pad: add allocation query just because
pad: add allocation query just because

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