pa_alsa_path_set_set_callback(u
->mixer_path_set
, u
->mixer_handle
, mixer_callback
, u
);
1473 pa_alsa_path_set_callback(u
->mixer_path
, u
->mixer_handle
, mixer_callback
, u
);
1478 pa_source
*pa_alsa_source_new(pa_module
*m
, pa_modargs
*ma
, const char*driver
, pa_card
*card
, pa_alsa_mapping
*mapping
) {
1480 struct userdata
*u
= NULL
;
1481 const char *dev_id
= NULL
;
1482 pa_sample_spec ss
, requested_ss
;
1484 uint32_t nfrags
, hwbuf_size
, frag_size
, tsched_size
, tsched_watermark
;
1485 snd_pcm_uframes_t period_frames
, tsched_frames
;
1487 pa_bool_t use_mmap
= TRUE
, b
, use_tsched
= TRUE
, d
, ignore_dB
= FALSE
;
1488 pa_source_new_data data
;
1489 pa_alsa_profile_set
*profile_set
= NULL
;
1494 ss
= m
->core
->default_sample_spec
;
1495 map
= m
->core
->default_channel_map
;
1496 if (pa_modargs_get_sample_spec_and_channel_map(ma
, &ss
, &map
, PA_CHANNEL_MAP_ALSA
) < 0) {
1497 pa_log("Failed to parse sample specification");
1502 frame_size
= pa_frame_size(&ss
);
1504 nfrags
= m
->core
->default_n_fragments
;
1505 frag_size
= (uint32_t) pa_usec_to_bytes(m
->core
->default_fragment_size_msec
*PA_USEC_PER_MSEC
, &ss
);
1507 frag_size
= (uint32_t) frame_size
;
1508 tsched_size
= (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_BUFFER_USEC
, &ss
);
1509 tsched_watermark
= (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_WATERMARK_USEC
, &ss
);
1511 if (pa_modargs_get_value_u32(ma
, "fragments", &nfrags
) < 0 ||
1512 pa_modargs_get_value_u32(ma
, "fragment_size", &frag_size
) < 0 ||
1513 pa_modargs_get_value_u32(ma
, "tsched_buffer_size", &tsched_size
) < 0 ||
1514 pa_modargs_get_value_u32(ma
, "tsched_buffer_watermark", &tsched_watermark
) < 0) {
1515 pa_log("Failed to parse buffer metrics");
1519 hwbuf_size
= frag_size
* nfrags
;
1520 period_frames
= frag_size
/frame_size
;
1521 tsched_frames
= tsched_size
/frame_size
;
1523 if (pa_modargs_get_value_boolean(ma
, "mmap", &use_mmap
) < 0) {
1524 pa_log("Failed to parse mmap argument.");
1528 if (pa_modargs_get_value_boolean(ma
, "tsched", &use_tsched
) < 0) {
1529 pa_log("Failed to parse timer_scheduling argument.");
1533 if (pa_modargs_get_value_boolean(ma
, "ignore_dB", &ignore_dB
) < 0) {
1534 pa_log("Failed to parse ignore_dB argument.");
1538 if (use_tsched
&& !pa_rtclock_hrtimer()) {
1539 pa_log_notice("Disabling timer-based scheduling because high-resolution timers are not available from the kernel.");
1543 u
= pa_xnew0(struct userdata
, 1);
1546 u
->use_mmap
= use_mmap
;
1547 u
->use_tsched
= use_tsched
;
1548 u
->rtpoll
= pa_rtpoll_new();
1549 pa_thread_mq_init(&u
->thread_mq
, m
->core
->mainloop
, u
->rtpoll
);
1551 u
->smoother
= pa_smoother_new(
1552 DEFAULT_TSCHED_WATERMARK_USEC
*2,
1553 DEFAULT_TSCHED_WATERMARK_USEC
*2,
1559 u
->smoother_interval
= SMOOTHER_MIN_INTERVAL
;
1561 dev_id
= pa_modargs_get_value(
1563 pa_modargs_get_value(ma
, "device", DEFAULT_DEVICE
));
1565 if (reserve_init(u
, dev_id
) < 0)
1568 if (reserve_monitor_init(u
, dev_id
) < 0)
1576 if (!(dev_id
= pa_modargs_get_value(ma
, "device_id", NULL
))) {
1577 pa_log("device_id= not set");
1581 if (!(u
->pcm_handle
= pa_alsa_open_by_device_id_mapping(
1585 SND_PCM_STREAM_CAPTURE
,
1586 &nfrags
, &period_frames
, tsched_frames
,
1590 } else if ((dev_id
= pa_modargs_get_value(ma
, "device_id", NULL
))) {
1592 if (!(profile_set
= pa_alsa_profile_set_new(NULL
, &map
)))
1595 if (!(u
->pcm_handle
= pa_alsa_open_by_device_id_auto(
1599 SND_PCM_STREAM_CAPTURE
,
1600 &nfrags
, &period_frames
, tsched_frames
,
1601 &b
, &d
, profile_set
, &mapping
)))
1606 if (!(u
->pcm_handle
= pa_alsa_open_by_device_string(
1607 pa_modargs_get_value(ma
, "device", DEFAULT_DEVICE
),
1610 SND_PCM_STREAM_CAPTURE
,
1611 &nfrags
, &period_frames
, tsched_frames
,
1616 pa_assert(u
->device_name
);
1617 pa_log_info("Successfully opened device %s.", u
->device_name
);
1619 if (pa_alsa_pcm_is_modem(u
->pcm_handle
)) {
1620 pa_log_notice("Device %s is modem, refusing further initialization.", u
->device_name
);
1625 pa_log_info("Selected mapping '%s' (%s).", mapping
->description
, mapping
->name
);
1627 if (use_mmap
&& !b
) {
1628 pa_log_info("Device doesn't support mmap(), falling back to UNIX read/write mode.");
1629 u
->use_mmap
= use_mmap
= FALSE
;
1632 if (use_tsched
&& (!b
|| !d
)) {
1633 pa_log_info("Cannot enable timer-based scheduling, falling back to sound IRQ scheduling.");
1634 u
->use_tsched
= use_tsched
= FALSE
;
1637 if (use_tsched
&& !pa_alsa_pcm_is_hw(u
->pcm_handle
)) {
1638 pa_log_info("Device is not a hardware device, disabling timer-based scheduling.");
1639 u
->use_tsched
= use_tsched
= FALSE
;
1643 pa_log_info("Successfully enabled mmap() mode.");
1646 pa_log_info("Successfully enabled timer-based scheduling mode.");
1648 /* ALSA might tweak the sample spec, so recalculate the frame size */
1649 frame_size
= pa_frame_size(&ss
);
1651 find_mixer(u
, mapping
, pa_modargs_get_value(ma
, "control", NULL
), ignore_dB
);
1653 pa_source_new_data_init(&data
);
1654 data
.driver
= driver
;
1657 set_source_name(&data
, ma
, dev_id
, u
->device_name
, mapping
);
1658 pa_source_new_data_set_sample_spec(&data
, &ss
);
1659 pa_source_new_data_set_channel_map(&data
, &map
);
1661 pa_alsa_init_proplist_pcm(m
->core
, data
.proplist
, u
->pcm_handle
);
1662 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_STRING
, u
->device_name
);
1663 pa_proplist_setf(data
.proplist
, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE
, "%lu", (unsigned long) (period_frames
* frame_size
* nfrags
));
1664 pa_proplist_setf(data
.proplist
, PA_PROP_DEVICE_BUFFERING_FRAGMENT_SIZE
, "%lu", (unsigned long) (period_frames
* frame_size
));
1665 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_ACCESS_MODE
, u
->use_tsched
? "mmap+timer" : (u
->use_mmap
? "mmap" : "serial"));
1668 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_PROFILE_NAME
, mapping
->name
);
1669 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_PROFILE_DESCRIPTION
, mapping
->description
);
1672 pa_alsa_init_description(data
.proplist
);
1674 if (u
->control_device
)
1675 pa_alsa_init_proplist_ctl(data
.proplist
, u
->control_device
);
1677 if (pa_modargs_get_proplist(ma
, "source_properties", data
.proplist
, PA_UPDATE_REPLACE
) < 0) {
1678 pa_log("Invalid properties");
1679 pa_source_new_data_done(&data
);
1683 if (u
->mixer_path_set
)
1684 pa_alsa_add_ports(&data
.ports
, u
->mixer_path_set
);
1686 u
->source
= pa_source_new(m
->core
, &data
, PA_SOURCE_HARDWARE
|PA_SOURCE_LATENCY
|(u
->use_tsched
? PA_SOURCE_DYNAMIC_LATENCY
: 0));
1687 pa_source_new_data_done(&data
);
1690 pa_log("Failed to create source object");
1694 u
->source
->parent
.process_msg
= source_process_msg
;
1695 u
->source
->update_requested_latency
= source_update_requested_latency_cb
;
1696 u
->source
->set_state
= source_set_state_cb
;
1697 u
->source
->set_port
= source_set_port_cb
;
1698 u
->source
->userdata
= u
;
1700 pa_source_set_asyncmsgq(u
->source
, u
->thread_mq
.inq
);
1701 pa_source_set_rtpoll(u
->source
, u
->rtpoll
);
1703 u
->frame_size
= frame_size
;
1704 u
->fragment_size
= frag_size
= (uint32_t) (period_frames
* frame_size
);
1705 u
->nfragments
= nfrags
;
1706 u
->hwbuf_size
= u
->fragment_size
* nfrags
;
1707 pa_cvolume_mute(&u
->hardware_volume
, u
->source
->sample_spec
.channels
);
1709 pa_log_info("Using %u fragments of size %lu bytes, buffer time is %0.2fms",
1710 nfrags
, (long unsigned) u
->fragment_size
,
1711 (double) pa_bytes_to_usec(u
->hwbuf_size
, &ss
) / PA_USEC_PER_MSEC
);
1713 if (u
->use_tsched
) {
1714 u
->tsched_watermark
= pa_usec_to_bytes_round_up(pa_bytes_to_usec_round_up(tsched_watermark
, &requested_ss
), &u
->source
->sample_spec
);
1716 u
->watermark_inc_step
= pa_usec_to_bytes(TSCHED_WATERMARK_INC_STEP_USEC
, &u
->source
->sample_spec
);
1717 u
->watermark_dec_step
= pa_usec_to_bytes(TSCHED_WATERMARK_DEC_STEP_USEC
, &u
->source
->sample_spec
);
1719 u
->watermark_inc_threshold
= pa_usec_to_bytes_round_up(TSCHED_WATERMARK_INC_THRESHOLD_USEC
, &u
->source
->sample_spec
);
1720 u
->watermark_dec_threshold
= pa_usec_to_bytes_round_up(TSCHED_WATERMARK_DEC_THRESHOLD_USEC
, &u
->source
->sample_spec
);
1722 fix_min_sleep_wakeup(u
);
1723 fix_tsched_watermark(u
);
1725 pa_source_set_latency_range(u
->source
,
1727 pa_bytes_to_usec(u
->hwbuf_size
, &ss
));
1729 pa_log_info("Time scheduling watermark is %0.2fms",
1730 (double) pa_bytes_to_usec(u
->tsched_watermark
, &ss
) / PA_USEC_PER_MSEC
);
1732 pa_source_set_fixed_latency(u
->source
, pa_bytes_to_usec(u
->hwbuf_size
, &ss
));
1736 if (update_sw_params(u
) < 0)
1739 if (setup_mixer(u
, ignore_dB
) < 0)
1742 pa_alsa_dump(PA_LOG_DEBUG
, u
->pcm_handle
);
1744 if (!(u
->thread
= pa_thread_new(thread_func
, u
))) {
1745 pa_log("Failed to create thread.");
1748 /* Get initial mixer settings */
1749 if (data
.volume_is_set
) {
1750 if (u
->source
->set_volume
)
1751 u
->source
->set_volume(u
->source
);
1753 if (u
->source
->get_volume
)
1754 u
->source
->get_volume(u
->source
);
1757 if (data
.muted_is_set
) {
1758 if (u
->source
->set_mute
)
1759 u
->source
->set_mute(u
->source
);
1761 if (u
->source
->get_mute
)
1762 u
->source
->get_mute(u
->source
);
1765 pa_source_put(u
->source
);
1768 pa_alsa_profile_set_free(profile_set
);
1778 pa_alsa_profile_set_free(profile_set
);
1783 static void userdata_free(struct userdata
*u
) {
1787 pa_source_unlink(u
->source
);
1790 pa_asyncmsgq_send(u
->thread_mq
.inq
, NULL
, PA_MESSAGE_SHUTDOWN
, NULL
, 0, NULL
);
1791 pa_thread_free(u
->thread
);
1794 pa_thread_mq_done(&u
->thread_mq
);
1797 pa_source_unref(u
->source
);
1799 if (u
->alsa_rtpoll_item
)
1800 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
1803 pa_rtpoll_free(u
->rtpoll
);
1805 if (u
->pcm_handle
) {
1806 snd_pcm_drop(u
->pcm_handle
);
1807 snd_pcm_close(u
->pcm_handle
);
1811 pa_alsa_fdlist_free(u
->mixer_fdl
);
1813 if (u
->mixer_path_set
)
1814 pa_alsa_path_set_free(u
->mixer_path_set
);
1815 else if (u
->mixer_path
)
1816 pa_alsa_path_free(u
->mixer_path
);
1818 if (u
->mixer_handle
)
1819 snd_mixer_close(u
->mixer_handle
);
1822 pa_smoother_free(u
->smoother
);
1827 pa_xfree(u
->device_name
);
1828 pa_xfree(u
->control_device
);
1832 void pa_alsa_source_free(pa_source
*s
) {
1835 pa_source_assert_ref(s
);
1836 pa_assert_se(u
= s
->userdata
);