From 0577a2f6d84a08da96c908a885db16b4d3532dc4 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 28 May 2015 20:52:52 -0300 Subject: [media] DocBook: improve documentation for OFDM transmission mode Format it as a table and add more details, in special, for the DTMB modes. Signed-off-by: Mauro Carvalho Chehab --- Documentation/DocBook/media/dvb/dvbproperty.xml | 69 +++++++++++++++++++------ 1 file changed, 54 insertions(+), 15 deletions(-) (limited to 'Documentation/DocBook/media/dvb/dvbproperty.xml') diff --git a/Documentation/DocBook/media/dvb/dvbproperty.xml b/Documentation/DocBook/media/dvb/dvbproperty.xml index 41085537acfc..06a12f1c57c5 100644 --- a/Documentation/DocBook/media/dvb/dvbproperty.xml +++ b/Documentation/DocBook/media/dvb/dvbproperty.xml @@ -827,22 +827,61 @@ typedef enum fe_guard_interval {
<constant>DTV_TRANSMISSION_MODE</constant> - Specifies the number of carriers used by the standard + Specifies the number of carriers used by the standard. + This is used only on OFTM-based standards, e. g. + DVB-T/T2, ISDB-T, DTMB + +
+enum fe_transmit_mode: Number of carriers per channel + + + enum fe_transmit_mode + + &cs-def; + + + ID + Description + + + + + TRANSMISSION_MODE_AUTO + Autodetect transmission mode. The hardware will try to find + the correct FFT-size (if capable) to fill in the missing + parameters. + + TRANSMISSION_MODE_1K + Transmission mode 1K + + TRANSMISSION_MODE_2K + Transmission mode 2K + + TRANSMISSION_MODE_8K + Transmission mode 8K + + TRANSMISSION_MODE_4K + Transmission mode 4K + + TRANSMISSION_MODE_16K + Transmission mode 16K + + TRANSMISSION_MODE_32K + Transmission mode 32K + + TRANSMISSION_MODE_C1 + Single Carrier (C=1) transmission mode (DTMB) + + TRANSMISSION_MODE_C3780 + Multi Carrier (C=3780) transmission mode (DTMB) + + + + +
+
+ - Possible values are: - -typedef enum fe_transmit_mode { - TRANSMISSION_MODE_2K, - TRANSMISSION_MODE_8K, - TRANSMISSION_MODE_AUTO, - TRANSMISSION_MODE_4K, - TRANSMISSION_MODE_1K, - TRANSMISSION_MODE_16K, - TRANSMISSION_MODE_32K, - TRANSMISSION_MODE_C1, - TRANSMISSION_MODE_C3780, -} fe_transmit_mode_t; - Notes: 1) ISDB-T supports three carrier/symbol-size: 8K, 4K, 2K. It is called 'mode' in the standard: Mode 1 is 2K, mode 2 is 4K, mode 3 is 8K -- cgit v1.2.3-59-g8ed1b