54f38fcae5
Since 2017, there is an space reserved for userspace API,
created by changeset 1d596dee3862 ("docs: Create a user-space API guide").
As the media subsystem was one of the first subsystems to use
Sphinx, until this patch, we were keeping things on a separate
place.
Let's just use the new location, as having all uAPI altogether
will likely make things easier for developers.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
95 lines
2.9 KiB
ReStructuredText
95 lines
2.9 KiB
ReStructuredText
.. Permission is granted to copy, distribute and/or modify this
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.. document under the terms of the GNU Free Documentation License,
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.. Version 1.1 or any later version published by the Free Software
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.. Foundation, with no Invariant Sections, no Front-Cover Texts
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.. and no Back-Cover Texts. A copy of the license is included at
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.. Documentation/userspace-api/media/fdl-appendix.rst.
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..
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.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
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.. _V4L2-PIX-FMT-SRGGB12P:
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.. _v4l2-pix-fmt-sbggr12p:
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.. _v4l2-pix-fmt-sgbrg12p:
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.. _v4l2-pix-fmt-sgrbg12p:
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*******************************************************************************************************************************
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V4L2_PIX_FMT_SRGGB12P ('pRCC'), V4L2_PIX_FMT_SGRBG12P ('pgCC'), V4L2_PIX_FMT_SGBRG12P ('pGCC'), V4L2_PIX_FMT_SBGGR12P ('pBCC'),
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*******************************************************************************************************************************
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12-bit packed Bayer formats
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---------------------------
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Description
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===========
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These four pixel formats are packed raw sRGB / Bayer formats with 12
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bits per colour. Every two consecutive samples are packed into three
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bytes. Each of the first two bytes contain the 8 high order bits of
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the pixels, and the third byte contains the four least significants
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bits of each pixel, in the same order.
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Each n-pixel row contains n/2 green samples and n/2 blue or red
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samples, with alternating green-red and green-blue rows. They are
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conventionally described as GRGR... BGBG..., RGRG... GBGB..., etc.
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Below is an example of a small V4L2_PIX_FMT_SBGGR12P image:
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**Byte Order.**
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Each cell is one byte.
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.. tabularcolumns:: |p{2.2cm}|p{1.2cm}|p{1.2cm}|p{3.1cm}|p{1.2cm}|p{1.2cm}|p{3.1cm}|
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.. flat-table::
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:header-rows: 0
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:stub-columns: 0
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:widths: 2 1 1 1 1 1 1
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- - start + 0:
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- B\ :sub:`00high`
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- G\ :sub:`01high`
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- G\ :sub:`01low`\ (bits 7--4)
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B\ :sub:`00low`\ (bits 3--0)
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- B\ :sub:`02high`
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- G\ :sub:`03high`
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- G\ :sub:`03low`\ (bits 7--4)
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B\ :sub:`02low`\ (bits 3--0)
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- - start + 6:
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- G\ :sub:`10high`
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- R\ :sub:`11high`
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- R\ :sub:`11low`\ (bits 7--4)
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G\ :sub:`10low`\ (bits 3--0)
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- G\ :sub:`12high`
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- R\ :sub:`13high`
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- R\ :sub:`13low`\ (bits 3--2)
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G\ :sub:`12low`\ (bits 3--0)
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- - start + 12:
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- B\ :sub:`20high`
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- G\ :sub:`21high`
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- G\ :sub:`21low`\ (bits 7--4)
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B\ :sub:`20low`\ (bits 3--0)
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- B\ :sub:`22high`
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- G\ :sub:`23high`
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- G\ :sub:`23low`\ (bits 7--4)
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B\ :sub:`22low`\ (bits 3--0)
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- - start + 18:
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- G\ :sub:`30high`
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- R\ :sub:`31high`
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- R\ :sub:`31low`\ (bits 7--4)
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G\ :sub:`30low`\ (bits 3--0)
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- G\ :sub:`32high`
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- R\ :sub:`33high`
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- R\ :sub:`33low`\ (bits 3--2)
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G\ :sub:`32low`\ (bits 3--0)
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