libv4l-rockchip_v2: Support extended controls about h264 coding tools

This enable handling following V4L2 extended controls that
improve h264 bitstream quality:
* V4L2_CID_MPEG_VIDEO_H264_I_PERIOD,
* V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE
* V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE
* V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM

BUG=b:187483451
TEST=video_encode_accelerator_tests

Change-Id: I8ec6654b8d033edd029e73ab8121a22cc0f587e3
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/libv4lplugins/+/2880330
Commit-Queue: Hirokazu Honda <hiroh@chromium.org>
Tested-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Tomasz Figa <tfiga@chromium.org>
3 files changed
tree: 0f5645682d61d3ae02e2828cae5352fa5a612266
  1. libv4l-rockchip/
  2. libv4l-rockchip_v2/
  3. OWNERS
  4. PRESUBMIT.cfg