19:42 <Schrostfutz> Hi! I own a S905 board and have been trying to understand the video ecosystem, currently I'm quite lost. I want to write code for hardware video decoding but have trouble finding documentation. In my os there are plenty of `/dev/am*` devices that the aml-libs my vendor ships seem to interact with, but this is sparingly documented, and I was unable to find sources for the library and the kernel driver(s) (amvdec*)

19:42 <Schrostfutz> that create those. Meson seems to be unrelated, an open-source way to interact with the hardware via the v4l2 interface. Am I understanding that correctly?

21:07 <xdarklight> Schrostfutz: it sounds like you're running a vendor kernel. mainline Linux has this driver which uses the v4l2 (memory-to-memory) interface: https://github.com/torvalds/linux/tree/master/drivers/staging/media/meson/vdec

21:08 <xdarklight> Schrostfutz: there's some caveats with that driver though (I can't recall the exact problems) so don't expect it to be perfect

21:24 <Schrostfutz> xdarklight: Thanks alot, that gives me some more idea what to look for. I'm trying to use the hardware video decoding for end-user applications so I was looking into implementing VA-API for the vendor interface, but I'll look into v4l2 more, this seems like the more treaded path.