Doxygen tags in libva.

Updated the doxygen tags in libva for generating
doxygen based documentation.

Signed-off-by: Sameer Kibey <sameer.kibey@intel.com>
Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>
Added HEVC decode API

Signed-off-by: Jonathan Bian <jonathan.bian@intel.com>
Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>
VPP: Add STDE(Skin tone detection and enhancement) test case.

In this commit, I added a testcase for VPP-STDE feature.
I also made relevant changes to the methods and the config file.
Add the new YV16 fourcc code

Some input sources require YV16, which is described as the following:
Planar YUV4:2:2; 8 bit Y plane, followed by 8 bit 2x1 subsampled
V and U planes.

V1->V2: Follow Gwenole and Haihao to update the comment

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Bind the default verion of vaCreateSurfaces() to the node VA_API_0.33.0

Currently the default version of vaCreateSurfaces() in master branch is
bound to VA_API_0.33.0, however the same function in staging branch is
bound to VA_API_0.34.0. To sync the two branches, bind the default version
of vaCreateSurfaces() to the node VA_API_0.33.0 in staging branch

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>
VP9 decode API

Signed-off-by: Wang, Ce <ce.wang@intel.com>
Signed-off-by: Jonathan Bian <jonathan.bian@intel.com>