media: fe_property_parameters.rst: better define properties usage
Several frontend properties are specific to a subset of the delivery systems. Make it clearer when describing each property. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Mauro Carvalho Chehab
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@ -111,6 +111,8 @@ DTV_BANDWIDTH_HZ
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Bandwidth for the channel, in HZ.
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Should be set only for terrestrial delivery systems.
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Possible values: ``1712000``, ``5000000``, ``6000000``, ``7000000``,
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``8000000``, ``10000000``.
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@ -148,6 +150,7 @@ Specifies if the frontend should do spectral inversion or not.
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The acceptable values are defined by :c:type:`fe_spectral_inversion`.
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.. _DTV-DISEQC-MASTER:
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DTV_DISEQC_MASTER
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@ -161,8 +164,9 @@ Currently not implemented.
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DTV_SYMBOL_RATE
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===============
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Digital TV symbol rate, in bauds (symbols/second). Used on cable
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standards.
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Used on cable and satellite delivery systems.
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Digital TV symbol rate, in bauds (symbols/second).
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.. _DTV-INNER-FEC:
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@ -170,7 +174,7 @@ standards.
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DTV_INNER_FEC
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=============
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Used cable/satellite transmissions.
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Used on cable and satellite delivery systems.
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The acceptable values are defined by :c:type:`fe_code_rate`.
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@ -180,6 +184,8 @@ The acceptable values are defined by :c:type:`fe_code_rate`.
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DTV_VOLTAGE
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===========
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Used on satellite delivery systems.
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The voltage is usually used with non-DiSEqC capable LNBs to switch the
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polarzation (horizontal/vertical). When using DiSEqC epuipment this
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voltage has to be switched consistently to the DiSEqC commands as
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@ -201,6 +207,8 @@ Currently not used.
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DTV_PILOT
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=========
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Used on DVB-S2.
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Sets DVB-S2 pilot.
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The acceptable values are defined by :c:type:`fe_pilot`.
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@ -211,7 +219,9 @@ The acceptable values are defined by :c:type:`fe_pilot`.
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DTV_ROLLOFF
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===========
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Sets DVB-S2 rolloff
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Used on DVB-S2.
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Sets DVB-S2 rolloff.
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The acceptable values are defined by :c:type:`fe_rolloff`.
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@ -245,7 +255,7 @@ Currently not implemented.
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DTV_DELIVERY_SYSTEM
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===================
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Specifies the type of Delivery system.
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Specifies the type of the delivery system.
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The acceptable values are defined by :c:type:`fe_delivery_system`.
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@ -255,6 +265,8 @@ The acceptable values are defined by :c:type:`fe_delivery_system`.
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DTV_ISDBT_PARTIAL_RECEPTION
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===========================
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Used only on ISDB.
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If ``DTV_ISDBT_SOUND_BROADCASTING`` is '0' this bit-field represents
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whether the channel is in partial reception mode or not.
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@ -273,6 +285,8 @@ Possible values: 0, 1, -1 (AUTO)
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DTV_ISDBT_SOUND_BROADCASTING
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============================
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Used only on ISDB.
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This field represents whether the other DTV_ISDBT_*-parameters are
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referring to an ISDB-T and an ISDB-Tsb channel. (See also
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``DTV_ISDBT_PARTIAL_RECEPTION``).
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@ -285,6 +299,8 @@ Possible values: 0, 1, -1 (AUTO)
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DTV_ISDBT_SB_SUBCHANNEL_ID
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==========================
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Used only on ISDB.
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This field only applies if ``DTV_ISDBT_SOUND_BROADCASTING`` is '1'.
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(Note of the author: This might not be the correct description of the
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@ -320,6 +336,8 @@ Possible values: 0 .. 41, -1 (AUTO)
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DTV_ISDBT_SB_SEGMENT_IDX
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========================
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Used only on ISDB.
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This field only applies if ``DTV_ISDBT_SOUND_BROADCASTING`` is '1'.
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``DTV_ISDBT_SB_SEGMENT_IDX`` gives the index of the segment to be
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@ -336,6 +354,8 @@ Note: This value cannot be determined by an automatic channel search.
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DTV_ISDBT_SB_SEGMENT_COUNT
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==========================
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Used only on ISDB.
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This field only applies if ``DTV_ISDBT_SOUND_BROADCASTING`` is '1'.
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``DTV_ISDBT_SB_SEGMENT_COUNT`` gives the total count of connected
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@ -351,6 +371,8 @@ Note: This value cannot be determined by an automatic channel search.
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DTV-ISDBT-LAYER[A-C] parameters
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===============================
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Used only on ISDB.
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ISDB-T channels can be coded hierarchically. As opposed to DVB-T in
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ISDB-T hierarchical layers can be decoded simultaneously. For that
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reason a ISDB-T demodulator has 3 Viterbi and 3 Reed-Solomon decoders.
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@ -367,6 +389,8 @@ There are 3 parameter sets, for Layers A, B and C.
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DTV_ISDBT_LAYER_ENABLED
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-----------------------
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Used only on ISDB.
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Hierarchical reception in ISDB-T is achieved by enabling or disabling
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layers in the decoding process. Setting all bits of
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``DTV_ISDBT_LAYER_ENABLED`` to '1' forces all layers (if applicable) to
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@ -397,6 +421,8 @@ Only the values of the first 3 bits are used. Other bits will be silently ignore
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DTV_ISDBT_LAYER[A-C]_FEC
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------------------------
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Used only on ISDB.
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The Forward Error Correction mechanism used by a given ISDB Layer, as
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defined by :c:type:`fe_code_rate`.
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@ -410,6 +436,8 @@ Possible values are: ``FEC_AUTO``, ``FEC_1_2``, ``FEC_2_3``, ``FEC_3_4``,
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DTV_ISDBT_LAYER[A-C]_MODULATION
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-------------------------------
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Used only on ISDB.
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The modulation used by a given ISDB Layer, as defined by
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:c:type:`fe_modulation`.
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@ -428,6 +456,8 @@ Possible values are: ``QAM_AUTO``, ``QPSK``, ``QAM_16``, ``QAM_64``, ``DQPSK``
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DTV_ISDBT_LAYER[A-C]_SEGMENT_COUNT
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----------------------------------
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Used only on ISDB.
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Possible values: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, -1 (AUTO)
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Note: Truth table for ``DTV_ISDBT_SOUND_BROADCASTING`` and
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@ -517,6 +547,8 @@ Note: Truth table for ``DTV_ISDBT_SOUND_BROADCASTING`` and
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DTV_ISDBT_LAYER[A-C]_TIME_INTERLEAVING
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--------------------------------------
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Used only on ISDB.
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Valid values: 0, 1, 2, 4, -1 (AUTO)
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when DTV_ISDBT_SOUND_BROADCASTING is active, value 8 is also valid.
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@ -590,6 +622,8 @@ TMCC-structure, as shown in the table below.
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DTV_ATSCMH_FIC_VER
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------------------
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Used only on ATSC-MH.
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Version number of the FIC (Fast Information Channel) signaling data.
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FIC is used for relaying information to allow rapid service acquisition
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@ -603,6 +637,8 @@ Possible values: 0, 1, 2, 3, ..., 30, 31
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DTV_ATSCMH_PARADE_ID
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--------------------
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Used only on ATSC-MH.
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Parade identification number
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A parade is a collection of up to eight MH groups, conveying one or two
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@ -616,6 +652,8 @@ Possible values: 0, 1, 2, 3, ..., 126, 127
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DTV_ATSCMH_NOG
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--------------
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Used only on ATSC-MH.
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Number of MH groups per MH subframe for a designated parade.
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Possible values: 1, 2, 3, 4, 5, 6, 7, 8
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@ -626,6 +664,8 @@ Possible values: 1, 2, 3, 4, 5, 6, 7, 8
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DTV_ATSCMH_TNOG
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---------------
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Used only on ATSC-MH.
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Total number of MH groups including all MH groups belonging to all MH
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parades in one MH subframe.
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@ -637,6 +677,8 @@ Possible values: 0, 1, 2, 3, ..., 30, 31
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DTV_ATSCMH_SGN
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--------------
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Used only on ATSC-MH.
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Start group number.
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Possible values: 0, 1, 2, 3, ..., 14, 15
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@ -647,6 +689,8 @@ Possible values: 0, 1, 2, 3, ..., 14, 15
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DTV_ATSCMH_PRC
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--------------
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Used only on ATSC-MH.
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Parade repetition cycle.
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Possible values: 1, 2, 3, 4, 5, 6, 7, 8
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@ -657,6 +701,8 @@ Possible values: 1, 2, 3, 4, 5, 6, 7, 8
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DTV_ATSCMH_RS_FRAME_MODE
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------------------------
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Used only on ATSC-MH.
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Reed Solomon (RS) frame mode.
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The acceptable values are defined by :c:type:`atscmh_rs_frame_mode`.
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@ -667,6 +713,8 @@ The acceptable values are defined by :c:type:`atscmh_rs_frame_mode`.
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DTV_ATSCMH_RS_FRAME_ENSEMBLE
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----------------------------
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Used only on ATSC-MH.
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Reed Solomon(RS) frame ensemble.
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The acceptable values are defined by :c:type:`atscmh_rs_frame_ensemble`.
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@ -677,6 +725,8 @@ The acceptable values are defined by :c:type:`atscmh_rs_frame_ensemble`.
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DTV_ATSCMH_RS_CODE_MODE_PRI
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---------------------------
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Used only on ATSC-MH.
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Reed Solomon (RS) code mode (primary).
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The acceptable values are defined by :c:type:`atscmh_rs_code_mode`.
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@ -687,6 +737,8 @@ The acceptable values are defined by :c:type:`atscmh_rs_code_mode`.
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DTV_ATSCMH_RS_CODE_MODE_SEC
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---------------------------
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Used only on ATSC-MH.
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Reed Solomon (RS) code mode (secondary).
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The acceptable values are defined by :c:type:`atscmh_rs_code_mode`.
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@ -697,6 +749,8 @@ The acceptable values are defined by :c:type:`atscmh_rs_code_mode`.
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DTV_ATSCMH_SCCC_BLOCK_MODE
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--------------------------
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Used only on ATSC-MH.
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Series Concatenated Convolutional Code Block Mode.
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The acceptable values are defined by :c:type:`atscmh_sccc_block_mode`.
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@ -707,6 +761,8 @@ The acceptable values are defined by :c:type:`atscmh_sccc_block_mode`.
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DTV_ATSCMH_SCCC_CODE_MODE_A
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---------------------------
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Used only on ATSC-MH.
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Series Concatenated Convolutional Code Rate.
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The acceptable values are defined by :c:type:`atscmh_sccc_code_mode`.
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@ -716,6 +772,8 @@ The acceptable values are defined by :c:type:`atscmh_sccc_code_mode`.
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DTV_ATSCMH_SCCC_CODE_MODE_B
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---------------------------
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Used only on ATSC-MH.
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Series Concatenated Convolutional Code Rate.
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Possible values are the same as documented on enum
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@ -727,6 +785,8 @@ Possible values are the same as documented on enum
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DTV_ATSCMH_SCCC_CODE_MODE_C
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---------------------------
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Used only on ATSC-MH.
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Series Concatenated Convolutional Code Rate.
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Possible values are the same as documented on enum
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@ -738,6 +798,8 @@ Possible values are the same as documented on enum
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DTV_ATSCMH_SCCC_CODE_MODE_D
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---------------------------
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Used only on ATSC-MH.
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Series Concatenated Convolutional Code Rate.
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Possible values are the same as documented on enum
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@ -797,9 +859,11 @@ The acceptable values are defined by :c:type:`fe_guard_interval`.
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DTV_TRANSMISSION_MODE
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=====================
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Used only on OFTM-based standards, e. g. DVB-T/T2, ISDB-T, DTMB.
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Specifies the FFT size (with corresponds to the approximate number of
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carriers) used by the standard. This is used only on OFTM-based standards,
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e. g. DVB-T/T2, ISDB-T, DTMB.
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carriers) used by the standard.
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The acceptable values are defined by :c:type:`fe_transmit_mode`.
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@ -832,6 +896,8 @@ The acceptable values are defined by :c:type:`fe_transmit_mode`.
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DTV_HIERARCHY
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=============
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Used only on DVB-T and DVB-T2.
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Frontend hierarchy.
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The acceptable values are defined by :c:type:`fe_hierarchy`.
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@ -842,6 +908,8 @@ The acceptable values are defined by :c:type:`fe_hierarchy`.
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DTV_STREAM_ID
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=============
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Used on DVB-S2, DVB-T2 and ISDB-S.
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DVB-S2, DVB-T2 and ISDB-S support the transmission of several streams on
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a single transport stream. This property enables the DVB driver to
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handle substream filtering, when supported by the hardware. By default,
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