add pa_sink_used_by()/pa_source_used_by()

git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@1226 fefdeb5f-60dc-0310-8127-8f9354f1896f

1 files changed, 7 insertions, 0 deletions

diff --git a/src/pulsecore/source.c b/src/pulsecore/source.c
index 903de88b..ae72f040 100644
--- a/src/pulsecore/source.c
+++ b/src/pulsecore/source.c
@@ -333,3 +333,10 @@ void pa_source_set_description(pa_source *s, const char *description) {
 
     pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
 }
+
+unsigned pa_source_used_by(pa_source *s) {
+    assert(s);
+    assert(s->ref >= 1);
+
+    return pa_idxset_size(s->outputs);
+}