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authorLennart Poettering <lennart@poettering.net>2009-08-15 00:48:14 +0200
committerLennart Poettering <lennart@poettering.net>2009-08-15 00:48:14 +0200
commit350a2bc846559bb274ba70f928bb42a9472050bf (patch)
treeaa3e4690bed11fdc01bfde994d45025ce7e05d06 /src/pulsecore/source.c
parent4eb59fb90e474a81f2d626bc4fc7db083fafed7a (diff)
core: make fixed latency dynamically changeable
This of course makes the name 'fixed' a bit of a misnomer. However the definitions are now like this: fixed latency: the latency may change during runtime, but is solely controlled by the backend, the client has no influence. dynamic latency: the latency may change during runtime, influenced by the requests of the clients. i.e. fixed vs. dynamic is from the perspective of the client.
Diffstat (limited to 'src/pulsecore/source.c')
-rw-r--r--src/pulsecore/source.c101
1 files changed, 83 insertions, 18 deletions
diff --git a/src/pulsecore/source.c b/src/pulsecore/source.c
index 028d6795..8970d8e4 100644
--- a/src/pulsecore/source.c
+++ b/src/pulsecore/source.c
@@ -226,8 +226,6 @@ pa_source* pa_source_new(
s->muted = data->muted;
s->refresh_volume = s->refresh_muted = FALSE;
- s->fixed_latency = flags & PA_SOURCE_DYNAMIC_LATENCY ? 0 : DEFAULT_FIXED_LATENCY;
-
reset_callbacks(s);
s->userdata = NULL;
@@ -274,6 +272,7 @@ pa_source* pa_source_new(
s->thread_info.requested_latency = 0;
s->thread_info.min_latency = ABSOLUTE_MIN_LATENCY;
s->thread_info.max_latency = ABSOLUTE_MAX_LATENCY;
+ s->thread_info.fixed_latency = flags & PA_SOURCE_DYNAMIC_LATENCY ? 0 : DEFAULT_FIXED_LATENCY;
pa_assert_se(pa_idxset_put(core->sources, s, &s->index) >= 0);
@@ -370,7 +369,7 @@ void pa_source_put(pa_source *s) {
pa_assert((s->flags & PA_SOURCE_HW_VOLUME_CTRL) || (s->base_volume == PA_VOLUME_NORM && s->flags & PA_SOURCE_DECIBEL_VOLUME));
pa_assert(!(s->flags & PA_SOURCE_DECIBEL_VOLUME) || s->n_volume_steps == PA_VOLUME_NORM+1);
- pa_assert(!(s->flags & PA_SOURCE_DYNAMIC_LATENCY) == (s->fixed_latency != 0));
+ pa_assert(!(s->flags & PA_SOURCE_DYNAMIC_LATENCY) == (s->thread_info.fixed_latency != 0));
pa_assert_se(source_set_state(s, PA_SOURCE_IDLE) == 0);
@@ -1037,7 +1036,7 @@ int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_
if (pa_hashmap_remove(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index)))
pa_source_output_unref(o);
- pa_source_invalidate_requested_latency(s);
+ pa_source_invalidate_requested_latency(s, TRUE);
return 0;
}
@@ -1117,6 +1116,16 @@ int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_
return 0;
}
+ case PA_SOURCE_MESSAGE_GET_FIXED_LATENCY:
+
+ *((pa_usec_t*) userdata) = s->thread_info.fixed_latency;
+ return 0;
+
+ case PA_SOURCE_MESSAGE_SET_FIXED_LATENCY:
+
+ pa_source_set_fixed_latency_within_thread(s, (pa_usec_t) offset);
+ return 0;
+
case PA_SOURCE_MESSAGE_GET_MAX_REWIND:
*((size_t*) userdata) = s->thread_info.max_rewind;
@@ -1223,13 +1232,12 @@ pa_usec_t pa_source_get_requested_latency_within_thread(pa_source *s) {
pa_source_assert_io_context(s);
if (!(s->flags & PA_SOURCE_DYNAMIC_LATENCY))
- return PA_CLAMP(s->fixed_latency, s->thread_info.min_latency, s->thread_info.max_latency);
+ return PA_CLAMP(s->thread_info.fixed_latency, s->thread_info.min_latency, s->thread_info.max_latency);
if (s->thread_info.requested_latency_valid)
return s->thread_info.requested_latency;
- while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
-
+ PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
if (o->thread_info.requested_source_latency != (pa_usec_t) -1 &&
(result == (pa_usec_t) -1 || result > o->thread_info.requested_source_latency))
result = o->thread_info.requested_source_latency;
@@ -1292,18 +1300,18 @@ void pa_source_set_max_rewind(pa_source *s, size_t max_rewind) {
}
/* Called from IO thread */
-void pa_source_invalidate_requested_latency(pa_source *s) {
+void pa_source_invalidate_requested_latency(pa_source *s, pa_bool_t dynamic) {
pa_source_output *o;
void *state = NULL;
pa_source_assert_ref(s);
pa_source_assert_io_context(s);
- if (!(s->flags & PA_SOURCE_DYNAMIC_LATENCY))
+ if ((s->flags & PA_SOURCE_DYNAMIC_LATENCY))
+ s->thread_info.requested_latency_valid = FALSE;
+ else if (dynamic)
return;
- s->thread_info.requested_latency_valid = FALSE;
-
if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
if (s->update_requested_latency)
@@ -1315,7 +1323,7 @@ void pa_source_invalidate_requested_latency(pa_source *s) {
}
if (s->monitor_of)
- pa_sink_invalidate_requested_latency(s->monitor_of);
+ pa_sink_invalidate_requested_latency(s->monitor_of, dynamic);
}
/* Called from main thread */
@@ -1375,8 +1383,6 @@ void pa_source_get_latency_range(pa_source *s, pa_usec_t *min_latency, pa_usec_t
/* Called from IO thread, and from main thread before pa_source_put() is called */
void pa_source_set_latency_range_within_thread(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
- void *state = NULL;
-
pa_source_assert_ref(s);
pa_source_assert_io_context(s);
@@ -1390,18 +1396,23 @@ void pa_source_set_latency_range_within_thread(pa_source *s, pa_usec_t min_laten
(s->flags & PA_SOURCE_DYNAMIC_LATENCY) ||
s->monitor_of);
+ if (s->thread_info.min_latency == min_latency &&
+ s->thread_info.max_latency == max_latency)
+ return;
+
s->thread_info.min_latency = min_latency;
s->thread_info.max_latency = max_latency;
if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
pa_source_output *o;
+ void *state = NULL;
- while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
+ PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
if (o->update_source_latency_range)
o->update_source_latency_range(o);
}
- pa_source_invalidate_requested_latency(s);
+ pa_source_invalidate_requested_latency(s, FALSE);
}
/* Called from main thread, before the source is put */
@@ -1409,7 +1420,10 @@ void pa_source_set_fixed_latency(pa_source *s, pa_usec_t latency) {
pa_source_assert_ref(s);
pa_assert_ctl_context();
- pa_assert(pa_source_get_state(s) == PA_SOURCE_INIT);
+ if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
+ pa_assert(latency == 0);
+ return;
+ }
if (latency < ABSOLUTE_MIN_LATENCY)
latency = ABSOLUTE_MIN_LATENCY;
@@ -1417,7 +1431,58 @@ void pa_source_set_fixed_latency(pa_source *s, pa_usec_t latency) {
if (latency > ABSOLUTE_MAX_LATENCY)
latency = ABSOLUTE_MAX_LATENCY;
- s->fixed_latency = latency;
+ if (PA_SOURCE_IS_LINKED(s->state))
+ pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_FIXED_LATENCY, NULL, (int64_t) latency, NULL) == 0);
+ else
+ s->thread_info.fixed_latency = latency;
+}
+
+/* Called from main thread */
+pa_usec_t pa_source_get_fixed_latency(pa_source *s) {
+ pa_usec_t latency;
+
+ pa_source_assert_ref(s);
+ pa_assert_ctl_context();
+
+ if (s->flags & PA_SOURCE_DYNAMIC_LATENCY)
+ return 0;
+
+ if (PA_SOURCE_IS_LINKED(s->state))
+ pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_FIXED_LATENCY, &latency, 0, NULL) == 0);
+ else
+ latency = s->thread_info.fixed_latency;
+
+ return latency;
+}
+
+/* Called from IO thread */
+void pa_source_set_fixed_latency_within_thread(pa_source *s, pa_usec_t latency) {
+ pa_source_assert_ref(s);
+ pa_source_assert_io_context(s);
+
+ if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
+ pa_assert(latency == 0);
+ return;
+ }
+
+ pa_assert(latency >= ABSOLUTE_MIN_LATENCY);
+ pa_assert(latency <= ABSOLUTE_MAX_LATENCY);
+
+ if (s->thread_info.fixed_latency == latency)
+ return;
+
+ s->thread_info.fixed_latency = latency;
+
+ if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
+ pa_source_output *o;
+ void *state = NULL;
+
+ PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
+ if (o->update_source_fixed_latency)
+ o->update_source_fixed_latency(o);
+ }
+
+ pa_source_invalidate_requested_latency(s, FALSE);
}
/* Called from main thread */