blob: cf8e4dfbfbd41df077d7aeaa9f3c0ff8b985fa36 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. _yuv-luma-only:
*****************
Luma-Only Formats
*****************
This family of formats only store the luma component of a Y'CbCr image. They
are often referred to as greyscale formats.
.. note::
- In all the tables that follow, bit 7 is the most significant bit in a byte.
- Formats are described with the minimum number of pixels needed to create a
byte-aligned repeating pattern. `...` indicates repetition of the pattern.
- Y'\ :sub:`x`\ [9:2] denotes bits 9 to 2 of the Y' value for pixel at column
`x`.
- `0` denotes padding bits set to 0.
.. raw:: latex
\scriptsize
.. tabularcolumns:: |p{3.6cm}|p{3.0cm}|p{1.3cm}|p{2.6cm}|p{1.3cm}|p{1.3cm}|p{1.3cm}|
.. flat-table:: Luma-Only Image Formats
:header-rows: 1
:stub-columns: 0
* - Identifier
- Code
- Byte 0
- Byte 1
- Byte 2
- Byte 3
- Byte 4
* .. _V4L2-PIX-FMT-GREY:
- ``V4L2_PIX_FMT_GREY``
- 'GREY'
- Y'\ :sub:`0`\ [7:0]
- ...
- ...
- ...
- ...
* .. _V4L2-PIX-FMT-IPU3-Y10:
- ``V4L2_PIX_FMT_IPU3_Y10``
- 'ip3y'
- Y'\ :sub:`0`\ [7:0]
- Y'\ :sub:`1`\ [5:0] Y'\ :sub:`0`\ [9:8]
- Y'\ :sub:`2`\ [3:0] Y'\ :sub:`1`\ [9:6]
- Y'\ :sub:`3`\ [1:0] Y'\ :sub:`2`\ [9:4]
- Y'\ :sub:`3`\ [9:2]
* .. _V4L2-PIX-FMT-Y10:
- ``V4L2_PIX_FMT_Y10``
- 'Y10 '
- Y'\ :sub:`0`\ [7:0]
- `000000` Y'\ :sub:`0`\ [9:8]
- ...
- ...
- ...
* .. _V4L2-PIX-FMT-Y10BPACK:
- ``V4L2_PIX_FMT_Y10BPACK``
- 'Y10B'
- Y'\ :sub:`0`\ [9:2]
- Y'\ :sub:`0`\ [1:0] Y'\ :sub:`1`\ [9:4]
- Y'\ :sub:`1`\ [3:0] Y'\ :sub:`2`\ [9:6]
- Y'\ :sub:`2`\ [5:0] Y'\ :sub:`3`\ [9:8]
- Y'\ :sub:`3`\ [7:0]
* .. _V4L2-PIX-FMT-Y10P:
- ``V4L2_PIX_FMT_Y10P``
- 'Y10P'
- Y'\ :sub:`0`\ [9:2]
- Y'\ :sub:`1`\ [9:2]
- Y'\ :sub:`2`\ [9:2]
- Y'\ :sub:`3`\ [9:2]
- Y'\ :sub:`3`\ [1:0] Y'\ :sub:`2`\ [1:0] Y'\ :sub:`1`\ [1:0] Y'\ :sub:`0`\ [1:0]
* .. _V4L2-PIX-FMT-Y12:
- ``V4L2_PIX_FMT_Y12``
- 'Y12 '
- Y'\ :sub:`0`\ [7:0]
- `0000` Y'\ :sub:`0`\ [11:8]
- ...
- ...
- ...
* .. _V4L2-PIX-FMT-Y012:
- ``V4L2_PIX_FMT_Y012``
- 'Y012'
- Y'\ :sub:`0`\ [3:0] `0000`
- Y'\ :sub:`0`\ [11:4]
- ...
- ...
- ...
* .. _V4L2-PIX-FMT-Y14:
- ``V4L2_PIX_FMT_Y14``
- 'Y14 '
- Y'\ :sub:`0`\ [7:0]
- `00` Y'\ :sub:`0`\ [13:8]
- ...
- ...
- ...
* .. _V4L2-PIX-FMT-Y16:
- ``V4L2_PIX_FMT_Y16``
- 'Y16 '
- Y'\ :sub:`0`\ [7:0]
- Y'\ :sub:`0`\ [15:8]
- ...
- ...
- ...
* .. _V4L2-PIX-FMT-Y16-BE:
- ``V4L2_PIX_FMT_Y16_BE``
- 'Y16 ' | (1U << 31)
- Y'\ :sub:`0`\ [15:8]
- Y'\ :sub:`0`\ [7:0]
- ...
- ...
- ...
.. raw:: latex
\normalsize
.. note::
For the Y16 and Y16_BE formats, the actual sampling precision may be lower
than 16 bits. For example, 10 bits per pixel uses values in the range 0 to
1023. For the IPU3_Y10 format 25 pixels are packed into 32 bytes, which
leaves the 6 most significant bits of the last byte padded with 0.
For Y012 and Y12 formats, Y012 places its data in the 12 high bits, with
padding zeros in the 4 low bits, in contrast to the Y12 format, which has
its padding located in the most significant bits of the 16 bit word.
|
