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Diffstat (limited to 'Documentation/DocBook/media/v4l/pixfmt-yvu420m.xml')
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diff --git a/Documentation/DocBook/media/v4l/pixfmt-yvu420m.xml b/Documentation/DocBook/media/v4l/pixfmt-yvu420m.xml deleted file mode 100644 index 2330667907c7..000000000000 --- a/Documentation/DocBook/media/v4l/pixfmt-yvu420m.xml +++ /dev/null @@ -1,154 +0,0 @@ - <refentry id="V4L2-PIX-FMT-YVU420M"> - <refmeta> - <refentrytitle>V4L2_PIX_FMT_YVU420M ('YM21')</refentrytitle> - &manvol; - </refmeta> - <refnamediv> - <refname> <constant>V4L2_PIX_FMT_YVU420M</constant></refname> - <refpurpose>Variation of <constant>V4L2_PIX_FMT_YVU420</constant> - with planes non contiguous in memory. </refpurpose> - </refnamediv> - - <refsect1> - <title>Description</title> - - <para>This is a multi-planar format, as opposed to a packed format. -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 Cr data -constitutes the second plane which is half the width and half -the height of the Y plane (and of the image). Each Cr belongs to four -pixels, a two-by-two square of the image. For example, -Cr<subscript>0</subscript> belongs to Y'<subscript>00</subscript>, -Y'<subscript>01</subscript>, Y'<subscript>10</subscript>, and -Y'<subscript>11</subscript>. The Cb data, just like the Cr plane, constitutes -the third plane. </para> - - <para>If the Y plane has pad bytes after each row, then the Cr -and Cb planes have half as many pad bytes after their rows. In other -words, two Cx rows (including padding) is exactly as long as one Y row -(including padding).</para> - - <para><constant>V4L2_PIX_FMT_YVU420M</constant> is intended to be -used only in drivers and applications that support the multi-planar API, -described in <xref linkend="planar-apis"/>. </para> - - <example> - <title><constant>V4L2_PIX_FMT_YVU420M</constant> 4 × 4 -pixel image</title> - - <formalpara> - <title>Byte Order.</title> - <para>Each cell is one byte. - <informaltable frame="none"> - <tgroup cols="5" align="center"> - <colspec align="left" colwidth="2*" /> - <tbody valign="top"> - <row> - <entry>start0 + 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>start0 + 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>start0 + 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>start0 + 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></entry></row> - <row> - <entry>start1 + 0:</entry> - <entry>Cr<subscript>00</subscript></entry> - <entry>Cr<subscript>01</subscript></entry> - </row> - <row> - <entry>start1 + 2:</entry> - <entry>Cr<subscript>10</subscript></entry> - <entry>Cr<subscript>11</subscript></entry> - </row> - <row><entry></entry></row> - <row> - <entry>start2 + 0:</entry> - <entry>Cb<subscript>00</subscript></entry> - <entry>Cb<subscript>01</subscript></entry> - </row> - <row> - <entry>start2 + 2:</entry> - <entry>Cb<subscript>10</subscript></entry> - <entry>Cb<subscript>11</subscript></entry> - </row> - </tbody> - </tgroup> - </informaltable> - </para> - </formalpara> - - <formalpara> - <title>Color Sample Location.</title> - <para> - <informaltable frame="none"> - <tgroup cols="7" 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> - </row> - <row> - <entry>0</entry> - <entry>Y</entry><entry></entry><entry>Y</entry><entry></entry> - <entry>Y</entry><entry></entry><entry>Y</entry> - </row> - <row> - <entry></entry> - <entry></entry><entry>C</entry><entry></entry><entry></entry> - <entry></entry><entry>C</entry><entry></entry> - </row> - <row> - <entry>1</entry> - <entry>Y</entry><entry></entry><entry>Y</entry><entry></entry> - <entry>Y</entry><entry></entry><entry>Y</entry> - </row> - <row> - <entry></entry> - </row> - <row> - <entry>2</entry> - <entry>Y</entry><entry></entry><entry>Y</entry><entry></entry> - <entry>Y</entry><entry></entry><entry>Y</entry> - </row> - <row> - <entry></entry> - <entry></entry><entry>C</entry><entry></entry><entry></entry> - <entry></entry><entry>C</entry><entry></entry> - </row> - <row> - <entry>3</entry> - <entry>Y</entry><entry></entry><entry>Y</entry><entry></entry> - <entry>Y</entry><entry></entry><entry>Y</entry> - </row> - </tbody> - </tgroup> - </informaltable> - </para> - </formalpara> - </example> - </refsect1> - </refentry> |