• Home
  • History
  • Annotate
  • Line#
  • Navigate
  • Raw
  • Download
  • only in /asuswrt-rt-n18u-9.0.0.4.380.2695/release/src-rt-6.x.4708/linux/linux-2.6/Documentation/DocBook/v4l/
1<refentry id="V4L2-PIX-FMT-Y16">
2  <refmeta>
3    <refentrytitle>V4L2_PIX_FMT_Y16 ('Y16 ')</refentrytitle>
4    &manvol;
5  </refmeta>
6  <refnamediv>
7    <refname><constant>V4L2_PIX_FMT_Y16</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 with a depth of 16 bits per
14pixel. The least significant byte is stored at lower memory addresses
15(little-endian). Note the actual sampling precision may be lower than
1616 bits, for example 10 bits per pixel with values in range 0 to
171023.</para>
18
19    <example>
20      <title><constant>V4L2_PIX_FMT_Y16</constant> 4 &times; 4
21pixel image</title>
22
23      <formalpara>
24	<title>Byte Order.</title>
25	<para>Each cell is one byte.
26	  <informaltable frame="none">
27	    <tgroup cols="9" align="center">
28	      <colspec align="left" colwidth="2*" />
29	      <tbody valign="top">
30		<row>
31		  <entry>start&nbsp;+&nbsp;0:</entry>
32		  <entry>Y'<subscript>00low</subscript></entry>
33		  <entry>Y'<subscript>00high</subscript></entry>
34		  <entry>Y'<subscript>01low</subscript></entry>
35		  <entry>Y'<subscript>01high</subscript></entry>
36		  <entry>Y'<subscript>02low</subscript></entry>
37		  <entry>Y'<subscript>02high</subscript></entry>
38		  <entry>Y'<subscript>03low</subscript></entry>
39		  <entry>Y'<subscript>03high</subscript></entry>
40		</row>
41		<row>
42		  <entry>start&nbsp;+&nbsp;8:</entry>
43		  <entry>Y'<subscript>10low</subscript></entry>
44		  <entry>Y'<subscript>10high</subscript></entry>
45		  <entry>Y'<subscript>11low</subscript></entry>
46		  <entry>Y'<subscript>11high</subscript></entry>
47		  <entry>Y'<subscript>12low</subscript></entry>
48		  <entry>Y'<subscript>12high</subscript></entry>
49		  <entry>Y'<subscript>13low</subscript></entry>
50		  <entry>Y'<subscript>13high</subscript></entry>
51		</row>
52		<row>
53		  <entry>start&nbsp;+&nbsp;16:</entry>
54		  <entry>Y'<subscript>20low</subscript></entry>
55		  <entry>Y'<subscript>20high</subscript></entry>
56		  <entry>Y'<subscript>21low</subscript></entry>
57		  <entry>Y'<subscript>21high</subscript></entry>
58		  <entry>Y'<subscript>22low</subscript></entry>
59		  <entry>Y'<subscript>22high</subscript></entry>
60		  <entry>Y'<subscript>23low</subscript></entry>
61		  <entry>Y'<subscript>23high</subscript></entry>
62		</row>
63		<row>
64		  <entry>start&nbsp;+&nbsp;24:</entry>
65		  <entry>Y'<subscript>30low</subscript></entry>
66		  <entry>Y'<subscript>30high</subscript></entry>
67		  <entry>Y'<subscript>31low</subscript></entry>
68		  <entry>Y'<subscript>31high</subscript></entry>
69		  <entry>Y'<subscript>32low</subscript></entry>
70		  <entry>Y'<subscript>32high</subscript></entry>
71		  <entry>Y'<subscript>33low</subscript></entry>
72		  <entry>Y'<subscript>33high</subscript></entry>
73		</row>
74	      </tbody>
75	    </tgroup>
76	  </informaltable>
77	</para>
78      </formalpara>
79    </example>
80  </refsect1>
81</refentry>
82
83  <!--
84Local Variables:
85mode: sgml
86sgml-parent-document: "pixfmt.sgml"
87indent-tabs-mode: nil
88End:
89  -->
90