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.. -*- 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
|
