xref: /OK3568_Linux_fs/kernel/Documentation/userspace-api/media/v4l/pixfmt-srggb12p.rst (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1*4882a593Smuzhiyun.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
2*4882a593Smuzhiyun
3*4882a593Smuzhiyun.. _V4L2-PIX-FMT-SRGGB12P:
4*4882a593Smuzhiyun.. _v4l2-pix-fmt-sbggr12p:
5*4882a593Smuzhiyun.. _v4l2-pix-fmt-sgbrg12p:
6*4882a593Smuzhiyun.. _v4l2-pix-fmt-sgrbg12p:
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun*******************************************************************************************************************************
9*4882a593SmuzhiyunV4L2_PIX_FMT_SRGGB12P ('pRCC'), V4L2_PIX_FMT_SGRBG12P ('pgCC'), V4L2_PIX_FMT_SGBRG12P ('pGCC'), V4L2_PIX_FMT_SBGGR12P ('pBCC'),
10*4882a593Smuzhiyun*******************************************************************************************************************************
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun12-bit packed Bayer formats
14*4882a593Smuzhiyun---------------------------
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun
17*4882a593SmuzhiyunDescription
18*4882a593Smuzhiyun===========
19*4882a593Smuzhiyun
20*4882a593SmuzhiyunThese four pixel formats are packed raw sRGB / Bayer formats with 12
21*4882a593Smuzhiyunbits per colour. Every two consecutive samples are packed into three
22*4882a593Smuzhiyunbytes. Each of the first two bytes contain the 8 high order bits of
23*4882a593Smuzhiyunthe pixels, and the third byte contains the four least significants
24*4882a593Smuzhiyunbits of each pixel, in the same order.
25*4882a593Smuzhiyun
26*4882a593SmuzhiyunEach n-pixel row contains n/2 green samples and n/2 blue or red
27*4882a593Smuzhiyunsamples, with alternating green-red and green-blue rows. They are
28*4882a593Smuzhiyunconventionally described as GRGR... BGBG..., RGRG... GBGB..., etc.
29*4882a593SmuzhiyunBelow is an example of a small V4L2_PIX_FMT_SBGGR12P image:
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun**Byte Order.**
32*4882a593SmuzhiyunEach cell is one byte.
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun.. tabularcolumns:: |p{2.2cm}|p{1.2cm}|p{1.2cm}|p{3.1cm}|p{1.2cm}|p{1.2cm}|p{3.1cm}|
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun.. flat-table::
38*4882a593Smuzhiyun    :header-rows:  0
39*4882a593Smuzhiyun    :stub-columns: 0
40*4882a593Smuzhiyun    :widths:       2 1 1 1 1 1 1
41*4882a593Smuzhiyun
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun    -  -  start + 0:
44*4882a593Smuzhiyun       -  B\ :sub:`00high`
45*4882a593Smuzhiyun       -  G\ :sub:`01high`
46*4882a593Smuzhiyun       -  G\ :sub:`01low`\ (bits 7--4)
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun          B\ :sub:`00low`\ (bits 3--0)
49*4882a593Smuzhiyun       -  B\ :sub:`02high`
50*4882a593Smuzhiyun       -  G\ :sub:`03high`
51*4882a593Smuzhiyun       -  G\ :sub:`03low`\ (bits 7--4)
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun          B\ :sub:`02low`\ (bits 3--0)
54*4882a593Smuzhiyun
55*4882a593Smuzhiyun    -  -  start + 6:
56*4882a593Smuzhiyun       -  G\ :sub:`10high`
57*4882a593Smuzhiyun       -  R\ :sub:`11high`
58*4882a593Smuzhiyun       -  R\ :sub:`11low`\ (bits 7--4)
59*4882a593Smuzhiyun
60*4882a593Smuzhiyun          G\ :sub:`10low`\ (bits 3--0)
61*4882a593Smuzhiyun       -  G\ :sub:`12high`
62*4882a593Smuzhiyun       -  R\ :sub:`13high`
63*4882a593Smuzhiyun       -  R\ :sub:`13low`\ (bits 3--2)
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun          G\ :sub:`12low`\ (bits 3--0)
66*4882a593Smuzhiyun    -  -  start + 12:
67*4882a593Smuzhiyun       -  B\ :sub:`20high`
68*4882a593Smuzhiyun       -  G\ :sub:`21high`
69*4882a593Smuzhiyun       -  G\ :sub:`21low`\ (bits 7--4)
70*4882a593Smuzhiyun
71*4882a593Smuzhiyun          B\ :sub:`20low`\ (bits 3--0)
72*4882a593Smuzhiyun       -  B\ :sub:`22high`
73*4882a593Smuzhiyun       -  G\ :sub:`23high`
74*4882a593Smuzhiyun       -  G\ :sub:`23low`\ (bits 7--4)
75*4882a593Smuzhiyun
76*4882a593Smuzhiyun          B\ :sub:`22low`\ (bits 3--0)
77*4882a593Smuzhiyun    -  -  start + 18:
78*4882a593Smuzhiyun       -  G\ :sub:`30high`
79*4882a593Smuzhiyun       -  R\ :sub:`31high`
80*4882a593Smuzhiyun       -  R\ :sub:`31low`\ (bits 7--4)
81*4882a593Smuzhiyun
82*4882a593Smuzhiyun          G\ :sub:`30low`\ (bits 3--0)
83*4882a593Smuzhiyun       -  G\ :sub:`32high`
84*4882a593Smuzhiyun       -  R\ :sub:`33high`
85*4882a593Smuzhiyun       -  R\ :sub:`33low`\ (bits 3--2)
86*4882a593Smuzhiyun
87*4882a593Smuzhiyun          G\ :sub:`32low`\ (bits 3--0)
88