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 snd_config_update_free_global();
792 if ((err = snd_pcm_open(&u->pcm_handle, u->device_name, SND_PCM_STREAM_CAPTURE,
793 /*SND_PCM_NONBLOCK|*/
794 SND_PCM_NO_AUTO_RESAMPLE|
795 SND_PCM_NO_AUTO_CHANNELS|
796 SND_PCM_NO_AUTO_FORMAT)) < 0) {
797 pa_log("Error opening PCM device %s: %s", u->device_name, pa_alsa_strerror(err));
801 ss = u->source->sample_spec;
802 nfrags = u->nfragments;
803 period_size = u->fragment_size / u->frame_size;
807 if ((err = pa_alsa_set_hw_params(u->pcm_handle, &ss, &nfrags, &period_size, u->hwbuf_size / u->frame_size, &b, &d, TRUE)) < 0) {
808 pa_log("Failed to set hardware parameters: %s", pa_alsa_strerror(err));
812 if (b != u->use_mmap || d != u->use_tsched) {
813 pa_log_warn("Resume failed, couldn't get original access mode.");
817 if (!pa_sample_spec_equal(&ss, &u->source->sample_spec)) {
818 pa_log_warn("Resume failed, couldn't restore original sample settings.");
822 if (nfrags != u->nfragments || period_size*u->frame_size != u->fragment_size) {
823 pa_log_warn("Resume failed, couldn't restore original fragment settings. (Old: %lu*%lu, New %lu*%lu)",
824 (unsigned long) u->nfragments, (unsigned long) u->fragment_size,
825 (unsigned long) nfrags, period_size * u->frame_size);
829 if (update_sw_params(u) < 0)
832 if (build_pollfd(u) < 0)
835 /* FIXME: We need to reload the volume somehow */
837 snd_pcm_start(u->pcm_handle);
838 pa_smoother_resume(u->smoother, pa_rtclock_usec(), TRUE);
840 pa_log_info("Resumed successfully...");
846 snd_pcm_close(u->pcm_handle);
847 u->pcm_handle = NULL;
853 static int source_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
854 struct userdata *u = PA_SOURCE(o)->userdata;
858 case PA_SOURCE_MESSAGE_GET_LATENCY: {
862 r = source_get_latency(u);
864 *((pa_usec_t*) data) = r;
869 case PA_SOURCE_MESSAGE_SET_STATE:
871 switch ((pa_source_state_t) PA_PTR_TO_UINT(data)) {
873 case PA_SOURCE_SUSPENDED:
874 pa_assert(PA_SOURCE_IS_OPENED(u->source->thread_info.state));
882 case PA_SOURCE_RUNNING:
884 if (u->source->thread_info.state == PA_SOURCE_INIT) {
885 if (build_pollfd(u) < 0)
888 snd_pcm_start(u->pcm_handle);
891 if (u->source->thread_info.state == PA_SOURCE_SUSPENDED) {
892 if (unsuspend(u) < 0)
898 case PA_SOURCE_UNLINKED:
900 case PA_SOURCE_INVALID_STATE:
907 return pa_source_process_msg(o, code, data, offset, chunk);
910 /* Called from main context */
911 static int source_set_state_cb(pa_source *s, pa_source_state_t new_state) {
912 pa_source_state_t old_state;
915 pa_source_assert_ref(s);
916 pa_assert_se(u = s->userdata);
918 old_state = pa_source_get_state(u->source);
920 if (PA_SINK_IS_OPENED(old_state) && new_state == PA_SINK_SUSPENDED)
922 else if (old_state == PA_SINK_SUSPENDED && PA_SINK_IS_OPENED(new_state))
923 if (reserve_init(u, u->device_name) < 0)
929 static int mixer_callback(snd_mixer_elem_t *elem, unsigned int mask) {
930 struct userdata *u = snd_mixer_elem_get_callback_private(elem);
933 pa_assert(u->mixer_handle);
935 if (mask == SND_CTL_EVENT_MASK_REMOVE)
938 if (mask & SND_CTL_EVENT_MASK_VALUE) {
939 pa_source_get_volume(u->source, TRUE);
940 pa_source_get_mute(u->source, TRUE);
946 static void source_get_volume_cb(pa_source *s) {
947 struct userdata *u = s->userdata;
949 char t[PA_CVOLUME_SNPRINT_MAX];
952 pa_assert(u->mixer_path);
953 pa_assert(u->mixer_handle);
955 if (pa_alsa_path_get_volume(u->mixer_path, u->mixer_handle, &s->channel_map, &r) < 0)
958 /* Shift down by the base volume, so that 0dB becomes maximum volume */
959 pa_sw_cvolume_multiply_scalar(&r, &r, s->base_volume);
961 pa_log_debug("Read hardware volume: %s", pa_cvolume_snprint(t, sizeof(t), &r));
963 if (pa_cvolume_equal(&u->hardware_volume, &r))
966 s->virtual_volume = u->hardware_volume = r;
968 if (u->mixer_path->has_dB) {
971 /* Hmm, so the hardware volume changed, let's reset our software volume */
972 pa_cvolume_reset(&reset, s->sample_spec.channels);
973 pa_source_set_soft_volume(s, &reset);
977 static void source_set_volume_cb(pa_source *s) {
978 struct userdata *u = s->userdata;
980 char t[PA_CVOLUME_SNPRINT_MAX];
983 pa_assert(u->mixer_path);
984 pa_assert(u->mixer_handle);
986 /* Shift up by the base volume */
987 pa_sw_cvolume_divide_scalar(&r, &s->virtual_volume, s->base_volume);
989 if (pa_alsa_path_set_volume(u->mixer_path, u->mixer_handle, &s->channel_map, &r) < 0)
992 /* Shift down by the base volume, so that 0dB becomes maximum volume */
993 pa_sw_cvolume_multiply_scalar(&r, &r, s->base_volume);
995 u->hardware_volume = r;
997 if (u->mixer_path->has_dB) {
999 /* Match exactly what the user requested by software */
1000 pa_sw_cvolume_divide(&s->soft_volume, &s->virtual_volume, &u->hardware_volume);
1002 pa_log_debug("Requested volume: %s", pa_cvolume_snprint(t, sizeof(t), &s->virtual_volume));
1003 pa_log_debug("Got hardware volume: %s", pa_cvolume_snprint(t, sizeof(t), &u->hardware_volume));
1004 pa_log_debug("Calculated software volume: %s", pa_cvolume_snprint(t, sizeof(t), &s->soft_volume));
1007 pa_log_debug("Wrote hardware volume: %s", pa_cvolume_snprint(t, sizeof(t), &r));
1009 /* We can't match exactly what the user requested, hence let's
1010 * at least tell the user about it */
1012 s->virtual_volume = r;
1016 static void source_get_mute_cb(pa_source *s) {
1017 struct userdata *u = s->userdata;
1021 pa_assert(u->mixer_path);
1022 pa_assert(u->mixer_handle);
1024 if (pa_alsa_path_get_mute(u->mixer_path, u->mixer_handle, &b) < 0)
1030 static void source_set_mute_cb(pa_source *s) {
1031 struct userdata *u = s->userdata;
1034 pa_assert(u->mixer_path);
1035 pa_assert(u->mixer_handle);
1037 pa_alsa_path_set_mute(u->mixer_path, u->mixer_handle, s->muted);
1040 static int source_set_port_cb(pa_source *s, pa_device_port *p) {
1041 struct userdata *u = s->userdata;
1042 pa_alsa_port_data *data;
1046 pa_assert(u->mixer_handle);
1048 data = PA_DEVICE_PORT_DATA(p);
1050 pa_assert_se(u->mixer_path = data->path);
1051 pa_alsa_path_select(u->mixer_path, u->mixer_handle);
1053 if (u->mixer_path->has_volume && u->mixer_path->has_dB) {
1054 s->base_volume = pa_sw_volume_from_dB(-u->mixer_path->max_dB);
1055 s->n_volume_steps = PA_VOLUME_NORM+1;
1057 if (u->mixer_path->max_dB > 0.0)
1058 pa_log_info("Fixing base volume to %0.2f dB", pa_sw_volume_to_dB(s->base_volume));
1060 pa_log_info("No particular base volume set, fixing to 0 dB");
1062 s->base_volume = PA_VOLUME_NORM;
1063 s->n_volume_steps = u->mixer_path->max_volume - u->mixer_path->min_volume + 1;
1067 pa_alsa_setting_select(data->setting, u->mixer_handle);
1077 static void source_update_requested_latency_cb(pa_source *s) {
1078 struct userdata *u = s->userdata;
1084 update_sw_params(u);
1087 static void thread_func(void *userdata) {
1088 struct userdata *u = userdata;
1089 unsigned short revents = 0;
1093 pa_log_debug("Thread starting up");
1095 if (u->core->realtime_scheduling)
1096 pa_make_realtime(u->core->realtime_priority);
1098 pa_thread_mq_install(&u->thread_mq);
1099 pa_rtpoll_install(u->rtpoll);
1105 pa_log_debug("Loop");
1108 /* Read some data and pass it to the sources */
1109 if (PA_SOURCE_IS_OPENED(u->source->thread_info.state)) {
1111 pa_usec_t sleep_usec = 0;
1114 work_done = mmap_read(u, &sleep_usec, revents & POLLIN);
1116 work_done = unix_read(u, &sleep_usec, revents & POLLIN);
1121 /* pa_log_debug("work_done = %i", work_done); */
1126 if (u->use_tsched) {
1129 /* OK, the capture buffer is now empty, let's
1130 * calculate when to wake up next */
1132 /* pa_log_debug("Waking up in %0.2fms (sound card clock).", (double) sleep_usec / PA_USEC_PER_MSEC); */
1134 /* Convert from the sound card time domain to the
1135 * system time domain */
1136 cusec = pa_smoother_translate(u->smoother, pa_rtclock_usec(), sleep_usec);
1138 /* pa_log_debug("Waking up in %0.2fms (system clock).", (double) cusec / PA_USEC_PER_MSEC); */
1140 /* We don't trust the conversion, so we wake up whatever comes first */
1141 pa_rtpoll_set_timer_relative(u->rtpoll, PA_MIN(sleep_usec, cusec));
1143 } else if (u->use_tsched)
1145 /* OK, we're in an invalid state, let's disable our timers */
1146 pa_rtpoll_set_timer_disabled(u->rtpoll);
1148 /* Hmm, nothing to do. Let's sleep */
1149 if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0)
1155 /* Tell ALSA about this and process its response */
1156 if (PA_SOURCE_IS_OPENED(u->source->thread_info.state)) {
1157 struct pollfd *pollfd;
1161 pollfd = pa_rtpoll_item_get_pollfd(u->alsa_rtpoll_item, &n);
1163 if ((err = snd_pcm_poll_descriptors_revents(u->pcm_handle, pollfd, n, &revents)) < 0) {
1164 pa_log("snd_pcm_poll_descriptors_revents() failed: %s", pa_alsa_strerror(err));
1168 if (revents & ~POLLIN) {
1169 if (pa_alsa_recover_from_poll(u->pcm_handle, revents) < 0)
1172 snd_pcm_start(u->pcm_handle);
1173 } else if (revents && u->use_tsched && pa_log_ratelimit())
1174 pa_log_debug("Wakeup from ALSA!");
1181 /* If this was no regular exit from the loop we have to continue
1182 * processing messages until we received PA_MESSAGE_SHUTDOWN */
1183 pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
1184 pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
1187 pa_log_debug("Thread shutting down");
1190 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) {
1196 pa_assert(device_name);
1198 if ((n = pa_modargs_get_value(ma, "source_name", NULL))) {
1199 pa_source_new_data_set_name(data, n);
1200 data->namereg_fail = TRUE;
1204 if ((n = pa_modargs_get_value(ma, "name", NULL)))
1205 data->namereg_fail = TRUE;
1207 n = device_id ? device_id : device_name;
1208 data->namereg_fail = FALSE;
1212 t = pa_sprintf_malloc("alsa_input.%s.%s", n, mapping->name);
1214 t = pa_sprintf_malloc("alsa_input.%s", n);
1216 pa_source_new_data_set_name(data, t);
1220 static void find_mixer(struct userdata *u, pa_alsa_mapping *mapping, const char *element, pa_bool_t ignore_dB) {
1222 if (!mapping && !element)
1225 if (!(u->mixer_handle = pa_alsa_open_mixer_for_pcm(u->pcm_handle, &u->control_device))) {
1226 pa_log_info("Failed to find a working mixer device.");
1232 if (!(u->mixer_path = pa_alsa_path_synthesize(element, PA_ALSA_DIRECTION_INPUT)))
1235 if (pa_alsa_path_probe(u->mixer_path, u->mixer_handle, ignore_dB) < 0)
1238 pa_log_debug("Probed mixer path %s:", u->mixer_path->name);
1239 pa_alsa_path_dump(u->mixer_path);
1242 if (!(u->mixer_path_set = pa_alsa_path_set_new(mapping, PA_ALSA_DIRECTION_INPUT)))
1245 pa_alsa_path_set_probe(u->mixer_path_set, u->mixer_handle, ignore_dB);
1247 pa_log_debug("Probed mixer paths:");
1248 pa_alsa_path_set_dump(u->mixer_path_set);
1255 if (u->mixer_path_set) {
1256 pa_alsa_path_set_free(u->mixer_path_set);
1257 u->mixer_path_set = NULL;
1258 } else if (u->mixer_path) {
1259 pa_alsa_path_free(u->mixer_path);
1260 u->mixer_path = NULL;
1263 if (u->mixer_handle) {
1264 snd_mixer_close(u->mixer_handle);
1265 u->mixer_handle = NULL;
1269 static int setup_mixer(struct userdata *u, pa_bool_t ignore_dB) {
1272 if (!u->mixer_handle)
1275 if (u->source->active_port) {
1276 pa_alsa_port_data *data;
1278 /* We have a list of supported paths, so let's activate the
1279 * one that has been chosen as active */
1281 data = PA_DEVICE_PORT_DATA(u->source->active_port);
1282 u->mixer_path = data->path;
1284 pa_alsa_path_select(data->path, u->mixer_handle);
1287 pa_alsa_setting_select(data->setting, u->mixer_handle);
1291 if (!u->mixer_path && u->mixer_path_set)
1292 u->mixer_path = u->mixer_path_set->paths;
1294 if (u->mixer_path) {
1295 /* Hmm, we have only a single path, then let's activate it */
1297 pa_alsa_path_select(u->mixer_path, u->mixer_handle);
1299 if (u->mixer_path->settings)
1300 pa_alsa_setting_select(u->mixer_path->settings, u->mixer_handle);
1305 if (!u->mixer_path->has_volume)
1306 pa_log_info("Driver does not support hardware volume control, falling back to software volume control.");
1309 if (u->mixer_path->has_dB) {
1310 pa_log_info("Hardware volume ranges from %0.2f dB to %0.2f dB.", u->mixer_path->min_dB, u->mixer_path->max_dB);
1312 u->source->base_volume = pa_sw_volume_from_dB(-u->mixer_path->max_dB);
1313 u->source->n_volume_steps = PA_VOLUME_NORM+1;
1315 if (u->mixer_path->max_dB > 0.0)
1316 pa_log_info("Fixing base volume to %0.2f dB", pa_sw_volume_to_dB(u->source->base_volume));
1318 pa_log_info("No particular base volume set, fixing to 0 dB");
1321 pa_log_info("Hardware volume ranges from %li to %li.", u->mixer_path->min_volume, u->mixer_path->max_volume);
1322 u->source->base_volume = PA_VOLUME_NORM;
1323 u->source->n_volume_steps = u->mixer_path->max_volume - u->mixer_path->min_volume + 1;
1326 u->source->get_volume = source_get_volume_cb;
1327 u->source->set_volume = source_set_volume_cb;
1329 u->source->flags |= PA_SOURCE_HW_VOLUME_CTRL | (u->mixer_path->has_dB ? PA_SOURCE_DECIBEL_VOLUME : 0);
1330 pa_log_info("Using hardware volume control. Hardware dB scale %s.", u->mixer_path->has_dB ? "supported" : "not supported");
1333 if (!u->mixer_path->has_mute) {
1334 pa_log_info("Driver does not support hardware mute control, falling back to software mute control.");
1336 u->source->get_mute = source_get_mute_cb;
1337 u->source->set_mute = source_set_mute_cb;
1338 u->source->flags |= PA_SOURCE_HW_MUTE_CTRL;
1339 pa_log_info("Using hardware mute control.");
1342 u->mixer_fdl = pa_alsa_fdlist_new();
1344 if (pa_alsa_fdlist_set_mixer(u->mixer_fdl, u->mixer_handle, u->core->mainloop) < 0) {
1345 pa_log("Failed to initialize file descriptor monitoring");
1349 if (u->mixer_path_set)
1350 pa_alsa_path_set_set_callback(u->mixer_path_set, u->mixer_handle, mixer_callback, u);
1352 pa_alsa_path_set_callback(u->mixer_path, u->mixer_handle, mixer_callback, u);
1357 pa_source *pa_alsa_source_new(pa_module *m, pa_modargs *ma, const char*driver, pa_card *card, pa_alsa_mapping *mapping) {
1359 struct userdata *u = NULL;
1360 const char *dev_id = NULL;
1361 pa_sample_spec ss, requested_ss;
1363 uint32_t nfrags, hwbuf_size, frag_size, tsched_size, tsched_watermark;
1364 snd_pcm_uframes_t period_frames, tsched_frames;
1366 pa_bool_t use_mmap = TRUE, b, use_tsched = TRUE, d, ignore_dB = FALSE;
1367 pa_source_new_data data;
1368 pa_alsa_profile_set *profile_set = NULL;
1373 ss = m->core->default_sample_spec;
1374 map = m->core->default_channel_map;
1375 if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_ALSA) < 0) {
1376 pa_log("Failed to parse sample specification");
1381 frame_size = pa_frame_size(&ss);
1383 nfrags = m->core->default_n_fragments;
1384 frag_size = (uint32_t) pa_usec_to_bytes(m->core->default_fragment_size_msec*PA_USEC_PER_MSEC, &ss);
1386 frag_size = (uint32_t) frame_size;
1387 tsched_size = (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_BUFFER_USEC, &ss);
1388 tsched_watermark = (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_WATERMARK_USEC, &ss);
1390 if (pa_modargs_get_value_u32(ma, "fragments", &nfrags) < 0 ||
1391 pa_modargs_get_value_u32(ma, "fragment_size", &frag_size) < 0 ||
1392 pa_modargs_get_value_u32(ma, "tsched_buffer_size", &tsched_size) < 0 ||
1393 pa_modargs_get_value_u32(ma, "tsched_buffer_watermark", &tsched_watermark) < 0) {
1394 pa_log("Failed to parse buffer metrics");
1398 hwbuf_size = frag_size * nfrags;
1399 period_frames = frag_size/frame_size;
1400 tsched_frames = tsched_size/frame_size;
1402 if (pa_modargs_get_value_boolean(ma, "mmap", &use_mmap) < 0) {
1403 pa_log("Failed to parse mmap argument.");
1407 if (pa_modargs_get_value_boolean(ma, "tsched", &use_tsched) < 0) {
1408 pa_log("Failed to parse timer_scheduling argument.");
1412 if (pa_modargs_get_value_boolean(ma, "ignore_dB", &ignore_dB) < 0) {
1413 pa_log("Failed to parse ignore_dB argument.");
1417 if (use_tsched && !pa_rtclock_hrtimer()) {
1418 pa_log_notice("Disabling timer-based scheduling because high-resolution timers are not available from the kernel.");
1422 u = pa_xnew0(struct userdata, 1);
1425 u->use_mmap = use_mmap;
1426 u->use_tsched = use_tsched;
1427 u->rtpoll = pa_rtpoll_new();
1428 pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll);
1430 u->smoother = pa_smoother_new(
1431 DEFAULT_TSCHED_WATERMARK_USEC*2,
1432 DEFAULT_TSCHED_WATERMARK_USEC*2,
1439 dev_id = pa_modargs_get_value(
1441 pa_modargs_get_value(ma, "device", DEFAULT_DEVICE));
1443 if (reserve_init(u, dev_id) < 0)
1446 if (reserve_monitor_init(u, dev_id) < 0)
1454 if (!(dev_id = pa_modargs_get_value(ma, "device_id", NULL))) {
1455 pa_log("device_id= not set");
1459 if (!(u->pcm_handle = pa_alsa_open_by_device_id_mapping(
1463 SND_PCM_STREAM_CAPTURE,
1464 &nfrags, &period_frames, tsched_frames,
1468 } else if ((dev_id = pa_modargs_get_value(ma, "device_id", NULL))) {
1470 if (!(profile_set = pa_alsa_profile_set_new(NULL, &map)))
1473 if (!(u->pcm_handle = pa_alsa_open_by_device_id_auto(
1477 SND_PCM_STREAM_CAPTURE,
1478 &nfrags, &period_frames, tsched_frames,
1479 &b, &d, profile_set, &mapping)))
1484 if (!(u->pcm_handle = pa_alsa_open_by_device_string(
1485 pa_modargs_get_value(ma, "device", DEFAULT_DEVICE),
1488 SND_PCM_STREAM_CAPTURE,
1489 &nfrags, &period_frames, tsched_frames,
1494 pa_assert(u->device_name);
1495 pa_log_info("Successfully opened device %s.", u->device_name);
1497 if (pa_alsa_pcm_is_modem(u->pcm_handle)) {
1498 pa_log_notice("Device %s is modem, refusing further initialization.", u->device_name);
1503 pa_log_info("Selected mapping '%s' (%s).", mapping->description, mapping->name);
1505 if (use_mmap && !b) {
1506 pa_log_info("Device doesn't support mmap(), falling back to UNIX read/write mode.");
1507 u->use_mmap = use_mmap = FALSE;
1510 if (use_tsched && (!b || !d)) {
1511 pa_log_info("Cannot enable timer-based scheduling, falling back to sound IRQ scheduling.");
1512 u->use_tsched = use_tsched = FALSE;
1515 if (use_tsched && !pa_alsa_pcm_is_hw(u->pcm_handle)) {
1516 pa_log_info("Device is not a hardware device, disabling timer-based scheduling.");
1517 u->use_tsched = use_tsched = FALSE;
1521 pa_log_info("Successfully enabled mmap() mode.");
1524 pa_log_info("Successfully enabled timer-based scheduling mode.");
1526 /* ALSA might tweak the sample spec, so recalculate the frame size */
1527 frame_size = pa_frame_size(&ss);
1529 find_mixer(u, mapping, pa_modargs_get_value(ma, "control", NULL), ignore_dB);
1531 pa_source_new_data_init(&data);
1532 data.driver = driver;
1535 set_source_name(&data, ma, dev_id, u->device_name, mapping);
1536 pa_source_new_data_set_sample_spec(&data, &ss);
1537 pa_source_new_data_set_channel_map(&data, &map);
1539 pa_alsa_init_proplist_pcm(m->core, data.proplist, u->pcm_handle);
1540 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, u->device_name);
1541 pa_proplist_setf(data.proplist, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE, "%lu", (unsigned long) (period_frames * frame_size * nfrags));
1542 pa_proplist_setf(data.proplist, PA_PROP_DEVICE_BUFFERING_FRAGMENT_SIZE, "%lu", (unsigned long) (period_frames * frame_size));
1543 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_ACCESS_MODE, u->use_tsched ? "mmap+timer" : (u->use_mmap ? "mmap" : "serial"));
1546 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_PROFILE_NAME, mapping->name);
1547 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_PROFILE_DESCRIPTION, mapping->description);
1550 pa_alsa_init_description(data.proplist);
1552 if (u->control_device)
1553 pa_alsa_init_proplist_ctl(data.proplist, u->control_device);
1555 if (pa_modargs_get_proplist(ma, "source_properties", data.proplist, PA_UPDATE_REPLACE) < 0) {
1556 pa_log("Invalid properties");
1557 pa_source_new_data_done(&data);
1561 if (u->mixer_path_set)
1562 pa_alsa_add_ports(&data.ports, u->mixer_path_set);
1564 u->source = pa_source_new(m->core, &data, PA_SOURCE_HARDWARE|PA_SOURCE_LATENCY|(u->use_tsched ? PA_SOURCE_DYNAMIC_LATENCY : 0));
1565 pa_source_new_data_done(&data);
1568 pa_log("Failed to create source object");
1572 u->source->parent.process_msg = source_process_msg;
1573 u->source->update_requested_latency = source_update_requested_latency_cb;
1574 u->source->set_state = source_set_state_cb;
1575 u->source->set_port = source_set_port_cb;
1576 u->source->userdata = u;
1578 pa_source_set_asyncmsgq(u->source, u->thread_mq.inq);
1579 pa_source_set_rtpoll(u->source, u->rtpoll);
1581 u->frame_size = frame_size;
1582 u->fragment_size = frag_size = (uint32_t) (period_frames * frame_size);
1583 u->nfragments = nfrags;
1584 u->hwbuf_size = u->fragment_size * nfrags;
1585 u->tsched_watermark = pa_usec_to_bytes_round_up(pa_bytes_to_usec_round_up(tsched_watermark, &requested_ss), &u->source->sample_spec);
1586 pa_cvolume_mute(&u->hardware_volume, u->source->sample_spec.channels);
1588 pa_log_info("Using %u fragments of size %lu bytes, buffer time is %0.2fms",
1589 nfrags, (long unsigned) u->fragment_size,
1590 (double) pa_bytes_to_usec(u->hwbuf_size, &ss) / PA_USEC_PER_MSEC);
1592 if (u->use_tsched) {
1593 u->watermark_step = pa_usec_to_bytes(TSCHED_WATERMARK_STEP_USEC, &u->source->sample_spec);
1595 fix_min_sleep_wakeup(u);
1596 fix_tsched_watermark(u);
1598 pa_source_set_latency_range(u->source,
1600 pa_bytes_to_usec(u->hwbuf_size, &ss));
1602 pa_log_info("Time scheduling watermark is %0.2fms",
1603 (double) pa_bytes_to_usec(u->tsched_watermark, &ss) / PA_USEC_PER_MSEC);
1605 pa_source_set_fixed_latency(u->source, pa_bytes_to_usec(u->hwbuf_size, &ss));
1609 if (update_sw_params(u) < 0)
1612 if (setup_mixer(u, ignore_dB) < 0)
1615 pa_alsa_dump(PA_LOG_DEBUG, u->pcm_handle);
1617 if (!(u->thread = pa_thread_new(thread_func, u))) {
1618 pa_log("Failed to create thread.");
1621 /* Get initial mixer settings */
1622 if (data.volume_is_set) {
1623 if (u->source->set_volume)
1624 u->source->set_volume(u->source);
1626 if (u->source->get_volume)
1627 u->source->get_volume(u->source);
1630 if (data.muted_is_set) {
1631 if (u->source->set_mute)
1632 u->source->set_mute(u->source);
1634 if (u->source->get_mute)
1635 u->source->get_mute(u->source);
1638 pa_source_put(u->source);
1641 pa_alsa_profile_set_free(profile_set);
1651 pa_alsa_profile_set_free(profile_set);
1656 static void userdata_free(struct userdata *u) {
1660 pa_source_unlink(u->source);
1663 pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
1664 pa_thread_free(u->thread);
1667 pa_thread_mq_done(&u->thread_mq);
1670 pa_source_unref(u->source);
1672 if (u->alsa_rtpoll_item)
1673 pa_rtpoll_item_free(u->alsa_rtpoll_item);
1676 pa_rtpoll_free(u->rtpoll);
1678 if (u->pcm_handle) {
1679 snd_pcm_drop(u->pcm_handle);
1680 snd_pcm_close(u->pcm_handle);
1684 pa_alsa_fdlist_free(u->mixer_fdl);
1686 if (u->mixer_path_set)
1687 pa_alsa_path_set_free(u->mixer_path_set);
1688 else if (u->mixer_path)
1689 pa_alsa_path_free(u->mixer_path);
1691 if (u->mixer_handle)
1692 snd_mixer_close(u->mixer_handle);
1695 pa_smoother_free(u->smoother);
1700 pa_xfree(u->device_name);
1701 pa_xfree(u->control_device);
1705 void pa_alsa_source_free(pa_source *s) {
1708 pa_source_assert_ref(s);
1709 pa_assert_se(u = s->userdata);