capsfilter: only set caps when different
capsfilter: only set caps when different

When we have an input buffer with caps and when those caps are different from
the caps we want, only then make a writable copy of the input buffer as the
output buffer and set the caps on that output buffer. This avoids some cases
where we took a subbuffer for setting caps that were the same.

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