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1 | .. -*- coding: utf-8; mode: rst -*- |
2 | ||
3 | .. _V4L2-PIX-FMT-YUV411P: | |
4 | ||
5 | ***************************** | |
6 | V4L2_PIX_FMT_YUV411P ('411P') | |
7 | ***************************** | |
8 | ||
9 | *man V4L2_PIX_FMT_YUV411P(2)* | |
10 | ||
11 | Format with ¼ horizontal chroma resolution, also known as YUV 4:1:1. | |
12 | Planar layout as opposed to ``V4L2_PIX_FMT_Y41P`` | |
13 | ||
14 | ||
15 | Description | |
16 | =========== | |
17 | ||
18 | This format is not commonly used. This is a planar format similar to the | |
19 | 4:2:2 planar format except with half as many chroma. The three | |
20 | components are separated into three sub-images or planes. The Y plane is | |
21 | first. The Y plane has one byte per pixel. The Cb plane immediately | |
22 | follows the Y plane in memory. The Cb plane is ¼ the width of the Y | |
23 | plane (and of the image). Each Cb belongs to 4 pixels all on the same | |
24 | row. For example, Cb\ :sub:`0` belongs to Y'\ :sub:`00`, Y'\ :sub:`01`, | |
25 | Y'\ :sub:`02` and Y'\ :sub:`03`. Following the Cb plane is the Cr plane, | |
26 | just like the Cb plane. | |
27 | ||
28 | If the Y plane has pad bytes after each row, then the Cr and Cb planes | |
29 | have ¼ as many pad bytes after their rows. In other words, four C x rows | |
30 | (including padding) is exactly as long as one Y row (including padding). | |
31 | ||
056d2ee6 | 32 | **Byte Order.** |
5377d91f MH |
33 | Each cell is one byte. |
34 | ||
35 | ||
5377d91f MH |
36 | .. flat-table:: |
37 | :header-rows: 0 | |
38 | :stub-columns: 0 | |
39 | :widths: 2 1 1 1 1 | |
40 | ||
41 | ||
42 | - .. row 1 | |
43 | ||
44 | - start + 0: | |
45 | ||
46 | - Y'\ :sub:`00` | |
47 | ||
48 | - Y'\ :sub:`01` | |
49 | ||
50 | - Y'\ :sub:`02` | |
51 | ||
52 | - Y'\ :sub:`03` | |
53 | ||
54 | - .. row 2 | |
55 | ||
56 | - start + 4: | |
57 | ||
58 | - Y'\ :sub:`10` | |
59 | ||
60 | - Y'\ :sub:`11` | |
61 | ||
62 | - Y'\ :sub:`12` | |
63 | ||
64 | - Y'\ :sub:`13` | |
65 | ||
66 | - .. row 3 | |
67 | ||
68 | - start + 8: | |
69 | ||
70 | - Y'\ :sub:`20` | |
71 | ||
72 | - Y'\ :sub:`21` | |
73 | ||
74 | - Y'\ :sub:`22` | |
75 | ||
76 | - Y'\ :sub:`23` | |
77 | ||
78 | - .. row 4 | |
79 | ||
80 | - start + 12: | |
81 | ||
82 | - Y'\ :sub:`30` | |
83 | ||
84 | - Y'\ :sub:`31` | |
85 | ||
86 | - Y'\ :sub:`32` | |
87 | ||
88 | - Y'\ :sub:`33` | |
89 | ||
90 | - .. row 5 | |
91 | ||
92 | - start + 16: | |
93 | ||
94 | - Cb\ :sub:`00` | |
95 | ||
96 | - .. row 6 | |
97 | ||
98 | - start + 17: | |
99 | ||
100 | - Cb\ :sub:`10` | |
101 | ||
102 | - .. row 7 | |
103 | ||
104 | - start + 18: | |
105 | ||
106 | - Cb\ :sub:`20` | |
107 | ||
108 | - .. row 8 | |
109 | ||
110 | - start + 19: | |
111 | ||
112 | - Cb\ :sub:`30` | |
113 | ||
114 | - .. row 9 | |
115 | ||
116 | - start + 20: | |
117 | ||
118 | - Cr\ :sub:`00` | |
119 | ||
120 | - .. row 10 | |
121 | ||
122 | - start + 21: | |
123 | ||
124 | - Cr\ :sub:`10` | |
125 | ||
126 | - .. row 11 | |
127 | ||
128 | - start + 22: | |
129 | ||
130 | - Cr\ :sub:`20` | |
131 | ||
132 | - .. row 12 | |
133 | ||
134 | - start + 23: | |
135 | ||
136 | - Cr\ :sub:`30` | |
137 | ||
138 | ||
139 | **Color Sample Location..** | |
140 | ||
141 | ||
142 | ||
143 | .. flat-table:: | |
144 | :header-rows: 0 | |
145 | :stub-columns: 0 | |
146 | ||
147 | ||
148 | - .. row 1 | |
149 | ||
0579e6e3 | 150 | - |
5377d91f MH |
151 | - 0 |
152 | ||
5377d91f MH |
153 | - 1 |
154 | ||
0579e6e3 | 155 | - |
5377d91f MH |
156 | - 2 |
157 | ||
5377d91f MH |
158 | - 3 |
159 | ||
160 | - .. row 2 | |
161 | ||
162 | - 0 | |
163 | ||
164 | - Y | |
165 | ||
5377d91f MH |
166 | - Y |
167 | ||
168 | - C | |
169 | ||
170 | - Y | |
171 | ||
5377d91f MH |
172 | - Y |
173 | ||
174 | - .. row 3 | |
175 | ||
176 | - 1 | |
177 | ||
178 | - Y | |
179 | ||
5377d91f MH |
180 | - Y |
181 | ||
182 | - C | |
183 | ||
184 | - Y | |
185 | ||
5377d91f MH |
186 | - Y |
187 | ||
188 | - .. row 4 | |
189 | ||
190 | - 2 | |
191 | ||
192 | - Y | |
193 | ||
5377d91f MH |
194 | - Y |
195 | ||
196 | - C | |
197 | ||
198 | - Y | |
199 | ||
5377d91f MH |
200 | - Y |
201 | ||
202 | - .. row 5 | |
203 | ||
204 | - 3 | |
205 | ||
206 | - Y | |
207 | ||
5377d91f MH |
208 | - Y |
209 | ||
210 | - C | |
211 | ||
212 | - Y | |
213 | ||
5377d91f | 214 | - Y |