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libobs: Keep transition reference counter

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The reason to keep a reference counter for transitions is due to an
optimization I'm planning on when calculating transition volumes.  I'm
planning on walking the source tree to be able to calculate the current
base volume of a source, but *only* if there are transitions active,
because the only time that the volume can be anything other than 1.0
or 0.0 is when there are active transitions, which may change the base
volume of a source.
This commit is contained in:
jp9000 2014-12-27 21:42:03 -08:00
parent 6eab6ceff5
commit 10f8988667
2 changed files with 8 additions and 0 deletions
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2
libobs/obs-internal.h
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@ -198,6 +198,8 @@ struct obs_core_data {
struct obs_view main_view;
volatile long active_transitions;
long long unnamed_index;
volatile bool valid;

6
libobs/obs-source.c
View File

@ -189,6 +189,9 @@ obs_source_t *obs_source_create(enum obs_source_type type, const char *id,
blog(LOG_INFO, "source '%s' (%s) created", name, id);
obs_source_dosignal(source, "source_create", NULL);
if (info->type == OBS_SOURCE_TYPE_TRANSITION)
os_atomic_inc_long(&obs->data.active_transitions);
return source;
fail:
@ -223,6 +226,9 @@ void obs_source_destroy(struct obs_source *source)
if (!source)
return;
if (source->info.type == OBS_SOURCE_TYPE_TRANSITION)
os_atomic_dec_long(&obs->data.active_transitions);
obs_context_data_remove(&source->context);
blog(LOG_INFO, "source '%s' destroyed", source->context.name);