1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>V4L2_PIX_FMT_NV16M ('NM16'), V4L2_PIX_FMT_NV61M ('NM61')</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="re33.html" title="V4L2_PIX_FMT_NV16 ('NV16'), V4L2_PIX_FMT_NV61 ('NV61')"><link rel="next" href="re35.html" title="V4L2_PIX_FMT_NV24 ('NV24'), V4L2_PIX_FMT_NV42 ('NV42')"></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_NV16M ('NM16'), V4L2_PIX_FMT_NV61M ('NM61')</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re33.html">Prev</a> </td><th width="60%" align="center">YUV Formats</th><td width="20%" align="right"> <a accesskey="n" href="re35.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="idp1102663188"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p><code class="constant">V4L2_PIX_FMT_NV16M</code>, <code class="constant">V4L2_PIX_FMT_NV61M</code> — Variation of <code class="constant">V4L2_PIX_FMT_NV16</code> and <code class="constant">V4L2_PIX_FMT_NV61</code> with planes 2 non contiguous in memory. </p></div><div class="refsect1"><a name="idp1102660988"></a><h2>Description</h2><p>This is a multi-planar, two-plane version of the YUV 4:2:2 format. 3The three components are separated into two sub-images or planes. 4<code class="constant">V4L2_PIX_FMT_NV16M</code> differs from <code class="constant">V4L2_PIX_FMT_NV16 5</code> in that the two planes are non-contiguous in memory, i.e. the chroma 6plane does not necessarily immediately follow the luma plane. 7The luminance data occupies the first plane. The Y plane has one byte per pixel. 8In the second plane there is chrominance data with alternating chroma samples. 9The CbCr plane is the same width and height, in bytes, as the Y plane. 10Each CbCr pair belongs to two pixels. For example, 11Cb<sub>0</sub>/Cr<sub>0</sub> belongs to 12Y'<sub>00</sub>, Y'<sub>01</sub>. 13<code class="constant">V4L2_PIX_FMT_NV61M</code> is the same as <code class="constant">V4L2_PIX_FMT_NV16M</code> 14except the Cb and Cr bytes are swapped, the CrCb plane starts with a Cr byte.</p><p><code class="constant">V4L2_PIX_FMT_NV16M</code> and 15<code class="constant">V4L2_PIX_FMT_NV61M</code> are intended to be used only in drivers 16and applications that support the multi-planar API, described in 17<a class="xref" href="planar-apis.html" title="Single- and multi-planar APIs">the section called “Single- and multi-planar APIs”</a>. </p><div class="example"><a name="idp1102734580"></a><p class="title"><b>Example 2.31. <code class="constant">V4L2_PIX_FMT_NV16M</code> 4 × 4 pixel image</b></p><div class="example-contents"><p><b>Byte Order. </b>Each cell is one byte. 18 </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">start0 + 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">start0 + 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">start0 + 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">start0 + 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"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td></tr><tr><td align="left" valign="top">start1 + 0:</td><td align="center" valign="top">Cb<sub>00</sub></td><td align="center" valign="top">Cr<sub>00</sub></td><td align="center" valign="top">Cb<sub>02</sub></td><td align="center" valign="top">Cr<sub>02</sub></td></tr><tr><td align="left" valign="top">start1 + 4:</td><td align="center" valign="top">Cb<sub>10</sub></td><td align="center" valign="top">Cr<sub>10</sub></td><td align="center" valign="top">Cb<sub>12</sub></td><td align="center" valign="top">Cr<sub>12</sub></td></tr><tr><td align="left" valign="top">start1 + 8:</td><td align="center" valign="top">Cb<sub>20</sub></td><td align="center" valign="top">Cr<sub>20</sub></td><td align="center" valign="top">Cb<sub>22</sub></td><td align="center" valign="top">Cr<sub>22</sub></td></tr><tr><td align="left" valign="top">start1 + 12:</td><td align="center" valign="top">Cb<sub>30</sub></td><td align="center" valign="top">Cr<sub>30</sub></td><td align="center" valign="top">Cb<sub>32</sub></td><td align="center" valign="top">Cr<sub>32</sub></td></tr></tbody></table></div><p> 19 </p><p><b>Color Sample Location. </b> 20 </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"> </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"> </td><td align="center" valign="top"> </td><td align="center" valign="top">C</td><td align="center" valign="top"> </td><td align="center" valign="top"> </td><td align="center" valign="top"> </td><td align="center" valign="top">C</td><td align="center" valign="top"> </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"> </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"> </td><td align="center" valign="top"> </td><td align="center" valign="top">C</td><td align="center" valign="top"> </td><td align="center" valign="top"> </td><td align="center" valign="top"> </td><td align="center" valign="top">C</td><td align="center" valign="top"> </td></tr><tr><td align="center" valign="top"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </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"> </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"> </td><td align="center" valign="top"> </td><td align="center" valign="top">C</td><td align="center" valign="top"> </td><td align="center" valign="top"> </td><td align="center" valign="top"> </td><td align="center" valign="top">C</td><td align="center" valign="top"> </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"> </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"> </td><td align="center" valign="top"> </td><td align="center" valign="top">C</td><td align="center" valign="top"> </td><td align="center" valign="top"> </td><td align="center" valign="top"> </td><td align="center" valign="top">C</td><td align="center" valign="top"> </td></tr></tbody></table></div><p> 21 </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="re33.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="re35.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">V4L2_PIX_FMT_NV16 ('NV16'), V4L2_PIX_FMT_NV61 ('NV61') </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_NV24 ('NV24'), V4L2_PIX_FMT_NV42 ('NV42')</td></tr></table></div></body></html> 22