This fixes a "multiple definition" compiler error on
gcc10 which defaults to -fno-common.

https://gcc.gnu.org/gcc-10/porting_to.html#common

Fixes #503

Signed-off-by: U. Artie Eoff <[email protected]>

This fixes a gcc10 compiler error for the
VA_STATUS_ERROR_UNKNOWN 0xFFFFFFFF conversion from
unsigned int to int.

Signed-off-by: U. Artie Eoff <[email protected]>

The current implementation of the CQP mode encode has a
compressed buffer size restriction of 4Kb. The restriction
doesn't make sense for low-resolution & low-bitrate
video encoding use cases since inter-frames can be encoded
with much less number of bytes.

For eg: most of the P-frames in a video-conferencing session
of 640x480 resolution at 750kbps require only 1Kb bitrate
allocation and currently the hardware PAK unit fill the rest
of the 3Kb (4Kb-1Kb) with zeros. This will jeopardize the
quality & bit-rate allocation of the hybrid CBR encode
models[1] where we run the bitrate control algorithm in
software clubbed with a CQP hardware encoder:
[1]: https://cgit.freedesktop.org/~sree/gstreamer-vaapi/commit/?h=VP9_SVC_and_SoftwareBRC&id=355f16bdb32965425b274aa082c1334b0edd5992).

It is a maintenance release, see "NEWS" for details

Signed-off-by: Haihao Xiang <[email protected]>