1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>Packed RGB formats</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="LINUX MEDIA INFRASTRUCTURE API"><link rel="up" href="pixfmt-rgb.html" title="RGB Formats"><link rel="prev" href="pixfmt-rgb.html" title="RGB Formats"><link rel="next" href="V4L2-PIX-FMT-SBGGR8.html" title="V4L2_PIX_FMT_SBGGR8 ('BA81')"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Packed RGB formats</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="pixfmt-rgb.html">Prev</a> </td><th width="60%" align="center">RGB Formats</th><td width="20%" align="right"> <a accesskey="n" href="V4L2-PIX-FMT-SBGGR8.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="packed-rgb"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>Packed RGB formats — Packed RGB formats</p></div><div class="refsect1"><a name="idp1100666084"></a><h2>Description</h2><p>These formats are designed to match the pixel formats of 2typical PC graphics frame buffers. They occupy 8, 16, 24 or 32 bits 3per pixel. These are all packed-pixel formats, meaning all the data 4for a pixel lie next to each other in memory.</p><div class="table"><a name="rgb-formats"></a><p class="title"><b>Table 2.16. Packed RGB Image Formats</b></p><div class="table-contents"><table summary="Packed RGB Image Formats" width="100%" border="0"><colgroup><col align="left" class="id"><col align="center" class="fourcc"><col align="center" class="bit"><col align="center" class="b07"><col align="center" class="b06"><col align="center" class="b05"><col align="center" class="b04"><col align="center" class="b03"><col align="center" class="b02"><col align="center" class="b01"><col align="center" class="b00"><col><col align="center" class="b17"><col align="center" class="b16"><col align="center" class="b15"><col align="center" class="b14"><col align="center" class="b13"><col align="center" class="b12"><col align="center" class="b11"><col align="center" class="b10"><col><col align="center" class="b27"><col align="center" class="b26"><col align="center" class="b25"><col align="center" class="b24"><col align="center" class="b23"><col align="center" class="b22"><col align="center" class="b21"><col align="center" class="b20"><col><col align="center" class="b37"><col align="center" class="b36"><col align="center" class="b35"><col align="center" class="b34"><col align="center" class="b33"><col align="center" class="b32"><col align="center" class="b31"></colgroup><thead><tr><th align="left">Identifier</th><th align="center">Code</th><th align="center"> </th><th colspan="8" align="center">Byte 0 in memory</th><td class="auto-generated"> </td><th colspan="8" align="center">Byte 1</th><td class="auto-generated"> </td><th colspan="8" align="center">Byte 2</th><td class="auto-generated"> </td><th colspan="8" align="center">Byte 3</th></tr><tr><th align="left"> </th><th align="center"> </th><th align="center">Bit</th><th align="center">7</th><th align="center">6</th><th align="center">5</th><th align="center">4</th><th align="center">3</th><th align="center">2</th><th align="center">1</th><th align="center">0</th><th align="center"> </th><th align="center">7</th><th align="center">6</th><th align="center">5</th><th align="center">4</th><th align="center">3</th><th align="center">2</th><th align="center">1</th><th align="center">0</th><th align="center"> </th><th align="center">7</th><th align="center">6</th><th align="center">5</th><th align="center">4</th><th align="center">3</th><th align="center">2</th><th align="center">1</th><th align="center">0</th><th align="center"> </th><th align="center">7</th><th align="center">6</th><th align="center">5</th><th align="center">4</th><th align="center">3</th><th align="center">2</th><th align="center">1</th><th align="center">0</th></tr></thead><tbody valign="top"><tr><td align="left" valign="top"><a name="V4L2-PIX-FMT-RGB332"></a><code class="constant">V4L2_PIX_FMT_RGB332</code></td><td align="center" valign="top">'RGB1'</td><td align="center" valign="top"> </td><td align="center" valign="top">r<sub>2</sub></td><td align="center" valign="top">r<sub>1</sub></td><td align="center" valign="top">r<sub>0</sub></td><td align="center" valign="top">g<sub>2</sub></td><td align="center" valign="top">g<sub>1</sub></td><td align="center" valign="top">g<sub>0</sub></td><td align="center" valign="top">b<sub>1</sub></td><td align="center" valign="top">b<sub>0</sub></td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td></tr><tr><td align="left" valign="top"><a name="V4L2-PIX-FMT-ARGB444"></a><code class="constant">V4L2_PIX_FMT_ARGB444</code></td><td align="center" valign="top">'AR12'</td><td align="center" valign="top"> </td><td align="center" valign="top">g<sub>3</sub></td><td align="center" valign="top">g<sub>2</sub></td><td align="center" valign="top">g<sub>1</sub></td><td align="center" valign="top">g<sub>0</sub></td><td align="center" valign="top">b<sub>3</sub></td><td align="center" valign="top">b<sub>2</sub></td><td align="center" valign="top">b<sub>1</sub></td><td align="center" valign="top">b<sub>0</sub></td><td align="center" valign="top"> </td><td align="center" valign="top">a<sub>3</sub></td><td align="center" valign="top">a<sub>2</sub></td><td align="center" valign="top">a<sub>1</sub></td><td align="center" valign="top">a<sub>0</sub></td><td align="center" valign="top">r<sub>3</sub></td><td align="center" valign="top">r<sub>2</sub></td><td align="center" valign="top">r<sub>1</sub></td><td align="center" valign="top">r<sub>0</sub></td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td></tr><tr><td align="left" valign="top"><a name="V4L2-PIX-FMT-XRGB444"></a><code class="constant">V4L2_PIX_FMT_XRGB444</code></td><td align="center" valign="top">'XR12'</td><td align="center" valign="top"> </td><td align="center" valign="top">g<sub>3</sub></td><td align="center" valign="top">g<sub>2</sub></td><td align="center" valign="top">g<sub>1</sub></td><td align="center" valign="top">g<sub>0</sub></td><td align="center" valign="top">b<sub>3</sub></td><td align="center" valign="top">b<sub>2</sub></td><td align="center" valign="top">b<sub>1</sub></td><td align="center" valign="top">b<sub>0</sub></td><td align="center" valign="top"> </td><td align="center" valign="top">-</td><td align="center" valign="top">-</td><td align="center" valign="top">-</td><td align="center" valign="top">-</td><td align="center" valign="top">r<sub>3</sub></td><td align="center" valign="top">r<sub>2</sub></td><td align="center" valign="top">r<sub>1</sub></td><td align="center" valign="top">r<sub>0</sub></td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td></tr><tr><td align="left" valign="top"><a name="V4L2-PIX-FMT-ARGB555"></a><code class="constant">V4L2_PIX_FMT_ARGB555</code></td><td align="center" valign="top">'AR15'</td><td align="center" valign="top"> </td><td align="center" valign="top">g<sub>2</sub></td><td align="center" valign="top">g<sub>1</sub></td><td align="center" valign="top">g<sub>0</sub></td><td align="center" valign="top">b<sub>4</sub></td><td align="center" valign="top">b<sub>3</sub></td><td align="center" valign="top">b<sub>2</sub></td><td align="center" valign="top">b<sub>1</sub></td><td align="center" valign="top">b<sub>0</sub></td><td align="center" valign="top"> </td><td align="center" valign="top">a</td><td align="center" valign="top">r<sub>4</sub></td><td align="center" valign="top">r<sub>3</sub></td><td align="center" valign="top">r<sub>2</sub></td><td align="center" valign="top">r<sub>1</sub></td><td align="center" valign="top">r<sub>0</sub></td><td align="center" valign="top">g<sub>4</sub></td><td align="center" valign="top">g<sub>3</sub></td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td></tr><tr><td align="left" valign="top"><a name="V4L2-PIX-FMT-XRGB555"></a><code class="constant">V4L2_PIX_FMT_XRGB555</code></td><td align="center" valign="top">'XR15'</td><td align="center" valign="top"> </td><td align="center" valign="top">g<sub>2</sub></td><td align="center" valign="top">g<sub>1</sub></td><td align="center" valign="top">g<sub>0</sub></td><td align="center" valign="top">b<sub>4</sub></td><td align="center" valign="top">b<sub>3</sub></td><td align="center" valign="top">b<sub>2</sub></td><td align="center" valign="top">b<sub>1</sub></td><td align="center" valign="top">b<sub>0</sub></td><td align="center" valign="top"> </td><td align="center" valign="top">-</td><td align="center" valign="top">r<sub>4</sub></td><td align="center" valign="top">r<sub>3</sub></td><td align="center" valign="top">r<sub>2</sub></td><td align="center" valign="top">r<sub>1</sub></td><td align="center" valign="top">r<sub>0</sub></td><td align="center" valign="top">g<sub>4</sub></td><td align="center" valign="top">g<sub>3</sub></td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td></tr><tr><td align="left" valign="top"><a name="V4L2-PIX-FMT-RGB565"></a><code class="constant">V4L2_PIX_FMT_RGB565</code></td><td align="center" valign="top">'RGBP'</td><td align="center" valign="top"> </td><td align="center" valign="top">g<sub>2</sub></td><td align="center" valign="top">g<sub>1</sub></td><td align="center" valign="top">g<sub>0</sub></td><td align="center" valign="top">b<sub>4</sub></td><td align="center" valign="top">b<sub>3</sub></td><td align="center" valign="top">b<sub>2</sub></td><td align="center" valign="top">b<sub>1</sub></td><td align="center" valign="top">b<sub>0</sub></td><td align="center" valign="top"> </td><td align="center" valign="top">r<sub>4</sub></td><td align="center" valign="top">r<sub>3</sub></td><td align="center" valign="top">r<sub>2</sub></td><td align="center" valign="top">r<sub>1</sub></td><td align="center" valign="top">r<sub>0</sub></td><td align="center" valign="top">g<sub>5</sub></td><td align="center" valign="top">g<sub>4</sub></td><td align="center" valign="top">g<sub>3</sub></td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td></tr><tr><td align="left" valign="top"><a name="V4L2-PIX-FMT-ARGB555X"></a><code class="constant">V4L2_PIX_FMT_ARGB555X</code></td><td align="center" valign="top">'AR15' | (1 << 31)</td><td align="center" valign="top"> </td><td align="center" valign="top">a</td><td align="center" valign="top">r<sub>4</sub></td><td align="center" valign="top">r<sub>3</sub></td><td align="center" valign="top">r<sub>2</sub></td><td align="center" valign="top">r<sub>1</sub></td><td align="center" valign="top">r<sub>0</sub></td><td align="center" valign="top">g<sub>4</sub></td><td align="center" valign="top">g<sub>3</sub></td><td align="center" valign="top"> </td><td align="center" valign="top">g<sub>2</sub></td><td align="center" valign="top">g<sub>1</sub></td><td align="center" valign="top">g<sub>0</sub></td><td align="center" valign="top">b<sub>4</sub></td><td align="center" valign="top">b<sub>3</sub></td><td align="center" valign="top">b<sub>2</sub></td><td align="center" valign="top">b<sub>1</sub></td><td align="center" valign="top">b<sub>0</sub></td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td></tr><tr><td align="left" valign="top"><a name="V4L2-PIX-FMT-XRGB555X"></a><code class="constant">V4L2_PIX_FMT_XRGB555X</code></td><td align="center" valign="top">'XR15' | (1 << 31)</td><td align="center" valign="top"> </td><td align="center" valign="top">-</td><td align="center" valign="top">r<sub>4</sub></td><td align="center" valign="top">r<sub>3</sub></td><td align="center" valign="top">r<sub>2</sub></td><td align="center" valign="top">r<sub>1</sub></td><td align="center" valign="top">r<sub>0</sub></td><td align="center" valign="top">g<sub>4</sub></td><td align="center" valign="top">g<sub>3</sub></td><td align="center" valign="top"> </td><td align="center" valign="top">g<sub>2</sub></td><td align="center" valign="top">g<sub>1</sub></td><td align="center" valign="top">g<sub>0</sub></td><td align="center" valign="top">b<sub>4</sub></td><td align="center" valign="top">b<sub>3</sub></td><td align="center" valign="top">b<sub>2</sub></td><td align="center" valign="top">b<sub>1</sub></td><td align="center" valign="top">b<sub>0</sub></td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td></tr><tr><td align="left" valign="top"><a name="V4L2-PIX-FMT-RGB565X"></a><code class="constant">V4L2_PIX_FMT_RGB565X</code></td><td align="center" valign="top">'RGBR'</td><td align="center" valign="top"> </td><td align="center" valign="top">r<sub>4</sub></td><td align="center" valign="top">r<sub>3</sub></td><td align="center" valign="top">r<sub>2</sub></td><td align="center" valign="top">r<sub>1</sub></td><td align="center" valign="top">r<sub>0</sub></td><td align="center" valign="top">g<sub>5</sub></td><td align="center" valign="top">g<sub>4</sub></td><td align="center" valign="top">g<sub>3</sub></td><td align="center" valign="top"> </td><td align="center" valign="top">g<sub>2</sub></td><td align="center" valign="top">g<sub>1</sub></td><td align="center" valign="top">g<sub>0</sub></td><td align="center" valign="top">b<sub>4</sub></td><td align="center" valign="top">b<sub>3</sub></td><td align="center" valign="top">b<sub>2</sub></td><td align="center" valign="top">b<sub>1</sub></td><td align="center" valign="top">b<sub>0</sub></td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td></tr><tr><td align="left" valign="top"><a name="V4L2-PIX-FMT-BGR24"></a><code class="constant">V4L2_PIX_FMT_BGR24</code></td><td align="center" valign="top">'BGR3'</td><td align="center" valign="top"> </td><td align="center" valign="top">b<sub>7</sub></td><td align="center" valign="top">b<sub>6</sub></td><td align="center" valign="top">b<sub>5</sub></td><td align="center" valign="top">b<sub>4</sub></td><td align="center" valign="top">b<sub>3</sub></td><td align="center" valign="top">b<sub>2</sub></td><td align="center" valign="top">b<sub>1</sub></td><td align="center" valign="top">b<sub>0</sub></td><td align="center" valign="top"> </td><td align="center" valign="top">g<sub>7</sub></td><td align="center" valign="top">g<sub>6</sub></td><td align="center" valign="top">g<sub>5</sub></td><td align="center" valign="top">g<sub>4</sub></td><td align="center" valign="top">g<sub>3</sub></td><td align="center" valign="top">g<sub>2</sub></td><td align="center" valign="top">g<sub>1</sub></td><td align="center" valign="top">g<sub>0</sub></td><td align="center" valign="top"> </td><td align="center" valign="top">r<sub>7</sub></td><td align="center" valign="top">r<sub>6</sub></td><td align="center" valign="top">r<sub>5</sub></td><td align="center" valign="top">r<sub>4</sub></td><td align="center" valign="top">r<sub>3</sub></td><td align="center" valign="top">r<sub>2</sub></td><td align="center" valign="top">r<sub>1</sub></td><td align="center" valign="top">r<sub>0</sub></td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td></tr><tr><td align="left" valign="top"><a name="V4L2-PIX-FMT-RGB24"></a><code class="constant">V4L2_PIX_FMT_RGB24</code></td><td align="center" valign="top">'RGB3'</td><td align="center" valign="top"> </td><td align="center" valign="top">r<sub>7</sub></td><td align="center" valign="top">r<sub>6</sub></td><td align="center" valign="top">r<sub>5</sub></td><td align="center" valign="top">r<sub>4</sub></td><td align="center" valign="top">r<sub>3</sub></td><td align="center" valign="top">r<sub>2</sub></td><td align="center" valign="top">r<sub>1</sub></td><td align="center" valign="top">r<sub>0</sub></td><td align="center" valign="top"> </td><td align="center" valign="top">g<sub>7</sub></td><td align="center" valign="top">g<sub>6</sub></td><td align="center" valign="top">g<sub>5</sub></td><td align="center" valign="top">g<sub>4</sub></td><td align="center" valign="top">g<sub>3</sub></td><td align="center" valign="top">g<sub>2</sub></td><td align="center" valign="top">g<sub>1</sub></td><td align="center" valign="top">g<sub>0</sub></td><td align="center" valign="top"> </td><td align="center" valign="top">b<sub>7</sub></td><td align="center" valign="top">b<sub>6</sub></td><td align="center" valign="top">b<sub>5</sub></td><td align="center" valign="top">b<sub>4</sub></td><td align="center" valign="top">b<sub>3</sub></td><td align="center" valign="top">b<sub>2</sub></td><td align="center" valign="top">b<sub>1</sub></td><td align="center" valign="top">b<sub>0</sub></td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td></tr><tr><td align="left" valign="top"><a name="V4L2-PIX-FMT-BGR666"></a><code class="constant">V4L2_PIX_FMT_BGR666</code></td><td align="center" valign="top">'BGRH'</td><td align="center" valign="top"> </td><td align="center" valign="top">b<sub>5</sub></td><td align="center" valign="top">b<sub>4</sub></td><td align="center" valign="top">b<sub>3</sub></td><td align="center" valign="top">b<sub>2</sub></td><td align="center" valign="top">b<sub>1</sub></td><td align="center" valign="top">b<sub>0</sub></td><td align="center" valign="top">g<sub>5</sub></td><td align="center" valign="top">g<sub>4</sub></td><td align="center" valign="top"> </td><td align="center" valign="top">g<sub>3</sub></td><td align="center" valign="top">g<sub>2</sub></td><td align="center" valign="top">g<sub>1</sub></td><td align="center" valign="top">g<sub>0</sub></td><td align="center" valign="top">r<sub>5</sub></td><td align="center" valign="top">r<sub>4</sub></td><td align="center" valign="top">r<sub>3</sub></td><td align="center" valign="top">r<sub>2</sub></td><td align="center" valign="top"> </td><td align="center" valign="top">r<sub>1</sub></td><td align="center" valign="top">r<sub>0</sub></td><td align="center" valign="top">-</td><td align="center" valign="top">-</td><td align="center" valign="top">-</td><td align="center" valign="top">-</td><td align="center" valign="top">-</td><td align="center" valign="top">-</td><td align="center" valign="top"> </td><td align="center" valign="top">-</td><td align="center" valign="top">-</td><td align="center" valign="top">-</td><td align="center" valign="top">-</td><td align="center" valign="top">-</td><td align="center" valign="top">-</td><td align="center" valign="top">-</td><td align="center" valign="top">-</td></tr><tr><td align="left" valign="top"><a name="V4L2-PIX-FMT-ABGR32"></a><code class="constant">V4L2_PIX_FMT_ABGR32</code></td><td align="center" valign="top">'AR24'</td><td align="center" valign="top"> </td><td align="center" valign="top">b<sub>7</sub></td><td align="center" valign="top">b<sub>6</sub></td><td align="center" valign="top">b<sub>5</sub></td><td align="center" valign="top">b<sub>4</sub></td><td align="center" valign="top">b<sub>3</sub></td><td align="center" valign="top">b<sub>2</sub></td><td align="center" valign="top">b<sub>1</sub></td><td align="center" valign="top">b<sub>0</sub></td><td align="center" valign="top"> </td><td align="center" valign="top">g<sub>7</sub></td><td align="center" valign="top">g<sub>6</sub></td><td align="center" valign="top">g<sub>5</sub></td><td align="center" valign="top">g<sub>4</sub></td><td align="center" valign="top">g<sub>3</sub></td><td align="center" valign="top">g<sub>2</sub></td><td align="center" valign="top">g<sub>1</sub></td><td align="center" valign="top">g<sub>0</sub></td><td align="center" valign="top"> </td><td align="center" valign="top">r<sub>7</sub></td><td align="center" valign="top">r<sub>6</sub></td><td align="center" valign="top">r<sub>5</sub></td><td align="center" valign="top">r<sub>4</sub></td><td align="center" valign="top">r<sub>3</sub></td><td align="center" valign="top">r<sub>2</sub></td><td align="center" valign="top">r<sub>1</sub></td><td align="center" valign="top">r<sub>0</sub></td><td align="center" valign="top"> </td><td align="center" valign="top">a<sub>7</sub></td><td align="center" valign="top">a<sub>6</sub></td><td align="center" valign="top">a<sub>5</sub></td><td align="center" valign="top">a<sub>4</sub></td><td align="center" valign="top">a<sub>3</sub></td><td align="center" valign="top">a<sub>2</sub></td><td align="center" valign="top">a<sub>1</sub></td><td align="center" valign="top">a<sub>0</sub></td></tr><tr><td align="left" valign="top"><a name="V4L2-PIX-FMT-XBGR32"></a><code class="constant">V4L2_PIX_FMT_XBGR32</code></td><td align="center" valign="top">'XR24'</td><td align="center" valign="top"> </td><td align="center" valign="top">b<sub>7</sub></td><td align="center" valign="top">b<sub>6</sub></td><td align="center" valign="top">b<sub>5</sub></td><td align="center" valign="top">b<sub>4</sub></td><td align="center" valign="top">b<sub>3</sub></td><td align="center" valign="top">b<sub>2</sub></td><td align="center" valign="top">b<sub>1</sub></td><td align="center" valign="top">b<sub>0</sub></td><td align="center" valign="top"> </td><td align="center" valign="top">g<sub>7</sub></td><td align="center" valign="top">g<sub>6</sub></td><td align="center" valign="top">g<sub>5</sub></td><td align="center" valign="top">g<sub>4</sub></td><td align="center" valign="top">g<sub>3</sub></td><td align="center" valign="top">g<sub>2</sub></td><td align="center" valign="top">g<sub>1</sub></td><td align="center" valign="top">g<sub>0</sub></td><td align="center" valign="top"> </td><td align="center" valign="top">r<sub>7</sub></td><td align="center" valign="top">r<sub>6</sub></td><td align="center" valign="top">r<sub>5</sub></td><td align="center" valign="top">r<sub>4</sub></td><td align="center" valign="top">r<sub>3</sub></td><td align="center" valign="top">r<sub>2</sub></td><td align="center" valign="top">r<sub>1</sub></td><td align="center" valign="top">r<sub>0</sub></td><td align="center" valign="top"> </td><td align="center" valign="top">-</td><td align="center" valign="top">-</td><td align="center" valign="top">-</td><td align="center" valign="top">-</td><td align="center" valign="top">-</td><td align="center" valign="top">-</td><td align="center" valign="top">-</td><td align="center" valign="top">-</td></tr><tr><td align="left" valign="top"><a name="V4L2-PIX-FMT-ARGB32"></a><code class="constant">V4L2_PIX_FMT_ARGB32</code></td><td align="center" valign="top">'BA24'</td><td align="center" valign="top"> </td><td align="center" valign="top">a<sub>7</sub></td><td align="center" valign="top">a<sub>6</sub></td><td align="center" valign="top">a<sub>5</sub></td><td align="center" valign="top">a<sub>4</sub></td><td align="center" valign="top">a<sub>3</sub></td><td align="center" valign="top">a<sub>2</sub></td><td align="center" valign="top">a<sub>1</sub></td><td align="center" valign="top">a<sub>0</sub></td><td align="center" valign="top"> </td><td align="center" valign="top">r<sub>7</sub></td><td align="center" valign="top">r<sub>6</sub></td><td align="center" valign="top">r<sub>5</sub></td><td align="center" valign="top">r<sub>4</sub></td><td align="center" valign="top">r<sub>3</sub></td><td align="center" valign="top">r<sub>2</sub></td><td align="center" valign="top">r<sub>1</sub></td><td align="center" valign="top">r<sub>0</sub></td><td align="center" valign="top"> </td><td align="center" valign="top">g<sub>7</sub></td><td align="center" valign="top">g<sub>6</sub></td><td align="center" valign="top">g<sub>5</sub></td><td align="center" valign="top">g<sub>4</sub></td><td align="center" valign="top">g<sub>3</sub></td><td align="center" valign="top">g<sub>2</sub></td><td align="center" valign="top">g<sub>1</sub></td><td align="center" valign="top">g<sub>0</sub></td><td align="center" valign="top"> </td><td align="center" valign="top">b<sub>7</sub></td><td align="center" valign="top">b<sub>6</sub></td><td align="center" valign="top">b<sub>5</sub></td><td align="center" valign="top">b<sub>4</sub></td><td align="center" valign="top">b<sub>3</sub></td><td align="center" valign="top">b<sub>2</sub></td><td align="center" valign="top">b<sub>1</sub></td><td align="center" valign="top">b<sub>0</sub></td></tr><tr><td align="left" valign="top"><a name="V4L2-PIX-FMT-XRGB32"></a><code class="constant">V4L2_PIX_FMT_XRGB32</code></td><td align="center" valign="top">'BX24'</td><td align="center" valign="top"> </td><td align="center" valign="top">-</td><td align="center" valign="top">-</td><td align="center" valign="top">-</td><td align="center" valign="top">-</td><td align="center" valign="top">-</td><td align="center" valign="top">-</td><td align="center" valign="top">-</td><td align="center" valign="top">-</td><td align="center" valign="top"> </td><td align="center" valign="top">r<sub>7</sub></td><td align="center" valign="top">r<sub>6</sub></td><td align="center" valign="top">r<sub>5</sub></td><td align="center" valign="top">r<sub>4</sub></td><td align="center" valign="top">r<sub>3</sub></td><td align="center" valign="top">r<sub>2</sub></td><td align="center" valign="top">r<sub>1</sub></td><td align="center" valign="top">r<sub>0</sub></td><td align="center" valign="top"> </td><td align="center" valign="top">g<sub>7</sub></td><td align="center" valign="top">g<sub>6</sub></td><td align="center" valign="top">g<sub>5</sub></td><td align="center" valign="top">g<sub>4</sub></td><td align="center" valign="top">g<sub>3</sub></td><td align="center" valign="top">g<sub>2</sub></td><td align="center" valign="top">g<sub>1</sub></td><td align="center" valign="top">g<sub>0</sub></td><td align="center" valign="top"> </td><td align="center" valign="top">b<sub>7</sub></td><td align="center" valign="top">b<sub>6</sub></td><td align="center" valign="top">b<sub>5</sub></td><td align="center" valign="top">b<sub>4</sub></td><td align="center" valign="top">b<sub>3</sub></td><td align="center" valign="top">b<sub>2</sub></td><td align="center" valign="top">b<sub>1</sub></td><td align="center" valign="top">b<sub>0</sub></td></tr></tbody></table></div></div><br class="table-break"><p>Bit 7 is the most significant bit.</p><p>The usage and value of the alpha bits (a) in the ARGB and ABGR formats 5 (collectively referred to as alpha formats) depend on the device type and 6 hardware operation. <a class="link" href="devices.html#capture" title="Video Capture Interface">Capture</a> devices 7 (including capture queues of mem-to-mem devices) fill the alpha component in 8 memory. When the device outputs an alpha channel the alpha component will 9 have a meaningful value. Otherwise, when the device doesn't output an alpha 10 channel but can set the alpha bit to a user-configurable value, the <a class="link" href="control.html#v4l2-alpha-component"><code class="constant">V4L2_CID_ALPHA_COMPONENT</code> 11 </a> control is used to specify that alpha value, and the alpha component 12 of all pixels will be set to the value specified by that control. Otherwise 13 a corresponding format without an alpha component (XRGB or XBGR) must be 14 used instead of an alpha format.</p><p><a class="link" href="output.html" title="Video Output Interface">Output</a> devices (including output queues 15 of mem-to-mem devices and <a class="link" href="osd.html" title="Video Output Overlay Interface">video output overlay</a> 16 devices) read the alpha component from memory. When the device processes the 17 alpha channel the alpha component must be filled with meaningful values by 18 applications. Otherwise a corresponding format without an alpha component 19 (XRGB or XBGR) must be used instead of an alpha format.</p><p>The XRGB and XBGR formats contain undefined bits (-). Applications, 20 devices and drivers must ignore those bits, for both <a class="link" href="devices.html#capture" title="Video Capture Interface">capture</a> and <a class="link" href="output.html" title="Video Output Interface">output</a> 21 devices.</p><div class="example"><a name="idp1100870828"></a><p class="title"><b>Example 2.1. <code class="constant">V4L2_PIX_FMT_BGR24</code> 4 × 4 pixel 22image</b></p><div class="example-contents"><p><b>Byte Order. </b>Each cell is one byte. 23 </p><div class="informaltable"><table border="0"><colgroup><col align="left"><col><col><col><col><col><col><col><col><col><col><col><col></colgroup><tbody valign="top"><tr><td align="left" valign="top">start + 0:</td><td align="center" valign="top">B<sub>00</sub></td><td align="center" valign="top">G<sub>00</sub></td><td align="center" valign="top">R<sub>00</sub></td><td align="center" valign="top">B<sub>01</sub></td><td align="center" valign="top">G<sub>01</sub></td><td align="center" valign="top">R<sub>01</sub></td><td align="center" valign="top">B<sub>02</sub></td><td align="center" valign="top">G<sub>02</sub></td><td align="center" valign="top">R<sub>02</sub></td><td align="center" valign="top">B<sub>03</sub></td><td align="center" valign="top">G<sub>03</sub></td><td align="center" valign="top">R<sub>03</sub></td></tr><tr><td align="left" valign="top">start + 12:</td><td align="center" valign="top">B<sub>10</sub></td><td align="center" valign="top">G<sub>10</sub></td><td align="center" valign="top">R<sub>10</sub></td><td align="center" valign="top">B<sub>11</sub></td><td align="center" valign="top">G<sub>11</sub></td><td align="center" valign="top">R<sub>11</sub></td><td align="center" valign="top">B<sub>12</sub></td><td align="center" valign="top">G<sub>12</sub></td><td align="center" valign="top">R<sub>12</sub></td><td align="center" valign="top">B<sub>13</sub></td><td align="center" valign="top">G<sub>13</sub></td><td align="center" valign="top">R<sub>13</sub></td></tr><tr><td align="left" valign="top">start + 24:</td><td align="center" valign="top">B<sub>20</sub></td><td align="center" valign="top">G<sub>20</sub></td><td align="center" valign="top">R<sub>20</sub></td><td align="center" valign="top">B<sub>21</sub></td><td align="center" valign="top">G<sub>21</sub></td><td align="center" valign="top">R<sub>21</sub></td><td align="center" valign="top">B<sub>22</sub></td><td align="center" valign="top">G<sub>22</sub></td><td align="center" valign="top">R<sub>22</sub></td><td align="center" valign="top">B<sub>23</sub></td><td align="center" valign="top">G<sub>23</sub></td><td align="center" valign="top">R<sub>23</sub></td></tr><tr><td align="left" valign="top">start + 36:</td><td align="center" valign="top">B<sub>30</sub></td><td align="center" valign="top">G<sub>30</sub></td><td align="center" valign="top">R<sub>30</sub></td><td align="center" valign="top">B<sub>31</sub></td><td align="center" valign="top">G<sub>31</sub></td><td align="center" valign="top">R<sub>31</sub></td><td align="center" valign="top">B<sub>32</sub></td><td align="center" valign="top">G<sub>32</sub></td><td align="center" valign="top">R<sub>32</sub></td><td align="center" valign="top">B<sub>33</sub></td><td align="center" valign="top">G<sub>33</sub></td><td align="center" valign="top">R<sub>33</sub></td></tr></tbody></table></div><p> 24 </p></div></div><br class="example-break"><p>Formats defined in <a class="xref" href="packed-rgb.html#rgb-formats-deprecated" title="Table 2.17. Deprecated Packed RGB Image Formats">Table 2.17, “Deprecated Packed RGB Image Formats”</a> are 25 deprecated and must not be used by new drivers. They are documented here for 26 reference. The meaning of their alpha bits (a) is ill-defined and 27 interpreted as in either the corresponding ARGB or XRGB format, depending on 28 the driver.</p><div class="table"><a name="rgb-formats-deprecated"></a><p class="title"><b>Table 2.17. Deprecated Packed RGB Image Formats</b></p><div class="table-contents"><table summary="Deprecated Packed RGB Image Formats" width="100%" border="0"><colgroup><col align="left" class="id"><col align="center" class="fourcc"><col align="center" class="bit"><col align="center" class="b07"><col align="center" class="b06"><col align="center" class="b05"><col align="center" class="b04"><col align="center" class="b03"><col align="center" class="b02"><col align="center" class="b01"><col align="center" class="b00"><col><col align="center" class="b17"><col align="center" class="b16"><col align="center" class="b15"><col align="center" class="b14"><col align="center" class="b13"><col align="center" class="b12"><col align="center" class="b11"><col align="center" class="b10"><col><col align="center" class="b27"><col align="center" class="b26"><col align="center" class="b25"><col align="center" class="b24"><col align="center" class="b23"><col align="center" class="b22"><col align="center" class="b21"><col align="center" class="b20"><col><col align="center" class="b37"><col align="center" class="b36"><col align="center" class="b35"><col align="center" class="b34"><col align="center" class="b33"><col align="center" class="b32"><col align="center" class="b31"></colgroup><thead><tr><th align="left">Identifier</th><th align="center">Code</th><th align="center"> </th><th colspan="8" align="center">Byte 0 in memory</th><td class="auto-generated"> </td><th colspan="8" align="center">Byte 1</th><td class="auto-generated"> </td><th colspan="8" align="center">Byte 2</th><td class="auto-generated"> </td><th colspan="8" align="center">Byte 3</th></tr><tr><th align="left"> </th><th align="center"> </th><th align="center">Bit</th><th align="center">7</th><th align="center">6</th><th align="center">5</th><th align="center">4</th><th align="center">3</th><th align="center">2</th><th align="center">1</th><th align="center">0</th><th align="center"> </th><th align="center">7</th><th align="center">6</th><th align="center">5</th><th align="center">4</th><th align="center">3</th><th align="center">2</th><th align="center">1</th><th align="center">0</th><th align="center"> </th><th align="center">7</th><th align="center">6</th><th align="center">5</th><th align="center">4</th><th align="center">3</th><th align="center">2</th><th align="center">1</th><th align="center">0</th><th align="center"> </th><th align="center">7</th><th align="center">6</th><th align="center">5</th><th align="center">4</th><th align="center">3</th><th align="center">2</th><th align="center">1</th><th align="center">0</th></tr></thead><tbody><tr><td align="left"><a name="V4L2-PIX-FMT-RGB444"></a><code class="constant">V4L2_PIX_FMT_RGB444</code></td><td align="center">'R444'</td><td align="center"> </td><td align="center">g<sub>3</sub></td><td align="center">g<sub>2</sub></td><td align="center">g<sub>1</sub></td><td align="center">g<sub>0</sub></td><td align="center">b<sub>3</sub></td><td align="center">b<sub>2</sub></td><td align="center">b<sub>1</sub></td><td align="center">b<sub>0</sub></td><td align="center"> </td><td align="center">a<sub>3</sub></td><td align="center">a<sub>2</sub></td><td align="center">a<sub>1</sub></td><td align="center">a<sub>0</sub></td><td align="center">r<sub>3</sub></td><td align="center">r<sub>2</sub></td><td align="center">r<sub>1</sub></td><td align="center">r<sub>0</sub></td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td></tr><tr><td align="left"><a name="V4L2-PIX-FMT-RGB555"></a><code class="constant">V4L2_PIX_FMT_RGB555</code></td><td align="center">'RGBO'</td><td align="center"> </td><td align="center">g<sub>2</sub></td><td align="center">g<sub>1</sub></td><td align="center">g<sub>0</sub></td><td align="center">b<sub>4</sub></td><td align="center">b<sub>3</sub></td><td align="center">b<sub>2</sub></td><td align="center">b<sub>1</sub></td><td align="center">b<sub>0</sub></td><td align="center"> </td><td align="center">a</td><td align="center">r<sub>4</sub></td><td align="center">r<sub>3</sub></td><td align="center">r<sub>2</sub></td><td align="center">r<sub>1</sub></td><td align="center">r<sub>0</sub></td><td align="center">g<sub>4</sub></td><td align="center">g<sub>3</sub></td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td></tr><tr><td align="left"><a name="V4L2-PIX-FMT-RGB555X"></a><code class="constant">V4L2_PIX_FMT_RGB555X</code></td><td align="center">'RGBQ'</td><td align="center"> </td><td align="center">a</td><td align="center">r<sub>4</sub></td><td align="center">r<sub>3</sub></td><td align="center">r<sub>2</sub></td><td align="center">r<sub>1</sub></td><td align="center">r<sub>0</sub></td><td align="center">g<sub>4</sub></td><td align="center">g<sub>3</sub></td><td align="center"> </td><td align="center">g<sub>2</sub></td><td align="center">g<sub>1</sub></td><td align="center">g<sub>0</sub></td><td align="center">b<sub>4</sub></td><td align="center">b<sub>3</sub></td><td align="center">b<sub>2</sub></td><td align="center">b<sub>1</sub></td><td align="center">b<sub>0</sub></td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td><td class="auto-generated"> </td></tr><tr><td align="left"><a name="V4L2-PIX-FMT-BGR32"></a><code class="constant">V4L2_PIX_FMT_BGR32</code></td><td align="center">'BGR4'</td><td align="center"> </td><td align="center">b<sub>7</sub></td><td align="center">b<sub>6</sub></td><td align="center">b<sub>5</sub></td><td align="center">b<sub>4</sub></td><td align="center">b<sub>3</sub></td><td align="center">b<sub>2</sub></td><td align="center">b<sub>1</sub></td><td align="center">b<sub>0</sub></td><td align="center"> </td><td align="center">g<sub>7</sub></td><td align="center">g<sub>6</sub></td><td align="center">g<sub>5</sub></td><td align="center">g<sub>4</sub></td><td align="center">g<sub>3</sub></td><td align="center">g<sub>2</sub></td><td align="center">g<sub>1</sub></td><td align="center">g<sub>0</sub></td><td align="center"> </td><td align="center">r<sub>7</sub></td><td align="center">r<sub>6</sub></td><td align="center">r<sub>5</sub></td><td align="center">r<sub>4</sub></td><td align="center">r<sub>3</sub></td><td align="center">r<sub>2</sub></td><td align="center">r<sub>1</sub></td><td align="center">r<sub>0</sub></td><td align="center"> </td><td align="center">a<sub>7</sub></td><td align="center">a<sub>6</sub></td><td align="center">a<sub>5</sub></td><td align="center">a<sub>4</sub></td><td align="center">a<sub>3</sub></td><td align="center">a<sub>2</sub></td><td align="center">a<sub>1</sub></td><td align="center">a<sub>0</sub></td></tr><tr><td align="left"><a name="V4L2-PIX-FMT-RGB32"></a><code class="constant">V4L2_PIX_FMT_RGB32</code></td><td align="center">'RGB4'</td><td align="center"> </td><td align="center">a<sub>7</sub></td><td align="center">a<sub>6</sub></td><td align="center">a<sub>5</sub></td><td align="center">a<sub>4</sub></td><td align="center">a<sub>3</sub></td><td align="center">a<sub>2</sub></td><td align="center">a<sub>1</sub></td><td align="center">a<sub>0</sub></td><td align="center"> </td><td align="center">r<sub>7</sub></td><td align="center">r<sub>6</sub></td><td align="center">r<sub>5</sub></td><td align="center">r<sub>4</sub></td><td align="center">r<sub>3</sub></td><td align="center">r<sub>2</sub></td><td align="center">r<sub>1</sub></td><td align="center">r<sub>0</sub></td><td align="center"> </td><td align="center">g<sub>7</sub></td><td align="center">g<sub>6</sub></td><td align="center">g<sub>5</sub></td><td align="center">g<sub>4</sub></td><td align="center">g<sub>3</sub></td><td align="center">g<sub>2</sub></td><td align="center">g<sub>1</sub></td><td align="center">g<sub>0</sub></td><td align="center"> </td><td align="center">b<sub>7</sub></td><td align="center">b<sub>6</sub></td><td align="center">b<sub>5</sub></td><td align="center">b<sub>4</sub></td><td align="center">b<sub>3</sub></td><td align="center">b<sub>2</sub></td><td align="center">b<sub>1</sub></td><td align="center">b<sub>0</sub></td></tr></tbody></table></div></div><br class="table-break"><p>A test utility to determine which RGB formats a driver 29actually supports is available from the LinuxTV v4l-dvb repository. 30See <a class="ulink" href="http://linuxtv.org/repo/" target="_top">http://linuxtv.org/repo/</a> for access instructions.</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="pixfmt-rgb.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="pixfmt-rgb.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="V4L2-PIX-FMT-SBGGR8.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">RGB Formats </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> V4L2_PIX_FMT_SBGGR8 ('BA81')</td></tr></table></div></body></html> 31