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Guennadi Liakhovetski039aa702010-02-25 14:33:27 -03001 <refentry id="V4L2-PIX-FMT-SRGGB8">
2 <refmeta>
3 <refentrytitle>V4L2_PIX_FMT_SRGGB8 ('RGGB')</refentrytitle>
4 &manvol;
5 </refmeta>
6 <refnamediv>
7 <refname><constant>V4L2_PIX_FMT_SRGGB8</constant></refname>
8 <refpurpose>Bayer RGB format</refpurpose>
9 </refnamediv>
10 <refsect1>
11 <title>Description</title>
12
13 <para>This is commonly the native format of digital cameras,
14reflecting the arrangement of sensors on the CCD device. Only one red,
15green or blue value is given for each pixel. Missing components must
16be interpolated from neighbouring pixels. From left to right the first
17row consists of a red and green value, the second row of a green and
18blue value. This scheme repeats to the right and down for every two
19columns and rows.</para>
20
21 <example>
22 <title><constant>V4L2_PIX_FMT_SRGGB8</constant> 4 &times; 4
23pixel image</title>
24
25 <formalpara>
26 <title>Byte Order.</title>
27 <para>Each cell is one byte.
28 <informaltable frame="none">
29 <tgroup cols="5" align="center">
30 <colspec align="left" colwidth="2*" />
31 <tbody valign="top">
32 <row>
33 <entry>start&nbsp;+&nbsp;0:</entry>
34 <entry>R<subscript>00</subscript></entry>
35 <entry>G<subscript>01</subscript></entry>
36 <entry>R<subscript>02</subscript></entry>
37 <entry>G<subscript>03</subscript></entry>
38 </row>
39 <row>
40 <entry>start&nbsp;+&nbsp;4:</entry>
41 <entry>G<subscript>10</subscript></entry>
42 <entry>B<subscript>11</subscript></entry>
43 <entry>G<subscript>12</subscript></entry>
44 <entry>B<subscript>13</subscript></entry>
45 </row>
46 <row>
47 <entry>start&nbsp;+&nbsp;8:</entry>
48 <entry>R<subscript>20</subscript></entry>
49 <entry>G<subscript>21</subscript></entry>
50 <entry>R<subscript>22</subscript></entry>
51 <entry>G<subscript>23</subscript></entry>
52 </row>
53 <row>
54 <entry>start&nbsp;+&nbsp;12:</entry>
55 <entry>G<subscript>30</subscript></entry>
56 <entry>B<subscript>31</subscript></entry>
57 <entry>G<subscript>32</subscript></entry>
58 <entry>B<subscript>33</subscript></entry>
59 </row>
60 </tbody>
61 </tgroup>
62 </informaltable>
63 </para>
64 </formalpara>
65 </example>
66 </refsect1>
67 </refentry>