linux-kernel - Re: [PATCH v2 25/43] drm/sun4i: frontend: Apply format sub-sampling to CH1 dimensions

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20181127085833.b6jhe5npgsvl2g5f@flea>
Date:   Tue, 27 Nov 2018 09:58:33 +0100
From:   Maxime Ripard <maxime.ripard@...tlin.com>
To:     Paul Kocialkowski <paul.kocialkowski@...tlin.com>
Cc:     linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...ux.ie>,
        Chen-Yu Tsai <wens@...e.org>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        linux-sunxi@...glegroups.com, Daniel Vetter <daniel@...ll.ch>
Subject: Re: [PATCH v2 25/43] drm/sun4i: frontend: Apply format sub-sampling
 to CH1 dimensions

On Fri, Nov 23, 2018 at 10:24:57AM +0100, Paul Kocialkowski wrote:
> The frontend comes with two "channels", that can be configured
> independently. When used in YUV mode, the first channel (CH0) represents
> the luminance component while the second channel (CH1) represents the
> chrominance. In RGB mode, both have to be configured the same way.
> 
> Use variables (with the YUV terminology) for each channel's
> dimensions, calculating the chroma dimensions from the luma dimensions
> and the sub-sampling factors from the format description.
> 
> Since the configured size only has pixel precision, the fractional
> fixed-point part of the source size is dropped for both components to
> ensure that the scaling factors are accurate.
> 
> Signed-off-by: Paul Kocialkowski <paul.kocialkowski@...tlin.com>

Applied, thanks!
Maxime

-- 
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

Download attachment "signature.asc" of type "application/pgp-signature" (229 bytes)