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- <refentry id="V4L2-PIX-FMT-VYUY">
- <refmeta>
- <refentrytitle>V4L2_PIX_FMT_VYUY ('VYUY')</refentrytitle>
- &manvol;
- </refmeta>
- <refnamediv>
- <refname><constant>V4L2_PIX_FMT_VYUY</constant></refname>
- <refpurpose>Variation of
-<constant>V4L2_PIX_FMT_YUYV</constant> with different order of samples
-in memory</refpurpose>
- </refnamediv>
- <refsect1>
- <title>Description</title>
-
- <para>In this format each four bytes is two pixels. Each four
-bytes is two Y's, a Cb and a Cr. Each Y goes to one of the pixels, and
-the Cb and Cr belong to both pixels. As you can see, the Cr and Cb
-components have half the horizontal resolution of the Y
-component.</para>
-
- <example>
- <title><constant>V4L2_PIX_FMT_VYUY</constant> 4 &times; 4
-pixel image</title>
-
- <formalpara>
- <title>Byte Order.</title>
- <para>Each cell is one byte.
- <informaltable frame="none">
- <tgroup cols="9" align="center">
- <colspec align="left" colwidth="2*" />
- <tbody valign="top">
- <row>
- <entry>start&nbsp;+&nbsp;0:</entry>
- <entry>Cr<subscript>00</subscript></entry>
- <entry>Y'<subscript>00</subscript></entry>
- <entry>Cb<subscript>00</subscript></entry>
- <entry>Y'<subscript>01</subscript></entry>
- <entry>Cr<subscript>01</subscript></entry>
- <entry>Y'<subscript>02</subscript></entry>
- <entry>Cb<subscript>01</subscript></entry>
- <entry>Y'<subscript>03</subscript></entry>
- </row>
- <row>
- <entry>start&nbsp;+&nbsp;8:</entry>
- <entry>Cr<subscript>10</subscript></entry>
- <entry>Y'<subscript>10</subscript></entry>
- <entry>Cb<subscript>10</subscript></entry>
- <entry>Y'<subscript>11</subscript></entry>
- <entry>Cr<subscript>11</subscript></entry>
- <entry>Y'<subscript>12</subscript></entry>
- <entry>Cb<subscript>11</subscript></entry>
- <entry>Y'<subscript>13</subscript></entry>
- </row>
- <row>
- <entry>start&nbsp;+&nbsp;16:</entry>
- <entry>Cr<subscript>20</subscript></entry>
- <entry>Y'<subscript>20</subscript></entry>
- <entry>Cb<subscript>20</subscript></entry>
- <entry>Y'<subscript>21</subscript></entry>
- <entry>Cr<subscript>21</subscript></entry>
- <entry>Y'<subscript>22</subscript></entry>
- <entry>Cb<subscript>21</subscript></entry>
- <entry>Y'<subscript>23</subscript></entry>
- </row>
- <row>
- <entry>start&nbsp;+&nbsp;24:</entry>
- <entry>Cr<subscript>30</subscript></entry>
- <entry>Y'<subscript>30</subscript></entry>
- <entry>Cb<subscript>30</subscript></entry>
- <entry>Y'<subscript>31</subscript></entry>
- <entry>Cr<subscript>31</subscript></entry>
- <entry>Y'<subscript>32</subscript></entry>
- <entry>Cb<subscript>31</subscript></entry>
- <entry>Y'<subscript>33</subscript></entry>
- </row>
- </tbody>
- </tgroup>
- </informaltable>
- </para>
- </formalpara>
-
- <formalpara>
- <title>Color Sample Location.</title>
- <para>
- <informaltable frame="none">
- <tgroup cols="7" align="center">
- <tbody valign="top">
- <row>
- <entry></entry>
- <entry>0</entry><entry></entry><entry>1</entry><entry></entry>
- <entry>2</entry><entry></entry><entry>3</entry>
- </row>
- <row>
- <entry>0</entry>
- <entry>Y</entry><entry>C</entry><entry>Y</entry><entry></entry>
- <entry>Y</entry><entry>C</entry><entry>Y</entry>
- </row>
- <row>
- <entry>1</entry>
- <entry>Y</entry><entry>C</entry><entry>Y</entry><entry></entry>
- <entry>Y</entry><entry>C</entry><entry>Y</entry>
- </row>
- <row>
- <entry>2</entry>
- <entry>Y</entry><entry>C</entry><entry>Y</entry><entry></entry>
- <entry>Y</entry><entry>C</entry><entry>Y</entry>
- </row>
- <row>
- <entry>3</entry>
- <entry>Y</entry><entry>C</entry><entry>Y</entry><entry></entry>
- <entry>Y</entry><entry>C</entry><entry>Y</entry>
- </row>
- </tbody>
- </tgroup>
- </informaltable>
- </para>
- </formalpara>
- </example>
- </refsect1>
- </refentry>