mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-04 05:56:46 +07:00
8e080c2e6c
The V4L and DVB API's are there for a long time. however, up to now, no efforts were done to merge them to kernel DocBook. This patch adds the current versions of the specs as an unique compendium. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
158 lines
5.9 KiB
XML
158 lines
5.9 KiB
XML
<refentry id="V4L2-PIX-FMT-Y41P">
|
|
<refmeta>
|
|
<refentrytitle>V4L2_PIX_FMT_Y41P ('Y41P')</refentrytitle>
|
|
&manvol;
|
|
</refmeta>
|
|
<refnamediv>
|
|
<refname><constant>V4L2_PIX_FMT_Y41P</constant></refname>
|
|
<refpurpose>Format with ¼ horizontal chroma
|
|
resolution, also known as YUV 4:1:1</refpurpose>
|
|
</refnamediv>
|
|
<refsect1>
|
|
<title>Description</title>
|
|
|
|
<para>In this format each 12 bytes is eight pixels. In the
|
|
twelve bytes are two CbCr pairs and eight Y's. The first CbCr pair
|
|
goes with the first four Y's, and the second CbCr pair goes with the
|
|
other four Y's. The Cb and Cr components have one fourth the
|
|
horizontal resolution of the Y component.</para>
|
|
|
|
<para>Do not confuse this format with <link
|
|
linkend="V4L2-PIX-FMT-YUV411P"><constant>V4L2_PIX_FMT_YUV411P</constant></link>.
|
|
Y41P is derived from "YUV 4:1:1 <emphasis>packed</emphasis>", while
|
|
YUV411P stands for "YUV 4:1:1 <emphasis>planar</emphasis>".</para>
|
|
|
|
<example>
|
|
<title><constant>V4L2_PIX_FMT_Y41P</constant> 8 × 4
|
|
pixel image</title>
|
|
|
|
<formalpara>
|
|
<title>Byte Order</title>
|
|
<para>Each cell is one byte.
|
|
<informaltable frame="none">
|
|
<tgroup cols="13" align="center">
|
|
<colspec align="left" colwidth="2*" />
|
|
<tbody valign="top">
|
|
<row>
|
|
<entry>start + 0:</entry>
|
|
<entry>Cb<subscript>00</subscript></entry>
|
|
<entry>Y'<subscript>00</subscript></entry>
|
|
<entry>Cr<subscript>00</subscript></entry>
|
|
<entry>Y'<subscript>01</subscript></entry>
|
|
<entry>Cb<subscript>01</subscript></entry>
|
|
<entry>Y'<subscript>02</subscript></entry>
|
|
<entry>Cr<subscript>01</subscript></entry>
|
|
<entry>Y'<subscript>03</subscript></entry>
|
|
<entry>Y'<subscript>04</subscript></entry>
|
|
<entry>Y'<subscript>05</subscript></entry>
|
|
<entry>Y'<subscript>06</subscript></entry>
|
|
<entry>Y'<subscript>07</subscript></entry>
|
|
</row>
|
|
<row>
|
|
<entry>start + 12:</entry>
|
|
<entry>Cb<subscript>10</subscript></entry>
|
|
<entry>Y'<subscript>10</subscript></entry>
|
|
<entry>Cr<subscript>10</subscript></entry>
|
|
<entry>Y'<subscript>11</subscript></entry>
|
|
<entry>Cb<subscript>11</subscript></entry>
|
|
<entry>Y'<subscript>12</subscript></entry>
|
|
<entry>Cr<subscript>11</subscript></entry>
|
|
<entry>Y'<subscript>13</subscript></entry>
|
|
<entry>Y'<subscript>14</subscript></entry>
|
|
<entry>Y'<subscript>15</subscript></entry>
|
|
<entry>Y'<subscript>16</subscript></entry>
|
|
<entry>Y'<subscript>17</subscript></entry>
|
|
</row>
|
|
<row>
|
|
<entry>start + 24:</entry>
|
|
<entry>Cb<subscript>20</subscript></entry>
|
|
<entry>Y'<subscript>20</subscript></entry>
|
|
<entry>Cr<subscript>20</subscript></entry>
|
|
<entry>Y'<subscript>21</subscript></entry>
|
|
<entry>Cb<subscript>21</subscript></entry>
|
|
<entry>Y'<subscript>22</subscript></entry>
|
|
<entry>Cr<subscript>21</subscript></entry>
|
|
<entry>Y'<subscript>23</subscript></entry>
|
|
<entry>Y'<subscript>24</subscript></entry>
|
|
<entry>Y'<subscript>25</subscript></entry>
|
|
<entry>Y'<subscript>26</subscript></entry>
|
|
<entry>Y'<subscript>27</subscript></entry>
|
|
</row>
|
|
<row>
|
|
<entry>start + 36:</entry>
|
|
<entry>Cb<subscript>30</subscript></entry>
|
|
<entry>Y'<subscript>30</subscript></entry>
|
|
<entry>Cr<subscript>30</subscript></entry>
|
|
<entry>Y'<subscript>31</subscript></entry>
|
|
<entry>Cb<subscript>31</subscript></entry>
|
|
<entry>Y'<subscript>32</subscript></entry>
|
|
<entry>Cr<subscript>31</subscript></entry>
|
|
<entry>Y'<subscript>33</subscript></entry>
|
|
<entry>Y'<subscript>34</subscript></entry>
|
|
<entry>Y'<subscript>35</subscript></entry>
|
|
<entry>Y'<subscript>36</subscript></entry>
|
|
<entry>Y'<subscript>37</subscript></entry>
|
|
</row>
|
|
</tbody>
|
|
</tgroup>
|
|
</informaltable></para>
|
|
</formalpara>
|
|
|
|
<formalpara>
|
|
<title>Color Sample Location.</title>
|
|
<para>
|
|
<informaltable frame="none">
|
|
<tgroup cols="15" 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><entry></entry>
|
|
<entry>4</entry><entry></entry><entry>5</entry><entry></entry>
|
|
<entry>6</entry><entry></entry><entry>7</entry>
|
|
</row>
|
|
<row>
|
|
<entry>0</entry>
|
|
<entry>Y</entry><entry></entry><entry>Y</entry><entry>C</entry>
|
|
<entry>Y</entry><entry></entry><entry>Y</entry><entry></entry>
|
|
<entry>Y</entry><entry></entry><entry>Y</entry><entry>C</entry>
|
|
<entry>Y</entry><entry></entry><entry>Y</entry>
|
|
</row>
|
|
<row>
|
|
<entry>1</entry>
|
|
<entry>Y</entry><entry></entry><entry>Y</entry><entry>C</entry>
|
|
<entry>Y</entry><entry></entry><entry>Y</entry><entry></entry>
|
|
<entry>Y</entry><entry></entry><entry>Y</entry><entry>C</entry>
|
|
<entry>Y</entry><entry></entry><entry>Y</entry>
|
|
</row>
|
|
<row>
|
|
<entry>2</entry>
|
|
<entry>Y</entry><entry></entry><entry>Y</entry><entry>C</entry>
|
|
<entry>Y</entry><entry></entry><entry>Y</entry><entry></entry>
|
|
<entry>Y</entry><entry></entry><entry>Y</entry><entry>C</entry>
|
|
<entry>Y</entry><entry></entry><entry>Y</entry>
|
|
</row>
|
|
<row>
|
|
<entry>3</entry>
|
|
<entry>Y</entry><entry></entry><entry>Y</entry><entry>C</entry>
|
|
<entry>Y</entry><entry></entry><entry>Y</entry><entry></entry>
|
|
<entry>Y</entry><entry></entry><entry>Y</entry><entry>C</entry>
|
|
<entry>Y</entry><entry></entry><entry>Y</entry>
|
|
</row>
|
|
</tbody>
|
|
</tgroup>
|
|
</informaltable>
|
|
</para>
|
|
</formalpara>
|
|
</example>
|
|
</refsect1>
|
|
</refentry>
|
|
|
|
<!--
|
|
Local Variables:
|
|
mode: sgml
|
|
sgml-parent-document: "pixfmt.sgml"
|
|
indent-tabs-mode: nil
|
|
End:
|
|
-->
|