€•O.Œsphinx.addnodes”Œdocument”“”)”}”(Œ rawsource”Œ”Œchildren”]”(Œ translations”Œ LanguagesNode”“”)”}”(hhh]”(hŒ pending_xref”“”)”}”(hhh]”Œdocutils.nodes”ŒText”“”ŒChinese (Simplified)”…””}”Œparent”hsbaŒ attributes”}”(Œids”]”Œclasses”]”Œnames”]”Œdupnames”]”Œbackrefs”]”Œ refdomain”Œstd”Œreftype”Œdoc”Œ reftarget”Œ4/translations/zh_CN/userspace-api/media/dvb/frontend”Œmodname”NŒ classname”NŒ refexplicit”ˆuŒtagname”hhh ubh)”}”(hhh]”hŒChinese (Traditional)”…””}”hh2sbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ4/translations/zh_TW/userspace-api/media/dvb/frontend”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒItalian”…””}”hhFsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ4/translations/it_IT/userspace-api/media/dvb/frontend”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒJapanese”…””}”hhZsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ4/translations/ja_JP/userspace-api/media/dvb/frontend”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒKorean”…””}”hhnsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ4/translations/ko_KR/userspace-api/media/dvb/frontend”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒPortuguese (Brazilian)”…””}”hh‚sbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ4/translations/pt_BR/userspace-api/media/dvb/frontend”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒSpanish”…””}”hh–sbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ4/translations/sp_SP/userspace-api/media/dvb/frontend”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubeh}”(h]”h ]”h"]”h$]”h&]”Œcurrent_language”ŒEnglish”uh1h hhŒ _document”hŒsource”NŒline”NubhŒcomment”“”)”}”(hŒ8SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later”h]”hŒ8SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later”…””}”hh·sbah}”(h]”h ]”h"]”h$]”h&]”Œ xml:space”Œpreserve”uh1hµhhh²hh³ŒN/var/lib/git/docbuild/linux/Documentation/userspace-api/media/dvb/frontend.rst”h´KubhŒtarget”“”)”}”(hŒ.. _dvb_frontend:”h]”h}”(h]”h ]”h"]”h$]”h&]”Œrefid”Œ dvb-frontend”uh1hÈh´Khhh²hh³hÇubhŒsection”“”)”}”(hhh]”(hŒtitle”“”)”}”(hŒDigital TV Frontend API”h]”hŒDigital TV Frontend API”…””}”(hhÝh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÛhhØh²hh³hÇh´KubhŒ paragraph”“”)”}”(hŒ°The Digital TV frontend API was designed to support three groups of delivery systems: Terrestrial, cable and Satellite. Currently, the following delivery systems are supported:”h]”hŒ°The Digital TV frontend API was designed to support three groups of delivery systems: Terrestrial, cable and Satellite. Currently, the following delivery systems are supported:”…””}”(hhíh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÇh´K hhØh²hubhŒ bullet_list”“”)”}”(hhh]”(hŒ list_item”“”)”}”(hŒNTerrestrial systems: DVB-T, DVB-T2, ATSC, ATSC M/H, ISDB-T, DVB-H, DTMB, CMMB ”h]”hì)”}”(hŒMTerrestrial systems: DVB-T, DVB-T2, ATSC, ATSC M/H, ISDB-T, DVB-H, DTMB, CMMB”h]”hŒMTerrestrial systems: DVB-T, DVB-T2, ATSC, ATSC M/H, ISDB-T, DVB-H, DTMB, CMMB”…””}”(hjh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÇh´K hjubah}”(h]”h ]”h"]”h$]”h&]”uh1jhhýh²hh³hÇh´Nubj)”}”(hŒ9Cable systems: DVB-C Annex A/C, ClearQAM (DVB-C Annex B) ”h]”hì)”}”(hŒ8Cable systems: DVB-C Annex A/C, ClearQAM (DVB-C Annex B)”h]”hŒ8Cable systems: DVB-C Annex A/C, ClearQAM (DVB-C Annex B)”…””}”(hjh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÇh´Khjubah}”(h]”h ]”h"]”h$]”h&]”uh1jhhýh²hh³hÇh´Nubj)”}”(hŒ9Satellite systems: DVB-S, DVB-S2, DVB Turbo, ISDB-S, DSS ”h]”hì)”}”(hŒ8Satellite systems: DVB-S, DVB-S2, DVB Turbo, ISDB-S, DSS”h]”hŒ8Satellite systems: DVB-S, DVB-S2, DVB Turbo, ISDB-S, DSS”…””}”(hj6h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÇh´Khj2ubah}”(h]”h ]”h"]”h$]”h&]”uh1jhhýh²hh³hÇh´Nubeh}”(h]”h ]”h"]”h$]”h&]”Œbullet”Œ-”uh1hûh³hÇh´K hhØh²hubhì)”}”(hŒ?The Digital TV frontend controls several sub-devices including:”h]”hŒ?The Digital TV frontend controls several sub-devices including:”…””}”(hjRh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÇh´KhhØh²hubhü)”}”(hhh]”(j)”}”(hŒTuner ”h]”hì)”}”(hŒTuner”h]”hŒTuner”…””}”(hjgh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÇh´Khjcubah}”(h]”h ]”h"]”h$]”h&]”uh1jhj`h²hh³hÇh´Nubj)”}”(hŒDigital TV demodulator ”h]”hì)”}”(hŒDigital TV demodulator”h]”hŒDigital TV demodulator”…””}”(hjh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÇh´Khj{ubah}”(h]”h ]”h"]”h$]”h&]”uh1jhj`h²hh³hÇh´Nubj)”}”(hŒLow noise amplifier (LNA) ”h]”hì)”}”(hŒLow noise amplifier (LNA)”h]”hŒLow noise amplifier (LNA)”…””}”(hj—h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÇh´Khj“ubah}”(h]”h ]”h"]”h$]”h&]”uh1jhj`h²hh³hÇh´Nubj)”}”(hŒ*Satellite Equipment Control (SEC) [#f1]_. ”h]”hì)”}”(hŒ)Satellite Equipment Control (SEC) [#f1]_.”h]”(hŒ"Satellite Equipment Control (SEC) ”…””}”(hj¯h²hh³Nh´NubhŒfootnote_reference”“”)”}”(hŒ[#f1]_”h]”hŒ1”…””}”(hj¹h²hh³Nh´Nubah}”(h]”Œid1”ah ]”h"]”h$]”h&]”Œauto”KhÔŒf1”Œdocname”Œ userspace-api/media/dvb/frontend”uh1j·hj¯Œresolved”KubhŒ.”…””}”(hj¯h²hh³Nh´Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÇh´Khj«ubah}”(h]”h ]”h"]”h$]”h&]”uh1jhj`h²hh³hÇh´Nubeh}”(h]”h ]”h"]”h$]”h&]”jPjQuh1hûh³hÇh´KhhØh²hubhì)”}”(hŒ±The frontend can be accessed through ``/dev/dvb/adapter?/frontend?``. Data types and ioctl definitions can be accessed by including ``linux/dvb/frontend.h`` in your application.”h]”(hŒ%The frontend can be accessed through ”…””}”(hjãh²hh³Nh´NubhŒliteral”“”)”}”(hŒ``/dev/dvb/adapter?/frontend?``”h]”hŒ/dev/dvb/adapter?/frontend?”…””}”(hjíh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jëhjãubhŒ@. 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