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Message-ID: <e81bd766-fa5b-ba79-69e3-ef6b88a0da79@collabora.com>
Date: Mon, 28 Jun 2021 15:37:34 +0200
From: Benjamin Gaignard <benjamin.gaignard@...labora.com>
To: Nicolas Dufresne <nicolas@...fresne.ca>, hverkuil@...all.nl,
ezequiel@...labora.com, p.zabel@...gutronix.de, mchehab@...nel.org,
shawnguo@...nel.org, s.hauer@...gutronix.de, festevam@...il.com,
gregkh@...uxfoundation.org, mripard@...nel.org,
paul.kocialkowski@...tlin.com, wens@...e.org,
jernej.skrabec@...l.net, emil.l.velikov@...il.com,
andrzej.p@...labora.com, jc@...esim.co.uk, jernej.skrabec@...il.com
Cc: kernel@...gutronix.de, linux-imx@....com,
linux-media@...r.kernel.org, linux-rockchip@...ts.infradead.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 4/8] media: Add P010 video format
Le 25/06/2021 à 21:33, Nicolas Dufresne a écrit :
> Le vendredi 18 juin 2021 à 15:15 +0200, Benjamin Gaignard a écrit :
>> P010 is a YUV format with 10-bits per pixel with interleaved UV.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...labora.com>
> Acked-by: Nicolas Dufresne <nicolas.dufresne@...labora.com>
Hi Nicolas,
Thanks for the ack and, since it is the same patch, we could applied on v4 serie.
Benjamin
>> ---
>> version 2:
>> - Add documentation about P010 padding
>> - Fix the number of bits per component (16)
>>
>> .../media/v4l/pixfmt-yuv-planar.rst | 78 ++++++++++++++++++-
>> drivers/media/v4l2-core/v4l2-common.c | 1 +
>> drivers/media/v4l2-core/v4l2-ioctl.c | 1 +
>> include/uapi/linux/videodev2.h | 1 +
>> 4 files changed, 79 insertions(+), 2 deletions(-)
>>
>> diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst
>> index 090c091affd2..af400d37c8fd 100644
>> --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst
>> +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst
>> @@ -100,8 +100,13 @@ All components are stored with the same number of bits per component.
>> - Cb, Cr
>> - No
>> - 64x32 macroblocks
>> -
>> - Horizontal Z order
>> + * - V4L2_PIX_FMT_P010
>> + - 'P010'
>> + - 16
>> + - 4:2:0
>> + - Cb, Cr
>> + - No
>> + - Linear
>> * - V4L2_PIX_FMT_NV12MT_16X16
>> - 'VM12'
>> - 8
>> @@ -171,6 +176,7 @@ horizontally.
>> .. _V4L2-PIX-FMT-NV21:
>> .. _V4L2-PIX-FMT-NV12M:
>> .. _V4L2-PIX-FMT-NV21M:
>> +.. _V4L2-PIX-FMT-P010:
>>
>> NV12, NV21, NV12M and NV21M
>> ---------------------------
>> @@ -470,6 +476,74 @@ number of lines as the luma plane.
>> - Cb\ :sub:`33`
>> - Cr\ :sub:`33`
>>
>> +.. _V4L2_PIX_FMT_P010:
>> +
>> +P010
>> +----
>> +
>> +The number of bytes in one luminance row must be divisible by 16,
>> +which means there will be padded 0 in the right edge when necessary.
>> +
>> +.. raw:: latex
>> +
>> + \begingroup
>> + \small
>> + \setlength{\tabcolsep}{2pt}
>> +
>> +.. tabularcolumns:: |p{2.6cm}|p{0.70cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|
>> +
>> +.. flat-table:: P010 16 Bits per component
>> + :header-rows: 2
>> + :stub-columns: 0
>> +
>> + * - Identifier
>> + - Code
>> + - :cspan:`7` Byte 0 in memory
>> +
>> + - :cspan:`7` Byte 1
>> + * -
>> + -
>> + - 7
>> + - 6
>> + - 5
>> + - 4
>> + - 3
>> + - 2
>> + - 1
>> + - 0
>> +
>> + - 7
>> + - 6
>> + - 5
>> + - 4
>> + - 3
>> + - 2
>> + - 1
>> + - 0
>> + * - ``V4L2_PIX_FMT_P010``
>> + - 'P010'
>> +
>> + - Y\ :sub:`9`
>> + - Y\ :sub:`8`
>> + - Y\ :sub:`7`
>> + - Y\ :sub:`6`
>> + - Y\ :sub:`5`
>> + - Y\ :sub:`4`
>> + - Y\ :sub:`3`
>> + - Y\ :sub:`2`
>> +
>> + - Y\ :sub:`1`
>> + - Y\ :sub:`0`
>> + - 0
>> + - 0
>> + - 0
>> + - 0
>> + - 0
>> + - 0
>> +
>> +.. raw:: latex
>> +
>> + \endgroup
>>
>> Fully Planar YUV Formats
>> ========================
>> diff --git a/drivers/media/v4l2-core/v4l2-common.c b/drivers/media/v4l2-core/v4l2-common.c
>> index 04af03285a20..37b5d82359dd 100644
>> --- a/drivers/media/v4l2-core/v4l2-common.c
>> +++ b/drivers/media/v4l2-core/v4l2-common.c
>> @@ -266,6 +266,7 @@ const struct v4l2_format_info *v4l2_format_info(u32 format)
>> { .format = V4L2_PIX_FMT_NV61, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .hdiv = 2, .vdiv = 1 },
>> { .format = V4L2_PIX_FMT_NV24, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .hdiv = 1, .vdiv = 1 },
>> { .format = V4L2_PIX_FMT_NV42, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .hdiv = 1, .vdiv = 1 },
>> + { .format = V4L2_PIX_FMT_P010, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 2, 2, 0, 0 }, .hdiv = 2, .vdiv = 1 },
>>
>> { .format = V4L2_PIX_FMT_YUV410, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 3, .bpp = { 1, 1, 1, 0 }, .hdiv = 4, .vdiv = 4 },
>> { .format = V4L2_PIX_FMT_YVU410, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 3, .bpp = { 1, 1, 1, 0 }, .hdiv = 4, .vdiv = 4 },
>> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
>> index 2673f51aafa4..6404d5b6e350 100644
>> --- a/drivers/media/v4l2-core/v4l2-ioctl.c
>> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
>> @@ -1282,6 +1282,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
>> case V4L2_PIX_FMT_NV61: descr = "Y/CrCb 4:2:2"; break;
>> case V4L2_PIX_FMT_NV24: descr = "Y/CbCr 4:4:4"; break;
>> case V4L2_PIX_FMT_NV42: descr = "Y/CrCb 4:4:4"; break;
>> + case V4L2_PIX_FMT_P010: descr = "10-bit Y/CrCb 4:2:0"; break;
>> case V4L2_PIX_FMT_NV12M: descr = "Y/CbCr 4:2:0 (N-C)"; break;
>> case V4L2_PIX_FMT_NV21M: descr = "Y/CrCb 4:2:0 (N-C)"; break;
>> case V4L2_PIX_FMT_NV16M: descr = "Y/CbCr 4:2:2 (N-C)"; break;
>> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
>> index 9260791b8438..e5f7acde0730 100644
>> --- a/include/uapi/linux/videodev2.h
>> +++ b/include/uapi/linux/videodev2.h
>> @@ -602,6 +602,7 @@ struct v4l2_pix_format {
>> #define V4L2_PIX_FMT_NV24 v4l2_fourcc('N', 'V', '2', '4') /* 24 Y/CbCr 4:4:4 */
>> #define V4L2_PIX_FMT_NV42 v4l2_fourcc('N', 'V', '4', '2') /* 24 Y/CrCb 4:4:4 */
>> #define V4L2_PIX_FMT_HM12 v4l2_fourcc('H', 'M', '1', '2') /* 8 YUV 4:2:0 16x16 macroblocks */
>> +#define V4L2_PIX_FMT_P010 v4l2_fourcc('P', '0', '1', '0') /* 15 Y/CbCr 4:2:0 10-bit per pixel*/
>>
>> /* two non contiguous planes - one Y, one Cr + Cb interleaved */
>> #define V4L2_PIX_FMT_NV12M v4l2_fourcc('N', 'M', '1', '2') /* 12 Y/CbCr 4:2:0 */
>
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