tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
2
3.. _packed-hsv:
4
5******************
6Packed HSV formats
7******************
8
9Description
10===========
11
12The *hue* (h) is measured in degrees, the equivalence between degrees and LSBs
13depends on the hsv-encoding used, see :ref:`colorspaces`.
14The *saturation* (s) and the *value* (v) are measured in percentage of the
15cylinder: 0 being the smallest value and 255 the maximum.
16
17
18The values are packed in 24 or 32 bit formats.
19
20
21.. raw:: latex
22
23 \begingroup
24 \tiny
25 \setlength{\tabcolsep}{2pt}
26
27.. tabularcolumns:: |p{2.6cm}|p{0.8cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|p{0.22cm}|
28
29.. _packed-hsv-formats:
30
31.. flat-table:: Packed HSV Image Formats
32 :header-rows: 2
33 :stub-columns: 0
34
35 * - Identifier
36 - Code
37 -
38 - :cspan:`7` Byte 0 in memory
39 - :cspan:`7` Byte 1
40 - :cspan:`7` Byte 2
41 - :cspan:`7` Byte 3
42 * -
43 -
44 - Bit
45 - 7
46 - 6
47 - 5
48 - 4
49 - 3
50 - 2
51 - 1
52 - 0
53
54 - 7
55 - 6
56 - 5
57 - 4
58 - 3
59 - 2
60 - 1
61 - 0
62
63 - 7
64 - 6
65 - 5
66 - 4
67 - 3
68 - 2
69 - 1
70 - 0
71
72 - 7
73 - 6
74 - 5
75 - 4
76 - 3
77 - 2
78 - 1
79 - 0
80 * .. _V4L2-PIX-FMT-HSV32:
81
82 - ``V4L2_PIX_FMT_HSV32``
83 - 'HSV4'
84 -
85 -
86 -
87 -
88 -
89 -
90 -
91 -
92 -
93
94 - h\ :sub:`7`
95 - h\ :sub:`6`
96 - h\ :sub:`5`
97 - h\ :sub:`4`
98 - h\ :sub:`3`
99 - h\ :sub:`2`
100 - h\ :sub:`1`
101 - h\ :sub:`0`
102
103 - s\ :sub:`7`
104 - s\ :sub:`6`
105 - s\ :sub:`5`
106 - s\ :sub:`4`
107 - s\ :sub:`3`
108 - s\ :sub:`2`
109 - s\ :sub:`1`
110 - s\ :sub:`0`
111
112 - v\ :sub:`7`
113 - v\ :sub:`6`
114 - v\ :sub:`5`
115 - v\ :sub:`4`
116 - v\ :sub:`3`
117 - v\ :sub:`2`
118 - v\ :sub:`1`
119 - v\ :sub:`0`
120 * .. _V4L2-PIX-FMT-HSV24:
121
122 - ``V4L2_PIX_FMT_HSV24``
123 - 'HSV3'
124 -
125 - h\ :sub:`7`
126 - h\ :sub:`6`
127 - h\ :sub:`5`
128 - h\ :sub:`4`
129 - h\ :sub:`3`
130 - h\ :sub:`2`
131 - h\ :sub:`1`
132 - h\ :sub:`0`
133
134 - s\ :sub:`7`
135 - s\ :sub:`6`
136 - s\ :sub:`5`
137 - s\ :sub:`4`
138 - s\ :sub:`3`
139 - s\ :sub:`2`
140 - s\ :sub:`1`
141 - s\ :sub:`0`
142
143 - v\ :sub:`7`
144 - v\ :sub:`6`
145 - v\ :sub:`5`
146 - v\ :sub:`4`
147 - v\ :sub:`3`
148 - v\ :sub:`2`
149 - v\ :sub:`1`
150 - v\ :sub:`0`
151 -
152
153.. raw:: latex
154
155 \endgroup
156
157Bit 7 is the most significant bit.