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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2010-12-23 11:14:50 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2011-03-22 04:53:38 -0300
commit39187e177dc6372a967aa17a49a79189dc4fa8de (patch)
treee2d44bc3d0e8883a2512016747b5a78ed65720e7 /Documentation/DocBook/v4l
parent7140c55738561907a1f66abf533d6358bf69ed9f (diff)
[media] v4l: Add 12 bits bayer pixel formats
Add FCCs for the following pixel formats: - V4L2_PIX_FMT_SBGGR12 - V4L2_PIX_FMT_SGBRG12 - V4L2_PIX_FMT_SGRBG12 - V4L2_PIX_FMT_SRGGB12 Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'Documentation/DocBook/v4l')
-rw-r--r--Documentation/DocBook/v4l/pixfmt-srggb12.xml90
1 files changed, 90 insertions, 0 deletions
diff --git a/Documentation/DocBook/v4l/pixfmt-srggb12.xml b/Documentation/DocBook/v4l/pixfmt-srggb12.xml
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+++ b/Documentation/DocBook/v4l/pixfmt-srggb12.xml
@@ -0,0 +1,90 @@
+ <refentry>
+ <refmeta>
+ <refentrytitle>V4L2_PIX_FMT_SRGGB12 ('RG12'),
+ V4L2_PIX_FMT_SGRBG12 ('BA12'),
+ V4L2_PIX_FMT_SGBRG12 ('GB12'),
+ V4L2_PIX_FMT_SBGGR12 ('BG12'),
+ </refentrytitle>
+ &manvol;
+ </refmeta>
+ <refnamediv>
+ <refname id="V4L2-PIX-FMT-SRGGB12"><constant>V4L2_PIX_FMT_SRGGB12</constant></refname>
+ <refname id="V4L2-PIX-FMT-SGRBG12"><constant>V4L2_PIX_FMT_SGRBG12</constant></refname>
+ <refname id="V4L2-PIX-FMT-SGBRG12"><constant>V4L2_PIX_FMT_SGBRG12</constant></refname>
+ <refname id="V4L2-PIX-FMT-SBGGR12"><constant>V4L2_PIX_FMT_SBGGR12</constant></refname>
+ <refpurpose>12-bit Bayer formats expanded to 16 bits</refpurpose>
+ </refnamediv>
+ <refsect1>
+ <title>Description</title>
+
+ <para>The following four pixel formats are raw sRGB / Bayer formats with
+12 bits per colour. Each colour component is stored in a 16-bit word, with 6
+unused high bits filled with zeros. Each n-pixel row contains n/2 green samples
+and n/2 blue or red samples, with alternating red and blue rows. Bytes are
+stored in memory in little endian order. They are conventionally described
+as GRGR... BGBG..., RGRG... GBGB..., etc. Below is an example of one of these
+formats</para>
+
+ <example>
+ <title><constant>V4L2_PIX_FMT_SBGGR12</constant> 4 &times; 4
+pixel image</title>
+
+ <formalpara>
+ <title>Byte Order.</title>
+ <para>Each cell is one byte, high 6 bits in high bytes are 0.
+ <informaltable frame="none">
+ <tgroup cols="5" align="center">
+ <colspec align="left" colwidth="2*" />
+ <tbody valign="top">
+ <row>
+ <entry>start&nbsp;+&nbsp;0:</entry>
+ <entry>B<subscript>00low</subscript></entry>
+ <entry>B<subscript>00high</subscript></entry>
+ <entry>G<subscript>01low</subscript></entry>
+ <entry>G<subscript>01high</subscript></entry>
+ <entry>B<subscript>02low</subscript></entry>
+ <entry>B<subscript>02high</subscript></entry>
+ <entry>G<subscript>03low</subscript></entry>
+ <entry>G<subscript>03high</subscript></entry>
+ </row>
+ <row>
+ <entry>start&nbsp;+&nbsp;8:</entry>
+ <entry>G<subscript>10low</subscript></entry>
+ <entry>G<subscript>10high</subscript></entry>
+ <entry>R<subscript>11low</subscript></entry>
+ <entry>R<subscript>11high</subscript></entry>
+ <entry>G<subscript>12low</subscript></entry>
+ <entry>G<subscript>12high</subscript></entry>
+ <entry>R<subscript>13low</subscript></entry>
+ <entry>R<subscript>13high</subscript></entry>
+ </row>
+ <row>
+ <entry>start&nbsp;+&nbsp;16:</entry>
+ <entry>B<subscript>20low</subscript></entry>
+ <entry>B<subscript>20high</subscript></entry>
+ <entry>G<subscript>21low</subscript></entry>
+ <entry>G<subscript>21high</subscript></entry>
+ <entry>B<subscript>22low</subscript></entry>
+ <entry>B<subscript>22high</subscript></entry>
+ <entry>G<subscript>23low</subscript></entry>
+ <entry>G<subscript>23high</subscript></entry>
+ </row>
+ <row>
+ <entry>start&nbsp;+&nbsp;24:</entry>
+ <entry>G<subscript>30low</subscript></entry>
+ <entry>G<subscript>30high</subscript></entry>
+ <entry>R<subscript>31low</subscript></entry>
+ <entry>R<subscript>31high</subscript></entry>
+ <entry>G<subscript>32low</subscript></entry>
+ <entry>G<subscript>32high</subscript></entry>
+ <entry>R<subscript>33low</subscript></entry>
+ <entry>R<subscript>33high</subscript></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </informaltable>
+ </para>
+ </formalpara>
+ </example>
+ </refsect1>
+</refentry>