Merge branch 'for-viro' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi...

[deliverable/linux.git] / Documentation / media / uapi / v4l / pixfmt-yuv410.rst

.. -*- coding: utf-8; mode: rst -*-

.. _V4L2-PIX-FMT-YVU410:
.. _v4l2-pix-fmt-yuv410:

**********************************************************
V4L2_PIX_FMT_YVU410 ('YVU9'), V4L2_PIX_FMT_YUV410 ('YUV9')
**********************************************************

*man V4L2_PIX_FMT_YVU410(2)*

V4L2_PIX_FMT_YUV410
Planar formats with ¼ horizontal and vertical chroma resolution, also
known as YUV 4:1:0


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

These are planar formats, as opposed to a packed format. The three
components are separated into three sub-images or planes. The Y plane is
first. The Y plane has one byte per pixel. For ``V4L2_PIX_FMT_YVU410``,
the Cr plane immediately follows the Y plane in memory. The Cr plane is
¼ the width and ¼ the height of the Y plane (and of the image). Each Cr
belongs to 16 pixels, a four-by-four square of the image. Following the
Cr plane is the Cb plane, just like the Cr plane.
``V4L2_PIX_FMT_YUV410`` is the same, except the Cb plane comes first,
then the Cr plane.

If the Y plane has pad bytes after each row, then the Cr and Cb planes
have ¼ as many pad bytes after their rows. In other words, four Cx rows
(including padding) are exactly as long as one Y row (including
padding).

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



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


    -  .. row 1

       -  start + 0:

       -  Y'\ :sub:`00`

       -  Y'\ :sub:`01`

       -  Y'\ :sub:`02`

       -  Y'\ :sub:`03`

    -  .. row 2

       -  start + 4:

       -  Y'\ :sub:`10`

       -  Y'\ :sub:`11`

       -  Y'\ :sub:`12`

       -  Y'\ :sub:`13`

    -  .. row 3

       -  start + 8:

       -  Y'\ :sub:`20`

       -  Y'\ :sub:`21`

       -  Y'\ :sub:`22`

       -  Y'\ :sub:`23`

    -  .. row 4

       -  start + 12:

       -  Y'\ :sub:`30`

       -  Y'\ :sub:`31`

       -  Y'\ :sub:`32`

       -  Y'\ :sub:`33`

    -  .. row 5

       -  start + 16:

       -  Cr\ :sub:`00`

    -  .. row 6

       -  start + 17:

       -  Cb\ :sub:`00`


**Color Sample Location..**



.. flat-table::
    :header-rows:  0
    :stub-columns: 0


    -  .. row 1

       -
       -  0

       -
       -  1

       -
       -  2

       -
       -  3

    -  .. row 2

       -  0

       -  Y

       -
       -  Y

       -
       -  Y

       -
       -  Y

    -  .. row 3

       -

    -  .. row 4

       -  1

       -  Y

       -
       -  Y

       -
       -  Y

       -
       -  Y

    -  .. row 5

       -
       -
       -
       -
       -  C

       -
       -
       -

    -  .. row 6

       -  2

       -  Y

       -
       -  Y

       -
       -  Y

       -
       -  Y

    -  .. row 7

       -

    -  .. row 8

       -  3

       -  Y

       -
       -  Y

       -
       -  Y

       -
       -  Y