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Message-ID: <20220812071150.GA5705@tom-ThinkPad-T14s-Gen-2i>
Date: Fri, 12 Aug 2022 09:11:50 +0200
From: Tommaso Merciai <tommaso.merciai@...rulasolutions.com>
To: Ming Qian <ming.qian@....com>
Cc: "mchehab@...nel.org" <mchehab@...nel.org>,
"hverkuil-cisco@...all.nl" <hverkuil-cisco@...all.nl>,
"shawnguo@...nel.org" <shawnguo@...nel.org>,
"robh+dt@...nel.org" <robh+dt@...nel.org>,
"s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
"kernel@...gutronix.de" <kernel@...gutronix.de>,
"festevam@...il.com" <festevam@...il.com>,
dl-linux-imx <linux-imx@....com>,
"X.H. Bao" <xiahong.bao@....com>,
"linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [EXT] Re: [PATCH v4 1/4] media: add nv12_8l128 and
nv12_10be_8l128 video format.
Hi Ming,
On Fri, Aug 12, 2022 at 01:25:37AM +0000, Ming Qian wrote:
> >From: Tommaso Merciai <tommaso.merciai@...rulasolutions.com>
> >Sent: 2022年8月11日 23:19
> >To: Ming Qian <ming.qian@....com>
> >Cc: mchehab@...nel.org; hverkuil-cisco@...all.nl; shawnguo@...nel.org;
> >robh+dt@...nel.org; s.hauer@...gutronix.de; kernel@...gutronix.de;
> >festevam@...il.com; dl-linux-imx <linux-imx@....com>; X.H. Bao
> ><xiahong.bao@....com>; linux-media@...r.kernel.org;
> >linux-kernel@...r.kernel.org; linux-arm-kernel@...ts.infradead.org
> >Subject: [EXT] Re: [PATCH v4 1/4] media: add nv12_8l128 and
> >nv12_10be_8l128 video format.
> >
> >Caution: EXT Email
> >
> >Hi Ming,
> >
> >On Tue, Aug 09, 2022 at 02:50:38PM +0800, Ming Qian wrote:
> >> add contiguous nv12 tiled format nv12_8l128 and nv12_10be_8l128
> >>
> >> Signed-off-by: Ming Qian <ming.qian@....com>
> >> Reviewed-by: Nicolas Dufresne <nicolas.dufresne@...labora.com>
> >> ---
> >> .../userspace-api/media/v4l/pixfmt-yuv-planar.rst | 8 ++++++++
> >> drivers/media/v4l2-core/v4l2-ioctl.c | 2 ++
> >> include/uapi/linux/videodev2.h | 2 ++
> >> 3 files changed, 12 insertions(+)
> >>
> >> diff --git
> >> a/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst
> >> b/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst
> >> index 10b1feeb0b57..f1d5bb7b806d 100644
> >> --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst
> >> +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst
> >> @@ -273,7 +273,9 @@ of the luma plane.
> >> .. _V4L2-PIX-FMT-NV12-16L16:
> >> .. _V4L2-PIX-FMT-NV12-32L32:
> >> .. _V4L2-PIX-FMT-NV12M-8L128:
> >> +.. _V4L2-PIX-FMT-NV12-8L128:
> >> .. _V4L2-PIX-FMT-NV12M-10BE-8L128:
> >> +.. _V4L2-PIX-FMT-NV12-10BE-8L128:
> >> .. _V4L2-PIX-FMT-MM21:
> >>
> >> Tiled NV12
> >> @@ -319,6 +321,9 @@ pixels in 2D 8x128 tiles, and stores tiles linearly in
> >memory.
> >> The image height must be aligned to a multiple of 128.
> >> The layouts of the luma and chroma planes are identical.
> >>
> >> +``V4L2_PIX_FMT_NV12_8L128`` is similar to
> >> +``V4L2_PIX_FMT_NV12M_8L128`` but stores two planes in one memory.
> >> +
> >
> >Don't know, maybe we need more details here?
>
> Hi Tommaso,
> I have added the non contiguous format V4L2_PIX_FMT_NV12M_8L128, they're almost same, but store two planes in contiguous memory or non contiguous memory, just like NV12 and NV12M,
> the descriptions are almost the same, so I just say V4L2_PIX_FMT_NV12_8L128 is similar to V4L2_PIX_FMT_NV12M_8L128.
> Do I need to copy the full description from the V4L2_PIX_FMT_NV12M_8L128 to here?
>
> Ming
You are right the only differences is in which way the planes are
stored in memory, sorry. It's clear :)
Thanks for clarifications,
Tommaso
>
> >
> >> ``V4L2_PIX_FMT_NV12M_10BE_8L128`` is similar to
> >> ``V4L2_PIX_FMT_NV12M`` but stores
> >> 10 bits pixels in 2D 8x128 tiles, and stores tiles linearly in memory.
> >> the data is arranged in big endian order.
> >> @@ -334,6 +339,9 @@ byte 2: Y1(bits 3-0) Y2(bits 9-6) byte 3: Y2(bits
> >> 5-0) Y3(bits 9-8) byte 4: Y3(bits 7-0)
> >>
> >> +``V4L2_PIX_FMT_NV12_10BE_8L128`` is similar to
> >> +``V4L2_PIX_FMT_NV12M_10BE_8L128`` but stores two planes in one
> >memory.
> >> +
> >
> >here also?
>
> It's the same issue.
>
> >
> >> ``V4L2_PIX_FMT_MM21`` store luma pixel in 16x32 tiles, and chroma
> >> pixels in 16x16 tiles. The line stride must be aligned to a multiple
> >> of 16 and the image height must be aligned to a multiple of 32. The
> >> number of luma and chroma diff --git
> >> a/drivers/media/v4l2-core/v4l2-ioctl.c
> >> b/drivers/media/v4l2-core/v4l2-ioctl.c
> >> index c314025d977e..d973bd2ff750 100644
> >> --- a/drivers/media/v4l2-core/v4l2-ioctl.c
> >> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
> >> @@ -1444,7 +1444,9 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc
> >*fmt)
> >> case V4L2_META_FMT_VIVID: descr = "Vivid Metadata"; break;
> >> case V4L2_META_FMT_RK_ISP1_PARAMS: descr = "Rockchip
> >ISP1 3A Parameters"; break;
> >> case V4L2_META_FMT_RK_ISP1_STAT_3A: descr = "Rockchip ISP1
> >3A Statistics"; break;
> >> + case V4L2_PIX_FMT_NV12_8L128: descr = "NV12 (8x128 Linear)";
> >break;
> >> case V4L2_PIX_FMT_NV12M_8L128: descr = "NV12M (8x128
> >Linear)";
> >> break;
> >> + case V4L2_PIX_FMT_NV12_10BE_8L128: descr = "10-bit NV12
> >(8x128 Linear, BE)"; break;
> >> case V4L2_PIX_FMT_NV12M_10BE_8L128: descr = "10-bit
> >NV12M (8x128 Linear, BE)"; break;
> >>
> >> default:
> >> diff --git a/include/uapi/linux/videodev2.h
> >> b/include/uapi/linux/videodev2.h index cd66e01ed3c3..64f16490dd2b
> >> 100644
> >> --- a/include/uapi/linux/videodev2.h
> >> +++ b/include/uapi/linux/videodev2.h
> >> @@ -655,6 +655,8 @@ struct v4l2_pix_format { #define
> >> V4L2_PIX_FMT_NV12_16L16 v4l2_fourcc('H', 'M', '1', '2') /* 12 Y/CbCr
> >> 4:2:0 16x16 tiles */ #define V4L2_PIX_FMT_NV12_32L32 v4l2_fourcc('S',
> >> 'T', '1', '2') /* 12 Y/CbCr 4:2:0 32x32 tiles */ #define
> >> V4L2_PIX_FMT_P010_4L4 v4l2_fourcc('T', '0', '1', '0') /* 12 Y/CbCr
> >> 4:2:0 10-bit 4x4 macroblocks */
> >> +#define V4L2_PIX_FMT_NV12_8L128 v4l2_fourcc('A', 'T', '1', '2') /*
> >Y/CbCr 4:2:0 8x128 tiles */
> >> +#define V4L2_PIX_FMT_NV12_10BE_8L128 v4l2_fourcc_be('A', 'X', '1',
> >> +'2') /* Y/CbCr 4:2:0 10-bit 8x128 tiles */
> >>
> >> /* Tiled YUV formats, non contiguous planes */ #define
> >> V4L2_PIX_FMT_NV12MT v4l2_fourcc('T', 'M', '1', '2') /* 12 Y/CbCr
> >> 4:2:0 64x32 tiles */
> >> --
> >> 2.37.1
> >>
> >
> >For the other parts look's good to me.
> >Reviewed-by: Tommaso Merciai <tommaso.merciai@...rulasolutions.com>
> >
> >Regards,
> >Tommaso
> >
> >--
> >Tommaso Merciai
> >Embedded Linux Engineer
> >tommaso.merciai@...rulasolutions.com
> >__________________________________
> >
> >Amarula Solutions SRL
> >Via Le Canevare 30, 31100 Treviso, Veneto, IT T. +39 042 243 5310
> >info@...rulasolutions.com
> >https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.am
> >arulasolutions.com%2F&data=05%7C01%7Cming.qian%40nxp.com%7Cb6
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> >%2B2Wkg%3D&reserved=0
--
Tommaso Merciai
Embedded Linux Engineer
tommaso.merciai@...rulasolutions.com
__________________________________
Amarula Solutions SRL
Via Le Canevare 30, 31100 Treviso, Veneto, IT
T. +39 042 243 5310
info@...rulasolutions.com
www.amarulasolutions.com
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