collectpads: ensure all timestamps are in same time domain
collectpads: ensure all timestamps are in same time domain

... by not only processing incoming buffers through a clip function,
but also other timestamps such as those coming from GAP event.

justinjoy/gstreamer,krichter722/gstreamer,lovebug356/gstreamer,lubosz/gstreamer,surround-io/gstreamer,jpakkane/gstreamer,centricular/gstreamer,lubosz/gstreamer,surround-io/gstreamer,justinjoy/gstreamer,jpakkane/gstreamer,cablelabs/gstreamer,cfoch/gstreamer,mparis/gstreamer,lubosz/gstreamer,mparis/gstreamer,shelsonjava/gstreamer,krieger-od/gstreamer,jpxiong/gstreamer,collects/gstreamer,lovebug356/gstreamer,surround-io/gstreamer,ensonic/gstreamer,shelsonjava/gstreamer,jpxiong/gstreamer,surround-io/gstreamer,mparis/gstreamer,justinjoy/gstreamer,lovebug356/gstreamer,mparis/gstreamer,cfoch/gstreamer,mparis/gstreamer,krichter722/gstreamer,StreamUtils/gstreamer,krieger-od/gstreamer,Lachann/gstreamer,ensonic/gstreamer,centricular/gstreamer,StreamUtils/gstreamer,jpakkane/gstreamer,ensonic/gstreamer,krieger-od/gstreamer,surround-io/gstreamer,krieger-od/gstreamer,jpxiong/gstreamer,jpakkane/gstreamer,StreamUtils/gstreamer,ensonic/gstreamer,jpakkane/gstreamer,centricular/gstreamer,cfoch/gstreamer,krieger-od/gstreamer,cablelabs/gstreamer,jpxiong/gstreamer,cablelabs/gstreamer,collects/gstreamer,Lachann/gstreamer,krichter722/gstreamer,krichter722/gstreamer,ensonic/gstreamer,StreamUtils/gstreamer,justinjoy/gstreamer,shelsonjava/gstreamer,shelsonjava/gstreamer,jpxiong/gstreamer,StreamUtils/gstreamer,cfoch/gstreamer,lovebug356/gstreamer,justinjoy/gstreamer,cfoch/gstreamer,collects/gstreamer,shelsonjava/gstreamer,Lachann/gstreamer,lubosz/gstreamer,Lachann/gstreamer,Lachann/gstreamer,cablelabs/gstreamer,centricular/gstreamer,collects/gstreamer,collects/gstreamer,krichter722/gstreamer,centricular/gstreamer,lovebug356/gstreamer,cablelabs/gstreamer,lubosz/gstreamer