| <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> </entry> |
| <entry spanname="b0">Byte 0 in memory</entry> |
| <entry spanname="b1">Byte 1</entry> |
| <entry spanname="b2">Byte 2</entry> |
| <entry spanname="b3">Byte 3</entry> |
| </row> |
| <row> |
| <entry> </entry> |
| <entry> </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> </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> </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> </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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