14:36 <detlevc> warpme: for what you see in Kodi, I'm wondering if you are seeing the colmv part of the buffer shown on top of the frame. Technically, the driver allocates a bigger buffer for each frame to store those colmv (because we need one associated to each frame). So the userspace has the responsability to only use the frame data (bytesperline * height),

14:36 <detlevc> could that be the issue here ?

14:36 <detlevc> I couldn't reproduce with kodi yet, does it have its own v4l2-requests implementation ?

14:40 <warpme> detlevc : i don't think so. Why: 1. i have 4 other soc families (amlogic, allwinner, broadcom and earlier rockchip) all works perfectly fine. rkvdec1 (33xx) and rkvdec2 (3588) also works ok. issue seems to be only with rkvdec3. 2. on rkvdec3 sometmes i have perfect playback. it happens randomly but happens....

14:41 <warpme> overal 35+ diff bards works ok....

14:41 <detlevc> warpme: rkvdec3 is rk3576, right ?

14:43 <warpme> re kodi v4l2_req implementation: both player i'm using are based on the sem ver of ffmpeg (7.1) with the same v4l2_req implementation. so maybe v4l2_req kodi/mytht uses is simply not compatible with rkvdec3? if - why sometimes (once per 15-20 playbacks) i have perfect playback on rkvdec3?

14:44 <warpme> yes. ndufresne uses this notation so i borrowed form him :-p

14:44 <warpme>

14:47 <detlevc> it shouldn't be incompatible, plus it shares most setup code with rk3399, so it is probably a bug or a bad assumption somewhere. I'll try to reproduce later and then trace it

14:50 <warpme> this will be qll. if i can help in any way - would love do so....

14:55 <detlevc> what is qll ? :p

15:00 <warpme> oh: i must say collabora is white knight in rk ecosystem for me. without you, crisitian, derek, sebastian poor souls like me will probably abandon masohistic world of linux on low end embedded socs

15:05 <warpme> qll (for me) is to have hw assisted hd/4k tv playback on board costing 1/5 of x86 counterpart and being 10x smaller and running full foss based diskless distributed media center (mythv). or on the same board running https://endeavouros.com

15:07 <warpme> i'm fan of archlinux and endeavouros 7 diff DE to play with on 4c 4G ram 25Eur devices

15:21 <diederik> detlevc: I don't know about kodi in general, but for LibreELEC, there's https://github.com/LibreELEC/LibreELEC.tv/tree/master/packages/multimedia/ffmpeg/patches/v4l2-request

15:21 <diederik> https://github.com/LibreELEC/LibreELEC.tv/tree/master/packages/mediacenter/kodi/patches/drmprime-filter is likely also relevant

18:00 <detlevc> diederik: I already use a patched version of ffmpeg, do I need a specific version of kodi to have v4l2request support ? I have debian's version 21.2

20:28 <CounterPillow> robmur01: Out of curiosity, as the resident member of the A-team here, does Rockchip's interconnect probe hardware on RK3588/RK3399/RK3326/probably more look vaguely familiar to you? I saw they switched to CCI-500 on RK3576 which got me curious, but neither arm-ccn nor arm-cci seem to fit the bill as far as the probe design goes for earlier chips.

20:28 <CounterPillow> Just flipping through PDFs and code files in a panic at the moment to make sure I didn't just begin writing a driver that already exists. Some hardware particulars: 4 16-bit counters per probe, can be chained together to 2 32-bit counters. 8 probes in total, +4 DSU probes which need to be all summed together. References to an "ObsTx observation output" that does not seem mentioned anywhere else, which makes me think vestigial

20:28 <CounterPillow> leftover from IP configuration.

22:36 <diederik> detlevc: AFAIK they've had that patch set for a while. But other then using it with LibreELEC (on Rock64), I've not done anything with kodi directly

22:38 <diederik> I don't think Debian's version of kodi has/uses the LE patchset though.

22:40 <diederik> I myself use/test https://salsa.debian.org/diederik/ffmpeg/-/commits/v4l2-request-support-n7.1 and with those (-dev) packages, build https://salsa.debian.org/diederik/mpv/-/tree/v4l2request-support

22:43 <diederik> detlevc: I deliberately make a distinction between kodi and LibreELEC; I think only the latter has the v4l2-request patch set

22:44 <diederik> And afaict the Debian package is 'normal' kodi