event: Add out annotations
event: Add out annotations

https://bugzilla.gnome.org/show_bug.cgi?id=621773

lovebug356/gstreamer,surround-io/gstreamer,jpakkane/gstreamer,ylatuya/gstreamer,centricular/gstreamer,jpakkane/gstreamer,drothlis/gstreamer,ahmedammar/platform_external_gst_gstreamer,cfoch/gstreamer,Lachann/gstreamer,shelsonjava/gstreamer,krieger-od/gstreamer,mparis/gstreamer,magcius/gstreamer,StreamUtils/gstreamer,lubosz/gstreamer,drothlis/gstreamer,mparis/gstreamer,lovebug356/gstreamer,jpakkane/gstreamer,lovebug356/gstreamer,mparis/gstreamer,StreamUtils/gstreamer,cfoch/gstreamer,krichter722/gstreamer,ylatuya/gstreamer,krieger-od/gstreamer,magcius/gstreamer,cfoch/gstreamer,Lachann/gstreamer,drothlis/gstreamer,shelsonjava/gstreamer,collects/gstreamer,collects/gstreamer,Lachann/gstreamer,surround-io/gstreamer,cablelabs/gstreamer,cablelabs/gstreamer,ensonic/gstreamer,justinjoy/gstreamer,jpxiong/gstreamer,drothlis/gstreamer,ylatuya/gstreamer,StreamUtils/gstreamer,jpxiong/gstreamer,ensonic/gstreamer,centricular/gstreamer,krieger-od/gstreamer,krichter722/gstreamer,ensonic/gstreamer,shelsonjava/gstreamer,justinjoy/gstreamer,drothlis/gstreamer,cfoch/gstreamer,mrchapp/gstreamer,magcius/gstreamer,shelsonjava/gstreamer,cablelabs/gstreamer,Distrotech/gstreamer,collects/gstreamer,Lachann/gstreamer,lubosz/gstreamer,mrchapp/gstreamer,ahmedammar/platform_external_gst_gstreamer,mrchapp/gstreamer,justinjoy/gstreamer,krichter722/gstreamer,lubosz/gstreamer,mparis/gstreamer,centricular/gstreamer,cablelabs/gstreamer,centricular/gstreamer,shelsonjava/gstreamer,ahmedammar/platform_external_gst_gstreamer,ahmedammar/platform_external_gst_gstreamer,Distrotech/gstreamer,Distrotech/gstreamer,collects/gstreamer,Distrotech/gstreamer,centricular/gstreamer,surround-io/gstreamer,StreamUtils/gstreamer,surround-io/gstreamer,Lachann/gstreamer,cablelabs/gstreamer,ahmedammar/platform_external_gst_gstreamer,krieger-od/gstreamer,mrchapp/gstreamer,ylatuya/gstreamer,jpxiong/gstreamer,lubosz/gstreamer,mrchapp/gstreamer,krichter722/gstreamer,magcius/gstreamer,surround-io/gstreamer,collects/gstreamer,ensonic/gstreamer,justinjoy/gstreamer,ensonic/gstreamer,lovebug356/gstreamer,krichter722/gstreamer,Distrotech/gstreamer,jpakkane/gstreamer,jpxiong/gstreamer,jpakkane/gstreamer,lovebug356/gstreamer,justinjoy/gstreamer,ylatuya/gstreamer,mparis/gstreamer,jpxiong/gstreamer,StreamUtils/gstreamer,lubosz/gstreamer,cfoch/gstreamer,krieger-od/gstreamer,magcius/gstreamer