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/i18n.h>
32 #include <pulse/rtclock.h>
33 #include <pulse/timeval.h>
34 #include <pulse/util.h>
35 #include <pulse/xmalloc.h>
37 #include <pulsecore/core-error.h>
38 #include <pulsecore/core.h>
39 #include <pulsecore/module.h>
40 #include <pulsecore/memchunk.h>
41 #include <pulsecore/sink.h>
42 #include <pulsecore/modargs.h>
43 #include <pulsecore/core-rtclock.h>
44 #include <pulsecore/core-util.h>
45 #include <pulsecore/sample-util.h>
46 #include <pulsecore/log.h>
47 #include <pulsecore/macro.h>
48 #include <pulsecore/thread.h>
49 #include <pulsecore/core-error.h>
50 #include <pulsecore/thread-mq.h>
51 #include <pulsecore/rtpoll.h>
52 #include <pulsecore/time-smoother.h>
54 #include <modules/reserve-wrap.h>
56 #include "alsa-util.h"
57 #include "alsa-source.h"
59 /* #define DEBUG_TIMING */
61 #define DEFAULT_DEVICE "default"
63 #define DEFAULT_TSCHED_BUFFER_USEC (2*PA_USEC_PER_SEC) /* 2s */
64 #define DEFAULT_TSCHED_WATERMARK_USEC (20*PA_USEC_PER_MSEC) /* 20ms */
66 #define TSCHED_WATERMARK_INC_STEP_USEC (10*PA_USEC_PER_MSEC) /* 10ms */
67 #define TSCHED_WATERMARK_DEC_STEP_USEC (5*PA_USEC_PER_MSEC) /* 5ms */
68 #define TSCHED_WATERMARK_VERIFY_AFTER_USEC (20*PA_USEC_PER_SEC) /* 20s */
69 #define TSCHED_WATERMARK_INC_THRESHOLD_USEC (0*PA_USEC_PER_MSEC) /* 0ms */
70 #define TSCHED_WATERMARK_DEC_THRESHOLD_USEC (100*PA_USEC_PER_MSEC) /* 100ms */
71 #define TSCHED_WATERMARK_STEP_USEC (10*PA_USEC_PER_MSEC) /* 10ms */
73 #define TSCHED_MIN_SLEEP_USEC (10*PA_USEC_PER_MSEC) /* 10ms */
74 #define TSCHED_MIN_WAKEUP_USEC (4*PA_USEC_PER_MSEC) /* 4ms */
76 #define SMOOTHER_MIN_INTERVAL (2*PA_USEC_PER_MSEC) /* 2ms */
77 #define SMOOTHER_MAX_INTERVAL (200*PA_USEC_PER_MSEC) /* 200ms */
79 #define VOLUME_ACCURACY (PA_VOLUME_NORM/100)
87 pa_thread_mq thread_mq;
90 snd_pcm_t *pcm_handle;
92 pa_alsa_fdlist *mixer_fdl;
93 snd_mixer_t *mixer_handle;
94 pa_alsa_path_set *mixer_path_set;
95 pa_alsa_path *mixer_path;
97 pa_cvolume hardware_volume;
109 watermark_inc_threshold,
110 watermark_dec_threshold;
112 pa_usec_t watermark_dec_not_before;
117 char *control_device;
119 pa_bool_t use_mmap:1, use_tsched:1;
121 pa_rtpoll_item *alsa_rtpoll_item;
123 snd_mixer_selem_channel_id_t mixer_map[SND_MIXER_SCHN_LAST];
125 pa_smoother *smoother;
127 pa_usec_t smoother_interval;
128 pa_usec_t last_smoother_update;
130 pa_reserve_wrapper *reserve;
131 pa_hook_slot *reserve_slot;
132 pa_reserve_monitor_wrapper *monitor;
133 pa_hook_slot *monitor_slot;
136 static void userdata_free(struct userdata *u);
138 static pa_hook_result_t reserve_cb(pa_reserve_wrapper *r, void *forced, struct userdata *u) {
142 if (pa_source_suspend(u->source, TRUE, PA_SUSPEND_APPLICATION) < 0)
143 return PA_HOOK_CANCEL;
148 static void reserve_done(struct userdata *u) {
151 if (u->reserve_slot) {
152 pa_hook_slot_free(u->reserve_slot);
153 u->reserve_slot = NULL;
157 pa_reserve_wrapper_unref(u->reserve);
162 static void reserve_update(struct userdata *u) {
163 const char *description;
166 if (!u->source || !u->reserve)
169 if ((description = pa_proplist_gets(u->source->proplist, PA_PROP_DEVICE_DESCRIPTION)))
170 pa_reserve_wrapper_set_application_device_name(u->reserve, description);
173 static int reserve_init(struct userdata *u, const char *dname) {
182 if (pa_in_system_mode())
185 /* We are resuming, try to lock the device */
186 if (!(rname = pa_alsa_get_reserve_name(dname)))
189 u->reserve = pa_reserve_wrapper_get(u->core, rname);
197 pa_assert(!u->reserve_slot);
198 u->reserve_slot = pa_hook_connect(pa_reserve_wrapper_hook(u->reserve), PA_HOOK_NORMAL, (pa_hook_cb_t) reserve_cb, u);
203 static pa_hook_result_t monitor_cb(pa_reserve_monitor_wrapper *w, void* busy, struct userdata *u) {
209 b = PA_PTR_TO_UINT(busy) && !u->reserve;
211 pa_source_suspend(u->source, b, PA_SUSPEND_APPLICATION);
215 static void monitor_done(struct userdata *u) {
218 if (u->monitor_slot) {
219 pa_hook_slot_free(u->monitor_slot);
220 u->monitor_slot = NULL;
224 pa_reserve_monitor_wrapper_unref(u->monitor);
229 static int reserve_monitor_init(struct userdata *u, const char *dname) {
235 if (pa_in_system_mode())
238 /* We are resuming, try to lock the device */
239 if (!(rname = pa_alsa_get_reserve_name(dname)))
242 u->monitor = pa_reserve_monitor_wrapper_get(u->core, rname);
248 pa_assert(!u->monitor_slot);
249 u->monitor_slot = pa_hook_connect(pa_reserve_monitor_wrapper_hook(u->monitor), PA_HOOK_NORMAL, (pa_hook_cb_t) monitor_cb, u);
254 static void fix_min_sleep_wakeup(struct userdata *u) {
255 size_t max_use, max_use_2;
257 pa_assert(u->use_tsched);
259 max_use = u->hwbuf_size - u->hwbuf_unused;
260 max_use_2 = pa_frame_align(max_use/2, &u->source->sample_spec);
262 u->min_sleep = pa_usec_to_bytes(TSCHED_MIN_SLEEP_USEC, &u->source->sample_spec);
263 u->min_sleep = PA_CLAMP(u->min_sleep, u->frame_size, max_use_2);
265 u->min_wakeup = pa_usec_to_bytes(TSCHED_MIN_WAKEUP_USEC, &u->source->sample_spec);
266 u->min_wakeup = PA_CLAMP(u->min_wakeup, u->frame_size, max_use_2);
269 static void fix_tsched_watermark(struct userdata *u) {
272 pa_assert(u->use_tsched);
274 max_use = u->hwbuf_size - u->hwbuf_unused;
276 if (u->tsched_watermark > max_use - u->min_sleep)
277 u->tsched_watermark = max_use - u->min_sleep;
279 if (u->tsched_watermark < u->min_wakeup)
280 u->tsched_watermark = u->min_wakeup;
283 static void increase_watermark(struct userdata *u) {
284 size_t old_watermark;
285 pa_usec_t old_min_latency, new_min_latency;
288 pa_assert(u->use_tsched);
290 /* First, just try to increase the watermark */
291 old_watermark = u->tsched_watermark;
292 u->tsched_watermark = PA_MIN(u->tsched_watermark * 2, u->tsched_watermark + u->watermark_inc_step);
293 fix_tsched_watermark(u);
295 if (old_watermark != u->tsched_watermark) {
296 pa_log_info("Increasing wakeup watermark to %0.2f ms",
297 (double) pa_bytes_to_usec(u->tsched_watermark, &u->source->sample_spec) / PA_USEC_PER_MSEC);
301 /* Hmm, we cannot increase the watermark any further, hence let's raise the latency */
302 old_min_latency = u->source->thread_info.min_latency;
303 new_min_latency = PA_MIN(old_min_latency * 2, old_min_latency + TSCHED_WATERMARK_INC_STEP_USEC);
304 new_min_latency = PA_MIN(new_min_latency, u->source->thread_info.max_latency);
306 if (old_min_latency != new_min_latency) {
307 pa_log_info("Increasing minimal latency to %0.2f ms",
308 (double) new_min_latency / PA_USEC_PER_MSEC);
310 pa_source_set_latency_range_within_thread(u->source, new_min_latency, u->source->thread_info.max_latency);
313 /* When we reach this we're officialy fucked! */
316 static void decrease_watermark(struct userdata *u) {
317 size_t old_watermark;
321 pa_assert(u->use_tsched);
323 now = pa_rtclock_now();
325 if (u->watermark_dec_not_before <= 0)
328 if (u->watermark_dec_not_before > now)
331 old_watermark = u->tsched_watermark;
333 if (u->tsched_watermark < u->watermark_dec_step)
334 u->tsched_watermark = u->tsched_watermark / 2;
336 u->tsched_watermark = PA_MAX(u->tsched_watermark / 2, u->tsched_watermark - u->watermark_dec_step);
338 fix_tsched_watermark(u);
340 if (old_watermark != u->tsched_watermark)
341 pa_log_info("Decreasing wakeup watermark to %0.2f ms",
342 (double) pa_bytes_to_usec(u->tsched_watermark, &u->source->sample_spec) / PA_USEC_PER_MSEC);
344 /* We don't change the latency range*/
347 u->watermark_dec_not_before = now + TSCHED_WATERMARK_VERIFY_AFTER_USEC;
350 static pa_usec_t hw_sleep_time(struct userdata *u, pa_usec_t *sleep_usec, pa_usec_t*process_usec) {
353 pa_assert(sleep_usec);
354 pa_assert(process_usec);
357 pa_assert(u->use_tsched);
359 usec = pa_source_get_requested_latency_within_thread(u->source);
361 if (usec == (pa_usec_t) -1)
362 usec = pa_bytes_to_usec(u->hwbuf_size, &u->source->sample_spec);
364 wm = pa_bytes_to_usec(u->tsched_watermark, &u->source->sample_spec);
369 *sleep_usec = usec - wm;
373 pa_log_debug("Buffer time: %lu ms; Sleep time: %lu ms; Process time: %lu ms",
374 (unsigned long) (usec / PA_USEC_PER_MSEC),
375 (unsigned long) (*sleep_usec / PA_USEC_PER_MSEC),
376 (unsigned long) (*process_usec / PA_USEC_PER_MSEC));
382 static int try_recover(struct userdata *u, const char *call, int err) {
387 pa_log_debug("%s: %s", call, pa_alsa_strerror(err));
389 pa_assert(err != -EAGAIN);
392 pa_log_debug("%s: Buffer overrun!", call);
394 if (err == -ESTRPIPE)
395 pa_log_debug("%s: System suspended!", call);
397 if ((err = snd_pcm_recover(u->pcm_handle, err, 1)) < 0) {
398 pa_log("%s: %s", call, pa_alsa_strerror(err));
402 snd_pcm_start(u->pcm_handle);
406 static size_t check_left_to_record(struct userdata *u, size_t n_bytes, pa_bool_t on_timeout) {
407 size_t left_to_record;
408 size_t rec_space = u->hwbuf_size - u->hwbuf_unused;
409 pa_bool_t overrun = FALSE;
411 /* We use <= instead of < for this check here because an overrun
412 * only happens after the last sample was processed, not already when
413 * it is removed from the buffer. This is particularly important
414 * when block transfer is used. */
416 if (n_bytes <= rec_space)
417 left_to_record = rec_space - n_bytes;
420 /* We got a dropout. What a mess! */
428 if (pa_log_ratelimit())
429 pa_log_info("Overrun!");
433 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);
437 pa_bool_t reset_not_before = TRUE;
439 if (overrun || left_to_record < u->watermark_inc_threshold)
440 increase_watermark(u);
441 else if (left_to_record > u->watermark_dec_threshold) {
442 reset_not_before = FALSE;
444 /* We decrease the watermark only if have actually been
445 * woken up by a timeout. If something else woke us up
446 * it's too easy to fulfill the deadlines... */
449 decrease_watermark(u);
452 if (reset_not_before)
453 u->watermark_dec_not_before = 0;
456 return left_to_record;
459 static int mmap_read(struct userdata *u, pa_usec_t *sleep_usec, pa_bool_t polled, pa_bool_t on_timeout) {
460 pa_bool_t work_done = FALSE;
461 pa_usec_t max_sleep_usec = 0, process_usec = 0;
462 size_t left_to_record;
466 pa_source_assert_ref(u->source);
469 hw_sleep_time(u, &max_sleep_usec, &process_usec);
475 pa_bool_t after_avail = TRUE;
477 if (PA_UNLIKELY((n = pa_alsa_safe_avail(u->pcm_handle, u->hwbuf_size, &u->source->sample_spec)) < 0)) {
479 if ((r = try_recover(u, "snd_pcm_avail", (int) n)) == 0)
485 n_bytes = (size_t) n * u->frame_size;
488 pa_log_debug("avail: %lu", (unsigned long) n_bytes);
491 left_to_record = check_left_to_record(u, n_bytes, on_timeout);
496 pa_bytes_to_usec(left_to_record, &u->source->sample_spec) > process_usec+max_sleep_usec/2) {
498 pa_log_debug("Not reading, because too early.");
503 if (PA_UNLIKELY(n_bytes <= 0)) {
507 char *dn = pa_alsa_get_driver_name_by_pcm(u->pcm_handle);
508 pa_log(_("ALSA woke us up to read new data from the device, but there was actually nothing to read!\n"
509 "Most likely this is a bug in the ALSA driver '%s'. Please report this issue to the ALSA developers.\n"
510 "We were woken up with POLLIN set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail."),
516 pa_log_debug("Not reading, because not necessary.");
523 pa_log_debug("Not filling up, because already too many iterations.");
532 pa_log_debug("Reading");
537 const snd_pcm_channel_area_t *areas;
538 snd_pcm_uframes_t offset, frames;
541 snd_pcm_sframes_t sframes;
543 frames = (snd_pcm_uframes_t) (n_bytes / u->frame_size);
545 /* pa_log_debug("%lu frames to read", (unsigned long) frames); */
547 if (PA_UNLIKELY((err = pa_alsa_safe_mmap_begin(u->pcm_handle, &areas, &offset, &frames, u->hwbuf_size, &u->source->sample_spec)) < 0)) {
549 if (!after_avail && err == -EAGAIN)
552 if ((r = try_recover(u, "snd_pcm_mmap_begin", err)) == 0)
558 /* Make sure that if these memblocks need to be copied they will fit into one slot */
559 if (frames > pa_mempool_block_size_max(u->source->core->mempool)/u->frame_size)
560 frames = pa_mempool_block_size_max(u->source->core->mempool)/u->frame_size;
562 if (!after_avail && frames == 0)
565 pa_assert(frames > 0);
568 /* Check these are multiples of 8 bit */
569 pa_assert((areas[0].first & 7) == 0);
570 pa_assert((areas[0].step & 7)== 0);
572 /* We assume a single interleaved memory buffer */
573 pa_assert((areas[0].first >> 3) == 0);
574 pa_assert((areas[0].step >> 3) == u->frame_size);
576 p = (uint8_t*) areas[0].addr + (offset * u->frame_size);
578 chunk.memblock = pa_memblock_new_fixed(u->core->mempool, p, frames * u->frame_size, TRUE);
579 chunk.length = pa_memblock_get_length(chunk.memblock);
582 pa_source_post(u->source, &chunk);
583 pa_memblock_unref_fixed(chunk.memblock);
585 if (PA_UNLIKELY((sframes = snd_pcm_mmap_commit(u->pcm_handle, offset, frames)) < 0)) {
587 if ((r = try_recover(u, "snd_pcm_mmap_commit", (int) sframes)) == 0)
595 u->read_count += frames * u->frame_size;
598 pa_log_debug("Read %lu bytes (of possible %lu bytes)", (unsigned long) (frames * u->frame_size), (unsigned long) n_bytes);
601 if ((size_t) frames * u->frame_size >= n_bytes)
604 n_bytes -= (size_t) frames * u->frame_size;
608 *sleep_usec = pa_bytes_to_usec(left_to_record, &u->source->sample_spec);
610 if (*sleep_usec > process_usec)
611 *sleep_usec -= process_usec;
615 return work_done ? 1 : 0;
618 static int unix_read(struct userdata *u, pa_usec_t *sleep_usec, pa_bool_t polled, pa_bool_t on_timeout) {
619 int work_done = FALSE;
620 pa_usec_t max_sleep_usec = 0, process_usec = 0;
621 size_t left_to_record;
625 pa_source_assert_ref(u->source);
628 hw_sleep_time(u, &max_sleep_usec, &process_usec);
634 pa_bool_t after_avail = TRUE;
636 if (PA_UNLIKELY((n = pa_alsa_safe_avail(u->pcm_handle, u->hwbuf_size, &u->source->sample_spec)) < 0)) {
638 if ((r = try_recover(u, "snd_pcm_avail", (int) n)) == 0)
644 n_bytes = (size_t) n * u->frame_size;
645 left_to_record = check_left_to_record(u, n_bytes, on_timeout);
650 pa_bytes_to_usec(left_to_record, &u->source->sample_spec) > process_usec+max_sleep_usec/2)
653 if (PA_UNLIKELY(n_bytes <= 0)) {
657 char *dn = pa_alsa_get_driver_name_by_pcm(u->pcm_handle);
658 pa_log(_("ALSA woke us up to read new data from the device, but there was actually nothing to read!\n"
659 "Most likely this is a bug in the ALSA driver '%s'. Please report this issue to the ALSA developers.\n"
660 "We were woken up with POLLIN set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail."),
670 pa_log_debug("Not filling up, because already too many iterations.");
680 snd_pcm_sframes_t frames;
683 chunk.memblock = pa_memblock_new(u->core->mempool, (size_t) -1);
685 frames = (snd_pcm_sframes_t) (pa_memblock_get_length(chunk.memblock) / u->frame_size);
687 if (frames > (snd_pcm_sframes_t) (n_bytes/u->frame_size))
688 frames = (snd_pcm_sframes_t) (n_bytes/u->frame_size);
690 /* pa_log_debug("%lu frames to read", (unsigned long) n); */
692 p = pa_memblock_acquire(chunk.memblock);
693 frames = snd_pcm_readi(u->pcm_handle, (uint8_t*) p, (snd_pcm_uframes_t) frames);
694 pa_memblock_release(chunk.memblock);
696 if (PA_UNLIKELY(frames < 0)) {
697 pa_memblock_unref(chunk.memblock);
699 if (!after_avail && (int) frames == -EAGAIN)
702 if ((r = try_recover(u, "snd_pcm_readi", (int) frames)) == 0)
708 if (!after_avail && frames == 0) {
709 pa_memblock_unref(chunk.memblock);
713 pa_assert(frames > 0);
717 chunk.length = (size_t) frames * u->frame_size;
719 pa_source_post(u->source, &chunk);
720 pa_memblock_unref(chunk.memblock);
724 u->read_count += frames * u->frame_size;
726 /* pa_log_debug("read %lu frames", (unsigned long) frames); */
728 if ((size_t) frames * u->frame_size >= n_bytes)
731 n_bytes -= (size_t) frames * u->frame_size;
735 *sleep_usec = pa_bytes_to_usec(left_to_record, &u->source->sample_spec);
737 if (*sleep_usec > process_usec)
738 *sleep_usec -= process_usec;
742 return work_done ? 1 : 0;
745 static void update_smoother(struct userdata *u) {
746 snd_pcm_sframes_t delay = 0;
749 pa_usec_t now1 = 0, now2;
750 snd_pcm_status_t *status;
752 snd_pcm_status_alloca(&status);
755 pa_assert(u->pcm_handle);
757 /* Let's update the time smoother */
759 if (PA_UNLIKELY((err = pa_alsa_safe_delay(u->pcm_handle, &delay, u->hwbuf_size, &u->source->sample_spec)) < 0)) {
760 pa_log_warn("Failed to get delay: %s", pa_alsa_strerror(err));
764 if (PA_UNLIKELY((err = snd_pcm_status(u->pcm_handle, status)) < 0))
765 pa_log_warn("Failed to get timestamp: %s", pa_alsa_strerror(err));
767 snd_htimestamp_t htstamp = { 0, 0 };
768 snd_pcm_status_get_htstamp(status, &htstamp);
769 now1 = pa_timespec_load(&htstamp);
772 /* Hmm, if the timestamp is 0, then it wasn't set and we take the current time */
774 now1 = pa_rtclock_now();
776 /* check if the time since the last update is bigger than the interval */
777 if (u->last_smoother_update > 0)
778 if (u->last_smoother_update + u->smoother_interval > now1)
781 position = u->read_count + ((uint64_t) delay * (uint64_t) u->frame_size);
782 now2 = pa_bytes_to_usec(position, &u->source->sample_spec);
784 pa_smoother_put(u->smoother, now1, now2);
786 u->last_smoother_update = now1;
787 /* exponentially increase the update interval up to the MAX limit */
788 u->smoother_interval = PA_MIN (u->smoother_interval * 2, SMOOTHER_MAX_INTERVAL);
791 static pa_usec_t source_get_latency(struct userdata *u) {
793 pa_usec_t now1, now2;
797 now1 = pa_rtclock_now();
798 now2 = pa_smoother_get(u->smoother, now1);
800 delay = (int64_t) now2 - (int64_t) pa_bytes_to_usec(u->read_count, &u->source->sample_spec);
802 return delay >= 0 ? (pa_usec_t) delay : 0;
805 static int build_pollfd(struct userdata *u) {
807 pa_assert(u->pcm_handle);
809 if (u->alsa_rtpoll_item)
810 pa_rtpoll_item_free(u->alsa_rtpoll_item);
812 if (!(u->alsa_rtpoll_item = pa_alsa_build_pollfd(u->pcm_handle, u->rtpoll)))
818 static int suspend(struct userdata *u) {
820 pa_assert(u->pcm_handle);
822 pa_smoother_pause(u->smoother, pa_rtclock_now());
825 snd_pcm_close(u->pcm_handle);
826 u->pcm_handle = NULL;
828 if (u->alsa_rtpoll_item) {
829 pa_rtpoll_item_free(u->alsa_rtpoll_item);
830 u->alsa_rtpoll_item = NULL;
833 pa_log_info("Device suspended...");
838 static int update_sw_params(struct userdata *u) {
839 snd_pcm_uframes_t avail_min;
844 /* Use the full buffer if noone asked us for anything specific */
850 if ((latency = pa_source_get_requested_latency_within_thread(u->source)) != (pa_usec_t) -1) {
853 pa_log_debug("latency set to %0.2fms", (double) latency / PA_USEC_PER_MSEC);
855 b = pa_usec_to_bytes(latency, &u->source->sample_spec);
857 /* We need at least one sample in our buffer */
859 if (PA_UNLIKELY(b < u->frame_size))
862 u->hwbuf_unused = PA_LIKELY(b < u->hwbuf_size) ? (u->hwbuf_size - b) : 0;
865 fix_min_sleep_wakeup(u);
866 fix_tsched_watermark(u);
869 pa_log_debug("hwbuf_unused=%lu", (unsigned long) u->hwbuf_unused);
874 pa_usec_t sleep_usec, process_usec;
876 hw_sleep_time(u, &sleep_usec, &process_usec);
877 avail_min += pa_usec_to_bytes(sleep_usec, &u->source->sample_spec) / u->frame_size;
880 pa_log_debug("setting avail_min=%lu", (unsigned long) avail_min);
882 if ((err = pa_alsa_set_sw_params(u->pcm_handle, avail_min)) < 0) {
883 pa_log("Failed to set software parameters: %s", pa_alsa_strerror(err));
890 static int unsuspend(struct userdata *u) {
895 snd_pcm_uframes_t period_size;
898 pa_assert(!u->pcm_handle);
900 pa_log_info("Trying resume...");
902 if ((err = snd_pcm_open(&u->pcm_handle, u->device_name, SND_PCM_STREAM_CAPTURE,
903 /*SND_PCM_NONBLOCK|*/
904 SND_PCM_NO_AUTO_RESAMPLE|
905 SND_PCM_NO_AUTO_CHANNELS|
906 SND_PCM_NO_AUTO_FORMAT)) < 0) {
907 pa_log("Error opening PCM device %s: %s", u->device_name, pa_alsa_strerror(err));
911 ss = u->source->sample_spec;
912 nfrags = u->nfragments;
913 period_size = u->fragment_size / u->frame_size;
917 if ((err = pa_alsa_set_hw_params(u->pcm_handle, &ss, &nfrags, &period_size, u->hwbuf_size / u->frame_size, &b, &d, TRUE)) < 0) {
918 pa_log("Failed to set hardware parameters: %s", pa_alsa_strerror(err));
922 if (b != u->use_mmap || d != u->use_tsched) {
923 pa_log_warn("Resume failed, couldn't get original access mode.");
927 if (!pa_sample_spec_equal(&ss, &u->source->sample_spec)) {
928 pa_log_warn("Resume failed, couldn't restore original sample settings.");
932 if (nfrags != u->nfragments || period_size*u->frame_size != u->fragment_size) {
933 pa_log_warn("Resume failed, couldn't restore original fragment settings. (Old: %lu*%lu, New %lu*%lu)",
934 (unsigned long) u->nfragments, (unsigned long) u->fragment_size,
935 (unsigned long) nfrags, period_size * u->frame_size);
939 if (update_sw_params(u) < 0)
942 if (build_pollfd(u) < 0)
945 /* FIXME: We need to reload the volume somehow */
947 snd_pcm_start(u->pcm_handle);
950 pa_smoother_reset(u->smoother, pa_rtclock_now(), TRUE);
951 u->smoother_interval = SMOOTHER_MIN_INTERVAL;
952 u->last_smoother_update = 0;
954 pa_log_info("Resumed successfully...");
960 snd_pcm_close(u->pcm_handle);
961 u->pcm_handle = NULL;
967 static int source_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
968 struct userdata *u = PA_SOURCE(o)->userdata;
972 case PA_SOURCE_MESSAGE_GET_LATENCY: {
976 r = source_get_latency(u);
978 *((pa_usec_t*) data) = r;
983 case PA_SOURCE_MESSAGE_SET_STATE:
985 switch ((pa_source_state_t) PA_PTR_TO_UINT(data)) {
987 case PA_SOURCE_SUSPENDED:
988 pa_assert(PA_SOURCE_IS_OPENED(u->source->thread_info.state));
996 case PA_SOURCE_RUNNING:
998 if (u->source->thread_info.state == PA_SOURCE_INIT) {
999 if (build_pollfd(u) < 0)
1002 snd_pcm_start(u->pcm_handle);
1005 if (u->source->thread_info.state == PA_SOURCE_SUSPENDED) {
1006 if (unsuspend(u) < 0)
1012 case PA_SOURCE_UNLINKED:
1013 case PA_SOURCE_INIT:
1014 case PA_SOURCE_INVALID_STATE:
1021 return pa_source_process_msg(o, code, data, offset, chunk);
1024 /* Called from main context */
1025 static int source_set_state_cb(pa_source *s, pa_source_state_t new_state) {
1026 pa_source_state_t old_state;
1029 pa_source_assert_ref(s);
1030 pa_assert_se(u = s->userdata);
1032 old_state = pa_source_get_state(u->source);
1034 if (PA_SINK_IS_OPENED(old_state) && new_state == PA_SINK_SUSPENDED)
1036 else if (old_state == PA_SINK_SUSPENDED && PA_SINK_IS_OPENED(new_state))
1037 if (reserve_init(u, u->device_name) < 0)
1043 static int mixer_callback(snd_mixer_elem_t *elem, unsigned int mask) {
1044 struct userdata *u = snd_mixer_elem_get_callback_private(elem);
1047 pa_assert(u->mixer_handle);
1049 if (mask == SND_CTL_EVENT_MASK_REMOVE)
1052 if (mask & SND_CTL_EVENT_MASK_VALUE) {
1053 pa_source_get_volume(u->source, TRUE);
1054 pa_source_get_mute(u->source, TRUE);
1060 static void source_get_volume_cb(pa_source *s) {
1061 struct userdata *u = s->userdata;
1063 char t[PA_CVOLUME_SNPRINT_MAX];
1066 pa_assert(u->mixer_path);
1067 pa_assert(u->mixer_handle);
1069 if (pa_alsa_path_get_volume(u->mixer_path, u->mixer_handle, &s->channel_map, &r) < 0)
1072 /* Shift down by the base volume, so that 0dB becomes maximum volume */
1073 pa_sw_cvolume_multiply_scalar(&r, &r, s->base_volume);
1075 pa_log_debug("Read hardware volume: %s", pa_cvolume_snprint(t, sizeof(t), &r));
1077 if (pa_cvolume_equal(&u->hardware_volume, &r))
1080 s->volume = u->hardware_volume = r;
1082 /* Hmm, so the hardware volume changed, let's reset our software volume */
1083 if (u->mixer_path->has_dB)
1084 pa_source_set_soft_volume(s, NULL);
1087 static void source_set_volume_cb(pa_source *s) {
1088 struct userdata *u = s->userdata;
1090 char t[PA_CVOLUME_SNPRINT_MAX];
1093 pa_assert(u->mixer_path);
1094 pa_assert(u->mixer_handle);
1096 /* Shift up by the base volume */
1097 pa_sw_cvolume_divide_scalar(&r, &s->volume, s->base_volume);
1099 if (pa_alsa_path_set_volume(u->mixer_path, u->mixer_handle, &s->channel_map, &r) < 0)
1102 /* Shift down by the base volume, so that 0dB becomes maximum volume */
1103 pa_sw_cvolume_multiply_scalar(&r, &r, s->base_volume);
1105 u->hardware_volume = r;
1107 if (u->mixer_path->has_dB) {
1108 pa_cvolume new_soft_volume;
1109 pa_bool_t accurate_enough;
1111 /* Match exactly what the user requested by software */
1112 pa_sw_cvolume_divide(&new_soft_volume, &s->volume, &u->hardware_volume);
1114 /* If the adjustment to do in software is only minimal we
1115 * can skip it. That saves us CPU at the expense of a bit of
1118 (pa_cvolume_min(&new_soft_volume) >= (PA_VOLUME_NORM - VOLUME_ACCURACY)) &&
1119 (pa_cvolume_max(&new_soft_volume) <= (PA_VOLUME_NORM + VOLUME_ACCURACY));
1121 pa_log_debug("Requested volume: %s", pa_cvolume_snprint(t, sizeof(t), &s->volume));
1122 pa_log_debug("Got hardware volume: %s", pa_cvolume_snprint(t, sizeof(t), &u->hardware_volume));
1123 pa_log_debug("Calculated software volume: %s (accurate-enough=%s)", pa_cvolume_snprint(t, sizeof(t), &new_soft_volume),
1124 pa_yes_no(accurate_enough));
1126 if (!accurate_enough)
1127 s->soft_volume = new_soft_volume;
1130 pa_log_debug("Wrote hardware volume: %s", pa_cvolume_snprint(t, sizeof(t), &r));
1132 /* We can't match exactly what the user requested, hence let's
1133 * at least tell the user about it */
1139 static void source_get_mute_cb(pa_source *s) {
1140 struct userdata *u = s->userdata;
1144 pa_assert(u->mixer_path);
1145 pa_assert(u->mixer_handle);
1147 if (pa_alsa_path_get_mute(u->mixer_path, u->mixer_handle, &b) < 0)
1153 static void source_set_mute_cb(pa_source *s) {
1154 struct userdata *u = s->userdata;
1157 pa_assert(u->mixer_path);
1158 pa_assert(u->mixer_handle);
1160 pa_alsa_path_set_mute(u->mixer_path, u->mixer_handle, s->muted);
1163 static int source_set_port_cb(pa_source *s, pa_device_port *p) {
1164 struct userdata *u = s->userdata;
1165 pa_alsa_port_data *data;
1169 pa_assert(u->mixer_handle);
1171 data = PA_DEVICE_PORT_DATA(p);
1173 pa_assert_se(u->mixer_path = data->path);
1174 pa_alsa_path_select(u->mixer_path, u->mixer_handle);
1176 if (u->mixer_path->has_volume && u->mixer_path->has_dB) {
1177 s->base_volume = pa_sw_volume_from_dB(-u->mixer_path->max_dB);
1178 s->n_volume_steps = PA_VOLUME_NORM+1;
1180 if (u->mixer_path->max_dB > 0.0)
1181 pa_log_info("Fixing base volume to %0.2f dB", pa_sw_volume_to_dB(s->base_volume));
1183 pa_log_info("No particular base volume set, fixing to 0 dB");
1185 s->base_volume = PA_VOLUME_NORM;
1186 s->n_volume_steps = u->mixer_path->max_volume - u->mixer_path->min_volume + 1;
1190 pa_alsa_setting_select(data->setting, u->mixer_handle);
1200 static void source_update_requested_latency_cb(pa_source *s) {
1201 struct userdata *u = s->userdata;
1207 update_sw_params(u);
1210 static void thread_func(void *userdata) {
1211 struct userdata *u = userdata;
1212 unsigned short revents = 0;
1216 pa_log_debug("Thread starting up");
1218 if (u->core->realtime_scheduling)
1219 pa_make_realtime(u->core->realtime_priority);
1221 pa_thread_mq_install(&u->thread_mq);
1227 pa_log_debug("Loop");
1230 /* Read some data and pass it to the sources */
1231 if (PA_SOURCE_IS_OPENED(u->source->thread_info.state)) {
1233 pa_usec_t sleep_usec = 0;
1234 pa_bool_t on_timeout = pa_rtpoll_timer_elapsed(u->rtpoll);
1237 work_done = mmap_read(u, &sleep_usec, revents & POLLIN, on_timeout);
1239 work_done = unix_read(u, &sleep_usec, revents & POLLIN, on_timeout);
1244 /* pa_log_debug("work_done = %i", work_done); */
1249 if (u->use_tsched) {
1252 /* OK, the capture buffer is now empty, let's
1253 * calculate when to wake up next */
1255 /* pa_log_debug("Waking up in %0.2fms (sound card clock).", (double) sleep_usec / PA_USEC_PER_MSEC); */
1257 /* Convert from the sound card time domain to the
1258 * system time domain */
1259 cusec = pa_smoother_translate(u->smoother, pa_rtclock_now(), sleep_usec);
1261 /* pa_log_debug("Waking up in %0.2fms (system clock).", (double) cusec / PA_USEC_PER_MSEC); */
1263 /* We don't trust the conversion, so we wake up whatever comes first */
1264 pa_rtpoll_set_timer_relative(u->rtpoll, PA_MIN(sleep_usec, cusec));
1266 } else if (u->use_tsched)
1268 /* OK, we're in an invalid state, let's disable our timers */
1269 pa_rtpoll_set_timer_disabled(u->rtpoll);
1271 /* Hmm, nothing to do. Let's sleep */
1272 if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0)
1278 /* Tell ALSA about this and process its response */
1279 if (PA_SOURCE_IS_OPENED(u->source->thread_info.state)) {
1280 struct pollfd *pollfd;
1284 pollfd = pa_rtpoll_item_get_pollfd(u->alsa_rtpoll_item, &n);
1286 if ((err = snd_pcm_poll_descriptors_revents(u->pcm_handle, pollfd, n, &revents)) < 0) {
1287 pa_log("snd_pcm_poll_descriptors_revents() failed: %s", pa_alsa_strerror(err));
1291 if (revents & ~POLLIN) {
1292 if (pa_alsa_recover_from_poll(u->pcm_handle, revents) < 0)
1295 snd_pcm_start(u->pcm_handle);
1296 } else if (revents && u->use_tsched && pa_log_ratelimit())
1297 pa_log_debug("Wakeup from ALSA!");
1304 /* If this was no regular exit from the loop we have to continue
1305 * processing messages until we received PA_MESSAGE_SHUTDOWN */
1306 pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
1307 pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
1310 pa_log_debug("Thread shutting down");
1313 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) {
1319 pa_assert(device_name);
1321 if ((n = pa_modargs_get_value(ma, "source_name", NULL))) {
1322 pa_source_new_data_set_name(data, n);
1323 data->namereg_fail = TRUE;
1327 if ((n = pa_modargs_get_value(ma, "name", NULL)))
1328 data->namereg_fail = TRUE;
1330 n = device_id ? device_id : device_name;
1331 data->namereg_fail = FALSE;
1335 t = pa_sprintf_malloc("alsa_input.%s.%s", n, mapping->name);
1337 t = pa_sprintf_malloc("alsa_input.%s", n);
1339 pa_source_new_data_set_name(data, t);
1343 static void find_mixer(struct userdata *u, pa_alsa_mapping *mapping, const char *element, pa_bool_t ignore_dB) {
1345 if (!mapping && !element)
1348 if (!(u->mixer_handle = pa_alsa_open_mixer_for_pcm(u->pcm_handle, &u->control_device))) {
1349 pa_log_info("Failed to find a working mixer device.");
1355 if (!(u->mixer_path = pa_alsa_path_synthesize(element, PA_ALSA_DIRECTION_INPUT)))
1358 if (pa_alsa_path_probe(u->mixer_path, u->mixer_handle, ignore_dB) < 0)
1361 pa_log_debug("Probed mixer path %s:", u->mixer_path->name);
1362 pa_alsa_path_dump(u->mixer_path);
1365 if (!(u->mixer_path_set = pa_alsa_path_set_new(mapping, PA_ALSA_DIRECTION_INPUT)))
1368 pa_alsa_path_set_probe(u->mixer_path_set, u->mixer_handle, ignore_dB);
1370 pa_log_debug("Probed mixer paths:");
1371 pa_alsa_path_set_dump(u->mixer_path_set);
1378 if (u->mixer_path_set) {
1379 pa_alsa_path_set_free(u->mixer_path_set);
1380 u->mixer_path_set = NULL;
1381 } else if (u->mixer_path) {
1382 pa_alsa_path_free(u->mixer_path);
1383 u->mixer_path = NULL;
1386 if (u->mixer_handle) {
1387 snd_mixer_close(u->mixer_handle);
1388 u->mixer_handle = NULL;
1392 static int setup_mixer(struct userdata *u, pa_bool_t ignore_dB) {
1395 if (!u->mixer_handle)
1398 if (u->source->active_port) {
1399 pa_alsa_port_data *data;
1401 /* We have a list of supported paths, so let's activate the
1402 * one that has been chosen as active */
1404 data = PA_DEVICE_PORT_DATA(u->source->active_port);
1405 u->mixer_path = data->path;
1407 pa_alsa_path_select(data->path, u->mixer_handle);
1410 pa_alsa_setting_select(data->setting, u->mixer_handle);
1414 if (!u->mixer_path && u->mixer_path_set)
1415 u->mixer_path = u->mixer_path_set->paths;
1417 if (u->mixer_path) {
1418 /* Hmm, we have only a single path, then let's activate it */
1420 pa_alsa_path_select(u->mixer_path, u->mixer_handle);
1422 if (u->mixer_path->settings)
1423 pa_alsa_setting_select(u->mixer_path->settings, u->mixer_handle);
1428 if (!u->mixer_path->has_volume)
1429 pa_log_info("Driver does not support hardware volume control, falling back to software volume control.");
1432 if (u->mixer_path->has_dB) {
1433 pa_log_info("Hardware volume ranges from %0.2f dB to %0.2f dB.", u->mixer_path->min_dB, u->mixer_path->max_dB);
1435 u->source->base_volume = pa_sw_volume_from_dB(-u->mixer_path->max_dB);
1436 u->source->n_volume_steps = PA_VOLUME_NORM+1;
1438 if (u->mixer_path->max_dB > 0.0)
1439 pa_log_info("Fixing base volume to %0.2f dB", pa_sw_volume_to_dB(u->source->base_volume));
1441 pa_log_info("No particular base volume set, fixing to 0 dB");
1444 pa_log_info("Hardware volume ranges from %li to %li.", u->mixer_path->min_volume, u->mixer_path->max_volume);
1445 u->source->base_volume = PA_VOLUME_NORM;
1446 u->source->n_volume_steps = u->mixer_path->max_volume - u->mixer_path->min_volume + 1;
1449 u->source->get_volume = source_get_volume_cb;
1450 u->source->set_volume = source_set_volume_cb;
1452 u->source->flags |= PA_SOURCE_HW_VOLUME_CTRL | (u->mixer_path->has_dB ? PA_SOURCE_DECIBEL_VOLUME : 0);
1453 pa_log_info("Using hardware volume control. Hardware dB scale %s.", u->mixer_path->has_dB ? "supported" : "not supported");
1456 if (!u->mixer_path->has_mute) {
1457 pa_log_info("Driver does not support hardware mute control, falling back to software mute control.");
1459 u->source->get_mute = source_get_mute_cb;
1460 u->source->set_mute = source_set_mute_cb;
1461 u->source->flags |= PA_SOURCE_HW_MUTE_CTRL;
1462 pa_log_info("Using hardware mute control.");
1465 u->mixer_fdl = pa_alsa_fdlist_new();
1467 if (pa_alsa_fdlist_set_mixer(u->mixer_fdl, u->mixer_handle, u->core->mainloop) < 0) {
1468 pa_log("Failed to initialize file descriptor monitoring");
1472 if (u->mixer_path_set)
1473 pa_alsa_path_set_set_callback(u->mixer_path_set, u->mixer_handle, mixer_callback, u);
1475 pa_alsa_path_set_callback(u->mixer_path, u->mixer_handle, mixer_callback, u);
1480 pa_source *pa_alsa_source_new(pa_module *m, pa_modargs *ma, const char*driver, pa_card *card, pa_alsa_mapping *mapping) {
1482 struct userdata *u = NULL;
1483 const char *dev_id = NULL;
1484 pa_sample_spec ss, requested_ss;
1486 uint32_t nfrags, hwbuf_size, frag_size, tsched_size, tsched_watermark;
1487 snd_pcm_uframes_t period_frames, tsched_frames;
1489 pa_bool_t use_mmap = TRUE, b, use_tsched = TRUE, d, ignore_dB = FALSE;
1490 pa_source_new_data data;
1491 pa_alsa_profile_set *profile_set = NULL;
1496 ss = m->core->default_sample_spec;
1497 map = m->core->default_channel_map;
1498 if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_ALSA) < 0) {
1499 pa_log("Failed to parse sample specification");
1504 frame_size = pa_frame_size(&ss);
1506 nfrags = m->core->default_n_fragments;
1507 frag_size = (uint32_t) pa_usec_to_bytes(m->core->default_fragment_size_msec*PA_USEC_PER_MSEC, &ss);
1509 frag_size = (uint32_t) frame_size;
1510 tsched_size = (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_BUFFER_USEC, &ss);
1511 tsched_watermark = (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_WATERMARK_USEC, &ss);
1513 if (pa_modargs_get_value_u32(ma, "fragments", &nfrags) < 0 ||
1514 pa_modargs_get_value_u32(ma, "fragment_size", &frag_size) < 0 ||
1515 pa_modargs_get_value_u32(ma, "tsched_buffer_size", &tsched_size) < 0 ||
1516 pa_modargs_get_value_u32(ma, "tsched_buffer_watermark", &tsched_watermark) < 0) {
1517 pa_log("Failed to parse buffer metrics");
1521 hwbuf_size = frag_size * nfrags;
1522 period_frames = frag_size/frame_size;
1523 tsched_frames = tsched_size/frame_size;
1525 if (pa_modargs_get_value_boolean(ma, "mmap", &use_mmap) < 0) {
1526 pa_log("Failed to parse mmap argument.");
1530 if (pa_modargs_get_value_boolean(ma, "tsched", &use_tsched) < 0) {
1531 pa_log("Failed to parse timer_scheduling argument.");
1535 if (pa_modargs_get_value_boolean(ma, "ignore_dB", &ignore_dB) < 0) {
1536 pa_log("Failed to parse ignore_dB argument.");
1540 if (use_tsched && !pa_rtclock_hrtimer()) {
1541 pa_log_notice("Disabling timer-based scheduling because high-resolution timers are not available from the kernel.");
1545 u = pa_xnew0(struct userdata, 1);
1548 u->use_mmap = use_mmap;
1549 u->use_tsched = use_tsched;
1550 u->rtpoll = pa_rtpoll_new();
1551 pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll);
1553 u->smoother = pa_smoother_new(
1554 DEFAULT_TSCHED_WATERMARK_USEC*2,
1555 DEFAULT_TSCHED_WATERMARK_USEC*2,
1561 u->smoother_interval = SMOOTHER_MIN_INTERVAL;
1563 dev_id = pa_modargs_get_value(
1565 pa_modargs_get_value(ma, "device", DEFAULT_DEVICE));
1567 if (reserve_init(u, dev_id) < 0)
1570 if (reserve_monitor_init(u, dev_id) < 0)
1578 if (!(dev_id = pa_modargs_get_value(ma, "device_id", NULL))) {
1579 pa_log("device_id= not set");
1583 if (!(u->pcm_handle = pa_alsa_open_by_device_id_mapping(
1587 SND_PCM_STREAM_CAPTURE,
1588 &nfrags, &period_frames, tsched_frames,
1592 } else if ((dev_id = pa_modargs_get_value(ma, "device_id", NULL))) {
1594 if (!(profile_set = pa_alsa_profile_set_new(NULL, &map)))
1597 if (!(u->pcm_handle = pa_alsa_open_by_device_id_auto(
1601 SND_PCM_STREAM_CAPTURE,
1602 &nfrags, &period_frames, tsched_frames,
1603 &b, &d, profile_set, &mapping)))
1608 if (!(u->pcm_handle = pa_alsa_open_by_device_string(
1609 pa_modargs_get_value(ma, "device", DEFAULT_DEVICE),
1612 SND_PCM_STREAM_CAPTURE,
1613 &nfrags, &period_frames, tsched_frames,
1618 pa_assert(u->device_name);
1619 pa_log_info("Successfully opened device %s.", u->device_name);
1621 if (pa_alsa_pcm_is_modem(u->pcm_handle)) {
1622 pa_log_notice("Device %s is modem, refusing further initialization.", u->device_name);
1627 pa_log_info("Selected mapping '%s' (%s).", mapping->description, mapping->name);
1629 if (use_mmap && !b) {
1630 pa_log_info("Device doesn't support mmap(), falling back to UNIX read/write mode.");
1631 u->use_mmap = use_mmap = FALSE;
1634 if (use_tsched && (!b || !d)) {
1635 pa_log_info("Cannot enable timer-based scheduling, falling back to sound IRQ scheduling.");
1636 u->use_tsched = use_tsched = FALSE;
1639 if (use_tsched && !pa_alsa_pcm_is_hw(u->pcm_handle)) {
1640 pa_log_info("Device is not a hardware device, disabling timer-based scheduling.");
1641 u->use_tsched = use_tsched = FALSE;
1645 pa_log_info("Successfully enabled mmap() mode.");
1648 pa_log_info("Successfully enabled timer-based scheduling mode.");
1650 /* ALSA might tweak the sample spec, so recalculate the frame size */
1651 frame_size = pa_frame_size(&ss);
1653 find_mixer(u, mapping, pa_modargs_get_value(ma, "control", NULL), ignore_dB);
1655 pa_source_new_data_init(&data);
1656 data.driver = driver;
1659 set_source_name(&data, ma, dev_id, u->device_name, mapping);
1660 pa_source_new_data_set_sample_spec(&data, &ss);
1661 pa_source_new_data_set_channel_map(&data, &map);
1663 pa_alsa_init_proplist_pcm(m->core, data.proplist, u->pcm_handle);
1664 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, u->device_name);
1665 pa_proplist_setf(data.proplist, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE, "%lu", (unsigned long) (period_frames * frame_size * nfrags));
1666 pa_proplist_setf(data.proplist, PA_PROP_DEVICE_BUFFERING_FRAGMENT_SIZE, "%lu", (unsigned long) (period_frames * frame_size));
1667 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_ACCESS_MODE, u->use_tsched ? "mmap+timer" : (u->use_mmap ? "mmap" : "serial"));
1670 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_PROFILE_NAME, mapping->name);
1671 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_PROFILE_DESCRIPTION, mapping->description);
1674 pa_alsa_init_description(data.proplist);
1676 if (u->control_device)
1677 pa_alsa_init_proplist_ctl(data.proplist, u->control_device);
1679 if (pa_modargs_get_proplist(ma, "source_properties", data.proplist, PA_UPDATE_REPLACE) < 0) {
1680 pa_log("Invalid properties");
1681 pa_source_new_data_done(&data);
1685 if (u->mixer_path_set)
1686 pa_alsa_add_ports(&data.ports, u->mixer_path_set);
1688 u->source = pa_source_new(m->core, &data, PA_SOURCE_HARDWARE|PA_SOURCE_LATENCY|(u->use_tsched ? PA_SOURCE_DYNAMIC_LATENCY : 0));
1689 pa_source_new_data_done(&data);
1692 pa_log("Failed to create source object");
1696 u->source->parent.process_msg = source_process_msg;
1697 u->source->update_requested_latency = source_update_requested_latency_cb;
1698 u->source->set_state = source_set_state_cb;
1699 u->source->set_port = source_set_port_cb;
1700 u->source->userdata = u;
1702 pa_source_set_asyncmsgq(u->source, u->thread_mq.inq);
1703 pa_source_set_rtpoll(u->source, u->rtpoll);
1705 u->frame_size = frame_size;
1706 u->fragment_size = frag_size = (uint32_t) (period_frames * frame_size);
1707 u->nfragments = nfrags;
1708 u->hwbuf_size = u->fragment_size * nfrags;
1709 pa_cvolume_mute(&u->hardware_volume, u->source->sample_spec.channels);
1711 pa_log_info("Using %u fragments of size %lu bytes, buffer time is %0.2fms",
1712 nfrags, (long unsigned) u->fragment_size,
1713 (double) pa_bytes_to_usec(u->hwbuf_size, &ss) / PA_USEC_PER_MSEC);
1715 if (u->use_tsched) {
1716 u->tsched_watermark = pa_usec_to_bytes_round_up(pa_bytes_to_usec_round_up(tsched_watermark, &requested_ss), &u->source->sample_spec);
1718 u->watermark_inc_step = pa_usec_to_bytes(TSCHED_WATERMARK_INC_STEP_USEC, &u->source->sample_spec);
1719 u->watermark_dec_step = pa_usec_to_bytes(TSCHED_WATERMARK_DEC_STEP_USEC, &u->source->sample_spec);
1721 u->watermark_inc_threshold = pa_usec_to_bytes_round_up(TSCHED_WATERMARK_INC_THRESHOLD_USEC, &u->source->sample_spec);
1722 u->watermark_dec_threshold = pa_usec_to_bytes_round_up(TSCHED_WATERMARK_DEC_THRESHOLD_USEC, &u->source->sample_spec);
1724 fix_min_sleep_wakeup(u);
1725 fix_tsched_watermark(u);
1727 pa_source_set_latency_range(u->source,
1729 pa_bytes_to_usec(u->hwbuf_size, &ss));
1731 pa_log_info("Time scheduling watermark is %0.2fms",
1732 (double) pa_bytes_to_usec(u->tsched_watermark, &ss) / PA_USEC_PER_MSEC);
1734 pa_source_set_fixed_latency(u->source, pa_bytes_to_usec(u->hwbuf_size, &ss));
1738 if (update_sw_params(u) < 0)
1741 if (setup_mixer(u, ignore_dB) < 0)
1744 pa_alsa_dump(PA_LOG_DEBUG, u->pcm_handle);
1746 if (!(u->thread = pa_thread_new(thread_func, u))) {
1747 pa_log("Failed to create thread.");
1750 /* Get initial mixer settings */
1751 if (data.volume_is_set) {
1752 if (u->source->set_volume)
1753 u->source->set_volume(u->source);
1755 if (u->source->get_volume)
1756 u->source->get_volume(u->source);
1759 if (data.muted_is_set) {
1760 if (u->source->set_mute)
1761 u->source->set_mute(u->source);
1763 if (u->source->get_mute)
1764 u->source->get_mute(u->source);
1767 pa_source_put(u->source);
1770 pa_alsa_profile_set_free(profile_set);
1780 pa_alsa_profile_set_free(profile_set);
1785 static void userdata_free(struct userdata *u) {
1789 pa_source_unlink(u->source);
1792 pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
1793 pa_thread_free(u->thread);
1796 pa_thread_mq_done(&u->thread_mq);
1799 pa_source_unref(u->source);
1801 if (u->alsa_rtpoll_item)
1802 pa_rtpoll_item_free(u->alsa_rtpoll_item);
1805 pa_rtpoll_free(u->rtpoll);
1807 if (u->pcm_handle) {
1808 snd_pcm_drop(u->pcm_handle);
1809 snd_pcm_close(u->pcm_handle);
1813 pa_alsa_fdlist_free(u->mixer_fdl);
1815 if (u->mixer_path_set)
1816 pa_alsa_path_set_free(u->mixer_path_set);
1817 else if (u->mixer_path)
1818 pa_alsa_path_free(u->mixer_path);
1820 if (u->mixer_handle)
1821 snd_mixer_close(u->mixer_handle);
1824 pa_smoother_free(u->smoother);
1829 pa_xfree(u->device_name);
1830 pa_xfree(u->control_device);
1834 void pa_alsa_source_free(pa_source *s) {
1837 pa_source_assert_ref(s);
1838 pa_assert_se(u = s->userdata);