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1 | .. -*- coding: utf-8; mode: rst -*- |
2 | ||
3 | .. _V4L2-PIX-FMT-YUV422P: | |
4 | ||
5 | ***************************** | |
6 | V4L2_PIX_FMT_YUV422P ('422P') | |
7 | ***************************** | |
8 | ||
9 | *man V4L2_PIX_FMT_YUV422P(2)* | |
10 | ||
11 | Format with ½ horizontal chroma resolution, also known as YUV 4:2:2. | |
12 | Planar layout as opposed to ``V4L2_PIX_FMT_YUYV`` | |
13 | ||
14 | ||
15 | Description | |
16 | =========== | |
17 | ||
18 | This format is not commonly used. This is a planar version of the YUYV | |
19 | format. The three components are separated into three sub-images or | |
20 | planes. The Y plane is first. The Y plane has one byte per pixel. The Cb | |
21 | plane immediately follows the Y plane in memory. The Cb plane is half | |
22 | the width of the Y plane (and of the image). Each Cb belongs to two | |
23 | pixels. For example, Cb\ :sub:`0` belongs to Y'\ :sub:`00`, | |
24 | Y'\ :sub:`01`. Following the Cb plane is the Cr plane, just like the Cb | |
25 | plane. | |
26 | ||
27 | If the Y plane has pad bytes after each row, then the Cr and Cb planes | |
28 | have half as many pad bytes after their rows. In other words, two Cx | |
29 | rows (including padding) is exactly as long as one Y row (including | |
30 | padding). | |
31 | ||
056d2ee6 | 32 | **Byte Order.** |
5377d91f MH |
33 | Each cell is one byte. |
34 | ||
35 | ||
36 | ||
37 | .. flat-table:: | |
38 | :header-rows: 0 | |
39 | :stub-columns: 0 | |
40 | :widths: 2 1 1 1 1 | |
41 | ||
42 | ||
43 | - .. row 1 | |
44 | ||
45 | - start + 0: | |
46 | ||
47 | - Y'\ :sub:`00` | |
48 | ||
49 | - Y'\ :sub:`01` | |
50 | ||
51 | - Y'\ :sub:`02` | |
52 | ||
53 | - Y'\ :sub:`03` | |
54 | ||
55 | - .. row 2 | |
56 | ||
57 | - start + 4: | |
58 | ||
59 | - Y'\ :sub:`10` | |
60 | ||
61 | - Y'\ :sub:`11` | |
62 | ||
63 | - Y'\ :sub:`12` | |
64 | ||
65 | - Y'\ :sub:`13` | |
66 | ||
67 | - .. row 3 | |
68 | ||
69 | - start + 8: | |
70 | ||
71 | - Y'\ :sub:`20` | |
72 | ||
73 | - Y'\ :sub:`21` | |
74 | ||
75 | - Y'\ :sub:`22` | |
76 | ||
77 | - Y'\ :sub:`23` | |
78 | ||
79 | - .. row 4 | |
80 | ||
81 | - start + 12: | |
82 | ||
83 | - Y'\ :sub:`30` | |
84 | ||
85 | - Y'\ :sub:`31` | |
86 | ||
87 | - Y'\ :sub:`32` | |
88 | ||
89 | - Y'\ :sub:`33` | |
90 | ||
91 | - .. row 5 | |
92 | ||
93 | - start + 16: | |
94 | ||
95 | - Cb\ :sub:`00` | |
96 | ||
97 | - Cb\ :sub:`01` | |
98 | ||
99 | - .. row 6 | |
100 | ||
101 | - start + 18: | |
102 | ||
103 | - Cb\ :sub:`10` | |
104 | ||
105 | - Cb\ :sub:`11` | |
106 | ||
107 | - .. row 7 | |
108 | ||
109 | - start + 20: | |
110 | ||
111 | - Cb\ :sub:`20` | |
112 | ||
113 | - Cb\ :sub:`21` | |
114 | ||
115 | - .. row 8 | |
116 | ||
117 | - start + 22: | |
118 | ||
119 | - Cb\ :sub:`30` | |
120 | ||
121 | - Cb\ :sub:`31` | |
122 | ||
123 | - .. row 9 | |
124 | ||
125 | - start + 24: | |
126 | ||
127 | - Cr\ :sub:`00` | |
128 | ||
129 | - Cr\ :sub:`01` | |
130 | ||
131 | - .. row 10 | |
132 | ||
133 | - start + 26: | |
134 | ||
135 | - Cr\ :sub:`10` | |
136 | ||
137 | - Cr\ :sub:`11` | |
138 | ||
139 | - .. row 11 | |
140 | ||
141 | - start + 28: | |
142 | ||
143 | - Cr\ :sub:`20` | |
144 | ||
145 | - Cr\ :sub:`21` | |
146 | ||
147 | - .. row 12 | |
148 | ||
149 | - start + 30: | |
150 | ||
151 | - Cr\ :sub:`30` | |
152 | ||
153 | - Cr\ :sub:`31` | |
154 | ||
155 | ||
156 | **Color Sample Location..** | |
157 | ||
158 | ||
159 | ||
160 | .. flat-table:: | |
161 | :header-rows: 0 | |
162 | :stub-columns: 0 | |
163 | ||
164 | ||
165 | - .. row 1 | |
166 | ||
0579e6e3 | 167 | - |
5377d91f MH |
168 | - 0 |
169 | ||
0579e6e3 | 170 | - |
5377d91f MH |
171 | - 1 |
172 | ||
5377d91f MH |
173 | - 2 |
174 | ||
0579e6e3 | 175 | - |
5377d91f MH |
176 | - 3 |
177 | ||
178 | - .. row 2 | |
179 | ||
180 | - 0 | |
181 | ||
182 | - Y | |
183 | ||
184 | - C | |
185 | ||
186 | - Y | |
187 | ||
5377d91f MH |
188 | - Y |
189 | ||
190 | - C | |
191 | ||
192 | - Y | |
193 | ||
194 | - .. row 3 | |
195 | ||
196 | - 1 | |
197 | ||
198 | - Y | |
199 | ||
200 | - C | |
201 | ||
202 | - Y | |
203 | ||
5377d91f MH |
204 | - Y |
205 | ||
206 | - C | |
207 | ||
208 | - Y | |
209 | ||
210 | - .. row 4 | |
211 | ||
212 | - 2 | |
213 | ||
214 | - Y | |
215 | ||
216 | - C | |
217 | ||
218 | - Y | |
219 | ||
5377d91f MH |
220 | - Y |
221 | ||
222 | - C | |
223 | ||
224 | - Y | |
225 | ||
226 | - .. row 5 | |
227 | ||
228 | - 3 | |
229 | ||
230 | - Y | |
231 | ||
232 | - C | |
233 | ||
234 | - Y | |
235 | ||
5377d91f MH |
236 | - Y |
237 | ||
238 | - C | |
239 | ||
240 | - Y |