mmal/codec: Rename mmal-zerocopy option to mmal-opaque
mmal/codec: Rename mmal-zerocopy option to mmal-opaque

The option named mmal-zerocopy until now is used to configure the codec to
generate pictures with MMAL_ENCODING_OPAQUE which in fact is a fake payload
format that just contains handles for pictures allocated on the GPU side.
While this in effect causes a zerocopy mode of pixel data the naming is
potentially misleading because mmal supports another mode called zero_copy. In
this mode the GPU and CPU use shared buffers via the vc_sm kernel module, so
that the buffer data is actually accessible from userspace but no copies are
required when transferring from or to mmal components.

Signed-off-by: Julian Scheel <354106e416911844661e1603d99ecf7d1c318dda@jusst.de>
Signed-off-by: Jean-Baptiste Kempf <7b85a41a628204b76aba4326273a3ccc74bd009a@videolan.org>

vlc-mirror/vlc,krichter722/vlc,vlc-mirror/vlc,shyamalschandra/vlc,vlc-mirror/vlc,shyamalschandra/vlc,vlc-mirror/vlc,xkfz007/vlc,krichter722/vlc,krichter722/vlc,shyamalschandra/vlc,shyamalschandra/vlc,xkfz007/vlc,vlc-mirror/vlc,xkfz007/vlc,shyamalschandra/vlc,xkfz007/vlc,shyamalschandra/vlc,xkfz007/vlc,shyamalschandra/vlc,xkfz007/vlc,krichter722/vlc,xkfz007/vlc,krichter722/vlc,krichter722/vlc,krichter722/vlc,vlc-mirror/vlc,vlc-mirror/vlc