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 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/xmalloc.h>
36 #include <pulse/util.h>
37 #include <pulse/timeval.h>
39 #include <pulsecore/core.h>
40 #include <pulsecore/module.h>
41 #include <pulsecore/memchunk.h>
42 #include <pulsecore/sink.h>
43 #include <pulsecore/modargs.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/rtclock.h>
53 #include <pulsecore/time-smoother.h>
55 #include "alsa-util.h"
56 #include "alsa-sink.h"
58 #define DEFAULT_DEVICE "default"
59 #define DEFAULT_TSCHED_BUFFER_USEC (2*PA_USEC_PER_SEC) /* 2s */
60 #define DEFAULT_TSCHED_WATERMARK_USEC (20*PA_USEC_PER_MSEC) /* 20ms */
61 #define TSCHED_MIN_SLEEP_USEC (3*PA_USEC_PER_MSEC) /* 3ms */
62 #define TSCHED_MIN_WAKEUP_USEC (3*PA_USEC_PER_MSEC) /* 3ms */
70 pa_thread_mq thread_mq
;
73 snd_pcm_t
*pcm_handle
;
75 pa_alsa_fdlist
*mixer_fdl
;
76 snd_mixer_t
*mixer_handle
;
77 snd_mixer_elem_t
*mixer_elem
;
78 long hw_volume_max
, hw_volume_min
;
79 long hw_dB_max
, hw_dB_min
;
80 pa_bool_t hw_dB_supported
;
81 pa_bool_t mixer_seperate_channels
;
82 pa_cvolume hardware_volume
;
84 size_t frame_size
, fragment_size
, hwbuf_size
, tsched_watermark
;
90 pa_bool_t use_mmap
, use_tsched
;
92 pa_bool_t first
, after_rewind
;
94 pa_rtpoll_item
*alsa_rtpoll_item
;
96 snd_mixer_selem_channel_id_t mixer_map
[SND_MIXER_SCHN_LAST
];
98 pa_smoother
*smoother
;
100 uint64_t since_start
;
102 snd_pcm_sframes_t hwbuf_unused_frames
;
105 static void userdata_free(struct userdata
*u
);
107 static void fix_tsched_watermark(struct userdata
*u
) {
109 size_t min_sleep
, min_wakeup
;
112 max_use
= u
->hwbuf_size
- (size_t) u
->hwbuf_unused_frames
* u
->frame_size
;
114 min_sleep
= pa_usec_to_bytes(TSCHED_MIN_SLEEP_USEC
, &u
->sink
->sample_spec
);
115 min_wakeup
= pa_usec_to_bytes(TSCHED_MIN_WAKEUP_USEC
, &u
->sink
->sample_spec
);
117 if (min_sleep
> max_use
/2)
118 min_sleep
= pa_frame_align(max_use
/2, &u
->sink
->sample_spec
);
119 if (min_sleep
< u
->frame_size
)
120 min_sleep
= u
->frame_size
;
122 if (min_wakeup
> max_use
/2)
123 min_wakeup
= pa_frame_align(max_use
/2, &u
->sink
->sample_spec
);
124 if (min_wakeup
< u
->frame_size
)
125 min_wakeup
= u
->frame_size
;
127 if (u
->tsched_watermark
> max_use
-min_sleep
)
128 u
->tsched_watermark
= max_use
-min_sleep
;
130 if (u
->tsched_watermark
< min_wakeup
)
131 u
->tsched_watermark
= min_wakeup
;
134 static void hw_sleep_time(struct userdata
*u
, pa_usec_t
*sleep_usec
, pa_usec_t
*process_usec
) {
137 pa_assert(sleep_usec
);
138 pa_assert(process_usec
);
142 usec
= pa_sink_get_requested_latency_within_thread(u
->sink
);
144 if (usec
== (pa_usec_t
) -1)
145 usec
= pa_bytes_to_usec(u
->hwbuf_size
, &u
->sink
->sample_spec
);
147 /* pa_log_debug("hw buffer time: %u ms", (unsigned) (usec / PA_USEC_PER_MSEC)); */
149 wm
= pa_bytes_to_usec(u
->tsched_watermark
, &u
->sink
->sample_spec
);
152 *sleep_usec
= usec
- wm
;
155 *process_usec
= *sleep_usec
= usec
/ 2;
157 /* pa_log_debug("after watermark: %u ms", (unsigned) (*sleep_usec / PA_USEC_PER_MSEC)); */
160 static int try_recover(struct userdata
*u
, const char *call
, int err
) {
165 pa_log_debug("%s: %s", call
, snd_strerror(err
));
167 pa_assert(err
!= -EAGAIN
);
170 pa_log_debug("%s: Buffer underrun!", call
);
172 if ((err
= snd_pcm_recover(u
->pcm_handle
, err
, 1)) == 0) {
178 pa_log("%s: %s", call
, snd_strerror(err
));
182 static size_t check_left_to_play(struct userdata
*u
, snd_pcm_sframes_t n
) {
185 if ((size_t) n
*u
->frame_size
< u
->hwbuf_size
)
186 left_to_play
= u
->hwbuf_size
- ((size_t) n
*u
->frame_size
);
190 if (left_to_play
> 0) {
191 /* pa_log_debug("%0.2f ms left to play", (double) pa_bytes_to_usec(left_to_play, &u->sink->sample_spec) / PA_USEC_PER_MSEC); */
192 } else if (!u
->first
&& !u
->after_rewind
) {
193 pa_log_info("Underrun!");
196 size_t old_watermark
= u
->tsched_watermark
;
198 u
->tsched_watermark
*= 2;
199 fix_tsched_watermark(u
);
201 if (old_watermark
!= u
->tsched_watermark
)
202 pa_log_notice("Increasing wakeup watermark to %0.2f ms",
203 (double) pa_bytes_to_usec(u
->tsched_watermark
, &u
->sink
->sample_spec
) / PA_USEC_PER_MSEC
);
210 static int mmap_write(struct userdata
*u
, pa_usec_t
*sleep_usec
, pa_bool_t polled
) {
212 pa_usec_t max_sleep_usec
= 0, process_usec
= 0;
216 pa_sink_assert_ref(u
->sink
);
219 hw_sleep_time(u
, &max_sleep_usec
, &process_usec
);
225 snd_pcm_hwsync(u
->pcm_handle
);
227 /* First we determine how many samples are missing to fill the
228 * buffer up to 100% */
230 if (PA_UNLIKELY((n
= pa_alsa_safe_avail_update(u
->pcm_handle
, u
->hwbuf_size
, &u
->sink
->sample_spec
)) < 0)) {
232 if ((r
= try_recover(u
, "snd_pcm_avail_update", (int) n
)) == 0)
238 left_to_play
= check_left_to_play(u
, n
);
242 /* We won't fill up the playback buffer before at least
243 * half the sleep time is over because otherwise we might
244 * ask for more data from the clients then they expect. We
245 * need to guarantee that clients only have to keep around
246 * a single hw buffer length. */
249 pa_bytes_to_usec(left_to_play
, &u
->sink
->sample_spec
) > process_usec
+max_sleep_usec
/2)
252 if (PA_UNLIKELY(n
<= u
->hwbuf_unused_frames
)) {
255 pa_log("ALSA woke us up to write new data to the device, but there was actually nothing to write! "
256 "Most likely this is an ALSA driver bug. Please report this issue to the ALSA developers. "
257 "We were woken up with POLLOUT set -- however a subsequent snd_pcm_avail_update() returned 0.");
262 n
-= u
->hwbuf_unused_frames
;
266 /* pa_log_debug("Filling up"); */
272 const snd_pcm_channel_area_t
*areas
;
273 snd_pcm_uframes_t offset
, frames
= (snd_pcm_uframes_t
) n
;
274 snd_pcm_sframes_t sframes
;
276 /* pa_log_debug("%lu frames to write", (unsigned long) frames); */
278 if (PA_UNLIKELY((err
= pa_alsa_safe_mmap_begin(u
->pcm_handle
, &areas
, &offset
, &frames
, u
->hwbuf_size
, &u
->sink
->sample_spec
)) < 0)) {
280 if ((r
= try_recover(u
, "snd_pcm_mmap_begin", err
)) == 0)
286 /* Make sure that if these memblocks need to be copied they will fit into one slot */
287 if (frames
> pa_mempool_block_size_max(u
->sink
->core
->mempool
)/u
->frame_size
)
288 frames
= pa_mempool_block_size_max(u
->sink
->core
->mempool
)/u
->frame_size
;
290 /* Check these are multiples of 8 bit */
291 pa_assert((areas
[0].first
& 7) == 0);
292 pa_assert((areas
[0].step
& 7)== 0);
294 /* We assume a single interleaved memory buffer */
295 pa_assert((areas
[0].first
>> 3) == 0);
296 pa_assert((areas
[0].step
>> 3) == u
->frame_size
);
298 p
= (uint8_t*) areas
[0].addr
+ (offset
* u
->frame_size
);
300 chunk
.memblock
= pa_memblock_new_fixed(u
->core
->mempool
, p
, frames
* u
->frame_size
, TRUE
);
301 chunk
.length
= pa_memblock_get_length(chunk
.memblock
);
304 pa_sink_render_into_full(u
->sink
, &chunk
);
306 /* FIXME: Maybe we can do something to keep this memory block
307 * a little bit longer around? */
308 pa_memblock_unref_fixed(chunk
.memblock
);
310 if (PA_UNLIKELY((sframes
= snd_pcm_mmap_commit(u
->pcm_handle
, offset
, frames
)) < 0)) {
312 if ((r
= try_recover(u
, "snd_pcm_mmap_commit", (int) sframes
)) == 0)
320 u
->frame_index
+= (int64_t) frames
;
321 u
->since_start
+= frames
* u
->frame_size
;
323 /* pa_log_debug("wrote %lu frames", (unsigned long) frames); */
325 if (frames
>= (snd_pcm_uframes_t
) n
)
328 n
-= (snd_pcm_sframes_t
) frames
;
332 *sleep_usec
= pa_bytes_to_usec(left_to_play
, &u
->sink
->sample_spec
) - process_usec
;
336 static int unix_write(struct userdata
*u
, pa_usec_t
*sleep_usec
, pa_bool_t polled
) {
338 pa_usec_t max_sleep_usec
= 0, process_usec
= 0;
342 pa_sink_assert_ref(u
->sink
);
345 hw_sleep_time(u
, &max_sleep_usec
, &process_usec
);
351 snd_pcm_hwsync(u
->pcm_handle
);
353 if (PA_UNLIKELY((n
= pa_alsa_safe_avail_update(u
->pcm_handle
, u
->hwbuf_size
, &u
->sink
->sample_spec
)) < 0)) {
355 if ((r
= try_recover(u
, "snd_pcm_avail_update", (int) n
)) == 0)
361 left_to_play
= check_left_to_play(u
, n
);
365 /* We won't fill up the playback buffer before at least
366 * half the sleep time is over because otherwise we might
367 * ask for more data from the clients then they expect. We
368 * need to guarantee that clients only have to keep around
369 * a single hw buffer length. */
372 pa_bytes_to_usec(left_to_play
, &u
->sink
->sample_spec
) > process_usec
+max_sleep_usec
/2)
375 if (PA_UNLIKELY(n
<= u
->hwbuf_unused_frames
)) {
378 pa_log("ALSA woke us up to write new data to the device, but there was actually nothing to write! "
379 "Most likely this is an ALSA driver bug. Please report this issue to the ALSA developers. "
380 "We were woken up with POLLOUT set -- however a subsequent snd_pcm_avail_update() returned 0.");
385 n
-= u
->hwbuf_unused_frames
;
390 snd_pcm_sframes_t frames
;
393 /* pa_log_debug("%lu frames to write", (unsigned long) frames); */
395 if (u
->memchunk
.length
<= 0)
396 pa_sink_render(u
->sink
, (size_t) n
* u
->frame_size
, &u
->memchunk
);
398 pa_assert(u
->memchunk
.length
> 0);
400 frames
= (snd_pcm_sframes_t
) (u
->memchunk
.length
/ u
->frame_size
);
405 p
= pa_memblock_acquire(u
->memchunk
.memblock
);
406 frames
= snd_pcm_writei(u
->pcm_handle
, (const uint8_t*) p
+ u
->memchunk
.index
, (snd_pcm_uframes_t
) frames
);
407 pa_memblock_release(u
->memchunk
.memblock
);
409 pa_assert(frames
!= 0);
411 if (PA_UNLIKELY(frames
< 0)) {
413 if ((r
= try_recover(u
, "snd_pcm_writei", (int) frames
)) == 0)
419 u
->memchunk
.index
+= (size_t) frames
* u
->frame_size
;
420 u
->memchunk
.length
-= (size_t) frames
* u
->frame_size
;
422 if (u
->memchunk
.length
<= 0) {
423 pa_memblock_unref(u
->memchunk
.memblock
);
424 pa_memchunk_reset(&u
->memchunk
);
429 u
->frame_index
+= frames
;
430 u
->since_start
+= (size_t) frames
* u
->frame_size
;
432 /* pa_log_debug("wrote %lu frames", (unsigned long) frames); */
441 *sleep_usec
= pa_bytes_to_usec(left_to_play
, &u
->sink
->sample_spec
) - process_usec
;
445 static void update_smoother(struct userdata
*u
) {
446 snd_pcm_sframes_t delay
= 0;
449 pa_usec_t now1
, now2
;
450 /* struct timeval timestamp; */
451 snd_pcm_status_t
*status
;
453 snd_pcm_status_alloca(&status
);
456 pa_assert(u
->pcm_handle
);
458 /* Let's update the time smoother */
460 snd_pcm_hwsync(u
->pcm_handle
);
461 snd_pcm_avail_update(u
->pcm_handle
);
463 /* if (PA_UNLIKELY((err = snd_pcm_status(u->pcm_handle, status)) < 0)) { */
464 /* pa_log("Failed to query DSP status data: %s", snd_strerror(err)); */
468 /* delay = snd_pcm_status_get_delay(status); */
470 if (PA_UNLIKELY((err
= snd_pcm_delay(u
->pcm_handle
, &delay
)) < 0)) {
471 pa_log("Failed to query DSP status data: %s", snd_strerror(err
));
475 frames
= u
->frame_index
- delay
;
477 /* pa_log_debug("frame_index = %llu, delay = %llu, p = %llu", (unsigned long long) u->frame_index, (unsigned long long) delay, (unsigned long long) frames); */
479 /* snd_pcm_status_get_tstamp(status, ×tamp); */
480 /* pa_rtclock_from_wallclock(×tamp); */
481 /* now1 = pa_timeval_load(×tamp); */
483 now1
= pa_rtclock_usec();
484 now2
= pa_bytes_to_usec((uint64_t) frames
* u
->frame_size
, &u
->sink
->sample_spec
);
485 pa_smoother_put(u
->smoother
, now1
, now2
);
488 static pa_usec_t
sink_get_latency(struct userdata
*u
) {
491 pa_usec_t now1
, now2
;
495 now1
= pa_rtclock_usec();
496 now2
= pa_smoother_get(u
->smoother
, now1
);
498 delay
= (int64_t) pa_bytes_to_usec((uint64_t) u
->frame_index
* u
->frame_size
, &u
->sink
->sample_spec
) - (int64_t) now2
;
501 r
= (pa_usec_t
) delay
;
503 if (u
->memchunk
.memblock
)
504 r
+= pa_bytes_to_usec(u
->memchunk
.length
, &u
->sink
->sample_spec
);
509 static int build_pollfd(struct userdata
*u
) {
511 pa_assert(u
->pcm_handle
);
513 if (u
->alsa_rtpoll_item
)
514 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
516 if (!(u
->alsa_rtpoll_item
= pa_alsa_build_pollfd(u
->pcm_handle
, u
->rtpoll
)))
522 static int suspend(struct userdata
*u
) {
524 pa_assert(u
->pcm_handle
);
526 pa_smoother_pause(u
->smoother
, pa_rtclock_usec());
528 /* Let's suspend -- we don't call snd_pcm_drain() here since that might
529 * take awfully long with our long buffer sizes today. */
530 snd_pcm_close(u
->pcm_handle
);
531 u
->pcm_handle
= NULL
;
533 if (u
->alsa_rtpoll_item
) {
534 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
535 u
->alsa_rtpoll_item
= NULL
;
538 pa_log_info("Device suspended...");
543 static int update_sw_params(struct userdata
*u
) {
544 snd_pcm_uframes_t avail_min
;
549 /* Use the full buffer if noone asked us for anything specific */
550 u
->hwbuf_unused_frames
= 0;
555 if ((latency
= pa_sink_get_requested_latency_within_thread(u
->sink
)) != (pa_usec_t
) -1) {
558 pa_log_debug("latency set to %0.2fms", (double) latency
/ PA_USEC_PER_MSEC
);
560 b
= pa_usec_to_bytes(latency
, &u
->sink
->sample_spec
);
562 /* We need at least one sample in our buffer */
564 if (PA_UNLIKELY(b
< u
->frame_size
))
567 u
->hwbuf_unused_frames
= (snd_pcm_sframes_t
)
568 (PA_LIKELY(b
< u
->hwbuf_size
) ?
569 ((u
->hwbuf_size
- b
) / u
->frame_size
) : 0);
572 fix_tsched_watermark(u
);
575 pa_log_debug("hwbuf_unused_frames=%lu", (unsigned long) u
->hwbuf_unused_frames
);
577 /* We need at last one frame in the used part of the buffer */
578 avail_min
= (snd_pcm_uframes_t
) u
->hwbuf_unused_frames
+ 1;
581 pa_usec_t sleep_usec
, process_usec
;
583 hw_sleep_time(u
, &sleep_usec
, &process_usec
);
584 avail_min
+= pa_usec_to_bytes(sleep_usec
, &u
->sink
->sample_spec
) / u
->frame_size
;
587 pa_log_debug("setting avail_min=%lu", (unsigned long) avail_min
);
589 if ((err
= pa_alsa_set_sw_params(u
->pcm_handle
, avail_min
)) < 0) {
590 pa_log("Failed to set software parameters: %s", snd_strerror(err
));
594 pa_sink_set_max_request(u
->sink
, u
->hwbuf_size
- (size_t) u
->hwbuf_unused_frames
* u
->frame_size
);
599 static int unsuspend(struct userdata
*u
) {
604 snd_pcm_uframes_t period_size
;
607 pa_assert(!u
->pcm_handle
);
609 pa_log_info("Trying resume...");
611 snd_config_update_free_global();
612 if ((err
= snd_pcm_open(&u
->pcm_handle
, u
->device_name
, SND_PCM_STREAM_PLAYBACK
,
613 /*SND_PCM_NONBLOCK|*/
614 SND_PCM_NO_AUTO_RESAMPLE
|
615 SND_PCM_NO_AUTO_CHANNELS
|
616 SND_PCM_NO_AUTO_FORMAT
)) < 0) {
617 pa_log("Error opening PCM device %s: %s", u
->device_name
, snd_strerror(err
));
621 ss
= u
->sink
->sample_spec
;
622 nfrags
= u
->nfragments
;
623 period_size
= u
->fragment_size
/ u
->frame_size
;
627 if ((err
= pa_alsa_set_hw_params(u
->pcm_handle
, &ss
, &nfrags
, &period_size
, u
->hwbuf_size
/ u
->frame_size
, &b
, &d
, TRUE
)) < 0) {
628 pa_log("Failed to set hardware parameters: %s", snd_strerror(err
));
632 if (b
!= u
->use_mmap
|| d
!= u
->use_tsched
) {
633 pa_log_warn("Resume failed, couldn't get original access mode.");
637 if (!pa_sample_spec_equal(&ss
, &u
->sink
->sample_spec
)) {
638 pa_log_warn("Resume failed, couldn't restore original sample settings.");
642 if (nfrags
!= u
->nfragments
|| period_size
*u
->frame_size
!= u
->fragment_size
) {
643 pa_log_warn("Resume failed, couldn't restore original fragment settings. (Old: %lu*%lu, New %lu*%lu)",
644 (unsigned long) u
->nfragments
, (unsigned long) u
->fragment_size
,
645 (unsigned long) nfrags
, period_size
* u
->frame_size
);
649 if (update_sw_params(u
) < 0)
652 if (build_pollfd(u
) < 0)
655 /* FIXME: We need to reload the volume somehow */
660 pa_log_info("Resumed successfully...");
666 snd_pcm_close(u
->pcm_handle
);
667 u
->pcm_handle
= NULL
;
673 static int sink_process_msg(pa_msgobject
*o
, int code
, void *data
, int64_t offset
, pa_memchunk
*chunk
) {
674 struct userdata
*u
= PA_SINK(o
)->userdata
;
678 case PA_SINK_MESSAGE_GET_LATENCY
: {
682 r
= sink_get_latency(u
);
684 *((pa_usec_t
*) data
) = r
;
689 case PA_SINK_MESSAGE_SET_STATE
:
691 switch ((pa_sink_state_t
) PA_PTR_TO_UINT(data
)) {
693 case PA_SINK_SUSPENDED
:
694 pa_assert(PA_SINK_IS_OPENED(u
->sink
->thread_info
.state
));
702 case PA_SINK_RUNNING
:
704 if (u
->sink
->thread_info
.state
== PA_SINK_INIT
) {
705 if (build_pollfd(u
) < 0)
709 if (u
->sink
->thread_info
.state
== PA_SINK_SUSPENDED
) {
710 if (unsuspend(u
) < 0)
716 case PA_SINK_UNLINKED
:
724 return pa_sink_process_msg(o
, code
, data
, offset
, chunk
);
727 static int mixer_callback(snd_mixer_elem_t
*elem
, unsigned int mask
) {
728 struct userdata
*u
= snd_mixer_elem_get_callback_private(elem
);
731 pa_assert(u
->mixer_handle
);
733 if (mask
== SND_CTL_EVENT_MASK_REMOVE
)
736 if (mask
& SND_CTL_EVENT_MASK_VALUE
) {
737 pa_sink_get_volume(u
->sink
, TRUE
);
738 pa_sink_get_mute(u
->sink
, TRUE
);
744 static pa_volume_t
from_alsa_volume(struct userdata
*u
, long alsa_vol
) {
746 return (pa_volume_t
) round(((double) (alsa_vol
- u
->hw_volume_min
) * PA_VOLUME_NORM
) /
747 (double) (u
->hw_volume_max
- u
->hw_volume_min
));
750 static long to_alsa_volume(struct userdata
*u
, pa_volume_t vol
) {
753 alsa_vol
= (long) round(((double) vol
* (double) (u
->hw_volume_max
- u
->hw_volume_min
))
754 / PA_VOLUME_NORM
) + u
->hw_volume_min
;
756 return PA_CLAMP_UNLIKELY(alsa_vol
, u
->hw_volume_min
, u
->hw_volume_max
);
759 static int sink_get_volume_cb(pa_sink
*s
) {
760 struct userdata
*u
= s
->userdata
;
764 char t
[PA_CVOLUME_SNPRINT_MAX
];
767 pa_assert(u
->mixer_elem
);
769 if (u
->mixer_seperate_channels
) {
771 r
.channels
= s
->sample_spec
.channels
;
773 for (i
= 0; i
< s
->sample_spec
.channels
; i
++) {
776 if (u
->hw_dB_supported
) {
778 if ((err
= snd_mixer_selem_get_playback_dB(u
->mixer_elem
, u
->mixer_map
[i
], &alsa_vol
)) < 0)
781 #ifdef HAVE_VALGRIND_MEMCHECK_H
782 VALGRIND_MAKE_MEM_DEFINED(&alsa_vol
, sizeof(alsa_vol
));
785 r
.values
[i
] = pa_sw_volume_from_dB((double) (alsa_vol
- u
->hw_dB_max
) / 100.0);
788 if ((err
= snd_mixer_selem_get_playback_volume(u
->mixer_elem
, u
->mixer_map
[i
], &alsa_vol
)) < 0)
791 r
.values
[i
] = from_alsa_volume(u
, alsa_vol
);
798 if (u
->hw_dB_supported
) {
800 if ((err
= snd_mixer_selem_get_playback_dB(u
->mixer_elem
, SND_MIXER_SCHN_MONO
, &alsa_vol
)) < 0)
803 #ifdef HAVE_VALGRIND_MEMCHECK_H
804 VALGRIND_MAKE_MEM_DEFINED(&alsa_vol
, sizeof(alsa_vol
));
807 pa_cvolume_set(&r
, s
->sample_spec
.channels
, pa_sw_volume_from_dB((double) (alsa_vol
- u
->hw_dB_max
) / 100.0));
811 if ((err
= snd_mixer_selem_get_playback_volume(u
->mixer_elem
, SND_MIXER_SCHN_MONO
, &alsa_vol
)) < 0)
814 pa_cvolume_set(&r
, s
->sample_spec
.channels
, from_alsa_volume(u
, alsa_vol
));
818 pa_log_debug("Read hardware volume: %s", pa_cvolume_snprint(t
, sizeof(t
), &r
));
820 if (!pa_cvolume_equal(&u
->hardware_volume
, &r
)) {
822 u
->hardware_volume
= s
->volume
= r
;
824 if (u
->hw_dB_supported
) {
827 /* Hmm, so the hardware volume changed, let's reset our software volume */
829 pa_cvolume_reset(&reset
, s
->sample_spec
.channels
);
830 pa_sink_set_soft_volume(s
, &reset
);
837 pa_log_error("Unable to read volume: %s", snd_strerror(err
));
842 static int sink_set_volume_cb(pa_sink
*s
) {
843 struct userdata
*u
= s
->userdata
;
849 pa_assert(u
->mixer_elem
);
851 if (u
->mixer_seperate_channels
) {
853 r
.channels
= s
->sample_spec
.channels
;
855 for (i
= 0; i
< s
->sample_spec
.channels
; i
++) {
859 vol
= s
->volume
.values
[i
];
861 if (u
->hw_dB_supported
) {
863 alsa_vol
= (long) (pa_sw_volume_to_dB(vol
) * 100);
864 alsa_vol
+= u
->hw_dB_max
;
865 alsa_vol
= PA_CLAMP_UNLIKELY(alsa_vol
, u
->hw_dB_min
, u
->hw_dB_max
);
867 if ((err
= snd_mixer_selem_set_playback_dB(u
->mixer_elem
, u
->mixer_map
[i
], alsa_vol
, 1)) < 0)
870 if ((err
= snd_mixer_selem_get_playback_dB(u
->mixer_elem
, u
->mixer_map
[i
], &alsa_vol
)) < 0)
873 r
.values
[i
] = pa_sw_volume_from_dB((double) (alsa_vol
- u
->hw_dB_max
) / 100.0);
876 alsa_vol
= to_alsa_volume(u
, vol
);
878 if ((err
= snd_mixer_selem_set_playback_volume(u
->mixer_elem
, u
->mixer_map
[i
], alsa_vol
)) < 0)
881 if ((err
= snd_mixer_selem_get_playback_volume(u
->mixer_elem
, u
->mixer_map
[i
], &alsa_vol
)) < 0)
884 r
.values
[i
] = from_alsa_volume(u
, alsa_vol
);
892 vol
= pa_cvolume_max(&s
->volume
);
894 if (u
->hw_dB_supported
) {
895 alsa_vol
= (long) (pa_sw_volume_to_dB(vol
) * 100);
896 alsa_vol
+= u
->hw_dB_max
;
897 alsa_vol
= PA_CLAMP_UNLIKELY(alsa_vol
, u
->hw_dB_min
, u
->hw_dB_max
);
899 if ((err
= snd_mixer_selem_set_playback_dB_all(u
->mixer_elem
, alsa_vol
, 1)) < 0)
902 if ((err
= snd_mixer_selem_get_playback_dB(u
->mixer_elem
, SND_MIXER_SCHN_MONO
, &alsa_vol
)) < 0)
905 pa_cvolume_set(&r
, s
->volume
.channels
, pa_sw_volume_from_dB((double) (alsa_vol
- u
->hw_dB_max
) / 100.0));
908 alsa_vol
= to_alsa_volume(u
, vol
);
910 if ((err
= snd_mixer_selem_set_playback_volume_all(u
->mixer_elem
, alsa_vol
)) < 0)
913 if ((err
= snd_mixer_selem_get_playback_volume(u
->mixer_elem
, SND_MIXER_SCHN_MONO
, &alsa_vol
)) < 0)
916 pa_cvolume_set(&r
, s
->sample_spec
.channels
, from_alsa_volume(u
, alsa_vol
));
920 u
->hardware_volume
= r
;
922 if (u
->hw_dB_supported
) {
923 char t
[PA_CVOLUME_SNPRINT_MAX
];
925 /* Match exactly what the user requested by software */
927 pa_sw_cvolume_divide(&r
, &s
->volume
, &r
);
928 pa_sink_set_soft_volume(s
, &r
);
930 pa_log_debug("Requested volume: %s", pa_cvolume_snprint(t
, sizeof(t
), &s
->volume
));
931 pa_log_debug("Got hardware volume: %s", pa_cvolume_snprint(t
, sizeof(t
), &u
->hardware_volume
));
932 pa_log_debug("Calculated software volume: %s", pa_cvolume_snprint(t
, sizeof(t
), &r
));
936 /* We can't match exactly what the user requested, hence let's
937 * at least tell the user about it */
944 pa_log_error("Unable to set volume: %s", snd_strerror(err
));
949 static int sink_get_mute_cb(pa_sink
*s
) {
950 struct userdata
*u
= s
->userdata
;
954 pa_assert(u
->mixer_elem
);
956 if ((err
= snd_mixer_selem_get_playback_switch(u
->mixer_elem
, 0, &sw
)) < 0) {
957 pa_log_error("Unable to get switch: %s", snd_strerror(err
));
966 static int sink_set_mute_cb(pa_sink
*s
) {
967 struct userdata
*u
= s
->userdata
;
971 pa_assert(u
->mixer_elem
);
973 if ((err
= snd_mixer_selem_set_playback_switch_all(u
->mixer_elem
, !s
->muted
)) < 0) {
974 pa_log_error("Unable to set switch: %s", snd_strerror(err
));
981 static void sink_update_requested_latency_cb(pa_sink
*s
) {
982 struct userdata
*u
= s
->userdata
;
983 snd_pcm_sframes_t before
;
989 before
= u
->hwbuf_unused_frames
;
992 /* Let's check whether we now use only a smaller part of the
993 buffer then before. If so, we need to make sure that subsequent
994 rewinds are relative to the new maxium fill level and not to the
995 current fill level. Thus, let's do a full rewind once, to clear
998 if (u
->hwbuf_unused_frames
> before
) {
999 pa_log_debug("Requesting rewind due to latency change.");
1000 pa_sink_request_rewind(s
, (size_t) -1);
1004 static int process_rewind(struct userdata
*u
) {
1005 snd_pcm_sframes_t unused
;
1006 size_t rewind_nbytes
, unused_nbytes
, limit_nbytes
;
1009 /* Figure out how much we shall rewind and reset the counter */
1010 rewind_nbytes
= u
->sink
->thread_info
.rewind_nbytes
;
1011 u
->sink
->thread_info
.rewind_nbytes
= 0;
1013 if (rewind_nbytes
<= 0)
1016 pa_assert(rewind_nbytes
> 0);
1017 pa_log_debug("Requested to rewind %lu bytes.", (unsigned long) rewind_nbytes
);
1019 snd_pcm_hwsync(u
->pcm_handle
);
1020 if ((unused
= snd_pcm_avail_update(u
->pcm_handle
)) < 0) {
1021 pa_log("snd_pcm_avail_update() failed: %s", snd_strerror((int) unused
));
1025 unused_nbytes
= u
->tsched_watermark
+ (size_t) unused
* u
->frame_size
;
1027 if (u
->hwbuf_size
> unused_nbytes
)
1028 limit_nbytes
= u
->hwbuf_size
- unused_nbytes
;
1032 if (rewind_nbytes
> limit_nbytes
)
1033 rewind_nbytes
= limit_nbytes
;
1035 if (rewind_nbytes
> 0) {
1036 snd_pcm_sframes_t in_frames
, out_frames
;
1038 pa_log_debug("Limited to %lu bytes.", (unsigned long) rewind_nbytes
);
1040 in_frames
= (snd_pcm_sframes_t
) (rewind_nbytes
/ u
->frame_size
);
1041 pa_log_debug("before: %lu", (unsigned long) in_frames
);
1042 if ((out_frames
= snd_pcm_rewind(u
->pcm_handle
, (snd_pcm_uframes_t
) in_frames
)) < 0) {
1043 pa_log("snd_pcm_rewind() failed: %s", snd_strerror((int) out_frames
));
1046 pa_log_debug("after: %lu", (unsigned long) out_frames
);
1048 rewind_nbytes
= (size_t) out_frames
* u
->frame_size
;
1050 if (rewind_nbytes
<= 0)
1051 pa_log_info("Tried rewind, but was apparently not possible.");
1053 u
->frame_index
-= out_frames
;
1054 pa_log_debug("Rewound %lu bytes.", (unsigned long) rewind_nbytes
);
1055 pa_sink_process_rewind(u
->sink
, rewind_nbytes
);
1057 u
->after_rewind
= TRUE
;
1061 pa_log_debug("Mhmm, actually there is nothing to rewind.");
1065 pa_sink_process_rewind(u
->sink
, 0);
1071 static void thread_func(void *userdata
) {
1072 struct userdata
*u
= userdata
;
1073 unsigned short revents
= 0;
1077 pa_log_debug("Thread starting up");
1079 if (u
->core
->realtime_scheduling
)
1080 pa_make_realtime(u
->core
->realtime_priority
);
1082 pa_thread_mq_install(&u
->thread_mq
);
1083 pa_rtpoll_install(u
->rtpoll
);
1088 /* pa_log_debug("loop"); */
1090 /* Render some data and write it to the dsp */
1091 if (PA_SINK_IS_OPENED(u
->sink
->thread_info
.state
)) {
1093 pa_usec_t sleep_usec
= 0;
1095 if (u
->sink
->thread_info
.rewind_requested
)
1096 if (process_rewind(u
) < 0)
1100 work_done
= mmap_write(u
, &sleep_usec
, revents
& POLLOUT
);
1102 work_done
= unix_write(u
, &sleep_usec
, revents
& POLLOUT
);
1107 /* pa_log_debug("work_done = %i", work_done); */
1112 pa_log_info("Starting playback.");
1113 snd_pcm_start(u
->pcm_handle
);
1115 pa_smoother_resume(u
->smoother
, pa_rtclock_usec());
1121 if (u
->use_tsched
) {
1124 if (u
->since_start
<= u
->hwbuf_size
) {
1126 /* USB devices on ALSA seem to hit a buffer
1127 * underrun during the first iterations much
1128 * quicker then we calculate here, probably due to
1129 * the transport latency. To accomodate for that
1130 * we artificially decrease the sleep time until
1131 * we have filled the buffer at least once
1134 /*pa_log_debug("Cutting sleep time for the initial iterations by half.");*/
1138 /* OK, the playback buffer is now full, let's
1139 * calculate when to wake up next */
1140 /* pa_log_debug("Waking up in %0.2fms (sound card clock).", (double) sleep_usec / PA_USEC_PER_MSEC); */
1142 /* Convert from the sound card time domain to the
1143 * system time domain */
1144 cusec
= pa_smoother_translate(u
->smoother
, pa_rtclock_usec(), sleep_usec
);
1146 /* pa_log_debug("Waking up in %0.2fms (system clock).", (double) cusec / PA_USEC_PER_MSEC); */
1148 /* We don't trust the conversion, so we wake up whatever comes first */
1149 pa_rtpoll_set_timer_relative(u
->rtpoll
, PA_MIN(sleep_usec
, cusec
));
1153 u
->after_rewind
= FALSE
;
1155 } else if (u
->use_tsched
)
1157 /* OK, we're in an invalid state, let's disable our timers */
1158 pa_rtpoll_set_timer_disabled(u
->rtpoll
);
1160 /* Hmm, nothing to do. Let's sleep */
1161 if ((ret
= pa_rtpoll_run(u
->rtpoll
, TRUE
)) < 0)
1167 /* Tell ALSA about this and process its response */
1168 if (PA_SINK_IS_OPENED(u
->sink
->thread_info
.state
)) {
1169 struct pollfd
*pollfd
;
1173 pollfd
= pa_rtpoll_item_get_pollfd(u
->alsa_rtpoll_item
, &n
);
1175 if ((err
= snd_pcm_poll_descriptors_revents(u
->pcm_handle
, pollfd
, n
, &revents
)) < 0) {
1176 pa_log("snd_pcm_poll_descriptors_revents() failed: %s", snd_strerror(err
));
1180 if (revents
& (POLLIN
|POLLERR
|POLLNVAL
|POLLHUP
|POLLPRI
)) {
1181 if (pa_alsa_recover_from_poll(u
->pcm_handle
, revents
) < 0)
1188 if (revents
&& u
->use_tsched
)
1189 pa_log_debug("Wakeup from ALSA!%s%s", (revents
& POLLIN
) ? " INPUT" : "", (revents
& POLLOUT
) ? " OUTPUT" : "");
1195 /* If this was no regular exit from the loop we have to continue
1196 * processing messages until we received PA_MESSAGE_SHUTDOWN */
1197 pa_asyncmsgq_post(u
->thread_mq
.outq
, PA_MSGOBJECT(u
->core
), PA_CORE_MESSAGE_UNLOAD_MODULE
, u
->module
, 0, NULL
, NULL
);
1198 pa_asyncmsgq_wait_for(u
->thread_mq
.inq
, PA_MESSAGE_SHUTDOWN
);
1201 pa_log_debug("Thread shutting down");
1204 pa_sink
*pa_alsa_sink_new(pa_module
*m
, pa_modargs
*ma
, const pa_alsa_profile_info
*profile
) {
1206 struct userdata
*u
= NULL
;
1210 uint32_t nfrags
, hwbuf_size
, frag_size
, tsched_size
, tsched_watermark
;
1211 snd_pcm_uframes_t period_frames
, tsched_frames
;
1213 snd_pcm_info_t
*pcm_info
= NULL
;
1216 char *name_buf
= NULL
;
1217 pa_bool_t namereg_fail
;
1218 pa_bool_t use_mmap
= TRUE
, b
, use_tsched
= TRUE
, d
;
1220 pa_sink_new_data data
;
1222 snd_pcm_info_alloca(&pcm_info
);
1226 ss
= m
->core
->default_sample_spec
;
1227 if (pa_modargs_get_sample_spec_and_channel_map(ma
, &ss
, &map
, PA_CHANNEL_MAP_ALSA
) < 0) {
1228 pa_log("Failed to parse sample specification and channel map");
1232 frame_size
= pa_frame_size(&ss
);
1234 nfrags
= m
->core
->default_n_fragments
;
1235 frag_size
= (uint32_t) pa_usec_to_bytes(m
->core
->default_fragment_size_msec
*PA_USEC_PER_MSEC
, &ss
);
1237 frag_size
= (uint32_t) frame_size
;
1238 tsched_size
= (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_BUFFER_USEC
, &ss
);
1239 tsched_watermark
= (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_WATERMARK_USEC
, &ss
);
1241 if (pa_modargs_get_value_u32(ma
, "fragments", &nfrags
) < 0 ||
1242 pa_modargs_get_value_u32(ma
, "fragment_size", &frag_size
) < 0 ||
1243 pa_modargs_get_value_u32(ma
, "tsched_buffer_size", &tsched_size
) < 0 ||
1244 pa_modargs_get_value_u32(ma
, "tsched_buffer_watermark", &tsched_watermark
) < 0) {
1245 pa_log("Failed to parse buffer metrics");
1249 hwbuf_size
= frag_size
* nfrags
;
1250 period_frames
= frag_size
/frame_size
;
1251 tsched_frames
= tsched_size
/frame_size
;
1253 if (pa_modargs_get_value_boolean(ma
, "mmap", &use_mmap
) < 0) {
1254 pa_log("Failed to parse mmap argument.");
1258 if (pa_modargs_get_value_boolean(ma
, "tsched", &use_tsched
) < 0) {
1259 pa_log("Failed to parse tsched argument.");
1263 if (use_tsched
&& !pa_rtclock_hrtimer()) {
1264 pa_log_notice("Disabling timer-based scheduling because high-resolution timers are not available from the kernel.");
1268 u
= pa_xnew0(struct userdata
, 1);
1271 u
->use_mmap
= use_mmap
;
1272 u
->use_tsched
= use_tsched
;
1275 u
->after_rewind
= FALSE
;
1276 u
->rtpoll
= pa_rtpoll_new();
1277 pa_thread_mq_init(&u
->thread_mq
, m
->core
->mainloop
, u
->rtpoll
);
1278 u
->alsa_rtpoll_item
= NULL
;
1280 u
->smoother
= pa_smoother_new(DEFAULT_TSCHED_BUFFER_USEC
*2, DEFAULT_TSCHED_BUFFER_USEC
*2, TRUE
, 5);
1281 usec
= pa_rtclock_usec();
1282 pa_smoother_set_time_offset(u
->smoother
, usec
);
1283 pa_smoother_pause(u
->smoother
, usec
);
1290 if (!(u
->pcm_handle
= pa_alsa_open_by_device_id_profile(
1294 SND_PCM_STREAM_PLAYBACK
,
1295 &nfrags
, &period_frames
, tsched_frames
,
1300 } else if ((dev_id
= pa_modargs_get_value(ma
, "device_id", NULL
))) {
1302 if (!(u
->pcm_handle
= pa_alsa_open_by_device_id_auto(
1306 SND_PCM_STREAM_PLAYBACK
,
1307 &nfrags
, &period_frames
, tsched_frames
,
1314 if (!(u
->pcm_handle
= pa_alsa_open_by_device_string(
1315 pa_modargs_get_value(ma
, "device", DEFAULT_DEVICE
),
1318 SND_PCM_STREAM_PLAYBACK
,
1319 &nfrags
, &period_frames
, tsched_frames
,
1325 pa_assert(u
->device_name
);
1326 pa_log_info("Successfully opened device %s.", u
->device_name
);
1329 pa_log_info("Selected configuration '%s' (%s).", profile
->description
, profile
->name
);
1331 if (use_mmap
&& !b
) {
1332 pa_log_info("Device doesn't support mmap(), falling back to UNIX read/write mode.");
1333 u
->use_mmap
= use_mmap
= FALSE
;
1336 if (use_tsched
&& (!b
|| !d
)) {
1337 pa_log_info("Cannot enabled timer-based scheduling, falling back to sound IRQ scheduling.");
1338 u
->use_tsched
= use_tsched
= FALSE
;
1342 pa_log_info("Successfully enabled mmap() mode.");
1345 pa_log_info("Successfully enabled timer-based scheduling mode.");
1347 if ((err
= snd_pcm_info(u
->pcm_handle
, pcm_info
)) < 0) {
1348 pa_log("Error fetching PCM info: %s", snd_strerror(err
));
1352 /* ALSA might tweak the sample spec, so recalculate the frame size */
1353 frame_size
= pa_frame_size(&ss
);
1355 if ((err
= snd_mixer_open(&u
->mixer_handle
, 0)) < 0)
1356 pa_log_warn("Error opening mixer: %s", snd_strerror(err
));
1358 pa_bool_t found
= FALSE
;
1360 if (pa_alsa_prepare_mixer(u
->mixer_handle
, u
->device_name
) >= 0)
1363 snd_pcm_info_t
*info
;
1365 snd_pcm_info_alloca(&info
);
1367 if (snd_pcm_info(u
->pcm_handle
, info
) >= 0) {
1371 if ((card
= snd_pcm_info_get_card(info
)) >= 0) {
1373 md
= pa_sprintf_malloc("hw:%i", card
);
1375 if (strcmp(u
->device_name
, md
))
1376 if (pa_alsa_prepare_mixer(u
->mixer_handle
, md
) >= 0)
1384 if (!(u
->mixer_elem
= pa_alsa_find_elem(u
->mixer_handle
, "Master", "PCM", TRUE
)))
1388 snd_mixer_close(u
->mixer_handle
);
1389 u
->mixer_handle
= NULL
;
1393 if ((name
= pa_modargs_get_value(ma
, "sink_name", NULL
)))
1394 namereg_fail
= TRUE
;
1395 else if ((name
= pa_modargs_get_value(ma
, "name", NULL
))) {
1396 name
= name_buf
= pa_sprintf_malloc("alsa_output.%s", name
);
1397 namereg_fail
= TRUE
;
1399 name
= name_buf
= pa_sprintf_malloc("alsa_output.%s", u
->device_name
);
1400 namereg_fail
= FALSE
;
1403 pa_sink_new_data_init(&data
);
1404 data
.driver
= __FILE__
;
1406 pa_sink_new_data_set_name(&data
, name
);
1407 data
.namereg_fail
= namereg_fail
;
1408 pa_sink_new_data_set_sample_spec(&data
, &ss
);
1409 pa_sink_new_data_set_channel_map(&data
, &map
);
1411 pa_alsa_init_proplist_pcm(data
.proplist
, pcm_info
);
1412 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_STRING
, u
->device_name
);
1413 pa_proplist_setf(data
.proplist
, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE
, "%lu", (unsigned long) (period_frames
* frame_size
* nfrags
));
1414 pa_proplist_setf(data
.proplist
, PA_PROP_DEVICE_BUFFERING_FRAGMENT_SIZE
, "%lu", (unsigned long) (period_frames
* frame_size
));
1415 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_ACCESS_MODE
, u
->use_tsched
? "mmap+timer" : (u
->use_mmap
? "mmap" : "serial"));
1418 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_PROFILE_NAME
, profile
->name
);
1419 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_PROFILE_DESCRIPTION
, profile
->description
);
1422 u
->sink
= pa_sink_new(m
->core
, &data
, PA_SINK_HARDWARE
|PA_SINK_LATENCY
);
1423 pa_sink_new_data_done(&data
);
1427 pa_log("Failed to create sink object");
1431 u
->sink
->parent
.process_msg
= sink_process_msg
;
1432 u
->sink
->update_requested_latency
= sink_update_requested_latency_cb
;
1433 u
->sink
->userdata
= u
;
1435 pa_sink_set_asyncmsgq(u
->sink
, u
->thread_mq
.inq
);
1436 pa_sink_set_rtpoll(u
->sink
, u
->rtpoll
);
1438 u
->frame_size
= frame_size
;
1439 u
->fragment_size
= frag_size
= (uint32_t) (period_frames
* frame_size
);
1440 u
->nfragments
= nfrags
;
1441 u
->hwbuf_size
= u
->fragment_size
* nfrags
;
1442 u
->hwbuf_unused_frames
= 0;
1443 u
->tsched_watermark
= tsched_watermark
;
1445 u
->hw_dB_supported
= FALSE
;
1446 u
->hw_dB_min
= u
->hw_dB_max
= 0;
1447 u
->hw_volume_min
= u
->hw_volume_max
= 0;
1448 u
->mixer_seperate_channels
= FALSE
;
1449 pa_cvolume_mute(&u
->hardware_volume
, u
->sink
->sample_spec
.channels
);
1452 fix_tsched_watermark(u
);
1454 u
->sink
->thread_info
.max_rewind
= use_tsched
? u
->hwbuf_size
: 0;
1455 u
->sink
->thread_info
.max_request
= u
->hwbuf_size
;
1457 pa_sink_set_latency_range(u
->sink
,
1458 !use_tsched
? pa_bytes_to_usec(u
->hwbuf_size
, &ss
) : (pa_usec_t
) -1,
1459 pa_bytes_to_usec(u
->hwbuf_size
, &ss
));
1461 pa_log_info("Using %u fragments of size %lu bytes, buffer time is %0.2fms",
1462 nfrags
, (long unsigned) u
->fragment_size
,
1463 (double) pa_bytes_to_usec(u
->hwbuf_size
, &ss
) / PA_USEC_PER_MSEC
);
1466 pa_log_info("Time scheduling watermark is %0.2fms",
1467 (double) pa_bytes_to_usec(u
->tsched_watermark
, &ss
) / PA_USEC_PER_MSEC
);
1469 if (update_sw_params(u
) < 0)
1472 pa_memchunk_reset(&u
->memchunk
);
1474 if (u
->mixer_handle
) {
1475 pa_assert(u
->mixer_elem
);
1477 if (snd_mixer_selem_has_playback_volume(u
->mixer_elem
)) {
1478 pa_bool_t suitable
= FALSE
;
1480 if (snd_mixer_selem_get_playback_volume_range(u
->mixer_elem
, &u
->hw_volume_min
, &u
->hw_volume_max
) < 0)
1481 pa_log_info("Failed to get volume range. Falling back to software volume control.");
1482 else if (u
->hw_volume_min
>= u
->hw_volume_max
)
1483 pa_log_warn("Your kernel driver is broken: it reports a volume range from %li to %li which makes no sense.", u
->hw_volume_min
, u
->hw_volume_max
);
1485 pa_log_info("Volume ranges from %li to %li.", u
->hw_volume_min
, u
->hw_volume_max
);
1490 if (snd_mixer_selem_get_playback_dB_range(u
->mixer_elem
, &u
->hw_dB_min
, &u
->hw_dB_max
) < 0)
1491 pa_log_info("Mixer doesn't support dB information.");
1493 #ifdef HAVE_VALGRIND_MEMCHECK_H
1494 VALGRIND_MAKE_MEM_DEFINED(&u
->hw_dB_min
, sizeof(u
->hw_dB_min
));
1495 VALGRIND_MAKE_MEM_DEFINED(&u
->hw_dB_max
, sizeof(u
->hw_dB_max
));
1498 if (u
->hw_dB_min
>= u
->hw_dB_max
)
1499 pa_log_warn("Your kernel driver is broken: it reports a volume range from %0.2f dB to %0.2f dB which makes no sense.", (double) u
->hw_dB_min
/100.0, (double) u
->hw_dB_max
/100.0);
1501 pa_log_info("Volume ranges from %0.2f dB to %0.2f dB.", (double) u
->hw_dB_min
/100.0, (double) u
->hw_dB_max
/100.0);
1502 u
->hw_dB_supported
= TRUE
;
1504 if (u
->hw_dB_max
> 0) {
1505 u
->sink
->base_volume
= pa_sw_volume_from_dB(- (double) u
->hw_dB_max
/100.0);
1506 pa_log_info("Fixing base volume to %0.2f dB", pa_sw_volume_to_dB(u
->sink
->base_volume
));
1508 pa_log_info("No particular base volume set, fixing to 0 dB");
1512 if (!u
->hw_dB_supported
&&
1513 u
->hw_volume_max
- u
->hw_volume_min
< 3) {
1515 pa_log_info("Device doesn't do dB volume and has less than 4 volume levels. Falling back to software volume control.");
1521 u
->mixer_seperate_channels
= pa_alsa_calc_mixer_map(u
->mixer_elem
, &map
, u
->mixer_map
, TRUE
) >= 0;
1523 u
->sink
->get_volume
= sink_get_volume_cb
;
1524 u
->sink
->set_volume
= sink_set_volume_cb
;
1525 u
->sink
->flags
|= PA_SINK_HW_VOLUME_CTRL
| (u
->hw_dB_supported
? PA_SINK_DECIBEL_VOLUME
: 0);
1526 pa_log_info("Using hardware volume control. Hardware dB scale %s.", u
->hw_dB_supported
? "supported" : "not supported");
1529 pa_log_info("Using software volume control.");
1532 if (snd_mixer_selem_has_playback_switch(u
->mixer_elem
)) {
1533 u
->sink
->get_mute
= sink_get_mute_cb
;
1534 u
->sink
->set_mute
= sink_set_mute_cb
;
1535 u
->sink
->flags
|= PA_SINK_HW_MUTE_CTRL
;
1537 pa_log_info("Using software mute control.");
1539 u
->mixer_fdl
= pa_alsa_fdlist_new();
1541 if (pa_alsa_fdlist_set_mixer(u
->mixer_fdl
, u
->mixer_handle
, m
->core
->mainloop
) < 0) {
1542 pa_log("Failed to initialize file descriptor monitoring");
1546 snd_mixer_elem_set_callback(u
->mixer_elem
, mixer_callback
);
1547 snd_mixer_elem_set_callback_private(u
->mixer_elem
, u
);
1549 u
->mixer_fdl
= NULL
;
1551 pa_alsa_dump(u
->pcm_handle
);
1553 if (!(u
->thread
= pa_thread_new(thread_func
, u
))) {
1554 pa_log("Failed to create thread.");
1558 /* Get initial mixer settings */
1559 if (data
.volume_is_set
) {
1560 if (u
->sink
->set_volume
)
1561 u
->sink
->set_volume(u
->sink
);
1563 if (u
->sink
->get_volume
)
1564 u
->sink
->get_volume(u
->sink
);
1567 if (data
.muted_is_set
) {
1568 if (u
->sink
->set_mute
)
1569 u
->sink
->set_mute(u
->sink
);
1571 if (u
->sink
->get_mute
)
1572 u
->sink
->get_mute(u
->sink
);
1575 pa_sink_put(u
->sink
);
1586 static void userdata_free(struct userdata
*u
) {
1590 pa_sink_unlink(u
->sink
);
1593 pa_asyncmsgq_send(u
->thread_mq
.inq
, NULL
, PA_MESSAGE_SHUTDOWN
, NULL
, 0, NULL
);
1594 pa_thread_free(u
->thread
);
1597 pa_thread_mq_done(&u
->thread_mq
);
1600 pa_sink_unref(u
->sink
);
1602 if (u
->memchunk
.memblock
)
1603 pa_memblock_unref(u
->memchunk
.memblock
);
1605 if (u
->alsa_rtpoll_item
)
1606 pa_rtpoll_item_free(u
->alsa_rtpoll_item
);
1609 pa_rtpoll_free(u
->rtpoll
);
1612 pa_alsa_fdlist_free(u
->mixer_fdl
);
1614 if (u
->mixer_handle
)
1615 snd_mixer_close(u
->mixer_handle
);
1617 if (u
->pcm_handle
) {
1618 snd_pcm_drop(u
->pcm_handle
);
1619 snd_pcm_close(u
->pcm_handle
);
1623 pa_smoother_free(u
->smoother
);
1625 pa_xfree(u
->device_name
);
1629 void pa_alsa_sink_free(pa_sink
*s
) {
1632 pa_sink_assert_ref(s
);
1633 pa_assert_se(u
= s
->userdata
);