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<refentry>
<refmeta>
<refentrytitle>V4L2_PIX_FMT_NV24 ('NV24'), V4L2_PIX_FMT_NV42 ('NV42')</refentrytitle>
&manvol;
</refmeta>
<refnamediv>
<refname id="V4L2-PIX-FMT-NV24"><constant>V4L2_PIX_FMT_NV24</constant></refname>
<refname id="V4L2-PIX-FMT-NV42"><constant>V4L2_PIX_FMT_NV42</constant></refname>
<refpurpose>Formats with full horizontal and vertical
chroma resolutions, also known as YUV 4:4:4. One luminance and one
chrominance plane with alternating chroma samples as opposed to
<constant>V4L2_PIX_FMT_YVU420</constant></refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<para>These are two-plane versions of the YUV 4:4:4 format. The three
components are separated into two sub-images or planes. The Y plane is
first, with each Y sample stored in one byte per pixel. For
<constant>V4L2_PIX_FMT_NV24</constant>, a combined CbCr plane
immediately follows the Y plane in memory. The CbCr plane has the same
width and height, in pixels, as the Y plane (and the image). Each line
contains one CbCr pair per pixel, with each Cb and Cr sample stored in
one byte. <constant>V4L2_PIX_FMT_NV42</constant> is the same except that
the Cb and Cr samples are swapped, the CrCb plane starts with a Cr
sample.</para>
<para>If the Y plane has pad bytes after each row, then the CbCr plane
has twice as many pad bytes after its rows.</para>
<example>
<title><constant>V4L2_PIX_FMT_NV24</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>Y'<subscript>00</subscript></entry>
<entry>Y'<subscript>01</subscript></entry>
<entry>Y'<subscript>02</subscript></entry>
<entry>Y'<subscript>03</subscript></entry>
</row>
<row>
<entry>start + 4:</entry>
<entry>Y'<subscript>10</subscript></entry>
<entry>Y'<subscript>11</subscript></entry>
<entry>Y'<subscript>12</subscript></entry>
<entry>Y'<subscript>13</subscript></entry>
</row>
<row>
<entry>start + 8:</entry>
<entry>Y'<subscript>20</subscript></entry>
<entry>Y'<subscript>21</subscript></entry>
<entry>Y'<subscript>22</subscript></entry>
<entry>Y'<subscript>23</subscript></entry>
</row>
<row>
<entry>start + 12:</entry>
<entry>Y'<subscript>30</subscript></entry>
<entry>Y'<subscript>31</subscript></entry>
<entry>Y'<subscript>32</subscript></entry>
<entry>Y'<subscript>33</subscript></entry>
</row>
<row>
<entry>start + 16:</entry>
<entry>Cb<subscript>00</subscript></entry>
<entry>Cr<subscript>00</subscript></entry>
<entry>Cb<subscript>01</subscript></entry>
<entry>Cr<subscript>01</subscript></entry>
<entry>Cb<subscript>02</subscript></entry>
<entry>Cr<subscript>02</subscript></entry>
<entry>Cb<subscript>03</subscript></entry>
<entry>Cr<subscript>03</subscript></entry>
</row>
<row>
<entry>start + 24:</entry>
<entry>Cb<subscript>10</subscript></entry>
<entry>Cr<subscript>10</subscript></entry>
<entry>Cb<subscript>11</subscript></entry>
<entry>Cr<subscript>11</subscript></entry>
<entry>Cb<subscript>12</subscript></entry>
<entry>Cr<subscript>12</subscript></entry>
<entry>Cb<subscript>13</subscript></entry>
<entry>Cr<subscript>13</subscript></entry>
</row>
<row>
<entry>start + 32:</entry>
<entry>Cb<subscript>20</subscript></entry>
<entry>Cr<subscript>20</subscript></entry>
<entry>Cb<subscript>21</subscript></entry>
<entry>Cr<subscript>21</subscript></entry>
<entry>Cb<subscript>22</subscript></entry>
<entry>Cr<subscript>22</subscript></entry>
<entry>Cb<subscript>23</subscript></entry>
<entry>Cr<subscript>23</subscript></entry>
</row>
<row>
<entry>start + 40:</entry>
<entry>Cb<subscript>30</subscript></entry>
<entry>Cr<subscript>30</subscript></entry>
<entry>Cb<subscript>31</subscript></entry>
<entry>Cr<subscript>31</subscript></entry>
<entry>Cb<subscript>32</subscript></entry>
<entry>Cr<subscript>32</subscript></entry>
<entry>Cb<subscript>33</subscript></entry>
<entry>Cr<subscript>33</subscript></entry>
</row>
</tbody>
</tgroup>
</informaltable>
</para>
</formalpara>
</example>
</refsect1>
</refentry>
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