aboutsummaryrefslogtreecommitdiffstats
path: root/Documentation/DocBook/media/dvb/dvbproperty.xml
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/DocBook/media/dvb/dvbproperty.xml')
-rw-r--r--Documentation/DocBook/media/dvb/dvbproperty.xml19
1 files changed, 17 insertions, 2 deletions
diff --git a/Documentation/DocBook/media/dvb/dvbproperty.xml b/Documentation/DocBook/media/dvb/dvbproperty.xml
index 3bc8a61efe30..ffee1fbbc001 100644
--- a/Documentation/DocBook/media/dvb/dvbproperty.xml
+++ b/Documentation/DocBook/media/dvb/dvbproperty.xml
@@ -334,9 +334,10 @@ typedef enum fe_rolloff {
334 <title>fe_delivery_system type</title> 334 <title>fe_delivery_system type</title>
335 <para>Possible values: </para> 335 <para>Possible values: </para>
336<programlisting> 336<programlisting>
337
337typedef enum fe_delivery_system { 338typedef enum fe_delivery_system {
338 SYS_UNDEFINED, 339 SYS_UNDEFINED,
339 SYS_DVBC_ANNEX_AC, 340 SYS_DVBC_ANNEX_A,
340 SYS_DVBC_ANNEX_B, 341 SYS_DVBC_ANNEX_B,
341 SYS_DVBT, 342 SYS_DVBT,
342 SYS_DSS, 343 SYS_DSS,
@@ -353,6 +354,7 @@ typedef enum fe_delivery_system {
353 SYS_DAB, 354 SYS_DAB,
354 SYS_DVBT2, 355 SYS_DVBT2,
355 SYS_TURBO, 356 SYS_TURBO,
357 SYS_DVBC_ANNEX_C,
356} fe_delivery_system_t; 358} fe_delivery_system_t;
357</programlisting> 359</programlisting>
358 </section> 360 </section>
@@ -647,6 +649,18 @@ typedef enum fe_hierarchy {
647 many data types via a single multiplex. The API will soon support this 649 many data types via a single multiplex. The API will soon support this
648 at which point this section will be expanded.</para> 650 at which point this section will be expanded.</para>
649 </section> 651 </section>
652 <section id="DTV_ENUM_DELSYS">
653 <title><constant>DTV_ENUM_DELSYS</constant></title>
654 <para>A Multi standard frontend needs to advertise the delivery systems provided.
655 Applications need to enumerate the provided delivery systems, before using
656 any other operation with the frontend. Prior to it's introduction,
657 FE_GET_INFO was used to determine a frontend type. A frontend which
658 provides more than a single delivery system, FE_GET_INFO doesn't help much.
659 Applications which intends to use a multistandard frontend must enumerate
660 the delivery systems associated with it, rather than trying to use
661 FE_GET_INFO. In the case of a legacy frontend, the result is just the same
662 as with FE_GET_INFO, but in a more structured format </para>
663 </section>
650</section> 664</section>
651 <section id="frontend-property-terrestrial-systems"> 665 <section id="frontend-property-terrestrial-systems">
652 <title>Properties used on terrestrial delivery systems</title> 666 <title>Properties used on terrestrial delivery systems</title>
@@ -767,7 +781,8 @@ typedef enum fe_hierarchy {
767 <title>Properties used on cable delivery systems</title> 781 <title>Properties used on cable delivery systems</title>
768 <section id="dvbc-params"> 782 <section id="dvbc-params">
769 <title>DVB-C delivery system</title> 783 <title>DVB-C delivery system</title>
770 <para>The DVB-C Annex-A/C is the widely used cable standard. Transmission uses QAM modulation.</para> 784 <para>The DVB-C Annex-A is the widely used cable standard. Transmission uses QAM modulation.</para>
785 <para>The DVB-C Annex-C is optimized for 6MHz, and is used in Japan. It supports a subset of the Annex A modulation types, and a roll-off of 0.13, instead of 0.15</para>
771 <para>The following parameters are valid for DVB-C Annex A/C:</para> 786 <para>The following parameters are valid for DVB-C Annex A/C:</para>
772 <itemizedlist mark='opencircle'> 787 <itemizedlist mark='opencircle'>
773 <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem> 788 <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>