Re: [PATCH v4 0/4] Add Synopsys DesignWare HDMI RX Controller

From: Nicolas Dufresne <nicolas.dufresne@collabora.com>
To: Tim Surber <me@timsurber.de>,
	Dmitry Osipenko <dmitry.osipenko@collabora.com>,
	Shreeya Patel <shreeya.patel@collabora.com>,
	 heiko@sntech.de, mchehab@kernel.org, robh@kernel.org,
	krzk+dt@kernel.org,  conor+dt@kernel.org,
	mturquette@baylibre.com, sboyd@kernel.org,
	 p.zabel@pengutronix.de, jose.abreu@synopsys.com,
	nelson.costa@synopsys.com,  shawn.wen@rock-chips.com,
	hverkuil@xs4all.nl, hverkuil-cisco@xs4all.nl
Cc: kernel@collabora.com, linux-kernel@vger.kernel.org,
	 linux-media@vger.kernel.org, devicetree@vger.kernel.org,
	 linux-arm-kernel@lists.infradead.org,
	linux-rockchip@lists.infradead.org
Subject: Re: [PATCH v4 0/4] Add Synopsys DesignWare HDMI RX Controller
Date: Tue, 06 Aug 2024 17:17:58 -0400	[thread overview]
Message-ID: <3c388a51fef3d2c284fe7648ffd7215e097980a9.camel@collabora.com> (raw)
In-Reply-To: <06838f40-881c-4301-826b-e29a4277e663@timsurber.de>

Hi Tim,

Le mardi 06 août 2024 à 22:37 +0200, Tim Surber a écrit :
> ###source set to 4k60fps####
> ---------------------------
> v4l2-ctl --verbose -d /dev/video1 
> --set-fmt-video=width=3840,height=2160,pixelformat='NV12' 
> --stream-mmap=4 --stream-skip=3 --stream-count=100 --stream-poll
> ---------------------------
> VIDIOC_QUERYCAP: ok
> VIDIOC_G_FMT: ok
> VIDIOC_S_FMT: ok
> Format Video Capture Multiplanar:
>      Width/Height      : 3840/2160
>      Pixel Format      : 'NV12' (Y/UV 4:2:0)
>      Field             : None
>      Number of planes  : 1
>      Flags             :
>      Colorspace        : sRGB
>      Transfer Function : Default
>      YCbCr/HSV Encoding: Default
>      Quantization      : Default
>      Plane 0           :
>         Bytes per Line : 3840
>         Size Image     : 8294400

You have highlighted a bug here. NV12 has 2 planes, but the size image only
allow for the luma to be stored.

   Size Image: 3840 * 2160 * 3 / 2 = 12441600 bytes.

Lets at least get that fixed, and check again.

Nicolas
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