linux-kernel - Re: [PATCH v4 00/11] media: rkvdec: Add H.264 High 10 and 4:2:2 profile support

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Date: Sun, 16 Jun 2024 11:47:43 +0200
From: Diederik de Haas <didi.debian@...ow.org>
To: Ezequiel Garcia <ezequiel@...guardiasur.com.ar>,
 Mauro Carvalho Chehab <mchehab@...nel.org>,
 Hans Verkuil <hverkuil-cisco@...all.nl>, linux-rockchip@...ts.infradead.org,
 Jonas Karlman <jonas@...boo.se>, Andy Yan <andyshrk@....com>
Cc: Alex Bee <knaerzche@...il.com>,
 Nicolas Dufresne <nicolas.dufresne@...labora.com>,
 Benjamin Gaignard <benjamin.gaignard@...labora.com>,
 Sebastian Fricke <sebastian.fricke@...labora.com>,
 Christopher Obbard <chris.obbard@...labora.com>, linux-media@...r.kernel.org,
 linux-rockchip@...ts.infradead.org, linux-staging@...ts.linux.dev,
 linux-kernel@...r.kernel.org, Jonas Karlman <jonas@...boo.se>
Subject:
 Re: [PATCH v4 00/11] media: rkvdec: Add H.264 High 10 and 4:2:2 profile
 support

On Sunday, 5 November 2023 17:54:59 CEST Jonas Karlman wrote:
> This is a revival of a 3 year old series [1] now that NV15/NV20/NV30 support
> for display driver have landed in mainline tree.
> 
> This series adds H.264 High 10 and 4:2:2 profile support to the Rockchip
> Video Decoder driver.
> 
> Patch 1 adds helpers for calculating plane bytesperline and sizeimage.
> Patch 2 adds two new pixelformats for semi-planer 10-bit 4:2:0/4:2:2 YUV.
> 
> Patch 3 change to use bytesperline and buffer height to configure strides.
> Patch 4 change to use values from SPS/PPS control to configure the HW.
> Patch 5 remove an unnecessary call to validate sps at streaming start.
> 
> Patch 6-10 refactor code to support filtering of CAPUTRE formats based
> on the image format returned from a get_image_fmt ops.
> 
> Patch 11 adds final bits to support H.264 High 10 and 4:2:2 profiles.
> 
> Tested on a ROCK Pi 4 (RK3399) and Rock64 (RK3328):
> 
>   v4l2-compliance 1.24.1, 64 bits, 64-bit time_t
>   ...
>   Total for rkvdec device /dev/video1: 46, Succeeded: 46, Failed: 0,
> Warnings: 0
> 
>   Running test suite JVT-FR-EXT with decoder FFmpeg-H.264-V4L2-request
>   ...
>   Ran 65/69 tests successfully
> 
>   Running test suite JVT-AVC_V1 with decoder FFmpeg-H.264-V4L2-request
>   ...
>   Ran 127/135 tests successfully
> 
> Before this series:
> 
>   Running test suite JVT-FR-EXT with decoder FFmpeg-H.264-V4L2-request
>   ...
>   Ran 44/69 tests successfully
> 
> ...
> 
> Following commits adds support for NV15/NV20/NV30 to VOP driver:
> 728c15b4b5f3 ("drm/fourcc: Add NV20 and NV30 YUV formats")
> d4b384228562 ("drm/rockchip: vop: Add NV15, NV20 and NV30 support")
> 
> To fully runtime test this series you may need above drm commits and ffmpeg
> patches from [2], this series and drm patches is also available at [3].
> 
> [1]
> https://lore.kernel.org/linux-media/20200706215430.22859-1-jonas@kwiboo.se/
> [2] https://github.com/Kwiboo/FFmpeg/commits/v4l2-request-n6.1-dev/ [3]
> https://github.com/Kwiboo/linux-rockchip/commits/linuxtv-rkvdec-high-10-v4/
> [4] https://gist.github.com/Kwiboo/f4ac15576b2c72887ae2bc5d58b5c865 [5]
> https://gist.github.com/Kwiboo/459a1c8f1dcb56e45dc7a7a29cc28adf

Reviving this old thread now that rkvdec2 'stuff' emerged.
I have (actually) done quite some tests with this (and "media: rkvdec: Add 
HEVC backend" patch set) and they have been part of my kernel builds ever 
since.
I _think_, but don't know, that is relevant for Andy's question:

On zondag 16 juni 2024 08:58:20 CEST Andy Yan <andyshrk@....com> wrote:
> How can I test these patches? Do they require any additional userspace
> patches?

I have the same question and I think you'd need this and the HEVC patch set 
and then also patch FFmpeg and then it should enable HW acceleration.
So my question boils down to: with the rkvdec2 patch set, should V4L2-requests 
now also work with rkvdec, so not just Hantro anymore?

BTW: the libdrm commits have been merged upstream quite some time ago, so if 
you have a recent version of that, you don't need to patch that.
If you use FFmpeg 7.0, then Jonas has a branch for that too (haven't tried it 
yet though).

FWIW: my test results were a bit mixed. I didn't post them before as I don't 
fully/really understand this 'video stuff', and I didn't want you all to suffer 
from what was likely a PEBKAC issue.

On my PineTab2 (rk3566) I had some h.264 videos HW accelerated, but not all. 
My guess is that it's related to the resolution. 1920x1080 worked, while it 
didn't work with a 1280x640 video. The video still played, just not HW 
accelerated. IOW: improvements in some and otherwise it was just rendered by 
the CPU (I think), just like before.

On my Rock64 I got a pink tint with all videos, like described here:
https://github.com/mpv-player/mpv/issues/12968
IIUC, that's actually a problem in the lima driver?

Cheers,
  Diederik
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