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 theshold, 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 theshold in the verification time, decrease the watermark */
75 /* Note that TSCHED_WATERMARK_INC_THRESHOLD_USEC == 0 means tht 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, sync_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 noone 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;
995 pa_assert(!u->pcm_handle);
997 pa_log_info("Trying resume...");
999 if ((err = snd_pcm_open(&u->pcm_handle, u->device_name, SND_PCM_STREAM_PLAYBACK,
1001 SND_PCM_NO_AUTO_RESAMPLE|
1002 SND_PCM_NO_AUTO_CHANNELS|
1003 SND_PCM_NO_AUTO_FORMAT)) < 0) {
1004 pa_log("Error opening PCM device %s: %s", u->device_name, pa_alsa_strerror(err));
1008 ss = u->sink->sample_spec;
1009 period_size = u->fragment_size / u->frame_size;
1010 buffer_size = u->hwbuf_size / u->frame_size;
1014 if ((err = pa_alsa_set_hw_params(u->pcm_handle, &ss, &period_size, &buffer_size, 0, &b, &d, TRUE)) < 0) {
1015 pa_log("Failed to set hardware parameters: %s", pa_alsa_strerror(err));
1019 if (b != u->use_mmap || d != u->use_tsched) {
1020 pa_log_warn("Resume failed, couldn't get original access mode.");
1024 if (!pa_sample_spec_equal(&ss, &u->sink->sample_spec)) {
1025 pa_log_warn("Resume failed, couldn't restore original sample settings.");
1029 if (period_size*u->frame_size != u->fragment_size ||
1030 buffer_size*u->frame_size != u->hwbuf_size) {
1031 pa_log_warn("Resume failed, couldn't restore original fragment settings. (Old: %lu/%lu, New %lu/%lu)",
1032 (unsigned long) u->hwbuf_size, (unsigned long) u->fragment_size,
1033 (unsigned long) (buffer_size*u->frame_size), (unsigned long) (period_size*u->frame_size));
1037 if (update_sw_params(u) < 0)
1040 if (build_pollfd(u) < 0)
1044 pa_smoother_reset(u->smoother, pa_rtclock_now(), TRUE);
1045 u->smoother_interval = SMOOTHER_MIN_INTERVAL;
1046 u->last_smoother_update = 0;
1051 pa_log_info("Resumed successfully...");
1056 if (u->pcm_handle) {
1057 snd_pcm_close(u->pcm_handle);
1058 u->pcm_handle = NULL;
1064 /* Called from IO context */
1065 static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
1066 struct userdata *u = PA_SINK(o)->userdata;
1070 case PA_SINK_MESSAGE_FINISH_MOVE:
1071 case PA_SINK_MESSAGE_ADD_INPUT: {
1072 pa_sink_input *i = PA_SINK_INPUT(data);
1075 if (PA_LIKELY(!pa_sink_input_is_passthrough(i)))
1078 u->old_rate = u->sink->sample_spec.rate;
1080 /* Passthrough format, see if we need to reset sink sample rate */
1081 if (u->sink->sample_spec.rate == i->thread_info.sample_spec.rate)
1085 if ((r = suspend(u)) < 0)
1088 u->sink->sample_spec.rate = i->thread_info.sample_spec.rate;
1090 if ((r = unsuspend(u)) < 0)
1096 case PA_SINK_MESSAGE_START_MOVE:
1097 case PA_SINK_MESSAGE_REMOVE_INPUT: {
1098 pa_sink_input *i = PA_SINK_INPUT(data);
1101 if (PA_LIKELY(!pa_sink_input_is_passthrough(i)))
1104 /* Passthrough format, see if we need to reset sink sample rate */
1105 if (u->sink->sample_spec.rate == u->old_rate)
1109 if (PA_SINK_IS_OPENED(u->sink->thread_info.state) && ((r = suspend(u)) < 0))
1112 u->sink->sample_spec.rate = u->old_rate;
1114 if (PA_SINK_IS_OPENED(u->sink->thread_info.state) && ((r = unsuspend(u)) < 0))
1120 case PA_SINK_MESSAGE_GET_LATENCY: {
1124 r = sink_get_latency(u);
1126 *((pa_usec_t*) data) = r;
1131 case PA_SINK_MESSAGE_SET_STATE:
1133 switch ((pa_sink_state_t) PA_PTR_TO_UINT(data)) {
1135 case PA_SINK_SUSPENDED: {
1138 pa_assert(PA_SINK_IS_OPENED(u->sink->thread_info.state));
1140 if ((r = suspend(u)) < 0)
1147 case PA_SINK_RUNNING: {
1150 if (u->sink->thread_info.state == PA_SINK_INIT) {
1151 if (build_pollfd(u) < 0)
1155 if (u->sink->thread_info.state == PA_SINK_SUSPENDED) {
1156 if ((r = unsuspend(u)) < 0)
1163 case PA_SINK_UNLINKED:
1165 case PA_SINK_INVALID_STATE:
1172 return pa_sink_process_msg(o, code, data, offset, chunk);
1175 /* Called from main context */
1176 static int sink_set_state_cb(pa_sink *s, pa_sink_state_t new_state) {
1177 pa_sink_state_t old_state;
1180 pa_sink_assert_ref(s);
1181 pa_assert_se(u = s->userdata);
1183 old_state = pa_sink_get_state(u->sink);
1185 if (PA_SINK_IS_OPENED(old_state) && new_state == PA_SINK_SUSPENDED)
1187 else if (old_state == PA_SINK_SUSPENDED && PA_SINK_IS_OPENED(new_state))
1188 if (reserve_init(u, u->device_name) < 0)
1189 return -PA_ERR_BUSY;
1194 static int ctl_mixer_callback(snd_mixer_elem_t *elem, unsigned int mask) {
1195 struct userdata *u = snd_mixer_elem_get_callback_private(elem);
1198 pa_assert(u->mixer_handle);
1200 if (mask == SND_CTL_EVENT_MASK_REMOVE)
1203 if (u->sink->suspend_cause & PA_SUSPEND_SESSION)
1206 if (mask & SND_CTL_EVENT_MASK_VALUE) {
1207 pa_sink_get_volume(u->sink, TRUE);
1208 pa_sink_get_mute(u->sink, TRUE);
1214 static int io_mixer_callback(snd_mixer_elem_t *elem, unsigned int mask) {
1215 struct userdata *u = snd_mixer_elem_get_callback_private(elem);
1218 pa_assert(u->mixer_handle);
1220 if (mask == SND_CTL_EVENT_MASK_REMOVE)
1223 if (u->sink->suspend_cause & PA_SUSPEND_SESSION)
1226 if (mask & SND_CTL_EVENT_MASK_VALUE)
1227 pa_sink_update_volume_and_mute(u->sink);
1232 static void sink_get_volume_cb(pa_sink *s) {
1233 struct userdata *u = s->userdata;
1235 char vol_str_pcnt[PA_CVOLUME_SNPRINT_MAX];
1238 pa_assert(u->mixer_path);
1239 pa_assert(u->mixer_handle);
1241 if (pa_alsa_path_get_volume(u->mixer_path, u->mixer_handle, &s->channel_map, &r) < 0)
1244 /* Shift down by the base volume, so that 0dB becomes maximum volume */
1245 pa_sw_cvolume_multiply_scalar(&r, &r, s->base_volume);
1247 pa_log_debug("Read hardware volume: %s", pa_cvolume_snprint(vol_str_pcnt, sizeof(vol_str_pcnt), &r));
1249 if (u->mixer_path->has_dB) {
1250 char vol_str_db[PA_SW_CVOLUME_SNPRINT_DB_MAX];
1252 pa_log_debug(" in dB: %s", pa_sw_cvolume_snprint_dB(vol_str_db, sizeof(vol_str_db), &r));
1255 if (pa_cvolume_equal(&u->hardware_volume, &r))
1258 s->real_volume = u->hardware_volume = r;
1260 /* Hmm, so the hardware volume changed, let's reset our software volume */
1261 if (u->mixer_path->has_dB)
1262 pa_sink_set_soft_volume(s, NULL);
1265 static void sink_set_volume_cb(pa_sink *s) {
1266 struct userdata *u = s->userdata;
1268 char vol_str_pcnt[PA_CVOLUME_SNPRINT_MAX];
1269 pa_bool_t sync_volume = !!(s->flags & PA_SINK_SYNC_VOLUME);
1272 pa_assert(u->mixer_path);
1273 pa_assert(u->mixer_handle);
1275 /* Shift up by the base volume */
1276 pa_sw_cvolume_divide_scalar(&r, &s->real_volume, s->base_volume);
1278 if (pa_alsa_path_set_volume(u->mixer_path, u->mixer_handle, &s->channel_map, &r, sync_volume, !sync_volume) < 0)
1281 /* Shift down by the base volume, so that 0dB becomes maximum volume */
1282 pa_sw_cvolume_multiply_scalar(&r, &r, s->base_volume);
1284 u->hardware_volume = r;
1286 if (u->mixer_path->has_dB) {
1287 pa_cvolume new_soft_volume;
1288 pa_bool_t accurate_enough;
1289 char vol_str_db[PA_SW_CVOLUME_SNPRINT_DB_MAX];
1291 /* Match exactly what the user requested by software */
1292 pa_sw_cvolume_divide(&new_soft_volume, &s->real_volume, &u->hardware_volume);
1294 /* If the adjustment to do in software is only minimal we
1295 * can skip it. That saves us CPU at the expense of a bit of
1298 (pa_cvolume_min(&new_soft_volume) >= (PA_VOLUME_NORM - VOLUME_ACCURACY)) &&
1299 (pa_cvolume_max(&new_soft_volume) <= (PA_VOLUME_NORM + VOLUME_ACCURACY));
1301 pa_log_debug("Requested volume: %s", pa_cvolume_snprint(vol_str_pcnt, sizeof(vol_str_pcnt), &s->real_volume));
1302 pa_log_debug(" in dB: %s", pa_sw_cvolume_snprint_dB(vol_str_db, sizeof(vol_str_db), &s->real_volume));
1303 pa_log_debug("Got hardware volume: %s", pa_cvolume_snprint(vol_str_pcnt, sizeof(vol_str_pcnt), &u->hardware_volume));
1304 pa_log_debug(" in dB: %s", pa_sw_cvolume_snprint_dB(vol_str_db, sizeof(vol_str_db), &u->hardware_volume));
1305 pa_log_debug("Calculated software volume: %s (accurate-enough=%s)",
1306 pa_cvolume_snprint(vol_str_pcnt, sizeof(vol_str_pcnt), &new_soft_volume),
1307 pa_yes_no(accurate_enough));
1308 pa_log_debug(" in dB: %s", pa_sw_cvolume_snprint_dB(vol_str_db, sizeof(vol_str_db), &new_soft_volume));
1310 if (!accurate_enough)
1311 s->soft_volume = new_soft_volume;
1314 pa_log_debug("Wrote hardware volume: %s", pa_cvolume_snprint(vol_str_pcnt, sizeof(vol_str_pcnt), &r));
1316 /* We can't match exactly what the user requested, hence let's
1317 * at least tell the user about it */
1323 static void sink_write_volume_cb(pa_sink *s) {
1324 struct userdata *u = s->userdata;
1325 pa_cvolume hw_vol = s->thread_info.current_hw_volume;
1328 pa_assert(u->mixer_path);
1329 pa_assert(u->mixer_handle);
1330 pa_assert(s->flags & PA_SINK_SYNC_VOLUME);
1332 /* Shift up by the base volume */
1333 pa_sw_cvolume_divide_scalar(&hw_vol, &hw_vol, s->base_volume);
1335 if (pa_alsa_path_set_volume(u->mixer_path, u->mixer_handle, &s->channel_map, &hw_vol, TRUE, TRUE) < 0)
1336 pa_log_error("Writing HW volume failed");
1339 pa_bool_t accurate_enough;
1341 /* Shift down by the base volume, so that 0dB becomes maximum volume */
1342 pa_sw_cvolume_multiply_scalar(&hw_vol, &hw_vol, s->base_volume);
1344 pa_sw_cvolume_divide(&tmp_vol, &hw_vol, &s->thread_info.current_hw_volume);
1346 (pa_cvolume_min(&tmp_vol) >= (PA_VOLUME_NORM - VOLUME_ACCURACY)) &&
1347 (pa_cvolume_max(&tmp_vol) <= (PA_VOLUME_NORM + VOLUME_ACCURACY));
1349 if (!accurate_enough) {
1351 char db[2][PA_SW_CVOLUME_SNPRINT_DB_MAX];
1352 char pcnt[2][PA_CVOLUME_SNPRINT_MAX];
1355 pa_log_debug("Written HW volume did not match with the request: %s (request) != %s",
1356 pa_cvolume_snprint(vol.pcnt[0], sizeof(vol.pcnt[0]), &s->thread_info.current_hw_volume),
1357 pa_cvolume_snprint(vol.pcnt[1], sizeof(vol.pcnt[1]), &hw_vol));
1358 pa_log_debug(" in dB: %s (request) != %s",
1359 pa_sw_cvolume_snprint_dB(vol.db[0], sizeof(vol.db[0]), &s->thread_info.current_hw_volume),
1360 pa_sw_cvolume_snprint_dB(vol.db[1], sizeof(vol.db[1]), &hw_vol));
1365 static void sink_get_mute_cb(pa_sink *s) {
1366 struct userdata *u = s->userdata;
1370 pa_assert(u->mixer_path);
1371 pa_assert(u->mixer_handle);
1373 if (pa_alsa_path_get_mute(u->mixer_path, u->mixer_handle, &b) < 0)
1379 static void sink_set_mute_cb(pa_sink *s) {
1380 struct userdata *u = s->userdata;
1383 pa_assert(u->mixer_path);
1384 pa_assert(u->mixer_handle);
1386 pa_alsa_path_set_mute(u->mixer_path, u->mixer_handle, s->muted);
1389 static void mixer_volume_init(struct userdata *u) {
1392 if (!u->mixer_path->has_volume) {
1393 pa_sink_set_write_volume_callback(u->sink, NULL);
1394 pa_sink_set_get_volume_callback(u->sink, NULL);
1395 pa_sink_set_set_volume_callback(u->sink, NULL);
1397 pa_log_info("Driver does not support hardware volume control, falling back to software volume control.");
1399 pa_sink_set_get_volume_callback(u->sink, sink_get_volume_cb);
1400 pa_sink_set_set_volume_callback(u->sink, sink_set_volume_cb);
1402 if (u->mixer_path->has_dB && u->sync_volume) {
1403 pa_sink_set_write_volume_callback(u->sink, sink_write_volume_cb);
1404 pa_log_info("Successfully enabled synchronous volume.");
1406 pa_sink_set_write_volume_callback(u->sink, NULL);
1408 if (u->mixer_path->has_dB) {
1409 pa_sink_enable_decibel_volume(u->sink, TRUE);
1410 pa_log_info("Hardware volume ranges from %0.2f dB to %0.2f dB.", u->mixer_path->min_dB, u->mixer_path->max_dB);
1412 u->sink->base_volume = pa_sw_volume_from_dB(-u->mixer_path->max_dB);
1413 u->sink->n_volume_steps = PA_VOLUME_NORM+1;
1415 pa_log_info("Fixing base volume to %0.2f dB", pa_sw_volume_to_dB(u->sink->base_volume));
1417 pa_sink_enable_decibel_volume(u->sink, FALSE);
1418 pa_log_info("Hardware volume ranges from %li to %li.", u->mixer_path->min_volume, u->mixer_path->max_volume);
1420 u->sink->base_volume = PA_VOLUME_NORM;
1421 u->sink->n_volume_steps = u->mixer_path->max_volume - u->mixer_path->min_volume + 1;
1424 pa_log_info("Using hardware volume control. Hardware dB scale %s.", u->mixer_path->has_dB ? "supported" : "not supported");
1427 if (!u->mixer_path->has_mute) {
1428 pa_sink_set_get_mute_callback(u->sink, NULL);
1429 pa_sink_set_set_mute_callback(u->sink, NULL);
1430 pa_log_info("Driver does not support hardware mute control, falling back to software mute control.");
1432 pa_sink_set_get_mute_callback(u->sink, sink_get_mute_cb);
1433 pa_sink_set_set_mute_callback(u->sink, sink_set_mute_cb);
1434 pa_log_info("Using hardware mute control.");
1438 static int sink_set_port_cb(pa_sink *s, pa_device_port *p) {
1439 struct userdata *u = s->userdata;
1440 pa_alsa_port_data *data;
1444 pa_assert(u->mixer_handle);
1446 data = PA_DEVICE_PORT_DATA(p);
1448 pa_assert_se(u->mixer_path = data->path);
1449 pa_alsa_path_select(u->mixer_path, u->mixer_handle);
1451 mixer_volume_init(u);
1454 pa_alsa_setting_select(data->setting, u->mixer_handle);
1464 static void sink_update_requested_latency_cb(pa_sink *s) {
1465 struct userdata *u = s->userdata;
1468 pa_assert(u->use_tsched); /* only when timer scheduling is used
1469 * we can dynamically adjust the
1475 before = u->hwbuf_unused;
1476 update_sw_params(u);
1478 /* Let's check whether we now use only a smaller part of the
1479 buffer then before. If so, we need to make sure that subsequent
1480 rewinds are relative to the new maximum fill level and not to the
1481 current fill level. Thus, let's do a full rewind once, to clear
1484 if (u->hwbuf_unused > before) {
1485 pa_log_debug("Requesting rewind due to latency change.");
1486 pa_sink_request_rewind(s, (size_t) -1);
1490 static pa_idxset* sink_get_formats(pa_sink *s) {
1491 struct userdata *u = s->userdata;
1492 pa_idxset *ret = pa_idxset_new(NULL, NULL);
1498 PA_IDXSET_FOREACH(f, u->formats, idx) {
1499 pa_idxset_put(ret, pa_format_info_copy(f), NULL);
1505 static pa_bool_t sink_set_formats(pa_sink *s, pa_idxset *formats) {
1506 struct userdata *u = s->userdata;
1512 /* FIXME: also validate sample rates against what the device supports */
1513 PA_IDXSET_FOREACH(f, formats, idx) {
1514 if (is_iec958(u) && f->encoding == PA_ENCODING_EAC3_IEC61937)
1515 /* EAC3 cannot be sent over over S/PDIF */
1519 pa_idxset_free(u->formats, (pa_free2_cb_t) pa_format_info_free2, NULL);
1520 u->formats = pa_idxset_new(NULL, NULL);
1522 PA_IDXSET_FOREACH(f, formats, idx) {
1523 pa_idxset_put(u->formats, pa_format_info_copy(f), NULL);
1529 static int process_rewind(struct userdata *u) {
1530 snd_pcm_sframes_t unused;
1531 size_t rewind_nbytes, unused_nbytes, limit_nbytes;
1534 /* Figure out how much we shall rewind and reset the counter */
1535 rewind_nbytes = u->sink->thread_info.rewind_nbytes;
1537 pa_log_debug("Requested to rewind %lu bytes.", (unsigned long) rewind_nbytes);
1539 if (PA_UNLIKELY((unused = pa_alsa_safe_avail(u->pcm_handle, u->hwbuf_size, &u->sink->sample_spec)) < 0)) {
1540 pa_log("snd_pcm_avail() failed: %s", pa_alsa_strerror((int) unused));
1544 unused_nbytes = (size_t) unused * u->frame_size;
1546 /* make sure rewind doesn't go too far, can cause issues with DMAs */
1547 unused_nbytes += u->rewind_safeguard;
1549 if (u->hwbuf_size > unused_nbytes)
1550 limit_nbytes = u->hwbuf_size - unused_nbytes;
1554 if (rewind_nbytes > limit_nbytes)
1555 rewind_nbytes = limit_nbytes;
1557 if (rewind_nbytes > 0) {
1558 snd_pcm_sframes_t in_frames, out_frames;
1560 pa_log_debug("Limited to %lu bytes.", (unsigned long) rewind_nbytes);
1562 in_frames = (snd_pcm_sframes_t) (rewind_nbytes / u->frame_size);
1563 pa_log_debug("before: %lu", (unsigned long) in_frames);
1564 if ((out_frames = snd_pcm_rewind(u->pcm_handle, (snd_pcm_uframes_t) in_frames)) < 0) {
1565 pa_log("snd_pcm_rewind() failed: %s", pa_alsa_strerror((int) out_frames));
1566 if (try_recover(u, "process_rewind", out_frames) < 0)
1571 pa_log_debug("after: %lu", (unsigned long) out_frames);
1573 rewind_nbytes = (size_t) out_frames * u->frame_size;
1575 if (rewind_nbytes <= 0)
1576 pa_log_info("Tried rewind, but was apparently not possible.");
1578 u->write_count -= rewind_nbytes;
1579 pa_log_debug("Rewound %lu bytes.", (unsigned long) rewind_nbytes);
1580 pa_sink_process_rewind(u->sink, rewind_nbytes);
1582 u->after_rewind = TRUE;
1586 pa_log_debug("Mhmm, actually there is nothing to rewind.");
1588 pa_sink_process_rewind(u->sink, 0);
1592 static void thread_func(void *userdata) {
1593 struct userdata *u = userdata;
1594 unsigned short revents = 0;
1598 pa_log_debug("Thread starting up");
1600 if (u->core->realtime_scheduling)
1601 pa_make_realtime(u->core->realtime_priority);
1603 pa_thread_mq_install(&u->thread_mq);
1607 pa_usec_t rtpoll_sleep = 0;
1610 pa_log_debug("Loop");
1613 /* Render some data and write it to the dsp */
1614 if (PA_SINK_IS_OPENED(u->sink->thread_info.state)) {
1616 pa_usec_t sleep_usec = 0;
1617 pa_bool_t on_timeout = pa_rtpoll_timer_elapsed(u->rtpoll);
1619 if (PA_UNLIKELY(u->sink->thread_info.rewind_requested))
1620 if (process_rewind(u) < 0)
1624 work_done = mmap_write(u, &sleep_usec, revents & POLLOUT, on_timeout);
1626 work_done = unix_write(u, &sleep_usec, revents & POLLOUT, on_timeout);
1631 /* pa_log_debug("work_done = %i", work_done); */
1636 pa_log_info("Starting playback.");
1637 snd_pcm_start(u->pcm_handle);
1639 pa_smoother_resume(u->smoother, pa_rtclock_now(), TRUE);
1647 if (u->use_tsched) {
1650 if (u->since_start <= u->hwbuf_size) {
1652 /* USB devices on ALSA seem to hit a buffer
1653 * underrun during the first iterations much
1654 * quicker then we calculate here, probably due to
1655 * the transport latency. To accommodate for that
1656 * we artificially decrease the sleep time until
1657 * we have filled the buffer at least once
1660 if (pa_log_ratelimit(PA_LOG_DEBUG))
1661 pa_log_debug("Cutting sleep time for the initial iterations by half.");
1665 /* OK, the playback buffer is now full, let's
1666 * calculate when to wake up next */
1667 /* pa_log_debug("Waking up in %0.2fms (sound card clock).", (double) sleep_usec / PA_USEC_PER_MSEC); */
1669 /* Convert from the sound card time domain to the
1670 * system time domain */
1671 cusec = pa_smoother_translate(u->smoother, pa_rtclock_now(), sleep_usec);
1673 /* pa_log_debug("Waking up in %0.2fms (system clock).", (double) cusec / PA_USEC_PER_MSEC); */
1675 /* We don't trust the conversion, so we wake up whatever comes first */
1676 rtpoll_sleep = PA_MIN(sleep_usec, cusec);
1679 u->after_rewind = FALSE;
1683 if (u->sink->flags & PA_SINK_SYNC_VOLUME) {
1684 pa_usec_t volume_sleep;
1685 pa_sink_volume_change_apply(u->sink, &volume_sleep);
1686 if (volume_sleep > 0)
1687 rtpoll_sleep = PA_MIN(volume_sleep, rtpoll_sleep);
1690 if (rtpoll_sleep > 0)
1691 pa_rtpoll_set_timer_relative(u->rtpoll, rtpoll_sleep);
1693 pa_rtpoll_set_timer_disabled(u->rtpoll);
1695 /* Hmm, nothing to do. Let's sleep */
1696 if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0)
1699 if (u->sink->flags & PA_SINK_SYNC_VOLUME)
1700 pa_sink_volume_change_apply(u->sink, NULL);
1705 /* Tell ALSA about this and process its response */
1706 if (PA_SINK_IS_OPENED(u->sink->thread_info.state)) {
1707 struct pollfd *pollfd;
1711 pollfd = pa_rtpoll_item_get_pollfd(u->alsa_rtpoll_item, &n);
1713 if ((err = snd_pcm_poll_descriptors_revents(u->pcm_handle, pollfd, n, &revents)) < 0) {
1714 pa_log("snd_pcm_poll_descriptors_revents() failed: %s", pa_alsa_strerror(err));
1718 if (revents & ~POLLOUT) {
1719 if (pa_alsa_recover_from_poll(u->pcm_handle, revents) < 0)
1725 } else if (revents && u->use_tsched && pa_log_ratelimit(PA_LOG_DEBUG))
1726 pa_log_debug("Wakeup from ALSA!");
1733 /* If this was no regular exit from the loop we have to continue
1734 * processing messages until we received PA_MESSAGE_SHUTDOWN */
1735 pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
1736 pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
1739 pa_log_debug("Thread shutting down");
1742 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) {
1748 pa_assert(device_name);
1750 if ((n = pa_modargs_get_value(ma, "sink_name", NULL))) {
1751 pa_sink_new_data_set_name(data, n);
1752 data->namereg_fail = TRUE;
1756 if ((n = pa_modargs_get_value(ma, "name", NULL)))
1757 data->namereg_fail = TRUE;
1759 n = device_id ? device_id : device_name;
1760 data->namereg_fail = FALSE;
1764 t = pa_sprintf_malloc("alsa_output.%s.%s", n, mapping->name);
1766 t = pa_sprintf_malloc("alsa_output.%s", n);
1768 pa_sink_new_data_set_name(data, t);
1772 static void find_mixer(struct userdata *u, pa_alsa_mapping *mapping, const char *element, pa_bool_t ignore_dB) {
1774 if (!mapping && !element)
1777 if (!(u->mixer_handle = pa_alsa_open_mixer_for_pcm(u->pcm_handle, &u->control_device))) {
1778 pa_log_info("Failed to find a working mixer device.");
1784 if (!(u->mixer_path = pa_alsa_path_synthesize(element, PA_ALSA_DIRECTION_OUTPUT)))
1787 if (pa_alsa_path_probe(u->mixer_path, u->mixer_handle, ignore_dB) < 0)
1790 pa_log_debug("Probed mixer path %s:", u->mixer_path->name);
1791 pa_alsa_path_dump(u->mixer_path);
1794 if (!(u->mixer_path_set = pa_alsa_path_set_new(mapping, PA_ALSA_DIRECTION_OUTPUT)))
1797 pa_alsa_path_set_probe(u->mixer_path_set, u->mixer_handle, ignore_dB);
1804 if (u->mixer_path_set) {
1805 pa_alsa_path_set_free(u->mixer_path_set);
1806 u->mixer_path_set = NULL;
1807 } else if (u->mixer_path) {
1808 pa_alsa_path_free(u->mixer_path);
1809 u->mixer_path = NULL;
1812 if (u->mixer_handle) {
1813 snd_mixer_close(u->mixer_handle);
1814 u->mixer_handle = NULL;
1819 static int setup_mixer(struct userdata *u, pa_bool_t ignore_dB) {
1820 pa_bool_t need_mixer_callback = FALSE;
1824 if (!u->mixer_handle)
1827 if (u->sink->active_port) {
1828 pa_alsa_port_data *data;
1830 /* We have a list of supported paths, so let's activate the
1831 * one that has been chosen as active */
1833 data = PA_DEVICE_PORT_DATA(u->sink->active_port);
1834 u->mixer_path = data->path;
1836 pa_alsa_path_select(data->path, u->mixer_handle);
1839 pa_alsa_setting_select(data->setting, u->mixer_handle);
1843 if (!u->mixer_path && u->mixer_path_set)
1844 u->mixer_path = u->mixer_path_set->paths;
1846 if (u->mixer_path) {
1847 /* Hmm, we have only a single path, then let's activate it */
1849 pa_alsa_path_select(u->mixer_path, u->mixer_handle);
1851 if (u->mixer_path->settings)
1852 pa_alsa_setting_select(u->mixer_path->settings, u->mixer_handle);
1857 mixer_volume_init(u);
1859 /* Will we need to register callbacks? */
1860 if (u->mixer_path_set && u->mixer_path_set->paths) {
1863 PA_LLIST_FOREACH(p, u->mixer_path_set->paths) {
1864 if (p->has_volume || p->has_mute)
1865 need_mixer_callback = TRUE;
1868 else if (u->mixer_path)
1869 need_mixer_callback = u->mixer_path->has_volume || u->mixer_path->has_mute;
1871 if (need_mixer_callback) {
1872 int (*mixer_callback)(snd_mixer_elem_t *, unsigned int);
1873 if (u->sink->flags & PA_SINK_SYNC_VOLUME) {
1874 u->mixer_pd = pa_alsa_mixer_pdata_new();
1875 mixer_callback = io_mixer_callback;
1877 if (pa_alsa_set_mixer_rtpoll(u->mixer_pd, u->mixer_handle, u->rtpoll) < 0) {
1878 pa_log("Failed to initialize file descriptor monitoring");
1882 u->mixer_fdl = pa_alsa_fdlist_new();
1883 mixer_callback = ctl_mixer_callback;
1885 if (pa_alsa_fdlist_set_mixer(u->mixer_fdl, u->mixer_handle, u->core->mainloop) < 0) {
1886 pa_log("Failed to initialize file descriptor monitoring");
1891 if (u->mixer_path_set)
1892 pa_alsa_path_set_set_callback(u->mixer_path_set, u->mixer_handle, mixer_callback, u);
1894 pa_alsa_path_set_callback(u->mixer_path, u->mixer_handle, mixer_callback, u);
1900 pa_sink *pa_alsa_sink_new(pa_module *m, pa_modargs *ma, const char*driver, pa_card *card, pa_alsa_mapping *mapping) {
1902 struct userdata *u = NULL;
1903 const char *dev_id = NULL;
1904 pa_sample_spec ss, requested_ss;
1906 uint32_t nfrags, frag_size, buffer_size, tsched_size, tsched_watermark, rewind_safeguard;
1907 snd_pcm_uframes_t period_frames, buffer_frames, tsched_frames;
1909 pa_bool_t use_mmap = TRUE, b, use_tsched = TRUE, d, ignore_dB = FALSE, namereg_fail = FALSE, sync_volume = FALSE, set_formats = FALSE;
1910 pa_sink_new_data data;
1911 pa_alsa_profile_set *profile_set = NULL;
1916 ss = m->core->default_sample_spec;
1917 map = m->core->default_channel_map;
1918 if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_ALSA) < 0) {
1919 pa_log("Failed to parse sample specification and channel map");
1924 frame_size = pa_frame_size(&ss);
1926 nfrags = m->core->default_n_fragments;
1927 frag_size = (uint32_t) pa_usec_to_bytes(m->core->default_fragment_size_msec*PA_USEC_PER_MSEC, &ss);
1929 frag_size = (uint32_t) frame_size;
1930 tsched_size = (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_BUFFER_USEC, &ss);
1931 tsched_watermark = (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_WATERMARK_USEC, &ss);
1933 if (pa_modargs_get_value_u32(ma, "fragments", &nfrags) < 0 ||
1934 pa_modargs_get_value_u32(ma, "fragment_size", &frag_size) < 0 ||
1935 pa_modargs_get_value_u32(ma, "tsched_buffer_size", &tsched_size) < 0 ||
1936 pa_modargs_get_value_u32(ma, "tsched_buffer_watermark", &tsched_watermark) < 0) {
1937 pa_log("Failed to parse buffer metrics");
1941 buffer_size = nfrags * frag_size;
1943 period_frames = frag_size/frame_size;
1944 buffer_frames = buffer_size/frame_size;
1945 tsched_frames = tsched_size/frame_size;
1947 if (pa_modargs_get_value_boolean(ma, "mmap", &use_mmap) < 0) {
1948 pa_log("Failed to parse mmap argument.");
1952 if (pa_modargs_get_value_boolean(ma, "tsched", &use_tsched) < 0) {
1953 pa_log("Failed to parse tsched argument.");
1957 if (pa_modargs_get_value_boolean(ma, "ignore_dB", &ignore_dB) < 0) {
1958 pa_log("Failed to parse ignore_dB argument.");
1962 rewind_safeguard = PA_MAX(DEFAULT_REWIND_SAFEGUARD_BYTES, pa_usec_to_bytes(DEFAULT_REWIND_SAFEGUARD_USEC, &ss));
1963 if (pa_modargs_get_value_u32(ma, "rewind_safeguard", &rewind_safeguard) < 0) {
1964 pa_log("Failed to parse rewind_safeguard argument");
1968 sync_volume = m->core->sync_volume;
1969 if (pa_modargs_get_value_boolean(ma, "sync_volume", &sync_volume) < 0) {
1970 pa_log("Failed to parse sync_volume argument.");
1974 use_tsched = pa_alsa_may_tsched(use_tsched);
1976 u = pa_xnew0(struct userdata, 1);
1979 u->use_mmap = use_mmap;
1980 u->use_tsched = use_tsched;
1981 u->sync_volume = sync_volume;
1983 u->rewind_safeguard = rewind_safeguard;
1984 u->rtpoll = pa_rtpoll_new();
1985 pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll);
1987 u->smoother = pa_smoother_new(
1988 SMOOTHER_ADJUST_USEC,
1989 SMOOTHER_WINDOW_USEC,
1995 u->smoother_interval = SMOOTHER_MIN_INTERVAL;
1997 dev_id = pa_modargs_get_value(
1999 pa_modargs_get_value(ma, "device", DEFAULT_DEVICE));
2001 if (reserve_init(u, dev_id) < 0)
2004 if (reserve_monitor_init(u, dev_id) < 0)
2012 if (!(dev_id = pa_modargs_get_value(ma, "device_id", NULL))) {
2013 pa_log("device_id= not set");
2017 if (!(u->pcm_handle = pa_alsa_open_by_device_id_mapping(
2021 SND_PCM_STREAM_PLAYBACK,
2022 &period_frames, &buffer_frames, tsched_frames,
2026 } else if ((dev_id = pa_modargs_get_value(ma, "device_id", NULL))) {
2028 if (!(profile_set = pa_alsa_profile_set_new(NULL, &map)))
2031 if (!(u->pcm_handle = pa_alsa_open_by_device_id_auto(
2035 SND_PCM_STREAM_PLAYBACK,
2036 &period_frames, &buffer_frames, tsched_frames,
2037 &b, &d, profile_set, &mapping)))
2042 if (!(u->pcm_handle = pa_alsa_open_by_device_string(
2043 pa_modargs_get_value(ma, "device", DEFAULT_DEVICE),
2046 SND_PCM_STREAM_PLAYBACK,
2047 &period_frames, &buffer_frames, tsched_frames,
2052 pa_assert(u->device_name);
2053 pa_log_info("Successfully opened device %s.", u->device_name);
2055 if (pa_alsa_pcm_is_modem(u->pcm_handle)) {
2056 pa_log_notice("Device %s is modem, refusing further initialization.", u->device_name);
2061 pa_log_info("Selected mapping '%s' (%s).", mapping->description, mapping->name);
2063 if (use_mmap && !b) {
2064 pa_log_info("Device doesn't support mmap(), falling back to UNIX read/write mode.");
2065 u->use_mmap = use_mmap = FALSE;
2068 if (use_tsched && (!b || !d)) {
2069 pa_log_info("Cannot enable timer-based scheduling, falling back to sound IRQ scheduling.");
2070 u->use_tsched = use_tsched = FALSE;
2074 pa_log_info("Successfully enabled mmap() mode.");
2077 pa_log_info("Successfully enabled timer-based scheduling mode.");
2079 if (is_iec958(u) || is_hdmi(u))
2082 /* ALSA might tweak the sample spec, so recalculate the frame size */
2083 frame_size = pa_frame_size(&ss);
2085 find_mixer(u, mapping, pa_modargs_get_value(ma, "control", NULL), ignore_dB);
2087 pa_sink_new_data_init(&data);
2088 data.driver = driver;
2091 set_sink_name(&data, ma, dev_id, u->device_name, mapping);
2093 /* We need to give pa_modargs_get_value_boolean() a pointer to a local
2094 * variable instead of using &data.namereg_fail directly, because
2095 * data.namereg_fail is a bitfield and taking the address of a bitfield
2096 * variable is impossible. */
2097 namereg_fail = data.namereg_fail;
2098 if (pa_modargs_get_value_boolean(ma, "namereg_fail", &namereg_fail) < 0) {
2099 pa_log("Failed to parse boolean argument namereg_fail.");
2100 pa_sink_new_data_done(&data);
2103 data.namereg_fail = namereg_fail;
2105 pa_sink_new_data_set_sample_spec(&data, &ss);
2106 pa_sink_new_data_set_channel_map(&data, &map);
2108 pa_alsa_init_proplist_pcm(m->core, data.proplist, u->pcm_handle);
2109 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, u->device_name);
2110 pa_proplist_setf(data.proplist, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE, "%lu", (unsigned long) (buffer_frames * frame_size));
2111 pa_proplist_setf(data.proplist, PA_PROP_DEVICE_BUFFERING_FRAGMENT_SIZE, "%lu", (unsigned long) (period_frames * frame_size));
2112 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_ACCESS_MODE, u->use_tsched ? "mmap+timer" : (u->use_mmap ? "mmap" : "serial"));
2115 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_PROFILE_NAME, mapping->name);
2116 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_PROFILE_DESCRIPTION, mapping->description);
2119 pa_alsa_init_description(data.proplist);
2121 if (u->control_device)
2122 pa_alsa_init_proplist_ctl(data.proplist, u->control_device);
2124 if (pa_modargs_get_proplist(ma, "sink_properties", data.proplist, PA_UPDATE_REPLACE) < 0) {
2125 pa_log("Invalid properties");
2126 pa_sink_new_data_done(&data);
2130 if (u->mixer_path_set)
2131 pa_alsa_add_ports(&data.ports, u->mixer_path_set);
2133 u->sink = pa_sink_new(m->core, &data, PA_SINK_HARDWARE | PA_SINK_LATENCY | (u->use_tsched ? PA_SINK_DYNAMIC_LATENCY : 0) |
2134 (set_formats ? PA_SINK_SET_FORMATS : 0));
2135 pa_sink_new_data_done(&data);
2138 pa_log("Failed to create sink object");
2142 if (pa_modargs_get_value_u32(ma, "sync_volume_safety_margin",
2143 &u->sink->thread_info.volume_change_safety_margin) < 0) {
2144 pa_log("Failed to parse sync_volume_safety_margin parameter");
2148 if (pa_modargs_get_value_s32(ma, "sync_volume_extra_delay",
2149 &u->sink->thread_info.volume_change_extra_delay) < 0) {
2150 pa_log("Failed to parse sync_volume_extra_delay parameter");
2154 u->sink->parent.process_msg = sink_process_msg;
2156 u->sink->update_requested_latency = sink_update_requested_latency_cb;
2157 u->sink->set_state = sink_set_state_cb;
2158 u->sink->set_port = sink_set_port_cb;
2159 u->sink->userdata = u;
2161 pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
2162 pa_sink_set_rtpoll(u->sink, u->rtpoll);
2164 u->frame_size = frame_size;
2165 u->fragment_size = frag_size = (size_t) (period_frames * frame_size);
2166 u->hwbuf_size = buffer_size = (size_t) (buffer_frames * frame_size);
2167 pa_cvolume_mute(&u->hardware_volume, u->sink->sample_spec.channels);
2169 pa_log_info("Using %0.1f fragments of size %lu bytes (%0.2fms), buffer size is %lu bytes (%0.2fms)",
2170 (double) u->hwbuf_size / (double) u->fragment_size,
2171 (long unsigned) u->fragment_size,
2172 (double) pa_bytes_to_usec(u->fragment_size, &ss) / PA_USEC_PER_MSEC,
2173 (long unsigned) u->hwbuf_size,
2174 (double) pa_bytes_to_usec(u->hwbuf_size, &ss) / PA_USEC_PER_MSEC);
2176 pa_sink_set_max_request(u->sink, u->hwbuf_size);
2177 if (pa_alsa_pcm_is_hw(u->pcm_handle))
2178 pa_sink_set_max_rewind(u->sink, u->hwbuf_size);
2180 pa_log_info("Disabling rewind for device %s", u->device_name);
2181 pa_sink_set_max_rewind(u->sink, 0);
2184 if (u->use_tsched) {
2185 u->tsched_watermark = pa_usec_to_bytes_round_up(pa_bytes_to_usec_round_up(tsched_watermark, &requested_ss), &u->sink->sample_spec);
2187 u->watermark_inc_step = pa_usec_to_bytes(TSCHED_WATERMARK_INC_STEP_USEC, &u->sink->sample_spec);
2188 u->watermark_dec_step = pa_usec_to_bytes(TSCHED_WATERMARK_DEC_STEP_USEC, &u->sink->sample_spec);
2190 u->watermark_inc_threshold = pa_usec_to_bytes_round_up(TSCHED_WATERMARK_INC_THRESHOLD_USEC, &u->sink->sample_spec);
2191 u->watermark_dec_threshold = pa_usec_to_bytes_round_up(TSCHED_WATERMARK_DEC_THRESHOLD_USEC, &u->sink->sample_spec);
2193 fix_min_sleep_wakeup(u);
2194 fix_tsched_watermark(u);
2196 pa_sink_set_latency_range(u->sink,
2198 pa_bytes_to_usec(u->hwbuf_size, &ss));
2200 pa_log_info("Time scheduling watermark is %0.2fms",
2201 (double) pa_bytes_to_usec(u->tsched_watermark, &ss) / PA_USEC_PER_MSEC);
2203 pa_sink_set_fixed_latency(u->sink, pa_bytes_to_usec(u->hwbuf_size, &ss));
2207 if (update_sw_params(u) < 0)
2210 if (setup_mixer(u, ignore_dB) < 0)
2213 pa_alsa_dump(PA_LOG_DEBUG, u->pcm_handle);
2215 if (!(u->thread = pa_thread_new("alsa-sink", thread_func, u))) {
2216 pa_log("Failed to create thread.");
2220 /* Get initial mixer settings */
2221 if (data.volume_is_set) {
2222 if (u->sink->set_volume)
2223 u->sink->set_volume(u->sink);
2225 if (u->sink->get_volume)
2226 u->sink->get_volume(u->sink);
2229 if (data.muted_is_set) {
2230 if (u->sink->set_mute)
2231 u->sink->set_mute(u->sink);
2233 if (u->sink->get_mute)
2234 u->sink->get_mute(u->sink);
2237 if ((data.volume_is_set || data.muted_is_set) && u->sink->write_volume)
2238 u->sink->write_volume(u->sink);
2241 /* For S/PDIF and HDMI, allow getting/setting custom formats */
2242 pa_format_info *format;
2244 /* To start with, we only support PCM formats. Other formats may be added
2245 * with pa_sink_set_formats().*/
2246 format = pa_format_info_new();
2247 format->encoding = PA_ENCODING_PCM;
2248 u->formats = pa_idxset_new(NULL, NULL);
2249 pa_idxset_put(u->formats, format, NULL);
2251 u->sink->get_formats = sink_get_formats;
2252 u->sink->set_formats = sink_set_formats;
2255 pa_sink_put(u->sink);
2258 pa_alsa_profile_set_free(profile_set);
2268 pa_alsa_profile_set_free(profile_set);
2273 static void userdata_free(struct userdata *u) {
2277 pa_sink_unlink(u->sink);
2280 pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
2281 pa_thread_free(u->thread);
2284 pa_thread_mq_done(&u->thread_mq);
2287 pa_sink_unref(u->sink);
2289 if (u->memchunk.memblock)
2290 pa_memblock_unref(u->memchunk.memblock);
2293 pa_alsa_mixer_pdata_free(u->mixer_pd);
2295 if (u->alsa_rtpoll_item)
2296 pa_rtpoll_item_free(u->alsa_rtpoll_item);
2299 pa_rtpoll_free(u->rtpoll);
2301 if (u->pcm_handle) {
2302 snd_pcm_drop(u->pcm_handle);
2303 snd_pcm_close(u->pcm_handle);
2307 pa_alsa_fdlist_free(u->mixer_fdl);
2309 if (u->mixer_path_set)
2310 pa_alsa_path_set_free(u->mixer_path_set);
2311 else if (u->mixer_path)
2312 pa_alsa_path_free(u->mixer_path);
2314 if (u->mixer_handle)
2315 snd_mixer_close(u->mixer_handle);
2318 pa_smoother_free(u->smoother);
2321 pa_idxset_free(u->formats, (pa_free2_cb_t) pa_format_info_free2, NULL);
2326 pa_xfree(u->device_name);
2327 pa_xfree(u->control_device);
2331 void pa_alsa_sink_free(pa_sink *s) {
2334 pa_sink_assert_ref(s);
2335 pa_assert_se(u = s->userdata);