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-rw-r--r--src/modules/alsa/alsa-source.c306
1 files changed, 219 insertions, 87 deletions
diff --git a/src/modules/alsa/alsa-source.c b/src/modules/alsa/alsa-source.c
index a6760e1e..fa3ac0aa 100644
--- a/src/modules/alsa/alsa-source.c
+++ b/src/modules/alsa/alsa-source.c
@@ -59,11 +59,24 @@
/* #define DEBUG_TIMING */
#define DEFAULT_DEVICE "default"
-#define DEFAULT_TSCHED_BUFFER_USEC (2*PA_USEC_PER_SEC) /* 2s */
-#define DEFAULT_TSCHED_WATERMARK_USEC (20*PA_USEC_PER_MSEC) /* 20ms */
-#define TSCHED_WATERMARK_STEP_USEC (10*PA_USEC_PER_MSEC) /* 10ms */
-#define TSCHED_MIN_SLEEP_USEC (10*PA_USEC_PER_MSEC) /* 10ms */
-#define TSCHED_MIN_WAKEUP_USEC (4*PA_USEC_PER_MSEC) /* 4ms */
+
+#define DEFAULT_TSCHED_BUFFER_USEC (2*PA_USEC_PER_SEC) /* 2s */
+#define DEFAULT_TSCHED_WATERMARK_USEC (20*PA_USEC_PER_MSEC) /* 20ms */
+
+#define TSCHED_WATERMARK_INC_STEP_USEC (10*PA_USEC_PER_MSEC) /* 10ms */
+#define TSCHED_WATERMARK_DEC_STEP_USEC (5*PA_USEC_PER_MSEC) /* 5ms */
+#define TSCHED_WATERMARK_VERIFY_AFTER_USEC (20*PA_USEC_PER_SEC) /* 20s */
+#define TSCHED_WATERMARK_INC_THRESHOLD_USEC (0*PA_USEC_PER_MSEC) /* 0ms */
+#define TSCHED_WATERMARK_DEC_THRESHOLD_USEC (100*PA_USEC_PER_MSEC) /* 100ms */
+#define TSCHED_WATERMARK_STEP_USEC (10*PA_USEC_PER_MSEC) /* 10ms */
+
+#define TSCHED_MIN_SLEEP_USEC (10*PA_USEC_PER_MSEC) /* 10ms */
+#define TSCHED_MIN_WAKEUP_USEC (4*PA_USEC_PER_MSEC) /* 4ms */
+
+#define SMOOTHER_MIN_INTERVAL (2*PA_USEC_PER_MSEC) /* 2ms */
+#define SMOOTHER_MAX_INTERVAL (200*PA_USEC_PER_MSEC) /* 200ms */
+
+#define VOLUME_ACCURACY (PA_VOLUME_NORM/100)
struct userdata {
pa_core *core;
@@ -91,9 +104,12 @@ struct userdata {
hwbuf_unused,
min_sleep,
min_wakeup,
- watermark_step;
+ watermark_inc_step,
+ watermark_dec_step,
+ watermark_inc_threshold,
+ watermark_dec_threshold;
- unsigned nfragments;
+ pa_usec_t watermark_dec_not_before;
char *device_name;
char *control_device;
@@ -106,6 +122,8 @@ struct userdata {
pa_smoother *smoother;
uint64_t read_count;
+ pa_usec_t smoother_interval;
+ pa_usec_t last_smoother_update;
pa_reserve_wrapper *reserve;
pa_hook_slot *reserve_slot;
@@ -234,6 +252,7 @@ static int reserve_monitor_init(struct userdata *u, const char *dname) {
static void fix_min_sleep_wakeup(struct userdata *u) {
size_t max_use, max_use_2;
pa_assert(u);
+ pa_assert(u->use_tsched);
max_use = u->hwbuf_size - u->hwbuf_unused;
max_use_2 = pa_frame_align(max_use/2, &u->source->sample_spec);
@@ -248,6 +267,7 @@ static void fix_min_sleep_wakeup(struct userdata *u) {
static void fix_tsched_watermark(struct userdata *u) {
size_t max_use;
pa_assert(u);
+ pa_assert(u->use_tsched);
max_use = u->hwbuf_size - u->hwbuf_unused;
@@ -258,7 +278,7 @@ static void fix_tsched_watermark(struct userdata *u) {
u->tsched_watermark = u->min_wakeup;
}
-static void adjust_after_overrun(struct userdata *u) {
+static void increase_watermark(struct userdata *u) {
size_t old_watermark;
pa_usec_t old_min_latency, new_min_latency;
@@ -267,36 +287,72 @@ static void adjust_after_overrun(struct userdata *u) {
/* First, just try to increase the watermark */
old_watermark = u->tsched_watermark;
- u->tsched_watermark = PA_MIN(u->tsched_watermark * 2, u->tsched_watermark + u->watermark_step);
-
+ u->tsched_watermark = PA_MIN(u->tsched_watermark * 2, u->tsched_watermark + u->watermark_inc_step);
fix_tsched_watermark(u);
if (old_watermark != u->tsched_watermark) {
- pa_log_notice("Increasing wakeup watermark to %0.2f ms",
- (double) pa_bytes_to_usec(u->tsched_watermark, &u->source->sample_spec) / PA_USEC_PER_MSEC);
+ pa_log_info("Increasing wakeup watermark to %0.2f ms",
+ (double) pa_bytes_to_usec(u->tsched_watermark, &u->source->sample_spec) / PA_USEC_PER_MSEC);
return;
}
/* Hmm, we cannot increase the watermark any further, hence let's raise the latency */
old_min_latency = u->source->thread_info.min_latency;
- new_min_latency = PA_MIN(old_min_latency * 2, old_min_latency + TSCHED_WATERMARK_STEP_USEC);
+ new_min_latency = PA_MIN(old_min_latency * 2, old_min_latency + TSCHED_WATERMARK_INC_STEP_USEC);
new_min_latency = PA_MIN(new_min_latency, u->source->thread_info.max_latency);
if (old_min_latency != new_min_latency) {
- pa_log_notice("Increasing minimal latency to %0.2f ms",
- (double) new_min_latency / PA_USEC_PER_MSEC);
+ pa_log_info("Increasing minimal latency to %0.2f ms",
+ (double) new_min_latency / PA_USEC_PER_MSEC);
pa_source_set_latency_range_within_thread(u->source, new_min_latency, u->source->thread_info.max_latency);
- return;
}
/* When we reach this we're officialy fucked! */
}
+static void decrease_watermark(struct userdata *u) {
+ size_t old_watermark;
+ pa_usec_t now;
+
+ pa_assert(u);
+ pa_assert(u->use_tsched);
+
+ now = pa_rtclock_now();
+
+ if (u->watermark_dec_not_before <= 0)
+ goto restart;
+
+ if (u->watermark_dec_not_before > now)
+ return;
+
+ old_watermark = u->tsched_watermark;
+
+ if (u->tsched_watermark < u->watermark_dec_step)
+ u->tsched_watermark = u->tsched_watermark / 2;
+ else
+ u->tsched_watermark = PA_MAX(u->tsched_watermark / 2, u->tsched_watermark - u->watermark_dec_step);
+
+ fix_tsched_watermark(u);
+
+ if (old_watermark != u->tsched_watermark)
+ pa_log_info("Decreasing wakeup watermark to %0.2f ms",
+ (double) pa_bytes_to_usec(u->tsched_watermark, &u->source->sample_spec) / PA_USEC_PER_MSEC);
+
+ /* We don't change the latency range*/
+
+restart:
+ u->watermark_dec_not_before = now + TSCHED_WATERMARK_VERIFY_AFTER_USEC;
+}
+
static pa_usec_t hw_sleep_time(struct userdata *u, pa_usec_t *sleep_usec, pa_usec_t*process_usec) {
pa_usec_t wm, usec;
+ pa_assert(sleep_usec);
+ pa_assert(process_usec);
+
pa_assert(u);
+ pa_assert(u->use_tsched);
usec = pa_source_get_requested_latency_within_thread(u->source);
@@ -333,6 +389,9 @@ static int try_recover(struct userdata *u, const char *call, int err) {
if (err == -EPIPE)
pa_log_debug("%s: Buffer overrun!", call);
+ if (err == -ESTRPIPE)
+ pa_log_debug("%s: System suspended!", call);
+
if ((err = snd_pcm_recover(u->pcm_handle, err, 1)) < 0) {
pa_log("%s: %s", call, pa_alsa_strerror(err));
return -1;
@@ -342,24 +401,23 @@ static int try_recover(struct userdata *u, const char *call, int err) {
return 0;
}
-static size_t check_left_to_record(struct userdata *u, size_t n_bytes) {
+static size_t check_left_to_record(struct userdata *u, size_t n_bytes, pa_bool_t on_timeout) {
size_t left_to_record;
size_t rec_space = u->hwbuf_size - u->hwbuf_unused;
+ pa_bool_t overrun = FALSE;
/* We use <= instead of < for this check here because an overrun
* only happens after the last sample was processed, not already when
* it is removed from the buffer. This is particularly important
* when block transfer is used. */
- if (n_bytes <= rec_space) {
+ if (n_bytes <= rec_space)
left_to_record = rec_space - n_bytes;
+ else {
-#ifdef DEBUG_TIMING
- 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);
-#endif
-
- } else {
+ /* We got a dropout. What a mess! */
left_to_record = 0;
+ overrun = TRUE;
#ifdef DEBUG_TIMING
PA_DEBUG_TRAP;
@@ -367,15 +425,36 @@ static size_t check_left_to_record(struct userdata *u, size_t n_bytes) {
if (pa_log_ratelimit())
pa_log_info("Overrun!");
+ }
- if (u->use_tsched)
- adjust_after_overrun(u);
+#ifdef DEBUG_TIMING
+ 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);
+#endif
+
+ if (u->use_tsched) {
+ pa_bool_t reset_not_before = TRUE;
+
+ if (overrun || left_to_record < u->watermark_inc_threshold)
+ increase_watermark(u);
+ else if (left_to_record > u->watermark_dec_threshold) {
+ reset_not_before = FALSE;
+
+ /* We decrease the watermark only if have actually been
+ * woken up by a timeout. If something else woke us up
+ * it's too easy to fulfill the deadlines... */
+
+ if (on_timeout)
+ decrease_watermark(u);
+ }
+
+ if (reset_not_before)
+ u->watermark_dec_not_before = 0;
}
return left_to_record;
}
-static int mmap_read(struct userdata *u, pa_usec_t *sleep_usec, pa_bool_t polled) {
+static int mmap_read(struct userdata *u, pa_usec_t *sleep_usec, pa_bool_t polled, pa_bool_t on_timeout) {
pa_bool_t work_done = FALSE;
pa_usec_t max_sleep_usec = 0, process_usec = 0;
size_t left_to_record;
@@ -391,6 +470,7 @@ static int mmap_read(struct userdata *u, pa_usec_t *sleep_usec, pa_bool_t polled
snd_pcm_sframes_t n;
size_t n_bytes;
int r;
+ pa_bool_t after_avail = TRUE;
if (PA_UNLIKELY((n = pa_alsa_safe_avail(u->pcm_handle, u->hwbuf_size, &u->source->sample_spec)) < 0)) {
@@ -406,7 +486,8 @@ static int mmap_read(struct userdata *u, pa_usec_t *sleep_usec, pa_bool_t polled
pa_log_debug("avail: %lu", (unsigned long) n_bytes);
#endif
- left_to_record = check_left_to_record(u, n_bytes);
+ left_to_record = check_left_to_record(u, n_bytes, on_timeout);
+ on_timeout = FALSE;
if (u->use_tsched)
if (!polled &&
@@ -463,6 +544,9 @@ static int mmap_read(struct userdata *u, pa_usec_t *sleep_usec, pa_bool_t polled
if (PA_UNLIKELY((err = pa_alsa_safe_mmap_begin(u->pcm_handle, &areas, &offset, &frames, u->hwbuf_size, &u->source->sample_spec)) < 0)) {
+ if (!after_avail && err == -EAGAIN)
+ break;
+
if ((r = try_recover(u, "snd_pcm_mmap_begin", err)) == 0)
continue;
@@ -473,6 +557,12 @@ static int mmap_read(struct userdata *u, pa_usec_t *sleep_usec, pa_bool_t polled
if (frames > pa_mempool_block_size_max(u->source->core->mempool)/u->frame_size)
frames = pa_mempool_block_size_max(u->source->core->mempool)/u->frame_size;
+ if (!after_avail && frames == 0)
+ break;
+
+ pa_assert(frames > 0);
+ after_avail = FALSE;
+
/* Check these are multiples of 8 bit */
pa_assert((areas[0].first & 7) == 0);
pa_assert((areas[0].step & 7)== 0);
@@ -523,7 +613,7 @@ static int mmap_read(struct userdata *u, pa_usec_t *sleep_usec, pa_bool_t polled
return work_done ? 1 : 0;
}
-static int unix_read(struct userdata *u, pa_usec_t *sleep_usec, pa_bool_t polled) {
+static int unix_read(struct userdata *u, pa_usec_t *sleep_usec, pa_bool_t polled, pa_bool_t on_timeout) {
int work_done = FALSE;
pa_usec_t max_sleep_usec = 0, process_usec = 0;
size_t left_to_record;
@@ -539,6 +629,7 @@ static int unix_read(struct userdata *u, pa_usec_t *sleep_usec, pa_bool_t polled
snd_pcm_sframes_t n;
size_t n_bytes;
int r;
+ pa_bool_t after_avail = TRUE;
if (PA_UNLIKELY((n = pa_alsa_safe_avail(u->pcm_handle, u->hwbuf_size, &u->source->sample_spec)) < 0)) {
@@ -549,7 +640,8 @@ static int unix_read(struct userdata *u, pa_usec_t *sleep_usec, pa_bool_t polled
}
n_bytes = (size_t) n * u->frame_size;
- left_to_record = check_left_to_record(u, n_bytes);
+ left_to_record = check_left_to_record(u, n_bytes, on_timeout);
+ on_timeout = FALSE;
if (u->use_tsched)
if (!polled &&
@@ -599,17 +691,26 @@ static int unix_read(struct userdata *u, pa_usec_t *sleep_usec, pa_bool_t polled
frames = snd_pcm_readi(u->pcm_handle, (uint8_t*) p, (snd_pcm_uframes_t) frames);
pa_memblock_release(chunk.memblock);
- pa_assert(frames != 0);
-
if (PA_UNLIKELY(frames < 0)) {
pa_memblock_unref(chunk.memblock);
- if ((r = try_recover(u, "snd_pcm_readi", (int) (frames))) == 0)
+ if (!after_avail && (int) frames == -EAGAIN)
+ break;
+
+ if ((r = try_recover(u, "snd_pcm_readi", (int) frames)) == 0)
continue;
return r;
}
+ if (!after_avail && frames == 0) {
+ pa_memblock_unref(chunk.memblock);
+ break;
+ }
+
+ pa_assert(frames > 0);
+ after_avail = FALSE;
+
chunk.index = 0;
chunk.length = (size_t) frames * u->frame_size;
@@ -666,15 +767,23 @@ static void update_smoother(struct userdata *u) {
now1 = pa_timespec_load(&htstamp);
}
- position = u->read_count + ((uint64_t) delay * (uint64_t) u->frame_size);
-
/* Hmm, if the timestamp is 0, then it wasn't set and we take the current time */
if (now1 <= 0)
now1 = pa_rtclock_now();
+ /* check if the time since the last update is bigger than the interval */
+ if (u->last_smoother_update > 0)
+ if (u->last_smoother_update + u->smoother_interval > now1)
+ return;
+
+ position = u->read_count + ((uint64_t) delay * (uint64_t) u->frame_size);
now2 = pa_bytes_to_usec(position, &u->source->sample_spec);
pa_smoother_put(u->smoother, now1, now2);
+
+ u->last_smoother_update = now1;
+ /* exponentially increase the update interval up to the MAX limit */
+ u->smoother_interval = PA_MIN (u->smoother_interval * 2, SMOOTHER_MAX_INTERVAL);
}
static pa_usec_t source_get_latency(struct userdata *u) {
@@ -780,8 +889,7 @@ static int unsuspend(struct userdata *u) {
pa_sample_spec ss;
int err;
pa_bool_t b, d;
- unsigned nfrags;
- snd_pcm_uframes_t period_size;
+ snd_pcm_uframes_t period_size, buffer_size;
pa_assert(u);
pa_assert(!u->pcm_handle);
@@ -789,7 +897,7 @@ static int unsuspend(struct userdata *u) {
pa_log_info("Trying resume...");
if ((err = snd_pcm_open(&u->pcm_handle, u->device_name, SND_PCM_STREAM_CAPTURE,
- /*SND_PCM_NONBLOCK|*/
+ SND_PCM_NONBLOCK|
SND_PCM_NO_AUTO_RESAMPLE|
SND_PCM_NO_AUTO_CHANNELS|
SND_PCM_NO_AUTO_FORMAT)) < 0) {
@@ -798,12 +906,12 @@ static int unsuspend(struct userdata *u) {
}
ss = u->source->sample_spec;
- nfrags = u->nfragments;
period_size = u->fragment_size / u->frame_size;
+ buffer_size = u->hwbuf_size / u->frame_size;
b = u->use_mmap;
d = u->use_tsched;
- if ((err = pa_alsa_set_hw_params(u->pcm_handle, &ss, &nfrags, &period_size, u->hwbuf_size / u->frame_size, &b, &d, TRUE)) < 0) {
+ if ((err = pa_alsa_set_hw_params(u->pcm_handle, &ss, &period_size, &buffer_size, 0, &b, &d, TRUE)) < 0) {
pa_log("Failed to set hardware parameters: %s", pa_alsa_strerror(err));
goto fail;
}
@@ -818,10 +926,11 @@ static int unsuspend(struct userdata *u) {
goto fail;
}
- if (nfrags != u->nfragments || period_size*u->frame_size != u->fragment_size) {
- pa_log_warn("Resume failed, couldn't restore original fragment settings. (Old: %lu*%lu, New %lu*%lu)",
- (unsigned long) u->nfragments, (unsigned long) u->fragment_size,
- (unsigned long) nfrags, period_size * u->frame_size);
+ if (period_size*u->frame_size != u->fragment_size ||
+ buffer_size*u->frame_size != u->hwbuf_size) {
+ pa_log_warn("Resume failed, couldn't restore original fragment settings. (Old: %lu/%lu, New %lu/%lu)",
+ (unsigned long) u->hwbuf_size, (unsigned long) u->fragment_size,
+ (unsigned long) (buffer_size*u->fragment_size), (unsigned long) (period_size*u->frame_size));
goto fail;
}
@@ -834,7 +943,11 @@ static int unsuspend(struct userdata *u) {
/* FIXME: We need to reload the volume somehow */
snd_pcm_start(u->pcm_handle);
- pa_smoother_resume(u->smoother, pa_rtclock_now(), TRUE);
+
+ u->read_count = 0;
+ pa_smoother_reset(u->smoother, pa_rtclock_now(), TRUE);
+ u->smoother_interval = SMOOTHER_MIN_INTERVAL;
+ u->last_smoother_update = 0;
pa_log_info("Resumed successfully...");
@@ -846,7 +959,7 @@ fail:
u->pcm_handle = NULL;
}
- return -1;
+ return -PA_ERR_IO;
}
static int source_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
@@ -869,30 +982,34 @@ static int source_process_msg(pa_msgobject *o, int code, void *data, int64_t off
switch ((pa_source_state_t) PA_PTR_TO_UINT(data)) {
- case PA_SOURCE_SUSPENDED:
+ case PA_SOURCE_SUSPENDED: {
+ int r;
pa_assert(PA_SOURCE_IS_OPENED(u->source->thread_info.state));
- if (suspend(u) < 0)
- return -1;
+ if ((r = suspend(u)) < 0)
+ return r;
break;
+ }
case PA_SOURCE_IDLE:
- case PA_SOURCE_RUNNING:
+ case PA_SOURCE_RUNNING: {
+ int r;
if (u->source->thread_info.state == PA_SOURCE_INIT) {
if (build_pollfd(u) < 0)
- return -1;
+ return -PA_ERR_IO;
snd_pcm_start(u->pcm_handle);
}
if (u->source->thread_info.state == PA_SOURCE_SUSPENDED) {
- if (unsuspend(u) < 0)
- return -1;
+ if ((r = unsuspend(u)) < 0)
+ return r;
}
break;
+ }
case PA_SOURCE_UNLINKED:
case PA_SOURCE_INIT:
@@ -920,7 +1037,7 @@ static int source_set_state_cb(pa_source *s, pa_source_state_t new_state) {
reserve_done(u);
else if (old_state == PA_SINK_SUSPENDED && PA_SINK_IS_OPENED(new_state))
if (reserve_init(u, u->device_name) < 0)
- return -1;
+ return -PA_ERR_BUSY;
return 0;
}
@@ -962,15 +1079,11 @@ static void source_get_volume_cb(pa_source *s) {
if (pa_cvolume_equal(&u->hardware_volume, &r))
return;
- s->virtual_volume = u->hardware_volume = r;
-
- if (u->mixer_path->has_dB) {
- pa_cvolume reset;
+ s->volume = u->hardware_volume = r;
- /* Hmm, so the hardware volume changed, let's reset our software volume */
- pa_cvolume_reset(&reset, s->sample_spec.channels);
- pa_source_set_soft_volume(s, &reset);
- }
+ /* Hmm, so the hardware volume changed, let's reset our software volume */
+ if (u->mixer_path->has_dB)
+ pa_source_set_soft_volume(s, NULL);
}
static void source_set_volume_cb(pa_source *s) {
@@ -983,7 +1096,7 @@ static void source_set_volume_cb(pa_source *s) {
pa_assert(u->mixer_handle);
/* Shift up by the base volume */
- pa_sw_cvolume_divide_scalar(&r, &s->virtual_volume, s->base_volume);
+ pa_sw_cvolume_divide_scalar(&r, &s->volume, s->base_volume);
if (pa_alsa_path_set_volume(u->mixer_path, u->mixer_handle, &s->channel_map, &r) < 0)
return;
@@ -994,13 +1107,26 @@ static void source_set_volume_cb(pa_source *s) {
u->hardware_volume = r;
if (u->mixer_path->has_dB) {
+ pa_cvolume new_soft_volume;
+ pa_bool_t accurate_enough;
/* Match exactly what the user requested by software */
- pa_sw_cvolume_divide(&s->soft_volume, &s->virtual_volume, &u->hardware_volume);
+ pa_sw_cvolume_divide(&new_soft_volume, &s->volume, &u->hardware_volume);
+
+ /* If the adjustment to do in software is only minimal we
+ * can skip it. That saves us CPU at the expense of a bit of
+ * accuracy */
+ accurate_enough =
+ (pa_cvolume_min(&new_soft_volume) >= (PA_VOLUME_NORM - VOLUME_ACCURACY)) &&
+ (pa_cvolume_max(&new_soft_volume) <= (PA_VOLUME_NORM + VOLUME_ACCURACY));
- pa_log_debug("Requested volume: %s", pa_cvolume_snprint(t, sizeof(t), &s->virtual_volume));
+ pa_log_debug("Requested volume: %s", pa_cvolume_snprint(t, sizeof(t), &s->volume));
pa_log_debug("Got hardware volume: %s", pa_cvolume_snprint(t, sizeof(t), &u->hardware_volume));
- pa_log_debug("Calculated software volume: %s", pa_cvolume_snprint(t, sizeof(t), &s->soft_volume));
+ pa_log_debug("Calculated software volume: %s (accurate-enough=%s)", pa_cvolume_snprint(t, sizeof(t), &new_soft_volume),
+ pa_yes_no(accurate_enough));
+
+ if (!accurate_enough)
+ s->soft_volume = new_soft_volume;
} else {
pa_log_debug("Wrote hardware volume: %s", pa_cvolume_snprint(t, sizeof(t), &r));
@@ -1008,7 +1134,7 @@ static void source_set_volume_cb(pa_source *s) {
/* We can't match exactly what the user requested, hence let's
* at least tell the user about it */
- s->virtual_volume = r;
+ s->volume = r;
}
}
@@ -1107,11 +1233,12 @@ static void thread_func(void *userdata) {
if (PA_SOURCE_IS_OPENED(u->source->thread_info.state)) {
int work_done;
pa_usec_t sleep_usec = 0;
+ pa_bool_t on_timeout = pa_rtpoll_timer_elapsed(u->rtpoll);
if (u->use_mmap)
- work_done = mmap_read(u, &sleep_usec, revents & POLLIN);
+ work_done = mmap_read(u, &sleep_usec, revents & POLLIN, on_timeout);
else
- work_done = unix_read(u, &sleep_usec, revents & POLLIN);
+ work_done = unix_read(u, &sleep_usec, revents & POLLIN, on_timeout);
if (work_done < 0)
goto fail;
@@ -1358,8 +1485,8 @@ pa_source *pa_alsa_source_new(pa_module *m, pa_modargs *ma, const char*driver, p
const char *dev_id = NULL;
pa_sample_spec ss, requested_ss;
pa_channel_map map;
- uint32_t nfrags, hwbuf_size, frag_size, tsched_size, tsched_watermark;
- snd_pcm_uframes_t period_frames, tsched_frames;
+ uint32_t nfrags, frag_size, buffer_size, tsched_size, tsched_watermark;
+ snd_pcm_uframes_t period_frames, buffer_frames, tsched_frames;
size_t frame_size;
pa_bool_t use_mmap = TRUE, b, use_tsched = TRUE, d, ignore_dB = FALSE;
pa_source_new_data data;
@@ -1393,8 +1520,10 @@ pa_source *pa_alsa_source_new(pa_module *m, pa_modargs *ma, const char*driver, p
goto fail;
}
- hwbuf_size = frag_size * nfrags;
+ buffer_size = nfrags * frag_size;
+
period_frames = frag_size/frame_size;
+ buffer_frames = buffer_size/frame_size;
tsched_frames = tsched_size/frame_size;
if (pa_modargs_get_value_boolean(ma, "mmap", &use_mmap) < 0) {
@@ -1433,6 +1562,7 @@ pa_source *pa_alsa_source_new(pa_module *m, pa_modargs *ma, const char*driver, p
5,
pa_rtclock_now(),
FALSE);
+ u->smoother_interval = SMOOTHER_MIN_INTERVAL;
dev_id = pa_modargs_get_value(
ma, "device_id",
@@ -1459,7 +1589,7 @@ pa_source *pa_alsa_source_new(pa_module *m, pa_modargs *ma, const char*driver, p
&u->device_name,
&ss, &map,
SND_PCM_STREAM_CAPTURE,
- &nfrags, &period_frames, tsched_frames,
+ &period_frames, &buffer_frames, tsched_frames,
&b, &d, mapping)))
goto fail;
@@ -1473,7 +1603,7 @@ pa_source *pa_alsa_source_new(pa_module *m, pa_modargs *ma, const char*driver, p
&u->device_name,
&ss, &map,
SND_PCM_STREAM_CAPTURE,
- &nfrags, &period_frames, tsched_frames,
+ &period_frames, &buffer_frames, tsched_frames,
&b, &d, profile_set, &mapping)))
goto fail;
@@ -1484,7 +1614,7 @@ pa_source *pa_alsa_source_new(pa_module *m, pa_modargs *ma, const char*driver, p
&u->device_name,
&ss, &map,
SND_PCM_STREAM_CAPTURE,
- &nfrags, &period_frames, tsched_frames,
+ &period_frames, &buffer_frames, tsched_frames,
&b, &d, FALSE)))
goto fail;
}
@@ -1510,11 +1640,6 @@ pa_source *pa_alsa_source_new(pa_module *m, pa_modargs *ma, const char*driver, p
u->use_tsched = use_tsched = FALSE;
}
- if (use_tsched && !pa_alsa_pcm_is_hw(u->pcm_handle)) {
- pa_log_info("Device is not a hardware device, disabling timer-based scheduling.");
- u->use_tsched = use_tsched = FALSE;
- }
-
if (u->use_mmap)
pa_log_info("Successfully enabled mmap() mode.");
@@ -1536,7 +1661,7 @@ pa_source *pa_alsa_source_new(pa_module *m, pa_modargs *ma, const char*driver, p
pa_alsa_init_proplist_pcm(m->core, data.proplist, u->pcm_handle);
pa_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, u->device_name);
- pa_proplist_setf(data.proplist, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE, "%lu", (unsigned long) (period_frames * frame_size * nfrags));
+ pa_proplist_setf(data.proplist, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE, "%lu", (unsigned long) (buffer_frames * frame_size));
pa_proplist_setf(data.proplist, PA_PROP_DEVICE_BUFFERING_FRAGMENT_SIZE, "%lu", (unsigned long) (period_frames * frame_size));
pa_proplist_sets(data.proplist, PA_PROP_DEVICE_ACCESS_MODE, u->use_tsched ? "mmap+timer" : (u->use_mmap ? "mmap" : "serial"));
@@ -1577,18 +1702,25 @@ pa_source *pa_alsa_source_new(pa_module *m, pa_modargs *ma, const char*driver, p
pa_source_set_rtpoll(u->source, u->rtpoll);
u->frame_size = frame_size;
- u->fragment_size = frag_size = (uint32_t) (period_frames * frame_size);
- u->nfragments = nfrags;
- u->hwbuf_size = u->fragment_size * nfrags;
- u->tsched_watermark = pa_usec_to_bytes_round_up(pa_bytes_to_usec_round_up(tsched_watermark, &requested_ss), &u->source->sample_spec);
+ u->fragment_size = frag_size = (size_t) (period_frames * frame_size);
+ u->hwbuf_size = buffer_size = (size_t) (buffer_frames * frame_size);
pa_cvolume_mute(&u->hardware_volume, u->source->sample_spec.channels);
- pa_log_info("Using %u fragments of size %lu bytes, buffer time is %0.2fms",
- nfrags, (long unsigned) u->fragment_size,
+ pa_log_info("Using %0.1f fragments of size %lu bytes (%0.2fms), buffer size is %lu bytes (%0.2fms)",
+ (double) u->hwbuf_size / (double) u->fragment_size,
+ (long unsigned) u->fragment_size,
+ (double) pa_bytes_to_usec(u->fragment_size, &ss) / PA_USEC_PER_MSEC,
+ (long unsigned) u->hwbuf_size,
(double) pa_bytes_to_usec(u->hwbuf_size, &ss) / PA_USEC_PER_MSEC);
if (u->use_tsched) {
- u->watermark_step = pa_usec_to_bytes(TSCHED_WATERMARK_STEP_USEC, &u->source->sample_spec);
+ u->tsched_watermark = pa_usec_to_bytes_round_up(pa_bytes_to_usec_round_up(tsched_watermark, &requested_ss), &u->source->sample_spec);
+
+ u->watermark_inc_step = pa_usec_to_bytes(TSCHED_WATERMARK_INC_STEP_USEC, &u->source->sample_spec);
+ u->watermark_dec_step = pa_usec_to_bytes(TSCHED_WATERMARK_DEC_STEP_USEC, &u->source->sample_spec);
+
+ u->watermark_inc_threshold = pa_usec_to_bytes_round_up(TSCHED_WATERMARK_INC_THRESHOLD_USEC, &u->source->sample_spec);
+ u->watermark_dec_threshold = pa_usec_to_bytes_round_up(TSCHED_WATERMARK_DEC_THRESHOLD_USEC, &u->source->sample_spec);
fix_min_sleep_wakeup(u);
fix_tsched_watermark(u);
generated by cgit (git 2.34.1) at 2025-10-31 21:33:45 +0000