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 #ifdef HAVE_VALGRIND_MEMCHECK_H
32 #include <valgrind/memcheck.h>
35 #include <pulse/rtclock.h>
36 #include <pulse/timeval.h>
37 #include <pulse/volume.h>
38 #include <pulse/xmalloc.h>
39 #include <pulse/internal.h>
41 #include <pulsecore/core.h>
42 #include <pulsecore/i18n.h>
43 #include <pulsecore/module.h>
44 #include <pulsecore/memchunk.h>
45 #include <pulsecore/sink.h>
46 #include <pulsecore/modargs.h>
47 #include <pulsecore/core-rtclock.h>
48 #include <pulsecore/core-util.h>
49 #include <pulsecore/sample-util.h>
50 #include <pulsecore/log.h>
51 #include <pulsecore/macro.h>
52 #include <pulsecore/thread.h>
53 #include <pulsecore/thread-mq.h>
54 #include <pulsecore/rtpoll.h>
55 #include <pulsecore/time-smoother.h>
57 #include <modules/reserve-wrap.h>
59 #include "alsa-util.h"
60 #include "alsa-sink.h"
62 /* #define DEBUG_TIMING */
64 #define DEFAULT_DEVICE "default"
66 #define DEFAULT_TSCHED_BUFFER_USEC (2*PA_USEC_PER_SEC) /* 2s -- Overall buffer size */
67 #define DEFAULT_TSCHED_WATERMARK_USEC (20*PA_USEC_PER_MSEC) /* 20ms -- Fill up when only this much is left in the buffer */
69 #define TSCHED_WATERMARK_INC_STEP_USEC (10*PA_USEC_PER_MSEC) /* 10ms -- On underrun, increase watermark by this */
70 #define TSCHED_WATERMARK_DEC_STEP_USEC (5*PA_USEC_PER_MSEC) /* 5ms -- When everything's great, decrease watermark by this */
71 #define TSCHED_WATERMARK_VERIFY_AFTER_USEC (20*PA_USEC_PER_SEC) /* 20s -- How long after a drop out recheck if things are good now */
72 #define TSCHED_WATERMARK_INC_THRESHOLD_USEC (0*PA_USEC_PER_MSEC) /* 0ms -- If the buffer level ever below this threshold, increase the watermark */
73 #define TSCHED_WATERMARK_DEC_THRESHOLD_USEC (100*PA_USEC_PER_MSEC) /* 100ms -- If the buffer level didn't drop below this threshold in the verification time, decrease the watermark */
75 /* Note that TSCHED_WATERMARK_INC_THRESHOLD_USEC == 0 means that we
76 * will increase the watermark only if we hit a real underrun. */
78 #define TSCHED_MIN_SLEEP_USEC (10*PA_USEC_PER_MSEC) /* 10ms -- Sleep at least 10ms on each iteration */
79 #define TSCHED_MIN_WAKEUP_USEC (4*PA_USEC_PER_MSEC) /* 4ms -- Wakeup at least this long before the buffer runs empty*/
81 #define SMOOTHER_WINDOW_USEC (10*PA_USEC_PER_SEC) /* 10s -- smoother windows size */
82 #define SMOOTHER_ADJUST_USEC (1*PA_USEC_PER_SEC) /* 1s -- smoother adjust time */
84 #define SMOOTHER_MIN_INTERVAL (2*PA_USEC_PER_MSEC) /* 2ms -- min smoother update interval */
85 #define SMOOTHER_MAX_INTERVAL (200*PA_USEC_PER_MSEC) /* 200ms -- max smoother update interval */
87 #define VOLUME_ACCURACY (PA_VOLUME_NORM/100) /* don't require volume adjustments to be perfectly correct. don't necessarily extend granularity in software unless the differences get greater than this level */
89 #define DEFAULT_REWIND_SAFEGUARD_BYTES (256U) /* 1.33ms @48kHz, we'll never rewind less than this */
90 #define DEFAULT_REWIND_SAFEGUARD_USEC (1330) /* 1.33ms, depending on channels/rate/sample we may rewind more than 256 above */
98 pa_thread_mq thread_mq
;
101 snd_pcm_t
*pcm_handle
;
103 pa_alsa_fdlist
*mixer_fdl
;
104 pa_alsa_mixer_pdata
*mixer_pd
;
105 snd_mixer_t
*mixer_handle
;
106 pa_alsa_path_set
*mixer_path_set
;
107 pa_alsa_path
*mixer_path
;
109 pa_cvolume hardware_volume
;
123 watermark_inc_threshold
,
124 watermark_dec_threshold
,
127 pa_usec_t watermark_dec_not_before
;
129 pa_memchunk memchunk
;
131 char *device_name
; /* name of the PCM device */
132 char *control_device
; /* name of the control device */
134 pa_bool_t use_mmap
:1, use_tsched
:1, deferred_volume
:1;
136 pa_bool_t first
, after_rewind
;
138 pa_rtpoll_item
*alsa_rtpoll_item
;
140 snd_mixer_selem_channel_id_t mixer_map
[SND_MIXER_SCHN_LAST
];
142 pa_smoother
*smoother
;
143 uint64_t write_count
;
144 uint64_t since_start
;
145 pa_usec_t smoother_interval
;
146 pa_usec_t last_smoother_update
;
150 pa_reserve_wrapper
*reserve
;
151 pa_hook_slot
*reserve_slot
;
152 pa_reserve_monitor_wrapper
*monitor
;
153 pa_hook_slot
*monitor_slot
;
156 static void userdata_free(struct userdata
*u
);
158 /* FIXME: Is there a better way to do this than device names? */
159 static pa_bool_t
is_iec958(struct userdata
*u
) {
160 return (strncmp("iec958", u
->device_name
, 6) == 0);
163 static pa_bool_t
is_hdmi(struct userdata
*u
) {
164 return (strncmp("hdmi", u
->device_name
, 4) == 0);
167 static pa_hook_result_t
reserve_cb(pa_reserve_wrapper
*r
, void *forced
, struct userdata
*u
) {
171 if (pa_sink_suspend(u
->sink
, TRUE
, PA_SUSPEND_APPLICATION
) < 0)
172 return PA_HOOK_CANCEL
;
177 static void reserve_done(struct userdata
*u
) {
180 if (u
->reserve_slot
) {
181 pa_hook_slot_free(u
->reserve_slot
);
182 u
->reserve_slot
= NULL
;
186 pa_reserve_wrapper_unref(u
->reserve
);
191 static void reserve_update(struct userdata
*u
) {
192 const char *description
;
195 if (!u
->sink
|| !u
->reserve
)
198 if ((description
= pa_proplist_gets(u
->sink
->proplist
, PA_PROP_DEVICE_DESCRIPTION
)))
199 pa_reserve_wrapper_set_application_device_name(u
->reserve
, description
);
202 static int reserve_init(struct userdata
*u
, const char *dname
) {
211 if (pa_in_system_mode())
214 if (!(rname
= pa_alsa_get_reserve_name(dname
)))
217 /* We are resuming, try to lock the device */
218 u
->reserve
= pa_reserve_wrapper_get(u
->core
, rname
);
226 pa_assert(!u
->reserve_slot
);
227 u
->reserve_slot
= pa_hook_connect(pa_reserve_wrapper_hook(u
->reserve
), PA_HOOK_NORMAL
, (pa_hook_cb_t
) reserve_cb
, u
);
232 static pa_hook_result_t
monitor_cb(pa_reserve_monitor_wrapper
*w
, void* busy
, struct userdata
*u
) {
238 b
= PA_PTR_TO_UINT(busy
) && !u
->reserve
;
240 pa_sink_suspend(u
->sink
, b
, PA_SUSPEND_APPLICATION
);
244 static void monitor_done(struct userdata
*u
) {
247 if (u
->monitor_slot
) {
248 pa_hook_slot_free(u
->monitor_slot
);
249 u
->monitor_slot
= NULL
;
253 pa_reserve_monitor_wrapper_unref(u
->monitor
);
258 static int reserve_monitor_init(struct userdata
*u
, const char *dname
) {
264 if (pa_in_system_mode())
267 if (!(rname
= pa_alsa_get_reserve_name(dname
)))
270 /* We are resuming, try to lock the device */
271 u
->monitor
= pa_reserve_monitor_wrapper_get(u
->core
, rname
);
277 pa_assert(!u
->monitor_slot
);
278 u
->monitor_slot
= pa_hook_connect(pa_reserve_monitor_wrapper_hook(u
->monitor
), PA_HOOK_NORMAL
, (pa_hook_cb_t
) monitor_cb
, u
);
283 static void fix_min_sleep_wakeup(struct userdata
*u
) {
284 size_t max_use
, max_use_2
;
287 pa_assert(u
->use_tsched
);
289 max_use
= u
->hwbuf_size
- u
->hwbuf_unused
;
290 max_use_2
= pa_frame_align(max_use
/2, &u
->sink
->sample_spec
);
292 u
->min_sleep
= pa_usec_to_bytes(TSCHED_MIN_SLEEP_USEC
, &u
->sink
->sample_spec
);
293 u
->min_sleep
= PA_CLAMP(u
->min_sleep
, u
->frame_size
, max_use_2
);
295 u
->min_wakeup
= pa_usec_to_bytes(TSCHED_MIN_WAKEUP_USEC
, &u
->sink
->sample_spec
);
296 u
->min_wakeup
= PA_CLAMP(u
->min_wakeup
, u
->frame_size
, max_use_2
);
299 static void fix_tsched_watermark(struct userdata
*u
) {
302 pa_assert(u
->use_tsched
);
304 max_use
= u
->hwbuf_size
- u
->hwbuf_unused
;
306 if (u
->tsched_watermark
> max_use
- u
->min_sleep
)
307 u
->tsched_watermark
= max_use
- u
->min_sleep
;
309 if (u
->tsched_watermark
< u
->min_wakeup
)
310 u
->tsched_watermark
= u
->min_wakeup
;
313 static void increase_watermark(struct userdata
*u
) {
314 size_t old_watermark
;
315 pa_usec_t old_min_latency
, new_min_latency
;
318 pa_assert(u
->use_tsched
);
320 /* First, just try to increase the watermark */
321 old_watermark
= u
->tsched_watermark
;
322 u
->tsched_watermark
= PA_MIN(u
->tsched_watermark
* 2, u
->tsched_watermark
+ u
->watermark_inc_step
);
323 fix_tsched_watermark(u
);
325 if (old_watermark
!= u
->tsched_watermark
) {
326 pa_log_info("Increasing wakeup watermark to %0.2f ms",
327 (double) pa_bytes_to_usec(u
->tsched_watermark
, &u
->sink
->sample_spec
) / PA_USEC_PER_MSEC
);
331 /* Hmm, we cannot increase the watermark any further, hence let's raise the latency */
332 old_min_latency
= u
->sink
->thread_info
.min_latency
;
333 new_min_latency
= PA_MIN(old_min_latency
* 2, old_min_latency
+ TSCHED_WATERMARK_INC_STEP_USEC
);
334 new_min_latency
= PA_MIN(new_min_latency
, u
->sink
->thread_info
.max_latency
);
336 if (old_min_latency
!= new_min_latency
) {
337 pa_log_info("Increasing minimal latency to %0.2f ms",
338 (double) new_min_latency
/ PA_USEC_PER_MSEC
);
340 pa_sink_set_latency_range_within_thread(u
->sink
, new_min_latency
, u
->sink
->thread_info
.max_latency
);
343 /* When we reach this we're officialy fucked! */
346 static void decrease_watermark(struct userdata
*u
) {
347 size_t old_watermark
;
351 pa_assert(u
->use_tsched
);
353 now
= pa_rtclock_now();
355 if (u
->watermark_dec_not_before
<= 0)
358 if (u
->watermark_dec_not_before
> now
)
361 old_watermark
= u
->tsched_watermark
;
363 if (u
->tsched_watermark
< u
->watermark_dec_step
)
364 u
->tsched_watermark
= u
->tsched_watermark
/ 2;
366 u
->tsched_watermark
= PA_MAX(u
->tsched_watermark
/ 2, u
->tsched_watermark
- u
->watermark_dec_step
);
368 fix_tsched_watermark(u
);
370 if (old_watermark
!= u
->tsched_watermark
)
371 pa_log_info("Decreasing wakeup watermark to %0.2f ms",
372 (double) pa_bytes_to_usec(u
->tsched_watermark
, &u
->sink
->sample_spec
) / PA_USEC_PER_MSEC
);
374 /* We don't change the latency range*/
377 u
->watermark_dec_not_before
= now
+ TSCHED_WATERMARK_VERIFY_AFTER_USEC
;
380 static void hw_sleep_time(struct userdata
*u
, pa_usec_t
*sleep_usec
, pa_usec_t
*process_usec
) {
383 pa_assert(sleep_usec
);
384 pa_assert(process_usec
);
387 pa_assert(u
->use_tsched
);
389 usec
= pa_sink_get_requested_latency_within_thread(u
->sink
);
391 if (usec
== (pa_usec_t
) -1)
392 usec
= pa_bytes_to_usec(u
->hwbuf_size
, &u
->sink
->sample_spec
);
394 wm
= pa_bytes_to_usec(u
->tsched_watermark
, &u
->sink
->sample_spec
);
399 *sleep_usec
= usec
- wm
;
403 pa_log_debug("Buffer time: %lu ms; Sleep time: %lu ms; Process time: %lu ms",
404 (unsigned long) (usec
/ PA_USEC_PER_MSEC
),
405 (unsigned long) (*sleep_usec
/ PA_USEC_PER_MSEC
),
406 (unsigned long) (*process_usec
/ PA_USEC_PER_MSEC
));
410 static int try_recover(struct userdata
*u
, const char *call
, int err
) {
415 pa_log_debug("%s: %s", call
, pa_alsa_strerror(err
));
417 pa_assert(err
!= -EAGAIN
);
420 pa_log_debug("%s: Buffer underrun!", call
);
422 if (err
== -ESTRPIPE
)
423 pa_log_debug("%s: System suspended!", call
);
425 if ((err
= snd_pcm_recover(u
->pcm_handle
, err
, 1)) < 0) {
426 pa_log("%s: %s", call
, pa_alsa_strerror(err
));
435 static size_t check_left_to_play(struct userdata
*u
, size_t n_bytes
, pa_bool_t on_timeout
) {
437 pa_bool_t underrun
= FALSE
;
439 /* We use <= instead of < for this check here because an underrun
440 * only happens after the last sample was processed, not already when
441 * it is removed from the buffer. This is particularly important
442 * when block transfer is used. */
444 if (n_bytes
<= u
->hwbuf_size
)
445 left_to_play
= u
->hwbuf_size
- n_bytes
;
448 /* We got a dropout. What a mess! */
456 if (!u
->first
&& !u
->after_rewind
)
457 if (pa_log_ratelimit(PA_LOG_INFO
))
458 pa_log_info("Underrun!");
462 pa_log_debug("%0.2f ms left to play; inc threshold = %0.2f ms; dec threshold = %0.2f ms",
463 (double) pa_bytes_to_usec(left_to_play
, &u
->sink
->sample_spec
) / PA_USEC_PER_MSEC
,
464 (double) pa_bytes_to_usec(u
->watermark_inc_threshold
, &u
->sink
->sample_spec
) / PA_USEC_PER_MSEC
,
465 (double) pa_bytes_to_usec(u
->watermark_dec_threshold
, &u
->sink
->sample_spec
) / PA_USEC_PER_MSEC
);
469 pa_bool_t reset_not_before
= TRUE
;
471 if (!u
->first
&& !u
->after_rewind
) {
472 if (underrun
|| left_to_play
< u
->watermark_inc_threshold
)
473 increase_watermark(u
);
474 else if (left_to_play
> u
->watermark_dec_threshold
) {
475 reset_not_before
= FALSE
;
477 /* We decrease the watermark only if have actually
478 * been woken up by a timeout. If something else woke
479 * us up it's too easy to fulfill the deadlines... */
482 decrease_watermark(u
);
486 if (reset_not_before
)
487 u
->watermark_dec_not_before
= 0;
493 static int mmap_write(struct userdata
*u
, pa_usec_t
*sleep_usec
, pa_bool_t polled
, pa_bool_t on_timeout
) {
494 pa_bool_t work_done
= FALSE
;
495 pa_usec_t max_sleep_usec
= 0, process_usec
= 0;
500 pa_sink_assert_ref(u
->sink
);
503 hw_sleep_time(u
, &max_sleep_usec
, &process_usec
);
509 pa_bool_t after_avail
= TRUE
;
511 /* First we determine how many samples are missing to fill the
512 * buffer up to 100% */
514 if (PA_UNLIKELY((n
= pa_alsa_safe_avail(u
->pcm_handle
, u
->hwbuf_size
, &u
->sink
->sample_spec
)) < 0)) {
516 if ((r
= try_recover(u
, "snd_pcm_avail", (int) n
)) == 0)
522 n_bytes
= (size_t) n
* u
->frame_size
;
525 pa_log_debug("avail: %lu", (unsigned long) n_bytes
);
528 left_to_play
= check_left_to_play(u
, n_bytes
, on_timeout
);
533 /* We won't fill up the playback buffer before at least
534 * half the sleep time is over because otherwise we might
535 * ask for more data from the clients then they expect. We
536 * need to guarantee that clients only have to keep around
537 * a single hw buffer length. */
540 pa_bytes_to_usec(left_to_play
, &u
->sink
->sample_spec
) > process_usec
+max_sleep_usec
/2) {
542 pa_log_debug("Not filling up, because too early.");
547 if (PA_UNLIKELY(n_bytes
<= u
->hwbuf_unused
)) {
551 char *dn
= pa_alsa_get_driver_name_by_pcm(u
->pcm_handle
);
552 pa_log(_("ALSA woke us up to write new data to the device, but there was actually nothing to write!\n"
553 "Most likely this is a bug in the ALSA driver '%s'. Please report this issue to the ALSA developers.\n"
554 "We were woken up with POLLOUT set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail."),
560 pa_log_debug("Not filling up, because not necessary.");
568 pa_log_debug("Not filling up, because already too many iterations.");
574 n_bytes
-= u
->hwbuf_unused
;
578 pa_log_debug("Filling up");
585 const snd_pcm_channel_area_t
*areas
;
586 snd_pcm_uframes_t offset
, frames
;
587 snd_pcm_sframes_t sframes
;
589 frames
= (snd_pcm_uframes_t
) (n_bytes
/ u
->frame_size
);
590 /* pa_log_debug("%lu frames to write", (unsigned long) frames); */
592 if (PA_UNLIKELY((err
= pa_alsa_safe_mmap_begin(u
->pcm_handle
, &areas
, &offset
, &frames
, u
->hwbuf_size
, &u
->sink
->sample_spec
)) < 0)) {
594 if (!after_avail
&& err
== -EAGAIN
)
597 if ((r
= try_recover(u
, "snd_pcm_mmap_begin", err
)) == 0)
603 /* Make sure that if these memblocks need to be copied they will fit into one slot */
604 if (frames
> pa_mempool_block_size_max(u
->core
->mempool
)/u
->frame_size
)
605 frames
= pa_mempool_block_size_max(u
->core
->mempool
)/u
->frame_size
;
607 if (!after_avail
&& frames
== 0)
610 pa_assert(frames
> 0);
613 /* Check these are multiples of 8 bit */
614 pa_assert((areas
[0].first
& 7) == 0);
615 pa_assert((areas
[0].step
& 7)== 0);
617 /* We assume a single interleaved memory buffer */
618 pa_assert((areas
[0].first
>> 3) == 0);
619 pa_assert((areas
[0].step
>> 3) == u
->frame_size
);
621 p
= (uint8_t*) areas
[0].addr
+ (offset
* u
->frame_size
);
623 chunk
.memblock
= pa_memblock_new_fixed(u
->core
->mempool
, p
, frames
* u
->frame_size
, TRUE
);
624 chunk
.length
= pa_memblock_get_length(chunk
.memblock
);
627 pa_sink_render_into_full(u
->sink
, &chunk
);
628 pa_memblock_unref_fixed(chunk
.memblock
);
630 if (PA_UNLIKELY((sframes
= snd_pcm_mmap_commit(u
->pcm_handle
, offset
, frames
)) < 0)) {
632 if (!after_avail
&& (int) sframes
== -EAGAIN
)
635 if ((r
= try_recover(u
, "snd_pcm_mmap_commit", (int) sframes
)) == 0)
643 u
->write_count
+= frames
* u
->frame_size
;
644 u
->since_start
+= frames
* u
->frame_size
;
647 pa_log_debug("Wrote %lu bytes (of possible %lu bytes)", (unsigned long) (frames
* u
->frame_size
), (unsigned long) n_bytes
);
650 if ((size_t) frames
* u
->frame_size
>= n_bytes
)
653 n_bytes
-= (size_t) frames
* u
->frame_size
;
658 *sleep_usec
= pa_bytes_to_usec(left_to_play
, &u
->sink
->sample_spec
);
659 process_usec
= pa_bytes_to_usec(u
->tsched_watermark
, &u
->sink
->sample_spec
);
661 if (*sleep_usec
> process_usec
)
662 *sleep_usec
-= process_usec
;
668 return work_done
? 1 : 0;
671 static int unix_write(struct userdata
*u
, pa_usec_t
*sleep_usec
, pa_bool_t polled
, pa_bool_t on_timeout
) {
672 pa_bool_t work_done
= FALSE
;
673 pa_usec_t max_sleep_usec
= 0, process_usec
= 0;
678 pa_sink_assert_ref(u
->sink
);
681 hw_sleep_time(u
, &max_sleep_usec
, &process_usec
);
687 pa_bool_t after_avail
= TRUE
;
689 if (PA_UNLIKELY((n
= pa_alsa_safe_avail(u
->pcm_handle
, u
->hwbuf_size
, &u
->sink
->sample_spec
)) < 0)) {
691 if ((r
= try_recover(u
, "snd_pcm_avail", (int) n
)) == 0)
697 n_bytes
= (size_t) n
* u
->frame_size
;
698 left_to_play
= check_left_to_play(u
, n_bytes
, on_timeout
);
703 /* We won't fill up the playback buffer before at least
704 * half the sleep time is over because otherwise we might
705 * ask for more data from the clients then they expect. We
706 * need to guarantee that clients only have to keep around
707 * a single hw buffer length. */
710 pa_bytes_to_usec(left_to_play
, &u
->sink
->sample_spec
) > process_usec
+max_sleep_usec
/2)
713 if (PA_UNLIKELY(n_bytes
<= u
->hwbuf_unused
)) {
717 char *dn
= pa_alsa_get_driver_name_by_pcm(u
->pcm_handle
);
718 pa_log(_("ALSA woke us up to write new data to the device, but there was actually nothing to write!\n"
719 "Most likely this is a bug in the ALSA driver '%s'. Please report this issue to the ALSA developers.\n"
720 "We were woken up with POLLOUT set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail."),
730 pa_log_debug("Not filling up, because already too many iterations.");
736 n_bytes
-= u
->hwbuf_unused
;
740 snd_pcm_sframes_t frames
;
743 /* pa_log_debug("%lu frames to write", (unsigned long) frames); */
745 if (u
->memchunk
.length
<= 0)
746 pa_sink_render(u
->sink
, n_bytes
, &u
->memchunk
);
748 pa_assert(u
->memchunk
.length
> 0);
750 frames
= (snd_pcm_sframes_t
) (u
->memchunk
.length
/ u
->frame_size
);
752 if (frames
> (snd_pcm_sframes_t
) (n_bytes
/u
->frame_size
))
753 frames
= (snd_pcm_sframes_t
) (n_bytes
/u
->frame_size
);
755 p
= pa_memblock_acquire(u
->memchunk
.memblock
);
756 frames
= snd_pcm_writei(u
->pcm_handle
, (const uint8_t*) p
+ u
->memchunk
.index
, (snd_pcm_uframes_t
) frames
);
757 pa_memblock_release(u
->memchunk
.memblock
);
759 if (PA_UNLIKELY(frames
< 0)) {
761 if (!after_avail
&& (int) frames
== -EAGAIN
)
764 if ((r
= try_recover(u
, "snd_pcm_writei", (int) frames
)) == 0)
770 if (!after_avail
&& frames
== 0)
773 pa_assert(frames
> 0);
776 u
->memchunk
.index
+= (size_t) frames
* u
->frame_size
;
777 u
->memchunk
.length
-= (size_t) frames
* u
->frame_size
;
779 if (u
->memchunk
.length
<= 0) {
780 pa_memblock_unref(u
->memchunk
.memblock
);
781 pa_memchunk_reset(&u
->memchunk
);
786 u
->write_count
+= frames
* u
->frame_size
;
787 u
->since_start
+= frames
* u
->frame_size
;
789 /* pa_log_debug("wrote %lu frames", (unsigned long) frames); */
791 if ((size_t) frames
* u
->frame_size
>= n_bytes
)
794 n_bytes
-= (size_t) frames
* u
->frame_size
;
799 *sleep_usec
= pa_bytes_to_usec(left_to_play
, &u
->sink
->sample_spec
);
800 process_usec
= pa_bytes_to_usec(u
->tsched_watermark
, &u
->sink
->sample_spec
);
802 if (*sleep_usec
> process_usec
)
803 *sleep_usec
-= process_usec
;
809 return work_done
? 1 : 0;
812 static void update_smoother(struct userdata
*u
) {
813 snd_pcm_sframes_t delay
= 0;
816 pa_usec_t now1
= 0, now2
;
817 snd_pcm_status_t
*status
;
819 snd_pcm_status_alloca(&status
);
822 pa_assert(u
->pcm_handle
);
824 /* Let's update the time smoother */
826 if (PA_UNLIKELY((err
= pa_alsa_safe_delay(u
->pcm_handle
, &delay
, u
->hwbuf_size
, &u
->sink
->sample_spec
, FALSE
)) < 0)) {
827 pa_log_warn("Failed to query DSP status data: %s", pa_alsa_strerror(err
));
831 if (PA_UNLIKELY((err
= snd_pcm_status(u
->pcm_handle
, status
)) < 0))
832 pa_log_warn("Failed to get timestamp: %s", pa_alsa_strerror(err
));
834 snd_htimestamp_t htstamp
= { 0, 0 };
835 snd_pcm_status_get_htstamp(status
, &htstamp
);
836 now1
= pa_timespec_load(&htstamp
);
839 /* Hmm, if the timestamp is 0, then it wasn't set and we take the current time */
841 now1
= pa_rtclock_now();
843 /* check if the time since the last update is bigger than the interval */
844 if (u
->last_smoother_update
> 0)
845 if (u
->last_smoother_update
+ u
->smoother_interval
> now1
)
848 position
= (int64_t) u
->write_count
- ((int64_t) delay
* (int64_t) u
->frame_size
);
850 if (PA_UNLIKELY(position
< 0))
853 now2
= pa_bytes_to_usec((uint64_t) position
, &u
->sink
->sample_spec
);
855 pa_smoother_put(u
->smoother
, now1
, now2
);
857 u
->last_smoother_update
= now1
;
858 /* exponentially increase the update interval up to the MAX limit */
859 u
->smoother_interval
= PA_MIN (u
->smoother_interval
* 2, SMOOTHER_MAX_INTERVAL
);
862 static pa_usec_t
sink_get_latency(struct userdata
*u
) {
865 pa_usec_t now1
, now2
;
869 now1
= pa_rtclock_now();
870 now2
= pa_smoother_get(u
->smoother
, now1
);
872 delay
= (int64_t) pa_bytes_to_usec(u
->write_count
, &u
->sink
->sample_spec
) - (int64_t) now2
;
874 r
= delay
>= 0 ? (pa_usec_t
) delay
: 0;
876 if (u
->memchunk
.memblock
)
877 r
+= pa_bytes_to_usec(u
->memchunk
.length
, &u
->sink
->sample_spec
);
882 static int build_pollfd(struct userdata
*u
) {
884 pa_assert(u
->pcm_handle
);
886 if (u
->alsa_rtpoll_item
)
887 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
889 if (!(u
->alsa_rtpoll_item
= pa_alsa_build_pollfd(u
->pcm_handle
, u
->rtpoll
)))
895 /* Called from IO context */
896 static int suspend(struct userdata
*u
) {
898 pa_assert(u
->pcm_handle
);
900 pa_smoother_pause(u
->smoother
, pa_rtclock_now());
902 /* Let's suspend -- we don't call snd_pcm_drain() here since that might
903 * take awfully long with our long buffer sizes today. */
904 snd_pcm_close(u
->pcm_handle
);
905 u
->pcm_handle
= NULL
;
907 if (u
->alsa_rtpoll_item
) {
908 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
909 u
->alsa_rtpoll_item
= NULL
;
912 /* We reset max_rewind/max_request here to make sure that while we
913 * are suspended the old max_request/max_rewind values set before
914 * the suspend can influence the per-stream buffer of newly
915 * created streams, without their requirements having any
916 * influence on them. */
917 pa_sink_set_max_rewind_within_thread(u
->sink
, 0);
918 pa_sink_set_max_request_within_thread(u
->sink
, 0);
920 pa_log_info("Device suspended...");
925 /* Called from IO context */
926 static int update_sw_params(struct userdata
*u
) {
927 snd_pcm_uframes_t avail_min
;
932 /* Use the full buffer if no one asked us for anything specific */
938 if ((latency
= pa_sink_get_requested_latency_within_thread(u
->sink
)) != (pa_usec_t
) -1) {
941 pa_log_debug("Latency set to %0.2fms", (double) latency
/ PA_USEC_PER_MSEC
);
943 b
= pa_usec_to_bytes(latency
, &u
->sink
->sample_spec
);
945 /* We need at least one sample in our buffer */
947 if (PA_UNLIKELY(b
< u
->frame_size
))
950 u
->hwbuf_unused
= PA_LIKELY(b
< u
->hwbuf_size
) ? (u
->hwbuf_size
- b
) : 0;
953 fix_min_sleep_wakeup(u
);
954 fix_tsched_watermark(u
);
957 pa_log_debug("hwbuf_unused=%lu", (unsigned long) u
->hwbuf_unused
);
959 /* We need at last one frame in the used part of the buffer */
960 avail_min
= (snd_pcm_uframes_t
) u
->hwbuf_unused
/ u
->frame_size
+ 1;
963 pa_usec_t sleep_usec
, process_usec
;
965 hw_sleep_time(u
, &sleep_usec
, &process_usec
);
966 avail_min
+= pa_usec_to_bytes(sleep_usec
, &u
->sink
->sample_spec
) / u
->frame_size
;
969 pa_log_debug("setting avail_min=%lu", (unsigned long) avail_min
);
971 if ((err
= pa_alsa_set_sw_params(u
->pcm_handle
, avail_min
, !u
->use_tsched
)) < 0) {
972 pa_log("Failed to set software parameters: %s", pa_alsa_strerror(err
));
976 pa_sink_set_max_request_within_thread(u
->sink
, u
->hwbuf_size
- u
->hwbuf_unused
);
977 if (pa_alsa_pcm_is_hw(u
->pcm_handle
))
978 pa_sink_set_max_rewind_within_thread(u
->sink
, u
->hwbuf_size
);
980 pa_log_info("Disabling rewind_within_thread for device %s", u
->device_name
);
981 pa_sink_set_max_rewind_within_thread(u
->sink
, 0);
987 /* Called from IO context */
988 static int unsuspend(struct userdata
*u
) {
992 snd_pcm_uframes_t period_size
, buffer_size
;
993 char *device_name
= NULL
;
996 pa_assert(!u
->pcm_handle
);
998 pa_log_info("Trying resume...");
1000 if ((is_iec958(u
) || is_hdmi(u
)) && pa_sink_is_passthrough(u
->sink
)) {
1001 /* Need to open device in NONAUDIO mode */
1002 int len
= strlen(u
->device_name
) + 8;
1004 device_name
= pa_xmalloc(len
);
1005 pa_snprintf(device_name
, len
, "%s,AES0=6", u
->device_name
);
1008 if ((err
= snd_pcm_open(&u
->pcm_handle
, device_name
? device_name
: u
->device_name
, SND_PCM_STREAM_PLAYBACK
,
1010 SND_PCM_NO_AUTO_RESAMPLE
|
1011 SND_PCM_NO_AUTO_CHANNELS
|
1012 SND_PCM_NO_AUTO_FORMAT
)) < 0) {
1013 pa_log("Error opening PCM device %s: %s", u
->device_name
, pa_alsa_strerror(err
));
1017 ss
= u
->sink
->sample_spec
;
1018 period_size
= u
->fragment_size
/ u
->frame_size
;
1019 buffer_size
= u
->hwbuf_size
/ u
->frame_size
;
1023 if ((err
= pa_alsa_set_hw_params(u
->pcm_handle
, &ss
, &period_size
, &buffer_size
, 0, &b
, &d
, TRUE
)) < 0) {
1024 pa_log("Failed to set hardware parameters: %s", pa_alsa_strerror(err
));
1028 if (b
!= u
->use_mmap
|| d
!= u
->use_tsched
) {
1029 pa_log_warn("Resume failed, couldn't get original access mode.");
1033 if (!pa_sample_spec_equal(&ss
, &u
->sink
->sample_spec
)) {
1034 pa_log_warn("Resume failed, couldn't restore original sample settings.");
1038 if (period_size
*u
->frame_size
!= u
->fragment_size
||
1039 buffer_size
*u
->frame_size
!= u
->hwbuf_size
) {
1040 pa_log_warn("Resume failed, couldn't restore original fragment settings. (Old: %lu/%lu, New %lu/%lu)",
1041 (unsigned long) u
->hwbuf_size
, (unsigned long) u
->fragment_size
,
1042 (unsigned long) (buffer_size
*u
->frame_size
), (unsigned long) (period_size
*u
->frame_size
));
1046 if (update_sw_params(u
) < 0)
1049 if (build_pollfd(u
) < 0)
1053 pa_smoother_reset(u
->smoother
, pa_rtclock_now(), TRUE
);
1054 u
->smoother_interval
= SMOOTHER_MIN_INTERVAL
;
1055 u
->last_smoother_update
= 0;
1060 pa_log_info("Resumed successfully...");
1062 pa_xfree(device_name
);
1066 if (u
->pcm_handle
) {
1067 snd_pcm_close(u
->pcm_handle
);
1068 u
->pcm_handle
= NULL
;
1071 pa_xfree(device_name
);
1076 /* Called from IO context */
1077 static int sink_process_msg(pa_msgobject
*o
, int code
, void *data
, int64_t offset
, pa_memchunk
*chunk
) {
1078 struct userdata
*u
= PA_SINK(o
)->userdata
;
1082 case PA_SINK_MESSAGE_FINISH_MOVE
:
1083 case PA_SINK_MESSAGE_ADD_INPUT
: {
1084 pa_sink_input
*i
= PA_SINK_INPUT(data
);
1087 if (PA_LIKELY(!pa_sink_input_is_passthrough(i
)))
1090 u
->old_rate
= u
->sink
->sample_spec
.rate
;
1092 /* Passthrough format, see if we need to reset sink sample rate */
1093 if (u
->sink
->sample_spec
.rate
== i
->thread_info
.sample_spec
.rate
)
1097 if ((r
= suspend(u
)) < 0)
1100 u
->sink
->sample_spec
.rate
= i
->thread_info
.sample_spec
.rate
;
1102 if ((r
= unsuspend(u
)) < 0)
1108 case PA_SINK_MESSAGE_START_MOVE
:
1109 case PA_SINK_MESSAGE_REMOVE_INPUT
: {
1110 pa_sink_input
*i
= PA_SINK_INPUT(data
);
1113 if (PA_LIKELY(!pa_sink_input_is_passthrough(i
)))
1116 /* Passthrough format, see if we need to reset sink sample rate */
1117 if (u
->sink
->sample_spec
.rate
== u
->old_rate
)
1121 if (PA_SINK_IS_OPENED(u
->sink
->thread_info
.state
) && ((r
= suspend(u
)) < 0))
1124 u
->sink
->sample_spec
.rate
= u
->old_rate
;
1126 if (PA_SINK_IS_OPENED(u
->sink
->thread_info
.state
) && ((r
= unsuspend(u
)) < 0))
1132 case PA_SINK_MESSAGE_GET_LATENCY
: {
1136 r
= sink_get_latency(u
);
1138 *((pa_usec_t
*) data
) = r
;
1143 case PA_SINK_MESSAGE_SET_STATE
:
1145 switch ((pa_sink_state_t
) PA_PTR_TO_UINT(data
)) {
1147 case PA_SINK_SUSPENDED
: {
1150 pa_assert(PA_SINK_IS_OPENED(u
->sink
->thread_info
.state
));
1152 if ((r
= suspend(u
)) < 0)
1159 case PA_SINK_RUNNING
: {
1162 if (u
->sink
->thread_info
.state
== PA_SINK_INIT
) {
1163 if (build_pollfd(u
) < 0)
1167 if (u
->sink
->thread_info
.state
== PA_SINK_SUSPENDED
) {
1168 if ((r
= unsuspend(u
)) < 0)
1175 case PA_SINK_UNLINKED
:
1177 case PA_SINK_INVALID_STATE
:
1184 return pa_sink_process_msg(o
, code
, data
, offset
, chunk
);
1187 /* Called from main context */
1188 static int sink_set_state_cb(pa_sink
*s
, pa_sink_state_t new_state
) {
1189 pa_sink_state_t old_state
;
1192 pa_sink_assert_ref(s
);
1193 pa_assert_se(u
= s
->userdata
);
1195 old_state
= pa_sink_get_state(u
->sink
);
1197 if (PA_SINK_IS_OPENED(old_state
) && new_state
== PA_SINK_SUSPENDED
)
1199 else if (old_state
== PA_SINK_SUSPENDED
&& PA_SINK_IS_OPENED(new_state
))
1200 if (reserve_init(u
, u
->device_name
) < 0)
1201 return -PA_ERR_BUSY
;
1206 static int ctl_mixer_callback(snd_mixer_elem_t
*elem
, unsigned int mask
) {
1207 struct userdata
*u
= snd_mixer_elem_get_callback_private(elem
);
1210 pa_assert(u
->mixer_handle
);
1212 if (mask
== SND_CTL_EVENT_MASK_REMOVE
)
1215 if (u
->sink
->suspend_cause
& PA_SUSPEND_SESSION
)
1218 if (mask
& SND_CTL_EVENT_MASK_VALUE
) {
1219 pa_sink_get_volume(u
->sink
, TRUE
);
1220 pa_sink_get_mute(u
->sink
, TRUE
);
1226 static int io_mixer_callback(snd_mixer_elem_t
*elem
, unsigned int mask
) {
1227 struct userdata
*u
= snd_mixer_elem_get_callback_private(elem
);
1230 pa_assert(u
->mixer_handle
);
1232 if (mask
== SND_CTL_EVENT_MASK_REMOVE
)
1235 if (u
->sink
->suspend_cause
& PA_SUSPEND_SESSION
)
1238 if (mask
& SND_CTL_EVENT_MASK_VALUE
)
1239 pa_sink_update_volume_and_mute(u
->sink
);
1244 static void sink_get_volume_cb(pa_sink
*s
) {
1245 struct userdata
*u
= s
->userdata
;
1247 char vol_str_pcnt
[PA_CVOLUME_SNPRINT_MAX
];
1250 pa_assert(u
->mixer_path
);
1251 pa_assert(u
->mixer_handle
);
1253 if (pa_alsa_path_get_volume(u
->mixer_path
, u
->mixer_handle
, &s
->channel_map
, &r
) < 0)
1256 /* Shift down by the base volume, so that 0dB becomes maximum volume */
1257 pa_sw_cvolume_multiply_scalar(&r
, &r
, s
->base_volume
);
1259 pa_log_debug("Read hardware volume: %s", pa_cvolume_snprint(vol_str_pcnt
, sizeof(vol_str_pcnt
), &r
));
1261 if (u
->mixer_path
->has_dB
) {
1262 char vol_str_db
[PA_SW_CVOLUME_SNPRINT_DB_MAX
];
1264 pa_log_debug(" in dB: %s", pa_sw_cvolume_snprint_dB(vol_str_db
, sizeof(vol_str_db
), &r
));
1267 if (pa_cvolume_equal(&u
->hardware_volume
, &r
))
1270 s
->real_volume
= u
->hardware_volume
= r
;
1272 /* Hmm, so the hardware volume changed, let's reset our software volume */
1273 if (u
->mixer_path
->has_dB
)
1274 pa_sink_set_soft_volume(s
, NULL
);
1277 static void sink_set_volume_cb(pa_sink
*s
) {
1278 struct userdata
*u
= s
->userdata
;
1280 char vol_str_pcnt
[PA_CVOLUME_SNPRINT_MAX
];
1281 pa_bool_t deferred_volume
= !!(s
->flags
& PA_SINK_DEFERRED_VOLUME
);
1284 pa_assert(u
->mixer_path
);
1285 pa_assert(u
->mixer_handle
);
1287 /* Shift up by the base volume */
1288 pa_sw_cvolume_divide_scalar(&r
, &s
->real_volume
, s
->base_volume
);
1290 if (pa_alsa_path_set_volume(u
->mixer_path
, u
->mixer_handle
, &s
->channel_map
, &r
, deferred_volume
, !deferred_volume
) < 0)
1293 /* Shift down by the base volume, so that 0dB becomes maximum volume */
1294 pa_sw_cvolume_multiply_scalar(&r
, &r
, s
->base_volume
);
1296 u
->hardware_volume
= r
;
1298 if (u
->mixer_path
->has_dB
) {
1299 pa_cvolume new_soft_volume
;
1300 pa_bool_t accurate_enough
;
1301 char vol_str_db
[PA_SW_CVOLUME_SNPRINT_DB_MAX
];
1303 /* Match exactly what the user requested by software */
1304 pa_sw_cvolume_divide(&new_soft_volume
, &s
->real_volume
, &u
->hardware_volume
);
1306 /* If the adjustment to do in software is only minimal we
1307 * can skip it. That saves us CPU at the expense of a bit of
1310 (pa_cvolume_min(&new_soft_volume
) >= (PA_VOLUME_NORM
- VOLUME_ACCURACY
)) &&
1311 (pa_cvolume_max(&new_soft_volume
) <= (PA_VOLUME_NORM
+ VOLUME_ACCURACY
));
1313 pa_log_debug("Requested volume: %s", pa_cvolume_snprint(vol_str_pcnt
, sizeof(vol_str_pcnt
), &s
->real_volume
));
1314 pa_log_debug(" in dB: %s", pa_sw_cvolume_snprint_dB(vol_str_db
, sizeof(vol_str_db
), &s
->real_volume
));
1315 pa_log_debug("Got hardware volume: %s", pa_cvolume_snprint(vol_str_pcnt
, sizeof(vol_str_pcnt
), &u
->hardware_volume
));
1316 pa_log_debug(" in dB: %s", pa_sw_cvolume_snprint_dB(vol_str_db
, sizeof(vol_str_db
), &u
->hardware_volume
));
1317 pa_log_debug("Calculated software volume: %s (accurate-enough=%s)",
1318 pa_cvolume_snprint(vol_str_pcnt
, sizeof(vol_str_pcnt
), &new_soft_volume
),
1319 pa_yes_no(accurate_enough
));
1320 pa_log_debug(" in dB: %s", pa_sw_cvolume_snprint_dB(vol_str_db
, sizeof(vol_str_db
), &new_soft_volume
));
1322 if (!accurate_enough
)
1323 s
->soft_volume
= new_soft_volume
;
1326 pa_log_debug("Wrote hardware volume: %s", pa_cvolume_snprint(vol_str_pcnt
, sizeof(vol_str_pcnt
), &r
));
1328 /* We can't match exactly what the user requested, hence let's
1329 * at least tell the user about it */
1335 static void sink_write_volume_cb(pa_sink
*s
) {
1336 struct userdata
*u
= s
->userdata
;
1337 pa_cvolume hw_vol
= s
->thread_info
.current_hw_volume
;
1340 pa_assert(u
->mixer_path
);
1341 pa_assert(u
->mixer_handle
);
1342 pa_assert(s
->flags
& PA_SINK_DEFERRED_VOLUME
);
1344 /* Shift up by the base volume */
1345 pa_sw_cvolume_divide_scalar(&hw_vol
, &hw_vol
, s
->base_volume
);
1347 if (pa_alsa_path_set_volume(u
->mixer_path
, u
->mixer_handle
, &s
->channel_map
, &hw_vol
, TRUE
, TRUE
) < 0)
1348 pa_log_error("Writing HW volume failed");
1351 pa_bool_t accurate_enough
;
1353 /* Shift down by the base volume, so that 0dB becomes maximum volume */
1354 pa_sw_cvolume_multiply_scalar(&hw_vol
, &hw_vol
, s
->base_volume
);
1356 pa_sw_cvolume_divide(&tmp_vol
, &hw_vol
, &s
->thread_info
.current_hw_volume
);
1358 (pa_cvolume_min(&tmp_vol
) >= (PA_VOLUME_NORM
- VOLUME_ACCURACY
)) &&
1359 (pa_cvolume_max(&tmp_vol
) <= (PA_VOLUME_NORM
+ VOLUME_ACCURACY
));
1361 if (!accurate_enough
) {
1363 char db
[2][PA_SW_CVOLUME_SNPRINT_DB_MAX
];
1364 char pcnt
[2][PA_CVOLUME_SNPRINT_MAX
];
1367 pa_log_debug("Written HW volume did not match with the request: %s (request) != %s",
1368 pa_cvolume_snprint(vol
.pcnt
[0], sizeof(vol
.pcnt
[0]), &s
->thread_info
.current_hw_volume
),
1369 pa_cvolume_snprint(vol
.pcnt
[1], sizeof(vol
.pcnt
[1]), &hw_vol
));
1370 pa_log_debug(" in dB: %s (request) != %s",
1371 pa_sw_cvolume_snprint_dB(vol
.db
[0], sizeof(vol
.db
[0]), &s
->thread_info
.current_hw_volume
),
1372 pa_sw_cvolume_snprint_dB(vol
.db
[1], sizeof(vol
.db
[1]), &hw_vol
));
1377 static void sink_get_mute_cb(pa_sink
*s
) {
1378 struct userdata
*u
= s
->userdata
;
1382 pa_assert(u
->mixer_path
);
1383 pa_assert(u
->mixer_handle
);
1385 if (pa_alsa_path_get_mute(u
->mixer_path
, u
->mixer_handle
, &b
) < 0)
1391 static void sink_set_mute_cb(pa_sink
*s
) {
1392 struct userdata
*u
= s
->userdata
;
1395 pa_assert(u
->mixer_path
);
1396 pa_assert(u
->mixer_handle
);
1398 pa_alsa_path_set_mute(u
->mixer_path
, u
->mixer_handle
, s
->muted
);
1401 static void mixer_volume_init(struct userdata
*u
) {
1404 if (!u
->mixer_path
->has_volume
) {
1405 pa_sink_set_write_volume_callback(u
->sink
, NULL
);
1406 pa_sink_set_get_volume_callback(u
->sink
, NULL
);
1407 pa_sink_set_set_volume_callback(u
->sink
, NULL
);
1409 pa_log_info("Driver does not support hardware volume control, falling back to software volume control.");
1411 pa_sink_set_get_volume_callback(u
->sink
, sink_get_volume_cb
);
1412 pa_sink_set_set_volume_callback(u
->sink
, sink_set_volume_cb
);
1414 if (u
->mixer_path
->has_dB
&& u
->deferred_volume
) {
1415 pa_sink_set_write_volume_callback(u
->sink
, sink_write_volume_cb
);
1416 pa_log_info("Successfully enabled synchronous volume.");
1418 pa_sink_set_write_volume_callback(u
->sink
, NULL
);
1420 if (u
->mixer_path
->has_dB
) {
1421 pa_sink_enable_decibel_volume(u
->sink
, TRUE
);
1422 pa_log_info("Hardware volume ranges from %0.2f dB to %0.2f dB.", u
->mixer_path
->min_dB
, u
->mixer_path
->max_dB
);
1424 u
->sink
->base_volume
= pa_sw_volume_from_dB(-u
->mixer_path
->max_dB
);
1425 u
->sink
->n_volume_steps
= PA_VOLUME_NORM
+1;
1427 pa_log_info("Fixing base volume to %0.2f dB", pa_sw_volume_to_dB(u
->sink
->base_volume
));
1429 pa_sink_enable_decibel_volume(u
->sink
, FALSE
);
1430 pa_log_info("Hardware volume ranges from %li to %li.", u
->mixer_path
->min_volume
, u
->mixer_path
->max_volume
);
1432 u
->sink
->base_volume
= PA_VOLUME_NORM
;
1433 u
->sink
->n_volume_steps
= u
->mixer_path
->max_volume
- u
->mixer_path
->min_volume
+ 1;
1436 pa_log_info("Using hardware volume control. Hardware dB scale %s.", u
->mixer_path
->has_dB
? "supported" : "not supported");
1439 if (!u
->mixer_path
->has_mute
) {
1440 pa_sink_set_get_mute_callback(u
->sink
, NULL
);
1441 pa_sink_set_set_mute_callback(u
->sink
, NULL
);
1442 pa_log_info("Driver does not support hardware mute control, falling back to software mute control.");
1444 pa_sink_set_get_mute_callback(u
->sink
, sink_get_mute_cb
);
1445 pa_sink_set_set_mute_callback(u
->sink
, sink_set_mute_cb
);
1446 pa_log_info("Using hardware mute control.");
1450 static int sink_set_port_cb(pa_sink
*s
, pa_device_port
*p
) {
1451 struct userdata
*u
= s
->userdata
;
1452 pa_alsa_port_data
*data
;
1456 pa_assert(u
->mixer_handle
);
1458 data
= PA_DEVICE_PORT_DATA(p
);
1460 pa_assert_se(u
->mixer_path
= data
->path
);
1461 pa_alsa_path_select(u
->mixer_path
, u
->mixer_handle
);
1463 mixer_volume_init(u
);
1466 pa_alsa_setting_select(data
->setting
, u
->mixer_handle
);
1476 static void sink_update_requested_latency_cb(pa_sink
*s
) {
1477 struct userdata
*u
= s
->userdata
;
1480 pa_assert(u
->use_tsched
); /* only when timer scheduling is used
1481 * we can dynamically adjust the
1487 before
= u
->hwbuf_unused
;
1488 update_sw_params(u
);
1490 /* Let's check whether we now use only a smaller part of the
1491 buffer then before. If so, we need to make sure that subsequent
1492 rewinds are relative to the new maximum fill level and not to the
1493 current fill level. Thus, let's do a full rewind once, to clear
1496 if (u
->hwbuf_unused
> before
) {
1497 pa_log_debug("Requesting rewind due to latency change.");
1498 pa_sink_request_rewind(s
, (size_t) -1);
1502 static pa_idxset
* sink_get_formats(pa_sink
*s
) {
1503 struct userdata
*u
= s
->userdata
;
1504 pa_idxset
*ret
= pa_idxset_new(NULL
, NULL
);
1510 PA_IDXSET_FOREACH(f
, u
->formats
, idx
) {
1511 pa_idxset_put(ret
, pa_format_info_copy(f
), NULL
);
1517 static pa_bool_t
sink_set_formats(pa_sink
*s
, pa_idxset
*formats
) {
1518 struct userdata
*u
= s
->userdata
;
1524 /* FIXME: also validate sample rates against what the device supports */
1525 PA_IDXSET_FOREACH(f
, formats
, idx
) {
1526 if (is_iec958(u
) && f
->encoding
== PA_ENCODING_EAC3_IEC61937
)
1527 /* EAC3 cannot be sent over over S/PDIF */
1531 pa_idxset_free(u
->formats
, (pa_free2_cb_t
) pa_format_info_free2
, NULL
);
1532 u
->formats
= pa_idxset_new(NULL
, NULL
);
1534 PA_IDXSET_FOREACH(f
, formats
, idx
) {
1535 pa_idxset_put(u
->formats
, pa_format_info_copy(f
), NULL
);
1541 static int process_rewind(struct userdata
*u
) {
1542 snd_pcm_sframes_t unused
;
1543 size_t rewind_nbytes
, unused_nbytes
, limit_nbytes
;
1546 /* Figure out how much we shall rewind and reset the counter */
1547 rewind_nbytes
= u
->sink
->thread_info
.rewind_nbytes
;
1549 pa_log_debug("Requested to rewind %lu bytes.", (unsigned long) rewind_nbytes
);
1551 if (PA_UNLIKELY((unused
= pa_alsa_safe_avail(u
->pcm_handle
, u
->hwbuf_size
, &u
->sink
->sample_spec
)) < 0)) {
1552 pa_log("snd_pcm_avail() failed: %s", pa_alsa_strerror((int) unused
));
1556 unused_nbytes
= (size_t) unused
* u
->frame_size
;
1558 /* make sure rewind doesn't go too far, can cause issues with DMAs */
1559 unused_nbytes
+= u
->rewind_safeguard
;
1561 if (u
->hwbuf_size
> unused_nbytes
)
1562 limit_nbytes
= u
->hwbuf_size
- unused_nbytes
;
1566 if (rewind_nbytes
> limit_nbytes
)
1567 rewind_nbytes
= limit_nbytes
;
1569 if (rewind_nbytes
> 0) {
1570 snd_pcm_sframes_t in_frames
, out_frames
;
1572 pa_log_debug("Limited to %lu bytes.", (unsigned long) rewind_nbytes
);
1574 in_frames
= (snd_pcm_sframes_t
) (rewind_nbytes
/ u
->frame_size
);
1575 pa_log_debug("before: %lu", (unsigned long) in_frames
);
1576 if ((out_frames
= snd_pcm_rewind(u
->pcm_handle
, (snd_pcm_uframes_t
) in_frames
)) < 0) {
1577 pa_log("snd_pcm_rewind() failed: %s", pa_alsa_strerror((int) out_frames
));
1578 if (try_recover(u
, "process_rewind", out_frames
) < 0)
1583 pa_log_debug("after: %lu", (unsigned long) out_frames
);
1585 rewind_nbytes
= (size_t) out_frames
* u
->frame_size
;
1587 if (rewind_nbytes
<= 0)
1588 pa_log_info("Tried rewind, but was apparently not possible.");
1590 u
->write_count
-= rewind_nbytes
;
1591 pa_log_debug("Rewound %lu bytes.", (unsigned long) rewind_nbytes
);
1592 pa_sink_process_rewind(u
->sink
, rewind_nbytes
);
1594 u
->after_rewind
= TRUE
;
1598 pa_log_debug("Mhmm, actually there is nothing to rewind.");
1600 pa_sink_process_rewind(u
->sink
, 0);
1604 static void thread_func(void *userdata
) {
1605 struct userdata
*u
= userdata
;
1606 unsigned short revents
= 0;
1610 pa_log_debug("Thread starting up");
1612 if (u
->core
->realtime_scheduling
)
1613 pa_make_realtime(u
->core
->realtime_priority
);
1615 pa_thread_mq_install(&u
->thread_mq
);
1619 pa_usec_t rtpoll_sleep
= 0;
1622 pa_log_debug("Loop");
1625 /* Render some data and write it to the dsp */
1626 if (PA_SINK_IS_OPENED(u
->sink
->thread_info
.state
)) {
1628 pa_usec_t sleep_usec
= 0;
1629 pa_bool_t on_timeout
= pa_rtpoll_timer_elapsed(u
->rtpoll
);
1631 if (PA_UNLIKELY(u
->sink
->thread_info
.rewind_requested
))
1632 if (process_rewind(u
) < 0)
1636 work_done
= mmap_write(u
, &sleep_usec
, revents
& POLLOUT
, on_timeout
);
1638 work_done
= unix_write(u
, &sleep_usec
, revents
& POLLOUT
, on_timeout
);
1643 /* pa_log_debug("work_done = %i", work_done); */
1648 pa_log_info("Starting playback.");
1649 snd_pcm_start(u
->pcm_handle
);
1651 pa_smoother_resume(u
->smoother
, pa_rtclock_now(), TRUE
);
1659 if (u
->use_tsched
) {
1662 if (u
->since_start
<= u
->hwbuf_size
) {
1664 /* USB devices on ALSA seem to hit a buffer
1665 * underrun during the first iterations much
1666 * quicker then we calculate here, probably due to
1667 * the transport latency. To accommodate for that
1668 * we artificially decrease the sleep time until
1669 * we have filled the buffer at least once
1672 if (pa_log_ratelimit(PA_LOG_DEBUG
))
1673 pa_log_debug("Cutting sleep time for the initial iterations by half.");
1677 /* OK, the playback buffer is now full, let's
1678 * calculate when to wake up next */
1679 /* pa_log_debug("Waking up in %0.2fms (sound card clock).", (double) sleep_usec / PA_USEC_PER_MSEC); */
1681 /* Convert from the sound card time domain to the
1682 * system time domain */
1683 cusec
= pa_smoother_translate(u
->smoother
, pa_rtclock_now(), sleep_usec
);
1685 /* pa_log_debug("Waking up in %0.2fms (system clock).", (double) cusec / PA_USEC_PER_MSEC); */
1687 /* We don't trust the conversion, so we wake up whatever comes first */
1688 rtpoll_sleep
= PA_MIN(sleep_usec
, cusec
);
1691 u
->after_rewind
= FALSE
;
1695 if (u
->sink
->flags
& PA_SINK_DEFERRED_VOLUME
) {
1696 pa_usec_t volume_sleep
;
1697 pa_sink_volume_change_apply(u
->sink
, &volume_sleep
);
1698 if (volume_sleep
> 0)
1699 rtpoll_sleep
= PA_MIN(volume_sleep
, rtpoll_sleep
);
1702 if (rtpoll_sleep
> 0)
1703 pa_rtpoll_set_timer_relative(u
->rtpoll
, rtpoll_sleep
);
1705 pa_rtpoll_set_timer_disabled(u
->rtpoll
);
1707 /* Hmm, nothing to do. Let's sleep */
1708 if ((ret
= pa_rtpoll_run(u
->rtpoll
, TRUE
)) < 0)
1711 if (u
->sink
->flags
& PA_SINK_DEFERRED_VOLUME
)
1712 pa_sink_volume_change_apply(u
->sink
, NULL
);
1717 /* Tell ALSA about this and process its response */
1718 if (PA_SINK_IS_OPENED(u
->sink
->thread_info
.state
)) {
1719 struct pollfd
*pollfd
;
1723 pollfd
= pa_rtpoll_item_get_pollfd(u
->alsa_rtpoll_item
, &n
);
1725 if ((err
= snd_pcm_poll_descriptors_revents(u
->pcm_handle
, pollfd
, n
, &revents
)) < 0) {
1726 pa_log("snd_pcm_poll_descriptors_revents() failed: %s", pa_alsa_strerror(err
));
1730 if (revents
& ~POLLOUT
) {
1731 if (pa_alsa_recover_from_poll(u
->pcm_handle
, revents
) < 0)
1737 } else if (revents
&& u
->use_tsched
&& pa_log_ratelimit(PA_LOG_DEBUG
))
1738 pa_log_debug("Wakeup from ALSA!");
1745 /* If this was no regular exit from the loop we have to continue
1746 * processing messages until we received PA_MESSAGE_SHUTDOWN */
1747 pa_asyncmsgq_post(u
->thread_mq
.outq
, PA_MSGOBJECT(u
->core
), PA_CORE_MESSAGE_UNLOAD_MODULE
, u
->module
, 0, NULL
, NULL
);
1748 pa_asyncmsgq_wait_for(u
->thread_mq
.inq
, PA_MESSAGE_SHUTDOWN
);
1751 pa_log_debug("Thread shutting down");
1754 static void set_sink_name(pa_sink_new_data
*data
, pa_modargs
*ma
, const char *device_id
, const char *device_name
, pa_alsa_mapping
*mapping
) {
1760 pa_assert(device_name
);
1762 if ((n
= pa_modargs_get_value(ma
, "sink_name", NULL
))) {
1763 pa_sink_new_data_set_name(data
, n
);
1764 data
->namereg_fail
= TRUE
;
1768 if ((n
= pa_modargs_get_value(ma
, "name", NULL
)))
1769 data
->namereg_fail
= TRUE
;
1771 n
= device_id
? device_id
: device_name
;
1772 data
->namereg_fail
= FALSE
;
1776 t
= pa_sprintf_malloc("alsa_output.%s.%s", n
, mapping
->name
);
1778 t
= pa_sprintf_malloc("alsa_output.%s", n
);
1780 pa_sink_new_data_set_name(data
, t
);
1784 static void find_mixer(struct userdata
*u
, pa_alsa_mapping
*mapping
, const char *element
, pa_bool_t ignore_dB
) {
1786 if (!mapping
&& !element
)
1789 if (!(u
->mixer_handle
= pa_alsa_open_mixer_for_pcm(u
->pcm_handle
, &u
->control_device
))) {
1790 pa_log_info("Failed to find a working mixer device.");
1796 if (!(u
->mixer_path
= pa_alsa_path_synthesize(element
, PA_ALSA_DIRECTION_OUTPUT
)))
1799 if (pa_alsa_path_probe(u
->mixer_path
, u
->mixer_handle
, ignore_dB
) < 0)
1802 pa_log_debug("Probed mixer path %s:", u
->mixer_path
->name
);
1803 pa_alsa_path_dump(u
->mixer_path
);
1806 if (!(u
->mixer_path_set
= pa_alsa_path_set_new(mapping
, PA_ALSA_DIRECTION_OUTPUT
)))
1809 pa_alsa_path_set_probe(u
->mixer_path_set
, u
->mixer_handle
, ignore_dB
);
1816 if (u
->mixer_path_set
) {
1817 pa_alsa_path_set_free(u
->mixer_path_set
);
1818 u
->mixer_path_set
= NULL
;
1819 } else if (u
->mixer_path
) {
1820 pa_alsa_path_free(u
->mixer_path
);
1821 u
->mixer_path
= NULL
;
1824 if (u
->mixer_handle
) {
1825 snd_mixer_close(u
->mixer_handle
);
1826 u
->mixer_handle
= NULL
;
1831 static int setup_mixer(struct userdata
*u
, pa_bool_t ignore_dB
) {
1832 pa_bool_t need_mixer_callback
= FALSE
;
1836 if (!u
->mixer_handle
)
1839 if (u
->sink
->active_port
) {
1840 pa_alsa_port_data
*data
;
1842 /* We have a list of supported paths, so let's activate the
1843 * one that has been chosen as active */
1845 data
= PA_DEVICE_PORT_DATA(u
->sink
->active_port
);
1846 u
->mixer_path
= data
->path
;
1848 pa_alsa_path_select(data
->path
, u
->mixer_handle
);
1851 pa_alsa_setting_select(data
->setting
, u
->mixer_handle
);
1855 if (!u
->mixer_path
&& u
->mixer_path_set
)
1856 u
->mixer_path
= u
->mixer_path_set
->paths
;
1858 if (u
->mixer_path
) {
1859 /* Hmm, we have only a single path, then let's activate it */
1861 pa_alsa_path_select(u
->mixer_path
, u
->mixer_handle
);
1863 if (u
->mixer_path
->settings
)
1864 pa_alsa_setting_select(u
->mixer_path
->settings
, u
->mixer_handle
);
1869 mixer_volume_init(u
);
1871 /* Will we need to register callbacks? */
1872 if (u
->mixer_path_set
&& u
->mixer_path_set
->paths
) {
1875 PA_LLIST_FOREACH(p
, u
->mixer_path_set
->paths
) {
1876 if (p
->has_volume
|| p
->has_mute
)
1877 need_mixer_callback
= TRUE
;
1880 else if (u
->mixer_path
)
1881 need_mixer_callback
= u
->mixer_path
->has_volume
|| u
->mixer_path
->has_mute
;
1883 if (need_mixer_callback
) {
1884 int (*mixer_callback
)(snd_mixer_elem_t
*, unsigned int);
1885 if (u
->sink
->flags
& PA_SINK_DEFERRED_VOLUME
) {
1886 u
->mixer_pd
= pa_alsa_mixer_pdata_new();
1887 mixer_callback
= io_mixer_callback
;
1889 if (pa_alsa_set_mixer_rtpoll(u
->mixer_pd
, u
->mixer_handle
, u
->rtpoll
) < 0) {
1890 pa_log("Failed to initialize file descriptor monitoring");
1894 u
->mixer_fdl
= pa_alsa_fdlist_new();
1895 mixer_callback
= ctl_mixer_callback
;
1897 if (pa_alsa_fdlist_set_mixer(u
->mixer_fdl
, u
->mixer_handle
, u
->core
->mainloop
) < 0) {
1898 pa_log("Failed to initialize file descriptor monitoring");
1903 if (u
->mixer_path_set
)
1904 pa_alsa_path_set_set_callback(u
->mixer_path_set
, u
->mixer_handle
, mixer_callback
, u
);
1906 pa_alsa_path_set_callback(u
->mixer_path
, u
->mixer_handle
, mixer_callback
, u
);
1912 pa_sink
*pa_alsa_sink_new(pa_module
*m
, pa_modargs
*ma
, const char*driver
, pa_card
*card
, pa_alsa_mapping
*mapping
) {
1914 struct userdata
*u
= NULL
;
1915 const char *dev_id
= NULL
;
1916 pa_sample_spec ss
, requested_ss
;
1918 uint32_t nfrags
, frag_size
, buffer_size
, tsched_size
, tsched_watermark
, rewind_safeguard
;
1919 snd_pcm_uframes_t period_frames
, buffer_frames
, tsched_frames
;
1921 pa_bool_t use_mmap
= TRUE
, b
, use_tsched
= TRUE
, d
, ignore_dB
= FALSE
, namereg_fail
= FALSE
, deferred_volume
= FALSE
, set_formats
= FALSE
;
1922 pa_sink_new_data data
;
1923 pa_alsa_profile_set
*profile_set
= NULL
;
1928 ss
= m
->core
->default_sample_spec
;
1929 map
= m
->core
->default_channel_map
;
1930 if (pa_modargs_get_sample_spec_and_channel_map(ma
, &ss
, &map
, PA_CHANNEL_MAP_ALSA
) < 0) {
1931 pa_log("Failed to parse sample specification and channel map");
1936 frame_size
= pa_frame_size(&ss
);
1938 nfrags
= m
->core
->default_n_fragments
;
1939 frag_size
= (uint32_t) pa_usec_to_bytes(m
->core
->default_fragment_size_msec
*PA_USEC_PER_MSEC
, &ss
);
1941 frag_size
= (uint32_t) frame_size
;
1942 tsched_size
= (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_BUFFER_USEC
, &ss
);
1943 tsched_watermark
= (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_WATERMARK_USEC
, &ss
);
1945 if (pa_modargs_get_value_u32(ma
, "fragments", &nfrags
) < 0 ||
1946 pa_modargs_get_value_u32(ma
, "fragment_size", &frag_size
) < 0 ||
1947 pa_modargs_get_value_u32(ma
, "tsched_buffer_size", &tsched_size
) < 0 ||
1948 pa_modargs_get_value_u32(ma
, "tsched_buffer_watermark", &tsched_watermark
) < 0) {
1949 pa_log("Failed to parse buffer metrics");
1953 buffer_size
= nfrags
* frag_size
;
1955 period_frames
= frag_size
/frame_size
;
1956 buffer_frames
= buffer_size
/frame_size
;
1957 tsched_frames
= tsched_size
/frame_size
;
1959 if (pa_modargs_get_value_boolean(ma
, "mmap", &use_mmap
) < 0) {
1960 pa_log("Failed to parse mmap argument.");
1964 if (pa_modargs_get_value_boolean(ma
, "tsched", &use_tsched
) < 0) {
1965 pa_log("Failed to parse tsched argument.");
1969 if (pa_modargs_get_value_boolean(ma
, "ignore_dB", &ignore_dB
) < 0) {
1970 pa_log("Failed to parse ignore_dB argument.");
1974 rewind_safeguard
= PA_MAX(DEFAULT_REWIND_SAFEGUARD_BYTES
, pa_usec_to_bytes(DEFAULT_REWIND_SAFEGUARD_USEC
, &ss
));
1975 if (pa_modargs_get_value_u32(ma
, "rewind_safeguard", &rewind_safeguard
) < 0) {
1976 pa_log("Failed to parse rewind_safeguard argument");
1980 deferred_volume
= m
->core
->deferred_volume
;
1981 if (pa_modargs_get_value_boolean(ma
, "deferred_volume", &deferred_volume
) < 0) {
1982 pa_log("Failed to parse deferred_volume argument.");
1986 use_tsched
= pa_alsa_may_tsched(use_tsched
);
1988 u
= pa_xnew0(struct userdata
, 1);
1991 u
->use_mmap
= use_mmap
;
1992 u
->use_tsched
= use_tsched
;
1993 u
->deferred_volume
= deferred_volume
;
1995 u
->rewind_safeguard
= rewind_safeguard
;
1996 u
->rtpoll
= pa_rtpoll_new();
1997 pa_thread_mq_init(&u
->thread_mq
, m
->core
->mainloop
, u
->rtpoll
);
1999 u
->smoother
= pa_smoother_new(
2000 SMOOTHER_ADJUST_USEC
,
2001 SMOOTHER_WINDOW_USEC
,
2007 u
->smoother_interval
= SMOOTHER_MIN_INTERVAL
;
2009 dev_id
= pa_modargs_get_value(
2011 pa_modargs_get_value(ma
, "device", DEFAULT_DEVICE
));
2013 if (reserve_init(u
, dev_id
) < 0)
2016 if (reserve_monitor_init(u
, dev_id
) < 0)
2024 if (!(dev_id
= pa_modargs_get_value(ma
, "device_id", NULL
))) {
2025 pa_log("device_id= not set");
2029 if (!(u
->pcm_handle
= pa_alsa_open_by_device_id_mapping(
2033 SND_PCM_STREAM_PLAYBACK
,
2034 &period_frames
, &buffer_frames
, tsched_frames
,
2038 } else if ((dev_id
= pa_modargs_get_value(ma
, "device_id", NULL
))) {
2040 if (!(profile_set
= pa_alsa_profile_set_new(NULL
, &map
)))
2043 if (!(u
->pcm_handle
= pa_alsa_open_by_device_id_auto(
2047 SND_PCM_STREAM_PLAYBACK
,
2048 &period_frames
, &buffer_frames
, tsched_frames
,
2049 &b
, &d
, profile_set
, &mapping
)))
2054 if (!(u
->pcm_handle
= pa_alsa_open_by_device_string(
2055 pa_modargs_get_value(ma
, "device", DEFAULT_DEVICE
),
2058 SND_PCM_STREAM_PLAYBACK
,
2059 &period_frames
, &buffer_frames
, tsched_frames
,
2064 pa_assert(u
->device_name
);
2065 pa_log_info("Successfully opened device %s.", u
->device_name
);
2067 if (pa_alsa_pcm_is_modem(u
->pcm_handle
)) {
2068 pa_log_notice("Device %s is modem, refusing further initialization.", u
->device_name
);
2073 pa_log_info("Selected mapping '%s' (%s).", mapping
->description
, mapping
->name
);
2075 if (use_mmap
&& !b
) {
2076 pa_log_info("Device doesn't support mmap(), falling back to UNIX read/write mode.");
2077 u
->use_mmap
= use_mmap
= FALSE
;
2080 if (use_tsched
&& (!b
|| !d
)) {
2081 pa_log_info("Cannot enable timer-based scheduling, falling back to sound IRQ scheduling.");
2082 u
->use_tsched
= use_tsched
= FALSE
;
2086 pa_log_info("Successfully enabled mmap() mode.");
2089 pa_log_info("Successfully enabled timer-based scheduling mode.");
2091 if (is_iec958(u
) || is_hdmi(u
))
2094 /* ALSA might tweak the sample spec, so recalculate the frame size */
2095 frame_size
= pa_frame_size(&ss
);
2097 find_mixer(u
, mapping
, pa_modargs_get_value(ma
, "control", NULL
), ignore_dB
);
2099 pa_sink_new_data_init(&data
);
2100 data
.driver
= driver
;
2103 set_sink_name(&data
, ma
, dev_id
, u
->device_name
, mapping
);
2105 /* We need to give pa_modargs_get_value_boolean() a pointer to a local
2106 * variable instead of using &data.namereg_fail directly, because
2107 * data.namereg_fail is a bitfield and taking the address of a bitfield
2108 * variable is impossible. */
2109 namereg_fail
= data
.namereg_fail
;
2110 if (pa_modargs_get_value_boolean(ma
, "namereg_fail", &namereg_fail
) < 0) {
2111 pa_log("Failed to parse namereg_fail argument.");
2112 pa_sink_new_data_done(&data
);
2115 data
.namereg_fail
= namereg_fail
;
2117 pa_sink_new_data_set_sample_spec(&data
, &ss
);
2118 pa_sink_new_data_set_channel_map(&data
, &map
);
2120 pa_alsa_init_proplist_pcm(m
->core
, data
.proplist
, u
->pcm_handle
);
2121 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_STRING
, u
->device_name
);
2122 pa_proplist_setf(data
.proplist
, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE
, "%lu", (unsigned long) (buffer_frames
* frame_size
));
2123 pa_proplist_setf(data
.proplist
, PA_PROP_DEVICE_BUFFERING_FRAGMENT_SIZE
, "%lu", (unsigned long) (period_frames
* frame_size
));
2124 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_ACCESS_MODE
, u
->use_tsched
? "mmap+timer" : (u
->use_mmap
? "mmap" : "serial"));
2127 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_PROFILE_NAME
, mapping
->name
);
2128 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_PROFILE_DESCRIPTION
, mapping
->description
);
2131 pa_alsa_init_description(data
.proplist
);
2133 if (u
->control_device
)
2134 pa_alsa_init_proplist_ctl(data
.proplist
, u
->control_device
);
2136 if (pa_modargs_get_proplist(ma
, "sink_properties", data
.proplist
, PA_UPDATE_REPLACE
) < 0) {
2137 pa_log("Invalid properties");
2138 pa_sink_new_data_done(&data
);
2142 if (u
->mixer_path_set
)
2143 pa_alsa_add_ports(&data
.ports
, u
->mixer_path_set
);
2145 u
->sink
= pa_sink_new(m
->core
, &data
, PA_SINK_HARDWARE
| PA_SINK_LATENCY
| (u
->use_tsched
? PA_SINK_DYNAMIC_LATENCY
: 0) |
2146 (set_formats
? PA_SINK_SET_FORMATS
: 0));
2147 pa_sink_new_data_done(&data
);
2150 pa_log("Failed to create sink object");
2154 if (pa_modargs_get_value_u32(ma
, "deferred_volume_safety_margin",
2155 &u
->sink
->thread_info
.volume_change_safety_margin
) < 0) {
2156 pa_log("Failed to parse deferred_volume_safety_margin parameter");
2160 if (pa_modargs_get_value_s32(ma
, "deferred_volume_extra_delay",
2161 &u
->sink
->thread_info
.volume_change_extra_delay
) < 0) {
2162 pa_log("Failed to parse deferred_volume_extra_delay parameter");
2166 u
->sink
->parent
.process_msg
= sink_process_msg
;
2168 u
->sink
->update_requested_latency
= sink_update_requested_latency_cb
;
2169 u
->sink
->set_state
= sink_set_state_cb
;
2170 u
->sink
->set_port
= sink_set_port_cb
;
2171 u
->sink
->userdata
= u
;
2173 pa_sink_set_asyncmsgq(u
->sink
, u
->thread_mq
.inq
);
2174 pa_sink_set_rtpoll(u
->sink
, u
->rtpoll
);
2176 u
->frame_size
= frame_size
;
2177 u
->fragment_size
= frag_size
= (size_t) (period_frames
* frame_size
);
2178 u
->hwbuf_size
= buffer_size
= (size_t) (buffer_frames
* frame_size
);
2179 pa_cvolume_mute(&u
->hardware_volume
, u
->sink
->sample_spec
.channels
);
2181 pa_log_info("Using %0.1f fragments of size %lu bytes (%0.2fms), buffer size is %lu bytes (%0.2fms)",
2182 (double) u
->hwbuf_size
/ (double) u
->fragment_size
,
2183 (long unsigned) u
->fragment_size
,
2184 (double) pa_bytes_to_usec(u
->fragment_size
, &ss
) / PA_USEC_PER_MSEC
,
2185 (long unsigned) u
->hwbuf_size
,
2186 (double) pa_bytes_to_usec(u
->hwbuf_size
, &ss
) / PA_USEC_PER_MSEC
);
2188 pa_sink_set_max_request(u
->sink
, u
->hwbuf_size
);
2189 if (pa_alsa_pcm_is_hw(u
->pcm_handle
))
2190 pa_sink_set_max_rewind(u
->sink
, u
->hwbuf_size
);
2192 pa_log_info("Disabling rewind for device %s", u
->device_name
);
2193 pa_sink_set_max_rewind(u
->sink
, 0);
2196 if (u
->use_tsched
) {
2197 u
->tsched_watermark
= pa_usec_to_bytes_round_up(pa_bytes_to_usec_round_up(tsched_watermark
, &requested_ss
), &u
->sink
->sample_spec
);
2199 u
->watermark_inc_step
= pa_usec_to_bytes(TSCHED_WATERMARK_INC_STEP_USEC
, &u
->sink
->sample_spec
);
2200 u
->watermark_dec_step
= pa_usec_to_bytes(TSCHED_WATERMARK_DEC_STEP_USEC
, &u
->sink
->sample_spec
);
2202 u
->watermark_inc_threshold
= pa_usec_to_bytes_round_up(TSCHED_WATERMARK_INC_THRESHOLD_USEC
, &u
->sink
->sample_spec
);
2203 u
->watermark_dec_threshold
= pa_usec_to_bytes_round_up(TSCHED_WATERMARK_DEC_THRESHOLD_USEC
, &u
->sink
->sample_spec
);
2205 fix_min_sleep_wakeup(u
);
2206 fix_tsched_watermark(u
);
2208 pa_sink_set_latency_range(u
->sink
,
2210 pa_bytes_to_usec(u
->hwbuf_size
, &ss
));
2212 pa_log_info("Time scheduling watermark is %0.2fms",
2213 (double) pa_bytes_to_usec(u
->tsched_watermark
, &ss
) / PA_USEC_PER_MSEC
);
2215 pa_sink_set_fixed_latency(u
->sink
, pa_bytes_to_usec(u
->hwbuf_size
, &ss
));
2219 if (update_sw_params(u
) < 0)
2222 if (setup_mixer(u
, ignore_dB
) < 0)
2225 pa_alsa_dump(PA_LOG_DEBUG
, u
->pcm_handle
);
2227 if (!(u
->thread
= pa_thread_new("alsa-sink", thread_func
, u
))) {
2228 pa_log("Failed to create thread.");
2232 /* Get initial mixer settings */
2233 if (data
.volume_is_set
) {
2234 if (u
->sink
->set_volume
)
2235 u
->sink
->set_volume(u
->sink
);
2237 if (u
->sink
->get_volume
)
2238 u
->sink
->get_volume(u
->sink
);
2241 if (data
.muted_is_set
) {
2242 if (u
->sink
->set_mute
)
2243 u
->sink
->set_mute(u
->sink
);
2245 if (u
->sink
->get_mute
)
2246 u
->sink
->get_mute(u
->sink
);
2249 if ((data
.volume_is_set
|| data
.muted_is_set
) && u
->sink
->write_volume
)
2250 u
->sink
->write_volume(u
->sink
);
2253 /* For S/PDIF and HDMI, allow getting/setting custom formats */
2254 pa_format_info
*format
;
2256 /* To start with, we only support PCM formats. Other formats may be added
2257 * with pa_sink_set_formats().*/
2258 format
= pa_format_info_new();
2259 format
->encoding
= PA_ENCODING_PCM
;
2260 u
->formats
= pa_idxset_new(NULL
, NULL
);
2261 pa_idxset_put(u
->formats
, format
, NULL
);
2263 u
->sink
->get_formats
= sink_get_formats
;
2264 u
->sink
->set_formats
= sink_set_formats
;
2267 pa_sink_put(u
->sink
);
2270 pa_alsa_profile_set_free(profile_set
);
2280 pa_alsa_profile_set_free(profile_set
);
2285 static void userdata_free(struct userdata
*u
) {
2289 pa_sink_unlink(u
->sink
);
2292 pa_asyncmsgq_send(u
->thread_mq
.inq
, NULL
, PA_MESSAGE_SHUTDOWN
, NULL
, 0, NULL
);
2293 pa_thread_free(u
->thread
);
2296 pa_thread_mq_done(&u
->thread_mq
);
2299 pa_sink_unref(u
->sink
);
2301 if (u
->memchunk
.memblock
)
2302 pa_memblock_unref(u
->memchunk
.memblock
);
2305 pa_alsa_mixer_pdata_free(u
->mixer_pd
);
2307 if (u
->alsa_rtpoll_item
)
2308 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
2311 pa_rtpoll_free(u
->rtpoll
);
2313 if (u
->pcm_handle
) {
2314 snd_pcm_drop(u
->pcm_handle
);
2315 snd_pcm_close(u
->pcm_handle
);
2319 pa_alsa_fdlist_free(u
->mixer_fdl
);
2321 if (u
->mixer_path_set
)
2322 pa_alsa_path_set_free(u
->mixer_path_set
);
2323 else if (u
->mixer_path
)
2324 pa_alsa_path_free(u
->mixer_path
);
2326 if (u
->mixer_handle
)
2327 snd_mixer_close(u
->mixer_handle
);
2330 pa_smoother_free(u
->smoother
);
2333 pa_idxset_free(u
->formats
, (pa_free2_cb_t
) pa_format_info_free2
, NULL
);
2338 pa_xfree(u
->device_name
);
2339 pa_xfree(u
->control_device
);
2343 void pa_alsa_sink_free(pa_sink
*s
) {
2346 pa_sink_assert_ref(s
);
2347 pa_assert_se(u
= s
->userdata
);