media/dvb/dvbproperty.rst

1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _frontend-properties:
11 the demodulator, the Linear Low-noise Amplifier (LNA) and to set the
12 antenna subsystem via Satellite Equipment Control - SEC (on satellite
16 In the past (up to DVB API version 3 - DVBv3), the strategy used was to have a
17 union with the parameters needed to tune for DVB-S, DVB-C, DVB-T and
39    2. Don't use DVB API version 3 calls on hardware with supports
41       support to new standards and/or new hardware.
48       new standard added to it was DVB-S2.
50 **Example**: in order to set the hardware to tune into a DVB-C channel
51 at 651 kHz, modulated with 256-QAM, FEC 3/4 and symbol rate of 5.217
55   :ref:`DTV_DELIVERY_SYSTEM <DTV-DELIVERY-SYSTEM>` = SYS_DVBC_ANNEX_A
57   :ref:`DTV_FREQUENCY <DTV-FREQUENCY>` = 651000000
59   :ref:`DTV_MODULATION <DTV-MODULATION>` = QAM_256
61   :ref:`DTV_INVERSION <DTV-INVERSION>` = INVERSION_AUTO
63   :ref:`DTV_SYMBOL_RATE <DTV-SYMBOL-RATE>` = 5217000
65   :ref:`DTV_INNER_FEC <DTV-INNER-FEC>` = FEC_3_4
67   :ref:`DTV_TUNE <DTV-TUNE>`
70 :ref:`dtv-prop-example`.
72 .. code-block:: c
74     :name: dtv-prop-example
101 	    return -1;
103 	if (ioctl(fd, FE_SET_PROPERTY, &dtv_prop) == -1) {
105 	    return -1;
113    `libdvbv5 <https://linuxtv.org/docs/libdvbv5/index.html>`__, as it
122     frontend-stat-properties
123     frontend-property-terrestrial-systems
124     frontend-property-cable-systems
125     frontend-property-satellite-systems
126     frontend-header