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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968" /><title>V4L2_PIX_FMT_YUV411P ('411P')</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="LINUX MEDIA INFRASTRUCTURE API" /><link rel="up" href="ch02s05.html" title="YUV Formats" /><link rel="prev" href="re16.html" title="V4L2_PIX_FMT_YUV422P ('422P')" /><link rel="next" href="re18.html" title="V4L2_PIX_FMT_NV12 ('NV12'), V4L2_PIX_FMT_NV21 ('NV21')" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">V4L2_PIX_FMT_YUV411P ('411P')</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re16.html">Prev</a> </td><th width="60%" align="center">YUV Formats</th><td width="20%" align="right"> <a accesskey="n" href="re18.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="V4L2_PIX_FMT_YUV411P ('411P')"><a id="V4L2-PIX-FMT-YUV411P"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p><code class="constant">V4L2_PIX_FMT_YUV411P</code> — Format with ¼ horizontal chroma resolution,
also known as YUV 4:1:1. Planar layout as opposed to
<code class="constant">V4L2_PIX_FMT_Y41P</code></p></div><div class="refsect1" title="Description"><a id="id2815149"></a><h2>Description</h2><p>This format is not commonly used. This is a planar
format similar to the 4:2:2 planar format except with half as many
chroma. The three components are separated into three sub-images or
planes. The Y plane is first. The Y plane has one byte per pixel. The
Cb plane immediately follows the Y plane in memory. The Cb plane is
¼ the width of the Y plane (and of the image). Each Cb belongs
to 4 pixels all on the same row. For example,
Cb<sub>0</sub> belongs to Y'<sub>00</sub>,
Y'<sub>01</sub>, Y'<sub>02</sub> and
Y'<sub>03</sub>. Following the Cb plane is the Cr plane,
just like the Cb plane.</p><p>If the Y plane has pad bytes after each row, then the Cr
and Cb planes have ¼ as many pad bytes after their rows. In
other words, four C x rows (including padding) is exactly as long as
one Y row (including padding).</p><div class="example"><a id="id2815755"></a><p class="title"><b>Example 2.17. <code class="constant">V4L2_PIX_FMT_YUV411P</code> 4 × 4
pixel image</b></p><div class="example-contents"><p title="Byte Order."><b>Byte Order. </b>Each cell is one byte.
</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 class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td></tr><tr><td align="left" valign="top">start + 17:</td><td align="center" valign="top">Cb<sub>10</sub></td><td class="auto-generated"> </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>20</sub></td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td></tr><tr><td align="left" valign="top">start + 19:</td><td align="center" valign="top">Cb<sub>30</sub></td><td class="auto-generated"> </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">Cr<sub>00</sub></td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td></tr><tr><td align="left" valign="top">start + 21:</td><td align="center" valign="top">Cr<sub>10</sub></td><td class="auto-generated"> </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">Cr<sub>20</sub></td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td></tr><tr><td align="left" valign="top">start + 23:</td><td align="center" valign="top">Cr<sub>30</sub></td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td></tr></tbody></table></div><p title="Byte Order.">
</p><p title="Color Sample Location."><b>Color Sample Location. </b>
</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"> </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></tr><tr><td align="center" valign="top">1</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><td align="center" valign="top"> </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"> </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></tr><tr><td align="center" valign="top">3</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><td align="center" valign="top"> </td><td align="center" valign="top">Y</td></tr></tbody></table></div><p title="Color Sample Location.">
</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="re16.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch02s05.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="re18.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">V4L2_PIX_FMT_YUV422P ('422P') </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_NV12 ('NV12'), V4L2_PIX_FMT_NV21 ('NV21')</td></tr></table></div></body></html>
