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Packed HSV formats

Documentation/userspace-api/media/v4l/pixfmt-packed-hsv.rst

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.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. c:namespace:: V4L

.. _packed-hsv:


Packed HSV formats


Description

The hue (h) is measured in degrees, the equivalence between degrees and LSBs depends on the hsv-encoding used, see :ref:colorspaces. The saturation (s) and the value (v) are measured in percentage of the cylinder: 0 being the smallest value and 255 the maximum.

The values are packed in 24 or 32 bit formats.

.. raw:: latex

\begingroup
\tiny
\setlength{\tabcolsep}{2pt}

.. tabularcolumns:: |p{2.6cm}|p{0.8cm}|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}|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}|p{0.22cm}|

.. _packed-hsv-formats:

.. flat-table:: Packed HSV Image Formats :header-rows: 2 :stub-columns: 0

* - Identifier
  - Code
  -
  - :cspan:`7` Byte 0 in memory
  - :cspan:`7` Byte 1
  - :cspan:`7` Byte 2
  - :cspan:`7` Byte 3
* -
  -
  - Bit
  - 7
  - 6
  - 5
  - 4
  - 3
  - 2
  - 1
  - 0

  - 7
  - 6
  - 5
  - 4
  - 3
  - 2
  - 1
  - 0

  - 7
  - 6
  - 5
  - 4
  - 3
  - 2
  - 1
  - 0

  - 7
  - 6
  - 5
  - 4
  - 3
  - 2
  - 1
  - 0
* .. _V4L2-PIX-FMT-HSV32:

  - ``V4L2_PIX_FMT_HSV32``
  - 'HSV4'
  -
  -
  -
  -
  -
  -
  -
  -
  -

  - h\ :sub:`7`
  - h\ :sub:`6`
  - h\ :sub:`5`
  - h\ :sub:`4`
  - h\ :sub:`3`
  - h\ :sub:`2`
  - h\ :sub:`1`
  - h\ :sub:`0`

  - s\ :sub:`7`
  - s\ :sub:`6`
  - s\ :sub:`5`
  - s\ :sub:`4`
  - s\ :sub:`3`
  - s\ :sub:`2`
  - s\ :sub:`1`
  - s\ :sub:`0`

  - v\ :sub:`7`
  - v\ :sub:`6`
  - v\ :sub:`5`
  - v\ :sub:`4`
  - v\ :sub:`3`
  - v\ :sub:`2`
  - v\ :sub:`1`
  - v\ :sub:`0`
* .. _V4L2-PIX-FMT-HSV24:

  - ``V4L2_PIX_FMT_HSV24``
  - 'HSV3'
  -
  - h\ :sub:`7`
  - h\ :sub:`6`
  - h\ :sub:`5`
  - h\ :sub:`4`
  - h\ :sub:`3`
  - h\ :sub:`2`
  - h\ :sub:`1`
  - h\ :sub:`0`

  - s\ :sub:`7`
  - s\ :sub:`6`
  - s\ :sub:`5`
  - s\ :sub:`4`
  - s\ :sub:`3`
  - s\ :sub:`2`
  - s\ :sub:`1`
  - s\ :sub:`0`

  - v\ :sub:`7`
  - v\ :sub:`6`
  - v\ :sub:`5`
  - v\ :sub:`4`
  - v\ :sub:`3`
  - v\ :sub:`2`
  - v\ :sub:`1`
  - v\ :sub:`0`
  -

.. raw:: latex

\endgroup

Bit 7 is the most significant bit.