1 .. SPDX-License-Identifier: GFDL-1.1-no-invari 1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
2 2
3 .. _yuv-luma-only: 3 .. _yuv-luma-only:
4 4
5 ***************** 5 *****************
6 Luma-Only Formats 6 Luma-Only Formats
7 ***************** 7 *****************
8 8
9 This family of formats only store the luma com 9 This family of formats only store the luma component of a Y'CbCr image. They
10 are often referred to as greyscale formats. 10 are often referred to as greyscale formats.
11 11
12 .. note:: 12 .. note::
13 13
14 - In all the tables that follow, bit 7 is t 14 - In all the tables that follow, bit 7 is the most significant bit in a byte.
15 - Formats are described with the minimum nu 15 - Formats are described with the minimum number of pixels needed to create a
16 byte-aligned repeating pattern. `...` ind 16 byte-aligned repeating pattern. `...` indicates repetition of the pattern.
17 - Y'\ :sub:`x`\ [9:2] denotes bits 9 to 2 o 17 - Y'\ :sub:`x`\ [9:2] denotes bits 9 to 2 of the Y' value for pixel at column
18 `x`. 18 `x`.
19 - `0` denotes padding bits set to 0. 19 - `0` denotes padding bits set to 0.
20 20
21 21
22 .. raw:: latex 22 .. raw:: latex
23 23
24 \tiny 24 \tiny
25 25
26 .. tabularcolumns:: |p{3.6cm}|p{2.4cm}|p{1.3cm 26 .. tabularcolumns:: |p{3.6cm}|p{2.4cm}|p{1.3cm}|p{1.3cm}|p{1.3cm}|p{1.3cm}|p{1.3cm}|p{1.3cm}|p{1.3cm}|
27 27
28 .. flat-table:: Luma-Only Image Formats 28 .. flat-table:: Luma-Only Image Formats
29 :header-rows: 1 29 :header-rows: 1
30 :stub-columns: 0 30 :stub-columns: 0
31 31
32 * - Identifier 32 * - Identifier
33 - Code 33 - Code
34 - Byte 0 34 - Byte 0
35 - Byte 1 35 - Byte 1
36 - Byte 2 36 - Byte 2
37 - Byte 3 37 - Byte 3
38 - Byte 4 38 - Byte 4
39 - Byte 5 39 - Byte 5
40 - Byte 6 40 - Byte 6
41 41
42 * .. _V4L2-PIX-FMT-GREY: 42 * .. _V4L2-PIX-FMT-GREY:
43 43
44 - ``V4L2_PIX_FMT_GREY`` 44 - ``V4L2_PIX_FMT_GREY``
45 - 'GREY' 45 - 'GREY'
46 46
47 - Y'\ :sub:`0`\ [7:0] 47 - Y'\ :sub:`0`\ [7:0]
48 - ... 48 - ...
49 - ... 49 - ...
50 - ... 50 - ...
51 - ... 51 - ...
52 - ... 52 - ...
53 - ... 53 - ...
54 54
55 * .. _V4L2-PIX-FMT-IPU3-Y10: 55 * .. _V4L2-PIX-FMT-IPU3-Y10:
56 56
57 - ``V4L2_PIX_FMT_IPU3_Y10`` 57 - ``V4L2_PIX_FMT_IPU3_Y10``
58 - 'ip3y' 58 - 'ip3y'
59 59
60 - Y'\ :sub:`0`\ [7:0] 60 - Y'\ :sub:`0`\ [7:0]
61 - Y'\ :sub:`1`\ [5:0] Y'\ :sub:`0`\ [9:8 61 - Y'\ :sub:`1`\ [5:0] Y'\ :sub:`0`\ [9:8]
62 - Y'\ :sub:`2`\ [3:0] Y'\ :sub:`1`\ [9:6 62 - Y'\ :sub:`2`\ [3:0] Y'\ :sub:`1`\ [9:6]
63 - Y'\ :sub:`3`\ [1:0] Y'\ :sub:`2`\ [9:4 63 - Y'\ :sub:`3`\ [1:0] Y'\ :sub:`2`\ [9:4]
64 - Y'\ :sub:`3`\ [9:2] 64 - Y'\ :sub:`3`\ [9:2]
65 - ... 65 - ...
66 - ... 66 - ...
67 67
68 * .. _V4L2-PIX-FMT-Y10: 68 * .. _V4L2-PIX-FMT-Y10:
69 69
70 - ``V4L2_PIX_FMT_Y10`` 70 - ``V4L2_PIX_FMT_Y10``
71 - 'Y10 ' 71 - 'Y10 '
72 72
73 - Y'\ :sub:`0`\ [7:0] 73 - Y'\ :sub:`0`\ [7:0]
74 - `000000` Y'\ :sub:`0`\ [9:8] 74 - `000000` Y'\ :sub:`0`\ [9:8]
75 - ... 75 - ...
76 - ... 76 - ...
77 - ... 77 - ...
78 - ... 78 - ...
79 - ... 79 - ...
80 80
81 * .. _V4L2-PIX-FMT-Y10BPACK: 81 * .. _V4L2-PIX-FMT-Y10BPACK:
82 82
83 - ``V4L2_PIX_FMT_Y10BPACK`` 83 - ``V4L2_PIX_FMT_Y10BPACK``
84 - 'Y10B' 84 - 'Y10B'
85 85
86 - Y'\ :sub:`0`\ [9:2] 86 - Y'\ :sub:`0`\ [9:2]
87 - Y'\ :sub:`0`\ [1:0] Y'\ :sub:`1`\ [9:4 87 - Y'\ :sub:`0`\ [1:0] Y'\ :sub:`1`\ [9:4]
88 - Y'\ :sub:`1`\ [3:0] Y'\ :sub:`2`\ [9:6 88 - Y'\ :sub:`1`\ [3:0] Y'\ :sub:`2`\ [9:6]
89 - Y'\ :sub:`2`\ [5:0] Y'\ :sub:`3`\ [9:8 89 - Y'\ :sub:`2`\ [5:0] Y'\ :sub:`3`\ [9:8]
90 - Y'\ :sub:`3`\ [7:0] 90 - Y'\ :sub:`3`\ [7:0]
91 - ... 91 - ...
92 - ... 92 - ...
93 93
94 * .. _V4L2-PIX-FMT-Y10P: 94 * .. _V4L2-PIX-FMT-Y10P:
95 95
96 - ``V4L2_PIX_FMT_Y10P`` 96 - ``V4L2_PIX_FMT_Y10P``
97 - 'Y10P' 97 - 'Y10P'
98 98
99 - Y'\ :sub:`0`\ [9:2] 99 - Y'\ :sub:`0`\ [9:2]
100 - Y'\ :sub:`1`\ [9:2] 100 - Y'\ :sub:`1`\ [9:2]
101 - Y'\ :sub:`2`\ [9:2] 101 - Y'\ :sub:`2`\ [9:2]
102 - Y'\ :sub:`3`\ [9:2] 102 - Y'\ :sub:`3`\ [9:2]
103 - Y'\ :sub:`3`\ [1:0] Y'\ :sub:`2`\ [1:0 103 - Y'\ :sub:`3`\ [1:0] Y'\ :sub:`2`\ [1:0] Y'\ :sub:`1`\ [1:0] Y'\ :sub:`0`\ [1:0]
104 - ... 104 - ...
105 - ... 105 - ...
106 106
107 * .. _V4L2-PIX-FMT-Y12: 107 * .. _V4L2-PIX-FMT-Y12:
108 108
109 - ``V4L2_PIX_FMT_Y12`` 109 - ``V4L2_PIX_FMT_Y12``
110 - 'Y12 ' 110 - 'Y12 '
111 111
112 - Y'\ :sub:`0`\ [7:0] 112 - Y'\ :sub:`0`\ [7:0]
113 - `0000` Y'\ :sub:`0`\ [11:8] 113 - `0000` Y'\ :sub:`0`\ [11:8]
114 - ... 114 - ...
115 - ... 115 - ...
116 - ... 116 - ...
117 - ... 117 - ...
118 - ... 118 - ...
119 119
120 * .. _V4L2-PIX-FMT-Y012: 120 * .. _V4L2-PIX-FMT-Y012:
121 121
122 - ``V4L2_PIX_FMT_Y012`` 122 - ``V4L2_PIX_FMT_Y012``
123 - 'Y012' 123 - 'Y012'
124 124
125 - Y'\ :sub:`0`\ [3:0] `0000` 125 - Y'\ :sub:`0`\ [3:0] `0000`
126 - Y'\ :sub:`0`\ [11:4] 126 - Y'\ :sub:`0`\ [11:4]
127 - ... 127 - ...
128 - ... 128 - ...
129 - ... 129 - ...
130 - ... 130 - ...
131 - ... 131 - ...
132 132
133 * .. _V4L2-PIX-FMT-Y12P: 133 * .. _V4L2-PIX-FMT-Y12P:
134 134
135 - ``V4L2_PIX_FMT_Y12P`` 135 - ``V4L2_PIX_FMT_Y12P``
136 - 'Y12P' 136 - 'Y12P'
137 137
138 - Y'\ :sub:`0`\ [11:4] 138 - Y'\ :sub:`0`\ [11:4]
139 - Y'\ :sub:`1`\ [11:4] 139 - Y'\ :sub:`1`\ [11:4]
140 - Y'\ :sub:`1`\ [3:0] Y'\ :sub:`0`\ [3:0 140 - Y'\ :sub:`1`\ [3:0] Y'\ :sub:`0`\ [3:0]
141 - ... 141 - ...
142 - ... 142 - ...
143 - ... 143 - ...
144 - ... 144 - ...
145 145
146 * .. _V4L2-PIX-FMT-Y14: 146 * .. _V4L2-PIX-FMT-Y14:
147 147
148 - ``V4L2_PIX_FMT_Y14`` 148 - ``V4L2_PIX_FMT_Y14``
149 - 'Y14 ' 149 - 'Y14 '
150 150
151 - Y'\ :sub:`0`\ [7:0] 151 - Y'\ :sub:`0`\ [7:0]
152 - `00` Y'\ :sub:`0`\ [13:8] 152 - `00` Y'\ :sub:`0`\ [13:8]
153 - ... 153 - ...
154 - ... 154 - ...
155 - ... 155 - ...
156 - ... 156 - ...
157 - ... 157 - ...
158 158
159 * .. _V4L2-PIX-FMT-Y14P: 159 * .. _V4L2-PIX-FMT-Y14P:
160 160
161 - ``V4L2_PIX_FMT_Y14P`` 161 - ``V4L2_PIX_FMT_Y14P``
162 - 'Y14P' 162 - 'Y14P'
163 163
164 - Y'\ :sub:`0`\ [13:6] 164 - Y'\ :sub:`0`\ [13:6]
165 - Y'\ :sub:`1`\ [13:6] 165 - Y'\ :sub:`1`\ [13:6]
166 - Y'\ :sub:`2`\ [13:6] 166 - Y'\ :sub:`2`\ [13:6]
167 - Y'\ :sub:`3`\ [13:6] 167 - Y'\ :sub:`3`\ [13:6]
168 - Y'\ :sub:`1`\ [1:0] Y'\ :sub:`0`\ [5:0 168 - Y'\ :sub:`1`\ [1:0] Y'\ :sub:`0`\ [5:0]
169 - Y'\ :sub:`2`\ [3:0] Y'\ :sub:`1`\ [5:2 169 - Y'\ :sub:`2`\ [3:0] Y'\ :sub:`1`\ [5:2]
170 - Y'\ :sub:`3`\ [5:0] Y'\ :sub:`2`\ [5:4 170 - Y'\ :sub:`3`\ [5:0] Y'\ :sub:`2`\ [5:4]
171 171
172 * .. _V4L2-PIX-FMT-Y16: 172 * .. _V4L2-PIX-FMT-Y16:
173 173
174 - ``V4L2_PIX_FMT_Y16`` 174 - ``V4L2_PIX_FMT_Y16``
175 - 'Y16 ' 175 - 'Y16 '
176 176
177 - Y'\ :sub:`0`\ [7:0] 177 - Y'\ :sub:`0`\ [7:0]
178 - Y'\ :sub:`0`\ [15:8] 178 - Y'\ :sub:`0`\ [15:8]
179 - ... 179 - ...
180 - ... 180 - ...
181 - ... 181 - ...
182 - ... 182 - ...
183 - ... 183 - ...
184 184
185 * .. _V4L2-PIX-FMT-Y16-BE: 185 * .. _V4L2-PIX-FMT-Y16-BE:
186 186
187 - ``V4L2_PIX_FMT_Y16_BE`` 187 - ``V4L2_PIX_FMT_Y16_BE``
188 - 'Y16 ' | (1U << 31) 188 - 'Y16 ' | (1U << 31)
189 189
190 - Y'\ :sub:`0`\ [15:8] 190 - Y'\ :sub:`0`\ [15:8]
191 - Y'\ :sub:`0`\ [7:0] 191 - Y'\ :sub:`0`\ [7:0]
192 - ... 192 - ...
193 - ... 193 - ...
194 - ... 194 - ...
195 - ... 195 - ...
196 - ... 196 - ...
197 197
198 .. raw:: latex 198 .. raw:: latex
199 199
200 \normalsize 200 \normalsize
201 201
202 .. note:: 202 .. note::
203 203
204 For the Y16 and Y16_BE formats, the actual 204 For the Y16 and Y16_BE formats, the actual sampling precision may be lower
205 than 16 bits. For example, 10 bits per pix 205 than 16 bits. For example, 10 bits per pixel uses values in the range 0 to
206 1023. For the IPU3_Y10 format 25 pixels ar 206 1023. For the IPU3_Y10 format 25 pixels are packed into 32 bytes, which
207 leaves the 6 most significant bits of the 207 leaves the 6 most significant bits of the last byte padded with 0.
208 208
209 For Y012 and Y12 formats, Y012 places its 209 For Y012 and Y12 formats, Y012 places its data in the 12 high bits, with
210 padding zeros in the 4 low bits, in contra 210 padding zeros in the 4 low bits, in contrast to the Y12 format, which has
211 its padding located in the most significan 211 its padding located in the most significant bits of the 16 bit word.
212 212
213 The 'P' variations of the Y10, Y12 and Y14 213 The 'P' variations of the Y10, Y12 and Y14 formats are packed according to
214 the RAW10, RAW12 and RAW14 packing scheme 214 the RAW10, RAW12 and RAW14 packing scheme as defined by the MIPI CSI-2
215 specification. 215 specification.
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