2 This file is part of PulseAudio.
4 Copyright 2004-2008 Lennart Poettering
5 Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
7 PulseAudio is free software; you can redistribute it and/or modify
8 it under the terms of the GNU Lesser General Public License as published
9 by the Free Software Foundation; either version 2.1 of the License,
10 or (at your option) any later version.
12 PulseAudio is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 General Public License for more details.
17 You should have received a copy of the GNU Lesser General Public License
18 along with PulseAudio; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
29 #include <asoundlib.h>
31 #ifdef HAVE_VALGRIND_MEMCHECK_H
32 #include <valgrind/memcheck.h>
35 #include <pulse/rtclock.h>
36 #include <pulse/timeval.h>
37 #include <pulse/volume.h>
38 #include <pulse/xmalloc.h>
39 #include <pulse/internal.h>
41 #include <pulsecore/core.h>
42 #include <pulsecore/i18n.h>
43 #include <pulsecore/module.h>
44 #include <pulsecore/memchunk.h>
45 #include <pulsecore/sink.h>
46 #include <pulsecore/modargs.h>
47 #include <pulsecore/core-rtclock.h>
48 #include <pulsecore/core-util.h>
49 #include <pulsecore/sample-util.h>
50 #include <pulsecore/log.h>
51 #include <pulsecore/macro.h>
52 #include <pulsecore/thread.h>
53 #include <pulsecore/thread-mq.h>
54 #include <pulsecore/rtpoll.h>
55 #include <pulsecore/time-smoother.h>
57 #include <modules/reserve-wrap.h>
59 #include "alsa-util.h"
60 #include "alsa-sink.h"
62 /* #define DEBUG_TIMING */
64 #define DEFAULT_DEVICE "default"
66 #define DEFAULT_TSCHED_BUFFER_USEC (2*PA_USEC_PER_SEC) /* 2s -- Overall buffer size */
67 #define DEFAULT_TSCHED_WATERMARK_USEC (20*PA_USEC_PER_MSEC) /* 20ms -- Fill up when only this much is left in the buffer */
69 #define TSCHED_WATERMARK_INC_STEP_USEC (10*PA_USEC_PER_MSEC) /* 10ms -- On underrun, increase watermark by this */
70 #define TSCHED_WATERMARK_DEC_STEP_USEC (5*PA_USEC_PER_MSEC) /* 5ms -- When everything's great, decrease watermark by this */
71 #define TSCHED_WATERMARK_VERIFY_AFTER_USEC (20*PA_USEC_PER_SEC) /* 20s -- How long after a drop out recheck if things are good now */
72 #define TSCHED_WATERMARK_INC_THRESHOLD_USEC (0*PA_USEC_PER_MSEC) /* 0ms -- If the buffer level ever below this threshold, increase the watermark */
73 #define TSCHED_WATERMARK_DEC_THRESHOLD_USEC (100*PA_USEC_PER_MSEC) /* 100ms -- If the buffer level didn't drop below this threshold in the verification time, decrease the watermark */
75 /* Note that TSCHED_WATERMARK_INC_THRESHOLD_USEC == 0 means that we
76 * will increase the watermark only if we hit a real underrun. */
78 #define TSCHED_MIN_SLEEP_USEC (10*PA_USEC_PER_MSEC) /* 10ms -- Sleep at least 10ms on each iteration */
79 #define TSCHED_MIN_WAKEUP_USEC (4*PA_USEC_PER_MSEC) /* 4ms -- Wakeup at least this long before the buffer runs empty*/
81 #define SMOOTHER_WINDOW_USEC (10*PA_USEC_PER_SEC) /* 10s -- smoother windows size */
82 #define SMOOTHER_ADJUST_USEC (1*PA_USEC_PER_SEC) /* 1s -- smoother adjust time */
84 #define SMOOTHER_MIN_INTERVAL (2*PA_USEC_PER_MSEC) /* 2ms -- min smoother update interval */
85 #define SMOOTHER_MAX_INTERVAL (200*PA_USEC_PER_MSEC) /* 200ms -- max smoother update interval */
87 #define VOLUME_ACCURACY (PA_VOLUME_NORM/100) /* don't require volume adjustments to be perfectly correct. don't necessarily extend granularity in software unless the differences get greater than this level */
89 #define DEFAULT_REWIND_SAFEGUARD_BYTES (256U) /* 1.33ms @48kHz, we'll never rewind less than this */
90 #define DEFAULT_REWIND_SAFEGUARD_USEC (1330) /* 1.33ms, depending on channels/rate/sample we may rewind more than 256 above */
98 pa_thread_mq thread_mq;
101 snd_pcm_t *pcm_handle;
104 pa_alsa_fdlist *mixer_fdl;
105 pa_alsa_mixer_pdata *mixer_pd;
106 snd_mixer_t *mixer_handle;
107 pa_alsa_path_set *mixer_path_set;
108 pa_alsa_path *mixer_path;
110 pa_cvolume hardware_volume;
119 tsched_watermark_ref,
125 watermark_inc_threshold,
126 watermark_dec_threshold,
129 pa_usec_t watermark_dec_not_before;
130 pa_usec_t min_latency_ref;
132 pa_memchunk memchunk;
134 char *device_name; /* name of the PCM device */
135 char *control_device; /* name of the control device */
137 pa_bool_t use_mmap:1, use_tsched:1, deferred_volume:1;
139 pa_bool_t first, after_rewind;
141 pa_rtpoll_item *alsa_rtpoll_item;
143 snd_mixer_selem_channel_id_t mixer_map[SND_MIXER_SCHN_LAST];
145 pa_smoother *smoother;
146 uint64_t write_count;
147 uint64_t since_start;
148 pa_usec_t smoother_interval;
149 pa_usec_t last_smoother_update;
153 pa_reserve_wrapper *reserve;
154 pa_hook_slot *reserve_slot;
155 pa_reserve_monitor_wrapper *monitor;
156 pa_hook_slot *monitor_slot;
159 static void userdata_free(struct userdata *u);
161 /* FIXME: Is there a better way to do this than device names? */
162 static pa_bool_t is_iec958(struct userdata *u) {
163 return (strncmp("iec958", u->device_name, 6) == 0);
166 static pa_bool_t is_hdmi(struct userdata *u) {
167 return (strncmp("hdmi", u->device_name, 4) == 0);
170 static pa_hook_result_t reserve_cb(pa_reserve_wrapper *r, void *forced, struct userdata *u) {
174 if (pa_sink_suspend(u->sink, TRUE, PA_SUSPEND_APPLICATION) < 0)
175 return PA_HOOK_CANCEL;
180 static void reserve_done(struct userdata *u) {
183 if (u->reserve_slot) {
184 pa_hook_slot_free(u->reserve_slot);
185 u->reserve_slot = NULL;
189 pa_reserve_wrapper_unref(u->reserve);
194 static void reserve_update(struct userdata *u) {
195 const char *description;
198 if (!u->sink || !u->reserve)
201 if ((description = pa_proplist_gets(u->sink->proplist, PA_PROP_DEVICE_DESCRIPTION)))
202 pa_reserve_wrapper_set_application_device_name(u->reserve, description);
205 static int reserve_init(struct userdata *u, const char *dname) {
214 if (pa_in_system_mode())
217 if (!(rname = pa_alsa_get_reserve_name(dname)))
220 /* We are resuming, try to lock the device */
221 u->reserve = pa_reserve_wrapper_get(u->core, rname);
229 pa_assert(!u->reserve_slot);
230 u->reserve_slot = pa_hook_connect(pa_reserve_wrapper_hook(u->reserve), PA_HOOK_NORMAL, (pa_hook_cb_t) reserve_cb, u);
235 static pa_hook_result_t monitor_cb(pa_reserve_monitor_wrapper *w, void* busy, struct userdata *u) {
241 b = PA_PTR_TO_UINT(busy) && !u->reserve;
243 pa_sink_suspend(u->sink, b, PA_SUSPEND_APPLICATION);
247 static void monitor_done(struct userdata *u) {
250 if (u->monitor_slot) {
251 pa_hook_slot_free(u->monitor_slot);
252 u->monitor_slot = NULL;
256 pa_reserve_monitor_wrapper_unref(u->monitor);
261 static int reserve_monitor_init(struct userdata *u, const char *dname) {
267 if (pa_in_system_mode())
270 if (!(rname = pa_alsa_get_reserve_name(dname)))
273 /* We are resuming, try to lock the device */
274 u->monitor = pa_reserve_monitor_wrapper_get(u->core, rname);
280 pa_assert(!u->monitor_slot);
281 u->monitor_slot = pa_hook_connect(pa_reserve_monitor_wrapper_hook(u->monitor), PA_HOOK_NORMAL, (pa_hook_cb_t) monitor_cb, u);
286 static void fix_min_sleep_wakeup(struct userdata *u) {
287 size_t max_use, max_use_2;
290 pa_assert(u->use_tsched);
292 max_use = u->hwbuf_size - u->hwbuf_unused;
293 max_use_2 = pa_frame_align(max_use/2, &u->sink->sample_spec);
295 u->min_sleep = pa_usec_to_bytes(TSCHED_MIN_SLEEP_USEC, &u->sink->sample_spec);
296 u->min_sleep = PA_CLAMP(u->min_sleep, u->frame_size, max_use_2);
298 u->min_wakeup = pa_usec_to_bytes(TSCHED_MIN_WAKEUP_USEC, &u->sink->sample_spec);
299 u->min_wakeup = PA_CLAMP(u->min_wakeup, u->frame_size, max_use_2);
302 static void fix_tsched_watermark(struct userdata *u) {
305 pa_assert(u->use_tsched);
307 max_use = u->hwbuf_size - u->hwbuf_unused;
309 if (u->tsched_watermark > max_use - u->min_sleep)
310 u->tsched_watermark = max_use - u->min_sleep;
312 if (u->tsched_watermark < u->min_wakeup)
313 u->tsched_watermark = u->min_wakeup;
316 static void increase_watermark(struct userdata *u) {
317 size_t old_watermark;
318 pa_usec_t old_min_latency, new_min_latency;
321 pa_assert(u->use_tsched);
323 /* First, just try to increase the watermark */
324 old_watermark = u->tsched_watermark;
325 u->tsched_watermark = PA_MIN(u->tsched_watermark * 2, u->tsched_watermark + u->watermark_inc_step);
326 fix_tsched_watermark(u);
328 if (old_watermark != u->tsched_watermark) {
329 pa_log_info("Increasing wakeup watermark to %0.2f ms",
330 (double) pa_bytes_to_usec(u->tsched_watermark, &u->sink->sample_spec) / PA_USEC_PER_MSEC);
334 /* Hmm, we cannot increase the watermark any further, hence let's raise the latency */
335 old_min_latency = u->sink->thread_info.min_latency;
336 new_min_latency = PA_MIN(old_min_latency * 2, old_min_latency + TSCHED_WATERMARK_INC_STEP_USEC);
337 new_min_latency = PA_MIN(new_min_latency, u->sink->thread_info.max_latency);
339 if (old_min_latency != new_min_latency) {
340 pa_log_info("Increasing minimal latency to %0.2f ms",
341 (double) new_min_latency / PA_USEC_PER_MSEC);
343 pa_sink_set_latency_range_within_thread(u->sink, new_min_latency, u->sink->thread_info.max_latency);
346 /* When we reach this we're officialy fucked! */
349 static void decrease_watermark(struct userdata *u) {
350 size_t old_watermark;
354 pa_assert(u->use_tsched);
356 now = pa_rtclock_now();
358 if (u->watermark_dec_not_before <= 0)
361 if (u->watermark_dec_not_before > now)
364 old_watermark = u->tsched_watermark;
366 if (u->tsched_watermark < u->watermark_dec_step)
367 u->tsched_watermark = u->tsched_watermark / 2;
369 u->tsched_watermark = PA_MAX(u->tsched_watermark / 2, u->tsched_watermark - u->watermark_dec_step);
371 fix_tsched_watermark(u);
373 if (old_watermark != u->tsched_watermark)
374 pa_log_info("Decreasing wakeup watermark to %0.2f ms",
375 (double) pa_bytes_to_usec(u->tsched_watermark, &u->sink->sample_spec) / PA_USEC_PER_MSEC);
377 /* We don't change the latency range*/
380 u->watermark_dec_not_before = now + TSCHED_WATERMARK_VERIFY_AFTER_USEC;
383 static void hw_sleep_time(struct userdata *u, pa_usec_t *sleep_usec, pa_usec_t*process_usec) {
386 pa_assert(sleep_usec);
387 pa_assert(process_usec);
390 pa_assert(u->use_tsched);
392 usec = pa_sink_get_requested_latency_within_thread(u->sink);
394 if (usec == (pa_usec_t) -1)
395 usec = pa_bytes_to_usec(u->hwbuf_size, &u->sink->sample_spec);
397 wm = pa_bytes_to_usec(u->tsched_watermark, &u->sink->sample_spec);
402 *sleep_usec = usec - wm;
406 pa_log_debug("Buffer time: %lu ms; Sleep time: %lu ms; Process time: %lu ms",
407 (unsigned long) (usec / PA_USEC_PER_MSEC),
408 (unsigned long) (*sleep_usec / PA_USEC_PER_MSEC),
409 (unsigned long) (*process_usec / PA_USEC_PER_MSEC));
413 static int try_recover(struct userdata *u, const char *call, int err) {
418 pa_log_debug("%s: %s", call, pa_alsa_strerror(err));
420 pa_assert(err != -EAGAIN);
423 pa_log_debug("%s: Buffer underrun!", call);
425 if (err == -ESTRPIPE)
426 pa_log_debug("%s: System suspended!", call);
428 if ((err = snd_pcm_recover(u->pcm_handle, err, 1)) < 0) {
429 pa_log("%s: %s", call, pa_alsa_strerror(err));
438 static size_t check_left_to_play(struct userdata *u, size_t n_bytes, pa_bool_t on_timeout) {
440 pa_bool_t underrun = FALSE;
442 /* We use <= instead of < for this check here because an underrun
443 * only happens after the last sample was processed, not already when
444 * it is removed from the buffer. This is particularly important
445 * when block transfer is used. */
447 if (n_bytes <= u->hwbuf_size)
448 left_to_play = u->hwbuf_size - n_bytes;
451 /* We got a dropout. What a mess! */
459 if (!u->first && !u->after_rewind)
460 if (pa_log_ratelimit(PA_LOG_INFO))
461 pa_log_info("Underrun!");
465 pa_log_debug("%0.2f ms left to play; inc threshold = %0.2f ms; dec threshold = %0.2f ms",
466 (double) pa_bytes_to_usec(left_to_play, &u->sink->sample_spec) / PA_USEC_PER_MSEC,
467 (double) pa_bytes_to_usec(u->watermark_inc_threshold, &u->sink->sample_spec) / PA_USEC_PER_MSEC,
468 (double) pa_bytes_to_usec(u->watermark_dec_threshold, &u->sink->sample_spec) / PA_USEC_PER_MSEC);
472 pa_bool_t reset_not_before = TRUE;
474 if (!u->first && !u->after_rewind) {
475 if (underrun || left_to_play < u->watermark_inc_threshold)
476 increase_watermark(u);
477 else if (left_to_play > u->watermark_dec_threshold) {
478 reset_not_before = FALSE;
480 /* We decrease the watermark only if have actually
481 * been woken up by a timeout. If something else woke
482 * us up it's too easy to fulfill the deadlines... */
485 decrease_watermark(u);
489 if (reset_not_before)
490 u->watermark_dec_not_before = 0;
496 static int mmap_write(struct userdata *u, pa_usec_t *sleep_usec, pa_bool_t polled, pa_bool_t on_timeout) {
497 pa_bool_t work_done = FALSE;
498 pa_usec_t max_sleep_usec = 0, process_usec = 0;
503 pa_sink_assert_ref(u->sink);
506 hw_sleep_time(u, &max_sleep_usec, &process_usec);
512 pa_bool_t after_avail = TRUE;
514 /* First we determine how many samples are missing to fill the
515 * buffer up to 100% */
517 if (PA_UNLIKELY((n = pa_alsa_safe_avail(u->pcm_handle, u->hwbuf_size, &u->sink->sample_spec)) < 0)) {
519 if ((r = try_recover(u, "snd_pcm_avail", (int) n)) == 0)
525 n_bytes = (size_t) n * u->frame_size;
528 pa_log_debug("avail: %lu", (unsigned long) n_bytes);
531 left_to_play = check_left_to_play(u, n_bytes, on_timeout);
536 /* We won't fill up the playback buffer before at least
537 * half the sleep time is over because otherwise we might
538 * ask for more data from the clients then they expect. We
539 * need to guarantee that clients only have to keep around
540 * a single hw buffer length. */
543 pa_bytes_to_usec(left_to_play, &u->sink->sample_spec) > process_usec+max_sleep_usec/2) {
545 pa_log_debug("Not filling up, because too early.");
550 if (PA_UNLIKELY(n_bytes <= u->hwbuf_unused)) {
554 char *dn = pa_alsa_get_driver_name_by_pcm(u->pcm_handle);
555 pa_log(_("ALSA woke us up to write new data to the device, but there was actually nothing to write!\n"
556 "Most likely this is a bug in the ALSA driver '%s'. Please report this issue to the ALSA developers.\n"
557 "We were woken up with POLLOUT set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail."),
563 pa_log_debug("Not filling up, because not necessary.");
571 pa_log_debug("Not filling up, because already too many iterations.");
577 n_bytes -= u->hwbuf_unused;
581 pa_log_debug("Filling up");
588 const snd_pcm_channel_area_t *areas;
589 snd_pcm_uframes_t offset, frames;
590 snd_pcm_sframes_t sframes;
592 frames = (snd_pcm_uframes_t) (n_bytes / u->frame_size);
593 /* pa_log_debug("%lu frames to write", (unsigned long) frames); */
595 if (PA_UNLIKELY((err = pa_alsa_safe_mmap_begin(u->pcm_handle, &areas, &offset, &frames, u->hwbuf_size, &u->sink->sample_spec)) < 0)) {
597 if (!after_avail && err == -EAGAIN)
600 if ((r = try_recover(u, "snd_pcm_mmap_begin", err)) == 0)
606 /* Make sure that if these memblocks need to be copied they will fit into one slot */
607 if (frames > pa_mempool_block_size_max(u->core->mempool)/u->frame_size)
608 frames = pa_mempool_block_size_max(u->core->mempool)/u->frame_size;
610 if (!after_avail && frames == 0)
613 pa_assert(frames > 0);
616 /* Check these are multiples of 8 bit */
617 pa_assert((areas[0].first & 7) == 0);
618 pa_assert((areas[0].step & 7)== 0);
620 /* We assume a single interleaved memory buffer */
621 pa_assert((areas[0].first >> 3) == 0);
622 pa_assert((areas[0].step >> 3) == u->frame_size);
624 p = (uint8_t*) areas[0].addr + (offset * u->frame_size);
626 chunk.memblock = pa_memblock_new_fixed(u->core->mempool, p, frames * u->frame_size, TRUE);
627 chunk.length = pa_memblock_get_length(chunk.memblock);
630 pa_sink_render_into_full(u->sink, &chunk);
631 pa_memblock_unref_fixed(chunk.memblock);
633 if (PA_UNLIKELY((sframes = snd_pcm_mmap_commit(u->pcm_handle, offset, frames)) < 0)) {
635 if (!after_avail && (int) sframes == -EAGAIN)
638 if ((r = try_recover(u, "snd_pcm_mmap_commit", (int) sframes)) == 0)
646 u->write_count += frames * u->frame_size;
647 u->since_start += frames * u->frame_size;
650 pa_log_debug("Wrote %lu bytes (of possible %lu bytes)", (unsigned long) (frames * u->frame_size), (unsigned long) n_bytes);
653 if ((size_t) frames * u->frame_size >= n_bytes)
656 n_bytes -= (size_t) frames * u->frame_size;
661 *sleep_usec = pa_bytes_to_usec(left_to_play, &u->sink->sample_spec);
662 process_usec = pa_bytes_to_usec(u->tsched_watermark, &u->sink->sample_spec);
664 if (*sleep_usec > process_usec)
665 *sleep_usec -= process_usec;
671 return work_done ? 1 : 0;
674 static int unix_write(struct userdata *u, pa_usec_t *sleep_usec, pa_bool_t polled, pa_bool_t on_timeout) {
675 pa_bool_t work_done = FALSE;
676 pa_usec_t max_sleep_usec = 0, process_usec = 0;
681 pa_sink_assert_ref(u->sink);
684 hw_sleep_time(u, &max_sleep_usec, &process_usec);
690 pa_bool_t after_avail = TRUE;
692 if (PA_UNLIKELY((n = pa_alsa_safe_avail(u->pcm_handle, u->hwbuf_size, &u->sink->sample_spec)) < 0)) {
694 if ((r = try_recover(u, "snd_pcm_avail", (int) n)) == 0)
700 n_bytes = (size_t) n * u->frame_size;
701 left_to_play = check_left_to_play(u, n_bytes, on_timeout);
706 /* We won't fill up the playback buffer before at least
707 * half the sleep time is over because otherwise we might
708 * ask for more data from the clients then they expect. We
709 * need to guarantee that clients only have to keep around
710 * a single hw buffer length. */
713 pa_bytes_to_usec(left_to_play, &u->sink->sample_spec) > process_usec+max_sleep_usec/2)
716 if (PA_UNLIKELY(n_bytes <= u->hwbuf_unused)) {
720 char *dn = pa_alsa_get_driver_name_by_pcm(u->pcm_handle);
721 pa_log(_("ALSA woke us up to write new data to the device, but there was actually nothing to write!\n"
722 "Most likely this is a bug in the ALSA driver '%s'. Please report this issue to the ALSA developers.\n"
723 "We were woken up with POLLOUT set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail."),
733 pa_log_debug("Not filling up, because already too many iterations.");
739 n_bytes -= u->hwbuf_unused;
743 snd_pcm_sframes_t frames;
746 /* pa_log_debug("%lu frames to write", (unsigned long) frames); */
748 if (u->memchunk.length <= 0)
749 pa_sink_render(u->sink, n_bytes, &u->memchunk);
751 pa_assert(u->memchunk.length > 0);
753 frames = (snd_pcm_sframes_t) (u->memchunk.length / u->frame_size);
755 if (frames > (snd_pcm_sframes_t) (n_bytes/u->frame_size))
756 frames = (snd_pcm_sframes_t) (n_bytes/u->frame_size);
758 p = pa_memblock_acquire(u->memchunk.memblock);
759 frames = snd_pcm_writei(u->pcm_handle, (const uint8_t*) p + u->memchunk.index, (snd_pcm_uframes_t) frames);
760 pa_memblock_release(u->memchunk.memblock);
762 if (PA_UNLIKELY(frames < 0)) {
764 if (!after_avail && (int) frames == -EAGAIN)
767 if ((r = try_recover(u, "snd_pcm_writei", (int) frames)) == 0)
773 if (!after_avail && frames == 0)
776 pa_assert(frames > 0);
779 u->memchunk.index += (size_t) frames * u->frame_size;
780 u->memchunk.length -= (size_t) frames * u->frame_size;
782 if (u->memchunk.length <= 0) {
783 pa_memblock_unref(u->memchunk.memblock);
784 pa_memchunk_reset(&u->memchunk);
789 u->write_count += frames * u->frame_size;
790 u->since_start += frames * u->frame_size;
792 /* pa_log_debug("wrote %lu frames", (unsigned long) frames); */
794 if ((size_t) frames * u->frame_size >= n_bytes)
797 n_bytes -= (size_t) frames * u->frame_size;
802 *sleep_usec = pa_bytes_to_usec(left_to_play, &u->sink->sample_spec);
803 process_usec = pa_bytes_to_usec(u->tsched_watermark, &u->sink->sample_spec);
805 if (*sleep_usec > process_usec)
806 *sleep_usec -= process_usec;
812 return work_done ? 1 : 0;
815 static void update_smoother(struct userdata *u) {
816 snd_pcm_sframes_t delay = 0;
819 pa_usec_t now1 = 0, now2;
820 snd_pcm_status_t *status;
822 snd_pcm_status_alloca(&status);
825 pa_assert(u->pcm_handle);
827 /* Let's update the time smoother */
829 if (PA_UNLIKELY((err = pa_alsa_safe_delay(u->pcm_handle, &delay, u->hwbuf_size, &u->sink->sample_spec, FALSE)) < 0)) {
830 pa_log_warn("Failed to query DSP status data: %s", pa_alsa_strerror(err));
834 if (PA_UNLIKELY((err = snd_pcm_status(u->pcm_handle, status)) < 0))
835 pa_log_warn("Failed to get timestamp: %s", pa_alsa_strerror(err));
837 snd_htimestamp_t htstamp = { 0, 0 };
838 snd_pcm_status_get_htstamp(status, &htstamp);
839 now1 = pa_timespec_load(&htstamp);
842 /* Hmm, if the timestamp is 0, then it wasn't set and we take the current time */
844 now1 = pa_rtclock_now();
846 /* check if the time since the last update is bigger than the interval */
847 if (u->last_smoother_update > 0)
848 if (u->last_smoother_update + u->smoother_interval > now1)
851 position = (int64_t) u->write_count - ((int64_t) delay * (int64_t) u->frame_size);
853 if (PA_UNLIKELY(position < 0))
856 now2 = pa_bytes_to_usec((uint64_t) position, &u->sink->sample_spec);
858 pa_smoother_put(u->smoother, now1, now2);
860 u->last_smoother_update = now1;
861 /* exponentially increase the update interval up to the MAX limit */
862 u->smoother_interval = PA_MIN (u->smoother_interval * 2, SMOOTHER_MAX_INTERVAL);
865 static pa_usec_t sink_get_latency(struct userdata *u) {
868 pa_usec_t now1, now2;
872 now1 = pa_rtclock_now();
873 now2 = pa_smoother_get(u->smoother, now1);
875 delay = (int64_t) pa_bytes_to_usec(u->write_count, &u->sink->sample_spec) - (int64_t) now2;
877 r = delay >= 0 ? (pa_usec_t) delay : 0;
879 if (u->memchunk.memblock)
880 r += pa_bytes_to_usec(u->memchunk.length, &u->sink->sample_spec);
885 static int build_pollfd(struct userdata *u) {
887 pa_assert(u->pcm_handle);
889 if (u->alsa_rtpoll_item)
890 pa_rtpoll_item_free(u->alsa_rtpoll_item);
892 if (!(u->alsa_rtpoll_item = pa_alsa_build_pollfd(u->pcm_handle, u->rtpoll)))
898 /* Called from IO context */
899 static int suspend(struct userdata *u) {
901 pa_assert(u->pcm_handle);
903 pa_smoother_pause(u->smoother, pa_rtclock_now());
905 /* Let's suspend -- we don't call snd_pcm_drain() here since that might
906 * take awfully long with our long buffer sizes today. */
907 snd_pcm_close(u->pcm_handle);
908 u->pcm_handle = NULL;
910 if (u->alsa_rtpoll_item) {
911 pa_rtpoll_item_free(u->alsa_rtpoll_item);
912 u->alsa_rtpoll_item = NULL;
915 /* We reset max_rewind/max_request here to make sure that while we
916 * are suspended the old max_request/max_rewind values set before
917 * the suspend can influence the per-stream buffer of newly
918 * created streams, without their requirements having any
919 * influence on them. */
920 pa_sink_set_max_rewind_within_thread(u->sink, 0);
921 pa_sink_set_max_request_within_thread(u->sink, 0);
923 pa_log_info("Device suspended...");
928 /* Called from IO context */
929 static int update_sw_params(struct userdata *u) {
930 snd_pcm_uframes_t avail_min;
935 /* Use the full buffer if no one asked us for anything specific */
941 if ((latency = pa_sink_get_requested_latency_within_thread(u->sink)) != (pa_usec_t) -1) {
944 pa_log_debug("Latency set to %0.2fms", (double) latency / PA_USEC_PER_MSEC);
946 b = pa_usec_to_bytes(latency, &u->sink->sample_spec);
948 /* We need at least one sample in our buffer */
950 if (PA_UNLIKELY(b < u->frame_size))
953 u->hwbuf_unused = PA_LIKELY(b < u->hwbuf_size) ? (u->hwbuf_size - b) : 0;
956 fix_min_sleep_wakeup(u);
957 fix_tsched_watermark(u);
960 pa_log_debug("hwbuf_unused=%lu", (unsigned long) u->hwbuf_unused);
962 /* We need at last one frame in the used part of the buffer */
963 avail_min = (snd_pcm_uframes_t) u->hwbuf_unused / u->frame_size + 1;
966 pa_usec_t sleep_usec, process_usec;
968 hw_sleep_time(u, &sleep_usec, &process_usec);
969 avail_min += pa_usec_to_bytes(sleep_usec, &u->sink->sample_spec) / u->frame_size;
972 pa_log_debug("setting avail_min=%lu", (unsigned long) avail_min);
974 if ((err = pa_alsa_set_sw_params(u->pcm_handle, avail_min, !u->use_tsched)) < 0) {
975 pa_log("Failed to set software parameters: %s", pa_alsa_strerror(err));
979 pa_sink_set_max_request_within_thread(u->sink, u->hwbuf_size - u->hwbuf_unused);
980 if (pa_alsa_pcm_is_hw(u->pcm_handle))
981 pa_sink_set_max_rewind_within_thread(u->sink, u->hwbuf_size);
983 pa_log_info("Disabling rewind_within_thread for device %s", u->device_name);
984 pa_sink_set_max_rewind_within_thread(u->sink, 0);
990 /* Called from IO Context on unsuspend or from main thread when creating sink */
991 static void reset_watermark(struct userdata *u, size_t tsched_watermark, pa_sample_spec *ss,
994 u->tsched_watermark = pa_usec_to_bytes_round_up(pa_bytes_to_usec_round_up(tsched_watermark, ss),
995 &u->sink->sample_spec);
997 u->watermark_inc_step = pa_usec_to_bytes(TSCHED_WATERMARK_INC_STEP_USEC, &u->sink->sample_spec);
998 u->watermark_dec_step = pa_usec_to_bytes(TSCHED_WATERMARK_DEC_STEP_USEC, &u->sink->sample_spec);
1000 u->watermark_inc_threshold = pa_usec_to_bytes_round_up(TSCHED_WATERMARK_INC_THRESHOLD_USEC, &u->sink->sample_spec);
1001 u->watermark_dec_threshold = pa_usec_to_bytes_round_up(TSCHED_WATERMARK_DEC_THRESHOLD_USEC, &u->sink->sample_spec);
1003 fix_min_sleep_wakeup(u);
1004 fix_tsched_watermark(u);
1007 pa_sink_set_latency_range_within_thread(u->sink,
1009 pa_bytes_to_usec(u->hwbuf_size, ss));
1011 pa_sink_set_latency_range(u->sink,
1013 pa_bytes_to_usec(u->hwbuf_size, ss));
1015 /* work-around assert in pa_sink_set_latency_within_thead,
1016 keep track of min_latency and reuse it when
1017 this routine is called from IO context */
1018 u->min_latency_ref = u->sink->thread_info.min_latency;
1021 pa_log_info("Time scheduling watermark is %0.2fms",
1022 (double) pa_bytes_to_usec(u->tsched_watermark, ss) / PA_USEC_PER_MSEC);
1025 /* Called from IO context */
1026 static int unsuspend(struct userdata *u) {
1030 snd_pcm_uframes_t period_size, buffer_size;
1031 char *device_name = NULL;
1034 pa_assert(!u->pcm_handle);
1036 pa_log_info("Trying resume...");
1038 if ((is_iec958(u) || is_hdmi(u)) && pa_sink_is_passthrough(u->sink)) {
1039 /* Need to open device in NONAUDIO mode */
1040 int len = strlen(u->device_name) + 8;
1042 device_name = pa_xmalloc(len);
1043 pa_snprintf(device_name, len, "%s,AES0=6", u->device_name);
1046 if ((err = snd_pcm_open(&u->pcm_handle, device_name ? device_name : u->device_name, SND_PCM_STREAM_PLAYBACK,
1048 SND_PCM_NO_AUTO_RESAMPLE|
1049 SND_PCM_NO_AUTO_CHANNELS|
1050 SND_PCM_NO_AUTO_FORMAT)) < 0) {
1051 pa_log("Error opening PCM device %s: %s", u->device_name, pa_alsa_strerror(err));
1055 ss = u->sink->sample_spec;
1056 period_size = u->fragment_size / u->frame_size;
1057 buffer_size = u->hwbuf_size / u->frame_size;
1061 if ((err = pa_alsa_set_hw_params(u->pcm_handle, &ss, &period_size, &buffer_size, 0, &b, &d, TRUE)) < 0) {
1062 pa_log("Failed to set hardware parameters: %s", pa_alsa_strerror(err));
1066 if (b != u->use_mmap || d != u->use_tsched) {
1067 pa_log_warn("Resume failed, couldn't get original access mode.");
1071 if (!pa_sample_spec_equal(&ss, &u->sink->sample_spec)) {
1072 pa_log_warn("Resume failed, couldn't restore original sample settings.");
1076 if (period_size*u->frame_size != u->fragment_size ||
1077 buffer_size*u->frame_size != u->hwbuf_size) {
1078 pa_log_warn("Resume failed, couldn't restore original fragment settings. (Old: %lu/%lu, New %lu/%lu)",
1079 (unsigned long) u->hwbuf_size, (unsigned long) u->fragment_size,
1080 (unsigned long) (buffer_size*u->frame_size), (unsigned long) (period_size*u->frame_size));
1084 if (update_sw_params(u) < 0)
1087 if (build_pollfd(u) < 0)
1091 pa_smoother_reset(u->smoother, pa_rtclock_now(), TRUE);
1092 u->smoother_interval = SMOOTHER_MIN_INTERVAL;
1093 u->last_smoother_update = 0;
1098 /* reset the watermark to the value defined when sink was created */
1100 reset_watermark(u, u->tsched_watermark_ref, &u->sink->sample_spec, TRUE);
1102 pa_log_info("Resumed successfully...");
1104 pa_xfree(device_name);
1108 if (u->pcm_handle) {
1109 snd_pcm_close(u->pcm_handle);
1110 u->pcm_handle = NULL;
1113 pa_xfree(device_name);
1118 /* Called from IO context */
1119 static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
1120 struct userdata *u = PA_SINK(o)->userdata;
1124 case PA_SINK_MESSAGE_GET_LATENCY: {
1128 r = sink_get_latency(u);
1130 *((pa_usec_t*) data) = r;
1135 case PA_SINK_MESSAGE_SET_STATE:
1137 switch ((pa_sink_state_t) PA_PTR_TO_UINT(data)) {
1139 case PA_SINK_SUSPENDED: {
1142 pa_assert(PA_SINK_IS_OPENED(u->sink->thread_info.state));
1144 if ((r = suspend(u)) < 0)
1151 case PA_SINK_RUNNING: {
1154 if (u->sink->thread_info.state == PA_SINK_INIT) {
1155 if (build_pollfd(u) < 0)
1159 if (u->sink->thread_info.state == PA_SINK_SUSPENDED) {
1160 if ((r = unsuspend(u)) < 0)
1167 case PA_SINK_UNLINKED:
1169 case PA_SINK_INVALID_STATE:
1176 return pa_sink_process_msg(o, code, data, offset, chunk);
1179 /* Called from main context */
1180 static int sink_set_state_cb(pa_sink *s, pa_sink_state_t new_state) {
1181 pa_sink_state_t old_state;
1184 pa_sink_assert_ref(s);
1185 pa_assert_se(u = s->userdata);
1187 old_state = pa_sink_get_state(u->sink);
1189 if (PA_SINK_IS_OPENED(old_state) && new_state == PA_SINK_SUSPENDED)
1191 else if (old_state == PA_SINK_SUSPENDED && PA_SINK_IS_OPENED(new_state))
1192 if (reserve_init(u, u->device_name) < 0)
1193 return -PA_ERR_BUSY;
1198 static int ctl_mixer_callback(snd_mixer_elem_t *elem, unsigned int mask) {
1199 struct userdata *u = snd_mixer_elem_get_callback_private(elem);
1202 pa_assert(u->mixer_handle);
1204 if (mask == SND_CTL_EVENT_MASK_REMOVE)
1207 if (!PA_SINK_IS_LINKED(u->sink->state))
1210 if (u->sink->suspend_cause & PA_SUSPEND_SESSION)
1213 if (mask & SND_CTL_EVENT_MASK_VALUE) {
1214 pa_sink_get_volume(u->sink, TRUE);
1215 pa_sink_get_mute(u->sink, TRUE);
1221 static int io_mixer_callback(snd_mixer_elem_t *elem, unsigned int mask) {
1222 struct userdata *u = snd_mixer_elem_get_callback_private(elem);
1225 pa_assert(u->mixer_handle);
1227 if (mask == SND_CTL_EVENT_MASK_REMOVE)
1230 if (u->sink->suspend_cause & PA_SUSPEND_SESSION)
1233 if (mask & SND_CTL_EVENT_MASK_VALUE)
1234 pa_sink_update_volume_and_mute(u->sink);
1239 static void sink_get_volume_cb(pa_sink *s) {
1240 struct userdata *u = s->userdata;
1242 char vol_str_pcnt[PA_CVOLUME_SNPRINT_MAX];
1245 pa_assert(u->mixer_path);
1246 pa_assert(u->mixer_handle);
1248 if (pa_alsa_path_get_volume(u->mixer_path, u->mixer_handle, &s->channel_map, &r) < 0)
1251 /* Shift down by the base volume, so that 0dB becomes maximum volume */
1252 pa_sw_cvolume_multiply_scalar(&r, &r, s->base_volume);
1254 pa_log_debug("Read hardware volume: %s", pa_cvolume_snprint(vol_str_pcnt, sizeof(vol_str_pcnt), &r));
1256 if (u->mixer_path->has_dB) {
1257 char vol_str_db[PA_SW_CVOLUME_SNPRINT_DB_MAX];
1259 pa_log_debug(" in dB: %s", pa_sw_cvolume_snprint_dB(vol_str_db, sizeof(vol_str_db), &r));
1262 if (pa_cvolume_equal(&u->hardware_volume, &r))
1265 s->real_volume = u->hardware_volume = r;
1267 /* Hmm, so the hardware volume changed, let's reset our software volume */
1268 if (u->mixer_path->has_dB)
1269 pa_sink_set_soft_volume(s, NULL);
1272 static void sink_set_volume_cb(pa_sink *s) {
1273 struct userdata *u = s->userdata;
1275 char vol_str_pcnt[PA_CVOLUME_SNPRINT_MAX];
1276 pa_bool_t deferred_volume = !!(s->flags & PA_SINK_DEFERRED_VOLUME);
1279 pa_assert(u->mixer_path);
1280 pa_assert(u->mixer_handle);
1282 /* Shift up by the base volume */
1283 pa_sw_cvolume_divide_scalar(&r, &s->real_volume, s->base_volume);
1285 if (pa_alsa_path_set_volume(u->mixer_path, u->mixer_handle, &s->channel_map, &r, deferred_volume, !deferred_volume) < 0)
1288 /* Shift down by the base volume, so that 0dB becomes maximum volume */
1289 pa_sw_cvolume_multiply_scalar(&r, &r, s->base_volume);
1291 u->hardware_volume = r;
1293 if (u->mixer_path->has_dB) {
1294 pa_cvolume new_soft_volume;
1295 pa_bool_t accurate_enough;
1296 char vol_str_db[PA_SW_CVOLUME_SNPRINT_DB_MAX];
1298 /* Match exactly what the user requested by software */
1299 pa_sw_cvolume_divide(&new_soft_volume, &s->real_volume, &u->hardware_volume);
1301 /* If the adjustment to do in software is only minimal we
1302 * can skip it. That saves us CPU at the expense of a bit of
1305 (pa_cvolume_min(&new_soft_volume) >= (PA_VOLUME_NORM - VOLUME_ACCURACY)) &&
1306 (pa_cvolume_max(&new_soft_volume) <= (PA_VOLUME_NORM + VOLUME_ACCURACY));
1308 pa_log_debug("Requested volume: %s", pa_cvolume_snprint(vol_str_pcnt, sizeof(vol_str_pcnt), &s->real_volume));
1309 pa_log_debug(" in dB: %s", pa_sw_cvolume_snprint_dB(vol_str_db, sizeof(vol_str_db), &s->real_volume));
1310 pa_log_debug("Got hardware volume: %s", pa_cvolume_snprint(vol_str_pcnt, sizeof(vol_str_pcnt), &u->hardware_volume));
1311 pa_log_debug(" in dB: %s", pa_sw_cvolume_snprint_dB(vol_str_db, sizeof(vol_str_db), &u->hardware_volume));
1312 pa_log_debug("Calculated software volume: %s (accurate-enough=%s)",
1313 pa_cvolume_snprint(vol_str_pcnt, sizeof(vol_str_pcnt), &new_soft_volume),
1314 pa_yes_no(accurate_enough));
1315 pa_log_debug(" in dB: %s", pa_sw_cvolume_snprint_dB(vol_str_db, sizeof(vol_str_db), &new_soft_volume));
1317 if (!accurate_enough)
1318 s->soft_volume = new_soft_volume;
1321 pa_log_debug("Wrote hardware volume: %s", pa_cvolume_snprint(vol_str_pcnt, sizeof(vol_str_pcnt), &r));
1323 /* We can't match exactly what the user requested, hence let's
1324 * at least tell the user about it */
1330 static void sink_write_volume_cb(pa_sink *s) {
1331 struct userdata *u = s->userdata;
1332 pa_cvolume hw_vol = s->thread_info.current_hw_volume;
1335 pa_assert(u->mixer_path);
1336 pa_assert(u->mixer_handle);
1337 pa_assert(s->flags & PA_SINK_DEFERRED_VOLUME);
1339 /* Shift up by the base volume */
1340 pa_sw_cvolume_divide_scalar(&hw_vol, &hw_vol, s->base_volume);
1342 if (pa_alsa_path_set_volume(u->mixer_path, u->mixer_handle, &s->channel_map, &hw_vol, TRUE, TRUE) < 0)
1343 pa_log_error("Writing HW volume failed");
1346 pa_bool_t accurate_enough;
1348 /* Shift down by the base volume, so that 0dB becomes maximum volume */
1349 pa_sw_cvolume_multiply_scalar(&hw_vol, &hw_vol, s->base_volume);
1351 pa_sw_cvolume_divide(&tmp_vol, &hw_vol, &s->thread_info.current_hw_volume);
1353 (pa_cvolume_min(&tmp_vol) >= (PA_VOLUME_NORM - VOLUME_ACCURACY)) &&
1354 (pa_cvolume_max(&tmp_vol) <= (PA_VOLUME_NORM + VOLUME_ACCURACY));
1356 if (!accurate_enough) {
1358 char db[2][PA_SW_CVOLUME_SNPRINT_DB_MAX];
1359 char pcnt[2][PA_CVOLUME_SNPRINT_MAX];
1362 pa_log_debug("Written HW volume did not match with the request: %s (request) != %s",
1363 pa_cvolume_snprint(vol.pcnt[0], sizeof(vol.pcnt[0]), &s->thread_info.current_hw_volume),
1364 pa_cvolume_snprint(vol.pcnt[1], sizeof(vol.pcnt[1]), &hw_vol));
1365 pa_log_debug(" in dB: %s (request) != %s",
1366 pa_sw_cvolume_snprint_dB(vol.db[0], sizeof(vol.db[0]), &s->thread_info.current_hw_volume),
1367 pa_sw_cvolume_snprint_dB(vol.db[1], sizeof(vol.db[1]), &hw_vol));
1372 static void sink_get_mute_cb(pa_sink *s) {
1373 struct userdata *u = s->userdata;
1377 pa_assert(u->mixer_path);
1378 pa_assert(u->mixer_handle);
1380 if (pa_alsa_path_get_mute(u->mixer_path, u->mixer_handle, &b) < 0)
1386 static void sink_set_mute_cb(pa_sink *s) {
1387 struct userdata *u = s->userdata;
1390 pa_assert(u->mixer_path);
1391 pa_assert(u->mixer_handle);
1393 pa_alsa_path_set_mute(u->mixer_path, u->mixer_handle, s->muted);
1396 static void mixer_volume_init(struct userdata *u) {
1399 if (!u->mixer_path->has_volume) {
1400 pa_sink_set_write_volume_callback(u->sink, NULL);
1401 pa_sink_set_get_volume_callback(u->sink, NULL);
1402 pa_sink_set_set_volume_callback(u->sink, NULL);
1404 pa_log_info("Driver does not support hardware volume control, falling back to software volume control.");
1406 pa_sink_set_get_volume_callback(u->sink, sink_get_volume_cb);
1407 pa_sink_set_set_volume_callback(u->sink, sink_set_volume_cb);
1409 if (u->mixer_path->has_dB && u->deferred_volume) {
1410 pa_sink_set_write_volume_callback(u->sink, sink_write_volume_cb);
1411 pa_log_info("Successfully enabled synchronous volume.");
1413 pa_sink_set_write_volume_callback(u->sink, NULL);
1415 if (u->mixer_path->has_dB) {
1416 pa_sink_enable_decibel_volume(u->sink, TRUE);
1417 pa_log_info("Hardware volume ranges from %0.2f dB to %0.2f dB.", u->mixer_path->min_dB, u->mixer_path->max_dB);
1419 u->sink->base_volume = pa_sw_volume_from_dB(-u->mixer_path->max_dB);
1420 u->sink->n_volume_steps = PA_VOLUME_NORM+1;
1422 pa_log_info("Fixing base volume to %0.2f dB", pa_sw_volume_to_dB(u->sink->base_volume));
1424 pa_sink_enable_decibel_volume(u->sink, FALSE);
1425 pa_log_info("Hardware volume ranges from %li to %li.", u->mixer_path->min_volume, u->mixer_path->max_volume);
1427 u->sink->base_volume = PA_VOLUME_NORM;
1428 u->sink->n_volume_steps = u->mixer_path->max_volume - u->mixer_path->min_volume + 1;
1431 pa_log_info("Using hardware volume control. Hardware dB scale %s.", u->mixer_path->has_dB ? "supported" : "not supported");
1434 if (!u->mixer_path->has_mute) {
1435 pa_sink_set_get_mute_callback(u->sink, NULL);
1436 pa_sink_set_set_mute_callback(u->sink, NULL);
1437 pa_log_info("Driver does not support hardware mute control, falling back to software mute control.");
1439 pa_sink_set_get_mute_callback(u->sink, sink_get_mute_cb);
1440 pa_sink_set_set_mute_callback(u->sink, sink_set_mute_cb);
1441 pa_log_info("Using hardware mute control.");
1445 static int sink_set_port_cb(pa_sink *s, pa_device_port *p) {
1446 struct userdata *u = s->userdata;
1447 pa_alsa_port_data *data;
1451 pa_assert(u->mixer_handle);
1453 data = PA_DEVICE_PORT_DATA(p);
1455 pa_assert_se(u->mixer_path = data->path);
1456 pa_alsa_path_select(u->mixer_path, u->mixer_handle);
1458 mixer_volume_init(u);
1461 pa_alsa_setting_select(data->setting, u->mixer_handle);
1471 static void sink_update_requested_latency_cb(pa_sink *s) {
1472 struct userdata *u = s->userdata;
1475 pa_assert(u->use_tsched); /* only when timer scheduling is used
1476 * we can dynamically adjust the
1482 before = u->hwbuf_unused;
1483 update_sw_params(u);
1485 /* Let's check whether we now use only a smaller part of the
1486 buffer then before. If so, we need to make sure that subsequent
1487 rewinds are relative to the new maximum fill level and not to the
1488 current fill level. Thus, let's do a full rewind once, to clear
1491 if (u->hwbuf_unused > before) {
1492 pa_log_debug("Requesting rewind due to latency change.");
1493 pa_sink_request_rewind(s, (size_t) -1);
1497 static pa_idxset* sink_get_formats(pa_sink *s) {
1498 struct userdata *u = s->userdata;
1499 pa_idxset *ret = pa_idxset_new(NULL, NULL);
1505 PA_IDXSET_FOREACH(f, u->formats, idx) {
1506 pa_idxset_put(ret, pa_format_info_copy(f), NULL);
1512 static pa_bool_t sink_set_formats(pa_sink *s, pa_idxset *formats) {
1513 struct userdata *u = s->userdata;
1514 pa_format_info *f, *g;
1519 /* FIXME: also validate sample rates against what the device supports */
1520 PA_IDXSET_FOREACH(f, formats, idx) {
1521 if (is_iec958(u) && f->encoding == PA_ENCODING_EAC3_IEC61937)
1522 /* EAC3 cannot be sent over over S/PDIF */
1526 pa_idxset_free(u->formats, (pa_free2_cb_t) pa_format_info_free2, NULL);
1527 u->formats = pa_idxset_new(NULL, NULL);
1529 /* Note: the logic below won't apply if we're using software encoding.
1530 * This is fine for now since we don't support that via the passthrough
1531 * framework, but this must be changed if we do. */
1533 /* Count how many sample rates we support */
1534 for (idx = 0, n = 0; u->rates[idx]; idx++)
1537 /* First insert non-PCM formats since we prefer those. */
1538 PA_IDXSET_FOREACH(f, formats, idx) {
1539 if (!pa_format_info_is_pcm(f)) {
1540 g = pa_format_info_copy(f);
1541 pa_format_info_set_prop_int_array(g, PA_PROP_FORMAT_RATE, (int *) u->rates, n);
1542 pa_idxset_put(u->formats, g, NULL);
1546 /* Now add any PCM formats */
1547 PA_IDXSET_FOREACH(f, formats, idx) {
1548 if (pa_format_info_is_pcm(f)) {
1549 /* We don't set rates here since we'll just tack on a resampler for
1550 * unsupported rates */
1551 pa_idxset_put(u->formats, pa_format_info_copy(f), NULL);
1558 static pa_bool_t sink_update_rate_cb(pa_sink *s, uint32_t rate)
1560 struct userdata *u = s->userdata;
1562 pa_bool_t supported = FALSE;
1566 for (i = 0; u->rates[i]; i++) {
1567 if (u->rates[i] == rate) {
1574 pa_log_info("Sink does not support sample rate of %d Hz", rate);
1578 if (!PA_SINK_IS_OPENED(s->state)) {
1579 pa_log_info("Updating rate for device %s, new rate is %d",u->device_name, rate);
1580 u->sink->sample_spec.rate = rate;
1587 static int process_rewind(struct userdata *u) {
1588 snd_pcm_sframes_t unused;
1589 size_t rewind_nbytes, unused_nbytes, limit_nbytes;
1592 /* Figure out how much we shall rewind and reset the counter */
1593 rewind_nbytes = u->sink->thread_info.rewind_nbytes;
1595 pa_log_debug("Requested to rewind %lu bytes.", (unsigned long) rewind_nbytes);
1597 if (PA_UNLIKELY((unused = pa_alsa_safe_avail(u->pcm_handle, u->hwbuf_size, &u->sink->sample_spec)) < 0)) {
1598 pa_log("snd_pcm_avail() failed: %s", pa_alsa_strerror((int) unused));
1602 unused_nbytes = (size_t) unused * u->frame_size;
1604 /* make sure rewind doesn't go too far, can cause issues with DMAs */
1605 unused_nbytes += u->rewind_safeguard;
1607 if (u->hwbuf_size > unused_nbytes)
1608 limit_nbytes = u->hwbuf_size - unused_nbytes;
1612 if (rewind_nbytes > limit_nbytes)
1613 rewind_nbytes = limit_nbytes;
1615 if (rewind_nbytes > 0) {
1616 snd_pcm_sframes_t in_frames, out_frames;
1618 pa_log_debug("Limited to %lu bytes.", (unsigned long) rewind_nbytes);
1620 in_frames = (snd_pcm_sframes_t) (rewind_nbytes / u->frame_size);
1621 pa_log_debug("before: %lu", (unsigned long) in_frames);
1622 if ((out_frames = snd_pcm_rewind(u->pcm_handle, (snd_pcm_uframes_t) in_frames)) < 0) {
1623 pa_log("snd_pcm_rewind() failed: %s", pa_alsa_strerror((int) out_frames));
1624 if (try_recover(u, "process_rewind", out_frames) < 0)
1629 pa_log_debug("after: %lu", (unsigned long) out_frames);
1631 rewind_nbytes = (size_t) out_frames * u->frame_size;
1633 if (rewind_nbytes <= 0)
1634 pa_log_info("Tried rewind, but was apparently not possible.");
1636 u->write_count -= rewind_nbytes;
1637 pa_log_debug("Rewound %lu bytes.", (unsigned long) rewind_nbytes);
1638 pa_sink_process_rewind(u->sink, rewind_nbytes);
1640 u->after_rewind = TRUE;
1644 pa_log_debug("Mhmm, actually there is nothing to rewind.");
1646 pa_sink_process_rewind(u->sink, 0);
1650 static void thread_func(void *userdata) {
1651 struct userdata *u = userdata;
1652 unsigned short revents = 0;
1656 pa_log_debug("Thread starting up");
1658 if (u->core->realtime_scheduling)
1659 pa_make_realtime(u->core->realtime_priority);
1661 pa_thread_mq_install(&u->thread_mq);
1665 pa_usec_t rtpoll_sleep = 0;
1668 pa_log_debug("Loop");
1671 /* Render some data and write it to the dsp */
1672 if (PA_SINK_IS_OPENED(u->sink->thread_info.state)) {
1674 pa_usec_t sleep_usec = 0;
1675 pa_bool_t on_timeout = pa_rtpoll_timer_elapsed(u->rtpoll);
1677 if (PA_UNLIKELY(u->sink->thread_info.rewind_requested))
1678 if (process_rewind(u) < 0)
1682 work_done = mmap_write(u, &sleep_usec, revents & POLLOUT, on_timeout);
1684 work_done = unix_write(u, &sleep_usec, revents & POLLOUT, on_timeout);
1689 /* pa_log_debug("work_done = %i", work_done); */
1694 pa_log_info("Starting playback.");
1695 snd_pcm_start(u->pcm_handle);
1697 pa_smoother_resume(u->smoother, pa_rtclock_now(), TRUE);
1705 if (u->use_tsched) {
1708 if (u->since_start <= u->hwbuf_size) {
1710 /* USB devices on ALSA seem to hit a buffer
1711 * underrun during the first iterations much
1712 * quicker then we calculate here, probably due to
1713 * the transport latency. To accommodate for that
1714 * we artificially decrease the sleep time until
1715 * we have filled the buffer at least once
1718 if (pa_log_ratelimit(PA_LOG_DEBUG))
1719 pa_log_debug("Cutting sleep time for the initial iterations by half.");
1723 /* OK, the playback buffer is now full, let's
1724 * calculate when to wake up next */
1725 /* pa_log_debug("Waking up in %0.2fms (sound card clock).", (double) sleep_usec / PA_USEC_PER_MSEC); */
1727 /* Convert from the sound card time domain to the
1728 * system time domain */
1729 cusec = pa_smoother_translate(u->smoother, pa_rtclock_now(), sleep_usec);
1731 /* pa_log_debug("Waking up in %0.2fms (system clock).", (double) cusec / PA_USEC_PER_MSEC); */
1733 /* We don't trust the conversion, so we wake up whatever comes first */
1734 rtpoll_sleep = PA_MIN(sleep_usec, cusec);
1737 u->after_rewind = FALSE;
1741 if (u->sink->flags & PA_SINK_DEFERRED_VOLUME) {
1742 pa_usec_t volume_sleep;
1743 pa_sink_volume_change_apply(u->sink, &volume_sleep);
1744 if (volume_sleep > 0) {
1745 if (rtpoll_sleep > 0)
1746 rtpoll_sleep = PA_MIN(volume_sleep, rtpoll_sleep);
1748 rtpoll_sleep = volume_sleep;
1752 if (rtpoll_sleep > 0)
1753 pa_rtpoll_set_timer_relative(u->rtpoll, rtpoll_sleep);
1755 pa_rtpoll_set_timer_disabled(u->rtpoll);
1757 /* Hmm, nothing to do. Let's sleep */
1758 if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0)
1761 if (u->sink->flags & PA_SINK_DEFERRED_VOLUME)
1762 pa_sink_volume_change_apply(u->sink, NULL);
1767 /* Tell ALSA about this and process its response */
1768 if (PA_SINK_IS_OPENED(u->sink->thread_info.state)) {
1769 struct pollfd *pollfd;
1773 pollfd = pa_rtpoll_item_get_pollfd(u->alsa_rtpoll_item, &n);
1775 if ((err = snd_pcm_poll_descriptors_revents(u->pcm_handle, pollfd, n, &revents)) < 0) {
1776 pa_log("snd_pcm_poll_descriptors_revents() failed: %s", pa_alsa_strerror(err));
1780 if (revents & ~POLLOUT) {
1781 if (pa_alsa_recover_from_poll(u->pcm_handle, revents) < 0)
1787 } else if (revents && u->use_tsched && pa_log_ratelimit(PA_LOG_DEBUG))
1788 pa_log_debug("Wakeup from ALSA!");
1795 /* If this was no regular exit from the loop we have to continue
1796 * processing messages until we received PA_MESSAGE_SHUTDOWN */
1797 pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
1798 pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
1801 pa_log_debug("Thread shutting down");
1804 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) {
1810 pa_assert(device_name);
1812 if ((n = pa_modargs_get_value(ma, "sink_name", NULL))) {
1813 pa_sink_new_data_set_name(data, n);
1814 data->namereg_fail = TRUE;
1818 if ((n = pa_modargs_get_value(ma, "name", NULL)))
1819 data->namereg_fail = TRUE;
1821 n = device_id ? device_id : device_name;
1822 data->namereg_fail = FALSE;
1826 t = pa_sprintf_malloc("alsa_output.%s.%s", n, mapping->name);
1828 t = pa_sprintf_malloc("alsa_output.%s", n);
1830 pa_sink_new_data_set_name(data, t);
1834 static void find_mixer(struct userdata *u, pa_alsa_mapping *mapping, const char *element, pa_bool_t ignore_dB) {
1836 if (!mapping && !element)
1839 if (!(u->mixer_handle = pa_alsa_open_mixer_for_pcm(u->pcm_handle, &u->control_device))) {
1840 pa_log_info("Failed to find a working mixer device.");
1846 if (!(u->mixer_path = pa_alsa_path_synthesize(element, PA_ALSA_DIRECTION_OUTPUT)))
1849 if (pa_alsa_path_probe(u->mixer_path, u->mixer_handle, ignore_dB) < 0)
1852 pa_log_debug("Probed mixer path %s:", u->mixer_path->name);
1853 pa_alsa_path_dump(u->mixer_path);
1856 if (!(u->mixer_path_set = pa_alsa_path_set_new(mapping, PA_ALSA_DIRECTION_OUTPUT, u->paths_dir)))
1859 pa_alsa_path_set_probe(u->mixer_path_set, u->mixer_handle, ignore_dB);
1866 if (u->mixer_path_set) {
1867 pa_alsa_path_set_free(u->mixer_path_set);
1868 u->mixer_path_set = NULL;
1869 } else if (u->mixer_path) {
1870 pa_alsa_path_free(u->mixer_path);
1871 u->mixer_path = NULL;
1874 if (u->mixer_handle) {
1875 snd_mixer_close(u->mixer_handle);
1876 u->mixer_handle = NULL;
1881 static int setup_mixer(struct userdata *u, pa_bool_t ignore_dB) {
1882 pa_bool_t need_mixer_callback = FALSE;
1886 if (!u->mixer_handle)
1889 if (u->sink->active_port) {
1890 pa_alsa_port_data *data;
1892 /* We have a list of supported paths, so let's activate the
1893 * one that has been chosen as active */
1895 data = PA_DEVICE_PORT_DATA(u->sink->active_port);
1896 u->mixer_path = data->path;
1898 pa_alsa_path_select(data->path, u->mixer_handle);
1901 pa_alsa_setting_select(data->setting, u->mixer_handle);
1905 if (!u->mixer_path && u->mixer_path_set)
1906 u->mixer_path = u->mixer_path_set->paths;
1908 if (u->mixer_path) {
1909 /* Hmm, we have only a single path, then let's activate it */
1911 pa_alsa_path_select(u->mixer_path, u->mixer_handle);
1913 if (u->mixer_path->settings)
1914 pa_alsa_setting_select(u->mixer_path->settings, u->mixer_handle);
1919 mixer_volume_init(u);
1921 /* Will we need to register callbacks? */
1922 if (u->mixer_path_set && u->mixer_path_set->paths) {
1925 PA_LLIST_FOREACH(p, u->mixer_path_set->paths) {
1926 if (p->has_volume || p->has_mute)
1927 need_mixer_callback = TRUE;
1930 else if (u->mixer_path)
1931 need_mixer_callback = u->mixer_path->has_volume || u->mixer_path->has_mute;
1933 if (need_mixer_callback) {
1934 int (*mixer_callback)(snd_mixer_elem_t *, unsigned int);
1935 if (u->sink->flags & PA_SINK_DEFERRED_VOLUME) {
1936 u->mixer_pd = pa_alsa_mixer_pdata_new();
1937 mixer_callback = io_mixer_callback;
1939 if (pa_alsa_set_mixer_rtpoll(u->mixer_pd, u->mixer_handle, u->rtpoll) < 0) {
1940 pa_log("Failed to initialize file descriptor monitoring");
1944 u->mixer_fdl = pa_alsa_fdlist_new();
1945 mixer_callback = ctl_mixer_callback;
1947 if (pa_alsa_fdlist_set_mixer(u->mixer_fdl, u->mixer_handle, u->core->mainloop) < 0) {
1948 pa_log("Failed to initialize file descriptor monitoring");
1953 if (u->mixer_path_set)
1954 pa_alsa_path_set_set_callback(u->mixer_path_set, u->mixer_handle, mixer_callback, u);
1956 pa_alsa_path_set_callback(u->mixer_path, u->mixer_handle, mixer_callback, u);
1962 pa_sink *pa_alsa_sink_new(pa_module *m, pa_modargs *ma, const char*driver, pa_card *card, pa_alsa_mapping *mapping) {
1964 struct userdata *u = NULL;
1965 const char *dev_id = NULL;
1967 uint32_t alternate_sample_rate;
1969 uint32_t nfrags, frag_size, buffer_size, tsched_size, tsched_watermark, rewind_safeguard;
1970 snd_pcm_uframes_t period_frames, buffer_frames, tsched_frames;
1972 pa_bool_t use_mmap = TRUE, b, use_tsched = TRUE, d, ignore_dB = FALSE, namereg_fail = FALSE, deferred_volume = FALSE, set_formats = FALSE;
1973 pa_sink_new_data data;
1974 pa_alsa_profile_set *profile_set = NULL;
1979 ss = m->core->default_sample_spec;
1980 map = m->core->default_channel_map;
1981 if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_ALSA) < 0) {
1982 pa_log("Failed to parse sample specification and channel map");
1986 alternate_sample_rate = m->core->alternate_sample_rate;
1987 if (pa_modargs_get_alternate_sample_rate(ma, &alternate_sample_rate) < 0) {
1988 pa_log("Failed to parse alternate sample rate");
1992 frame_size = pa_frame_size(&ss);
1994 nfrags = m->core->default_n_fragments;
1995 frag_size = (uint32_t) pa_usec_to_bytes(m->core->default_fragment_size_msec*PA_USEC_PER_MSEC, &ss);
1997 frag_size = (uint32_t) frame_size;
1998 tsched_size = (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_BUFFER_USEC, &ss);
1999 tsched_watermark = (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_WATERMARK_USEC, &ss);
2001 if (pa_modargs_get_value_u32(ma, "fragments", &nfrags) < 0 ||
2002 pa_modargs_get_value_u32(ma, "fragment_size", &frag_size) < 0 ||
2003 pa_modargs_get_value_u32(ma, "tsched_buffer_size", &tsched_size) < 0 ||
2004 pa_modargs_get_value_u32(ma, "tsched_buffer_watermark", &tsched_watermark) < 0) {
2005 pa_log("Failed to parse buffer metrics");
2009 buffer_size = nfrags * frag_size;
2011 period_frames = frag_size/frame_size;
2012 buffer_frames = buffer_size/frame_size;
2013 tsched_frames = tsched_size/frame_size;
2015 if (pa_modargs_get_value_boolean(ma, "mmap", &use_mmap) < 0) {
2016 pa_log("Failed to parse mmap argument.");
2020 if (pa_modargs_get_value_boolean(ma, "tsched", &use_tsched) < 0) {
2021 pa_log("Failed to parse tsched argument.");
2025 if (pa_modargs_get_value_boolean(ma, "ignore_dB", &ignore_dB) < 0) {
2026 pa_log("Failed to parse ignore_dB argument.");
2030 rewind_safeguard = PA_MAX(DEFAULT_REWIND_SAFEGUARD_BYTES, pa_usec_to_bytes(DEFAULT_REWIND_SAFEGUARD_USEC, &ss));
2031 if (pa_modargs_get_value_u32(ma, "rewind_safeguard", &rewind_safeguard) < 0) {
2032 pa_log("Failed to parse rewind_safeguard argument");
2036 deferred_volume = m->core->deferred_volume;
2037 if (pa_modargs_get_value_boolean(ma, "deferred_volume", &deferred_volume) < 0) {
2038 pa_log("Failed to parse deferred_volume argument.");
2042 use_tsched = pa_alsa_may_tsched(use_tsched);
2044 u = pa_xnew0(struct userdata, 1);
2047 u->use_mmap = use_mmap;
2048 u->use_tsched = use_tsched;
2049 u->deferred_volume = deferred_volume;
2051 u->rewind_safeguard = rewind_safeguard;
2052 u->rtpoll = pa_rtpoll_new();
2053 pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll);
2055 u->smoother = pa_smoother_new(
2056 SMOOTHER_ADJUST_USEC,
2057 SMOOTHER_WINDOW_USEC,
2063 u->smoother_interval = SMOOTHER_MIN_INTERVAL;
2065 dev_id = pa_modargs_get_value(
2067 pa_modargs_get_value(ma, "device", DEFAULT_DEVICE));
2069 u->paths_dir = pa_xstrdup(pa_modargs_get_value(ma, "paths_dir", NULL));
2071 if (reserve_init(u, dev_id) < 0)
2074 if (reserve_monitor_init(u, dev_id) < 0)
2082 if (!(dev_id = pa_modargs_get_value(ma, "device_id", NULL))) {
2083 pa_log("device_id= not set");
2087 if (!(u->pcm_handle = pa_alsa_open_by_device_id_mapping(
2091 SND_PCM_STREAM_PLAYBACK,
2092 &period_frames, &buffer_frames, tsched_frames,
2096 } else if ((dev_id = pa_modargs_get_value(ma, "device_id", NULL))) {
2098 if (!(profile_set = pa_alsa_profile_set_new(NULL, &map)))
2101 if (!(u->pcm_handle = pa_alsa_open_by_device_id_auto(
2105 SND_PCM_STREAM_PLAYBACK,
2106 &period_frames, &buffer_frames, tsched_frames,
2107 &b, &d, profile_set, &mapping)))
2112 if (!(u->pcm_handle = pa_alsa_open_by_device_string(
2113 pa_modargs_get_value(ma, "device", DEFAULT_DEVICE),
2116 SND_PCM_STREAM_PLAYBACK,
2117 &period_frames, &buffer_frames, tsched_frames,
2122 pa_assert(u->device_name);
2123 pa_log_info("Successfully opened device %s.", u->device_name);
2125 if (pa_alsa_pcm_is_modem(u->pcm_handle)) {
2126 pa_log_notice("Device %s is modem, refusing further initialization.", u->device_name);
2131 pa_log_info("Selected mapping '%s' (%s).", mapping->description, mapping->name);
2133 if (use_mmap && !b) {
2134 pa_log_info("Device doesn't support mmap(), falling back to UNIX read/write mode.");
2135 u->use_mmap = use_mmap = FALSE;
2138 if (use_tsched && (!b || !d)) {
2139 pa_log_info("Cannot enable timer-based scheduling, falling back to sound IRQ scheduling.");
2140 u->use_tsched = use_tsched = FALSE;
2144 pa_log_info("Successfully enabled mmap() mode.");
2147 pa_log_info("Successfully enabled timer-based scheduling mode.");
2149 if (is_iec958(u) || is_hdmi(u))
2152 u->rates = pa_alsa_get_supported_rates(u->pcm_handle);
2154 pa_log_error("Failed to find any supported sample rates.");
2158 /* ALSA might tweak the sample spec, so recalculate the frame size */
2159 frame_size = pa_frame_size(&ss);
2161 find_mixer(u, mapping, pa_modargs_get_value(ma, "control", NULL), ignore_dB);
2163 pa_sink_new_data_init(&data);
2164 data.driver = driver;
2167 set_sink_name(&data, ma, dev_id, u->device_name, mapping);
2169 /* We need to give pa_modargs_get_value_boolean() a pointer to a local
2170 * variable instead of using &data.namereg_fail directly, because
2171 * data.namereg_fail is a bitfield and taking the address of a bitfield
2172 * variable is impossible. */
2173 namereg_fail = data.namereg_fail;
2174 if (pa_modargs_get_value_boolean(ma, "namereg_fail", &namereg_fail) < 0) {
2175 pa_log("Failed to parse namereg_fail argument.");
2176 pa_sink_new_data_done(&data);
2179 data.namereg_fail = namereg_fail;
2181 pa_sink_new_data_set_sample_spec(&data, &ss);
2182 pa_sink_new_data_set_channel_map(&data, &map);
2183 pa_sink_new_data_set_alternate_sample_rate(&data, alternate_sample_rate);
2185 pa_alsa_init_proplist_pcm(m->core, data.proplist, u->pcm_handle);
2186 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, u->device_name);
2187 pa_proplist_setf(data.proplist, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE, "%lu", (unsigned long) (buffer_frames * frame_size));
2188 pa_proplist_setf(data.proplist, PA_PROP_DEVICE_BUFFERING_FRAGMENT_SIZE, "%lu", (unsigned long) (period_frames * frame_size));
2189 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_ACCESS_MODE, u->use_tsched ? "mmap+timer" : (u->use_mmap ? "mmap" : "serial"));
2192 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_PROFILE_NAME, mapping->name);
2193 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_PROFILE_DESCRIPTION, mapping->description);
2196 pa_alsa_init_description(data.proplist);
2198 if (u->control_device)
2199 pa_alsa_init_proplist_ctl(data.proplist, u->control_device);
2201 if (pa_modargs_get_proplist(ma, "sink_properties", data.proplist, PA_UPDATE_REPLACE) < 0) {
2202 pa_log("Invalid properties");
2203 pa_sink_new_data_done(&data);
2207 if (u->mixer_path_set)
2208 pa_alsa_add_ports(&data.ports, u->mixer_path_set);
2210 u->sink = pa_sink_new(m->core, &data, PA_SINK_HARDWARE | PA_SINK_LATENCY | (u->use_tsched ? PA_SINK_DYNAMIC_LATENCY : 0) |
2211 (set_formats ? PA_SINK_SET_FORMATS : 0));
2212 pa_sink_new_data_done(&data);
2215 pa_log("Failed to create sink object");
2219 if (pa_modargs_get_value_u32(ma, "deferred_volume_safety_margin",
2220 &u->sink->thread_info.volume_change_safety_margin) < 0) {
2221 pa_log("Failed to parse deferred_volume_safety_margin parameter");
2225 if (pa_modargs_get_value_s32(ma, "deferred_volume_extra_delay",
2226 &u->sink->thread_info.volume_change_extra_delay) < 0) {
2227 pa_log("Failed to parse deferred_volume_extra_delay parameter");
2231 u->sink->parent.process_msg = sink_process_msg;
2233 u->sink->update_requested_latency = sink_update_requested_latency_cb;
2234 u->sink->set_state = sink_set_state_cb;
2235 u->sink->set_port = sink_set_port_cb;
2236 if (u->sink->alternate_sample_rate)
2237 u->sink->update_rate = sink_update_rate_cb;
2238 u->sink->userdata = u;
2240 pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
2241 pa_sink_set_rtpoll(u->sink, u->rtpoll);
2243 u->frame_size = frame_size;
2244 u->fragment_size = frag_size = (size_t) (period_frames * frame_size);
2245 u->hwbuf_size = buffer_size = (size_t) (buffer_frames * frame_size);
2246 pa_cvolume_mute(&u->hardware_volume, u->sink->sample_spec.channels);
2248 pa_log_info("Using %0.1f fragments of size %lu bytes (%0.2fms), buffer size is %lu bytes (%0.2fms)",
2249 (double) u->hwbuf_size / (double) u->fragment_size,
2250 (long unsigned) u->fragment_size,
2251 (double) pa_bytes_to_usec(u->fragment_size, &ss) / PA_USEC_PER_MSEC,
2252 (long unsigned) u->hwbuf_size,
2253 (double) pa_bytes_to_usec(u->hwbuf_size, &ss) / PA_USEC_PER_MSEC);
2255 pa_sink_set_max_request(u->sink, u->hwbuf_size);
2256 if (pa_alsa_pcm_is_hw(u->pcm_handle))
2257 pa_sink_set_max_rewind(u->sink, u->hwbuf_size);
2259 pa_log_info("Disabling rewind for device %s", u->device_name);
2260 pa_sink_set_max_rewind(u->sink, 0);
2263 if (u->use_tsched) {
2264 u->tsched_watermark_ref = tsched_watermark;
2265 reset_watermark(u, u->tsched_watermark_ref, &ss, FALSE);
2267 pa_sink_set_fixed_latency(u->sink, pa_bytes_to_usec(u->hwbuf_size, &ss));
2271 if (update_sw_params(u) < 0)
2274 if (setup_mixer(u, ignore_dB) < 0)
2277 pa_alsa_dump(PA_LOG_DEBUG, u->pcm_handle);
2279 if (!(u->thread = pa_thread_new("alsa-sink", thread_func, u))) {
2280 pa_log("Failed to create thread.");
2284 /* Get initial mixer settings */
2285 if (data.volume_is_set) {
2286 if (u->sink->set_volume)
2287 u->sink->set_volume(u->sink);
2289 if (u->sink->get_volume)
2290 u->sink->get_volume(u->sink);
2293 if (data.muted_is_set) {
2294 if (u->sink->set_mute)
2295 u->sink->set_mute(u->sink);
2297 if (u->sink->get_mute)
2298 u->sink->get_mute(u->sink);
2301 if ((data.volume_is_set || data.muted_is_set) && u->sink->write_volume)
2302 u->sink->write_volume(u->sink);
2305 /* For S/PDIF and HDMI, allow getting/setting custom formats */
2306 pa_format_info *format;
2308 /* To start with, we only support PCM formats. Other formats may be added
2309 * with pa_sink_set_formats().*/
2310 format = pa_format_info_new();
2311 format->encoding = PA_ENCODING_PCM;
2312 u->formats = pa_idxset_new(NULL, NULL);
2313 pa_idxset_put(u->formats, format, NULL);
2315 u->sink->get_formats = sink_get_formats;
2316 u->sink->set_formats = sink_set_formats;
2319 pa_sink_put(u->sink);
2322 pa_alsa_profile_set_free(profile_set);
2332 pa_alsa_profile_set_free(profile_set);
2337 static void userdata_free(struct userdata *u) {
2341 pa_sink_unlink(u->sink);
2344 pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
2345 pa_thread_free(u->thread);
2348 pa_thread_mq_done(&u->thread_mq);
2351 pa_sink_unref(u->sink);
2353 if (u->memchunk.memblock)
2354 pa_memblock_unref(u->memchunk.memblock);
2357 pa_alsa_mixer_pdata_free(u->mixer_pd);
2359 if (u->alsa_rtpoll_item)
2360 pa_rtpoll_item_free(u->alsa_rtpoll_item);
2363 pa_rtpoll_free(u->rtpoll);
2365 if (u->pcm_handle) {
2366 snd_pcm_drop(u->pcm_handle);
2367 snd_pcm_close(u->pcm_handle);
2371 pa_alsa_fdlist_free(u->mixer_fdl);
2373 if (u->mixer_path_set)
2374 pa_alsa_path_set_free(u->mixer_path_set);
2375 else if (u->mixer_path)
2376 pa_alsa_path_free(u->mixer_path);
2378 if (u->mixer_handle)
2379 snd_mixer_close(u->mixer_handle);
2382 pa_smoother_free(u->smoother);
2385 pa_idxset_free(u->formats, (pa_free2_cb_t) pa_format_info_free2, NULL);
2393 pa_xfree(u->device_name);
2394 pa_xfree(u->control_device);
2395 pa_xfree(u->paths_dir);
2399 void pa_alsa_sink_free(pa_sink *s) {
2402 pa_sink_assert_ref(s);
2403 pa_assert_se(u = s->userdata);