Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 0969ec18 authored by Mauro Carvalho Chehab's avatar Mauro Carvalho Chehab
Browse files

[media] DocBook/frontend.xml: Correlate dvb delivery systems 



As the DVB API provides two ways to specify the delivery
systems, correlate both ways into a table.

Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 95e61e01

Documentation/DocBook/media/dvb/frontend.xml

+11 −6
Original line number Diff line number Diff line
@@ -23,40 +23,45 @@ cards, in which case there exists no frontend device.</para> 
<section id="fe-type-t">

<title>Frontend type</title>



<para>For historical reasons frontend types are named after the type of modulation used in

<para>For historical reasons, frontend types are named by the type of modulation used in

transmission. The fontend types are given by fe_type_t type, defined as:</para>



<table pgwide="1" frame="none" id="fe-type">

<title>Frontend types</title>

<tgroup cols="2">

<tgroup cols="3">

   &cs-def;

   <thead>

     <row>

       <entry>fe_type</entry>

       <entry>Description</entry>

       <entry><link linkend="DTV-DELIVERY-SYSTEM">DTV_DELIVERY_SYSTEM</link> equivalent type</entry>

     </row>

  </thead>

  <tbody valign="top">

  <row>

     <entry id="FE_QPSK"><constant>FE_QPSK</constant></entry>

     <entry>For DVB-S standard</entry>

     <entry><constant>SYS_DVBS</constant></entry>

  </row>

  <row>

     <entry id="FE_QAM"><constant>FE_QAM</constant></entry>

     <entry>For DVB-C standard</entry>

     <entry>For DVB-C annex A/C standard</entry>

     <entry><constant>SYS_DVBC_ANNEX_AC</constant></entry>

  </row>

  <row>

     <entry id="FE_OFDM"><constant>FE_OFDM</constant></entry>

     <entry>For DVB-T standard. Also used for ISDB-T on compatibility mode</entry>

     <entry>For DVB-T standard</entry>

     <entry><constant>SYS_DVBT</constant></entry>

  </row>

  <row>

     <entry id="FE_ATSC"><constant>FE_ATSC</constant></entry>

     <entry>For ATSC standard (terrestrial or cable)</entry>

     <entry>For ATSC standard (terrestrial) or for DVB-C Annex B (cable) used in US.</entry>

     <entry><constant>SYS_ATSC</constant> (terrestrial) or <constant>SYS_DVBC_ANNEX_B</constant> (cable)</entry>

  </row>

</tbody></tgroup></table>



<para>Newer formats like DVB-S2, ISDB-T, ISDB-S and DVB-T2 are not described at the above, as they're

supported via the new <link linkend="FE_GET_SET_PROPERTY">FE_GET_PROPERTY/FE_GET_SET_PROPERTY</link> method.

supported via the new <link linkend="FE_GET_SET_PROPERTY">FE_GET_PROPERTY/FE_GET_SET_PROPERTY</link> ioctl's, using the <link linkend="DTV-DELIVERY-SYSTEM">DTV_DELIVERY_SYSTEM</link> parameter.

</para>

</section>