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 #include <pulse/xmalloc.h>
32 #include <pulse/util.h>
33 #include <pulse/timeval.h>
34 #include <pulse/i18n.h>
36 #include <pulsecore/core-error.h>
37 #include <pulsecore/core.h>
38 #include <pulsecore/module.h>
39 #include <pulsecore/memchunk.h>
40 #include <pulsecore/sink.h>
41 #include <pulsecore/modargs.h>
42 #include <pulsecore/core-util.h>
43 #include <pulsecore/sample-util.h>
44 #include <pulsecore/log.h>
45 #include <pulsecore/macro.h>
46 #include <pulsecore/thread.h>
47 #include <pulsecore/core-error.h>
48 #include <pulsecore/thread-mq.h>
49 #include <pulsecore/rtpoll.h>
50 #include <pulsecore/time-smoother.h>
51 #include <pulsecore/rtclock.h>
53 #include <modules/reserve-wrap.h>
55 #include "alsa-util.h"
56 #include "alsa-source.h"
58 /* #define DEBUG_TIMING */
60 #define DEFAULT_DEVICE "default"
61 #define DEFAULT_TSCHED_BUFFER_USEC (2*PA_USEC_PER_SEC) /* 2s */
62 #define DEFAULT_TSCHED_WATERMARK_USEC (20*PA_USEC_PER_MSEC) /* 20ms */
63 #define TSCHED_WATERMARK_STEP_USEC (10*PA_USEC_PER_MSEC) /* 10ms */
64 #define TSCHED_MIN_SLEEP_USEC (10*PA_USEC_PER_MSEC) /* 10ms */
65 #define TSCHED_MIN_WAKEUP_USEC (4*PA_USEC_PER_MSEC) /* 4ms */
73 pa_thread_mq thread_mq;
76 snd_pcm_t *pcm_handle;
78 pa_alsa_fdlist *mixer_fdl;
79 snd_mixer_t *mixer_handle;
80 pa_alsa_path_set *mixer_path_set;
81 pa_alsa_path *mixer_path;
83 pa_cvolume hardware_volume;
100 pa_bool_t use_mmap:1, use_tsched:1;
102 pa_rtpoll_item *alsa_rtpoll_item;
104 snd_mixer_selem_channel_id_t mixer_map[SND_MIXER_SCHN_LAST];
106 pa_smoother *smoother;
109 pa_reserve_wrapper *reserve;
110 pa_hook_slot *reserve_slot;
111 pa_reserve_monitor_wrapper *monitor;
112 pa_hook_slot *monitor_slot;
115 static void userdata_free(struct userdata *u);
117 static pa_hook_result_t reserve_cb(pa_reserve_wrapper *r, void *forced, struct userdata *u) {
121 if (pa_source_suspend(u->source, TRUE, PA_SUSPEND_APPLICATION) < 0)
122 return PA_HOOK_CANCEL;
127 static void reserve_done(struct userdata *u) {
130 if (u->reserve_slot) {
131 pa_hook_slot_free(u->reserve_slot);
132 u->reserve_slot = NULL;
136 pa_reserve_wrapper_unref(u->reserve);
141 static void reserve_update(struct userdata *u) {
142 const char *description;
145 if (!u->source || !u->reserve)
148 if ((description = pa_proplist_gets(u->source->proplist, PA_PROP_DEVICE_DESCRIPTION)))
149 pa_reserve_wrapper_set_application_device_name(u->reserve, description);
152 static int reserve_init(struct userdata *u, const char *dname) {
161 if (pa_in_system_mode())
164 /* We are resuming, try to lock the device */
165 if (!(rname = pa_alsa_get_reserve_name(dname)))
168 u->reserve = pa_reserve_wrapper_get(u->core, rname);
176 pa_assert(!u->reserve_slot);
177 u->reserve_slot = pa_hook_connect(pa_reserve_wrapper_hook(u->reserve), PA_HOOK_NORMAL, (pa_hook_cb_t) reserve_cb, u);
182 static pa_hook_result_t monitor_cb(pa_reserve_monitor_wrapper *w, void* busy, struct userdata *u) {
188 b = PA_PTR_TO_UINT(busy) && !u->reserve;
190 pa_source_suspend(u->source, b, PA_SUSPEND_APPLICATION);
194 static void monitor_done(struct userdata *u) {
197 if (u->monitor_slot) {
198 pa_hook_slot_free(u->monitor_slot);
199 u->monitor_slot = NULL;
203 pa_reserve_monitor_wrapper_unref(u->monitor);
208 static int reserve_monitor_init(struct userdata *u, const char *dname) {
214 if (pa_in_system_mode())
217 /* We are resuming, try to lock the device */
218 if (!(rname = pa_alsa_get_reserve_name(dname)))
221 u->monitor = pa_reserve_monitor_wrapper_get(u->core, rname);
227 pa_assert(!u->monitor_slot);
228 u->monitor_slot = pa_hook_connect(pa_reserve_monitor_wrapper_hook(u->monitor), PA_HOOK_NORMAL, (pa_hook_cb_t) monitor_cb, u);
233 static void fix_min_sleep_wakeup(struct userdata *u) {
234 size_t max_use, max_use_2;
237 max_use = u->hwbuf_size - u->hwbuf_unused;
238 max_use_2 = pa_frame_align(max_use/2, &u->source->sample_spec);
240 u->min_sleep = pa_usec_to_bytes(TSCHED_MIN_SLEEP_USEC, &u->source->sample_spec);
241 u->min_sleep = PA_CLAMP(u->min_sleep, u->frame_size, max_use_2);
243 u->min_wakeup = pa_usec_to_bytes(TSCHED_MIN_WAKEUP_USEC, &u->source->sample_spec);
244 u->min_wakeup = PA_CLAMP(u->min_wakeup, u->frame_size, max_use_2);
247 static void fix_tsched_watermark(struct userdata *u) {
251 max_use = u->hwbuf_size - u->hwbuf_unused;
253 if (u->tsched_watermark > max_use - u->min_sleep)
254 u->tsched_watermark = max_use - u->min_sleep;
256 if (u->tsched_watermark < u->min_wakeup)
257 u->tsched_watermark = u->min_wakeup;
260 static void adjust_after_overrun(struct userdata *u) {
261 size_t old_watermark;
262 pa_usec_t old_min_latency, new_min_latency;
265 pa_assert(u->use_tsched);
267 /* First, just try to increase the watermark */
268 old_watermark = u->tsched_watermark;
269 u->tsched_watermark = PA_MIN(u->tsched_watermark * 2, u->tsched_watermark + u->watermark_step);
271 fix_tsched_watermark(u);
273 if (old_watermark != u->tsched_watermark) {
274 pa_log_notice("Increasing wakeup watermark to %0.2f ms",
275 (double) pa_bytes_to_usec(u->tsched_watermark, &u->source->sample_spec) / PA_USEC_PER_MSEC);
279 /* Hmm, we cannot increase the watermark any further, hence let's raise the latency */
280 old_min_latency = u->source->thread_info.min_latency;
281 new_min_latency = PA_MIN(old_min_latency * 2, old_min_latency + TSCHED_WATERMARK_STEP_USEC);
282 new_min_latency = PA_MIN(new_min_latency, u->source->thread_info.max_latency);
284 if (old_min_latency != new_min_latency) {
285 pa_log_notice("Increasing minimal latency to %0.2f ms",
286 (double) new_min_latency / PA_USEC_PER_MSEC);
288 pa_source_set_latency_range_within_thread(u->source, new_min_latency, u->source->thread_info.max_latency);
292 /* When we reach this we're officialy fucked! */
295 static pa_usec_t hw_sleep_time(struct userdata *u, pa_usec_t *sleep_usec, pa_usec_t*process_usec) {
300 usec = pa_source_get_requested_latency_within_thread(u->source);
302 if (usec == (pa_usec_t) -1)
303 usec = pa_bytes_to_usec(u->hwbuf_size, &u->source->sample_spec);
305 wm = pa_bytes_to_usec(u->tsched_watermark, &u->source->sample_spec);
310 *sleep_usec = usec - wm;
314 pa_log_debug("Buffer time: %lu ms; Sleep time: %lu ms; Process time: %lu ms",
315 (unsigned long) (usec / PA_USEC_PER_MSEC),
316 (unsigned long) (*sleep_usec / PA_USEC_PER_MSEC),
317 (unsigned long) (*process_usec / PA_USEC_PER_MSEC));
323 static int try_recover(struct userdata *u, const char *call, int err) {
328 pa_log_debug("%s: %s", call, pa_alsa_strerror(err));
330 pa_assert(err != -EAGAIN);
333 pa_log_debug("%s: Buffer overrun!", call);
335 if ((err = snd_pcm_recover(u->pcm_handle, err, 1)) < 0) {
336 pa_log("%s: %s", call, pa_alsa_strerror(err));
340 snd_pcm_start(u->pcm_handle);
344 static size_t check_left_to_record(struct userdata *u, size_t n_bytes) {
345 size_t left_to_record;
346 size_t rec_space = u->hwbuf_size - u->hwbuf_unused;
348 /* We use <= instead of < for this check here because an overrun
349 * only happens after the last sample was processed, not already when
350 * it is removed from the buffer. This is particularly important
351 * when block transfer is used. */
353 if (n_bytes <= rec_space) {
354 left_to_record = rec_space - n_bytes;
357 pa_log_debug("%0.2f ms left to record", (double) pa_bytes_to_usec(left_to_record, &u->source->sample_spec) / PA_USEC_PER_MSEC);
367 if (pa_log_ratelimit())
368 pa_log_info("Overrun!");
371 adjust_after_overrun(u);
374 return left_to_record;
377 static int mmap_read(struct userdata *u, pa_usec_t *sleep_usec, pa_bool_t polled) {
378 pa_bool_t work_done = FALSE;
379 pa_usec_t max_sleep_usec = 0, process_usec = 0;
380 size_t left_to_record;
384 pa_source_assert_ref(u->source);
387 hw_sleep_time(u, &max_sleep_usec, &process_usec);
394 if (PA_UNLIKELY((n = pa_alsa_safe_avail(u->pcm_handle, u->hwbuf_size, &u->source->sample_spec)) < 0)) {
396 if ((r = try_recover(u, "snd_pcm_avail", (int) n)) == 0)
402 n_bytes = (size_t) n * u->frame_size;
405 pa_log_debug("avail: %lu", (unsigned long) n_bytes);
408 left_to_record = check_left_to_record(u, n_bytes);
412 pa_bytes_to_usec(left_to_record, &u->source->sample_spec) > process_usec+max_sleep_usec/2) {
414 pa_log_debug("Not reading, because too early.");
419 if (PA_UNLIKELY(n_bytes <= 0)) {
423 char *dn = pa_alsa_get_driver_name_by_pcm(u->pcm_handle);
424 pa_log(_("ALSA woke us up to read new data from the device, but there was actually nothing to read!\n"
425 "Most likely this is a bug in the ALSA driver '%s'. Please report this issue to the ALSA developers.\n"
426 "We were woken up with POLLIN set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail."),
432 pa_log_debug("Not reading, because not necessary.");
439 pa_log_debug("Not filling up, because already too many iterations.");
448 pa_log_debug("Reading");
453 const snd_pcm_channel_area_t *areas;
454 snd_pcm_uframes_t offset, frames;
457 snd_pcm_sframes_t sframes;
459 frames = (snd_pcm_uframes_t) (n_bytes / u->frame_size);
461 /* pa_log_debug("%lu frames to read", (unsigned long) frames); */
463 if (PA_UNLIKELY((err = pa_alsa_safe_mmap_begin(u->pcm_handle, &areas, &offset, &frames, u->hwbuf_size, &u->source->sample_spec)) < 0)) {
465 if ((r = try_recover(u, "snd_pcm_mmap_begin", err)) == 0)
471 /* Make sure that if these memblocks need to be copied they will fit into one slot */
472 if (frames > pa_mempool_block_size_max(u->source->core->mempool)/u->frame_size)
473 frames = pa_mempool_block_size_max(u->source->core->mempool)/u->frame_size;
475 /* Check these are multiples of 8 bit */
476 pa_assert((areas[0].first & 7) == 0);
477 pa_assert((areas[0].step & 7)== 0);
479 /* We assume a single interleaved memory buffer */
480 pa_assert((areas[0].first >> 3) == 0);
481 pa_assert((areas[0].step >> 3) == u->frame_size);
483 p = (uint8_t*) areas[0].addr + (offset * u->frame_size);
485 chunk.memblock = pa_memblock_new_fixed(u->core->mempool, p, frames * u->frame_size, TRUE);
486 chunk.length = pa_memblock_get_length(chunk.memblock);
489 pa_source_post(u->source, &chunk);
490 pa_memblock_unref_fixed(chunk.memblock);
492 if (PA_UNLIKELY((sframes = snd_pcm_mmap_commit(u->pcm_handle, offset, frames)) < 0)) {
494 if ((r = try_recover(u, "snd_pcm_mmap_commit", (int) sframes)) == 0)
502 u->read_count += frames * u->frame_size;
505 pa_log_debug("Read %lu bytes (of possible %lu bytes)", (unsigned long) (frames * u->frame_size), (unsigned long) n_bytes);
508 if ((size_t) frames * u->frame_size >= n_bytes)
511 n_bytes -= (size_t) frames * u->frame_size;
515 *sleep_usec = pa_bytes_to_usec(left_to_record, &u->source->sample_spec);
517 if (*sleep_usec > process_usec)
518 *sleep_usec -= process_usec;
522 return work_done ? 1 : 0;
525 static int unix_read(struct userdata *u, pa_usec_t *sleep_usec, pa_bool_t polled) {
526 int work_done = FALSE;
527 pa_usec_t max_sleep_usec = 0, process_usec = 0;
528 size_t left_to_record;
532 pa_source_assert_ref(u->source);
535 hw_sleep_time(u, &max_sleep_usec, &process_usec);
542 if (PA_UNLIKELY((n = pa_alsa_safe_avail(u->pcm_handle, u->hwbuf_size, &u->source->sample_spec)) < 0)) {
544 if ((r = try_recover(u, "snd_pcm_avail", (int) n)) == 0)
550 n_bytes = (size_t) n * u->frame_size;
551 left_to_record = check_left_to_record(u, n_bytes);
555 pa_bytes_to_usec(left_to_record, &u->source->sample_spec) > process_usec+max_sleep_usec/2)
558 if (PA_UNLIKELY(n_bytes <= 0)) {
562 char *dn = pa_alsa_get_driver_name_by_pcm(u->pcm_handle);
563 pa_log(_("ALSA woke us up to read new data from the device, but there was actually nothing to read!\n"
564 "Most likely this is a bug in the ALSA driver '%s'. Please report this issue to the ALSA developers.\n"
565 "We were woken up with POLLIN set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail."),
575 pa_log_debug("Not filling up, because already too many iterations.");
585 snd_pcm_sframes_t frames;
588 chunk.memblock = pa_memblock_new(u->core->mempool, (size_t) -1);
590 frames = (snd_pcm_sframes_t) (pa_memblock_get_length(chunk.memblock) / u->frame_size);
592 if (frames > (snd_pcm_sframes_t) (n_bytes/u->frame_size))
593 frames = (snd_pcm_sframes_t) (n_bytes/u->frame_size);
595 /* pa_log_debug("%lu frames to read", (unsigned long) n); */
597 p = pa_memblock_acquire(chunk.memblock);
598 frames = snd_pcm_readi(u->pcm_handle, (uint8_t*) p, (snd_pcm_uframes_t) frames);
599 pa_memblock_release(chunk.memblock);
601 pa_assert(frames != 0);
603 if (PA_UNLIKELY(frames < 0)) {
604 pa_memblock_unref(chunk.memblock);
606 if ((r = try_recover(u, "snd_pcm_readi", (int) (frames))) == 0)
613 chunk.length = (size_t) frames * u->frame_size;
615 pa_source_post(u->source, &chunk);
616 pa_memblock_unref(chunk.memblock);
620 u->read_count += frames * u->frame_size;
622 /* pa_log_debug("read %lu frames", (unsigned long) frames); */
624 if ((size_t) frames * u->frame_size >= n_bytes)
627 n_bytes -= (size_t) frames * u->frame_size;
631 *sleep_usec = pa_bytes_to_usec(left_to_record, &u->source->sample_spec);
633 if (*sleep_usec > process_usec)
634 *sleep_usec -= process_usec;
638 return work_done ? 1 : 0;
641 static void update_smoother(struct userdata *u) {
642 snd_pcm_sframes_t delay = 0;
645 pa_usec_t now1 = 0, now2;
646 snd_pcm_status_t *status;
648 snd_pcm_status_alloca(&status);
651 pa_assert(u->pcm_handle);
653 /* Let's update the time smoother */
655 if (PA_UNLIKELY((err = pa_alsa_safe_delay(u->pcm_handle, &delay, u->hwbuf_size, &u->source->sample_spec)) < 0)) {
656 pa_log_warn("Failed to get delay: %s", pa_alsa_strerror(err));
660 if (PA_UNLIKELY((err = snd_pcm_status(u->pcm_handle, status)) < 0))
661 pa_log_warn("Failed to get timestamp: %s", pa_alsa_strerror(err));
663 snd_htimestamp_t htstamp = { 0, 0 };
664 snd_pcm_status_get_htstamp(status, &htstamp);
665 now1 = pa_timespec_load(&htstamp);
668 position = u->read_count + ((uint64_t) delay * (uint64_t) u->frame_size);
670 /* Hmm, if the timestamp is 0, then it wasn't set and we take the current time */
672 now1 = pa_rtclock_usec();
674 now2 = pa_bytes_to_usec(position, &u->source->sample_spec);
676 pa_smoother_put(u->smoother, now1, now2);
679 static pa_usec_t source_get_latency(struct userdata *u) {
681 pa_usec_t now1, now2;
685 now1 = pa_rtclock_usec();
686 now2 = pa_smoother_get(u->smoother, now1);
688 delay = (int64_t) now2 - (int64_t) pa_bytes_to_usec(u->read_count, &u->source->sample_spec);
690 return delay >= 0 ? (pa_usec_t) delay : 0;
693 static int build_pollfd(struct userdata *u) {
695 pa_assert(u->pcm_handle);
697 if (u->alsa_rtpoll_item)
698 pa_rtpoll_item_free(u->alsa_rtpoll_item);
700 if (!(u->alsa_rtpoll_item = pa_alsa_build_pollfd(u->pcm_handle, u->rtpoll)))
706 static int suspend(struct userdata *u) {
708 pa_assert(u->pcm_handle);
710 pa_smoother_pause(u->smoother, pa_rtclock_usec());
713 snd_pcm_close(u->pcm_handle);
714 u->pcm_handle = NULL;
716 if (u->alsa_rtpoll_item) {
717 pa_rtpoll_item_free(u->alsa_rtpoll_item);
718 u->alsa_rtpoll_item = NULL;
721 pa_log_info("Device suspended...");
726 static int update_sw_params(struct userdata *u) {
727 snd_pcm_uframes_t avail_min;
732 /* Use the full buffer if noone asked us for anything specific */
738 if ((latency = pa_source_get_requested_latency_within_thread(u->source)) != (pa_usec_t) -1) {
741 pa_log_debug("latency set to %0.2fms", (double) latency / PA_USEC_PER_MSEC);
743 b = pa_usec_to_bytes(latency, &u->source->sample_spec);
745 /* We need at least one sample in our buffer */
747 if (PA_UNLIKELY(b < u->frame_size))
750 u->hwbuf_unused = PA_LIKELY(b < u->hwbuf_size) ? (u->hwbuf_size - b) : 0;
753 fix_min_sleep_wakeup(u);
754 fix_tsched_watermark(u);
757 pa_log_debug("hwbuf_unused=%lu", (unsigned long) u->hwbuf_unused);
762 pa_usec_t sleep_usec, process_usec;
764 hw_sleep_time(u, &sleep_usec, &process_usec);
765 avail_min += pa_usec_to_bytes(sleep_usec, &u->source->sample_spec) / u->frame_size;
768 pa_log_debug("setting avail_min=%lu", (unsigned long) avail_min);
770 if ((err = pa_alsa_set_sw_params(u->pcm_handle, avail_min)) < 0) {
771 pa_log("Failed to set software parameters: %s", pa_alsa_strerror(err));
778 static int unsuspend(struct userdata *u) {
783 snd_pcm_uframes_t period_size;
786 pa_assert(!u->pcm_handle);
788 pa_log_info("Trying resume...");
790 if ((err = snd_pcm_open(&u->pcm_handle, u->device_name, SND_PCM_STREAM_CAPTURE,
791 /*SND_PCM_NONBLOCK|*/
792 SND_PCM_NO_AUTO_RESAMPLE|
793 SND_PCM_NO_AUTO_CHANNELS|
794 SND_PCM_NO_AUTO_FORMAT)) < 0) {
795 pa_log("Error opening PCM device %s: %s", u->device_name, pa_alsa_strerror(err));
799 ss = u->source->sample_spec;
800 nfrags = u->nfragments;
801 period_size = u->fragment_size / u->frame_size;
805 if ((err = pa_alsa_set_hw_params(u->pcm_handle, &ss, &nfrags, &period_size, u->hwbuf_size / u->frame_size, &b, &d, TRUE)) < 0) {
806 pa_log("Failed to set hardware parameters: %s", pa_alsa_strerror(err));
810 if (b != u->use_mmap || d != u->use_tsched) {
811 pa_log_warn("Resume failed, couldn't get original access mode.");
815 if (!pa_sample_spec_equal(&ss, &u->source->sample_spec)) {
816 pa_log_warn("Resume failed, couldn't restore original sample settings.");
820 if (nfrags != u->nfragments || period_size*u->frame_size != u->fragment_size) {
821 pa_log_warn("Resume failed, couldn't restore original fragment settings. (Old: %lu*%lu, New %lu*%lu)",
822 (unsigned long) u->nfragments, (unsigned long) u->fragment_size,
823 (unsigned long) nfrags, period_size * u->frame_size);
827 if (update_sw_params(u) < 0)
830 if (build_pollfd(u) < 0)
833 /* FIXME: We need to reload the volume somehow */
835 snd_pcm_start(u->pcm_handle);
836 pa_smoother_resume(u->smoother, pa_rtclock_usec(), TRUE);
838 pa_log_info("Resumed successfully...");
844 snd_pcm_close(u->pcm_handle);
845 u->pcm_handle = NULL;
851 static int source_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
852 struct userdata *u = PA_SOURCE(o)->userdata;
856 case PA_SOURCE_MESSAGE_GET_LATENCY: {
860 r = source_get_latency(u);
862 *((pa_usec_t*) data) = r;
867 case PA_SOURCE_MESSAGE_SET_STATE:
869 switch ((pa_source_state_t) PA_PTR_TO_UINT(data)) {
871 case PA_SOURCE_SUSPENDED:
872 pa_assert(PA_SOURCE_IS_OPENED(u->source->thread_info.state));
880 case PA_SOURCE_RUNNING:
882 if (u->source->thread_info.state == PA_SOURCE_INIT) {
883 if (build_pollfd(u) < 0)
886 snd_pcm_start(u->pcm_handle);
889 if (u->source->thread_info.state == PA_SOURCE_SUSPENDED) {
890 if (unsuspend(u) < 0)
896 case PA_SOURCE_UNLINKED:
898 case PA_SOURCE_INVALID_STATE:
905 return pa_source_process_msg(o, code, data, offset, chunk);
908 /* Called from main context */
909 static int source_set_state_cb(pa_source *s, pa_source_state_t new_state) {
910 pa_source_state_t old_state;
913 pa_source_assert_ref(s);
914 pa_assert_se(u = s->userdata);
916 old_state = pa_source_get_state(u->source);
918 if (PA_SINK_IS_OPENED(old_state) && new_state == PA_SINK_SUSPENDED)
920 else if (old_state == PA_SINK_SUSPENDED && PA_SINK_IS_OPENED(new_state))
921 if (reserve_init(u, u->device_name) < 0)
927 static int mixer_callback(snd_mixer_elem_t *elem, unsigned int mask) {
928 struct userdata *u = snd_mixer_elem_get_callback_private(elem);
931 pa_assert(u->mixer_handle);
933 if (mask == SND_CTL_EVENT_MASK_REMOVE)
936 if (mask & SND_CTL_EVENT_MASK_VALUE) {
937 pa_source_get_volume(u->source, TRUE);
938 pa_source_get_mute(u->source, TRUE);
944 static void source_get_volume_cb(pa_source *s) {
945 struct userdata *u = s->userdata;
947 char t[PA_CVOLUME_SNPRINT_MAX];
950 pa_assert(u->mixer_path);
951 pa_assert(u->mixer_handle);
953 if (pa_alsa_path_get_volume(u->mixer_path, u->mixer_handle, &s->channel_map, &r) < 0)
956 /* Shift down by the base volume, so that 0dB becomes maximum volume */
957 pa_sw_cvolume_multiply_scalar(&r, &r, s->base_volume);
959 pa_log_debug("Read hardware volume: %s", pa_cvolume_snprint(t, sizeof(t), &r));
961 if (pa_cvolume_equal(&u->hardware_volume, &r))
964 s->virtual_volume = u->hardware_volume = r;
966 if (u->mixer_path->has_dB) {
969 /* Hmm, so the hardware volume changed, let's reset our software volume */
970 pa_cvolume_reset(&reset, s->sample_spec.channels);
971 pa_source_set_soft_volume(s, &reset);
975 static void source_set_volume_cb(pa_source *s) {
976 struct userdata *u = s->userdata;
978 char t[PA_CVOLUME_SNPRINT_MAX];
981 pa_assert(u->mixer_path);
982 pa_assert(u->mixer_handle);
984 /* Shift up by the base volume */
985 pa_sw_cvolume_divide_scalar(&r, &s->virtual_volume, s->base_volume);
987 if (pa_alsa_path_set_volume(u->mixer_path, u->mixer_handle, &s->channel_map, &r) < 0)
990 /* Shift down by the base volume, so that 0dB becomes maximum volume */
991 pa_sw_cvolume_multiply_scalar(&r, &r, s->base_volume);
993 u->hardware_volume = r;
995 if (u->mixer_path->has_dB) {
997 /* Match exactly what the user requested by software */
998 pa_sw_cvolume_divide(&s->soft_volume, &s->virtual_volume, &u->hardware_volume);
1000 pa_log_debug("Requested volume: %s", pa_cvolume_snprint(t, sizeof(t), &s->virtual_volume));
1001 pa_log_debug("Got hardware volume: %s", pa_cvolume_snprint(t, sizeof(t), &u->hardware_volume));
1002 pa_log_debug("Calculated software volume: %s", pa_cvolume_snprint(t, sizeof(t), &s->soft_volume));
1005 pa_log_debug("Wrote hardware volume: %s", pa_cvolume_snprint(t, sizeof(t), &r));
1007 /* We can't match exactly what the user requested, hence let's
1008 * at least tell the user about it */
1010 s->virtual_volume = r;
1014 static void source_get_mute_cb(pa_source *s) {
1015 struct userdata *u = s->userdata;
1019 pa_assert(u->mixer_path);
1020 pa_assert(u->mixer_handle);
1022 if (pa_alsa_path_get_mute(u->mixer_path, u->mixer_handle, &b) < 0)
1028 static void source_set_mute_cb(pa_source *s) {
1029 struct userdata *u = s->userdata;
1032 pa_assert(u->mixer_path);
1033 pa_assert(u->mixer_handle);
1035 pa_alsa_path_set_mute(u->mixer_path, u->mixer_handle, s->muted);
1038 static int source_set_port_cb(pa_source *s, pa_device_port *p) {
1039 struct userdata *u = s->userdata;
1040 pa_alsa_port_data *data;
1044 pa_assert(u->mixer_handle);
1046 data = PA_DEVICE_PORT_DATA(p);
1048 pa_assert_se(u->mixer_path = data->path);
1049 pa_alsa_path_select(u->mixer_path, u->mixer_handle);
1051 if (u->mixer_path->has_volume && u->mixer_path->has_dB) {
1052 s->base_volume = pa_sw_volume_from_dB(-u->mixer_path->max_dB);
1053 s->n_volume_steps = PA_VOLUME_NORM+1;
1055 if (u->mixer_path->max_dB > 0.0)
1056 pa_log_info("Fixing base volume to %0.2f dB", pa_sw_volume_to_dB(s->base_volume));
1058 pa_log_info("No particular base volume set, fixing to 0 dB");
1060 s->base_volume = PA_VOLUME_NORM;
1061 s->n_volume_steps = u->mixer_path->max_volume - u->mixer_path->min_volume + 1;
1065 pa_alsa_setting_select(data->setting, u->mixer_handle);
1075 static void source_update_requested_latency_cb(pa_source *s) {
1076 struct userdata *u = s->userdata;
1082 update_sw_params(u);
1085 static void thread_func(void *userdata) {
1086 struct userdata *u = userdata;
1087 unsigned short revents = 0;
1091 pa_log_debug("Thread starting up");
1093 if (u->core->realtime_scheduling)
1094 pa_make_realtime(u->core->realtime_priority);
1096 pa_thread_mq_install(&u->thread_mq);
1102 pa_log_debug("Loop");
1105 /* Read some data and pass it to the sources */
1106 if (PA_SOURCE_IS_OPENED(u->source->thread_info.state)) {
1108 pa_usec_t sleep_usec = 0;
1111 work_done = mmap_read(u, &sleep_usec, revents & POLLIN);
1113 work_done = unix_read(u, &sleep_usec, revents & POLLIN);
1118 /* pa_log_debug("work_done = %i", work_done); */
1123 if (u->use_tsched) {
1126 /* OK, the capture buffer is now empty, let's
1127 * calculate when to wake up next */
1129 /* pa_log_debug("Waking up in %0.2fms (sound card clock).", (double) sleep_usec / PA_USEC_PER_MSEC); */
1131 /* Convert from the sound card time domain to the
1132 * system time domain */
1133 cusec = pa_smoother_translate(u->smoother, pa_rtclock_usec(), sleep_usec);
1135 /* pa_log_debug("Waking up in %0.2fms (system clock).", (double) cusec / PA_USEC_PER_MSEC); */
1137 /* We don't trust the conversion, so we wake up whatever comes first */
1138 pa_rtpoll_set_timer_relative(u->rtpoll, PA_MIN(sleep_usec, cusec));
1140 } else if (u->use_tsched)
1142 /* OK, we're in an invalid state, let's disable our timers */
1143 pa_rtpoll_set_timer_disabled(u->rtpoll);
1145 /* Hmm, nothing to do. Let's sleep */
1146 if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0)
1152 /* Tell ALSA about this and process its response */
1153 if (PA_SOURCE_IS_OPENED(u->source->thread_info.state)) {
1154 struct pollfd *pollfd;
1158 pollfd = pa_rtpoll_item_get_pollfd(u->alsa_rtpoll_item, &n);
1160 if ((err = snd_pcm_poll_descriptors_revents(u->pcm_handle, pollfd, n, &revents)) < 0) {
1161 pa_log("snd_pcm_poll_descriptors_revents() failed: %s", pa_alsa_strerror(err));
1165 if (revents & ~POLLIN) {
1166 if (pa_alsa_recover_from_poll(u->pcm_handle, revents) < 0)
1169 snd_pcm_start(u->pcm_handle);
1170 } else if (revents && u->use_tsched && pa_log_ratelimit())
1171 pa_log_debug("Wakeup from ALSA!");
1178 /* If this was no regular exit from the loop we have to continue
1179 * processing messages until we received PA_MESSAGE_SHUTDOWN */
1180 pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
1181 pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
1184 pa_log_debug("Thread shutting down");
1187 static void set_source_name(pa_source_new_data *data, pa_modargs *ma, const char *device_id, const char *device_name, pa_alsa_mapping *mapping) {
1193 pa_assert(device_name);
1195 if ((n = pa_modargs_get_value(ma, "source_name", NULL))) {
1196 pa_source_new_data_set_name(data, n);
1197 data->namereg_fail = TRUE;
1201 if ((n = pa_modargs_get_value(ma, "name", NULL)))
1202 data->namereg_fail = TRUE;
1204 n = device_id ? device_id : device_name;
1205 data->namereg_fail = FALSE;
1209 t = pa_sprintf_malloc("alsa_input.%s.%s", n, mapping->name);
1211 t = pa_sprintf_malloc("alsa_input.%s", n);
1213 pa_source_new_data_set_name(data, t);
1217 static void find_mixer(struct userdata *u, pa_alsa_mapping *mapping, const char *element, pa_bool_t ignore_dB) {
1219 if (!mapping && !element)
1222 if (!(u->mixer_handle = pa_alsa_open_mixer_for_pcm(u->pcm_handle, &u->control_device))) {
1223 pa_log_info("Failed to find a working mixer device.");
1229 if (!(u->mixer_path = pa_alsa_path_synthesize(element, PA_ALSA_DIRECTION_INPUT)))
1232 if (pa_alsa_path_probe(u->mixer_path, u->mixer_handle, ignore_dB) < 0)
1235 pa_log_debug("Probed mixer path %s:", u->mixer_path->name);
1236 pa_alsa_path_dump(u->mixer_path);
1239 if (!(u->mixer_path_set = pa_alsa_path_set_new(mapping, PA_ALSA_DIRECTION_INPUT)))
1242 pa_alsa_path_set_probe(u->mixer_path_set, u->mixer_handle, ignore_dB);
1244 pa_log_debug("Probed mixer paths:");
1245 pa_alsa_path_set_dump(u->mixer_path_set);
1252 if (u->mixer_path_set) {
1253 pa_alsa_path_set_free(u->mixer_path_set);
1254 u->mixer_path_set = NULL;
1255 } else if (u->mixer_path) {
1256 pa_alsa_path_free(u->mixer_path);
1257 u->mixer_path = NULL;
1260 if (u->mixer_handle) {
1261 snd_mixer_close(u->mixer_handle);
1262 u->mixer_handle = NULL;
1266 static int setup_mixer(struct userdata *u, pa_bool_t ignore_dB) {
1269 if (!u->mixer_handle)
1272 if (u->source->active_port) {
1273 pa_alsa_port_data *data;
1275 /* We have a list of supported paths, so let's activate the
1276 * one that has been chosen as active */
1278 data = PA_DEVICE_PORT_DATA(u->source->active_port);
1279 u->mixer_path = data->path;
1281 pa_alsa_path_select(data->path, u->mixer_handle);
1284 pa_alsa_setting_select(data->setting, u->mixer_handle);
1288 if (!u->mixer_path && u->mixer_path_set)
1289 u->mixer_path = u->mixer_path_set->paths;
1291 if (u->mixer_path) {
1292 /* Hmm, we have only a single path, then let's activate it */
1294 pa_alsa_path_select(u->mixer_path, u->mixer_handle);
1296 if (u->mixer_path->settings)
1297 pa_alsa_setting_select(u->mixer_path->settings, u->mixer_handle);
1302 if (!u->mixer_path->has_volume)
1303 pa_log_info("Driver does not support hardware volume control, falling back to software volume control.");
1306 if (u->mixer_path->has_dB) {
1307 pa_log_info("Hardware volume ranges from %0.2f dB to %0.2f dB.", u->mixer_path->min_dB, u->mixer_path->max_dB);
1309 u->source->base_volume = pa_sw_volume_from_dB(-u->mixer_path->max_dB);
1310 u->source->n_volume_steps = PA_VOLUME_NORM+1;
1312 if (u->mixer_path->max_dB > 0.0)
1313 pa_log_info("Fixing base volume to %0.2f dB", pa_sw_volume_to_dB(u->source->base_volume));
1315 pa_log_info("No particular base volume set, fixing to 0 dB");
1318 pa_log_info("Hardware volume ranges from %li to %li.", u->mixer_path->min_volume, u->mixer_path->max_volume);
1319 u->source->base_volume = PA_VOLUME_NORM;
1320 u->source->n_volume_steps = u->mixer_path->max_volume - u->mixer_path->min_volume + 1;
1323 u->source->get_volume = source_get_volume_cb;
1324 u->source->set_volume = source_set_volume_cb;
1326 u->source->flags |= PA_SOURCE_HW_VOLUME_CTRL | (u->mixer_path->has_dB ? PA_SOURCE_DECIBEL_VOLUME : 0);
1327 pa_log_info("Using hardware volume control. Hardware dB scale %s.", u->mixer_path->has_dB ? "supported" : "not supported");
1330 if (!u->mixer_path->has_mute) {
1331 pa_log_info("Driver does not support hardware mute control, falling back to software mute control.");
1333 u->source->get_mute = source_get_mute_cb;
1334 u->source->set_mute = source_set_mute_cb;
1335 u->source->flags |= PA_SOURCE_HW_MUTE_CTRL;
1336 pa_log_info("Using hardware mute control.");
1339 u->mixer_fdl = pa_alsa_fdlist_new();
1341 if (pa_alsa_fdlist_set_mixer(u->mixer_fdl, u->mixer_handle, u->core->mainloop) < 0) {
1342 pa_log("Failed to initialize file descriptor monitoring");
1346 if (u->mixer_path_set)
1347 pa_alsa_path_set_set_callback(u->mixer_path_set, u->mixer_handle, mixer_callback, u);
1349 pa_alsa_path_set_callback(u->mixer_path, u->mixer_handle, mixer_callback, u);
1354 pa_source *pa_alsa_source_new(pa_module *m, pa_modargs *ma, const char*driver, pa_card *card, pa_alsa_mapping *mapping) {
1356 struct userdata *u = NULL;
1357 const char *dev_id = NULL;
1358 pa_sample_spec ss, requested_ss;
1360 uint32_t nfrags, hwbuf_size, frag_size, tsched_size, tsched_watermark;
1361 snd_pcm_uframes_t period_frames, tsched_frames;
1363 pa_bool_t use_mmap = TRUE, b, use_tsched = TRUE, d, ignore_dB = FALSE;
1364 pa_source_new_data data;
1365 pa_alsa_profile_set *profile_set = NULL;
1370 ss = m->core->default_sample_spec;
1371 map = m->core->default_channel_map;
1372 if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_ALSA) < 0) {
1373 pa_log("Failed to parse sample specification");
1378 frame_size = pa_frame_size(&ss);
1380 nfrags = m->core->default_n_fragments;
1381 frag_size = (uint32_t) pa_usec_to_bytes(m->core->default_fragment_size_msec*PA_USEC_PER_MSEC, &ss);
1383 frag_size = (uint32_t) frame_size;
1384 tsched_size = (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_BUFFER_USEC, &ss);
1385 tsched_watermark = (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_WATERMARK_USEC, &ss);
1387 if (pa_modargs_get_value_u32(ma, "fragments", &nfrags) < 0 ||
1388 pa_modargs_get_value_u32(ma, "fragment_size", &frag_size) < 0 ||
1389 pa_modargs_get_value_u32(ma, "tsched_buffer_size", &tsched_size) < 0 ||
1390 pa_modargs_get_value_u32(ma, "tsched_buffer_watermark", &tsched_watermark) < 0) {
1391 pa_log("Failed to parse buffer metrics");
1395 hwbuf_size = frag_size * nfrags;
1396 period_frames = frag_size/frame_size;
1397 tsched_frames = tsched_size/frame_size;
1399 if (pa_modargs_get_value_boolean(ma, "mmap", &use_mmap) < 0) {
1400 pa_log("Failed to parse mmap argument.");
1404 if (pa_modargs_get_value_boolean(ma, "tsched", &use_tsched) < 0) {
1405 pa_log("Failed to parse timer_scheduling argument.");
1409 if (pa_modargs_get_value_boolean(ma, "ignore_dB", &ignore_dB) < 0) {
1410 pa_log("Failed to parse ignore_dB argument.");
1414 if (use_tsched && !pa_rtclock_hrtimer()) {
1415 pa_log_notice("Disabling timer-based scheduling because high-resolution timers are not available from the kernel.");
1419 u = pa_xnew0(struct userdata, 1);
1422 u->use_mmap = use_mmap;
1423 u->use_tsched = use_tsched;
1424 u->rtpoll = pa_rtpoll_new();
1425 pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll);
1427 u->smoother = pa_smoother_new(
1428 DEFAULT_TSCHED_WATERMARK_USEC*2,
1429 DEFAULT_TSCHED_WATERMARK_USEC*2,
1436 dev_id = pa_modargs_get_value(
1438 pa_modargs_get_value(ma, "device", DEFAULT_DEVICE));
1440 if (reserve_init(u, dev_id) < 0)
1443 if (reserve_monitor_init(u, dev_id) < 0)
1451 if (!(dev_id = pa_modargs_get_value(ma, "device_id", NULL))) {
1452 pa_log("device_id= not set");
1456 if (!(u->pcm_handle = pa_alsa_open_by_device_id_mapping(
1460 SND_PCM_STREAM_CAPTURE,
1461 &nfrags, &period_frames, tsched_frames,
1465 } else if ((dev_id = pa_modargs_get_value(ma, "device_id", NULL))) {
1467 if (!(profile_set = pa_alsa_profile_set_new(NULL, &map)))
1470 if (!(u->pcm_handle = pa_alsa_open_by_device_id_auto(
1474 SND_PCM_STREAM_CAPTURE,
1475 &nfrags, &period_frames, tsched_frames,
1476 &b, &d, profile_set, &mapping)))
1481 if (!(u->pcm_handle = pa_alsa_open_by_device_string(
1482 pa_modargs_get_value(ma, "device", DEFAULT_DEVICE),
1485 SND_PCM_STREAM_CAPTURE,
1486 &nfrags, &period_frames, tsched_frames,
1491 pa_assert(u->device_name);
1492 pa_log_info("Successfully opened device %s.", u->device_name);
1494 if (pa_alsa_pcm_is_modem(u->pcm_handle)) {
1495 pa_log_notice("Device %s is modem, refusing further initialization.", u->device_name);
1500 pa_log_info("Selected mapping '%s' (%s).", mapping->description, mapping->name);
1502 if (use_mmap && !b) {
1503 pa_log_info("Device doesn't support mmap(), falling back to UNIX read/write mode.");
1504 u->use_mmap = use_mmap = FALSE;
1507 if (use_tsched && (!b || !d)) {
1508 pa_log_info("Cannot enable timer-based scheduling, falling back to sound IRQ scheduling.");
1509 u->use_tsched = use_tsched = FALSE;
1512 if (use_tsched && !pa_alsa_pcm_is_hw(u->pcm_handle)) {
1513 pa_log_info("Device is not a hardware device, disabling timer-based scheduling.");
1514 u->use_tsched = use_tsched = FALSE;
1518 pa_log_info("Successfully enabled mmap() mode.");
1521 pa_log_info("Successfully enabled timer-based scheduling mode.");
1523 /* ALSA might tweak the sample spec, so recalculate the frame size */
1524 frame_size = pa_frame_size(&ss);
1526 find_mixer(u, mapping, pa_modargs_get_value(ma, "control", NULL), ignore_dB);
1528 pa_source_new_data_init(&data);
1529 data.driver = driver;
1532 set_source_name(&data, ma, dev_id, u->device_name, mapping);
1533 pa_source_new_data_set_sample_spec(&data, &ss);
1534 pa_source_new_data_set_channel_map(&data, &map);
1536 pa_alsa_init_proplist_pcm(m->core, data.proplist, u->pcm_handle);
1537 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, u->device_name);
1538 pa_proplist_setf(data.proplist, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE, "%lu", (unsigned long) (period_frames * frame_size * nfrags));
1539 pa_proplist_setf(data.proplist, PA_PROP_DEVICE_BUFFERING_FRAGMENT_SIZE, "%lu", (unsigned long) (period_frames * frame_size));
1540 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_ACCESS_MODE, u->use_tsched ? "mmap+timer" : (u->use_mmap ? "mmap" : "serial"));
1543 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_PROFILE_NAME, mapping->name);
1544 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_PROFILE_DESCRIPTION, mapping->description);
1547 pa_alsa_init_description(data.proplist);
1549 if (u->control_device)
1550 pa_alsa_init_proplist_ctl(data.proplist, u->control_device);
1552 if (pa_modargs_get_proplist(ma, "source_properties", data.proplist, PA_UPDATE_REPLACE) < 0) {
1553 pa_log("Invalid properties");
1554 pa_source_new_data_done(&data);
1558 if (u->mixer_path_set)
1559 pa_alsa_add_ports(&data.ports, u->mixer_path_set);
1561 u->source = pa_source_new(m->core, &data, PA_SOURCE_HARDWARE|PA_SOURCE_LATENCY|(u->use_tsched ? PA_SOURCE_DYNAMIC_LATENCY : 0));
1562 pa_source_new_data_done(&data);
1565 pa_log("Failed to create source object");
1569 u->source->parent.process_msg = source_process_msg;
1570 u->source->update_requested_latency = source_update_requested_latency_cb;
1571 u->source->set_state = source_set_state_cb;
1572 u->source->set_port = source_set_port_cb;
1573 u->source->userdata = u;
1575 pa_source_set_asyncmsgq(u->source, u->thread_mq.inq);
1576 pa_source_set_rtpoll(u->source, u->rtpoll);
1578 u->frame_size = frame_size;
1579 u->fragment_size = frag_size = (uint32_t) (period_frames * frame_size);
1580 u->nfragments = nfrags;
1581 u->hwbuf_size = u->fragment_size * nfrags;
1582 u->tsched_watermark = pa_usec_to_bytes_round_up(pa_bytes_to_usec_round_up(tsched_watermark, &requested_ss), &u->source->sample_spec);
1583 pa_cvolume_mute(&u->hardware_volume, u->source->sample_spec.channels);
1585 pa_log_info("Using %u fragments of size %lu bytes, buffer time is %0.2fms",
1586 nfrags, (long unsigned) u->fragment_size,
1587 (double) pa_bytes_to_usec(u->hwbuf_size, &ss) / PA_USEC_PER_MSEC);
1589 if (u->use_tsched) {
1590 u->watermark_step = pa_usec_to_bytes(TSCHED_WATERMARK_STEP_USEC, &u->source->sample_spec);
1592 fix_min_sleep_wakeup(u);
1593 fix_tsched_watermark(u);
1595 pa_source_set_latency_range(u->source,
1597 pa_bytes_to_usec(u->hwbuf_size, &ss));
1599 pa_log_info("Time scheduling watermark is %0.2fms",
1600 (double) pa_bytes_to_usec(u->tsched_watermark, &ss) / PA_USEC_PER_MSEC);
1602 pa_source_set_fixed_latency(u->source, pa_bytes_to_usec(u->hwbuf_size, &ss));
1606 if (update_sw_params(u) < 0)
1609 if (setup_mixer(u, ignore_dB) < 0)
1612 pa_alsa_dump(PA_LOG_DEBUG, u->pcm_handle);
1614 if (!(u->thread = pa_thread_new(thread_func, u))) {
1615 pa_log("Failed to create thread.");
1618 /* Get initial mixer settings */
1619 if (data.volume_is_set) {
1620 if (u->source->set_volume)
1621 u->source->set_volume(u->source);
1623 if (u->source->get_volume)
1624 u->source->get_volume(u->source);
1627 if (data.muted_is_set) {
1628 if (u->source->set_mute)
1629 u->source->set_mute(u->source);
1631 if (u->source->get_mute)
1632 u->source->get_mute(u->source);
1635 pa_source_put(u->source);
1638 pa_alsa_profile_set_free(profile_set);
1648 pa_alsa_profile_set_free(profile_set);
1653 static void userdata_free(struct userdata *u) {
1657 pa_source_unlink(u->source);
1660 pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
1661 pa_thread_free(u->thread);
1664 pa_thread_mq_done(&u->thread_mq);
1667 pa_source_unref(u->source);
1669 if (u->alsa_rtpoll_item)
1670 pa_rtpoll_item_free(u->alsa_rtpoll_item);
1673 pa_rtpoll_free(u->rtpoll);
1675 if (u->pcm_handle) {
1676 snd_pcm_drop(u->pcm_handle);
1677 snd_pcm_close(u->pcm_handle);
1681 pa_alsa_fdlist_free(u->mixer_fdl);
1683 if (u->mixer_path_set)
1684 pa_alsa_path_set_free(u->mixer_path_set);
1685 else if (u->mixer_path)
1686 pa_alsa_path_free(u->mixer_path);
1688 if (u->mixer_handle)
1689 snd_mixer_close(u->mixer_handle);
1692 pa_smoother_free(u->smoother);
1697 pa_xfree(u->device_name);
1698 pa_xfree(u->control_device);
1702 void pa_alsa_source_free(pa_source *s) {
1705 pa_source_assert_ref(s);
1706 pa_assert_se(u = s->userdata);