vo: avoid burning CPU when paused

Some code always calls vo_event(), even with event==0, which leads to
immediate wakeup, which in turn causes the function to be called again.
This would burn CPU, which was especially noticeable when paused.

(cherry picked from commit 0bdef9979f74db33d1c84ee788c45f5e1d8e0d0d)

1 files changed, 2 insertions, 0 deletions

diff --git a/video/out/vo.c b/video/out/vo.c
index 9f6e44a744..3e19006862 100644
--- a/video/out/vo.c
+++ b/video/out/vo.c
@@ -971,6 +971,8 @@ void vo_event(struct vo *vo, int event)
     pthread_mutex_lock(&in->lock);
     if ((in->queued_events & event & VO_EVENTS_USER) != (event & VO_EVENTS_USER))
         mp_input_wakeup(vo->input_ctx);
+    if (event)
+        wakeup_locked(vo);
     in->queued_events |= event;
     in->internal_events |= event;
     pthread_mutex_unlock(&in->lock);