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-rw-r--r--src/modules/alsa/alsa-source.c134
1 files changed, 127 insertions, 7 deletions
diff --git a/src/modules/alsa/alsa-source.c b/src/modules/alsa/alsa-source.c
index fbc21f74..39df4a91 100644
--- a/src/modules/alsa/alsa-source.c
+++ b/src/modules/alsa/alsa-source.c
@@ -54,6 +54,8 @@
#include <pulsecore/time-smoother.h>
#include <pulsecore/rtclock.h>
+#include <modules/reserve-wrap.h>
+
#include "alsa-util.h"
#include "alsa-source.h"
@@ -99,10 +101,75 @@ struct userdata {
pa_smoother *smoother;
uint64_t read_count;
+
+ pa_reserve_wrapper *reserve;
+ pa_hook_slot *reserve_slot;
};
static void userdata_free(struct userdata *u);
+static pa_hook_result_t reserve_cb(pa_reserve_wrapper *r, void *forced, struct userdata *u) {
+ pa_assert(r);
+ pa_assert(u);
+
+ if (pa_source_suspend(u->source, TRUE) < 0)
+ return PA_HOOK_CANCEL;
+
+ return PA_HOOK_OK;
+}
+
+static void reserve_done(struct userdata *u) {
+ pa_assert(u);
+
+ if (u->reserve_slot) {
+ pa_hook_slot_free(u->reserve_slot);
+ u->reserve_slot = NULL;
+ }
+
+ if (u->reserve) {
+ pa_reserve_wrapper_unref(u->reserve);
+ u->reserve = NULL;
+ }
+}
+
+static void reserve_update(struct userdata *u) {
+ const char *description;
+ pa_assert(u);
+
+ if (!u->source)
+ return;
+
+ if ((description = pa_proplist_gets(u->source->proplist, PA_PROP_DEVICE_DESCRIPTION)))
+ pa_reserve_wrapper_set_application_device_name(u->reserve, description);
+}
+
+static int reserve_init(struct userdata *u, const char *dname) {
+ char *rname;
+
+ pa_assert(u);
+ pa_assert(dname);
+
+ if (u->reserve)
+ return 0;
+
+ /* We are resuming, try to lock the device */
+ if (!(rname = pa_alsa_get_reserve_name(dname)))
+ return 0;
+
+ u->reserve = pa_reserve_wrapper_get(u->core, rname);
+ pa_xfree(rname);
+
+ if (!(u->reserve))
+ return -1;
+
+ reserve_update(u);
+
+ pa_assert(!u->reserve_slot);
+ u->reserve_slot = pa_hook_connect(pa_reserve_wrapper_hook(u->reserve), PA_HOOK_NORMAL, (pa_hook_cb_t) reserve_cb, u);
+
+ return 0;
+}
+
static void fix_min_sleep_wakeup(struct userdata *u) {
size_t max_use, max_use_2;
pa_assert(u);
@@ -248,6 +315,7 @@ static int mmap_read(struct userdata *u, pa_usec_t *sleep_usec, pa_bool_t polled
pa_bool_t work_done = FALSE;
pa_usec_t max_sleep_usec = 0, process_usec = 0;
size_t left_to_record;
+ unsigned j = 0;
pa_assert(u);
pa_source_assert_ref(u->source);
@@ -289,9 +357,12 @@ static int mmap_read(struct userdata *u, pa_usec_t *sleep_usec, pa_bool_t polled
if (polled)
PA_ONCE_BEGIN {
- pa_log(_("ALSA woke us up to read new data from the device, but there was actually nothing to read! "
- "Most likely this is an ALSA driver bug. Please report this issue to the ALSA developers. "
- "We were woken up with POLLIN set -- however a subsequent snd_pcm_avail_update() returned 0."));
+ char *dn = pa_alsa_get_driver_name_by_pcm(u->pcm_handle);
+ pa_log(_("ALSA woke us up to read new data from the device, but there was actually nothing to read!\n"
+ "Most likely this is a bug in the ALSA driver '%s'. Please report this issue to the ALSA developers.\n"
+ "We were woken up with POLLIN set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail."),
+ pa_strnull(dn));
+ pa_xfree(dn);
} PA_ONCE_END;
#ifdef DEBUG_TIMING
@@ -300,6 +371,14 @@ static int mmap_read(struct userdata *u, pa_usec_t *sleep_usec, pa_bool_t polled
break;
}
+ if (++j > 10) {
+#ifdef DEBUG_TIMING
+ pa_log_debug("Not filling up, because already too many iterations.");
+#endif
+
+ break;
+ }
+
polled = FALSE;
#ifdef DEBUG_TIMING
@@ -378,6 +457,7 @@ static int unix_read(struct userdata *u, pa_usec_t *sleep_usec, pa_bool_t polled
int work_done = FALSE;
pa_usec_t max_sleep_usec = 0, process_usec = 0;
size_t left_to_record;
+ unsigned j = 0;
pa_assert(u);
pa_source_assert_ref(u->source);
@@ -410,14 +490,25 @@ static int unix_read(struct userdata *u, pa_usec_t *sleep_usec, pa_bool_t polled
if (polled)
PA_ONCE_BEGIN {
- pa_log(_("ALSA woke us up to read new data from the device, but there was actually nothing to read! "
- "Most likely this is an ALSA driver bug. Please report this issue to the ALSA developers. "
- "We were woken up with POLLIN set -- however a subsequent snd_pcm_avail_update() returned 0."));
+ char *dn = pa_alsa_get_driver_name_by_pcm(u->pcm_handle);
+ pa_log(_("ALSA woke us up to read new data from the device, but there was actually nothing to read!\n"
+ "Most likely this is a bug in the ALSA driver '%s'. Please report this issue to the ALSA developers.\n"
+ "We were woken up with POLLIN set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail."),
+ pa_strnull(dn));
+ pa_xfree(dn);
} PA_ONCE_END;
break;
}
+ if (++j > 10) {
+#ifdef DEBUG_TIMING
+ pa_log_debug("Not filling up, because already too many iterations.");
+#endif
+
+ break;
+ }
+
polled = FALSE;
for (;;) {
@@ -486,7 +577,7 @@ static void update_smoother(struct userdata *u) {
/* Let's update the time smoother */
- if (PA_UNLIKELY((err = snd_pcm_delay(u->pcm_handle, &delay)) < 0)) {
+ if (PA_UNLIKELY((err = pa_alsa_safe_delay(u->pcm_handle, &delay, u->hwbuf_size, &u->source->sample_spec)) < 0)) {
pa_log_warn("Failed to get delay: %s", snd_strerror(err));
return;
}
@@ -741,6 +832,25 @@ static int source_process_msg(pa_msgobject *o, int code, void *data, int64_t off
return pa_source_process_msg(o, code, data, offset, chunk);
}
+/* Called from main context */
+static int source_set_state_cb(pa_source *s, pa_source_state_t new_state) {
+ pa_source_state_t old_state;
+ struct userdata *u;
+
+ pa_source_assert_ref(s);
+ pa_assert_se(u = s->userdata);
+
+ old_state = pa_source_get_state(u->source);
+
+ if (PA_SINK_IS_OPENED(old_state) && new_state == PA_SINK_SUSPENDED)
+ 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 0;
+}
+
static int mixer_callback(snd_mixer_elem_t *elem, unsigned int mask) {
struct userdata *u = snd_mixer_elem_get_callback_private(elem);
@@ -1292,6 +1402,11 @@ pa_source *pa_alsa_source_new(pa_module *m, pa_modargs *ma, const char*driver, p
u->smoother = pa_smoother_new(DEFAULT_TSCHED_WATERMARK_USEC*2, DEFAULT_TSCHED_WATERMARK_USEC*2, TRUE, 5);
pa_smoother_set_time_offset(u->smoother, pa_rtclock_usec());
+ if (reserve_init(u, pa_modargs_get_value(
+ ma, "device_id",
+ pa_modargs_get_value(ma, "device", DEFAULT_DEVICE))) < 0)
+ goto fail;
+
b = use_mmap;
d = use_tsched;
@@ -1390,6 +1505,7 @@ pa_source *pa_alsa_source_new(pa_module *m, pa_modargs *ma, const char*driver, p
u->source->parent.process_msg = source_process_msg;
u->source->update_requested_latency = source_update_requested_latency_cb;
+ u->source->set_state = source_set_state_cb;
u->source->userdata = u;
pa_source_set_asyncmsgq(u->source, u->thread_mq.inq);
@@ -1419,6 +1535,8 @@ pa_source *pa_alsa_source_new(pa_module *m, pa_modargs *ma, const char*driver, p
pa_log_info("Time scheduling watermark is %0.2fms",
(double) pa_bytes_to_usec(u->tsched_watermark, &ss) / PA_USEC_PER_MSEC);
+ reserve_update(u);
+
if (update_sw_params(u) < 0)
goto fail;
@@ -1495,6 +1613,8 @@ static void userdata_free(struct userdata *u) {
if (u->smoother)
pa_smoother_free(u->smoother);
+ reserve_done(u);
+
pa_xfree(u->device_name);
pa_xfree(u);
}
generated by cgit (git 2.34.1) at 2024-11-12 13:26:40 +0000