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Message-ID: <da954d28f48319a4bad181eda8bf091356a19d18.camel@mediatek.com>
Date: Wed, 12 Jul 2023 03:12:58 +0000
From: Yunfei Dong (董云飞)
<Yunfei.Dong@...iatek.com>
To: "nhebert@...omium.org" <nhebert@...omium.org>,
"benjamin.gaignard@...labora.com" <benjamin.gaignard@...labora.com>,
"nfraprado@...labora.com" <nfraprado@...labora.com>,
"angelogioacchino.delregno@...labora.com"
<angelogioacchino.delregno@...labora.com>,
"nicolas.dufresne@...labora.com" <nicolas.dufresne@...labora.com>,
"hverkuil-cisco@...all.nl" <hverkuil-cisco@...all.nl>
CC: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-mediatek@...ts.infradead.org"
<linux-mediatek@...ts.infradead.org>,
"frkoenig@...omium.org" <frkoenig@...omium.org>,
"stevecho@...omium.org" <stevecho@...omium.org>,
"wenst@...omium.org" <wenst@...omium.org>,
"linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"daniel@...ll.ch" <daniel@...ll.ch>,
Mingjia Zhang (张明佳)
<Mingjia.Zhang@...iatek.com>,
Project_Global_Chrome_Upstream_Group
<Project_Global_Chrome_Upstream_Group@...iatek.com>,
"hsinyi@...omium.org" <hsinyi@...omium.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 1/3] media: mediatek: vcodec: Add capture format to
support 10bit tile mode
Hi Nicolas,
Thanks for your suggestion.
On Tue, 2023-07-11 at 16:16 -0400, Nicolas Dufresne wrote:
>
> External email : Please do not click links or open attachments until
> you have verified the sender or the content.
> Le mardi 11 juillet 2023 à 20:57 +0800, Yunfei Dong a écrit :
> > From: Mingjia Zhang <mingjia.zhang@...iatek.com>
> >
> > Define one uncompressed capture format V4L2_PIX_FMT_MT2110T in
> order to
> > support 10bit for AV1/VP9/HEVC in mt8195.
> >
> > Signed-off-by: Mingjia Zhang <mingjia.zhang@...iatek.com>
> > Co-developed-by: Yunfei Dong <yunfei.dong@...iatek.com>
> > Signed-off-by: Yunfei Dong <yunfei.dong@...iatek.com>
> > ---
> > Documentation/userspace-api/media/v4l/pixfmt-reserved.rst | 8
> ++++++++
> > drivers/media/v4l2-core/v4l2-common.c | 2 ++
> > drivers/media/v4l2-core/v4l2-ioctl.c | 1 +
> > include/uapi/linux/videodev2.h | 1 +
> > 4 files changed, 12 insertions(+)
> >
> > diff --git a/Documentation/userspace-api/media/v4l/pixfmt-
> reserved.rst b/Documentation/userspace-api/media/v4l/pixfmt-
> reserved.rst
> > index 58f6ae25b2e7..b16a7257580c 100644
> > --- a/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst
> > +++ b/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst
> > @@ -275,6 +275,14 @@ please make a proposal on the linux-media
> mailing list.
> >
> > Decoder's implementation can be found here,
> > `aspeed_codec <
> https://github.com/AspeedTech-BMC/aspeed_codec/>`__
> > + * .. _V4L2-PIX-FMT-MT2110T:
> > +
> > + - ``V4L2_PIX_FMT_MT2110T``
> > + - 'MT2110T'
> > + - Two-planar 10-Bit tile mode YVU420 format used by Mediatek
> MT8195, MT8188
> > + and more. This format have similitude with
> ``V4L2_PIX_FMT_MM21``.
> > + It remains an opaque intermediate format and it is used
> for VP9, AV1
> > + and HEVC.
>
> Documenting uncompressed video formats as "opaque" is always last
> resort in
> V4L2. There is no justification here since this format is already
> implemented in
> software and pending in GStreamer (so its well understood format). I
> will try
> and provide some better doc for you to include.
>
>
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3444
>
It's much better if you can provider the better doc to me.
Thanks you again.
Best Regards,
Yunfei Dong
> > .. raw:: latex
> >
> > \normalsize
> > diff --git a/drivers/media/v4l2-core/v4l2-common.c
> b/drivers/media/v4l2-core/v4l2-common.c
> > index bee1535b04d3..869fc09a210b 100644
> > --- a/drivers/media/v4l2-core/v4l2-common.c
> > +++ b/drivers/media/v4l2-core/v4l2-common.c
> > @@ -262,6 +262,8 @@ const struct v4l2_format_info
> *v4l2_format_info(u32 format)
> > { .format = V4L2_PIX_FMT_VYUY, .pixel_enc = V4L2_PIXEL_ENC_YUV,
> .mem_planes = 1, .comp_planes = 1, .bpp = { 2, 0, 0, 0 }, .bpp_div =
> { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 1 },
> > { .format = V4L2_PIX_FMT_Y212, .pixel_enc = V4L2_PIXEL_ENC_YUV,
> .mem_planes = 1, .comp_planes = 1, .bpp = { 4, 0, 0, 0 }, .bpp_div =
> { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 1 },
> > { .format = V4L2_PIX_FMT_YUV48_12, .pixel_enc =
> V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 1, .bpp = { 6, 0,
> 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 1, .vdiv = 1 },
> > +{ .format = V4L2_PIX_FMT_MT2110T, .pixel_enc = V4L2_PIXEL_ENC_YUV,
> .mem_planes = 2, .comp_planes = 2, .bpp = { 5, 10, 0, 0 }, .bpp_div =
> { 4, 4, 1, 1 }, .hdiv = 2, .vdiv = 2,
> > + .block_w = { 16, 8, 0, 0 }, .block_h = { 32, 16, 0, 0 }},
> >
> > /* YUV planar formats */
> > { .format = V4L2_PIX_FMT_NV12, .pixel_enc = V4L2_PIXEL_ENC_YUV,
> .mem_planes = 1, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .bpp_div =
> { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 2 },
> > diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c
> b/drivers/media/v4l2-core/v4l2-ioctl.c
> > index 01ba27f2ef87..f465c0e3d6e3 100644
> > --- a/drivers/media/v4l2-core/v4l2-ioctl.c
> > +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
> > @@ -1508,6 +1508,7 @@ static void v4l_fill_fmtdesc(struct
> v4l2_fmtdesc *fmt)
> > case V4L2_PIX_FMT_QC10C:descr = "QCOM Compressed 10-bit Format";
> break;
> > case V4L2_PIX_FMT_AJPG:descr = "Aspeed JPEG"; break;
> > case V4L2_PIX_FMT_AV1_FRAME:descr = "AV1 Frame"; break;
> > +case V4L2_PIX_FMT_MT2110T:descr = "Mediatek 10bit Tile Mode";
> break;
> > default:
> > if (fmt->description[0])
> > return;
> > diff --git a/include/uapi/linux/videodev2.h
> b/include/uapi/linux/videodev2.h
> > index 3af6a82d0cad..8c7d71afbdc7 100644
> > --- a/include/uapi/linux/videodev2.h
> > +++ b/include/uapi/linux/videodev2.h
> > @@ -796,6 +796,7 @@ struct v4l2_pix_format {
> > #define V4L2_PIX_FMT_Z16 v4l2_fourcc('Z', '1', '6', ' ') /*
> Depth data 16-bit */
> > #define V4L2_PIX_FMT_MT21C v4l2_fourcc('M', 'T', '2', '1') /*
> Mediatek compressed block mode */
> > #define V4L2_PIX_FMT_MM21 v4l2_fourcc('M', 'M', '2', '1') /*
> Mediatek 8-bit block mode, two non-contiguous planes */
> > +#define V4L2_PIX_FMT_MT2110T v4l2_fourcc('M', 'T', '2', 'T') /*
> Mediatek 10-bit block tile mode */
> > #define V4L2_PIX_FMT_INZI v4l2_fourcc('I', 'N', 'Z', 'I') /*
> Intel Planar Greyscale 10-bit and Depth 16-bit */
> > #define V4L2_PIX_FMT_CNF4 v4l2_fourcc('C', 'N', 'F', '4') /*
> Intel 4-bit packed depth confidence information */
> > #define V4L2_PIX_FMT_HI240 v4l2_fourcc('H', 'I', '2', '4') /*
> BTTV 8-bit dithered RGB */
>
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