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kernel/linux-rt-4.4.41/Documentation/DocBook/media/v4l/pixfmt-sdr-cs14le.xml 1.65 KB
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  <refentry id="V4L2-SDR-FMT-CS14LE">
    <refmeta>
      <refentrytitle>V4L2_SDR_FMT_CS14LE ('CS14')</refentrytitle>
      &manvol;
    </refmeta>
      <refnamediv>
        <refname>
          <constant>V4L2_SDR_FMT_CS14LE</constant>
        </refname>
        <refpurpose>Complex signed 14-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 14 bit signed little endian number. I value comes first
  and Q value after that. 14 bit value is stored in 16 bit space with unused
  high bits padded with 0.
        </para>
      <example>
        <title><constant>V4L2_SDR_FMT_CS14LE</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[13:8]</subscript></entry>
                  </row>
                  <row>
                    <entry>start&nbsp;+&nbsp;2:</entry>
                    <entry>Q'<subscript>0[7:0]</subscript></entry>
                    <entry>Q'<subscript>0[13:8]</subscript></entry>
                  </row>
                </tbody>
              </tgroup>
            </informaltable>
          </para>
        </formalpara>
      </example>
    </refsect1>
  </refentry>