From: Nicolas Dufresne <nicolas.dufresne@gmail.com>
To: "Wu-Cheng Li (李務誠)" <wuchengli@chromium.org>,
"tiffany lin" <tiffany.lin@mediatek.com>
Cc: Hans Verkuil <hverkuil@xs4all.nl>,
Hans Verkuil <hans.verkuil@cisco.com>,
Daniel Thompson <daniel.thompson@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Mauro Carvalho Chehab <mchehab@osg.samsung.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
Daniel Kurtz <djkurtz@chromium.org>,
Pawel Osciak <posciak@chromium.org>,
Eddie Huang <eddie.huang@mediatek.com>,
Yingjoe Chen <yingjoe.chen@mediatek.com>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-media@vger.kernel.org, linux-mediatek@lists.infradead.org,
Lin PoChun <PoChun.Lin@mediatek.com>
Subject: Re: [PATCH v3 3/9] DocBook/v4l: Add compressed video formats used on MT8173 codec driver
Date: Tue, 12 Jul 2016 15:08:31 -0400 [thread overview]
Message-ID: <1468350511.8843.16.camel@gmail.com> (raw)
In-Reply-To: <CAOMLVLiZU3D587dSyp2b2v4DV+MS9vh85bA4BoG7ddK6556rbA@mail.gmail.com>
Le mardi 12 juillet 2016 à 16:16 +0800, Wu-Cheng Li (李務誠) a écrit :
> Decoder hardware produces MT21 (compressed). Image processor can
> convert it to a format that can be input of display driver. Tiffany.
> When do you plan to upstream image processor (mtk-mdp)?
> >
> > It can be as input format for encoder, MDP and display drivers in
> our
> > platform.
> I remember display driver can only accept uncompressed MT21. Right?
> Basically V4L2_PIX_FMT_MT21 is compressed and is like an opaque
> format. It's not usable until it's decompressed and converted by
> image
> processor.
Previously it was described as MediaTek block mode, and now as a
MediaTek compressed format. It makes me think you have no idea what
this pixel format really is. Is that right ?
The main reason why I keep asking, is that we often find similarities
between what vendor like to call their proprietary formats. Doing the
proper research helps not creating a mess like in Android where you
have a lot of formats that all point to the same format. I believe
there was the same concern when Samsung wanted to introduce their Z-
flip-Z NV12 tile format. In the end they simply provided sufficient
documentation so we could document it and implement software converters
for test and validation purpose.
regards,
Nicolas
WARNING: multiple messages have this Message-ID (diff)
From: nicolas.dufresne@gmail.com (Nicolas Dufresne)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 3/9] DocBook/v4l: Add compressed video formats used on MT8173 codec driver
Date: Tue, 12 Jul 2016 15:08:31 -0400 [thread overview]
Message-ID: <1468350511.8843.16.camel@gmail.com> (raw)
In-Reply-To: <CAOMLVLiZU3D587dSyp2b2v4DV+MS9vh85bA4BoG7ddK6556rbA@mail.gmail.com>
Le mardi 12 juillet 2016 ? 16:16 +0800, Wu-Cheng Li (???) a ?crit?:
> Decoder hardware produces MT21 (compressed). Image processor can
> convert it to a format that can be input of display driver. Tiffany.
> When do you plan to upstream image processor (mtk-mdp)?
> >
> > It can be as input format for encoder, MDP and display drivers in
> our
> > platform.
> I remember display driver can only accept uncompressed MT21. Right?
> Basically V4L2_PIX_FMT_MT21 is compressed and is like an opaque
> format. It's not usable until it's decompressed and converted by
> image
> processor.
Previously it was described as MediaTek block mode, and now as a
MediaTek compressed format. It makes me think you have no idea what
this pixel format really is. Is that right ?
The main reason why I keep asking, is that we often find similarities
between what vendor like to call their proprietary formats. Doing the
proper research helps not creating a mess like in Android where you
have a lot of formats that all point to the same format. I believe
there was the same concern when Samsung wanted to introduce their Z-
flip-Z NV12 tile format. In the end they simply provided sufficient
documentation so we could document it and implement software converters
for test and validation purpose.
regards,
Nicolas
next prev parent reply other threads:[~2016-07-12 19:08 UTC|newest]
Thread overview: 125+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-30 12:29 [PATCH v3 0/9] Add MT8173 Video Decoder Driver Tiffany Lin
2016-05-30 12:29 ` Tiffany Lin
2016-05-30 12:29 ` Tiffany Lin
2016-05-30 12:29 ` [PATCH v3 1/9] VPU: mediatek: Add decode support Tiffany Lin
2016-05-30 12:29 ` Tiffany Lin
2016-05-30 12:29 ` Tiffany Lin
2016-05-30 12:29 ` [PATCH v3 2/9] v4l: add Mediatek compressed video block format Tiffany Lin
2016-05-30 12:29 ` Tiffany Lin
2016-05-30 12:29 ` Tiffany Lin
2016-05-30 12:29 ` [PATCH v3 3/9] DocBook/v4l: Add compressed video formats used on MT8173 codec driver Tiffany Lin
2016-05-30 12:29 ` Tiffany Lin
2016-05-30 12:29 ` Tiffany Lin
2016-05-30 12:29 ` [PATCH v3 4/9] dt-bindings: Add a binding for Mediatek Video Decoder Tiffany Lin
2016-05-30 12:29 ` Tiffany Lin
2016-05-30 12:29 ` Tiffany Lin
2016-05-30 12:29 ` [PATCH v3 5/9] vcodec: mediatek: Add Mediatek V4L2 Video Decoder Driver Tiffany Lin
2016-05-30 12:29 ` Tiffany Lin
2016-05-30 12:29 ` Tiffany Lin
2016-05-30 12:29 ` [PATCH v3 6/9] vcodec: mediatek: Add Mediatek H264 " Tiffany Lin
2016-05-30 12:29 ` Tiffany Lin
2016-05-30 12:29 ` Tiffany Lin
2016-05-30 12:29 ` [PATCH v3 7/9] vcodec: mediatek: Add Mediatek VP8 " Tiffany Lin
2016-05-30 12:29 ` Tiffany Lin
2016-05-30 12:29 ` Tiffany Lin
2016-05-30 12:29 ` [PATCH v3 8/9] vcodec: mediatek: Add Mediatek VP9 " Tiffany Lin
2016-05-30 12:29 ` Tiffany Lin
2016-05-30 12:29 ` Tiffany Lin
2016-05-30 12:29 ` [PATCH v3 9/9] arm64: dts: mediatek: Add Video Decoder for MT8173 Tiffany Lin
2016-05-30 12:29 ` Tiffany Lin
2016-05-30 12:29 ` Tiffany Lin
2016-07-08 11:06 ` [PATCH v3 5/9] vcodec: mediatek: Add Mediatek V4L2 Video Decoder Driver Hans Verkuil
2016-07-08 11:06 ` Hans Verkuil
2016-08-01 9:38 ` Tiffany Lin
2016-08-01 9:38 ` Tiffany Lin
2016-08-01 9:38 ` Tiffany Lin
2016-08-01 10:39 ` Hans Verkuil
2016-08-01 10:39 ` Hans Verkuil
2016-08-01 11:28 ` Tiffany Lin
2016-08-01 11:28 ` Tiffany Lin
2016-08-01 11:28 ` Tiffany Lin
2016-07-08 10:23 ` [PATCH v3 3/9] DocBook/v4l: Add compressed video formats used on MT8173 codec driver Hans Verkuil
2016-07-08 10:23 ` Hans Verkuil
2016-07-08 10:23 ` Hans Verkuil
2016-07-11 2:56 ` tiffany lin
2016-07-11 2:56 ` tiffany lin
2016-07-11 2:56 ` tiffany lin
2016-07-12 8:16 ` Wu-Cheng Li (李務誠)
2016-07-12 8:16 ` Wu-Cheng Li (李務誠)
2016-07-12 19:08 ` Nicolas Dufresne [this message]
2016-07-12 19:08 ` Nicolas Dufresne
2016-07-12 19:14 ` Nicolas Dufresne
2016-07-12 19:14 ` Nicolas Dufresne
2016-07-12 19:31 ` Ian Arkver
2016-07-12 19:31 ` Ian Arkver
2016-07-13 2:00 ` tiffany lin
2016-07-13 2:00 ` tiffany lin
2016-07-13 2:00 ` tiffany lin
2016-07-13 13:55 ` Nicolas Dufresne
2016-07-13 13:55 ` Nicolas Dufresne
2016-07-13 13:55 ` Nicolas Dufresne
2016-07-14 7:30 ` tiffany lin
2016-07-14 7:30 ` tiffany lin
2016-07-13 2:22 ` Wu-Cheng Li (李務誠)
2016-07-13 2:22 ` Wu-Cheng Li (李務誠)
2016-07-13 2:22 ` Wu-Cheng Li (李務誠)
2016-07-13 1:50 ` tiffany lin
2016-07-13 1:50 ` tiffany lin
2016-07-13 1:50 ` tiffany lin
2016-07-13 2:03 ` tiffany lin
2016-07-13 2:03 ` tiffany lin
2016-07-13 2:03 ` tiffany lin
2016-06-07 14:22 ` [PATCH v3 0/9] Add MT8173 Video Decoder Driver Mauro Carvalho Chehab
2016-06-07 14:22 ` Mauro Carvalho Chehab
2016-06-07 14:22 ` Mauro Carvalho Chehab
2016-06-07 22:13 ` Hans Verkuil
2016-06-07 22:13 ` Hans Verkuil
2016-06-07 22:13 ` Hans Verkuil
2016-06-14 8:44 ` Wu-Cheng Li (李務誠)
2016-06-14 8:44 ` Wu-Cheng Li (李務誠)
2016-06-14 8:44 ` Wu-Cheng Li (李務誠)
2016-06-14 11:08 ` tiffany lin
2016-06-14 11:08 ` tiffany lin
2016-06-14 11:08 ` tiffany lin
2016-06-16 10:54 ` Mauro Carvalho Chehab
2016-06-16 10:54 ` Mauro Carvalho Chehab
2016-07-01 10:11 ` Hans Verkuil
2016-07-01 10:11 ` Hans Verkuil
2016-07-01 10:11 ` Hans Verkuil
2016-07-01 10:47 ` Wu-Cheng Li (李務誠)
2016-07-01 10:47 ` Wu-Cheng Li (李務誠)
2016-07-01 10:47 ` Wu-Cheng Li (李務誠)
2016-07-01 11:53 ` andrew-ct chen
2016-07-01 11:53 ` andrew-ct chen
2016-07-01 11:53 ` andrew-ct chen
2016-07-01 12:00 ` Hans Verkuil
2016-07-01 12:00 ` Hans Verkuil
2016-07-01 12:00 ` Hans Verkuil
2016-07-04 11:09 ` andrew-ct chen
2016-07-04 11:09 ` andrew-ct chen
2016-07-04 11:09 ` andrew-ct chen
2016-07-06 13:19 ` Hans Verkuil
2016-07-06 13:19 ` Hans Verkuil
2016-07-07 10:16 ` tiffany lin
2016-07-07 10:16 ` tiffany lin
2016-07-07 10:16 ` tiffany lin
2016-07-07 11:13 ` Hans Verkuil
2016-07-07 11:13 ` Hans Verkuil
2016-07-08 11:44 ` Hans Verkuil
2016-07-08 11:44 ` Hans Verkuil
2016-07-11 3:58 ` tiffany lin
2016-07-11 3:58 ` tiffany lin
2016-07-11 3:58 ` tiffany lin
2016-07-21 9:12 ` tiffany lin
2016-07-21 9:12 ` tiffany lin
2016-07-21 9:12 ` tiffany lin
2016-08-15 8:30 ` Hans Verkuil
2016-08-15 8:30 ` Hans Verkuil
2016-08-15 9:03 ` Tiffany Lin
2016-08-15 9:03 ` Tiffany Lin
2016-08-15 9:03 ` Tiffany Lin
2016-08-15 9:07 ` Hans Verkuil
2016-08-15 9:07 ` Hans Verkuil
2016-08-15 9:10 ` Tiffany Lin
2016-08-15 9:10 ` Tiffany Lin
2016-08-15 9:10 ` Tiffany Lin
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