1.. Permission is granted to copy, distribute and/or modify this
2.. document under the terms of the GNU Free Documentation License,
3.. Version 1.1 or any later version published by the Free Software
4.. Foundation, with no Invariant Sections, no Front-Cover Texts
5.. and no Back-Cover Texts. A copy of the license is included at
6.. Documentation/media/uapi/fdl-appendix.rst.
7..
8.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
9
10.. _V4L2-PIX-FMT-NV24:
11.. _V4L2-PIX-FMT-NV42:
12
13******************************************************
14V4L2_PIX_FMT_NV24 ('NV24'), V4L2_PIX_FMT_NV42 ('NV42')
15******************************************************
16
17V4L2_PIX_FMT_NV42
18Formats with full horizontal and vertical chroma resolutions, also known
19as YUV 4:4:4. One luminance and one chrominance plane with alternating
20chroma samples as opposed to ``V4L2_PIX_FMT_YVU420``
21
22
23Description
24===========
25
26These are two-plane versions of the YUV 4:4:4 format. The three
27components are separated into two sub-images or planes. The Y plane is
28first, with each Y sample stored in one byte per pixel. For
29``V4L2_PIX_FMT_NV24``, a combined CbCr plane immediately follows the Y
30plane in memory. The CbCr plane has the same width and height, in
31pixels, as the Y plane (and the image). Each line contains one CbCr pair
32per pixel, with each Cb and Cr sample stored in one byte.
33``V4L2_PIX_FMT_NV42`` is the same except that the Cb and Cr samples are
34swapped, the CrCb plane starts with a Cr sample.
35
36If the Y plane has pad bytes after each row, then the CbCr plane has
37twice as many pad bytes after its rows.
38
39**Byte Order.**
40Each cell is one byte.
41
42
43.. flat-table::
44    :header-rows:  0
45    :stub-columns: 0
46
47    * - start + 0:
48      - Y'\ :sub:`00`
49      - Y'\ :sub:`01`
50      - Y'\ :sub:`02`
51      - Y'\ :sub:`03`
52    * - start + 4:
53      - Y'\ :sub:`10`
54      - Y'\ :sub:`11`
55      - Y'\ :sub:`12`
56      - Y'\ :sub:`13`
57    * - start + 8:
58      - Y'\ :sub:`20`
59      - Y'\ :sub:`21`
60      - Y'\ :sub:`22`
61      - Y'\ :sub:`23`
62    * - start + 12:
63      - Y'\ :sub:`30`
64      - Y'\ :sub:`31`
65      - Y'\ :sub:`32`
66      - Y'\ :sub:`33`
67    * - start + 16:
68      - Cb\ :sub:`00`
69      - Cr\ :sub:`00`
70      - Cb\ :sub:`01`
71      - Cr\ :sub:`01`
72      - Cb\ :sub:`02`
73      - Cr\ :sub:`02`
74      - Cb\ :sub:`03`
75      - Cr\ :sub:`03`
76    * - start + 24:
77      - Cb\ :sub:`10`
78      - Cr\ :sub:`10`
79      - Cb\ :sub:`11`
80      - Cr\ :sub:`11`
81      - Cb\ :sub:`12`
82      - Cr\ :sub:`12`
83      - Cb\ :sub:`13`
84      - Cr\ :sub:`13`
85    * - start + 32:
86      - Cb\ :sub:`20`
87      - Cr\ :sub:`20`
88      - Cb\ :sub:`21`
89      - Cr\ :sub:`21`
90      - Cb\ :sub:`22`
91      - Cr\ :sub:`22`
92      - Cb\ :sub:`23`
93      - Cr\ :sub:`23`
94    * - start + 40:
95      - Cb\ :sub:`30`
96      - Cr\ :sub:`30`
97      - Cb\ :sub:`31`
98      - Cr\ :sub:`31`
99      - Cb\ :sub:`32`
100      - Cr\ :sub:`32`
101      - Cb\ :sub:`33`
102      - Cr\ :sub:`33`
103