Merge branch 'master' into csb1725

[mv-sheeva.git] / Documentation / DocBook / v4l / pixfmt-srggb8.xml

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+    <refentry id="V4L2-PIX-FMT-SRGGB8">
+      <refmeta>
+       <refentrytitle>V4L2_PIX_FMT_SRGGB8 ('RGGB')</refentrytitle>
+       &manvol;
+      </refmeta>
+      <refnamediv>
+       <refname><constant>V4L2_PIX_FMT_SRGGB8</constant></refname>
+       <refpurpose>Bayer RGB format</refpurpose>
+      </refnamediv>
+      <refsect1>
+       <title>Description</title>
+
+       <para>This is commonly the native format of digital cameras,
+reflecting the arrangement of sensors on the CCD device. Only one red,
+green or blue value is given for each pixel. Missing components must
+be interpolated from neighbouring pixels. From left to right the first
+row consists of a red and green value, the second row of a green and
+blue value. This scheme repeats to the right and down for every two
+columns and rows.</para>
+
+       <example>
+         <title><constant>V4L2_PIX_FMT_SRGGB8</constant> 4 &times; 4
+pixel image</title>
+
+         <formalpara>
+           <title>Byte Order.</title>
+           <para>Each cell is one byte.
+             <informaltable frame="none">
+               <tgroup cols="5" align="center">
+                 <colspec align="left" colwidth="2*" />
+                 <tbody valign="top">
+                   <row>
+                     <entry>start&nbsp;+&nbsp;0:</entry>
+                     <entry>R<subscript>00</subscript></entry>
+                     <entry>G<subscript>01</subscript></entry>
+                     <entry>R<subscript>02</subscript></entry>
+                     <entry>G<subscript>03</subscript></entry>
+                   </row>
+                   <row>
+                     <entry>start&nbsp;+&nbsp;4:</entry>
+                     <entry>G<subscript>10</subscript></entry>
+                     <entry>B<subscript>11</subscript></entry>
+                     <entry>G<subscript>12</subscript></entry>
+                     <entry>B<subscript>13</subscript></entry>
+                   </row>
+                   <row>
+                     <entry>start&nbsp;+&nbsp;8:</entry>
+                     <entry>R<subscript>20</subscript></entry>
+                     <entry>G<subscript>21</subscript></entry>
+                     <entry>R<subscript>22</subscript></entry>
+                     <entry>G<subscript>23</subscript></entry>
+                   </row>
+                   <row>
+                     <entry>start&nbsp;+&nbsp;12:</entry>
+                     <entry>G<subscript>30</subscript></entry>
+                     <entry>B<subscript>31</subscript></entry>
+                     <entry>G<subscript>32</subscript></entry>
+                     <entry>B<subscript>33</subscript></entry>
+                   </row>
+                 </tbody>
+               </tgroup>
+             </informaltable>
+           </para>
+         </formalpara>
+       </example>
+      </refsect1>
+    </refentry>