Osphinx.addnodesdocument)}( rawsourcechildren]( translations LanguagesNode)}(hhh](h pending_xref)}(hhh]docutils.nodesTextChinese (Simplified)}parenthsba attributes}(ids]classes]names]dupnames]backrefs] refdomainstdreftypedoc reftarget;/translations/zh_CN/userspace-api/media/v4l/ext-ctrls-fm-rxmodnameN classnameN refexplicitutagnamehhh ubh)}(hhh]hChinese (Traditional)}hh2sbah}(h]h ]h"]h$]h&] refdomainh)reftypeh+ reftarget;/translations/zh_TW/userspace-api/media/v4l/ext-ctrls-fm-rxmodnameN classnameN refexplicituh1hhh ubh)}(hhh]hItalian}hhFsbah}(h]h ]h"]h$]h&] refdomainh)reftypeh+ reftarget;/translations/it_IT/userspace-api/media/v4l/ext-ctrls-fm-rxmodnameN classnameN refexplicituh1hhh ubh)}(hhh]hJapanese}hhZsbah}(h]h ]h"]h$]h&] refdomainh)reftypeh+ reftarget;/translations/ja_JP/userspace-api/media/v4l/ext-ctrls-fm-rxmodnameN classnameN refexplicituh1hhh ubh)}(hhh]hKorean}hhnsbah}(h]h ]h"]h$]h&] refdomainh)reftypeh+ reftarget;/translations/ko_KR/userspace-api/media/v4l/ext-ctrls-fm-rxmodnameN classnameN refexplicituh1hhh ubh)}(hhh]hSpanish}hhsbah}(h]h ]h"]h$]h&] refdomainh)reftypeh+ reftarget;/translations/sp_SP/userspace-api/media/v4l/ext-ctrls-fm-rxmodnameN classnameN refexplicituh1hhh ubeh}(h]h ]h"]h$]h&]current_languageEnglishuh1h hh _documenthsourceNlineNubhcomment)}(h8SPDX-License-Identifier: GFDL-1.1-no-invariants-or-laterh]h8SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later}hhsbah}(h]h ]h"]h$]h&] xml:spacepreserveuh1hhhhhhU/var/lib/git/docbuild/linux/Documentation/userspace-api/media/v4l/ext-ctrls-fm-rx.rsthKubhtarget)}(h.. _fm-rx-controls:h]h}(h]h ]h"]h$]h&]refidfm-rx-controlsuh1hhKhhhhhhubhsection)}(hhh](htitle)}(hFM Receiver Control Referenceh]hFM Receiver Control Reference}(hhhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhhhhhKubh paragraph)}(hdThe FM Receiver (FM_RX) class includes controls for common features of FM Reception capable devices.h]hdThe FM Receiver (FM_RX) class includes controls for common features of FM Reception capable devices.}(hhhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhK hhhhubh)}(h.. _fm-rx-control-id:h]h}(h]h ]h"]h$]h&]hfm-rx-control-iduh1hhKhhhhhhubh)}(hhh](h)}(hFM_RX Control IDsh]hFM_RX Control IDs}(hhhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhhhhhKubhdefinition_list)}(hhh](hdefinition_list_item)}(h``V4L2_CID_FM_RX_CLASS (class)`` The FM_RX class descriptor. Calling :ref:`VIDIOC_QUERYCTRL` for this control will return a description of this control class. h](hterm)}(h ``V4L2_CID_FM_RX_CLASS (class)``h]hliteral)}(hjh]hV4L2_CID_FM_RX_CLASS (class)}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1jhhhKhj ubh definition)}(hhh]h)}(h}The FM_RX class descriptor. Calling :ref:`VIDIOC_QUERYCTRL` for this control will return a description of this control class.h](h$The FM_RX class descriptor. Calling }(hj.hhhNhNubh)}(h:ref:`VIDIOC_QUERYCTRL`h]hinline)}(hj8h]hVIDIOC_QUERYCTRL}(hj<hhhNhNubah}(h]h ](xrefstdstd-refeh"]h$]h&]uh1j:hj6ubah}(h]h ]h"]h$]h&]refdoc'userspace-api/media/v4l/ext-ctrls-fm-rx refdomainjGreftyperef refexplicitrefwarn reftargetvidioc_queryctrluh1hhhhKhj.ubhB for this control will return a description of this control class.}(hj.hhhNhNubeh}(h]h ]h"]h$]h&]uh1hhhhKhj+ubah}(h]h ]h"]h$]h&]uh1j)hj ubeh}(h]h ]h"]h$]h&]uh1jhhhKhjubj )}(hW``V4L2_CID_RDS_RECEPTION (boolean)`` Enables/disables RDS reception by the radio tuner h](j)}(h$``V4L2_CID_RDS_RECEPTION (boolean)``h]j)}(hjwh]h V4L2_CID_RDS_RECEPTION (boolean)}(hjyhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjuubah}(h]h ]h"]h$]h&]uh1jhhhKhjqubj*)}(hhh]h)}(h1Enables/disables RDS reception by the radio tunerh]h1Enables/disables RDS reception by the radio tuner}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhjubah}(h]h ]h"]h$]h&]uh1j)hjqubeh}(h]h ]h"]h$]h&]uh1jhhhKhjhhubj )}(ht``V4L2_CID_RDS_RX_PTY (integer)`` Gets RDS Programme Type field. This encodes up to 31 pre-defined programme types. h](j)}(h!``V4L2_CID_RDS_RX_PTY (integer)``h]j)}(hjh]hV4L2_CID_RDS_RX_PTY (integer)}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1jhhhKhjubj*)}(hhh]h)}(hQGets RDS Programme Type field. This encodes up to 31 pre-defined programme types.h]hQGets RDS Programme Type field. This encodes up to 31 pre-defined programme types.}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhjubah}(h]h ]h"]h$]h&]uh1j)hjubeh}(h]h ]h"]h$]h&]uh1jhhhKhjhhubj )}(hX``V4L2_CID_RDS_RX_PS_NAME (string)`` Gets the Programme Service name (PS_NAME). It is intended for static display on a receiver. It is the primary aid to listeners in programme service identification and selection. In Annex E of :ref:`iec62106`, the RDS specification, there is a full description of the correct character encoding for Programme Service name strings. Also from RDS specification, PS is usually a single eight character text. However, it is also possible to find receivers which can scroll strings sized as 8 x N characters. So, this control must be configured with steps of 8 characters. The result is it must always contain a string with size multiple of 8. h](j)}(h$``V4L2_CID_RDS_RX_PS_NAME (string)``h]j)}(hjh]h V4L2_CID_RDS_RX_PS_NAME (string)}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1jhhhK)hjubj*)}(hhh]h)}(hX}Gets the Programme Service name (PS_NAME). It is intended for static display on a receiver. It is the primary aid to listeners in programme service identification and selection. In Annex E of :ref:`iec62106`, the RDS specification, there is a full description of the correct character encoding for Programme Service name strings. Also from RDS specification, PS is usually a single eight character text. However, it is also possible to find receivers which can scroll strings sized as 8 x N characters. So, this control must be configured with steps of 8 characters. The result is it must always contain a string with size multiple of 8.h](hGets the Programme Service name (PS_NAME). It is intended for static display on a receiver. It is the primary aid to listeners in programme service identification and selection. In Annex E of }(hjhhhNhNubh)}(h:ref:`iec62106`h]j;)}(hj h]hiec62106}(hj hhhNhNubah}(h]h ](jFstdstd-refeh"]h$]h&]uh1j:hjubah}(h]h ]h"]h$]h&]refdocjS refdomainjreftyperef refexplicitrefwarnjYiec62106uh1hhhhK hjubhX, the RDS specification, there is a full description of the correct character encoding for Programme Service name strings. Also from RDS specification, PS is usually a single eight character text. However, it is also possible to find receivers which can scroll strings sized as 8 x N characters. So, this control must be configured with steps of 8 characters. The result is it must always contain a string with size multiple of 8.}(hjhhhNhNubeh}(h]h ]h"]h$]h&]uh1hhhhK hjubah}(h]h ]h"]h$]h&]uh1j)hjubeh}(h]h ]h"]h$]h&]uh1jhhhK)hjhhubj )}(hX1``V4L2_CID_RDS_RX_RADIO_TEXT (string)`` Gets the Radio Text info. It is a textual description of what is being broadcasted. RDS Radio Text can be applied when broadcaster wishes to transmit longer PS names, programme-related information or any other text. In these cases, RadioText can be used in addition to ``V4L2_CID_RDS_RX_PS_NAME``. The encoding for Radio Text strings is also fully described in Annex E of :ref:`iec62106`. The length of Radio Text strings depends on which RDS Block is being used to transmit it, either 32 (2A block) or 64 (2B block). However, it is also possible to find receivers which can scroll strings sized as 32 x N or 64 x N characters. So, this control must be configured with steps of 32 or 64 characters. The result is it must always contain a string with size multiple of 32 or 64. h](j)}(h'``V4L2_CID_RDS_RX_RADIO_TEXT (string)``h]j)}(hjCh]h#V4L2_CID_RDS_RX_RADIO_TEXT (string)}(hjEhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjAubah}(h]h ]h"]h$]h&]uh1jhhhK7hj=ubj*)}(hhh]h)}(hXGets the Radio Text info. It is a textual description of what is being broadcasted. RDS Radio Text can be applied when broadcaster wishes to transmit longer PS names, programme-related information or any other text. In these cases, RadioText can be used in addition to ``V4L2_CID_RDS_RX_PS_NAME``. The encoding for Radio Text strings is also fully described in Annex E of :ref:`iec62106`. The length of Radio Text strings depends on which RDS Block is being used to transmit it, either 32 (2A block) or 64 (2B block). However, it is also possible to find receivers which can scroll strings sized as 32 x N or 64 x N characters. So, this control must be configured with steps of 32 or 64 characters. The result is it must always contain a string with size multiple of 32 or 64.h](hX Gets the Radio Text info. It is a textual description of what is being broadcasted. RDS Radio Text can be applied when broadcaster wishes to transmit longer PS names, programme-related information or any other text. In these cases, RadioText can be used in addition to }(hj[hhhNhNubj)}(h``V4L2_CID_RDS_RX_PS_NAME``h]hV4L2_CID_RDS_RX_PS_NAME}(hjchhhNhNubah}(h]h ]h"]h$]h&]uh1jhj[ubhL. The encoding for Radio Text strings is also fully described in Annex E of }(hj[hhhNhNubh)}(h:ref:`iec62106`h]j;)}(hjwh]hiec62106}(hjyhhhNhNubah}(h]h ](jFstdstd-refeh"]h$]h&]uh1j:hjuubah}(h]h ]h"]h$]h&]refdocjS refdomainjreftyperef refexplicitrefwarnjYiec62106uh1hhhhK,hj[ubhX. The length of Radio Text strings depends on which RDS Block is being used to transmit it, either 32 (2A block) or 64 (2B block). However, it is also possible to find receivers which can scroll strings sized as 32 x N or 64 x N characters. So, this control must be configured with steps of 32 or 64 characters. The result is it must always contain a string with size multiple of 32 or 64.}(hj[hhhNhNubeh}(h]h ]h"]h$]h&]uh1hhhhK,hjXubah}(h]h ]h"]h$]h&]uh1j)hj=ubeh}(h]h ]h"]h$]h&]uh1jhhhK7hjhhubj )}(hg``V4L2_CID_RDS_RX_TRAFFIC_ANNOUNCEMENT (boolean)`` If set, then a traffic announcement is in progress. h](j)}(h2``V4L2_CID_RDS_RX_TRAFFIC_ANNOUNCEMENT (boolean)``h]j)}(hjh]h.V4L2_CID_RDS_RX_TRAFFIC_ANNOUNCEMENT (boolean)}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1jhhhK:hjubj*)}(hhh]h)}(h3If set, then a traffic announcement is in progress.h]h3If set, then a traffic announcement is in progress.}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhK:hjubah}(h]h ]h"]h$]h&]uh1j)hjubeh}(h]h ]h"]h$]h&]uh1jhhhK:hjhhubj )}(hn``V4L2_CID_RDS_RX_TRAFFIC_PROGRAM (boolean)`` If set, then the tuned programme carries traffic announcements. h](j)}(h-``V4L2_CID_RDS_RX_TRAFFIC_PROGRAM (boolean)``h]j)}(hjh]h)V4L2_CID_RDS_RX_TRAFFIC_PROGRAM (boolean)}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1jhhhK=hjubj*)}(hhh]h)}(h?If set, then the tuned programme carries traffic announcements.h]h?If set, then the tuned programme carries traffic announcements.}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhK=hjubah}(h]h ]h"]h$]h&]uh1j)hjubeh}(h]h ]h"]h$]h&]uh1jhhhK=hjhhubj )}(h``V4L2_CID_RDS_RX_MUSIC_SPEECH (boolean)`` If set, then this channel broadcasts music. If cleared, then it broadcasts speech. If the transmitter doesn't make this distinction, then it will be set. h](j)}(h*``V4L2_CID_RDS_RX_MUSIC_SPEECH (boolean)``h]j)}(hj!h]h&V4L2_CID_RDS_RX_MUSIC_SPEECH (boolean)}(hj#hhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1jhhhKBhjubj*)}(hhh]h)}(hIf set, then this channel broadcasts music. If cleared, then it broadcasts speech. If the transmitter doesn't make this distinction, then it will be set.h]hIf set, then this channel broadcasts music. If cleared, then it broadcasts speech. If the transmitter doesn’t make this distinction, then it will be set.}(hj9hhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhK@hj6ubah}(h]h ]h"]h$]h&]uh1j)hjubeh}(h]h ]h"]h$]h&]uh1jhhhKBhjhhubj )}(hXM``V4L2_CID_TUNE_DEEMPHASIS (enum)`` Configures the de-emphasis value for reception. A de-emphasis filter is applied to the broadcast to accentuate the high audio frequencies. Depending on the region, a time constant of either 50 or 75 microseconds is used. The enum v4l2_deemphasis defines possible values for de-emphasis. They are: h](j)}(h#``V4L2_CID_TUNE_DEEMPHASIS (enum)``h]j)}(hjYh]hV4L2_CID_TUNE_DEEMPHASIS (enum)}(hj[hhhNhNubah}(h]h ]h"]h$]h&]uh1jhjWubah}(h]h ]h"]h$]h&]uh1jhhhKIhjSubj*)}(hhh]h)}(hX(Configures the de-emphasis value for reception. A de-emphasis filter is applied to the broadcast to accentuate the high audio frequencies. Depending on the region, a time constant of either 50 or 75 microseconds is used. The enum v4l2_deemphasis defines possible values for de-emphasis. They are:h]hX(Configures the de-emphasis value for reception. A de-emphasis filter is applied to the broadcast to accentuate the high audio frequencies. Depending on the region, a time constant of either 50 or 75 microseconds is used. The enum v4l2_deemphasis defines possible values for de-emphasis. They are:}(hjqhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKEhjnubah}(h]h ]h"]h$]h&]uh1j)hjSubeh}(h]h ]h"]h$]h&]uh1jhhhKIhjhhubeh}(h]h ]h"]h$]h&]uh1jhhhhhhhNubhtable)}(hhh]htgroup)}(hhh](hcolspec)}(hhh]h}(h]h ]h"]h$]h&]colwidthK2uh1jhjubj)}(hhh]h}(h]h ]h"]h$]h&]colwidthK2uh1jhjubhtbody)}(hhh](hrow)}(hhh](hentry)}(hhh]h)}(h``V4L2_DEEMPHASIS_DISABLED``h]j)}(hjh]hV4L2_DEEMPHASIS_DISABLED}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1hhhhKOhjubah}(h]h ]h"]h$]h&]uh1jhjubj)}(hhh]h)}(hNo de-emphasis is applied.h]hNo de-emphasis is applied.}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKPhjubah}(h]h ]h"]h$]h&]uh1jhjubeh}(h]h ]h"]h$]h&]uh1jhjubj)}(hhh](j)}(hhh]h)}(h``V4L2_DEEMPHASIS_50_uS``h]j)}(hjh]hV4L2_DEEMPHASIS_50_uS}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1hhhhKQhjubah}(h]h ]h"]h$]h&]uh1jhjubj)}(hhh]h)}(hA de-emphasis of 50 uS is used.h]hA de-emphasis of 50 uS is used.}(hj hhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKRhjubah}(h]h ]h"]h$]h&]uh1jhjubeh}(h]h ]h"]h$]h&]uh1jhjubj)}(hhh](j)}(hhh]h)}(h``V4L2_DEEMPHASIS_75_uS``h]j)}(hjBh]hV4L2_DEEMPHASIS_75_uS}(hjDhhhNhNubah}(h]h ]h"]h$]h&]uh1jhj@ubah}(h]h ]h"]h$]h&]uh1hhhhKShj=ubah}(h]h ]h"]h$]h&]uh1jhj:ubj)}(hhh]h)}(hA de-emphasis of 75 uS is used.h]hA de-emphasis of 75 uS is used.}(hj`hhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKThj]ubah}(h]h ]h"]h$]h&]uh1jhj:ubeh}(h]h ]h"]h$]h&]uh1jhjubeh}(h]h ]h"]h$]h&]uh1jhjubeh}(h]h ]h"]h$]h&]colsKuh1jhjubah}(h]h ]h"]h$]h&]uh1jhhhhhNhNubeh}(h](fm-rx-control-idsheh ]h"](fm_rx control idsfm-rx-control-ideh$]h&]uh1hhhhhhhhKexpect_referenced_by_name}jhsexpect_referenced_by_id}hhsubeh}(h](fm-receiver-control-referenceheh ]h"](fm receiver control referencefm-rx-controlseh$]h&]uh1hhhhhhhhKj}jhsj}hhsubeh}(h]h ]h"]h$]h&]sourcehuh1hcurrent_sourceN current_lineNsettingsdocutils.frontendValues)}(hN generatorN datestampN source_linkN source_urlN toc_backlinksjfootnote_backlinksK sectnum_xformKstrip_commentsNstrip_elements_with_classesN strip_classesN report_levelK halt_levelKexit_status_levelKdebugNwarning_streamN tracebackinput_encoding utf-8-siginput_encoding_error_handlerstrictoutput_encodingutf-8output_encoding_error_handlerjerror_encodingutf-8error_encoding_error_handlerbackslashreplace language_codeenrecord_dependenciesNconfigN id_prefixhauto_id_prefixid dump_settingsNdump_internalsNdump_transformsNdump_pseudo_xmlNexpose_internalsNstrict_visitorN_disable_configN_sourceh _destinationN _config_files]7/var/lib/git/docbuild/linux/Documentation/docutils.confafile_insertion_enabled raw_enabledKline_length_limitM'pep_referencesN pep_base_urlhttps://peps.python.org/pep_file_url_templatepep-%04drfc_referencesN rfc_base_url&https://datatracker.ietf.org/doc/html/ tab_widthKtrim_footnote_reference_spacesyntax_highlightlong smart_quotessmartquotes_locales]character_level_inline_markupdoctitle_xform docinfo_xformKsectsubtitle_xform image_loadinglinkembed_stylesheetcloak_email_addressessection_self_linkenvNubreporterNindirect_targets]substitution_defs}substitution_names}refnames}refids}(h]hah]haunameids}(jhjjjhjju nametypes}(jjjjuh}(hhjhhhjhu footnote_refs} citation_refs} autofootnotes]autofootnote_refs]symbol_footnotes]symbol_footnote_refs] footnotes] citations]autofootnote_startKsymbol_footnote_startK id_counter collectionsCounter}Rparse_messages]transform_messages](hsystem_message)}(hhh]h)}(hhh]h4Hyperlink target "fm-rx-controls" is not referenced.}hj2sbah}(h]h ]h"]h$]h&]uh1hhj/ubah}(h]h ]h"]h$]h&]levelKtypeINFOsourcehlineKuh1j-ubj.)}(hhh]h)}(hhh]h6Hyperlink target "fm-rx-control-id" is not referenced.}hjMsbah}(h]h ]h"]h$]h&]uh1hhjJubah}(h]h ]h"]h$]h&]levelKtypejGsourcehlineKuh1j-ube transformerN include_log] decorationNhhub.