1    <refentry id="V4L2-PIX-FMT-GREY">
2      <refmeta>
3	<refentrytitle>V4L2_PIX_FMT_GREY ('GREY')</refentrytitle>
4	&manvol;
5      </refmeta>
6      <refnamediv>
7	<refname><constant>V4L2_PIX_FMT_GREY</constant></refname>
8	<refpurpose>Grey-scale image</refpurpose>
9      </refnamediv>
10      <refsect1>
11	<title>Description</title>
12
13	<para>This is a grey-scale image. It is really a degenerate
14Y'CbCr format which simply contains no Cb or Cr data.</para>
15
16	<example>
17	  <title><constant>V4L2_PIX_FMT_GREY</constant> 4 &times; 4
18pixel image</title>
19
20	  <formalpara>
21	    <title>Byte Order.</title>
22	    <para>Each cell is one byte.
23		<informaltable frame="none">
24		<tgroup cols="5" align="center">
25		  <colspec align="left" colwidth="2*" />
26		  <tbody valign="top">
27		    <row>
28		      <entry>start&nbsp;+&nbsp;0:</entry>
29		      <entry>Y'<subscript>00</subscript></entry>
30		      <entry>Y'<subscript>01</subscript></entry>
31		      <entry>Y'<subscript>02</subscript></entry>
32		      <entry>Y'<subscript>03</subscript></entry>
33		    </row>
34		    <row>
35		      <entry>start&nbsp;+&nbsp;4:</entry>
36		      <entry>Y'<subscript>10</subscript></entry>
37		      <entry>Y'<subscript>11</subscript></entry>
38		      <entry>Y'<subscript>12</subscript></entry>
39		      <entry>Y'<subscript>13</subscript></entry>
40		    </row>
41		    <row>
42		      <entry>start&nbsp;+&nbsp;8:</entry>
43		      <entry>Y'<subscript>20</subscript></entry>
44		      <entry>Y'<subscript>21</subscript></entry>
45		      <entry>Y'<subscript>22</subscript></entry>
46		      <entry>Y'<subscript>23</subscript></entry>
47		    </row>
48		    <row>
49		      <entry>start&nbsp;+&nbsp;12:</entry>
50		      <entry>Y'<subscript>30</subscript></entry>
51		      <entry>Y'<subscript>31</subscript></entry>
52		      <entry>Y'<subscript>32</subscript></entry>
53		      <entry>Y'<subscript>33</subscript></entry>
54		    </row>
55		  </tbody>
56		</tgroup>
57		</informaltable>
58	      </para>
59	  </formalpara>
60	</example>
61      </refsect1>
62    </refentry>
63