On Tue, 2 Jan 2024 at 10:03, Maxime Ripard <mripard@xxxxxxxxxx> wrote: > > Hi, > > On Wed, Dec 27, 2023 at 04:19:19PM +0100, AL13N wrote: > > I have a RPI4B with upstream kernel 6.1 64bit and there is no /dev/video10 > > present. I thought if I waited a bit more, it would appear in the kernel, > > but that was folly on my part. > > > > Currently, watching a movie is painful since the software decoding is way > > too slow and it has very low fps on 1080p (or even 720p or even 480p) > > > > IIRC, someone told me something else has to be fixed before the codecs can > > be done, but I don't remember what it was, or i didn't find it in my > > email/the archives. > > > > Can someone tell me what exactly needs to be done (in kernel) so that I can > > take a crack at it, (hopefully with some help)? > > > > I don't remember if this was relevant, but there was some talk of needing to > > use opengl output with a specific texture format for it to work? or is that > > seperate? > > That's something for linux-media. The hardware codec isn't part of vc4 > or v3d, it's a separate controller that requires a separate driver (in > v4l2). > > That driver isn't upstream, and that would need the first thing to > tackle. IdeasOnBoard are working on our behalf to clean up the VCHIQ driver in staging (hopefully unstaging it), and adding the mmal-vchiq, vcsm, and ISP drivers. https://patchwork.linuxtv.org/project/linux-media/list/?series=11633 is probably the latest revision of the series, but there are a number of supporting series around too. The codec driver relies on the same mmal-vchiq and vcsm drivers as the ISP, so adding that afterwards should be relatively simple. Even though he's stepped back from being a maintainer, Stefan Wahren is still keeping track of a number of the upstreaming tasks for the Pi platform - see https://github.com/lategoodbye/rpi-zero/issues/43 Dave
