| <refentry id="V4L2-PIX-FMT-GREY"> |
| <refmeta> |
| <refentrytitle>V4L2_PIX_FMT_GREY ('GREY')</refentrytitle> |
| &manvol; |
| </refmeta> |
| <refnamediv> |
| <refname><constant>V4L2_PIX_FMT_GREY</constant></refname> |
| <refpurpose>Grey-scale image</refpurpose> |
| </refnamediv> |
| <refsect1> |
| <title>Description</title> |
| |
| <para>This is a grey-scale image. It is really a degenerate |
| Y'CbCr format which simply contains no Cb or Cr data.</para> |
| |
| <example> |
| <title><constant>V4L2_PIX_FMT_GREY</constant> 4 × 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 + 0:</entry> |
| <entry>Y'<subscript>00</subscript></entry> |
| <entry>Y'<subscript>01</subscript></entry> |
| <entry>Y'<subscript>02</subscript></entry> |
| <entry>Y'<subscript>03</subscript></entry> |
| </row> |
| <row> |
| <entry>start + 4:</entry> |
| <entry>Y'<subscript>10</subscript></entry> |
| <entry>Y'<subscript>11</subscript></entry> |
| <entry>Y'<subscript>12</subscript></entry> |
| <entry>Y'<subscript>13</subscript></entry> |
| </row> |
| <row> |
| <entry>start + 8:</entry> |
| <entry>Y'<subscript>20</subscript></entry> |
| <entry>Y'<subscript>21</subscript></entry> |
| <entry>Y'<subscript>22</subscript></entry> |
| <entry>Y'<subscript>23</subscript></entry> |
| </row> |
| <row> |
| <entry>start + 12:</entry> |
| <entry>Y'<subscript>30</subscript></entry> |
| <entry>Y'<subscript>31</subscript></entry> |
| <entry>Y'<subscript>32</subscript></entry> |
| <entry>Y'<subscript>33</subscript></entry> |
| </row> |
| </tbody> |
| </tgroup> |
| </informaltable> |
| </para> |
| </formalpara> |
| </example> |
| </refsect1> |
| </refentry> |
