From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?B?V3UtQ2hlbmcgTGkgKOadjuWLmeiqoCk=?= Subject: Re: [PATCH v3 3/9] DocBook/v4l: Add compressed video formats used on MT8173 codec driver Date: Tue, 12 Jul 2016 16:16:14 +0800 Message-ID: References: <1464611363-14936-1-git-send-email-tiffany.lin@mediatek.com> <1464611363-14936-2-git-send-email-tiffany.lin@mediatek.com> <1464611363-14936-3-git-send-email-tiffany.lin@mediatek.com> <1464611363-14936-4-git-send-email-tiffany.lin@mediatek.com> <5a793171-24a7-4e9e-8bfd-f668c789f8e0@xs4all.nl> <1468205771.3725.8.camel@mtksdaap41> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Return-path: In-Reply-To: <1468205771.3725.8.camel@mtksdaap41> Sender: linux-media-owner@vger.kernel.org To: tiffany lin Cc: Hans Verkuil , Hans Verkuil , Daniel Thompson , Rob Herring , Mauro Carvalho Chehab , Matthias Brugger , Daniel Kurtz , Pawel Osciak , Eddie Huang , Yingjoe Chen , 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 List-Id: devicetree@vger.kernel.org On Mon, Jul 11, 2016 at 10:56 AM, tiffany lin wrote: > Hi Hans, > > On Fri, 2016-07-08 at 12:23 +0200, Hans Verkuil wrote: >> On 05/30/2016 02:29 PM, Tiffany Lin wrote: >> > Add V4L2_PIX_FMT_MT21 documentation >> > >> > Signed-off-by: Tiffany Lin >> > --- >> > Documentation/DocBook/media/v4l/pixfmt.xml | 6 ++++++ >> > 1 file changed, 6 insertions(+) >> > >> > diff --git a/Documentation/DocBook/media/v4l/pixfmt.xml b/Documentation/DocBook/media/v4l/pixfmt.xml >> > index 5a08aee..d40e0ce 100644 >> > --- a/Documentation/DocBook/media/v4l/pixfmt.xml >> > +++ b/Documentation/DocBook/media/v4l/pixfmt.xml >> > @@ -1980,6 +1980,12 @@ array. Anything what's in between the UYVY lines is JPEG data and should be >> > concatenated to form the JPEG stream. >> > >> > >> > + >> > + V4L2_PIX_FMT_MT21 >> > + 'MT21' >> > + Compressed two-planar YVU420 format used by Mediatek MT8173 >> > + codec driver. >> >> Can you give a few more details? The encoder driver doesn't seem to produce this >> format, so who is creating this? Where is this format documented? 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. > This private format is only available in our platform. > So I put it in "Reserved Format Identifiers" sections. > > > best regards, > Tiffany > >> Regards, >> >> Hans >> >> > + >> > >> > >> > >> > > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-media" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html