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linux/Documentation/DocBook/media/v4l/pixfmt-packed-yuv.xml
Sylwester Nawrocki c6401af669 [media] Remove unneeded comments from the media API DocBook files 
This removes comment tags intended for emacs configuration from
67 files in the Media API DocBook. Such comments are not really
helpful and violate  the coding style rules.

Signed-off-by: Sylwester Nawrocki <snjw23@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-12-11 09:16:53 -02:00

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<refentry id="packed-yuv">
<refmeta>
<refentrytitle>Packed YUV formats</refentrytitle>
&manvol;
</refmeta>
<refnamediv>
<refname>Packed YUV formats</refname>
<refpurpose>Packed YUV formats</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<para>Similar to the packed RGB formats these formats store
the Y, Cb and Cr component of each pixel in one 16 or 32 bit
word.</para>
<table pgwide="1" frame="none">
<title>Packed YUV Image Formats</title>
<tgroup cols="37" align="center">
<colspec colname="id" align="left" />
<colspec colname="fourcc" />
<colspec colname="bit" />
<colspec colnum="4" colname="b07" align="center" />
<colspec colnum="5" colname="b06" align="center" />
<colspec colnum="6" colname="b05" align="center" />
<colspec colnum="7" colname="b04" align="center" />
<colspec colnum="8" colname="b03" align="center" />
<colspec colnum="9" colname="b02" align="center" />
<colspec colnum="10" colname="b01" align="center" />
<colspec colnum="11" colname="b00" align="center" />
<colspec colnum="13" colname="b17" align="center" />
<colspec colnum="14" colname="b16" align="center" />
<colspec colnum="15" colname="b15" align="center" />
<colspec colnum="16" colname="b14" align="center" />
<colspec colnum="17" colname="b13" align="center" />
<colspec colnum="18" colname="b12" align="center" />
<colspec colnum="19" colname="b11" align="center" />
<colspec colnum="20" colname="b10" align="center" />
<colspec colnum="22" colname="b27" align="center" />
<colspec colnum="23" colname="b26" align="center" />
<colspec colnum="24" colname="b25" align="center" />
<colspec colnum="25" colname="b24" align="center" />
<colspec colnum="26" colname="b23" align="center" />
<colspec colnum="27" colname="b22" align="center" />
<colspec colnum="28" colname="b21" align="center" />
<colspec colnum="29" colname="b20" align="center" />
<colspec colnum="31" colname="b37" align="center" />
<colspec colnum="32" colname="b36" align="center" />
<colspec colnum="33" colname="b35" align="center" />
<colspec colnum="34" colname="b34" align="center" />
<colspec colnum="35" colname="b33" align="center" />
<colspec colnum="36" colname="b32" align="center" />
<colspec colnum="37" colname="b31" align="center" />
<colspec colnum="38" colname="b30" align="center" />
<spanspec namest="b07" nameend="b00" spanname="b0" />
<spanspec namest="b17" nameend="b10" spanname="b1" />
<spanspec namest="b27" nameend="b20" spanname="b2" />
<spanspec namest="b37" nameend="b30" spanname="b3" />
<thead>
<row>
<entry>Identifier</entry>
<entry>Code</entry>
<entry>&nbsp;</entry>
<entry spanname="b0">Byte&nbsp;0 in memory</entry>
<entry spanname="b1">Byte&nbsp;1</entry>
<entry spanname="b2">Byte&nbsp;2</entry>
<entry spanname="b3">Byte&nbsp;3</entry>
</row>
<row>
<entry>&nbsp;</entry>
<entry>&nbsp;</entry>
<entry>Bit</entry>
<entry>7</entry>
<entry>6</entry>
<entry>5</entry>
<entry>4</entry>
<entry>3</entry>
<entry>2</entry>
<entry>1</entry>
<entry>0</entry>
<entry>&nbsp;</entry>
<entry>7</entry>
<entry>6</entry>
<entry>5</entry>
<entry>4</entry>
<entry>3</entry>
<entry>2</entry>
<entry>1</entry>
<entry>0</entry>
<entry>&nbsp;</entry>
<entry>7</entry>
<entry>6</entry>
<entry>5</entry>
<entry>4</entry>
<entry>3</entry>
<entry>2</entry>
<entry>1</entry>
<entry>0</entry>
<entry>&nbsp;</entry>
<entry>7</entry>
<entry>6</entry>
<entry>5</entry>
<entry>4</entry>
<entry>3</entry>
<entry>2</entry>
<entry>1</entry>
<entry>0</entry>
</row>
</thead>
<tbody valign="top">
<row id="V4L2-PIX-FMT-YUV444">
<entry><constant>V4L2_PIX_FMT_YUV444</constant></entry>
<entry>'Y444'</entry>
<entry></entry>
<entry>Cb<subscript>3</subscript></entry>
<entry>Cb<subscript>2</subscript></entry>
<entry>Cb<subscript>1</subscript></entry>
<entry>Cb<subscript>0</subscript></entry>
<entry>Cr<subscript>3</subscript></entry>
<entry>Cr<subscript>2</subscript></entry>
<entry>Cr<subscript>1</subscript></entry>
<entry>Cr<subscript>0</subscript></entry>
<entry></entry>
<entry>a<subscript>3</subscript></entry>
<entry>a<subscript>2</subscript></entry>
<entry>a<subscript>1</subscript></entry>
<entry>a<subscript>0</subscript></entry>
<entry>Y'<subscript>3</subscript></entry>
<entry>Y'<subscript>2</subscript></entry>
<entry>Y'<subscript>1</subscript></entry>
<entry>Y'<subscript>0</subscript></entry>
</row>
<row id="V4L2-PIX-FMT-YUV555">
<entry><constant>V4L2_PIX_FMT_YUV555</constant></entry>
<entry>'YUVO'</entry>
<entry></entry>
<entry>Cb<subscript>2</subscript></entry>
<entry>Cb<subscript>1</subscript></entry>
<entry>Cb<subscript>0</subscript></entry>
<entry>Cr<subscript>4</subscript></entry>
<entry>Cr<subscript>3</subscript></entry>
<entry>Cr<subscript>2</subscript></entry>
<entry>Cr<subscript>1</subscript></entry>
<entry>Cr<subscript>0</subscript></entry>
<entry></entry>
<entry>a</entry>
<entry>Y'<subscript>4</subscript></entry>
<entry>Y'<subscript>3</subscript></entry>
<entry>Y'<subscript>2</subscript></entry>
<entry>Y'<subscript>1</subscript></entry>
<entry>Y'<subscript>0</subscript></entry>
<entry>Cb<subscript>4</subscript></entry>
<entry>Cb<subscript>3</subscript></entry>
</row>
<row id="V4L2-PIX-FMT-YUV565">
<entry><constant>V4L2_PIX_FMT_YUV565</constant></entry>
<entry>'YUVP'</entry>
<entry></entry>
<entry>Cb<subscript>2</subscript></entry>
<entry>Cb<subscript>1</subscript></entry>
<entry>Cb<subscript>0</subscript></entry>
<entry>Cr<subscript>4</subscript></entry>
<entry>Cr<subscript>3</subscript></entry>
<entry>Cr<subscript>2</subscript></entry>
<entry>Cr<subscript>1</subscript></entry>
<entry>Cr<subscript>0</subscript></entry>
<entry></entry>
<entry>Y'<subscript>4</subscript></entry>
<entry>Y'<subscript>3</subscript></entry>
<entry>Y'<subscript>2</subscript></entry>
<entry>Y'<subscript>1</subscript></entry>
<entry>Y'<subscript>0</subscript></entry>
<entry>Cb<subscript>5</subscript></entry>
<entry>Cb<subscript>4</subscript></entry>
<entry>Cb<subscript>3</subscript></entry>
</row>
<row id="V4L2-PIX-FMT-YUV32">
<entry><constant>V4L2_PIX_FMT_YUV32</constant></entry>
<entry>'YUV4'</entry>
<entry></entry>
<entry>a<subscript>7</subscript></entry>
<entry>a<subscript>6</subscript></entry>
<entry>a<subscript>5</subscript></entry>
<entry>a<subscript>4</subscript></entry>
<entry>a<subscript>3</subscript></entry>
<entry>a<subscript>2</subscript></entry>
<entry>a<subscript>1</subscript></entry>
<entry>a<subscript>0</subscript></entry>
<entry></entry>
<entry>Y'<subscript>7</subscript></entry>
<entry>Y'<subscript>6</subscript></entry>
<entry>Y'<subscript>5</subscript></entry>
<entry>Y'<subscript>4</subscript></entry>
<entry>Y'<subscript>3</subscript></entry>
<entry>Y'<subscript>2</subscript></entry>
<entry>Y'<subscript>1</subscript></entry>
<entry>Y'<subscript>0</subscript></entry>
<entry></entry>
<entry>Cb<subscript>7</subscript></entry>
<entry>Cb<subscript>6</subscript></entry>
<entry>Cb<subscript>5</subscript></entry>
<entry>Cb<subscript>4</subscript></entry>
<entry>Cb<subscript>3</subscript></entry>
<entry>Cb<subscript>2</subscript></entry>
<entry>Cb<subscript>1</subscript></entry>
<entry>Cb<subscript>0</subscript></entry>
<entry></entry>
<entry>Cr<subscript>7</subscript></entry>
<entry>Cr<subscript>6</subscript></entry>
<entry>Cr<subscript>5</subscript></entry>
<entry>Cr<subscript>4</subscript></entry>
<entry>Cr<subscript>3</subscript></entry>
<entry>Cr<subscript>2</subscript></entry>
<entry>Cr<subscript>1</subscript></entry>
<entry>Cr<subscript>0</subscript></entry>
</row>
</tbody>
</tgroup>
</table>
<para>Bit 7 is the most significant bit. The value of a = alpha
bits is undefined when reading from the driver, ignored when writing
to the driver, except when alpha blending has been negotiated for a
<link linkend="overlay">Video Overlay</link> or <link
linkend="osd">Video Output Overlay</link>.</para>
</refsect1>
</refentry>
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