€•²DŒsphinx.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”Œ7/translations/zh_CN/userspace-api/media/v4l/planar-apis”Œmodname”NŒ classname”NŒ refexplicit”ˆuŒtagname”hhh ubh)”}”(hhh]”hŒChinese (Traditional)”…””}”hh2sbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ7/translations/zh_TW/userspace-api/media/v4l/planar-apis”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒItalian”…””}”hhFsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ7/translations/it_IT/userspace-api/media/v4l/planar-apis”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒJapanese”…””}”hhZsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ7/translations/ja_JP/userspace-api/media/v4l/planar-apis”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒKorean”…””}”hhnsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ7/translations/ko_KR/userspace-api/media/v4l/planar-apis”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒPortuguese (Brazilian)”…””}”hh‚sbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ7/translations/pt_BR/userspace-api/media/v4l/planar-apis”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒSpanish”…””}”hh–sbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ7/translations/sp_SP/userspace-api/media/v4l/planar-apis”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”uh1hµhhh²hh³ŒQ/var/lib/git/docbuild/linux/Documentation/userspace-api/media/v4l/planar-apis.rst”h´KubhŒtarget”“”)”}”(hŒ.. _planar-apis:”h]”h}”(h]”h ]”h"]”h$]”h&]”Œrefid”Œ planar-apis”uh1hÈh´Khhh²hh³hÇubhŒsection”“”)”}”(hhh]”(hŒtitle”“”)”}”(hŒSingle- and multi-planar APIs”h]”hŒSingle- and multi-planar APIs”…””}”(hhÝh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÛhhØh²hh³hÇh´KubhŒ paragraph”“”)”}”(hX?Some devices require data for each input or output video frame to be placed in discontiguous memory buffers. 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For examples of such formats see ”…””}”(hhíh²hh³Nh´Nubh)”}”(hŒ :ref:`pixfmt`”h]”hŒinline”“”)”}”(hh÷h]”hŒpixfmt”…””}”(hhûh²hh³Nh´Nubah}”(h]”h ]”(Œxref”Œstd”Œstd-ref”eh"]”h$]”h&]”uh1hùhhõubah}”(h]”h ]”h"]”h$]”h&]”Œrefdoc”Œ#userspace-api/media/v4l/planar-apis”Œ refdomain”jŒreftype”Œref”Œ refexplicit”‰Œrefwarn”ˆŒ reftarget”Œpixfmt”uh1hh³hÇh´K hhíubhŒ.”…””}”(hhíh²hh³Nh´Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÇh´K hhØh²hubhì)”}”(hŒÅInitially, V4L2 API did not support multi-planar buffers and a set of extensions has been introduced to handle them. Those extensions constitute what is being referred to as the "multi-planar API".”h]”hŒÉInitially, V4L2 API did not support multi-planar buffers and a set of extensions has been introduced to handle them. Those extensions constitute what is being referred to as the “multi-planar APIâ€.”…””}”(hj$h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÇh´KhhØh²hubhì)”}”(hXžSome of the V4L2 API calls and structures are interpreted differently, depending on whether single- or multi-planar API is being used. An application can choose whether to use one or the other by passing a corresponding buffer type to its ioctl calls. Multi-planar versions of buffer types are suffixed with an ``_MPLANE`` string. For a list of available multi-planar buffer types see enum :c:type:`v4l2_buf_type`.”h]”(hX7Some of the V4L2 API calls and structures are interpreted differently, depending on whether single- or multi-planar API is being used. An application can choose whether to use one or the other by passing a corresponding buffer type to its ioctl calls. Multi-planar versions of buffer types are suffixed with an ”…””}”(hj2h²hh³Nh´NubhŒliteral”“”)”}”(hŒ ``_MPLANE``”h]”hŒ_MPLANE”…””}”(hj<h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j:hj2ubhŒD string. For a list of available multi-planar buffer types see enum ”…””}”(hj2h²hh³Nh´Nubh)”}”(hŒ:c:type:`v4l2_buf_type`”h]”j;)”}”(hjPh]”hŒ v4l2_buf_type”…””}”(hjRh²hh³Nh´Nubah}”(h]”h ]”(jŒc”Œc-type”eh"]”h$]”h&]”uh1j:hjNubah}”(h]”h ]”h"]”h$]”h&]”Œrefdoc”jŒ refdomain”j\Œreftype”Œtype”Œ refexplicit”‰Œrefwarn”‰Œ c:parent_key”Œsphinx.domains.c”Œ LookupKey”“”)”}”Œdata”]”jnŒ ASTIdentifier”“”)”}”Œ identifier”ŒV4L”sbN†”asbjŒ v4l2_buf_type”uh1hh³hÇh´Khj2ubhŒ.”…””}”(hj2h²hh³Nh´Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÇh´KhhØh²hubh×)”}”(hhh]”(hÜ)”}”(hŒMulti-planar formats”h]”hŒMulti-planar formats”…””}”(hjŠh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÛhj‡h²hh³hÇh´Kubhì)”}”(hXMulti-planar API introduces new multi-planar formats. Those formats use a separate set of FourCC codes. It is important to distinguish between the multi-planar API and a multi-planar format. Multi-planar API calls can handle all single-planar formats as well (as long as they are passed in multi-planar API structures), while the single-planar API cannot handle multi-planar formats.”h]”hXMulti-planar API introduces new multi-planar formats. Those formats use a separate set of FourCC codes. It is important to distinguish between the multi-planar API and a multi-planar format. Multi-planar API calls can handle all single-planar formats as well (as long as they are passed in multi-planar API structures), while the single-planar API cannot handle multi-planar formats.”…””}”(hj˜h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÇh´K hj‡h²hubeh}”(h]”Œmulti-planar-formats”ah ]”h"]”Œmulti-planar formats”ah$]”h&]”uh1hÖhhØh²hh³hÇh´Kubh×)”}”(hhh]”(hÜ)”}”(hŒ;Calls that distinguish between single and multi-planar APIs”h]”hŒ;Calls that distinguish between single and multi-planar APIs”…””}”(hj±h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÛhj®h²hh³hÇh´K)ubhŒdefinition_list”“”)”}”(hhh]”(hŒdefinition_list_item”“”)”}”(hŒÐ:ref:`VIDIOC_QUERYCAP ` Two additional multi-planar capabilities are added. They can be set together with non-multi-planar ones for devices that handle both single- and multi-planar formats. ”h]”(hŒterm”“”)”}”(hŒ(:ref:`VIDIOC_QUERYCAP `”h]”h)”}”(hjÎh]”hú)”}”(hjÎh]”hŒVIDIOC_QUERYCAP”…””}”(hjÓh²hh³Nh´Nubah}”(h]”h ]”(jŒstd”Œstd-ref”eh"]”h$]”h&]”uh1hùhjÐubah}”(h]”h ]”h"]”h$]”h&]”Œrefdoc”jŒ refdomain”jÝŒreftype”Œref”Œ refexplicit”ˆŒrefwarn”ˆjŒvidioc_querycap”uh1hh³hÇh´K.hjÌubah}”(h]”h ]”h"]”h$]”h&]”uh1jÊh³hÇh´K.hjÆubhŒ definition”“”)”}”(hhh]”hì)”}”(hŒ¦Two additional multi-planar capabilities are added. They can be set together with non-multi-planar ones for devices that handle both single- and multi-planar formats.”h]”hŒ¦Two additional multi-planar capabilities are added. They can be set together with non-multi-planar ones for devices that handle both single- and multi-planar formats.”…””}”(hjúh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÇh´K,hj÷ubah}”(h]”h ]”h"]”h$]”h&]”uh1jõhjÆubeh}”(h]”h ]”h"]”h$]”h&]”uh1jÄh³hÇh´K.hjÁubjÅ)”}”(hXs:ref:`VIDIOC_G_FMT `, :ref:`VIDIOC_S_FMT `, :ref:`VIDIOC_TRY_FMT ` New structures for describing multi-planar formats are added: struct :c:type:`v4l2_pix_format_mplane` and struct :c:type:`v4l2_plane_pix_format`. Drivers may define new multi-planar formats, which have distinct FourCC codes from the existing single-planar ones. ”h]”(jË)”}”(hŒl:ref:`VIDIOC_G_FMT `, :ref:`VIDIOC_S_FMT `, :ref:`VIDIOC_TRY_FMT `”h]”(h)”}”(hŒ":ref:`VIDIOC_G_FMT `”h]”hú)”}”(hjh]”hŒ VIDIOC_G_FMT”…””}”(hj h²hh³Nh´Nubah}”(h]”h ]”(jŒstd”Œstd-ref”eh"]”h$]”h&]”uh1hùhjubah}”(h]”h ]”h"]”h$]”h&]”Œrefdoc”jŒ refdomain”j*Œreftype”Œref”Œ refexplicit”ˆŒrefwarn”ˆjŒ vidioc_g_fmt”uh1hh³hÇh´K5hjubhŒ, ”…””}”(hjh²hh³Nh´Nubh)”}”(hŒ":ref:`VIDIOC_S_FMT `”h]”hú)”}”(hjBh]”hŒ VIDIOC_S_FMT”…””}”(hjDh²hh³Nh´Nubah}”(h]”h ]”(jŒstd”Œstd-ref”eh"]”h$]”h&]”uh1hùhj@ubah}”(h]”h ]”h"]”h$]”h&]”Œrefdoc”jŒ refdomain”jNŒreftype”Œref”Œ refexplicit”ˆŒrefwarn”ˆjŒ vidioc_g_fmt”uh1hh³hÇh´K5hjubhŒ, ”…””}”hjsbh)”}”(hŒ$:ref:`VIDIOC_TRY_FMT `”h]”hú)”}”(hjfh]”hŒVIDIOC_TRY_FMT”…””}”(hjhh²hh³Nh´Nubah}”(h]”h ]”(jŒstd”Œstd-ref”eh"]”h$]”h&]”uh1hùhjdubah}”(h]”h ]”h"]”h$]”h&]”Œrefdoc”jŒ refdomain”jrŒreftype”Œref”Œ refexplicit”ˆŒrefwarn”ˆjŒ vidioc_g_fmt”uh1hh³hÇh´K5hjubeh}”(h]”h ]”h"]”h$]”h&]”uh1jÊh³hÇh´K5hjubjö)”}”(hhh]”hì)”}”(hXNew structures for describing multi-planar formats are added: struct :c:type:`v4l2_pix_format_mplane` and struct :c:type:`v4l2_plane_pix_format`. Drivers may define new multi-planar formats, which have distinct FourCC codes from the existing single-planar ones.”h]”(hŒENew structures for describing multi-planar formats are added: struct ”…””}”(hjh²hh³Nh´Nubh)”}”(hŒ :c:type:`v4l2_pix_format_mplane`”h]”j;)”}”(hj—h]”hŒv4l2_pix_format_mplane”…””}”(hj™h²hh³Nh´Nubah}”(h]”h ]”(jj\Œc-type”eh"]”h$]”h&]”uh1j:hj•ubah}”(h]”h ]”h"]”h$]”h&]”Œrefdoc”jŒ refdomain”j\Œreftype”Œtype”Œ refexplicit”‰Œrefwarn”‰jmjqjŒv4l2_pix_format_mplane”uh1hh³hÇh´K1hjubhŒ and struct ”…””}”(hjh²hh³Nh´Nubh)”}”(hŒ:c:type:`v4l2_plane_pix_format`”h]”j;)”}”(hjºh]”hŒv4l2_plane_pix_format”…””}”(hj¼h²hh³Nh´Nubah}”(h]”h ]”(jj\Œc-type”eh"]”h$]”h&]”uh1j:hj¸ubah}”(h]”h ]”h"]”h$]”h&]”Œrefdoc”jŒ refdomain”j\Œreftype”Œtype”Œ refexplicit”‰Œrefwarn”‰jmjqjŒv4l2_plane_pix_format”uh1hh³hÇh´K1hjubhŒu. Drivers may define new multi-planar formats, which have distinct FourCC codes from the existing single-planar ones.”…””}”(hjh²hh³Nh´Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1hëh³hÇh´K1hjŠubah}”(h]”h ]”h"]”h$]”h&]”uh1jõhjubeh}”(h]”h ]”h"]”h$]”h&]”uh1jÄh³hÇh´K5hjÁh²hubjÅ)”}”(hX:ref:`VIDIOC_QBUF `, :ref:`VIDIOC_DQBUF `, :ref:`VIDIOC_QUERYBUF ` A new struct :c:type:`v4l2_plane` structure for describing planes is added. Arrays of this structure are passed in the new ``m.planes`` field of struct :c:type:`v4l2_buffer`. ”h]”(jË)”}”(hŒm:ref:`VIDIOC_QBUF `, :ref:`VIDIOC_DQBUF `, :ref:`VIDIOC_QUERYBUF `”h]”(h)”}”(hŒ :ref:`VIDIOC_QBUF `”h]”hú)”}”(hj÷h]”hŒ VIDIOC_QBUF”…””}”(hjùh²hh³Nh´Nubah}”(h]”h ]”(jŒstd”Œstd-ref”eh"]”h$]”h&]”uh1hùhjõubah}”(h]”h ]”h"]”h$]”h&]”Œrefdoc”jŒ refdomain”jŒreftype”Œref”Œ refexplicit”ˆŒrefwarn”ˆjŒ vidioc_qbuf”uh1hh³hÇh´K;hjñubhŒ, ”…””}”(hjñh²hh³Nh´Nubh)”}”(hŒ!:ref:`VIDIOC_DQBUF `”h]”hú)”}”(hjh]”hŒ VIDIOC_DQBUF”…””}”(hjh²hh³Nh´Nubah}”(h]”h ]”(jŒstd”Œstd-ref”eh"]”h$]”h&]”uh1hùhjubah}”(h]”h ]”h"]”h$]”h&]”Œrefdoc”jŒ refdomain”j'Œreftype”Œref”Œ refexplicit”ˆŒrefwarn”ˆjŒ vidioc_qbuf”uh1hh³hÇh´K;hjñubhŒ, ”…””}”hjñsbh)”}”(hŒ(:ref:`VIDIOC_QUERYBUF `”h]”hú)”}”(hj?h]”hŒVIDIOC_QUERYBUF”…””}”(hjAh²hh³Nh´Nubah}”(h]”h ]”(jŒstd”Œstd-ref”eh"]”h$]”h&]”uh1hùhj=ubah}”(h]”h ]”h"]”h$]”h&]”Œrefdoc”jŒ refdomain”jKŒreftype”Œref”Œ refexplicit”ˆŒrefwarn”ˆjŒvidioc_querybuf”uh1hh³hÇh´K;hjñubeh}”(h]”h ]”h"]”h$]”h&]”uh1jÊh³hÇh´K;hjíubjö)”}”(hhh]”hì)”}”(hŒ®A new struct :c:type:`v4l2_plane` structure for describing planes is added. Arrays of this structure are passed in the new ``m.planes`` field of struct :c:type:`v4l2_buffer`.”h]”(hŒ A new struct ”…””}”(hjfh²hh³Nh´Nubh)”}”(hŒ:c:type:`v4l2_plane`”h]”j;)”}”(hjph]”hŒ v4l2_plane”…””}”(hjrh²hh³Nh´Nubah}”(h]”h ]”(jj\Œc-type”eh"]”h$]”h&]”uh1j:hjnubah}”(h]”h ]”h"]”h$]”h&]”Œrefdoc”jŒ refdomain”j\Œreftype”Œtype”Œ refexplicit”‰Œrefwarn”‰jmjqjŒ v4l2_plane”uh1hh³hÇh´K8hjfubhŒZ structure for describing planes is added. 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