Documentation/DocBook/v4l/pixfmt-y16.xml

   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
  14 pixel. The least significant byte is stored at lower memory addresses
  15 (little-endian). Note the actual sampling precision may be lower than
  16 16 bits, for example 10 bits per pixel with values in range 0 to
  17 1023.</para>
  18
  19     <example>
  20       <title><constant>V4L2_PIX_FMT_Y16</constant> 4 &times; 4
  21 pixel 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   <!--
  84 Local Variables:
  85 mode: sgml
  86 sgml-parent-document: "pixfmt.sgml"
  87 indent-tabs-mode: nil
  88 End:
  89   -->