← Back to branch summary

~ubuntu-branches/ubuntu/precise/linux-ti-omap4/precise

« back to all changes in this revision

Viewing changes to Documentation/DocBook/v4l/pixfmt-srggb12.xml

  • Committer: Bazaar Package Importer
  • Author(s): Paolo Pisati
  • Date: 2011-06-29 15:23:51 UTC
  • mfrom: (26.1.1 natty-proposed)
  • Revision ID: james.westby@ubuntu.com-20110629152351-xs96tm303d95rpbk
Tags: 3.0.0-1200.2
* Rebased against 3.0.0-6.7
* BSP from TI based on 3.0.0

Show diffs side-by-side

added added

removed removed

Lines of Context:
Documentation/DocBook/v4l/pixfmt-srggb12.xml
 
1
    <refentry>
 
2
      <refmeta>
 
3
        <refentrytitle>V4L2_PIX_FMT_SRGGB12 ('RG12'),
 
4
         V4L2_PIX_FMT_SGRBG12 ('BA12'),
 
5
         V4L2_PIX_FMT_SGBRG12 ('GB12'),
 
6
         V4L2_PIX_FMT_SBGGR12 ('BG12'),
 
7
         </refentrytitle>
 
8
        &manvol;
 
9
      </refmeta>
 
10
      <refnamediv>
 
11
        <refname id="V4L2-PIX-FMT-SRGGB12"><constant>V4L2_PIX_FMT_SRGGB12</constant></refname>
 
12
        <refname id="V4L2-PIX-FMT-SGRBG12"><constant>V4L2_PIX_FMT_SGRBG12</constant></refname>
 
13
        <refname id="V4L2-PIX-FMT-SGBRG12"><constant>V4L2_PIX_FMT_SGBRG12</constant></refname>
 
14
        <refname id="V4L2-PIX-FMT-SBGGR12"><constant>V4L2_PIX_FMT_SBGGR12</constant></refname>
 
15
        <refpurpose>12-bit Bayer formats expanded to 16 bits</refpurpose>
 
16
      </refnamediv>
 
17
      <refsect1>
 
18
        <title>Description</title>
 
19
 
 
20
        <para>The following four pixel formats are raw sRGB / Bayer formats with
 
21
12 bits per colour. Each colour component is stored in a 16-bit word, with 6
 
22
unused high bits filled with zeros. Each n-pixel row contains n/2 green samples
 
23
and n/2 blue or red samples, with alternating red and blue rows. Bytes are
 
24
stored in memory in little endian order. They are conventionally described
 
25
as GRGR... BGBG..., RGRG... GBGB..., etc. Below is an example of one of these
 
26
formats</para>
 
27
 
 
28
    <example>
 
29
      <title><constant>V4L2_PIX_FMT_SBGGR12</constant> 4 &times; 4
 
30
pixel image</title>
 
31
 
 
32
      <formalpara>
 
33
        <title>Byte Order.</title>
 
34
        <para>Each cell is one byte, high 6 bits in high bytes are 0.
 
35
          <informaltable frame="none">
 
36
            <tgroup cols="5" align="center">
 
37
              <colspec align="left" colwidth="2*" />
 
38
              <tbody valign="top">
 
39
                <row>
 
40
                  <entry>start&nbsp;+&nbsp;0:</entry>
 
41
                  <entry>B<subscript>00low</subscript></entry>
 
42
                  <entry>B<subscript>00high</subscript></entry>
 
43
                  <entry>G<subscript>01low</subscript></entry>
 
44
                  <entry>G<subscript>01high</subscript></entry>
 
45
                  <entry>B<subscript>02low</subscript></entry>
 
46
                  <entry>B<subscript>02high</subscript></entry>
 
47
                  <entry>G<subscript>03low</subscript></entry>
 
48
                  <entry>G<subscript>03high</subscript></entry>
 
49
                </row>
 
50
                <row>
 
51
                  <entry>start&nbsp;+&nbsp;8:</entry>
 
52
                  <entry>G<subscript>10low</subscript></entry>
 
53
                  <entry>G<subscript>10high</subscript></entry>
 
54
                  <entry>R<subscript>11low</subscript></entry>
 
55
                  <entry>R<subscript>11high</subscript></entry>
 
56
                  <entry>G<subscript>12low</subscript></entry>
 
57
                  <entry>G<subscript>12high</subscript></entry>
 
58
                  <entry>R<subscript>13low</subscript></entry>
 
59
                  <entry>R<subscript>13high</subscript></entry>
 
60
                </row>
 
61
                <row>
 
62
                  <entry>start&nbsp;+&nbsp;16:</entry>
 
63
                  <entry>B<subscript>20low</subscript></entry>
 
64
                  <entry>B<subscript>20high</subscript></entry>
 
65
                  <entry>G<subscript>21low</subscript></entry>
 
66
                  <entry>G<subscript>21high</subscript></entry>
 
67
                  <entry>B<subscript>22low</subscript></entry>
 
68
                  <entry>B<subscript>22high</subscript></entry>
 
69
                  <entry>G<subscript>23low</subscript></entry>
 
70
                  <entry>G<subscript>23high</subscript></entry>
 
71
                </row>
 
72
                <row>
 
73
                  <entry>start&nbsp;+&nbsp;24:</entry>
 
74
                  <entry>G<subscript>30low</subscript></entry>
 
75
                  <entry>G<subscript>30high</subscript></entry>
 
76
                  <entry>R<subscript>31low</subscript></entry>
 
77
                  <entry>R<subscript>31high</subscript></entry>
 
78
                  <entry>G<subscript>32low</subscript></entry>
 
79
                  <entry>G<subscript>32high</subscript></entry>
 
80
                  <entry>R<subscript>33low</subscript></entry>
 
81
                  <entry>R<subscript>33high</subscript></entry>
 
82
                </row>
 
83
              </tbody>
 
84
            </tgroup>
 
85
          </informaltable>
 
86
        </para>
 
87
      </formalpara>
 
88
    </example>
 
89
  </refsect1>
 
90
</refentry>