[Bug 789847] msdkenc: Add support for YV12, YUY2, UYVY and BGRA

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=789847

--- Comment #25 from sreerenj <bsreerenj at gmail.com> ---
Ok, So I guess we will be having 2 vpp paths in msdk elements.
1: implicit conversions in decoders and encoder
2: explicit conversion with vpp element.


BTW, this reminds me of something I have noticed in gstremaer-vaapi + open
source  driver.
The open source driver does CSC internally for all non-nv12 formats (and also
for non-tiled nv12). But unfortunately, the code path of explicit vpp(which is
using optimized 3D sampler) and the vpp path used by the driver internally(avs
sampler) are different. Explicit vpp (vaapipostproc) seems to be more
performant than the internal conversion . This is visible if you run parallel
encode use cases.

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