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sink,source: Handle missing in the shared volume case

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This makes sure that when we're traversing the device chain for sources
and sinks with shared volume, we handle the case that a sink-input or
source-output of one of these might be unlinked (while unloading a
module, for example).
This commit is contained in:
Arun Raghavan 2011-09-20 17:05:22 +05:30
parent fde703be75
commit cae3235369
6 changed files with 74 additions and 32 deletions
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43
src/pulsecore/source.c
View file

@ -549,10 +549,9 @@ void pa_source_put(pa_source *s) {
enable_flat_volume(s, TRUE);
if (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) {
pa_source *root_source = s->output_from_master->source;
pa_source *root_source = pa_source_get_master(s);
while (root_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)
root_source = root_source->output_from_master->source;
pa_assert(PA_LIKELY(root_source));
s->reference_volume = root_source->reference_volume;
pa_cvolume_remap(&s->reference_volume, &root_source->channel_map, &s->channel_map);
@ -963,10 +962,27 @@ pa_usec_t pa_source_get_latency_within_thread(pa_source *s) {
pa_bool_t pa_source_flat_volume_enabled(pa_source *s) {
pa_source_assert_ref(s);
while (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)
s = s->output_from_master->source;
s = pa_source_get_master(s);
return (s->flags & PA_SOURCE_FLAT_VOLUME);
if (PA_LIKELY(s))
return (s->flags & PA_SOURCE_FLAT_VOLUME);
else
return FALSE;
}
/* Called from the main thread (and also from the IO thread while the main
* thread is waiting). */
pa_source *pa_source_get_master(pa_source *s) {
pa_source_assert_ref(s);
while (s && (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
if (PA_UNLIKELY(!s->output_from_master))
return NULL;
s = s->output_from_master->source;
}
return s;
}
/* Called from main context */
@ -1380,7 +1396,7 @@ void pa_source_set_volume(
pa_bool_t save) {
pa_cvolume new_reference_volume;
pa_source *root_source = s;
pa_source *root_source;
pa_source_assert_ref(s);
pa_assert_ctl_context();
@ -1398,8 +1414,10 @@ void pa_source_set_volume(
/* In case of volume sharing, the volume is set for the root source first,
* from which it's then propagated to the sharing sources. */
while (root_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)
root_source = root_source->output_from_master->source;
root_source = pa_source_get_master(s);
if (PA_UNLIKELY(!root_source))
return;
/* As a special exception we accept mono volumes on all sources --
* even on those with more complex channel maps */
@ -1877,12 +1895,11 @@ int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_
}
case PA_SOURCE_MESSAGE_SET_SHARED_VOLUME: {
pa_source *root_source = s;
pa_source *root_source = pa_source_get_master(s);
while (root_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)
root_source = root_source->output_from_master->source;
if (PA_LIKELY(root_source))
set_shared_volume_within_thread(root_source);
set_shared_volume_within_thread(root_source);
return 0;
}