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, fixed_latency_range:1;
139 pa_bool_t first, after_rewind;
141 pa_rtpoll_item *alsa_rtpoll_item;
143 pa_smoother *smoother;
144 uint64_t write_count;
145 uint64_t since_start;
146 pa_usec_t smoother_interval;
147 pa_usec_t last_smoother_update;
151 pa_reserve_wrapper *reserve;
152 pa_hook_slot *reserve_slot;
153 pa_reserve_monitor_wrapper *monitor;
154 pa_hook_slot *monitor_slot;
157 static void userdata_free(struct userdata *u);
159 /* FIXME: Is there a better way to do this than device names? */
160 static pa_bool_t is_iec958(struct userdata *u) {
161 return (strncmp("iec958", u->device_name, 6) == 0);
164 static pa_bool_t is_hdmi(struct userdata *u) {
165 return (strncmp("hdmi", u->device_name, 4) == 0);
168 static pa_hook_result_t reserve_cb(pa_reserve_wrapper *r, void *forced, struct userdata *u) {
172 if (pa_sink_suspend(u->sink, TRUE, PA_SUSPEND_APPLICATION) < 0)
173 return PA_HOOK_CANCEL;
178 static void reserve_done(struct userdata *u) {
181 if (u->reserve_slot) {
182 pa_hook_slot_free(u->reserve_slot);
183 u->reserve_slot = NULL;
187 pa_reserve_wrapper_unref(u->reserve);
192 static void reserve_update(struct userdata *u) {
193 const char *description;
196 if (!u->sink || !u->reserve)
199 if ((description = pa_proplist_gets(u->sink->proplist, PA_PROP_DEVICE_DESCRIPTION)))
200 pa_reserve_wrapper_set_application_device_name(u->reserve, description);
203 static int reserve_init(struct userdata *u, const char *dname) {
212 if (pa_in_system_mode())
215 if (!(rname = pa_alsa_get_reserve_name(dname)))
218 /* We are resuming, try to lock the device */
219 u->reserve = pa_reserve_wrapper_get(u->core, rname);
227 pa_assert(!u->reserve_slot);
228 u->reserve_slot = pa_hook_connect(pa_reserve_wrapper_hook(u->reserve), PA_HOOK_NORMAL, (pa_hook_cb_t) reserve_cb, u);
233 static pa_hook_result_t monitor_cb(pa_reserve_monitor_wrapper *w, void* busy, struct userdata *u) {
239 b = PA_PTR_TO_UINT(busy) && !u->reserve;
241 pa_sink_suspend(u->sink, b, PA_SUSPEND_APPLICATION);
245 static void monitor_done(struct userdata *u) {
248 if (u->monitor_slot) {
249 pa_hook_slot_free(u->monitor_slot);
250 u->monitor_slot = NULL;
254 pa_reserve_monitor_wrapper_unref(u->monitor);
259 static int reserve_monitor_init(struct userdata *u, const char *dname) {
265 if (pa_in_system_mode())
268 if (!(rname = pa_alsa_get_reserve_name(dname)))
271 /* We are resuming, try to lock the device */
272 u->monitor = pa_reserve_monitor_wrapper_get(u->core, rname);
278 pa_assert(!u->monitor_slot);
279 u->monitor_slot = pa_hook_connect(pa_reserve_monitor_wrapper_hook(u->monitor), PA_HOOK_NORMAL, (pa_hook_cb_t) monitor_cb, u);
284 static void fix_min_sleep_wakeup(struct userdata *u) {
285 size_t max_use, max_use_2;
288 pa_assert(u->use_tsched);
290 max_use = u->hwbuf_size - u->hwbuf_unused;
291 max_use_2 = pa_frame_align(max_use/2, &u->sink->sample_spec);
293 u->min_sleep = pa_usec_to_bytes(TSCHED_MIN_SLEEP_USEC, &u->sink->sample_spec);
294 u->min_sleep = PA_CLAMP(u->min_sleep, u->frame_size, max_use_2);
296 u->min_wakeup = pa_usec_to_bytes(TSCHED_MIN_WAKEUP_USEC, &u->sink->sample_spec);
297 u->min_wakeup = PA_CLAMP(u->min_wakeup, u->frame_size, max_use_2);
300 static void fix_tsched_watermark(struct userdata *u) {
303 pa_assert(u->use_tsched);
305 max_use = u->hwbuf_size - u->hwbuf_unused;
307 if (u->tsched_watermark > max_use - u->min_sleep)
308 u->tsched_watermark = max_use - u->min_sleep;
310 if (u->tsched_watermark < u->min_wakeup)
311 u->tsched_watermark = u->min_wakeup;
314 static void increase_watermark(struct userdata *u) {
315 size_t old_watermark;
316 pa_usec_t old_min_latency, new_min_latency;
319 pa_assert(u->use_tsched);
321 /* First, just try to increase the watermark */
322 old_watermark = u->tsched_watermark;
323 u->tsched_watermark = PA_MIN(u->tsched_watermark * 2, u->tsched_watermark + u->watermark_inc_step);
324 fix_tsched_watermark(u);
326 if (old_watermark != u->tsched_watermark) {
327 pa_log_info("Increasing wakeup watermark to %0.2f ms",
328 (double) pa_bytes_to_usec(u->tsched_watermark, &u->sink->sample_spec) / PA_USEC_PER_MSEC);
332 /* Hmm, we cannot increase the watermark any further, hence let's
333 raise the latency, unless doing so was disabled in
335 if (u->fixed_latency_range)
338 old_min_latency = u->sink->thread_info.min_latency;
339 new_min_latency = PA_MIN(old_min_latency * 2, old_min_latency + TSCHED_WATERMARK_INC_STEP_USEC);
340 new_min_latency = PA_MIN(new_min_latency, u->sink->thread_info.max_latency);
342 if (old_min_latency != new_min_latency) {
343 pa_log_info("Increasing minimal latency to %0.2f ms",
344 (double) new_min_latency / PA_USEC_PER_MSEC);
346 pa_sink_set_latency_range_within_thread(u->sink, new_min_latency, u->sink->thread_info.max_latency);
349 /* When we reach this we're officialy fucked! */
352 static void decrease_watermark(struct userdata *u) {
353 size_t old_watermark;
357 pa_assert(u->use_tsched);
359 now = pa_rtclock_now();
361 if (u->watermark_dec_not_before <= 0)
364 if (u->watermark_dec_not_before > now)
367 old_watermark = u->tsched_watermark;
369 if (u->tsched_watermark < u->watermark_dec_step)
370 u->tsched_watermark = u->tsched_watermark / 2;
372 u->tsched_watermark = PA_MAX(u->tsched_watermark / 2, u->tsched_watermark - u->watermark_dec_step);
374 fix_tsched_watermark(u);
376 if (old_watermark != u->tsched_watermark)
377 pa_log_info("Decreasing wakeup watermark to %0.2f ms",
378 (double) pa_bytes_to_usec(u->tsched_watermark, &u->sink->sample_spec) / PA_USEC_PER_MSEC);
380 /* We don't change the latency range*/
383 u->watermark_dec_not_before = now + TSCHED_WATERMARK_VERIFY_AFTER_USEC;
386 static void hw_sleep_time(struct userdata *u, pa_usec_t *sleep_usec, pa_usec_t*process_usec) {
389 pa_assert(sleep_usec);
390 pa_assert(process_usec);
393 pa_assert(u->use_tsched);
395 usec = pa_sink_get_requested_latency_within_thread(u->sink);
397 if (usec == (pa_usec_t) -1)
398 usec = pa_bytes_to_usec(u->hwbuf_size, &u->sink->sample_spec);
400 wm = pa_bytes_to_usec(u->tsched_watermark, &u->sink->sample_spec);
405 *sleep_usec = usec - wm;
409 pa_log_debug("Buffer time: %lu ms; Sleep time: %lu ms; Process time: %lu ms",
410 (unsigned long) (usec / PA_USEC_PER_MSEC),
411 (unsigned long) (*sleep_usec / PA_USEC_PER_MSEC),
412 (unsigned long) (*process_usec / PA_USEC_PER_MSEC));
416 static int try_recover(struct userdata *u, const char *call, int err) {
421 pa_log_debug("%s: %s", call, pa_alsa_strerror(err));
423 pa_assert(err != -EAGAIN);
426 pa_log_debug("%s: Buffer underrun!", call);
428 if (err == -ESTRPIPE)
429 pa_log_debug("%s: System suspended!", call);
431 if ((err = snd_pcm_recover(u->pcm_handle, err, 1)) < 0) {
432 pa_log("%s: %s", call, pa_alsa_strerror(err));
441 static size_t check_left_to_play(struct userdata *u, size_t n_bytes, pa_bool_t on_timeout) {
443 pa_bool_t underrun = FALSE;
445 /* We use <= instead of < for this check here because an underrun
446 * only happens after the last sample was processed, not already when
447 * it is removed from the buffer. This is particularly important
448 * when block transfer is used. */
450 if (n_bytes <= u->hwbuf_size)
451 left_to_play = u->hwbuf_size - n_bytes;
454 /* We got a dropout. What a mess! */
462 if (!u->first && !u->after_rewind)
463 if (pa_log_ratelimit(PA_LOG_INFO))
464 pa_log_info("Underrun!");
468 pa_log_debug("%0.2f ms left to play; inc threshold = %0.2f ms; dec threshold = %0.2f ms",
469 (double) pa_bytes_to_usec(left_to_play, &u->sink->sample_spec) / PA_USEC_PER_MSEC,
470 (double) pa_bytes_to_usec(u->watermark_inc_threshold, &u->sink->sample_spec) / PA_USEC_PER_MSEC,
471 (double) pa_bytes_to_usec(u->watermark_dec_threshold, &u->sink->sample_spec) / PA_USEC_PER_MSEC);
475 pa_bool_t reset_not_before = TRUE;
477 if (!u->first && !u->after_rewind) {
478 if (underrun || left_to_play < u->watermark_inc_threshold)
479 increase_watermark(u);
480 else if (left_to_play > u->watermark_dec_threshold) {
481 reset_not_before = FALSE;
483 /* We decrease the watermark only if have actually
484 * been woken up by a timeout. If something else woke
485 * us up it's too easy to fulfill the deadlines... */
488 decrease_watermark(u);
492 if (reset_not_before)
493 u->watermark_dec_not_before = 0;
499 static int mmap_write(struct userdata *u, pa_usec_t *sleep_usec, pa_bool_t polled, pa_bool_t on_timeout) {
500 pa_bool_t work_done = FALSE;
501 pa_usec_t max_sleep_usec = 0, process_usec = 0;
506 pa_sink_assert_ref(u->sink);
509 hw_sleep_time(u, &max_sleep_usec, &process_usec);
515 pa_bool_t after_avail = TRUE;
517 /* First we determine how many samples are missing to fill the
518 * buffer up to 100% */
520 if (PA_UNLIKELY((n = pa_alsa_safe_avail(u->pcm_handle, u->hwbuf_size, &u->sink->sample_spec)) < 0)) {
522 if ((r = try_recover(u, "snd_pcm_avail", (int) n)) == 0)
528 n_bytes = (size_t) n * u->frame_size;
531 pa_log_debug("avail: %lu", (unsigned long) n_bytes);
534 left_to_play = check_left_to_play(u, n_bytes, on_timeout);
539 /* We won't fill up the playback buffer before at least
540 * half the sleep time is over because otherwise we might
541 * ask for more data from the clients then they expect. We
542 * need to guarantee that clients only have to keep around
543 * a single hw buffer length. */
546 pa_bytes_to_usec(left_to_play, &u->sink->sample_spec) > process_usec+max_sleep_usec/2) {
548 pa_log_debug("Not filling up, because too early.");
553 if (PA_UNLIKELY(n_bytes <= u->hwbuf_unused)) {
557 char *dn = pa_alsa_get_driver_name_by_pcm(u->pcm_handle);
558 pa_log(_("ALSA woke us up to write new data to the device, but there was actually nothing to write!\n"
559 "Most likely this is a bug in the ALSA driver '%s'. Please report this issue to the ALSA developers.\n"
560 "We were woken up with POLLOUT set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail."),
566 pa_log_debug("Not filling up, because not necessary.");
574 pa_log_debug("Not filling up, because already too many iterations.");
580 n_bytes -= u->hwbuf_unused;
584 pa_log_debug("Filling up");
591 const snd_pcm_channel_area_t *areas;
592 snd_pcm_uframes_t offset, frames;
593 snd_pcm_sframes_t sframes;
595 frames = (snd_pcm_uframes_t) (n_bytes / u->frame_size);
596 /* pa_log_debug("%lu frames to write", (unsigned long) frames); */
598 if (PA_UNLIKELY((err = pa_alsa_safe_mmap_begin(u->pcm_handle, &areas, &offset, &frames, u->hwbuf_size, &u->sink->sample_spec)) < 0)) {
600 if (!after_avail && err == -EAGAIN)
603 if ((r = try_recover(u, "snd_pcm_mmap_begin", err)) == 0)
609 /* Make sure that if these memblocks need to be copied they will fit into one slot */
610 if (frames > pa_mempool_block_size_max(u->core->mempool)/u->frame_size)
611 frames = pa_mempool_block_size_max(u->core->mempool)/u->frame_size;
613 if (!after_avail && frames == 0)
616 pa_assert(frames > 0);
619 /* Check these are multiples of 8 bit */
620 pa_assert((areas[0].first & 7) == 0);
621 pa_assert((areas[0].step & 7)== 0);
623 /* We assume a single interleaved memory buffer */
624 pa_assert((areas[0].first >> 3) == 0);
625 pa_assert((areas[0].step >> 3) == u->frame_size);
627 p = (uint8_t*) areas[0].addr + (offset * u->frame_size);
629 chunk.memblock = pa_memblock_new_fixed(u->core->mempool, p, frames * u->frame_size, TRUE);
630 chunk.length = pa_memblock_get_length(chunk.memblock);
633 pa_sink_render_into_full(u->sink, &chunk);
634 pa_memblock_unref_fixed(chunk.memblock);
636 if (PA_UNLIKELY((sframes = snd_pcm_mmap_commit(u->pcm_handle, offset, frames)) < 0)) {
638 if (!after_avail && (int) sframes == -EAGAIN)
641 if ((r = try_recover(u, "snd_pcm_mmap_commit", (int) sframes)) == 0)
649 u->write_count += frames * u->frame_size;
650 u->since_start += frames * u->frame_size;
653 pa_log_debug("Wrote %lu bytes (of possible %lu bytes)", (unsigned long) (frames * u->frame_size), (unsigned long) n_bytes);
656 if ((size_t) frames * u->frame_size >= n_bytes)
659 n_bytes -= (size_t) frames * u->frame_size;
664 *sleep_usec = pa_bytes_to_usec(left_to_play, &u->sink->sample_spec);
665 process_usec = pa_bytes_to_usec(u->tsched_watermark, &u->sink->sample_spec);
667 if (*sleep_usec > process_usec)
668 *sleep_usec -= process_usec;
674 return work_done ? 1 : 0;
677 static int unix_write(struct userdata *u, pa_usec_t *sleep_usec, pa_bool_t polled, pa_bool_t on_timeout) {
678 pa_bool_t work_done = FALSE;
679 pa_usec_t max_sleep_usec = 0, process_usec = 0;
684 pa_sink_assert_ref(u->sink);
687 hw_sleep_time(u, &max_sleep_usec, &process_usec);
693 pa_bool_t after_avail = TRUE;
695 if (PA_UNLIKELY((n = pa_alsa_safe_avail(u->pcm_handle, u->hwbuf_size, &u->sink->sample_spec)) < 0)) {
697 if ((r = try_recover(u, "snd_pcm_avail", (int) n)) == 0)
703 n_bytes = (size_t) n * u->frame_size;
704 left_to_play = check_left_to_play(u, n_bytes, on_timeout);
709 /* We won't fill up the playback buffer before at least
710 * half the sleep time is over because otherwise we might
711 * ask for more data from the clients then they expect. We
712 * need to guarantee that clients only have to keep around
713 * a single hw buffer length. */
716 pa_bytes_to_usec(left_to_play, &u->sink->sample_spec) > process_usec+max_sleep_usec/2)
719 if (PA_UNLIKELY(n_bytes <= u->hwbuf_unused)) {
723 char *dn = pa_alsa_get_driver_name_by_pcm(u->pcm_handle);
724 pa_log(_("ALSA woke us up to write new data to the device, but there was actually nothing to write!\n"
725 "Most likely this is a bug in the ALSA driver '%s'. Please report this issue to the ALSA developers.\n"
726 "We were woken up with POLLOUT set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail."),
736 pa_log_debug("Not filling up, because already too many iterations.");
742 n_bytes -= u->hwbuf_unused;
746 snd_pcm_sframes_t frames;
749 /* pa_log_debug("%lu frames to write", (unsigned long) frames); */
751 if (u->memchunk.length <= 0)
752 pa_sink_render(u->sink, n_bytes, &u->memchunk);
754 pa_assert(u->memchunk.length > 0);
756 frames = (snd_pcm_sframes_t) (u->memchunk.length / u->frame_size);
758 if (frames > (snd_pcm_sframes_t) (n_bytes/u->frame_size))
759 frames = (snd_pcm_sframes_t) (n_bytes/u->frame_size);
761 p = pa_memblock_acquire(u->memchunk.memblock);
762 frames = snd_pcm_writei(u->pcm_handle, (const uint8_t*) p + u->memchunk.index, (snd_pcm_uframes_t) frames);
763 pa_memblock_release(u->memchunk.memblock);
765 if (PA_UNLIKELY(frames < 0)) {
767 if (!after_avail && (int) frames == -EAGAIN)
770 if ((r = try_recover(u, "snd_pcm_writei", (int) frames)) == 0)
776 if (!after_avail && frames == 0)
779 pa_assert(frames > 0);
782 u->memchunk.index += (size_t) frames * u->frame_size;
783 u->memchunk.length -= (size_t) frames * u->frame_size;
785 if (u->memchunk.length <= 0) {
786 pa_memblock_unref(u->memchunk.memblock);
787 pa_memchunk_reset(&u->memchunk);
792 u->write_count += frames * u->frame_size;
793 u->since_start += frames * u->frame_size;
795 /* pa_log_debug("wrote %lu frames", (unsigned long) frames); */
797 if ((size_t) frames * u->frame_size >= n_bytes)
800 n_bytes -= (size_t) frames * u->frame_size;
805 *sleep_usec = pa_bytes_to_usec(left_to_play, &u->sink->sample_spec);
806 process_usec = pa_bytes_to_usec(u->tsched_watermark, &u->sink->sample_spec);
808 if (*sleep_usec > process_usec)
809 *sleep_usec -= process_usec;
815 return work_done ? 1 : 0;
818 static void update_smoother(struct userdata *u) {
819 snd_pcm_sframes_t delay = 0;
822 pa_usec_t now1 = 0, now2;
823 snd_pcm_status_t *status;
825 snd_pcm_status_alloca(&status);
828 pa_assert(u->pcm_handle);
830 /* Let's update the time smoother */
832 if (PA_UNLIKELY((err = pa_alsa_safe_delay(u->pcm_handle, &delay, u->hwbuf_size, &u->sink->sample_spec, FALSE)) < 0)) {
833 pa_log_warn("Failed to query DSP status data: %s", pa_alsa_strerror(err));
837 if (PA_UNLIKELY((err = snd_pcm_status(u->pcm_handle, status)) < 0))
838 pa_log_warn("Failed to get timestamp: %s", pa_alsa_strerror(err));
840 snd_htimestamp_t htstamp = { 0, 0 };
841 snd_pcm_status_get_htstamp(status, &htstamp);
842 now1 = pa_timespec_load(&htstamp);
845 /* Hmm, if the timestamp is 0, then it wasn't set and we take the current time */
847 now1 = pa_rtclock_now();
849 /* check if the time since the last update is bigger than the interval */
850 if (u->last_smoother_update > 0)
851 if (u->last_smoother_update + u->smoother_interval > now1)
854 position = (int64_t) u->write_count - ((int64_t) delay * (int64_t) u->frame_size);
856 if (PA_UNLIKELY(position < 0))
859 now2 = pa_bytes_to_usec((uint64_t) position, &u->sink->sample_spec);
861 pa_smoother_put(u->smoother, now1, now2);
863 u->last_smoother_update = now1;
864 /* exponentially increase the update interval up to the MAX limit */
865 u->smoother_interval = PA_MIN (u->smoother_interval * 2, SMOOTHER_MAX_INTERVAL);
868 static pa_usec_t sink_get_latency(struct userdata *u) {
871 pa_usec_t now1, now2;
875 now1 = pa_rtclock_now();
876 now2 = pa_smoother_get(u->smoother, now1);
878 delay = (int64_t) pa_bytes_to_usec(u->write_count, &u->sink->sample_spec) - (int64_t) now2;
880 r = delay >= 0 ? (pa_usec_t) delay : 0;
882 if (u->memchunk.memblock)
883 r += pa_bytes_to_usec(u->memchunk.length, &u->sink->sample_spec);
888 static int build_pollfd(struct userdata *u) {
890 pa_assert(u->pcm_handle);
892 if (u->alsa_rtpoll_item)
893 pa_rtpoll_item_free(u->alsa_rtpoll_item);
895 if (!(u->alsa_rtpoll_item = pa_alsa_build_pollfd(u->pcm_handle, u->rtpoll)))
901 /* Called from IO context */
902 static int suspend(struct userdata *u) {
904 pa_assert(u->pcm_handle);
906 pa_smoother_pause(u->smoother, pa_rtclock_now());
908 /* Let's suspend -- we don't call snd_pcm_drain() here since that might
909 * take awfully long with our long buffer sizes today. */
910 snd_pcm_close(u->pcm_handle);
911 u->pcm_handle = NULL;
913 if (u->alsa_rtpoll_item) {
914 pa_rtpoll_item_free(u->alsa_rtpoll_item);
915 u->alsa_rtpoll_item = NULL;
918 /* We reset max_rewind/max_request here to make sure that while we
919 * are suspended the old max_request/max_rewind values set before
920 * the suspend can influence the per-stream buffer of newly
921 * created streams, without their requirements having any
922 * influence on them. */
923 pa_sink_set_max_rewind_within_thread(u->sink, 0);
924 pa_sink_set_max_request_within_thread(u->sink, 0);
926 pa_log_info("Device suspended...");
931 /* Called from IO context */
932 static int update_sw_params(struct userdata *u) {
933 snd_pcm_uframes_t avail_min;
938 /* Use the full buffer if no one asked us for anything specific */
944 if ((latency = pa_sink_get_requested_latency_within_thread(u->sink)) != (pa_usec_t) -1) {
947 pa_log_debug("Latency set to %0.2fms", (double) latency / PA_USEC_PER_MSEC);
949 b = pa_usec_to_bytes(latency, &u->sink->sample_spec);
951 /* We need at least one sample in our buffer */
953 if (PA_UNLIKELY(b < u->frame_size))
956 u->hwbuf_unused = PA_LIKELY(b < u->hwbuf_size) ? (u->hwbuf_size - b) : 0;
959 fix_min_sleep_wakeup(u);
960 fix_tsched_watermark(u);
963 pa_log_debug("hwbuf_unused=%lu", (unsigned long) u->hwbuf_unused);
965 /* We need at last one frame in the used part of the buffer */
966 avail_min = (snd_pcm_uframes_t) u->hwbuf_unused / u->frame_size + 1;
969 pa_usec_t sleep_usec, process_usec;
971 hw_sleep_time(u, &sleep_usec, &process_usec);
972 avail_min += pa_usec_to_bytes(sleep_usec, &u->sink->sample_spec) / u->frame_size;
975 pa_log_debug("setting avail_min=%lu", (unsigned long) avail_min);
977 if ((err = pa_alsa_set_sw_params(u->pcm_handle, avail_min, !u->use_tsched)) < 0) {
978 pa_log("Failed to set software parameters: %s", pa_alsa_strerror(err));
982 pa_sink_set_max_request_within_thread(u->sink, u->hwbuf_size - u->hwbuf_unused);
983 if (pa_alsa_pcm_is_hw(u->pcm_handle))
984 pa_sink_set_max_rewind_within_thread(u->sink, u->hwbuf_size);
986 pa_log_info("Disabling rewind_within_thread for device %s", u->device_name);
987 pa_sink_set_max_rewind_within_thread(u->sink, 0);
993 /* Called from IO Context on unsuspend or from main thread when creating sink */
994 static void reset_watermark(struct userdata *u, size_t tsched_watermark, pa_sample_spec *ss,
997 u->tsched_watermark = pa_usec_to_bytes_round_up(pa_bytes_to_usec_round_up(tsched_watermark, ss),
998 &u->sink->sample_spec);
1000 u->watermark_inc_step = pa_usec_to_bytes(TSCHED_WATERMARK_INC_STEP_USEC, &u->sink->sample_spec);
1001 u->watermark_dec_step = pa_usec_to_bytes(TSCHED_WATERMARK_DEC_STEP_USEC, &u->sink->sample_spec);
1003 u->watermark_inc_threshold = pa_usec_to_bytes_round_up(TSCHED_WATERMARK_INC_THRESHOLD_USEC, &u->sink->sample_spec);
1004 u->watermark_dec_threshold = pa_usec_to_bytes_round_up(TSCHED_WATERMARK_DEC_THRESHOLD_USEC, &u->sink->sample_spec);
1006 fix_min_sleep_wakeup(u);
1007 fix_tsched_watermark(u);
1010 pa_sink_set_latency_range_within_thread(u->sink,
1012 pa_bytes_to_usec(u->hwbuf_size, ss));
1014 pa_sink_set_latency_range(u->sink,
1016 pa_bytes_to_usec(u->hwbuf_size, ss));
1018 /* work-around assert in pa_sink_set_latency_within_thead,
1019 keep track of min_latency and reuse it when
1020 this routine is called from IO context */
1021 u->min_latency_ref = u->sink->thread_info.min_latency;
1024 pa_log_info("Time scheduling watermark is %0.2fms",
1025 (double) pa_bytes_to_usec(u->tsched_watermark, ss) / PA_USEC_PER_MSEC);
1028 /* Called from IO context */
1029 static int unsuspend(struct userdata *u) {
1033 snd_pcm_uframes_t period_size, buffer_size;
1034 char *device_name = NULL;
1037 pa_assert(!u->pcm_handle);
1039 pa_log_info("Trying resume...");
1041 if ((is_iec958(u) || is_hdmi(u)) && pa_sink_is_passthrough(u->sink)) {
1042 /* Need to open device in NONAUDIO mode */
1043 int len = strlen(u->device_name) + 8;
1045 device_name = pa_xmalloc(len);
1046 pa_snprintf(device_name, len, "%s,AES0=6", u->device_name);
1049 if ((err = snd_pcm_open(&u->pcm_handle, device_name ? device_name : u->device_name, SND_PCM_STREAM_PLAYBACK,
1051 SND_PCM_NO_AUTO_RESAMPLE|
1052 SND_PCM_NO_AUTO_CHANNELS|
1053 SND_PCM_NO_AUTO_FORMAT)) < 0) {
1054 pa_log("Error opening PCM device %s: %s", u->device_name, pa_alsa_strerror(err));
1058 ss = u->sink->sample_spec;
1059 period_size = u->fragment_size / u->frame_size;
1060 buffer_size = u->hwbuf_size / u->frame_size;
1064 if ((err = pa_alsa_set_hw_params(u->pcm_handle, &ss, &period_size, &buffer_size, 0, &b, &d, TRUE)) < 0) {
1065 pa_log("Failed to set hardware parameters: %s", pa_alsa_strerror(err));
1069 if (b != u->use_mmap || d != u->use_tsched) {
1070 pa_log_warn("Resume failed, couldn't get original access mode.");
1074 if (!pa_sample_spec_equal(&ss, &u->sink->sample_spec)) {
1075 pa_log_warn("Resume failed, couldn't restore original sample settings.");
1079 if (period_size*u->frame_size != u->fragment_size ||
1080 buffer_size*u->frame_size != u->hwbuf_size) {
1081 pa_log_warn("Resume failed, couldn't restore original fragment settings. (Old: %lu/%lu, New %lu/%lu)",
1082 (unsigned long) u->hwbuf_size, (unsigned long) u->fragment_size,
1083 (unsigned long) (buffer_size*u->frame_size), (unsigned long) (period_size*u->frame_size));
1087 if (update_sw_params(u) < 0)
1090 if (build_pollfd(u) < 0)
1094 pa_smoother_reset(u->smoother, pa_rtclock_now(), TRUE);
1095 u->smoother_interval = SMOOTHER_MIN_INTERVAL;
1096 u->last_smoother_update = 0;
1101 /* reset the watermark to the value defined when sink was created */
1103 reset_watermark(u, u->tsched_watermark_ref, &u->sink->sample_spec, TRUE);
1105 pa_log_info("Resumed successfully...");
1107 pa_xfree(device_name);
1111 if (u->pcm_handle) {
1112 snd_pcm_close(u->pcm_handle);
1113 u->pcm_handle = NULL;
1116 pa_xfree(device_name);
1121 /* Called from IO context */
1122 static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
1123 struct userdata *u = PA_SINK(o)->userdata;
1127 case PA_SINK_MESSAGE_GET_LATENCY: {
1131 r = sink_get_latency(u);
1133 *((pa_usec_t*) data) = r;
1138 case PA_SINK_MESSAGE_SET_STATE:
1140 switch ((pa_sink_state_t) PA_PTR_TO_UINT(data)) {
1142 case PA_SINK_SUSPENDED: {
1145 pa_assert(PA_SINK_IS_OPENED(u->sink->thread_info.state));
1147 if ((r = suspend(u)) < 0)
1154 case PA_SINK_RUNNING: {
1157 if (u->sink->thread_info.state == PA_SINK_INIT) {
1158 if (build_pollfd(u) < 0)
1162 if (u->sink->thread_info.state == PA_SINK_SUSPENDED) {
1163 if ((r = unsuspend(u)) < 0)
1170 case PA_SINK_UNLINKED:
1172 case PA_SINK_INVALID_STATE:
1179 return pa_sink_process_msg(o, code, data, offset, chunk);
1182 /* Called from main context */
1183 static int sink_set_state_cb(pa_sink *s, pa_sink_state_t new_state) {
1184 pa_sink_state_t old_state;
1187 pa_sink_assert_ref(s);
1188 pa_assert_se(u = s->userdata);
1190 old_state = pa_sink_get_state(u->sink);
1192 if (PA_SINK_IS_OPENED(old_state) && new_state == PA_SINK_SUSPENDED)
1194 else if (old_state == PA_SINK_SUSPENDED && PA_SINK_IS_OPENED(new_state))
1195 if (reserve_init(u, u->device_name) < 0)
1196 return -PA_ERR_BUSY;
1201 static int ctl_mixer_callback(snd_mixer_elem_t *elem, unsigned int mask) {
1202 struct userdata *u = snd_mixer_elem_get_callback_private(elem);
1205 pa_assert(u->mixer_handle);
1207 if (mask == SND_CTL_EVENT_MASK_REMOVE)
1210 if (!PA_SINK_IS_LINKED(u->sink->state))
1213 if (u->sink->suspend_cause & PA_SUSPEND_SESSION)
1216 if (mask & SND_CTL_EVENT_MASK_VALUE) {
1217 pa_sink_get_volume(u->sink, TRUE);
1218 pa_sink_get_mute(u->sink, TRUE);
1224 static int io_mixer_callback(snd_mixer_elem_t *elem, unsigned int mask) {
1225 struct userdata *u = snd_mixer_elem_get_callback_private(elem);
1228 pa_assert(u->mixer_handle);
1230 if (mask == SND_CTL_EVENT_MASK_REMOVE)
1233 if (u->sink->suspend_cause & PA_SUSPEND_SESSION)
1236 if (mask & SND_CTL_EVENT_MASK_VALUE)
1237 pa_sink_update_volume_and_mute(u->sink);
1242 static void sink_get_volume_cb(pa_sink *s) {
1243 struct userdata *u = s->userdata;
1245 char vol_str_pcnt[PA_CVOLUME_SNPRINT_MAX];
1248 pa_assert(u->mixer_path);
1249 pa_assert(u->mixer_handle);
1251 if (pa_alsa_path_get_volume(u->mixer_path, u->mixer_handle, &s->channel_map, &r) < 0)
1254 /* Shift down by the base volume, so that 0dB becomes maximum volume */
1255 pa_sw_cvolume_multiply_scalar(&r, &r, s->base_volume);
1257 pa_log_debug("Read hardware volume: %s", pa_cvolume_snprint(vol_str_pcnt, sizeof(vol_str_pcnt), &r));
1259 if (u->mixer_path->has_dB) {
1260 char vol_str_db[PA_SW_CVOLUME_SNPRINT_DB_MAX];
1262 pa_log_debug(" in dB: %s", pa_sw_cvolume_snprint_dB(vol_str_db, sizeof(vol_str_db), &r));
1265 if (pa_cvolume_equal(&u->hardware_volume, &r))
1268 s->real_volume = u->hardware_volume = r;
1270 /* Hmm, so the hardware volume changed, let's reset our software volume */
1271 if (u->mixer_path->has_dB)
1272 pa_sink_set_soft_volume(s, NULL);
1275 static void sink_set_volume_cb(pa_sink *s) {
1276 struct userdata *u = s->userdata;
1278 char vol_str_pcnt[PA_CVOLUME_SNPRINT_MAX];
1279 pa_bool_t deferred_volume = !!(s->flags & PA_SINK_DEFERRED_VOLUME);
1282 pa_assert(u->mixer_path);
1283 pa_assert(u->mixer_handle);
1285 /* Shift up by the base volume */
1286 pa_sw_cvolume_divide_scalar(&r, &s->real_volume, s->base_volume);
1288 if (pa_alsa_path_set_volume(u->mixer_path, u->mixer_handle, &s->channel_map, &r, deferred_volume, !deferred_volume) < 0)
1291 /* Shift down by the base volume, so that 0dB becomes maximum volume */
1292 pa_sw_cvolume_multiply_scalar(&r, &r, s->base_volume);
1294 u->hardware_volume = r;
1296 if (u->mixer_path->has_dB) {
1297 pa_cvolume new_soft_volume;
1298 pa_bool_t accurate_enough;
1299 char vol_str_db[PA_SW_CVOLUME_SNPRINT_DB_MAX];
1301 /* Match exactly what the user requested by software */
1302 pa_sw_cvolume_divide(&new_soft_volume, &s->real_volume, &u->hardware_volume);
1304 /* If the adjustment to do in software is only minimal we
1305 * can skip it. That saves us CPU at the expense of a bit of
1308 (pa_cvolume_min(&new_soft_volume) >= (PA_VOLUME_NORM - VOLUME_ACCURACY)) &&
1309 (pa_cvolume_max(&new_soft_volume) <= (PA_VOLUME_NORM + VOLUME_ACCURACY));
1311 pa_log_debug("Requested volume: %s", pa_cvolume_snprint(vol_str_pcnt, sizeof(vol_str_pcnt), &s->real_volume));
1312 pa_log_debug(" in dB: %s", pa_sw_cvolume_snprint_dB(vol_str_db, sizeof(vol_str_db), &s->real_volume));
1313 pa_log_debug("Got hardware volume: %s", pa_cvolume_snprint(vol_str_pcnt, sizeof(vol_str_pcnt), &u->hardware_volume));
1314 pa_log_debug(" in dB: %s", pa_sw_cvolume_snprint_dB(vol_str_db, sizeof(vol_str_db), &u->hardware_volume));
1315 pa_log_debug("Calculated software volume: %s (accurate-enough=%s)",
1316 pa_cvolume_snprint(vol_str_pcnt, sizeof(vol_str_pcnt), &new_soft_volume),
1317 pa_yes_no(accurate_enough));
1318 pa_log_debug(" in dB: %s", pa_sw_cvolume_snprint_dB(vol_str_db, sizeof(vol_str_db), &new_soft_volume));
1320 if (!accurate_enough)
1321 s->soft_volume = new_soft_volume;
1324 pa_log_debug("Wrote hardware volume: %s", pa_cvolume_snprint(vol_str_pcnt, sizeof(vol_str_pcnt), &r));
1326 /* We can't match exactly what the user requested, hence let's
1327 * at least tell the user about it */
1333 static void sink_write_volume_cb(pa_sink *s) {
1334 struct userdata *u = s->userdata;
1335 pa_cvolume hw_vol = s->thread_info.current_hw_volume;
1338 pa_assert(u->mixer_path);
1339 pa_assert(u->mixer_handle);
1340 pa_assert(s->flags & PA_SINK_DEFERRED_VOLUME);
1342 /* Shift up by the base volume */
1343 pa_sw_cvolume_divide_scalar(&hw_vol, &hw_vol, s->base_volume);
1345 if (pa_alsa_path_set_volume(u->mixer_path, u->mixer_handle, &s->channel_map, &hw_vol, TRUE, TRUE) < 0)
1346 pa_log_error("Writing HW volume failed");
1349 pa_bool_t accurate_enough;
1351 /* Shift down by the base volume, so that 0dB becomes maximum volume */
1352 pa_sw_cvolume_multiply_scalar(&hw_vol, &hw_vol, s->base_volume);
1354 pa_sw_cvolume_divide(&tmp_vol, &hw_vol, &s->thread_info.current_hw_volume);
1356 (pa_cvolume_min(&tmp_vol) >= (PA_VOLUME_NORM - VOLUME_ACCURACY)) &&
1357 (pa_cvolume_max(&tmp_vol) <= (PA_VOLUME_NORM + VOLUME_ACCURACY));
1359 if (!accurate_enough) {
1361 char db[2][PA_SW_CVOLUME_SNPRINT_DB_MAX];
1362 char pcnt[2][PA_CVOLUME_SNPRINT_MAX];
1365 pa_log_debug("Written HW volume did not match with the request: %s (request) != %s",
1366 pa_cvolume_snprint(vol.pcnt[0], sizeof(vol.pcnt[0]), &s->thread_info.current_hw_volume),
1367 pa_cvolume_snprint(vol.pcnt[1], sizeof(vol.pcnt[1]), &hw_vol));
1368 pa_log_debug(" in dB: %s (request) != %s",
1369 pa_sw_cvolume_snprint_dB(vol.db[0], sizeof(vol.db[0]), &s->thread_info.current_hw_volume),
1370 pa_sw_cvolume_snprint_dB(vol.db[1], sizeof(vol.db[1]), &hw_vol));
1375 static void sink_get_mute_cb(pa_sink *s) {
1376 struct userdata *u = s->userdata;
1380 pa_assert(u->mixer_path);
1381 pa_assert(u->mixer_handle);
1383 if (pa_alsa_path_get_mute(u->mixer_path, u->mixer_handle, &b) < 0)
1389 static void sink_set_mute_cb(pa_sink *s) {
1390 struct userdata *u = s->userdata;
1393 pa_assert(u->mixer_path);
1394 pa_assert(u->mixer_handle);
1396 pa_alsa_path_set_mute(u->mixer_path, u->mixer_handle, s->muted);
1399 static void mixer_volume_init(struct userdata *u) {
1402 if (!u->mixer_path->has_volume) {
1403 pa_sink_set_write_volume_callback(u->sink, NULL);
1404 pa_sink_set_get_volume_callback(u->sink, NULL);
1405 pa_sink_set_set_volume_callback(u->sink, NULL);
1407 pa_log_info("Driver does not support hardware volume control, falling back to software volume control.");
1409 pa_sink_set_get_volume_callback(u->sink, sink_get_volume_cb);
1410 pa_sink_set_set_volume_callback(u->sink, sink_set_volume_cb);
1412 if (u->mixer_path->has_dB && u->deferred_volume) {
1413 pa_sink_set_write_volume_callback(u->sink, sink_write_volume_cb);
1414 pa_log_info("Successfully enabled deferred volume.");
1416 pa_sink_set_write_volume_callback(u->sink, NULL);
1418 if (u->mixer_path->has_dB) {
1419 pa_sink_enable_decibel_volume(u->sink, TRUE);
1420 pa_log_info("Hardware volume ranges from %0.2f dB to %0.2f dB.", u->mixer_path->min_dB, u->mixer_path->max_dB);
1422 u->sink->base_volume = pa_sw_volume_from_dB(-u->mixer_path->max_dB);
1423 u->sink->n_volume_steps = PA_VOLUME_NORM+1;
1425 pa_log_info("Fixing base volume to %0.2f dB", pa_sw_volume_to_dB(u->sink->base_volume));
1427 pa_sink_enable_decibel_volume(u->sink, FALSE);
1428 pa_log_info("Hardware volume ranges from %li to %li.", u->mixer_path->min_volume, u->mixer_path->max_volume);
1430 u->sink->base_volume = PA_VOLUME_NORM;
1431 u->sink->n_volume_steps = u->mixer_path->max_volume - u->mixer_path->min_volume + 1;
1434 pa_log_info("Using hardware volume control. Hardware dB scale %s.", u->mixer_path->has_dB ? "supported" : "not supported");
1437 if (!u->mixer_path->has_mute) {
1438 pa_sink_set_get_mute_callback(u->sink, NULL);
1439 pa_sink_set_set_mute_callback(u->sink, NULL);
1440 pa_log_info("Driver does not support hardware mute control, falling back to software mute control.");
1442 pa_sink_set_get_mute_callback(u->sink, sink_get_mute_cb);
1443 pa_sink_set_set_mute_callback(u->sink, sink_set_mute_cb);
1444 pa_log_info("Using hardware mute control.");
1448 static int sink_set_port_cb(pa_sink *s, pa_device_port *p) {
1449 struct userdata *u = s->userdata;
1450 pa_alsa_port_data *data;
1454 pa_assert(u->mixer_handle);
1456 data = PA_DEVICE_PORT_DATA(p);
1458 pa_assert_se(u->mixer_path = data->path);
1459 pa_alsa_path_select(u->mixer_path, u->mixer_handle);
1461 mixer_volume_init(u);
1464 pa_alsa_setting_select(data->setting, u->mixer_handle);
1468 if (s->flags & PA_SINK_DEFERRED_VOLUME) {
1469 if (s->write_volume)
1479 static void sink_update_requested_latency_cb(pa_sink *s) {
1480 struct userdata *u = s->userdata;
1483 pa_assert(u->use_tsched); /* only when timer scheduling is used
1484 * we can dynamically adjust the
1490 before = u->hwbuf_unused;
1491 update_sw_params(u);
1493 /* Let's check whether we now use only a smaller part of the
1494 buffer then before. If so, we need to make sure that subsequent
1495 rewinds are relative to the new maximum fill level and not to the
1496 current fill level. Thus, let's do a full rewind once, to clear
1499 if (u->hwbuf_unused > before) {
1500 pa_log_debug("Requesting rewind due to latency change.");
1501 pa_sink_request_rewind(s, (size_t) -1);
1505 static pa_idxset* sink_get_formats(pa_sink *s) {
1506 struct userdata *u = s->userdata;
1507 pa_idxset *ret = pa_idxset_new(NULL, NULL);
1513 PA_IDXSET_FOREACH(f, u->formats, idx) {
1514 pa_idxset_put(ret, pa_format_info_copy(f), NULL);
1520 static pa_bool_t sink_set_formats(pa_sink *s, pa_idxset *formats) {
1521 struct userdata *u = s->userdata;
1522 pa_format_info *f, *g;
1527 /* FIXME: also validate sample rates against what the device supports */
1528 PA_IDXSET_FOREACH(f, formats, idx) {
1529 if (is_iec958(u) && f->encoding == PA_ENCODING_EAC3_IEC61937)
1530 /* EAC3 cannot be sent over over S/PDIF */
1534 pa_idxset_free(u->formats, (pa_free2_cb_t) pa_format_info_free2, NULL);
1535 u->formats = pa_idxset_new(NULL, NULL);
1537 /* Note: the logic below won't apply if we're using software encoding.
1538 * This is fine for now since we don't support that via the passthrough
1539 * framework, but this must be changed if we do. */
1541 /* Count how many sample rates we support */
1542 for (idx = 0, n = 0; u->rates[idx]; idx++)
1545 /* First insert non-PCM formats since we prefer those. */
1546 PA_IDXSET_FOREACH(f, formats, idx) {
1547 if (!pa_format_info_is_pcm(f)) {
1548 g = pa_format_info_copy(f);
1549 pa_format_info_set_prop_int_array(g, PA_PROP_FORMAT_RATE, (int *) u->rates, n);
1550 pa_idxset_put(u->formats, g, NULL);
1554 /* Now add any PCM formats */
1555 PA_IDXSET_FOREACH(f, formats, idx) {
1556 if (pa_format_info_is_pcm(f)) {
1557 /* We don't set rates here since we'll just tack on a resampler for
1558 * unsupported rates */
1559 pa_idxset_put(u->formats, pa_format_info_copy(f), NULL);
1566 static pa_bool_t sink_update_rate_cb(pa_sink *s, uint32_t rate)
1568 struct userdata *u = s->userdata;
1570 pa_bool_t supported = FALSE;
1574 for (i = 0; u->rates[i]; i++) {
1575 if (u->rates[i] == rate) {
1582 pa_log_info("Sink does not support sample rate of %d Hz", rate);
1586 if (!PA_SINK_IS_OPENED(s->state)) {
1587 pa_log_info("Updating rate for device %s, new rate is %d",u->device_name, rate);
1588 u->sink->sample_spec.rate = rate;
1595 static int process_rewind(struct userdata *u) {
1596 snd_pcm_sframes_t unused;
1597 size_t rewind_nbytes, unused_nbytes, limit_nbytes;
1600 /* Figure out how much we shall rewind and reset the counter */
1601 rewind_nbytes = u->sink->thread_info.rewind_nbytes;
1603 pa_log_debug("Requested to rewind %lu bytes.", (unsigned long) rewind_nbytes);
1605 if (PA_UNLIKELY((unused = pa_alsa_safe_avail(u->pcm_handle, u->hwbuf_size, &u->sink->sample_spec)) < 0)) {
1606 pa_log("snd_pcm_avail() failed: %s", pa_alsa_strerror((int) unused));
1610 unused_nbytes = (size_t) unused * u->frame_size;
1612 /* make sure rewind doesn't go too far, can cause issues with DMAs */
1613 unused_nbytes += u->rewind_safeguard;
1615 if (u->hwbuf_size > unused_nbytes)
1616 limit_nbytes = u->hwbuf_size - unused_nbytes;
1620 if (rewind_nbytes > limit_nbytes)
1621 rewind_nbytes = limit_nbytes;
1623 if (rewind_nbytes > 0) {
1624 snd_pcm_sframes_t in_frames, out_frames;
1626 pa_log_debug("Limited to %lu bytes.", (unsigned long) rewind_nbytes);
1628 in_frames = (snd_pcm_sframes_t) (rewind_nbytes / u->frame_size);
1629 pa_log_debug("before: %lu", (unsigned long) in_frames);
1630 if ((out_frames = snd_pcm_rewind(u->pcm_handle, (snd_pcm_uframes_t) in_frames)) < 0) {
1631 pa_log("snd_pcm_rewind() failed: %s", pa_alsa_strerror((int) out_frames));
1632 if (try_recover(u, "process_rewind", out_frames) < 0)
1637 pa_log_debug("after: %lu", (unsigned long) out_frames);
1639 rewind_nbytes = (size_t) out_frames * u->frame_size;
1641 if (rewind_nbytes <= 0)
1642 pa_log_info("Tried rewind, but was apparently not possible.");
1644 u->write_count -= rewind_nbytes;
1645 pa_log_debug("Rewound %lu bytes.", (unsigned long) rewind_nbytes);
1646 pa_sink_process_rewind(u->sink, rewind_nbytes);
1648 u->after_rewind = TRUE;
1652 pa_log_debug("Mhmm, actually there is nothing to rewind.");
1654 pa_sink_process_rewind(u->sink, 0);
1658 static void thread_func(void *userdata) {
1659 struct userdata *u = userdata;
1660 unsigned short revents = 0;
1664 pa_log_debug("Thread starting up");
1666 if (u->core->realtime_scheduling)
1667 pa_make_realtime(u->core->realtime_priority);
1669 pa_thread_mq_install(&u->thread_mq);
1673 pa_usec_t rtpoll_sleep = 0;
1676 pa_log_debug("Loop");
1679 /* Render some data and write it to the dsp */
1680 if (PA_SINK_IS_OPENED(u->sink->thread_info.state)) {
1682 pa_usec_t sleep_usec = 0;
1683 pa_bool_t on_timeout = pa_rtpoll_timer_elapsed(u->rtpoll);
1685 if (PA_UNLIKELY(u->sink->thread_info.rewind_requested))
1686 if (process_rewind(u) < 0)
1690 work_done = mmap_write(u, &sleep_usec, revents & POLLOUT, on_timeout);
1692 work_done = unix_write(u, &sleep_usec, revents & POLLOUT, on_timeout);
1697 /* pa_log_debug("work_done = %i", work_done); */
1702 pa_log_info("Starting playback.");
1703 snd_pcm_start(u->pcm_handle);
1705 pa_smoother_resume(u->smoother, pa_rtclock_now(), TRUE);
1713 if (u->use_tsched) {
1716 if (u->since_start <= u->hwbuf_size) {
1718 /* USB devices on ALSA seem to hit a buffer
1719 * underrun during the first iterations much
1720 * quicker then we calculate here, probably due to
1721 * the transport latency. To accommodate for that
1722 * we artificially decrease the sleep time until
1723 * we have filled the buffer at least once
1726 if (pa_log_ratelimit(PA_LOG_DEBUG))
1727 pa_log_debug("Cutting sleep time for the initial iterations by half.");
1731 /* OK, the playback buffer is now full, let's
1732 * calculate when to wake up next */
1734 pa_log_debug("Waking up in %0.2fms (sound card clock).", (double) sleep_usec / PA_USEC_PER_MSEC);
1737 /* Convert from the sound card time domain to the
1738 * system time domain */
1739 cusec = pa_smoother_translate(u->smoother, pa_rtclock_now(), sleep_usec);
1742 pa_log_debug("Waking up in %0.2fms (system clock).", (double) cusec / PA_USEC_PER_MSEC);
1745 /* We don't trust the conversion, so we wake up whatever comes first */
1746 rtpoll_sleep = PA_MIN(sleep_usec, cusec);
1749 u->after_rewind = FALSE;
1753 if (u->sink->flags & PA_SINK_DEFERRED_VOLUME) {
1754 pa_usec_t volume_sleep;
1755 pa_sink_volume_change_apply(u->sink, &volume_sleep);
1756 if (volume_sleep > 0) {
1757 if (rtpoll_sleep > 0)
1758 rtpoll_sleep = PA_MIN(volume_sleep, rtpoll_sleep);
1760 rtpoll_sleep = volume_sleep;
1764 if (rtpoll_sleep > 0)
1765 pa_rtpoll_set_timer_relative(u->rtpoll, rtpoll_sleep);
1767 pa_rtpoll_set_timer_disabled(u->rtpoll);
1769 /* Hmm, nothing to do. Let's sleep */
1770 if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0)
1773 if (u->sink->flags & PA_SINK_DEFERRED_VOLUME)
1774 pa_sink_volume_change_apply(u->sink, NULL);
1779 /* Tell ALSA about this and process its response */
1780 if (PA_SINK_IS_OPENED(u->sink->thread_info.state)) {
1781 struct pollfd *pollfd;
1785 pollfd = pa_rtpoll_item_get_pollfd(u->alsa_rtpoll_item, &n);
1787 if ((err = snd_pcm_poll_descriptors_revents(u->pcm_handle, pollfd, n, &revents)) < 0) {
1788 pa_log("snd_pcm_poll_descriptors_revents() failed: %s", pa_alsa_strerror(err));
1792 if (revents & ~POLLOUT) {
1793 if (pa_alsa_recover_from_poll(u->pcm_handle, revents) < 0)
1799 } else if (revents && u->use_tsched && pa_log_ratelimit(PA_LOG_DEBUG))
1800 pa_log_debug("Wakeup from ALSA!");
1807 /* If this was no regular exit from the loop we have to continue
1808 * processing messages until we received PA_MESSAGE_SHUTDOWN */
1809 pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
1810 pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
1813 pa_log_debug("Thread shutting down");
1816 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) {
1822 pa_assert(device_name);
1824 if ((n = pa_modargs_get_value(ma, "sink_name", NULL))) {
1825 pa_sink_new_data_set_name(data, n);
1826 data->namereg_fail = TRUE;
1830 if ((n = pa_modargs_get_value(ma, "name", NULL)))
1831 data->namereg_fail = TRUE;
1833 n = device_id ? device_id : device_name;
1834 data->namereg_fail = FALSE;
1838 t = pa_sprintf_malloc("alsa_output.%s.%s", n, mapping->name);
1840 t = pa_sprintf_malloc("alsa_output.%s", n);
1842 pa_sink_new_data_set_name(data, t);
1846 static void find_mixer(struct userdata *u, pa_alsa_mapping *mapping, const char *element, pa_bool_t ignore_dB) {
1849 if (!mapping && !element)
1852 if (!(u->mixer_handle = pa_alsa_open_mixer_for_pcm(u->pcm_handle, &u->control_device, &hctl))) {
1853 pa_log_info("Failed to find a working mixer device.");
1859 if (!(u->mixer_path = pa_alsa_path_synthesize(element, PA_ALSA_DIRECTION_OUTPUT)))
1862 if (pa_alsa_path_probe(u->mixer_path, u->mixer_handle, hctl, ignore_dB) < 0)
1865 pa_log_debug("Probed mixer path %s:", u->mixer_path->name);
1866 pa_alsa_path_dump(u->mixer_path);
1867 } else if (!(u->mixer_path_set = mapping->output_path_set))
1874 if (u->mixer_path) {
1875 pa_alsa_path_free(u->mixer_path);
1876 u->mixer_path = NULL;
1879 if (u->mixer_handle) {
1880 snd_mixer_close(u->mixer_handle);
1881 u->mixer_handle = NULL;
1886 static int setup_mixer(struct userdata *u, pa_bool_t ignore_dB) {
1887 pa_bool_t need_mixer_callback = FALSE;
1891 if (!u->mixer_handle)
1894 if (u->sink->active_port) {
1895 pa_alsa_port_data *data;
1897 /* We have a list of supported paths, so let's activate the
1898 * one that has been chosen as active */
1900 data = PA_DEVICE_PORT_DATA(u->sink->active_port);
1901 u->mixer_path = data->path;
1903 pa_alsa_path_select(data->path, u->mixer_handle);
1906 pa_alsa_setting_select(data->setting, u->mixer_handle);
1910 if (!u->mixer_path && u->mixer_path_set)
1911 u->mixer_path = pa_hashmap_first(u->mixer_path_set->paths);
1913 if (u->mixer_path) {
1914 /* Hmm, we have only a single path, then let's activate it */
1916 pa_alsa_path_select(u->mixer_path, u->mixer_handle);
1918 if (u->mixer_path->settings)
1919 pa_alsa_setting_select(u->mixer_path->settings, u->mixer_handle);
1924 mixer_volume_init(u);
1926 /* Will we need to register callbacks? */
1927 if (u->mixer_path_set && u->mixer_path_set->paths) {
1931 PA_HASHMAP_FOREACH(p, u->mixer_path_set->paths, state) {
1932 if (p->has_volume || p->has_mute)
1933 need_mixer_callback = TRUE;
1936 else if (u->mixer_path)
1937 need_mixer_callback = u->mixer_path->has_volume || u->mixer_path->has_mute;
1939 if (need_mixer_callback) {
1940 int (*mixer_callback)(snd_mixer_elem_t *, unsigned int);
1941 if (u->sink->flags & PA_SINK_DEFERRED_VOLUME) {
1942 u->mixer_pd = pa_alsa_mixer_pdata_new();
1943 mixer_callback = io_mixer_callback;
1945 if (pa_alsa_set_mixer_rtpoll(u->mixer_pd, u->mixer_handle, u->rtpoll) < 0) {
1946 pa_log("Failed to initialize file descriptor monitoring");
1950 u->mixer_fdl = pa_alsa_fdlist_new();
1951 mixer_callback = ctl_mixer_callback;
1953 if (pa_alsa_fdlist_set_handle(u->mixer_fdl, u->mixer_handle, NULL, u->core->mainloop) < 0) {
1954 pa_log("Failed to initialize file descriptor monitoring");
1959 if (u->mixer_path_set)
1960 pa_alsa_path_set_set_callback(u->mixer_path_set, u->mixer_handle, mixer_callback, u);
1962 pa_alsa_path_set_callback(u->mixer_path, u->mixer_handle, mixer_callback, u);
1968 pa_sink *pa_alsa_sink_new(pa_module *m, pa_modargs *ma, const char*driver, pa_card *card, pa_alsa_mapping *mapping) {
1970 struct userdata *u = NULL;
1971 const char *dev_id = NULL;
1973 uint32_t alternate_sample_rate;
1975 uint32_t nfrags, frag_size, buffer_size, tsched_size, tsched_watermark, rewind_safeguard;
1976 snd_pcm_uframes_t period_frames, buffer_frames, tsched_frames;
1978 pa_bool_t use_mmap = TRUE, b, use_tsched = TRUE, d, ignore_dB = FALSE, namereg_fail = FALSE, deferred_volume = FALSE, set_formats = FALSE, fixed_latency_range = FALSE;
1979 pa_sink_new_data data;
1980 pa_alsa_profile_set *profile_set = NULL;
1985 ss = m->core->default_sample_spec;
1986 map = m->core->default_channel_map;
1987 if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_ALSA) < 0) {
1988 pa_log("Failed to parse sample specification and channel map");
1992 alternate_sample_rate = m->core->alternate_sample_rate;
1993 if (pa_modargs_get_alternate_sample_rate(ma, &alternate_sample_rate) < 0) {
1994 pa_log("Failed to parse alternate sample rate");
1998 frame_size = pa_frame_size(&ss);
2000 nfrags = m->core->default_n_fragments;
2001 frag_size = (uint32_t) pa_usec_to_bytes(m->core->default_fragment_size_msec*PA_USEC_PER_MSEC, &ss);
2003 frag_size = (uint32_t) frame_size;
2004 tsched_size = (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_BUFFER_USEC, &ss);
2005 tsched_watermark = (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_WATERMARK_USEC, &ss);
2007 if (pa_modargs_get_value_u32(ma, "fragments", &nfrags) < 0 ||
2008 pa_modargs_get_value_u32(ma, "fragment_size", &frag_size) < 0 ||
2009 pa_modargs_get_value_u32(ma, "tsched_buffer_size", &tsched_size) < 0 ||
2010 pa_modargs_get_value_u32(ma, "tsched_buffer_watermark", &tsched_watermark) < 0) {
2011 pa_log("Failed to parse buffer metrics");
2015 buffer_size = nfrags * frag_size;
2017 period_frames = frag_size/frame_size;
2018 buffer_frames = buffer_size/frame_size;
2019 tsched_frames = tsched_size/frame_size;
2021 if (pa_modargs_get_value_boolean(ma, "mmap", &use_mmap) < 0) {
2022 pa_log("Failed to parse mmap argument.");
2026 if (pa_modargs_get_value_boolean(ma, "tsched", &use_tsched) < 0) {
2027 pa_log("Failed to parse tsched argument.");
2031 if (pa_modargs_get_value_boolean(ma, "ignore_dB", &ignore_dB) < 0) {
2032 pa_log("Failed to parse ignore_dB argument.");
2036 rewind_safeguard = PA_MAX(DEFAULT_REWIND_SAFEGUARD_BYTES, pa_usec_to_bytes(DEFAULT_REWIND_SAFEGUARD_USEC, &ss));
2037 if (pa_modargs_get_value_u32(ma, "rewind_safeguard", &rewind_safeguard) < 0) {
2038 pa_log("Failed to parse rewind_safeguard argument");
2042 deferred_volume = m->core->deferred_volume;
2043 if (pa_modargs_get_value_boolean(ma, "deferred_volume", &deferred_volume) < 0) {
2044 pa_log("Failed to parse deferred_volume argument.");
2048 if (pa_modargs_get_value_boolean(ma, "fixed_latency_range", &fixed_latency_range) < 0) {
2049 pa_log("Failed to parse fixed_latency_range argument.");
2053 use_tsched = pa_alsa_may_tsched(use_tsched);
2055 u = pa_xnew0(struct userdata, 1);
2058 u->use_mmap = use_mmap;
2059 u->use_tsched = use_tsched;
2060 u->deferred_volume = deferred_volume;
2061 u->fixed_latency_range = fixed_latency_range;
2063 u->rewind_safeguard = rewind_safeguard;
2064 u->rtpoll = pa_rtpoll_new();
2065 pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll);
2067 u->smoother = pa_smoother_new(
2068 SMOOTHER_ADJUST_USEC,
2069 SMOOTHER_WINDOW_USEC,
2075 u->smoother_interval = SMOOTHER_MIN_INTERVAL;
2077 dev_id = pa_modargs_get_value(
2079 pa_modargs_get_value(ma, "device", DEFAULT_DEVICE));
2081 u->paths_dir = pa_xstrdup(pa_modargs_get_value(ma, "paths_dir", NULL));
2083 if (reserve_init(u, dev_id) < 0)
2086 if (reserve_monitor_init(u, dev_id) < 0)
2094 if (!(dev_id = pa_modargs_get_value(ma, "device_id", NULL))) {
2095 pa_log("device_id= not set");
2099 if (!(u->pcm_handle = pa_alsa_open_by_device_id_mapping(
2103 SND_PCM_STREAM_PLAYBACK,
2104 &period_frames, &buffer_frames, tsched_frames,
2108 } else if ((dev_id = pa_modargs_get_value(ma, "device_id", NULL))) {
2110 if (!(profile_set = pa_alsa_profile_set_new(NULL, &map)))
2113 if (!(u->pcm_handle = pa_alsa_open_by_device_id_auto(
2117 SND_PCM_STREAM_PLAYBACK,
2118 &period_frames, &buffer_frames, tsched_frames,
2119 &b, &d, profile_set, &mapping)))
2124 if (!(u->pcm_handle = pa_alsa_open_by_device_string(
2125 pa_modargs_get_value(ma, "device", DEFAULT_DEVICE),
2128 SND_PCM_STREAM_PLAYBACK,
2129 &period_frames, &buffer_frames, tsched_frames,
2134 pa_assert(u->device_name);
2135 pa_log_info("Successfully opened device %s.", u->device_name);
2137 if (pa_alsa_pcm_is_modem(u->pcm_handle)) {
2138 pa_log_notice("Device %s is modem, refusing further initialization.", u->device_name);
2143 pa_log_info("Selected mapping '%s' (%s).", mapping->description, mapping->name);
2145 if (use_mmap && !b) {
2146 pa_log_info("Device doesn't support mmap(), falling back to UNIX read/write mode.");
2147 u->use_mmap = use_mmap = FALSE;
2150 if (use_tsched && (!b || !d)) {
2151 pa_log_info("Cannot enable timer-based scheduling, falling back to sound IRQ scheduling.");
2152 u->use_tsched = use_tsched = FALSE;
2156 pa_log_info("Successfully enabled mmap() mode.");
2158 if (u->use_tsched) {
2159 pa_log_info("Successfully enabled timer-based scheduling mode.");
2161 if (u->fixed_latency_range)
2162 pa_log_info("Disabling latency range changes on underrun");
2165 if (is_iec958(u) || is_hdmi(u))
2168 u->rates = pa_alsa_get_supported_rates(u->pcm_handle);
2170 pa_log_error("Failed to find any supported sample rates.");
2174 /* ALSA might tweak the sample spec, so recalculate the frame size */
2175 frame_size = pa_frame_size(&ss);
2177 find_mixer(u, mapping, pa_modargs_get_value(ma, "control", NULL), ignore_dB);
2179 pa_sink_new_data_init(&data);
2180 data.driver = driver;
2183 set_sink_name(&data, ma, dev_id, u->device_name, mapping);
2185 /* We need to give pa_modargs_get_value_boolean() a pointer to a local
2186 * variable instead of using &data.namereg_fail directly, because
2187 * data.namereg_fail is a bitfield and taking the address of a bitfield
2188 * variable is impossible. */
2189 namereg_fail = data.namereg_fail;
2190 if (pa_modargs_get_value_boolean(ma, "namereg_fail", &namereg_fail) < 0) {
2191 pa_log("Failed to parse namereg_fail argument.");
2192 pa_sink_new_data_done(&data);
2195 data.namereg_fail = namereg_fail;
2197 pa_sink_new_data_set_sample_spec(&data, &ss);
2198 pa_sink_new_data_set_channel_map(&data, &map);
2199 pa_sink_new_data_set_alternate_sample_rate(&data, alternate_sample_rate);
2201 pa_alsa_init_proplist_pcm(m->core, data.proplist, u->pcm_handle);
2202 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, u->device_name);
2203 pa_proplist_setf(data.proplist, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE, "%lu", (unsigned long) (buffer_frames * frame_size));
2204 pa_proplist_setf(data.proplist, PA_PROP_DEVICE_BUFFERING_FRAGMENT_SIZE, "%lu", (unsigned long) (period_frames * frame_size));
2205 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_ACCESS_MODE, u->use_tsched ? "mmap+timer" : (u->use_mmap ? "mmap" : "serial"));
2208 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_PROFILE_NAME, mapping->name);
2209 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_PROFILE_DESCRIPTION, mapping->description);
2212 pa_alsa_init_description(data.proplist);
2214 if (u->control_device)
2215 pa_alsa_init_proplist_ctl(data.proplist, u->control_device);
2217 if (pa_modargs_get_proplist(ma, "sink_properties", data.proplist, PA_UPDATE_REPLACE) < 0) {
2218 pa_log("Invalid properties");
2219 pa_sink_new_data_done(&data);
2223 if (u->mixer_path_set)
2224 pa_alsa_add_ports(&data.ports, u->mixer_path_set, card);
2226 u->sink = pa_sink_new(m->core, &data, PA_SINK_HARDWARE | PA_SINK_LATENCY | (u->use_tsched ? PA_SINK_DYNAMIC_LATENCY : 0) |
2227 (set_formats ? PA_SINK_SET_FORMATS : 0));
2228 pa_sink_new_data_done(&data);
2231 pa_log("Failed to create sink object");
2235 if (pa_modargs_get_value_u32(ma, "deferred_volume_safety_margin",
2236 &u->sink->thread_info.volume_change_safety_margin) < 0) {
2237 pa_log("Failed to parse deferred_volume_safety_margin parameter");
2241 if (pa_modargs_get_value_s32(ma, "deferred_volume_extra_delay",
2242 &u->sink->thread_info.volume_change_extra_delay) < 0) {
2243 pa_log("Failed to parse deferred_volume_extra_delay parameter");
2247 u->sink->parent.process_msg = sink_process_msg;
2249 u->sink->update_requested_latency = sink_update_requested_latency_cb;
2250 u->sink->set_state = sink_set_state_cb;
2251 u->sink->set_port = sink_set_port_cb;
2252 if (u->sink->alternate_sample_rate)
2253 u->sink->update_rate = sink_update_rate_cb;
2254 u->sink->userdata = u;
2256 pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
2257 pa_sink_set_rtpoll(u->sink, u->rtpoll);
2259 u->frame_size = frame_size;
2260 u->fragment_size = frag_size = (size_t) (period_frames * frame_size);
2261 u->hwbuf_size = buffer_size = (size_t) (buffer_frames * frame_size);
2262 pa_cvolume_mute(&u->hardware_volume, u->sink->sample_spec.channels);
2264 pa_log_info("Using %0.1f fragments of size %lu bytes (%0.2fms), buffer size is %lu bytes (%0.2fms)",
2265 (double) u->hwbuf_size / (double) u->fragment_size,
2266 (long unsigned) u->fragment_size,
2267 (double) pa_bytes_to_usec(u->fragment_size, &ss) / PA_USEC_PER_MSEC,
2268 (long unsigned) u->hwbuf_size,
2269 (double) pa_bytes_to_usec(u->hwbuf_size, &ss) / PA_USEC_PER_MSEC);
2271 pa_sink_set_max_request(u->sink, u->hwbuf_size);
2272 if (pa_alsa_pcm_is_hw(u->pcm_handle))
2273 pa_sink_set_max_rewind(u->sink, u->hwbuf_size);
2275 pa_log_info("Disabling rewind for device %s", u->device_name);
2276 pa_sink_set_max_rewind(u->sink, 0);
2279 if (u->use_tsched) {
2280 u->tsched_watermark_ref = tsched_watermark;
2281 reset_watermark(u, u->tsched_watermark_ref, &ss, FALSE);
2283 pa_sink_set_fixed_latency(u->sink, pa_bytes_to_usec(u->hwbuf_size, &ss));
2287 if (update_sw_params(u) < 0)
2290 if (setup_mixer(u, ignore_dB) < 0)
2293 pa_alsa_dump(PA_LOG_DEBUG, u->pcm_handle);
2295 if (!(u->thread = pa_thread_new("alsa-sink", thread_func, u))) {
2296 pa_log("Failed to create thread.");
2300 /* Get initial mixer settings */
2301 if (data.volume_is_set) {
2302 if (u->sink->set_volume)
2303 u->sink->set_volume(u->sink);
2305 if (u->sink->get_volume)
2306 u->sink->get_volume(u->sink);
2309 if (data.muted_is_set) {
2310 if (u->sink->set_mute)
2311 u->sink->set_mute(u->sink);
2313 if (u->sink->get_mute)
2314 u->sink->get_mute(u->sink);
2317 if ((data.volume_is_set || data.muted_is_set) && u->sink->write_volume)
2318 u->sink->write_volume(u->sink);
2321 /* For S/PDIF and HDMI, allow getting/setting custom formats */
2322 pa_format_info *format;
2324 /* To start with, we only support PCM formats. Other formats may be added
2325 * with pa_sink_set_formats().*/
2326 format = pa_format_info_new();
2327 format->encoding = PA_ENCODING_PCM;
2328 u->formats = pa_idxset_new(NULL, NULL);
2329 pa_idxset_put(u->formats, format, NULL);
2331 u->sink->get_formats = sink_get_formats;
2332 u->sink->set_formats = sink_set_formats;
2335 pa_sink_put(u->sink);
2338 pa_alsa_profile_set_free(profile_set);
2348 pa_alsa_profile_set_free(profile_set);
2353 static void userdata_free(struct userdata *u) {
2357 pa_sink_unlink(u->sink);
2360 pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
2361 pa_thread_free(u->thread);
2364 pa_thread_mq_done(&u->thread_mq);
2367 pa_sink_unref(u->sink);
2369 if (u->memchunk.memblock)
2370 pa_memblock_unref(u->memchunk.memblock);
2373 pa_alsa_mixer_pdata_free(u->mixer_pd);
2375 if (u->alsa_rtpoll_item)
2376 pa_rtpoll_item_free(u->alsa_rtpoll_item);
2379 pa_rtpoll_free(u->rtpoll);
2381 if (u->pcm_handle) {
2382 snd_pcm_drop(u->pcm_handle);
2383 snd_pcm_close(u->pcm_handle);
2387 pa_alsa_fdlist_free(u->mixer_fdl);
2389 if (u->mixer_path && !u->mixer_path_set)
2390 pa_alsa_path_free(u->mixer_path);
2392 if (u->mixer_handle)
2393 snd_mixer_close(u->mixer_handle);
2396 pa_smoother_free(u->smoother);
2399 pa_idxset_free(u->formats, (pa_free2_cb_t) pa_format_info_free2, NULL);
2407 pa_xfree(u->device_name);
2408 pa_xfree(u->control_device);
2409 pa_xfree(u->paths_dir);
2413 void pa_alsa_sink_free(pa_sink *s) {
2416 pa_sink_assert_ref(s);
2417 pa_assert_se(u = s->userdata);