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authorAntti Palosaari <crope@iki.fi>2014-01-31 00:29:46 -0300
committerMauro Carvalho Chehab <m.chehab@samsung.com>2014-03-13 10:26:46 -0300
commite6001abcc559738934015da56bbbf7615d076d8e (patch)
tree31142e865661edfe6f97ab509399d55b7d8916c7 /Documentation/DocBook
parent0a670c42f26de8e65f4e61130bfb84ae1488d8c9 (diff)
[media] DocBook: V4L: add V4L2_SDR_FMT_CU16LE - 'CU16'
Document V4L2_SDR_FMT_CU16LE format. It is complex unsigned 16-bit little endian IQ sample. Used by software defined radio devices. Cc: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Antti Palosaari <crope@iki.fi> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'Documentation/DocBook')
-rw-r--r--Documentation/DocBook/media/v4l/pixfmt-sdr-cu16le.xml46
-rw-r--r--Documentation/DocBook/media/v4l/pixfmt.xml1
2 files changed, 47 insertions, 0 deletions
diff --git a/Documentation/DocBook/media/v4l/pixfmt-sdr-cu16le.xml b/Documentation/DocBook/media/v4l/pixfmt-sdr-cu16le.xml
new file mode 100644
index 00000000000..26288ffa907
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/pixfmt-sdr-cu16le.xml
@@ -0,0 +1,46 @@
+<refentry id="V4L2-SDR-FMT-CU16LE">
+ <refmeta>
+ <refentrytitle>V4L2_SDR_FMT_CU16LE ('CU16')</refentrytitle>
+ &manvol;
+ </refmeta>
+ <refnamediv>
+ <refname>
+ <constant>V4L2_SDR_FMT_CU16LE</constant>
+ </refname>
+ <refpurpose>Complex unsigned 16-bit little endian IQ sample</refpurpose>
+ </refnamediv>
+ <refsect1>
+ <title>Description</title>
+ <para>
+This format contains sequence of complex number samples. Each complex number
+consist two parts, called In-phase and Quadrature (IQ). Both I and Q are
+represented as a 16 bit unsigned little endian number. I value comes first
+and Q value after that.
+ </para>
+ <example>
+ <title><constant>V4L2_SDR_FMT_CU16LE</constant> 1 sample</title>
+ <formalpara>
+ <title>Byte Order.</title>
+ <para>Each cell is one byte.
+ <informaltable frame="none">
+ <tgroup cols="3" align="center">
+ <colspec align="left" colwidth="2*" />
+ <tbody valign="top">
+ <row>
+ <entry>start&nbsp;+&nbsp;0:</entry>
+ <entry>I'<subscript>0[7:0]</subscript></entry>
+ <entry>I'<subscript>0[15:8]</subscript></entry>
+ </row>
+ <row>
+ <entry>start&nbsp;+&nbsp;2:</entry>
+ <entry>Q'<subscript>0[7:0]</subscript></entry>
+ <entry>Q'<subscript>0[15:8]</subscript></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </informaltable>
+ </para>
+ </formalpara>
+ </example>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/pixfmt.xml b/Documentation/DocBook/media/v4l/pixfmt.xml
index 40adcb87da6..f535d9ba511 100644
--- a/Documentation/DocBook/media/v4l/pixfmt.xml
+++ b/Documentation/DocBook/media/v4l/pixfmt.xml
@@ -818,6 +818,7 @@ extended control <constant>V4L2_CID_MPEG_STREAM_TYPE</constant>, see
interface only.</para>
&sub-sdr-cu08;
+ &sub-sdr-cu16le;
</section>