xref: /openbmc/linux/Documentation/userspace-api/media/v4l/pixfmt-srggb12p.rst (revision 8be98d2f2a0a262f8bf8a0bc1fdf522b3c7aab17)

.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later

.. _V4L2-PIX-FMT-SRGGB12P:
.. _v4l2-pix-fmt-sbggr12p:
.. _v4l2-pix-fmt-sgbrg12p:
.. _v4l2-pix-fmt-sgrbg12p:

*******************************************************************************************************************************
V4L2_PIX_FMT_SRGGB12P ('pRCC'), V4L2_PIX_FMT_SGRBG12P ('pgCC'), V4L2_PIX_FMT_SGBRG12P ('pGCC'), V4L2_PIX_FMT_SBGGR12P ('pBCC'),
*******************************************************************************************************************************


12-bit packed Bayer formats
---------------------------


Description
===========

These four pixel formats are packed raw sRGB / Bayer formats with 12
bits per colour. Every two consecutive samples are packed into three
bytes. Each of the first two bytes contain the 8 high order bits of
the pixels, and the third byte contains the four least significants
bits of each pixel, in the same order.

Each n-pixel row contains n/2 green samples and n/2 blue or red
samples, with alternating green-red and green-blue rows. They are
conventionally described as GRGR... BGBG..., RGRG... GBGB..., etc.
Below is an example of a small V4L2_PIX_FMT_SBGGR12P image:

**Byte Order.**
Each cell is one byte.

.. tabularcolumns:: |p{2.2cm}|p{1.2cm}|p{1.2cm}|p{3.1cm}|p{1.2cm}|p{1.2cm}|p{6.4cm}|


.. flat-table::
    :header-rows:  0
    :stub-columns: 0
    :widths:       2 1 1 1 1 1 1


    -  -  start + 0:
       -  B\ :sub:`00high`
       -  G\ :sub:`01high`
       -  G\ :sub:`01low`\ (bits 7--4)

          B\ :sub:`00low`\ (bits 3--0)
       -  B\ :sub:`02high`
       -  G\ :sub:`03high`
       -  G\ :sub:`03low`\ (bits 7--4)

          B\ :sub:`02low`\ (bits 3--0)

    -  -  start + 6:
       -  G\ :sub:`10high`
       -  R\ :sub:`11high`
       -  R\ :sub:`11low`\ (bits 7--4)

          G\ :sub:`10low`\ (bits 3--0)
       -  G\ :sub:`12high`
       -  R\ :sub:`13high`
       -  R\ :sub:`13low`\ (bits 3--2)

          G\ :sub:`12low`\ (bits 3--0)
    -  -  start + 12:
       -  B\ :sub:`20high`
       -  G\ :sub:`21high`
       -  G\ :sub:`21low`\ (bits 7--4)

          B\ :sub:`20low`\ (bits 3--0)
       -  B\ :sub:`22high`
       -  G\ :sub:`23high`
       -  G\ :sub:`23low`\ (bits 7--4)

          B\ :sub:`22low`\ (bits 3--0)
    -  -  start + 18:
       -  G\ :sub:`30high`
       -  R\ :sub:`31high`
       -  R\ :sub:`31low`\ (bits 7--4)

          G\ :sub:`30low`\ (bits 3--0)
       -  G\ :sub:`32high`
       -  R\ :sub:`33high`
       -  R\ :sub:`33low`\ (bits 3--2)

          G\ :sub:`32low`\ (bits 3--0)