| <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd"> |
| <HTML |
| ><HEAD |
| ><TITLE |
| >V4L2_PIX_FMT_YUV411P ('411P')</TITLE |
| ><META |
| NAME="GENERATOR" |
| CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK |
| REL="HOME" |
| TITLE="Video for Linux Two API Specification" |
| HREF="book1.htm"><LINK |
| REL="UP" |
| TITLE="YUV Formats" |
| HREF="x3891.htm"><LINK |
| REL="PREVIOUS" |
| TITLE="V4L2_PIX_FMT_YUV422P ('422P')" |
| HREF="r5154.htm"><LINK |
| REL="NEXT" |
| TITLE="V4L2_PIX_FMT_NV12 ('NV12'), V4L2_PIX_FMT_NV21 ('NV21')" |
| HREF="r5470.htm"></HEAD |
| ><BODY |
| CLASS="REFENTRY" |
| BGCOLOR="#FFFFFF" |
| TEXT="#000000" |
| LINK="#0000FF" |
| VLINK="#840084" |
| ALINK="#0000FF" |
| ><DIV |
| CLASS="NAVHEADER" |
| ><TABLE |
| SUMMARY="Header navigation table" |
| WIDTH="100%" |
| BORDER="0" |
| CELLPADDING="0" |
| CELLSPACING="0" |
| ><TR |
| ><TH |
| COLSPAN="3" |
| ALIGN="center" |
| >Video for Linux Two API Specification: Revision 0.24</TH |
| ></TR |
| ><TR |
| ><TD |
| WIDTH="10%" |
| ALIGN="left" |
| VALIGN="bottom" |
| ><A |
| HREF="r5154.htm" |
| ACCESSKEY="P" |
| >Prev</A |
| ></TD |
| ><TD |
| WIDTH="80%" |
| ALIGN="center" |
| VALIGN="bottom" |
| ></TD |
| ><TD |
| WIDTH="10%" |
| ALIGN="right" |
| VALIGN="bottom" |
| ><A |
| HREF="r5470.htm" |
| ACCESSKEY="N" |
| >Next</A |
| ></TD |
| ></TR |
| ></TABLE |
| ><HR |
| ALIGN="LEFT" |
| WIDTH="100%"></DIV |
| ><H1 |
| ><A |
| NAME="V4L2-PIX-FMT-YUV411P" |
| ></A |
| >V4L2_PIX_FMT_YUV411P ('411P')</H1 |
| ><DIV |
| CLASS="REFNAMEDIV" |
| ><A |
| NAME="AEN5323" |
| ></A |
| ><H2 |
| >Name</H2 |
| ><CODE |
| CLASS="CONSTANT" |
| >V4L2_PIX_FMT_YUV411P</CODE |
| > -- Format with ¼ horizontal chroma resolution, |
| also known as YUV 4:1:1. Planar layout as opposed to |
| <CODE |
| CLASS="CONSTANT" |
| >V4L2_PIX_FMT_Y41P</CODE |
| ></DIV |
| ><DIV |
| CLASS="REFSECT1" |
| ><A |
| NAME="AEN5328" |
| ></A |
| ><H2 |
| >Description</H2 |
| ><P |
| >This format is not commonly used. This is a planar |
| format similar to the 4:2:2 planar format except with half as many |
| chroma. 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 |
| Cb plane immediately follows the Y plane in memory. The Cb plane is |
| ¼ the width of the Y plane (and of the image). Each Cb belongs |
| to 4 pixels all on the same row. For example, |
| Cb<SUB |
| >0</SUB |
| > belongs to Y'<SUB |
| >00</SUB |
| >, |
| Y'<SUB |
| >01</SUB |
| >, Y'<SUB |
| >02</SUB |
| > and |
| Y'<SUB |
| >03</SUB |
| >. Following the Cb plane is the Cr plane, |
| just like the Cb plane.</P |
| ><P |
| >If the Y plane has pad bytes after each row, then the Cr |
| and Cb planes have ¼ as many pad bytes after their rows. In |
| other words, four C x rows (including padding) is exactly as long as |
| one Y row (including padding).</P |
| ><DIV |
| CLASS="EXAMPLE" |
| ><A |
| NAME="AEN5337" |
| ></A |
| ><P |
| ><B |
| >Example 2-1. <CODE |
| CLASS="CONSTANT" |
| >V4L2_PIX_FMT_YUV411P</CODE |
| > 4 × 4 |
| pixel image</B |
| ></P |
| ><DIV |
| CLASS="FORMALPARA" |
| ><P |
| ><B |
| >Byte Order. </B |
| >Each cell is one byte. |
| <DIV |
| CLASS="INFORMALTABLE" |
| ><P |
| ></P |
| ><A |
| NAME="AEN5343" |
| ></A |
| ><TABLE |
| BORDER="0" |
| FRAME="void" |
| CLASS="CALSTABLE" |
| ><COL |
| WIDTH="2*" |
| ALIGN="LEFT"><COL><COL><COL><COL><TBODY |
| VALIGN="TOP" |
| ><TR |
| ><TD |
| >start + 0:</TD |
| ><TD |
| >Y'<SUB |
| >00</SUB |
| ></TD |
| ><TD |
| >Y'<SUB |
| >01</SUB |
| ></TD |
| ><TD |
| >Y'<SUB |
| >02</SUB |
| ></TD |
| ><TD |
| >Y'<SUB |
| >03</SUB |
| ></TD |
| ></TR |
| ><TR |
| ><TD |
| >start + 4:</TD |
| ><TD |
| >Y'<SUB |
| >10</SUB |
| ></TD |
| ><TD |
| >Y'<SUB |
| >11</SUB |
| ></TD |
| ><TD |
| >Y'<SUB |
| >12</SUB |
| ></TD |
| ><TD |
| >Y'<SUB |
| >13</SUB |
| ></TD |
| ></TR |
| ><TR |
| ><TD |
| >start + 8:</TD |
| ><TD |
| >Y'<SUB |
| >20</SUB |
| ></TD |
| ><TD |
| >Y'<SUB |
| >21</SUB |
| ></TD |
| ><TD |
| >Y'<SUB |
| >22</SUB |
| ></TD |
| ><TD |
| >Y'<SUB |
| >23</SUB |
| ></TD |
| ></TR |
| ><TR |
| ><TD |
| >start + 12:</TD |
| ><TD |
| >Y'<SUB |
| >30</SUB |
| ></TD |
| ><TD |
| >Y'<SUB |
| >31</SUB |
| ></TD |
| ><TD |
| >Y'<SUB |
| >32</SUB |
| ></TD |
| ><TD |
| >Y'<SUB |
| >33</SUB |
| ></TD |
| ></TR |
| ><TR |
| ><TD |
| >start + 16:</TD |
| ><TD |
| >Cb<SUB |
| >00</SUB |
| ></TD |
| ><TD |
| > </TD |
| ><TD |
| > </TD |
| ><TD |
| > </TD |
| ></TR |
| ><TR |
| ><TD |
| >start + 17:</TD |
| ><TD |
| >Cb<SUB |
| >10</SUB |
| ></TD |
| ><TD |
| > </TD |
| ><TD |
| > </TD |
| ><TD |
| > </TD |
| ></TR |
| ><TR |
| ><TD |
| >start + 18:</TD |
| ><TD |
| >Cb<SUB |
| >20</SUB |
| ></TD |
| ><TD |
| > </TD |
| ><TD |
| > </TD |
| ><TD |
| > </TD |
| ></TR |
| ><TR |
| ><TD |
| >start + 19:</TD |
| ><TD |
| >Cb<SUB |
| >30</SUB |
| ></TD |
| ><TD |
| > </TD |
| ><TD |
| > </TD |
| ><TD |
| > </TD |
| ></TR |
| ><TR |
| ><TD |
| >start + 20:</TD |
| ><TD |
| >Cr<SUB |
| >00</SUB |
| ></TD |
| ><TD |
| > </TD |
| ><TD |
| > </TD |
| ><TD |
| > </TD |
| ></TR |
| ><TR |
| ><TD |
| >start + 21:</TD |
| ><TD |
| >Cr<SUB |
| >10</SUB |
| ></TD |
| ><TD |
| > </TD |
| ><TD |
| > </TD |
| ><TD |
| > </TD |
| ></TR |
| ><TR |
| ><TD |
| >start + 22:</TD |
| ><TD |
| >Cr<SUB |
| >20</SUB |
| ></TD |
| ><TD |
| > </TD |
| ><TD |
| > </TD |
| ><TD |
| > </TD |
| ></TR |
| ><TR |
| ><TD |
| >start + 23:</TD |
| ><TD |
| >Cr<SUB |
| >30</SUB |
| ></TD |
| ><TD |
| > </TD |
| ><TD |
| > </TD |
| ><TD |
| > </TD |
| ></TR |
| ></TBODY |
| ></TABLE |
| ><P |
| ></P |
| ></DIV |
| > |
| </P |
| ></DIV |
| ><DIV |
| CLASS="FORMALPARA" |
| ><P |
| ><B |
| >Color Sample Location. </B |
| > <DIV |
| CLASS="INFORMALTABLE" |
| ><P |
| ></P |
| ><A |
| NAME="AEN5422" |
| ></A |
| ><TABLE |
| BORDER="0" |
| FRAME="void" |
| CLASS="CALSTABLE" |
| ><COL><COL><COL><COL><COL><COL><COL><TBODY |
| VALIGN="TOP" |
| ><TR |
| ><TD |
| > </TD |
| ><TD |
| >0</TD |
| ><TD |
| > </TD |
| ><TD |
| >1</TD |
| ><TD |
| > </TD |
| ><TD |
| >2</TD |
| ><TD |
| > </TD |
| ><TD |
| >3</TD |
| ></TR |
| ><TR |
| ><TD |
| >0</TD |
| ><TD |
| >Y</TD |
| ><TD |
| > </TD |
| ><TD |
| >Y</TD |
| ><TD |
| >C</TD |
| ><TD |
| >Y</TD |
| ><TD |
| > </TD |
| ><TD |
| >Y</TD |
| ></TR |
| ><TR |
| ><TD |
| >1</TD |
| ><TD |
| >Y</TD |
| ><TD |
| > </TD |
| ><TD |
| >Y</TD |
| ><TD |
| >C</TD |
| ><TD |
| >Y</TD |
| ><TD |
| > </TD |
| ><TD |
| >Y</TD |
| ></TR |
| ><TR |
| ><TD |
| >2</TD |
| ><TD |
| >Y</TD |
| ><TD |
| > </TD |
| ><TD |
| >Y</TD |
| ><TD |
| >C</TD |
| ><TD |
| >Y</TD |
| ><TD |
| > </TD |
| ><TD |
| >Y</TD |
| ></TR |
| ><TR |
| ><TD |
| >3</TD |
| ><TD |
| >Y</TD |
| ><TD |
| > </TD |
| ><TD |
| >Y</TD |
| ><TD |
| >C</TD |
| ><TD |
| >Y</TD |
| ><TD |
| > </TD |
| ><TD |
| >Y</TD |
| ></TR |
| ></TBODY |
| ></TABLE |
| ><P |
| ></P |
| ></DIV |
| > |
| </P |
| ></DIV |
| ></DIV |
| ></DIV |
| ><DIV |
| CLASS="NAVFOOTER" |
| ><HR |
| ALIGN="LEFT" |
| WIDTH="100%"><TABLE |
| SUMMARY="Footer navigation table" |
| WIDTH="100%" |
| BORDER="0" |
| CELLPADDING="0" |
| CELLSPACING="0" |
| ><TR |
| ><TD |
| WIDTH="33%" |
| ALIGN="left" |
| VALIGN="top" |
| ><A |
| HREF="r5154.htm" |
| ACCESSKEY="P" |
| >Prev</A |
| ></TD |
| ><TD |
| WIDTH="34%" |
| ALIGN="center" |
| VALIGN="top" |
| ><A |
| HREF="book1.htm" |
| ACCESSKEY="H" |
| >Home</A |
| ></TD |
| ><TD |
| WIDTH="33%" |
| ALIGN="right" |
| VALIGN="top" |
| ><A |
| HREF="r5470.htm" |
| ACCESSKEY="N" |
| >Next</A |
| ></TD |
| ></TR |
| ><TR |
| ><TD |
| WIDTH="33%" |
| ALIGN="left" |
| VALIGN="top" |
| >V4L2_PIX_FMT_YUV422P ('422P')</TD |
| ><TD |
| WIDTH="34%" |
| ALIGN="center" |
| VALIGN="top" |
| ><A |
| HREF="x3891.htm" |
| ACCESSKEY="U" |
| >Up</A |
| ></TD |
| ><TD |
| WIDTH="33%" |
| ALIGN="right" |
| VALIGN="top" |
| >V4L2_PIX_FMT_NV12 ('NV12'), V4L2_PIX_FMT_NV21 ('NV21')</TD |
| ></TR |
| ></TABLE |
| ></DIV |
| ></BODY |
| ></HTML |
| > |