blob: 5de85f987644944a5f55b1ef320af4998ae5c87c (
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
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
|
.. -*- coding: utf-8; mode: rst -*-
.. _V4L2-PIX-FMT-YUV422M:
.. _v4l2-pix-fmt-yvu422m:
************************************************************
V4L2_PIX_FMT_YUV422M ('YM16'), V4L2_PIX_FMT_YVU422M ('YM61')
************************************************************
*man V4L2_PIX_FMT_YUV422M(2)*
V4L2_PIX_FMT_YVU422M
Planar formats with ½ horizontal resolution, also known as YUV and YVU
4:2:2
Description
===========
This is a multi-planar format, as opposed to a packed format. The three
components are separated into three sub-images or planes.
The Y plane is first. The Y plane has one byte per pixel. For
``V4L2_PIX_FMT_YUV422M`` the Cb data constitutes the second plane which
is half the width of the Y plane (and of the image). Each Cb belongs to
two pixels. For example, Cb\ :sub:`0` belongs to Y'\ :sub:`00`,
Y'\ :sub:`01`. The Cr data, just like the Cb plane, is in the third
plane.
``V4L2_PIX_FMT_YVU422M`` is the same except the Cr data is stored in the
second plane and the Cb data in the third plane.
If the Y plane has pad bytes after each row, then the Cb and Cr planes
have half as many pad bytes after their rows. In other words, two Cx
rows (including padding) is exactly as long as one Y row (including
padding).
``V4L2_PIX_FMT_YUV422M`` and ``V4L2_PIX_FMT_YVU422M`` are intended to be
used only in drivers and applications that support the multi-planar API,
described in :ref:`planar-apis`.
**Byte Order.**
Each cell is one byte.
.. tabularcolumns:: |p{5.8cm}|p{2.9cm}|p{2.9cm}|p{2.9cm}|p{3.0cm}|
.. flat-table::
:header-rows: 0
:stub-columns: 0
:widths: 2 1 1 1 1
- .. row 1
- start0 + 0:
- Y'\ :sub:`00`
- Y'\ :sub:`01`
- Y'\ :sub:`02`
- Y'\ :sub:`03`
- .. row 2
- start0 + 4:
- Y'\ :sub:`10`
- Y'\ :sub:`11`
- Y'\ :sub:`12`
- Y'\ :sub:`13`
- .. row 3
- start0 + 8:
- Y'\ :sub:`20`
- Y'\ :sub:`21`
- Y'\ :sub:`22`
- Y'\ :sub:`23`
- .. row 4
- start0 + 12:
- Y'\ :sub:`30`
- Y'\ :sub:`31`
- Y'\ :sub:`32`
- Y'\ :sub:`33`
- .. row 5
-
- .. row 6
- start1 + 0:
- Cb\ :sub:`00`
- Cb\ :sub:`01`
- .. row 7
- start1 + 2:
- Cb\ :sub:`10`
- Cb\ :sub:`11`
- .. row 8
- start1 + 4:
- Cb\ :sub:`20`
- Cb\ :sub:`21`
- .. row 9
- start1 + 6:
- Cb\ :sub:`30`
- Cb\ :sub:`31`
- .. row 10
-
- .. row 11
- start2 + 0:
- Cr\ :sub:`00`
- Cr\ :sub:`01`
- .. row 12
- start2 + 2:
- Cr\ :sub:`10`
- Cr\ :sub:`11`
- .. row 13
- start2 + 4:
- Cr\ :sub:`20`
- Cr\ :sub:`21`
- .. row 14
- start2 + 6:
- Cr\ :sub:`30`
- Cr\ :sub:`31`
**Color Sample Location..**
.. flat-table::
:header-rows: 0
:stub-columns: 0
- .. row 1
-
- 0
-
- 1
- 2
-
- 3
- .. row 2
- 0
- Y
- C
- Y
- Y
- C
- Y
- .. row 3
- 1
- Y
- C
- Y
- Y
- C
- Y
- .. row 4
- 2
- Y
- C
- Y
- Y
- C
- Y
- .. row 5
- 3
- Y
- C
- Y
- Y
- C
- Y
|
