command: make window-scale property observable

Add a generic mechanism to the VO to relay "extra" events from VO to
player. Use it to notify the core of window resizes, which in turn will
be used to mark all affected properties ("window-scale" in this case) as
changed.

(I refrained from hacking this as internal command into input_ctx, or to
poll the state change, etc. - but in the end, maybe it would be best to
actually pass the client API context directly to the places where events
can happen.)

1 files changed, 1 insertions, 0 deletions

diff --git a/video/out/vo_sdl.c b/video/out/vo_sdl.c
index c904793ca0..822b5009aa 100644
--- a/video/out/vo_sdl.c
+++ b/video/out/vo_sdl.c
@@ -561,6 +561,7 @@ static int wait_events(struct vo *vo, int64_t until_time_us)
                 break;
             case SDL_WINDOWEVENT_SIZE_CHANGED:
                 check_resize(vo);
+                vo_event(vo, VO_EVENT_RESIZE);
                 break;
             }
             break;