split library by dec size limit

[amazingfate]

I want to maintain a ppa repo supporting more than one rockchip socs. But the decode size limit is defined in meson options at build time. So I build twice with two different meson config supporting 4k and 8k, and provide two different debs libv4l-rkmpp-4k and libv4l-rkmpp-8k.

Other small fixes: a, delete useless debian/libv4l-rkmpp1.* files b, add missing build depends meson, librga-dev, and librga2

[JeffyCN]

maybe we can just use 8k by default, guessing chromium would fallback to sw dec when mpp reports error

[amazingfate]

maybe we can just use 8k by default, guessing chromium would fallback to sw dec when mpp reports error

Tested on rk3568, when setting 8K dec size and playing 8K h265 video, chromium won't fallback to sw dec.

[JeffyCN]

sounds like an mpp issue, guessing a best way would be adding extra mpp api for this

[JeffyCN]

another possible way is to add a boot time service to create those virtual device node, and write configs based on the chip type, for example:

case "$(cat /proc/device-tree/compatible)" in
   *rk3588*)
       {
           echo "type=dec"
           echo "codecs=xxx"
           echo "max-width=xxx"
           echo "max-height=xxx"
       } > /dev/video-dec0
esac