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.. -*- coding: utf-8; mode: rst -*-
.. _V4L2-PIX-FMT-NV24:
.. _V4L2-PIX-FMT-NV42:
******************************************************
V4L2_PIX_FMT_NV24 ('NV24'), V4L2_PIX_FMT_NV42 ('NV42')
******************************************************
*man V4L2_PIX_FMT_NV24(2)*
V4L2_PIX_FMT_NV42
Formats with full horizontal and vertical chroma resolutions, also known
as YUV 4:4:4. One luminance and one chrominance plane with alternating
chroma samples as opposed to ``V4L2_PIX_FMT_YVU420``
Description
===========
These are two-plane versions of the YUV 4:4:4 format. The three
components are separated into two sub-images or planes. The Y plane is
first, with each Y sample stored in one byte per pixel. For
``V4L2_PIX_FMT_NV24``, a combined CbCr plane immediately follows the Y
plane in memory. The CbCr plane has the same width and height, in
pixels, as the Y plane (and the image). Each line contains one CbCr pair
per pixel, with each Cb and Cr sample stored in one byte.
``V4L2_PIX_FMT_NV42`` is the same except that the Cb and Cr samples are
swapped, the CrCb plane starts with a Cr sample.
If the Y plane has pad bytes after each row, then the CbCr plane has
twice as many pad bytes after its rows.
**Byte Order.**
Each cell is one byte.
.. flat-table::
:header-rows: 0
:stub-columns: 0
:widths: 2 1 1 1 1 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:
- Cb\ :sub:`00`
- Cr\ :sub:`00`
- Cb\ :sub:`01`
- Cr\ :sub:`01`
- Cb\ :sub:`02`
- Cr\ :sub:`02`
- Cb\ :sub:`03`
- Cr\ :sub:`03`
- .. row 6
- start + 24:
- Cb\ :sub:`10`
- Cr\ :sub:`10`
- Cb\ :sub:`11`
- Cr\ :sub:`11`
- Cb\ :sub:`12`
- Cr\ :sub:`12`
- Cb\ :sub:`13`
- Cr\ :sub:`13`
- .. row 7
- start + 32:
- Cb\ :sub:`20`
- Cr\ :sub:`20`
- Cb\ :sub:`21`
- Cr\ :sub:`21`
- Cb\ :sub:`22`
- Cr\ :sub:`22`
- Cb\ :sub:`23`
- Cr\ :sub:`23`
- .. row 8
- start + 40:
- Cb\ :sub:`30`
- Cr\ :sub:`30`
- Cb\ :sub:`31`
- Cr\ :sub:`31`
- Cb\ :sub:`32`
- Cr\ :sub:`32`
- Cb\ :sub:`33`
- Cr\ :sub:`33`
|
