Different capture buffer format has different buffer size, need to get
real buffer size according to buffer type from scp.
Signed-off-by: NYunfei Dong <yunfei.dong@mediatek.com>
Tested-by: NNícolas F. R. A. Prado <nfraprado@collabora.com>
Signed-off-by: NHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@kernel.org>