From: "Jernej Škrabec" <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 [thread overview]
Message-ID: <2135691.irdbgypaU6@kista> (raw)
In-Reply-To: <20230324151228.2778112-5-paul.kocialkowski@bootlin.com>
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
WARNING: multiple messages have this Message-ID (diff)
From: "Jernej Škrabec" <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 [thread overview]
Message-ID: <2135691.irdbgypaU6@kista> (raw)
In-Reply-To: <20230324151228.2778112-5-paul.kocialkowski@bootlin.com>
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
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2023-03-25 7:08 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-24 15:12 [PATCH 0/9] media: sun6i-csi/isp: Implement MC I/O support Paul Kocialkowski
2023-03-24 15:12 ` Paul Kocialkowski
2023-03-24 15:12 ` [PATCH 1/9] media: v4l2: Add RGB565X pixel format to v4l2 format info Paul Kocialkowski
2023-03-24 15:12 ` Paul Kocialkowski
2023-03-25 7:06 ` Jernej Škrabec
2023-03-25 7:06 ` Jernej Škrabec
2023-03-25 20:59 ` Laurent Pinchart
2023-03-25 20:59 ` Laurent Pinchart
2023-03-24 15:12 ` [PATCH 2/9] media: v4l2: Add NV12_16L16 " Paul Kocialkowski
2023-03-24 15:12 ` Paul Kocialkowski
2023-03-25 7:06 ` Jernej Škrabec
2023-03-25 7:06 ` Jernej Škrabec
2023-03-25 21:01 ` Laurent Pinchart
2023-03-25 21:01 ` Laurent Pinchart
2023-03-31 18:54 ` Nicolas Dufresne
2023-03-31 18:54 ` Nicolas Dufresne
2023-04-05 4:21 ` Laurent Pinchart
2023-04-05 4:21 ` Laurent Pinchart
2023-04-11 13:03 ` Nicolas Dufresne
2023-04-11 13:03 ` Nicolas Dufresne
2023-04-11 15:30 ` Nicolas Dufresne
2023-04-11 15:30 ` Nicolas Dufresne
2023-03-24 15:12 ` [PATCH 3/9] media: v4l2: Introduce compressed pixel encoding definition and helper Paul Kocialkowski
2023-03-24 15:12 ` Paul Kocialkowski
2023-03-25 7:07 ` Jernej Škrabec
2023-03-25 7:07 ` Jernej Škrabec
2023-03-24 15:12 ` [PATCH 4/9] media: v4l2: Add JPEG pixel format to v4l2 format info Paul Kocialkowski
2023-03-24 15:12 ` Paul Kocialkowski
2023-03-25 7:08 ` Jernej Škrabec [this message]
2023-03-25 7:08 ` Jernej Škrabec
2023-03-31 19:07 ` Nicolas Dufresne
2023-03-31 19:07 ` Nicolas Dufresne
2023-03-24 15:12 ` [PATCH 5/9] media: sun6i-csi: capture: Rework and separate format validation Paul Kocialkowski
2023-03-24 15:12 ` Paul Kocialkowski
2023-03-25 7:09 ` Jernej Škrabec
2023-03-25 7:09 ` Jernej Škrabec
2023-03-25 21:24 ` Laurent Pinchart
2023-03-25 21:24 ` Laurent Pinchart
2023-03-24 15:12 ` [PATCH 6/9] media: sun6i-csi: capture: Implement MC I/O with extended enum_fmt Paul Kocialkowski
2023-03-24 15:12 ` Paul Kocialkowski
2023-03-25 7:13 ` Jernej Škrabec
2023-03-25 7:13 ` Jernej Škrabec
2023-03-25 21:29 ` Laurent Pinchart
2023-03-25 21:29 ` Laurent Pinchart
2023-03-24 15:12 ` [PATCH 7/9] media: sun6i-csi: capture: Implement enum_framesizes Paul Kocialkowski
2023-03-24 15:12 ` Paul Kocialkowski
2023-03-25 7:13 ` Jernej Škrabec
2023-03-25 7:13 ` Jernej Škrabec
2023-03-25 21:33 ` Laurent Pinchart
2023-03-25 21:33 ` Laurent Pinchart
2023-03-24 15:12 ` [PATCH 8/9] media: sun6i-isp: capture: Implement MC I/O with extended enum_fmt Paul Kocialkowski
2023-03-24 15:12 ` Paul Kocialkowski
2023-03-25 7:14 ` Jernej Škrabec
2023-03-25 7:14 ` Jernej Škrabec
2023-03-25 21:42 ` Laurent Pinchart
2023-03-25 21:42 ` Laurent Pinchart
2023-03-24 15:12 ` [PATCH 9/9] media: sun6i-isp: capture: Implement enum_framesizes Paul Kocialkowski
2023-03-24 15:12 ` Paul Kocialkowski
2023-03-25 7:14 ` Jernej Škrabec
2023-03-25 7:14 ` Jernej Škrabec
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=2135691.irdbgypaU6@kista \
--to=jernej.skrabec@gmail.com \
--cc=adam@piggz.co.uk \
--cc=laurent.pinchart@ideasonboard.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-media@vger.kernel.org \
--cc=linux-staging@lists.linux.dev \
--cc=linux-sunxi@lists.linux.dev \
--cc=mchehab@kernel.org \
--cc=paul.kocialkowski@bootlin.com \
--cc=samuel@sholland.org \
--cc=thomas.petazzoni@bootlin.com \
--cc=wens@csie.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.