Documentation/DocBook/media/v4l/pixfmt-y8i.xml

   1 <refentry id="V4L2-PIX-FMT-Y8I">
   2   <refmeta>
   3     <refentrytitle>V4L2_PIX_FMT_Y8I ('Y8I ')</refentrytitle>
   4     &manvol;
   5   </refmeta>
   6   <refnamediv>
   7     <refname><constant>V4L2_PIX_FMT_Y8I</constant></refname>
   8     <refpurpose>Interleaved grey-scale image, e.g. from a stereo-pair</refpurpose>
   9   </refnamediv>
  10   <refsect1>
  11     <title>Description</title>
  12
  13     <para>This is a grey-scale image with a depth of 8 bits per pixel, but with
  14 pixels from 2 sources interleaved. Each pixel is stored in a 16-bit word. E.g.
  15 the R200 RealSense camera stores pixel from the left sensor in lower and from
  16 the right sensor in the higher 8 bits.</para>
  17
  18     <example>
  19       <title><constant>V4L2_PIX_FMT_Y8I</constant> 4 &times; 4
  20 pixel image</title>
  21
  22       <formalpara>
  23         <title>Byte Order.</title>
  24         <para>Each cell is one byte.
  25           <informaltable frame="none">
  26             <tgroup cols="9" align="center">
  27               <colspec align="left" colwidth="2*" />
  28               <tbody valign="top">
  29                 <row>
  30                   <entry>start&nbsp;+&nbsp;0:</entry>
  31                   <entry>Y'<subscript>00left</subscript></entry>
  32                   <entry>Y'<subscript>00right</subscript></entry>
  33                   <entry>Y'<subscript>01left</subscript></entry>
  34                   <entry>Y'<subscript>01right</subscript></entry>
  35                   <entry>Y'<subscript>02left</subscript></entry>
  36                   <entry>Y'<subscript>02right</subscript></entry>
  37                   <entry>Y'<subscript>03left</subscript></entry>
  38                   <entry>Y'<subscript>03right</subscript></entry>
  39                 </row>
  40                 <row>
  41                   <entry>start&nbsp;+&nbsp;8:</entry>
  42                   <entry>Y'<subscript>10left</subscript></entry>
  43                   <entry>Y'<subscript>10right</subscript></entry>
  44                   <entry>Y'<subscript>11left</subscript></entry>
  45                   <entry>Y'<subscript>11right</subscript></entry>
  46                   <entry>Y'<subscript>12left</subscript></entry>
  47                   <entry>Y'<subscript>12right</subscript></entry>
  48                   <entry>Y'<subscript>13left</subscript></entry>
  49                   <entry>Y'<subscript>13right</subscript></entry>
  50                 </row>
  51                 <row>
  52                   <entry>start&nbsp;+&nbsp;16:</entry>
  53                   <entry>Y'<subscript>20left</subscript></entry>
  54                   <entry>Y'<subscript>20right</subscript></entry>
  55                   <entry>Y'<subscript>21left</subscript></entry>
  56                   <entry>Y'<subscript>21right</subscript></entry>
  57                   <entry>Y'<subscript>22left</subscript></entry>
  58                   <entry>Y'<subscript>22right</subscript></entry>
  59                   <entry>Y'<subscript>23left</subscript></entry>
  60                   <entry>Y'<subscript>23right</subscript></entry>
  61                 </row>
  62                 <row>
  63                   <entry>start&nbsp;+&nbsp;24:</entry>
  64                   <entry>Y'<subscript>30left</subscript></entry>
  65                   <entry>Y'<subscript>30right</subscript></entry>
  66                   <entry>Y'<subscript>31left</subscript></entry>
  67                   <entry>Y'<subscript>31right</subscript></entry>
  68                   <entry>Y'<subscript>32left</subscript></entry>
  69                   <entry>Y'<subscript>32right</subscript></entry>
  70                   <entry>Y'<subscript>33left</subscript></entry>
  71                   <entry>Y'<subscript>33right</subscript></entry>
  72                 </row>
  73               </tbody>
  74             </tgroup>
  75           </informaltable>
  76         </para>
  77       </formalpara>
  78     </example>
  79   </refsect1>
  80 </refentry>