Re: [PATCH v12 0/6] Add Amlogic stateless H.264 video decoder for S4

[Zhentao Guo <zhentao.guo@amlogic.com>]

Hi Nicolas,

>
> Hi,
>
>
> ---- Le ven., 30 oct. 2026 10:24:06 -0400 wbieganski@baylibre.com a écrit ----
>
>
>> Hi,
>> I tested v12 series on AQ222 board with v7.2-rc1. Firmware version:
>> 'v0.4.ff.I0c83495.75444b3' build 'Thu Apr 16 18:18:55 2026'.
>
> That reminded me, is that firmware in linux-firmware?
This firmware is currently not in the repo of linux firmware. Should we 
merge the driver first, and then submit the blob to the firmware repo?
>
>
> Nicolas

BRs

Zhentao

>> RAW NV12 frames at the decoder output were visually OK across typical
>> resolutions and H.264 profiles (main, high, baseline) with and without
>> B-frames in the stream, also with I-frames only streams. I used Gstreamer's
>> (ver. 1.26) 'v4l2slh264dec' element on Trixie with both mmap and DMA-bufs
>> buffering (on the capture queue only). Input bitstreams where
>> FFmpeg-generated (testsrc2 + libx264) or publicly available test videos.
>>
>> Decoder (and the output) remained stable with simulated (non key) frame
>> drop at max resolution (1920x1088, noise generated by FFmpeg's bitstream
>> filter).
>>
>> The performance at max resolution, tested with 'filesrc ! parsebin !
>> v4l2slh264dec ! fakevideosink' pipeline was ~85 fps (fixed number of
>> outputted frames divided by the total execution time).
>>
>> Tested-by: Wojciech Biegański
>>