linux-kernel - Re: [PATCH 00/12] media: rkvdec: Add support for VDPU381 and VDPU383

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Message-ID: <20250714144610.258372-1-liujianfeng1994@gmail.com>
Date: Mon, 14 Jul 2025 22:46:10 +0800
From: Jianfeng Liu <liujianfeng1994@...il.com>
To: detlev.casanova@...labora.com
Cc: heiko@...ech.de,
	kernel@...labora.com,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	linux-media@...r.kernel.org,
	linux-rockchip@...ts.infradead.org,
	liujianfeng1994@...il.com,
	mchehab@...nel.org,
	nicolas.dufresne@...labora.com,
	nicolas.frattaroli@...labora.com
Subject: Re: [PATCH 00/12] media: rkvdec: Add support for VDPU381 and VDPU383

Hi Detlev,

On Mon, 14 Jul 2025 09:35:19, Detlev Casanova wrote:
>>From the linked code, the max size is hard coded to 1920x1088.
>The driver sets the frame size type to V4L2_FRMSIZE_TYPE_CONTINUOUS, so the 
>snippet you pointed to doesn't update the values for max/min. See [2] for the 
>discussion about using V4L2_FRMSIZE_TYPE_CONTINUOUS.

You are right, the code of chromium should be fixed for frame size type
V4L2_FRMSIZE_TYPE_CONTINUOUS.

>> 2, Playing H264 videos ends up with green screen.
>
>Can you elaborate a bit ? What videos ?
>Is that on both SoCs ?
>Is there any logs in dmesg ?

I am playing a 1080p h264 BBB video[1]. There is no error logs from both
chromium and dmesg, but there is only frames refreshing at the top left
corner while the other part of place is green. This happens on both rk3399
and rk3588.

I have checked that this issue is not introduced by your series. After
reverting this commit[2] which adds Support High 10 and 4:2:2 profiles,
chromium can play video well on rk3399. I will investigate further.

[1] https://mirrors.tuna.tsinghua.edu.cn/blender/demo/movies/BBB/bbb_sunflower_1080p_60fps_normal.mp4.zip
[2] https://github.com/torvalds/linux/commit/5e1ff2314797bf53636468a97719a8222deca9ae

Best regards
Jianfeng