€•ö3Œsphinx.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”Œ-/translations/zh_CN/userspace-api/media/intro”Œmodname”NŒ classname”NŒ refexplicit”ˆuŒtagname”hhh ubh)”}”(hhh]”hŒChinese (Traditional)”…””}”hh2sbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ-/translations/zh_TW/userspace-api/media/intro”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒItalian”…””}”hhFsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ-/translations/it_IT/userspace-api/media/intro”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒJapanese”…””}”hhZsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ-/translations/ja_JP/userspace-api/media/intro”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒKorean”…””}”hhnsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ-/translations/ko_KR/userspace-api/media/intro”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒSpanish”…””}”hh‚sbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ-/translations/sp_SP/userspace-api/media/intro”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubeh}”(h]”h ]”h"]”h$]”h&]”Œcurrent_language”ŒEnglish”uh1h hhŒ _document”hŒsource”NŒline”NubhŒcomment”“”)”}”(hŒ SPDX-License-Identifier: GPL-2.0”h]”hŒ SPDX-License-Identifier: GPL-2.0”…””}”hh£sbah}”(h]”h ]”h"]”h$]”h&]”Œ xml:space”Œpreserve”uh1h¡hhhžhhŸŒG/var/lib/git/docbuild/linux/Documentation/userspace-api/media/intro.rst”h KubhŒsection”“”)”}”(hhh]”(hŒtitle”“”)”}”(hŒ Introduction”h]”hŒ Introduction”…””}”(hh»hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¹hh¶hžhhŸh³h KubhŒ paragraph”“”)”}”(hX"This document covers the Linux Kernel to Userspace API's used by video and radio streaming devices, including video cameras, analog and digital TV receiver cards, AM/FM receiver cards, Software Defined Radio (SDR), streaming capture and output devices, codec devices and remote controllers.”h]”hX$This document covers the Linux Kernel to Userspace API’s used by video and radio streaming devices, including video cameras, analog and digital TV receiver cards, AM/FM receiver cards, Software Defined Radio (SDR), streaming capture and output devices, codec devices and remote controllers.”…””}”(hhËhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h Khh¶hžhubhÊ)”}”(hŒHA typical media device hardware is shown at :ref:`typical_media_device`.”h]”(hŒ,A typical media device hardware is shown at ”…””}”(hhÙhžhhŸNh Nubh)”}”(hŒ:ref:`typical_media_device`”h]”hŒinline”“”)”}”(hhãh]”hŒtypical_media_device”…””}”(hhçhžhhŸNh Nubah}”(h]”h ]”(Œxref”Œstd”Œstd-ref”eh"]”h$]”h&]”uh1håhháubah}”(h]”h ]”h"]”h$]”h&]”Œrefdoc”Œuserspace-api/media/intro”Œ refdomain”hòŒreftype”Œref”Œ refexplicit”‰Œrefwarn”ˆŒ reftarget”Œtypical_media_device”uh1hhŸh³h K hhÙubhŒ.”…””}”(hhÙhžhhŸNh Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h K hh¶hžhubhŒtarget”“”)”}”(hŒ.. _typical_media_device:”h]”h}”(h]”h ]”h"]”h$]”h&]”Œrefid”Œtypical-media-device”uh1jh Khh¶hžhhŸh³ubŒkfigure”Œ kernel_figure”“”)”}”(hhh]”hŒfigure”“”)”}”(hhh]”(hŒimage”“”)”}”(hŒ~.. kernel-figure:: typical_media_device.svg :alt: typical_media_device.svg :align: center Typical Media Device ”h]”h}”(h]”h ]”h"]”h$]”h&]”Œalt”Œtypical_media_device.svg”Œuri”Œ,userspace-api/media/typical_media_device.svg”Œ candidates”}”Œ*”j8suh1j)hj&hŸh³h KubhŒcaption”“”)”}”(hŒTypical Media Device”h]”hŒTypical Media Device”…””}”(hj>hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j<hŸh³h Khj&ubeh}”(h]”Œid1”ah ]”h"]”h$]”h&]”Œalign”Œcenter”uh1j$hj!ubah}”(h]”jah ]”h"]”Œtypical_media_device”ah$]”h&]”uh1jhh¶hžhhŸh³h NŒexpect_referenced_by_name”}”jYjsŒexpect_referenced_by_id”}”jjsubhÊ)”}”(hŒaThe media infrastructure API was designed to control such devices. It is divided into five parts.”h]”hŒaThe media infrastructure API was designed to control such devices. It is divided into five parts.”…””}”(hj`hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h Khh¶hžhubhŒenumerated_list”“”)”}”(hhh]”(hŒ list_item”“”)”}”(hŒpThe :ref:`first part ` covers radio, video capture and output, cameras, analog TV devices and codecs. ”h]”hÊ)”}”(hŒoThe :ref:`first part ` covers radio, video capture and output, cameras, analog TV devices and codecs.”h]”(hŒThe ”…””}”(hjyhžhhŸNh Nubh)”}”(hŒ:ref:`first part `”h]”hæ)”}”(hjƒh]”hŒ first part”…””}”(hj…hžhhŸNh Nubah}”(h]”h ]”(hñŒstd”Œstd-ref”eh"]”h$]”h&]”uh1håhjubah}”(h]”h ]”h"]”h$]”h&]”Œrefdoc”hþŒ refdomain”jŒreftype”Œref”Œ refexplicit”ˆŒrefwarn”ˆjŒv4l2spec”uh1hhŸh³h KhjyubhŒO covers radio, video capture and output, cameras, analog TV devices and codecs.”…””}”(hjyhžhhŸNh Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h Khjuubah}”(h]”h ]”h"]”h$]”h&]”uh1jshjphžhhŸh³h Nubjt)”}”(hXwThe :ref:`second part ` covers the API used for digital TV and Internet reception via one of the several digital tv standards. While it is called as DVB API, in fact it covers several different video standards including DVB-T/T2, DVB-S/S2, DVB-C, ATSC, ISDB-T, ISDB-S, DTMB, etc. The complete list of supported standards can be found at :c:type:`fe_delivery_system`. ”h]”hÊ)”}”(hXvThe :ref:`second part ` covers the API used for digital TV and Internet reception via one of the several digital tv standards. While it is called as DVB API, in fact it covers several different video standards including DVB-T/T2, DVB-S/S2, DVB-C, ATSC, ISDB-T, ISDB-S, DTMB, etc. The complete list of supported standards can be found at :c:type:`fe_delivery_system`.”h]”(hŒThe ”…””}”(hjµhžhhŸNh Nubh)”}”(hŒ:ref:`second part `”h]”hæ)”}”(hj¿h]”hŒ second part”…””}”(hjÁhžhhŸNh Nubah}”(h]”h ]”(hñŒstd”Œstd-ref”eh"]”h$]”h&]”uh1håhj½ubah}”(h]”h ]”h"]”h$]”h&]”Œrefdoc”hþŒ refdomain”jËŒreftype”Œref”Œ refexplicit”ˆŒrefwarn”ˆjŒdvbapi”uh1hhŸh³h KhjµubhX: covers the API used for digital TV and Internet reception via one of the several digital tv standards. While it is called as DVB API, in fact it covers several different video standards including DVB-T/T2, DVB-S/S2, DVB-C, ATSC, ISDB-T, ISDB-S, DTMB, etc. The complete list of supported standards can be found at ”…””}”(hjµhžhhŸNh Nubh)”}”(hŒ:c:type:`fe_delivery_system`”h]”hŒliteral”“”)”}”(hjãh]”hŒfe_delivery_system”…””}”(hjçhžhhŸNh Nubah}”(h]”h ]”(hñŒc”Œc-type”eh"]”h$]”h&]”uh1jåhjáubah}”(h]”h ]”h"]”h$]”h&]”Œrefdoc”hþŒ refdomain”jñŒreftype”Œtype”Œ refexplicit”‰Œrefwarn”‰jŒfe_delivery_system”uh1hhŸh³h KhjµubhŒ.”…””}”(hjµhžhhŸNh Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h Khj±ubah}”(h]”h ]”h"]”h$]”h&]”uh1jshjphžhhŸh³h Nubjt)”}”(hŒMThe :ref:`third part ` covers the Remote Controller API. ”h]”hÊ)”}”(hŒLThe :ref:`third part ` covers the Remote Controller API.”h]”(hŒThe ”…””}”(hjhžhhŸNh Nubh)”}”(hŒ&:ref:`third part `”h]”hæ)”}”(hj!h]”hŒ third part”…””}”(hj#hžhhŸNh Nubah}”(h]”h ]”(hñŒstd”Œstd-ref”eh"]”h$]”h&]”uh1håhjubah}”(h]”h ]”h"]”h$]”h&]”Œrefdoc”hþŒ refdomain”j-Œreftype”Œref”Œ refexplicit”ˆŒrefwarn”ˆjŒremote_controllers”uh1hhŸh³h K#hjubhŒ" covers the Remote Controller API.”…””}”(hjhžhhŸNh Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h K#hjubah}”(h]”h ]”h"]”h$]”h&]”uh1jshjphžhhŸh³h Nubjt)”}”(hŒKThe :ref:`fourth part ` covers the Media Controller API. ”h]”hÊ)”}”(hŒJThe :ref:`fourth part ` covers the Media Controller API.”h]”(hŒThe ”…””}”(hjShžhhŸNh Nubh)”}”(hŒ%:ref:`fourth part `”h]”hæ)”}”(hj]h]”hŒ fourth part”…””}”(hj_hžhhŸNh Nubah}”(h]”h ]”(hñŒstd”Œstd-ref”eh"]”h$]”h&]”uh1håhj[ubah}”(h]”h ]”h"]”h$]”h&]”Œrefdoc”hþŒ refdomain”jiŒreftype”Œref”Œ refexplicit”ˆŒrefwarn”ˆjŒmedia_controller”uh1hhŸh³h K%hjSubhŒ! covers the Media Controller API.”…””}”(hjShžhhŸNh Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h K%hjOubah}”(h]”h ]”h"]”h$]”h&]”uh1jshjphžhhŸh³h Nubjt)”}”(hŒOThe :ref:`fifth part ` covers the CEC (Consumer Electronics Control) API. ”h]”hÊ)”}”(hŒNThe :ref:`fifth part ` covers the CEC (Consumer Electronics Control) API.”h]”(hŒThe ”…””}”(hjhžhhŸNh Nubh)”}”(hŒ:ref:`fifth part `”h]”hæ)”}”(hj™h]”hŒ fifth part”…””}”(hj›hžhhŸNh Nubah}”(h]”h ]”(hñŒstd”Œstd-ref”eh"]”h$]”h&]”uh1håhj—ubah}”(h]”h ]”h"]”h$]”h&]”Œrefdoc”hþŒ refdomain”j¥Œreftype”Œref”Œ refexplicit”ˆŒrefwarn”ˆjŒcec”uh1hhŸh³h K'hjubhŒ3 covers the CEC (Consumer Electronics Control) API.”…””}”(hjhžhhŸNh Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h K'hj‹ubah}”(h]”h ]”h"]”h$]”h&]”uh1jshjphžhhŸh³h Nubeh}”(h]”h ]”h"]”h$]”h&]”Œenumtype”Œarabic”Œprefix”hŒsuffix”Œ.”uh1jnhh¶hžhhŸh³h KubhÊ)”}”(hXÆIt should also be noted that a media device may also have audio components, like mixers, PCM capture, PCM playback, etc, which are controlled via ALSA API. 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