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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>