1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>V4L2_PIX_FMT_YUV422P ('422P')</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="LINUX MEDIA INFRASTRUCTURE API"><link rel="up" href="yuv-formats.html" title="YUV Formats"><link rel="prev" href="re27.html" title="V4L2_PIX_FMT_YVU410 ('YVU9'), V4L2_PIX_FMT_YUV410 ('YUV9')"><link rel="next" href="V4L2-PIX-FMT-YUV411P.html" title="V4L2_PIX_FMT_YUV411P ('411P')"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">V4L2_PIX_FMT_YUV422P ('422P')</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re27.html">Prev</a> </td><th width="60%" align="center">YUV Formats</th><td width="20%" align="right"> <a accesskey="n" href="V4L2-PIX-FMT-YUV411P.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="V4L2-PIX-FMT-YUV422P"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p><code class="constant">V4L2_PIX_FMT_YUV422P</code> — Format with ½ horizontal chroma resolution, 2also known as YUV 4:2:2. Planar layout as opposed to 3<code class="constant">V4L2_PIX_FMT_YUYV</code></p></div><div class="refsect1"><a name="idp1102342916"></a><h2>Description</h2><p>This format is not commonly used. This is a planar 4version of the YUYV format. The three components are separated into 5three sub-images or planes. The Y plane is first. The Y plane has one 6byte per pixel. The Cb plane immediately follows the Y plane in 7memory. The Cb plane is half the width of the Y plane (and of the 8image). Each Cb belongs to two pixels. For example, 9Cb<sub>0</sub> belongs to Y'<sub>00</sub>, 10Y'<sub>01</sub>. Following the Cb plane is the Cr plane, 11just like the Cb plane.</p><p>If the Y plane has pad bytes after each row, then the Cr 12and Cb planes have half as many pad bytes after their rows. In other 13words, two Cx rows (including padding) is exactly as long as one Y row 14(including padding).</p><div class="example"><a name="idp1102330652"></a><p class="title"><b>Example 2.25. <code class="constant">V4L2_PIX_FMT_YUV422P</code> 4 × 4 15pixel image</b></p><div class="example-contents"><p><b>Byte Order. </b>Each cell is one byte. 16 </p><div class="informaltable"><table border="0"><colgroup><col align="left"><col><col><col><col></colgroup><tbody valign="top"><tr><td align="left" valign="top">start + 0:</td><td align="center" valign="top">Y'<sub>00</sub></td><td align="center" valign="top">Y'<sub>01</sub></td><td align="center" valign="top">Y'<sub>02</sub></td><td align="center" valign="top">Y'<sub>03</sub></td></tr><tr><td align="left" valign="top">start + 4:</td><td align="center" valign="top">Y'<sub>10</sub></td><td align="center" valign="top">Y'<sub>11</sub></td><td align="center" valign="top">Y'<sub>12</sub></td><td align="center" valign="top">Y'<sub>13</sub></td></tr><tr><td align="left" valign="top">start + 8:</td><td align="center" valign="top">Y'<sub>20</sub></td><td align="center" valign="top">Y'<sub>21</sub></td><td align="center" valign="top">Y'<sub>22</sub></td><td align="center" valign="top">Y'<sub>23</sub></td></tr><tr><td align="left" valign="top">start + 12:</td><td align="center" valign="top">Y'<sub>30</sub></td><td align="center" valign="top">Y'<sub>31</sub></td><td align="center" valign="top">Y'<sub>32</sub></td><td align="center" valign="top">Y'<sub>33</sub></td></tr><tr><td align="left" valign="top">start + 16:</td><td align="center" valign="top">Cb<sub>00</sub></td><td align="center" valign="top">Cb<sub>01</sub></td><td class="auto-generated"> </td><td class="auto-generated"> </td></tr><tr><td align="left" valign="top">start + 18:</td><td align="center" valign="top">Cb<sub>10</sub></td><td align="center" valign="top">Cb<sub>11</sub></td><td class="auto-generated"> </td><td class="auto-generated"> </td></tr><tr><td align="left" valign="top">start + 20:</td><td align="center" valign="top">Cb<sub>20</sub></td><td align="center" valign="top">Cb<sub>21</sub></td><td class="auto-generated"> </td><td class="auto-generated"> </td></tr><tr><td align="left" valign="top">start + 22:</td><td align="center" valign="top">Cb<sub>30</sub></td><td align="center" valign="top">Cb<sub>31</sub></td><td class="auto-generated"> </td><td class="auto-generated"> </td></tr><tr><td align="left" valign="top">start + 24:</td><td align="center" valign="top">Cr<sub>00</sub></td><td align="center" valign="top">Cr<sub>01</sub></td><td class="auto-generated"> </td><td class="auto-generated"> </td></tr><tr><td align="left" valign="top">start + 26:</td><td align="center" valign="top">Cr<sub>10</sub></td><td align="center" valign="top">Cr<sub>11</sub></td><td class="auto-generated"> </td><td class="auto-generated"> </td></tr><tr><td align="left" valign="top">start + 28:</td><td align="center" valign="top">Cr<sub>20</sub></td><td align="center" valign="top">Cr<sub>21</sub></td><td class="auto-generated"> </td><td class="auto-generated"> </td></tr><tr><td align="left" valign="top">start + 30:</td><td align="center" valign="top">Cr<sub>30</sub></td><td align="center" valign="top">Cr<sub>31</sub></td><td class="auto-generated"> </td><td class="auto-generated"> </td></tr></tbody></table></div><p> 17 </p><p><b>Color Sample Location. </b> 18 </p><div class="informaltable"><table border="0"><colgroup><col><col><col><col><col><col><col></colgroup><tbody valign="top"><tr><td align="center" valign="top"> </td><td align="center" valign="top">0</td><td align="center" valign="top"> </td><td align="center" valign="top">1</td><td align="center" valign="top"> </td><td align="center" valign="top">2</td><td align="center" valign="top"> </td><td align="center" valign="top">3</td></tr><tr><td align="center" valign="top">0</td><td align="center" valign="top">Y</td><td align="center" valign="top">C</td><td align="center" valign="top">Y</td><td align="center" valign="top"> </td><td align="center" valign="top">Y</td><td align="center" valign="top">C</td><td align="center" valign="top">Y</td></tr><tr><td align="center" valign="top">1</td><td align="center" valign="top">Y</td><td align="center" valign="top">C</td><td align="center" valign="top">Y</td><td align="center" valign="top"> </td><td align="center" valign="top">Y</td><td align="center" valign="top">C</td><td align="center" valign="top">Y</td></tr><tr><td align="center" valign="top">2</td><td align="center" valign="top">Y</td><td align="center" valign="top">C</td><td align="center" valign="top">Y</td><td align="center" valign="top"> </td><td align="center" valign="top">Y</td><td align="center" valign="top">C</td><td align="center" valign="top">Y</td></tr><tr><td align="center" valign="top">3</td><td align="center" valign="top">Y</td><td align="center" valign="top">C</td><td align="center" valign="top">Y</td><td align="center" valign="top"> </td><td align="center" valign="top">Y</td><td align="center" valign="top">C</td><td align="center" valign="top">Y</td></tr></tbody></table></div><p> 19 </p></div></div><br class="example-break"></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="re27.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="yuv-formats.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="V4L2-PIX-FMT-YUV411P.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">V4L2_PIX_FMT_YVU410 ('YVU9'), V4L2_PIX_FMT_YUV410 ('YUV9') </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> V4L2_PIX_FMT_YUV411P ('411P')</td></tr></table></div></body></html> 20