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| author | Srikant Patnaik | 2015-01-13 15:08:24 +0530 |
|---|---|---|
| committer | Srikant Patnaik | 2015-01-13 15:08:24 +0530 |
| commit | 97327692361306d1e6259021bc425e32832fdb50 (patch) | |
| tree | fe9088f3248ec61e24f404f21b9793cb644b7f01 /Documentation/DocBook/media/v4l/pixfmt-vyuy.xml | |
| parent | 2d05a8f663478a44e088d122e0d62109bbc801d0 (diff) | |
| parent | a3a8b90b61e21be3dde9101c4e86c881e0f06210 (diff) | |
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dirty fix to merging
Diffstat (limited to 'Documentation/DocBook/media/v4l/pixfmt-vyuy.xml')
| -rw-r--r-- | Documentation/DocBook/media/v4l/pixfmt-vyuy.xml | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/Documentation/DocBook/media/v4l/pixfmt-vyuy.xml b/Documentation/DocBook/media/v4l/pixfmt-vyuy.xml new file mode 100644 index 00000000..82803408 --- /dev/null +++ b/Documentation/DocBook/media/v4l/pixfmt-vyuy.xml @@ -0,0 +1,120 @@ + <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 × 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 + 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 + 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 + 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 + 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> |