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From:   Jernej =?utf-8?B?xaBrcmFiZWM=?= <jernej.skrabec@gmail.com>
To:     linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org,
        linux-staging@lists.linux.dev,
        Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Cc:     Paul Kocialkowski <paul.kocialkowski@bootlin.com>,
        Mauro Carvalho Chehab <mchehab@kernel.org>,
        Chen-Yu Tsai <wens@csie.org>,
        Samuel Holland <samuel@sholland.org>,
        Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
        Adam Pigg <adam@piggz.co.uk>,
        Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Subject: Re: [PATCH 4/9] media: v4l2: Add JPEG pixel format to v4l2 format info
Date:   Sat, 25 Mar 2023 08:08:17 +0100
Message-ID: <2135691.irdbgypaU6@kista>
In-Reply-To: <20230324151228.2778112-5-paul.kocialkowski@bootlin.com>
References: <20230324151228.2778112-1-paul.kocialkowski@bootlin.com>
 <20230324151228.2778112-5-paul.kocialkowski@bootlin.com>
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Dne petek, 24. marec 2023 ob 16:12:23 CET je Paul Kocialkowski napisal(a):
> Represent the JPEG pixel format in the v4l2 format info table.
> 
> Note that the bpp is set to 1 which is not a proper way to estimate
> the needed buffer size for a given JPEG image. However the compression
> ratios of JPEG typically allow fitting the image in a smaller size,
> even though extra metadata could increase the total size by an
> arbitrary amount. Thus it is not a perfectly safe way to calculate the
> size of a JPEG buffer for given dimensions but it still provides a
> reasonable approach.
> 
> Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>

Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>

Best regards,
Jernej