diff options
Diffstat (limited to 'Documentation/userspace-api/media/v4l')
240 files changed, 1534 insertions, 3352 deletions
diff --git a/Documentation/userspace-api/media/v4l/app-pri.rst b/Documentation/userspace-api/media/v4l/app-pri.rst index 5018ede2706f..626a42f2e138 100644 --- a/Documentation/userspace-api/media/v4l/app-pri.rst +++ b/Documentation/userspace-api/media/v4l/app-pri.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _app-pri: diff --git a/Documentation/userspace-api/media/v4l/async.rst b/Documentation/userspace-api/media/v4l/async.rst index 8bc4a726c95e..d6960ff5c382 100644 --- a/Documentation/userspace-api/media/v4l/async.rst +++ b/Documentation/userspace-api/media/v4l/async.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _async: diff --git a/Documentation/userspace-api/media/v4l/audio.rst b/Documentation/userspace-api/media/v4l/audio.rst index d6bb85092e02..17f0b1c89908 100644 --- a/Documentation/userspace-api/media/v4l/audio.rst +++ b/Documentation/userspace-api/media/v4l/audio.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _audio: diff --git a/Documentation/userspace-api/media/v4l/bayer.svg b/Documentation/userspace-api/media/v4l/bayer.svg index 82e805c68c1f..c500a28f0817 100644 --- a/Documentation/userspace-api/media/v4l/bayer.svg +++ b/Documentation/userspace-api/media/v4l/bayer.svg @@ -1,31 +1,5 @@ <?xml version="1.0" encoding="UTF-8"?> -<!-- - This file is dual-licensed: you can use it either under the terms - of the GPL 2.0 or the GFDL 1.1+ license, at your option. Note that this - dual licensing only applies to this file, and not this project as a - whole. - - a) This file is free software; you can redistribute it and/or - modify it under the terms of the GNU General Public License as - published by the Free Software Foundation version 2 of - the License. - - This file is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - Or, alternatively, - - b) Permission is granted to copy, distribute and/or modify this - document under the terms of the GNU Free Documentation License, - Version 1.1 or any later version published by the Free Software - Foundation, with no Invariant Sections, no Front-Cover Texts - and no Back-Cover Texts. A copy of the license is included at - Documentation/userspace-api/media/fdl-appendix.rst. - - TODO: replace it to GPL-2.0 OR GFDL-1.1-or-later WITH no-invariant-sections ---> +<!-- SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later --> <svg id="svg2" width="164.15mm" height="46.771mm" fill-rule="evenodd" stroke-linejoin="round" stroke-width="28.222" preserveAspectRatio="xMidYMid" version="1.2" viewBox="0 0 16415.333 4677.1107" xml:space="preserve" xmlns="http://www.w3.org/2000/svg" xmlns:cc="http://creativecommons.org/ns#" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"><metadata id="metadata652"><rdf:RDF><cc:Work rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type rdf:resource="http://purl.org/dc/dcmitype/StillImage"/><dc:title/></cc:Work></rdf:RDF></metadata><g id="g186" class="com.sun.star.drawing.CustomShape" transform="translate(-3285.9 -3185.9)"><g id="id6"><rect id="rect189" class="BoundingBox" x="3299" y="3199" width="1303" height="1203" fill="none"/><path id="path191" d="m3950 4400h-650v-1200h1300v1200h-650z" fill="#00f"/><path id="path193" d="m3950 4400h-650v-1200h1300v1200h-650z" fill="none" stroke="#3465a4"/><text id="text195" class="TextShape"><tspan id="tspan197" class="TextParagraph" font-family="sans-serif" font-size="635px" font-weight="400"><tspan id="tspan199" class="TextPosition" x="3739" y="4021"><tspan id="tspan201" fill="#ffffff">B</tspan></tspan></tspan></text> </g></g><g id="g203" class="com.sun.star.drawing.CustomShape" transform="translate(-3285.9 -3185.9)"><g id="id7"><rect id="rect206" class="BoundingBox" x="4599" y="3199" width="1303" height="1203" fill="none"/><path id="path208" d="m5250 4400h-650v-1200h1300v1200h-650z" fill="#0c0"/><path id="path210" d="m5250 4400h-650v-1200h1300v1200h-650z" fill="none" stroke="#3465a4"/><text id="text212" class="TextShape"><tspan id="tspan214" class="TextParagraph" font-family="sans-serif" font-size="635px" font-weight="400"><tspan id="tspan216" class="TextPosition" x="5003" y="4021"><tspan id="tspan218" fill="#ffffff">G</tspan></tspan></tspan></text> diff --git a/Documentation/userspace-api/media/v4l/biblio.rst b/Documentation/userspace-api/media/v4l/biblio.rst index 3c9634173e82..7869b6f6ff72 100644 --- a/Documentation/userspace-api/media/v4l/biblio.rst +++ b/Documentation/userspace-api/media/v4l/biblio.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later ********** References diff --git a/Documentation/userspace-api/media/v4l/buffer.rst b/Documentation/userspace-api/media/v4l/buffer.rst index 57e752aaf414..7dbdfbb4a0a9 100644 --- a/Documentation/userspace-api/media/v4l/buffer.rst +++ b/Documentation/userspace-api/media/v4l/buffer.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _buffer: @@ -40,7 +34,6 @@ mem-to-mem devices is an exception to the rule: the timestamp source flags are copied from the OUTPUT video buffer to the CAPTURE video buffer. - Interactions between formats, controls and buffers ================================================== @@ -159,7 +152,6 @@ based on the queried sizes (for instance by allocating a set of buffers large enough for all the desired formats and controls, or by allocating separate set of appropriately sized buffers for each use case). - .. c:type:: v4l2_buffer struct v4l2_buffer @@ -264,7 +256,7 @@ struct v4l2_buffer ``V4L2_MEMORY_MMAP`` this is the offset of the buffer from the start of the device memory. The value is returned by the driver and apart of serving as parameter to the - :ref:`mmap() <func-mmap>` function not useful for applications. + :c:func:`mmap()` function not useful for applications. See :ref:`mmap` for details * - unsigned long - ``userptr`` @@ -317,7 +309,6 @@ struct v4l2_buffer given, then ``EINVAL`` will be returned. - .. c:type:: v4l2_plane struct v4l2_plane @@ -357,7 +348,7 @@ struct v4l2_plane - ``mem_offset`` - When the memory type in the containing struct :c:type:`v4l2_buffer` is ``V4L2_MEMORY_MMAP``, this - is the value that should be passed to :ref:`mmap() <func-mmap>`, + is the value that should be passed to :c:func:`mmap()`, similar to the ``offset`` field in struct :c:type:`v4l2_buffer`. * - unsigned long @@ -391,7 +382,6 @@ struct v4l2_plane applications. - .. c:type:: v4l2_buf_type enum v4l2_buf_type @@ -455,7 +445,6 @@ enum v4l2_buf_type - Buffer for metadata output, see :ref:`metadata`. - .. _buffer-flags: Buffer Flags @@ -689,37 +678,6 @@ Buffer Flags .. _memory-flags: -Memory Consistency Flags -======================== - -.. tabularcolumns:: |p{7.0cm}|p{2.2cm}|p{8.3cm}| - -.. cssclass:: longtable - -.. flat-table:: - :header-rows: 0 - :stub-columns: 0 - :widths: 3 1 4 - - * .. _`V4L2-FLAG-MEMORY-NON-CONSISTENT`: - - - ``V4L2_FLAG_MEMORY_NON_CONSISTENT`` - - 0x00000001 - - A buffer is allocated either in consistent (it will be automatically - coherent between the CPU and the bus) or non-consistent memory. The - latter can provide performance gains, for instance the CPU cache - sync/flush operations can be avoided if the buffer is accessed by the - corresponding device only and the CPU does not read/write to/from that - buffer. However, this requires extra care from the driver -- it must - guarantee memory consistency by issuing a cache flush/sync when - consistency is needed. If this flag is set V4L2 will attempt to - allocate the buffer in non-consistent memory. The flag takes effect - only if the buffer is used for :ref:`memory mapping <mmap>` I/O and the - queue reports the :ref:`V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS - <V4L2-BUF-CAP-SUPPORTS-MMAP-CACHE-HINTS>` capability. - -.. c:type:: v4l2_memory - enum v4l2_memory ================ @@ -744,7 +702,6 @@ enum v4l2_memory - The buffer is used for :ref:`DMA shared buffer <dmabuf>` I/O. - Timecodes ========= @@ -753,7 +710,6 @@ The :c:type:`v4l2_buffer_timecode` structure is designed to hold a (struct :c:type:`timeval` timestamps are stored in the struct :c:type:`v4l2_buffer` ``timestamp`` field.) - .. c:type:: v4l2_timecode struct v4l2_timecode @@ -790,7 +746,6 @@ struct v4l2_timecode - The "user group" bits from the timecode. - .. _timecode-type: Timecode Types @@ -820,7 +775,6 @@ Timecode Types - - .. _timecode-flags: Timecode Flags diff --git a/Documentation/userspace-api/media/v4l/capture-example.rst b/Documentation/userspace-api/media/v4l/capture-example.rst index 6aa67c5aff8f..25891320b7ad 100644 --- a/Documentation/userspace-api/media/v4l/capture-example.rst +++ b/Documentation/userspace-api/media/v4l/capture-example.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _capture-example: diff --git a/Documentation/userspace-api/media/v4l/capture.c.rst b/Documentation/userspace-api/media/v4l/capture.c.rst index 30f7c816e858..ccbd52c3897f 100644 --- a/Documentation/userspace-api/media/v4l/capture.c.rst +++ b/Documentation/userspace-api/media/v4l/capture.c.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later file: media/v4l/capture.c ========================= diff --git a/Documentation/userspace-api/media/v4l/colorspaces-defs.rst b/Documentation/userspace-api/media/v4l/colorspaces-defs.rst index 01404e1f609a..fe9f8aa8ab9d 100644 --- a/Documentation/userspace-api/media/v4l/colorspaces-defs.rst +++ b/Documentation/userspace-api/media/v4l/colorspaces-defs.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later **************************** Defining Colorspaces in V4L2 @@ -36,8 +29,7 @@ whole range, 0-255, dividing the angular value by 1.41. The enum :c:type:`v4l2_hsv_encoding` specifies which encoding is used. .. note:: The default R'G'B' quantization is full range for all - colorspaces except for BT.2020 which uses limited range R'G'B' - quantization. + colorspaces. HSV formats are always full range. .. tabularcolumns:: |p{6.7cm}|p{10.8cm}| @@ -169,8 +161,8 @@ whole range, 0-255, dividing the angular value by 1.41. The enum - Details * - ``V4L2_QUANTIZATION_DEFAULT`` - Use the default quantization encoding as defined by the - colorspace. This is always full range for R'G'B' (except for the - BT.2020 colorspace) and HSV. It is usually limited range for Y'CbCr. + colorspace. This is always full range for R'G'B' and HSV. + It is usually limited range for Y'CbCr. * - ``V4L2_QUANTIZATION_FULL_RANGE`` - Use the full range quantization encoding. I.e. the range [0…1] is mapped to [0…255] (with possible clipping to [1…254] to avoid the @@ -180,4 +172,4 @@ whole range, 0-255, dividing the angular value by 1.41. The enum * - ``V4L2_QUANTIZATION_LIM_RANGE`` - Use the limited range quantization encoding. I.e. the range [0…1] is mapped to [16…235]. Cb and Cr are mapped from [-0.5…0.5] to - [16…240]. + [16…240]. Limited Range cannot be used with HSV. diff --git a/Documentation/userspace-api/media/v4l/colorspaces-details.rst b/Documentation/userspace-api/media/v4l/colorspaces-details.rst index 300c5d2e7d0f..014e7c9fc655 100644 --- a/Documentation/userspace-api/media/v4l/colorspaces-details.rst +++ b/Documentation/userspace-api/media/v4l/colorspaces-details.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later ******************************** Detailed Colorspace Descriptions @@ -377,9 +370,8 @@ Colorspace BT.2020 (V4L2_COLORSPACE_BT2020) The :ref:`itu2020` standard defines the colorspace used by Ultra-high definition television (UHDTV). The default transfer function is ``V4L2_XFER_FUNC_709``. The default Y'CbCr encoding is -``V4L2_YCBCR_ENC_BT2020``. The default R'G'B' quantization is limited -range (!), and so is the default Y'CbCr quantization. The chromaticities -of the primary colors and the white reference are: +``V4L2_YCBCR_ENC_BT2020``. The default Y'CbCr quantization is limited range. +The chromaticities of the primary colors and the white reference are: diff --git a/Documentation/userspace-api/media/v4l/colorspaces.rst b/Documentation/userspace-api/media/v4l/colorspaces.rst index 0846df9066c5..2aa0dda4fd01 100644 --- a/Documentation/userspace-api/media/v4l/colorspaces.rst +++ b/Documentation/userspace-api/media/v4l/colorspaces.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _colorspaces: diff --git a/Documentation/userspace-api/media/v4l/common-defs.rst b/Documentation/userspace-api/media/v4l/common-defs.rst index 370a1e364a51..6ae42ac7ddb7 100644 --- a/Documentation/userspace-api/media/v4l/common-defs.rst +++ b/Documentation/userspace-api/media/v4l/common-defs.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _common-defs: diff --git a/Documentation/userspace-api/media/v4l/common.rst b/Documentation/userspace-api/media/v4l/common.rst index 7d81c58a13cd..d84aeb703165 100644 --- a/Documentation/userspace-api/media/v4l/common.rst +++ b/Documentation/userspace-api/media/v4l/common.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _common: diff --git a/Documentation/userspace-api/media/v4l/compat.rst b/Documentation/userspace-api/media/v4l/compat.rst index 055286b86e9b..b63b8392dec6 100644 --- a/Documentation/userspace-api/media/v4l/compat.rst +++ b/Documentation/userspace-api/media/v4l/compat.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _compat: diff --git a/Documentation/userspace-api/media/v4l/constraints.svg b/Documentation/userspace-api/media/v4l/constraints.svg index 1dfe51a9839d..ac5f82bc6d1a 100644 --- a/Documentation/userspace-api/media/v4l/constraints.svg +++ b/Documentation/userspace-api/media/v4l/constraints.svg @@ -1,31 +1,5 @@ <?xml version="1.0" encoding="UTF-8"?> -<!-- - This file is dual-licensed: you can use it either under the terms - of the GPL 2.0 or the GFDL 1.1+ license, at your option. Note that this - dual licensing only applies to this file, and not this project as a - whole. - - a) This file is free software; you can redistribute it and/or - modify it under the terms of the GNU General Public License as - published by the Free Software Foundation version 2 of - the License. - - This file is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - Or, alternatively, - - b) Permission is granted to copy, distribute and/or modify this - document under the terms of the GNU Free Documentation License, - Version 1.1 or any later version published by the Free Software - Foundation, with no Invariant Sections, no Front-Cover Texts - and no Back-Cover Texts. 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Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _control: diff --git a/Documentation/userspace-api/media/v4l/crop.rst b/Documentation/userspace-api/media/v4l/crop.rst index cb7e2341aedf..3fe185e25ccf 100644 --- a/Documentation/userspace-api/media/v4l/crop.rst +++ b/Documentation/userspace-api/media/v4l/crop.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _crop: diff --git a/Documentation/userspace-api/media/v4l/crop.svg b/Documentation/userspace-api/media/v4l/crop.svg index 4cd47f98e7c8..5483227757e7 100644 --- a/Documentation/userspace-api/media/v4l/crop.svg +++ b/Documentation/userspace-api/media/v4l/crop.svg @@ -1,14 +1,5 @@ <?xml version="1.0" encoding="UTF-8" standalone="no"?> -<!-- - Permission is granted to copy, distribute and/or modify this - document under the terms of the GNU Free Documentation License, - Version 1.1 or any later version published by the Free Software - Foundation, with no Invariant Sections, no Front-Cover Texts - and no Back-Cover Texts. A copy of the license is included at - Documentation/userspace-api/media/fdl-appendix.rst. - - TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections ---> +<!-- SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later --> <svg xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:cc="http://creativecommons.org/ns#" diff --git a/Documentation/userspace-api/media/v4l/depth-formats.rst b/Documentation/userspace-api/media/v4l/depth-formats.rst index 6742486a83b5..b4f3fc229c85 100644 --- a/Documentation/userspace-api/media/v4l/depth-formats.rst +++ b/Documentation/userspace-api/media/v4l/depth-formats.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _depth-formats: diff --git a/Documentation/userspace-api/media/v4l/dev-capture.rst b/Documentation/userspace-api/media/v4l/dev-capture.rst index 44d3094093ab..fe58fd450e2f 100644 --- a/Documentation/userspace-api/media/v4l/dev-capture.rst +++ b/Documentation/userspace-api/media/v4l/dev-capture.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _capture: @@ -26,7 +20,6 @@ device. .. note:: The same device file names are used for video output devices. - Querying Capabilities ===================== @@ -41,7 +34,6 @@ functions they may also support the :ref:`video overlay <overlay>` streaming I/O methods must be supported. Tuners and audio inputs are optional. - Supplemental Functions ====================== @@ -52,7 +44,6 @@ Video capture devices shall support :ref:`audio input <audio>`, :ref:`video input <video>` ioctls must be supported by all video capture devices. - Image Format Negotiation ======================== @@ -62,7 +53,7 @@ capture, the latter how images are stored in memory, i. e. in RGB or YUV format, the number of bits per pixel or width and height. Together they also define how images are scaled in the process. -As usual these parameters are *not* reset at :ref:`open() <func-open>` +As usual these parameters are *not* reset at :c:func:`open()` time to permit Unix tool chains, programming a device and then reading from it as if it was a plain file. Well written V4L2 applications ensure they really get what they want, including cropping and scaling. @@ -102,7 +93,6 @@ and :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctl, even if :ref:`VIDIOC_S_FMT <VIDIOC requests and always returns default parameters as :ref:`VIDIOC_G_FMT <VIDIOC_G_FMT>` does. :ref:`VIDIOC_TRY_FMT <VIDIOC_G_FMT>` is optional. - Reading Images ============== diff --git a/Documentation/userspace-api/media/v4l/dev-encoder.rst b/Documentation/userspace-api/media/v4l/dev-encoder.rst index fb44f20924de..aa338b9624b0 100644 --- a/Documentation/userspace-api/media/v4l/dev-encoder.rst +++ b/Documentation/userspace-api/media/v4l/dev-encoder.rst @@ -1,28 +1,4 @@ -.. This file is dual-licensed: you can use it either under the terms -.. of the GPL 2.0 or the GFDL 1.1+ license, at your option. Note that this -.. dual licensing only applies to this file, and not this project as a -.. whole. -.. -.. a) This file is free software; you can redistribute it and/or -.. modify it under the terms of the GNU General Public License as -.. published by the Free Software Foundation version 2 of -.. the License. -.. -.. This file is distributed in the hope that it will be useful, -.. but WITHOUT ANY WARRANTY; without even the implied warranty of -.. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -.. GNU General Public License for more details. -.. -.. Or, alternatively, -.. -.. b) Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GPL-2.0 OR GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later .. _encoder: diff --git a/Documentation/userspace-api/media/v4l/dev-event.rst b/Documentation/userspace-api/media/v4l/dev-event.rst index d09034fd680a..f34f9cf6ce6c 100644 --- a/Documentation/userspace-api/media/v4l/dev-event.rst +++ b/Documentation/userspace-api/media/v4l/dev-event.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _event: diff --git a/Documentation/userspace-api/media/v4l/dev-mem2mem.rst b/Documentation/userspace-api/media/v4l/dev-mem2mem.rst index 40aff9c95267..d8db46886555 100644 --- a/Documentation/userspace-api/media/v4l/dev-mem2mem.rst +++ b/Documentation/userspace-api/media/v4l/dev-mem2mem.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _mem2mem: diff --git a/Documentation/userspace-api/media/v4l/dev-meta.rst b/Documentation/userspace-api/media/v4l/dev-meta.rst index 6d2c5a79b370..8ec3a73dcae4 100644 --- a/Documentation/userspace-api/media/v4l/dev-meta.rst +++ b/Documentation/userspace-api/media/v4l/dev-meta.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _metadata: diff --git a/Documentation/userspace-api/media/v4l/dev-osd.rst b/Documentation/userspace-api/media/v4l/dev-osd.rst index ad0c156c7898..8e4be9129e75 100644 --- a/Documentation/userspace-api/media/v4l/dev-osd.rst +++ b/Documentation/userspace-api/media/v4l/dev-osd.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _osd: diff --git a/Documentation/userspace-api/media/v4l/dev-output.rst b/Documentation/userspace-api/media/v4l/dev-output.rst index e4f2a1d8b0fc..eadcb4aa813b 100644 --- a/Documentation/userspace-api/media/v4l/dev-output.rst +++ b/Documentation/userspace-api/media/v4l/dev-output.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _output: @@ -25,7 +19,6 @@ device. .. note:: The same device file names are used also for video capture devices. - Querying Capabilities ===================== @@ -39,7 +32,6 @@ functions they may also support the :ref:`raw VBI output <raw-vbi>` streaming I/O methods must be supported. Modulators and audio outputs are optional. - Supplemental Functions ====================== @@ -50,7 +42,6 @@ Video output devices shall support :ref:`audio output <audio>`, :ref:`video output <video>` ioctls must be supported by all video output devices. - Image Format Negotiation ======================== @@ -60,7 +51,7 @@ the latter how images are stored in memory, i. e. in RGB or YUV format, the number of bits per pixel or width and height. Together they also define how images are scaled in the process. -As usual these parameters are *not* reset at :ref:`open() <func-open>` +As usual these parameters are *not* reset at :c:func:`open()` time to permit Unix tool chains, programming a device and then writing to it as if it was a plain file. Well written V4L2 applications ensure they really get what they want, including cropping and scaling. @@ -99,7 +90,6 @@ and :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctl, even if :ref:`VIDIOC_S_FMT <VIDIOC requests and always returns default parameters as :ref:`VIDIOC_G_FMT <VIDIOC_G_FMT>` does. :ref:`VIDIOC_TRY_FMT <VIDIOC_G_FMT>` is optional. - Writing Images ============== diff --git a/Documentation/userspace-api/media/v4l/dev-overlay.rst b/Documentation/userspace-api/media/v4l/dev-overlay.rst index 7246d560173d..07cc92564c16 100644 --- a/Documentation/userspace-api/media/v4l/dev-overlay.rst +++ b/Documentation/userspace-api/media/v4l/dev-overlay.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _overlay: diff --git a/Documentation/userspace-api/media/v4l/dev-radio.rst b/Documentation/userspace-api/media/v4l/dev-radio.rst index c0edd7b7d201..284ce96a1637 100644 --- a/Documentation/userspace-api/media/v4l/dev-radio.rst +++ b/Documentation/userspace-api/media/v4l/dev-radio.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _radio: diff --git a/Documentation/userspace-api/media/v4l/dev-raw-vbi.rst b/Documentation/userspace-api/media/v4l/dev-raw-vbi.rst index 0307d44e17cb..3f43a01ba938 100644 --- a/Documentation/userspace-api/media/v4l/dev-raw-vbi.rst +++ b/Documentation/userspace-api/media/v4l/dev-raw-vbi.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _raw-vbi: @@ -39,7 +33,6 @@ applications must call the :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctl. Accessed as ``/dev/vbi``, raw VBI capturing or output is the default device function. - Querying Capabilities ===================== @@ -51,7 +44,6 @@ in the ``capabilities`` field of struct read/write, streaming or asynchronous I/O methods must be supported. VBI devices may or may not have a tuner or modulator. - Supplemental Functions ====================== @@ -60,7 +52,6 @@ VBI devices shall support :ref:`video input or output <video>`, ioctls as needed. The :ref:`video standard <standard>` ioctls provide information vital to program a VBI device, therefore must be supported. - Raw VBI Format Negotiation ========================== @@ -69,7 +60,7 @@ frequency. To properly interpret the data V4L2 specifies an ioctl to query the sampling parameters. Moreover, to allow for some flexibility applications can also suggest different parameters. -As usual these parameters are *not* reset at :ref:`open() <func-open>` +As usual these parameters are *not* reset at :c:func:`open()` time to permit Unix tool chains, programming a device and then reading from it as if it was a plain file. Well written V4L2 applications should always ensure they really get what they want, requesting reasonable @@ -98,8 +89,8 @@ happen for instance when the video and VBI areas to capture would overlap, or when the driver supports multiple opens and another process already requested VBI capturing or output. Anyway, applications must expect other resource allocation points which may return ``EBUSY``, at the -:ref:`VIDIOC_STREAMON` ioctl and the first :ref:`read() <func-read>` -, :ref:`write() <func-write>` and :ref:`select() <func-select>` calls. +:ref:`VIDIOC_STREAMON` ioctl and the first :c:func:`read()` +, :c:func:`write()` and :c:func:`select()` calls. VBI devices must implement both the :ref:`VIDIOC_G_FMT <VIDIOC_G_FMT>` and :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctl, even if :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ignores all requests @@ -189,7 +180,6 @@ and always returns default parameters as :ref:`VIDIOC_G_FMT <VIDIOC_G_FMT>` does - This array is reserved for future extensions. Drivers and applications must set it to zero. - .. tabularcolumns:: |p{4.4cm}|p{1.5cm}|p{11.6cm}| .. _vbifmt-flags: @@ -225,7 +215,6 @@ and always returns default parameters as :ref:`VIDIOC_G_FMT <VIDIOC_G_FMT>` does non-zero. - .. _vbi-hsync: .. kernel-figure:: vbi_hsync.svg @@ -234,7 +223,6 @@ and always returns default parameters as :ref:`VIDIOC_G_FMT <VIDIOC_G_FMT>` does **Figure 4.1. Line synchronization** - .. _vbi-525: .. kernel-figure:: vbi_525.svg @@ -258,7 +246,6 @@ negotiation, or after switching the video standard which may invalidate the negotiated VBI parameters, should be refused by the driver. A format change during active I/O is not permitted. - Reading and writing VBI images ============================== @@ -268,7 +255,6 @@ consisting of two fields of VBI images immediately following in memory. The total size of a frame computes as follows: - .. code-block:: c (count[0] + count[1]) * samples_per_line * sample size in bytes @@ -283,8 +269,8 @@ The latter bears the possibility of synchronizing video and VBI data by using buffer timestamps. Remember the :ref:`VIDIOC_STREAMON <VIDIOC_STREAMON>` ioctl and the -first :ref:`read() <func-read>`, :ref:`write() <func-write>` and -:ref:`select() <func-select>` call can be resource allocation +first :c:func:`read()`, :c:func:`write()` and +:c:func:`select()` call can be resource allocation points returning an ``EBUSY`` error code if the required hardware resources are temporarily unavailable, for example the device is already in use by another process. diff --git a/Documentation/userspace-api/media/v4l/dev-rds.rst b/Documentation/userspace-api/media/v4l/dev-rds.rst index 13dba4a4180c..207216d5e6a5 100644 --- a/Documentation/userspace-api/media/v4l/dev-rds.rst +++ b/Documentation/userspace-api/media/v4l/dev-rds.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _rds: @@ -35,7 +29,6 @@ The RDS interface does not support this format. Should support for MMBS the linux-media mailing list: `https://linuxtv.org/lists.php <https://linuxtv.org/lists.php>`__. - Querying Capabilities ===================== @@ -75,31 +68,27 @@ like program identification codes and radio text, the flag :ref:`Writing RDS data <writing-rds-data>` and :ref:`FM Transmitter Control Reference <fm-tx-controls>`. - .. _reading-rds-data: Reading RDS data ================ RDS data can be read from the radio device with the -:ref:`read() <func-read>` function. The data is packed in groups of +:c:func:`read()` function. The data is packed in groups of three bytes. - .. _writing-rds-data: Writing RDS data ================ RDS data can be written to the radio device with the -:ref:`write() <func-write>` function. The data is packed in groups of +:c:func:`write()` function. The data is packed in groups of three bytes, as follows: - RDS datastructures ================== - .. c:type:: v4l2_rds_data .. tabularcolumns:: |p{2.5cm}|p{2.5cm}|p{12.5cm}| @@ -120,7 +109,6 @@ RDS datastructures - Block description - .. _v4l2-rds-block: .. tabularcolumns:: |p{2.9cm}|p{14.6cm}| @@ -143,7 +131,6 @@ RDS datastructures reception of this block. - .. _v4l2-rds-block-codes: .. tabularcolumns:: |p{6.4cm}|p{2.0cm}|p{1.2cm}|p{7.9cm}| diff --git a/Documentation/userspace-api/media/v4l/dev-sdr.rst b/Documentation/userspace-api/media/v4l/dev-sdr.rst index 4a80319a53c6..80b25a7e8017 100644 --- a/Documentation/userspace-api/media/v4l/dev-sdr.rst +++ b/Documentation/userspace-api/media/v4l/dev-sdr.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _sdr: diff --git a/Documentation/userspace-api/media/v4l/dev-sliced-vbi.rst b/Documentation/userspace-api/media/v4l/dev-sliced-vbi.rst index dd0b6646beb5..f0df144c9f63 100644 --- a/Documentation/userspace-api/media/v4l/dev-sliced-vbi.rst +++ b/Documentation/userspace-api/media/v4l/dev-sliced-vbi.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _sliced: @@ -34,7 +28,6 @@ however the default function here is video capturing or output. Different file descriptors must be used to pass raw and sliced VBI data simultaneously, if this is supported by the driver. - Querying Capabilities ===================== @@ -46,7 +39,6 @@ respectively, in the ``capabilities`` field of struct read/write, streaming or asynchronous :ref:`I/O methods <io>` must be supported. Sliced VBI devices may have a tuner or modulator. - Supplemental Functions ====================== @@ -56,7 +48,6 @@ capabilities, and they may support :ref:`control` ioctls. The :ref:`video standard <standard>` ioctls provide information vital to program a sliced VBI device, therefore must be supported. - .. _sliced-vbi-format-negotitation: Sliced VBI Format Negotiation @@ -103,9 +94,8 @@ at this point, it may return an ``EBUSY`` error code if the required resources are temporarily unavailable. Other resource allocation points which may return ``EBUSY`` can be the :ref:`VIDIOC_STREAMON` ioctl and the first -:ref:`read() <func-read>`, :ref:`write() <func-write>` and -:ref:`select() <func-select>` call. - +:c:func:`read()`, :c:func:`write()` and +:c:func:`select()` call. .. c:type:: v4l2_sliced_vbi_format @@ -127,7 +117,7 @@ struct v4l2_sliced_vbi_format :stub-columns: 0 :widths: 3 3 2 2 2 - * - __u32 + * - __u16 - ``service_set`` - :cspan:`2` @@ -198,7 +188,7 @@ struct v4l2_sliced_vbi_format * - __u32 - ``io_size`` - :cspan:`2` Maximum number of bytes passed by one - :ref:`read() <func-read>` or :ref:`write() <func-write>` call, + :c:func:`read()` or :c:func:`write()` call, and the buffer size in bytes for the :ref:`VIDIOC_QBUF` and :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>` ioctl. Drivers set this field @@ -281,7 +271,6 @@ Sliced VBI services \normalsize - Drivers may return an ``EINVAL`` error code when applications attempt to read or write data without prior format negotiation, after switching the video standard (which may invalidate the negotiated VBI parameters) and @@ -291,13 +280,12 @@ return an ``EBUSY`` error code when applications attempt to change the format while i/o is in progress (between a :ref:`VIDIOC_STREAMON` and :ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>` call, and after the first -:ref:`read() <func-read>` or :ref:`write() <func-write>` call). - +:c:func:`read()` or :c:func:`write()` call). Reading and writing sliced VBI data =================================== -A single :ref:`read() <func-read>` or :ref:`write() <func-write>` +A single :c:func:`read()` or :c:func:`write()` call must pass all data belonging to one video frame. That is an array of struct :c:type:`v4l2_sliced_vbi_data` structures with one or more elements and a total size not exceeding ``io_size`` bytes. Likewise @@ -305,7 +293,6 @@ in streaming I/O mode one buffer of ``io_size`` bytes must contain data of one video frame. The ``id`` of unused struct :c:type:`v4l2_sliced_vbi_data` elements must be zero. - .. c:type:: v4l2_sliced_vbi_data struct v4l2_sliced_vbi_data @@ -351,9 +338,8 @@ struct v4l2_sliced_vbi_data bytes at the end of this array are undefined, drivers and applications shall ignore them. - Packets are always passed in ascending line number order, without -duplicate line numbers. The :ref:`write() <func-write>` function and +duplicate line numbers. The :c:func:`write()` function and the :ref:`VIDIOC_QBUF` ioctl must return an ``EINVAL`` error code when applications violate this rule. They must also return an EINVAL error code when applications pass an incorrect field or line @@ -377,7 +363,6 @@ streaming (:ref:`memory mapping <mmap>` and/or :ref:`user pointer <userp>`) I/O. The latter bears the possibility of synchronizing video and VBI data by using buffer timestamps. - Sliced VBI Data in MPEG Streams =============================== @@ -412,7 +397,6 @@ data insertion is not supported by the device. The following subsections specify the format of the embedded sliced VBI data. - MPEG Stream Embedded, Sliced VBI Data Format: NONE -------------------------------------------------- @@ -424,7 +408,6 @@ nor driver shall insert "empty" embedded sliced VBI data packets in the MPEG stream when this format is set. No MPEG stream data structures are specified for this format. - MPEG Stream Embedded, Sliced VBI Data Format: IVTV -------------------------------------------------- @@ -467,7 +450,6 @@ the end with unspecified fill bytes to align the end of the payload to a with 18 lines/field with 43 bytes of data/line and a 4 byte magic number). - .. c:type:: v4l2_mpeg_vbi_fmt_ivtv struct v4l2_mpeg_vbi_fmt_ivtv @@ -530,7 +512,6 @@ Magic Constants for struct v4l2_mpeg_vbi_fmt_ivtv magic field valid and that 36 lines of sliced VBI data are present. - .. c:type:: v4l2_mpeg_vbi_itv0 .. c:type:: v4l2_mpeg_vbi_ITV0 @@ -555,7 +536,6 @@ structs v4l2_mpeg_vbi_itv0 and v4l2_mpeg_vbi_ITV0 value: - :: linemask[0] b0: line 6 first field @@ -581,7 +561,6 @@ structs v4l2_mpeg_vbi_itv0 and v4l2_mpeg_vbi_ITV0 applications. - .. _v4l2-mpeg-vbi-itv0-1: struct v4l2_mpeg_vbi_ITV0 @@ -603,7 +582,6 @@ struct v4l2_mpeg_vbi_ITV0 lines 6 through 23 of the second field. - .. c:type:: v4l2_mpeg_vbi_itv0_line struct v4l2_mpeg_vbi_itv0_line @@ -626,7 +604,6 @@ struct v4l2_mpeg_vbi_itv0_line - The sliced VBI data for the line. - .. _ITV0-Line-Identifier-Constants: Line Identifiers for struct v4l2_mpeg_vbi_itv0_line id field @@ -660,7 +637,6 @@ Line Identifiers for struct v4l2_mpeg_vbi_itv0_line id field description of the line payload. - .. [#f1] According to :ref:`ETS 300 706 <ets300706>` lines 6-22 of the first field and lines 5-22 of the second field may carry Teletext data. diff --git a/Documentation/userspace-api/media/v4l/dev-subdev.rst b/Documentation/userspace-api/media/v4l/dev-subdev.rst index 134d2fb909fa..2aa8157efae1 100644 --- a/Documentation/userspace-api/media/v4l/dev-subdev.rst +++ b/Documentation/userspace-api/media/v4l/dev-subdev.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _subdev: diff --git a/Documentation/userspace-api/media/v4l/dev-touch.rst b/Documentation/userspace-api/media/v4l/dev-touch.rst index c1ce446274f2..a71b9def5d58 100644 --- a/Documentation/userspace-api/media/v4l/dev-touch.rst +++ b/Documentation/userspace-api/media/v4l/dev-touch.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _touch: diff --git a/Documentation/userspace-api/media/v4l/devices.rst b/Documentation/userspace-api/media/v4l/devices.rst index 47ffe90753dd..8bfbad65a9d4 100644 --- a/Documentation/userspace-api/media/v4l/devices.rst +++ b/Documentation/userspace-api/media/v4l/devices.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _devices: diff --git a/Documentation/userspace-api/media/v4l/diff-v4l.rst b/Documentation/userspace-api/media/v4l/diff-v4l.rst index 37644d26c4ae..caa05fbbd396 100644 --- a/Documentation/userspace-api/media/v4l/diff-v4l.rst +++ b/Documentation/userspace-api/media/v4l/diff-v4l.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _diff-v4l: @@ -20,7 +14,6 @@ the much improved V4L2 API replaces the V4L API. The support for the old V4L calls were removed from Kernel, but the library :ref:`libv4l` supports the conversion of a V4L API system call into a V4L2 one. - Opening and Closing Devices =========================== @@ -39,7 +32,6 @@ recommend that V4L2 drivers by default register devices with the same numbers, but the system administrator can assign arbitrary minor numbers using driver module options. The major device number remains 81. - .. _v4l-dev: .. flat-table:: V4L Device Types, Names and Numbers @@ -60,14 +52,12 @@ using driver module options. The major device number remains 81. - ``/dev/vbi``, ``/dev/vbi0`` to ``/dev/vbi31`` - 224-255 - V4L prohibits (or used to prohibit) multiple opens of a device file. V4L2 drivers *may* support multiple opens, see :ref:`open` for details and consequences. V4L drivers respond to V4L2 ioctls with an ``EINVAL`` error code. - Querying Capabilities ===================== @@ -158,7 +148,6 @@ introduction. - ``-`` - See above. - The ``audios`` field was replaced by ``capabilities`` flag ``V4L2_CAP_AUDIO``, indicating *if* the device has any audio inputs or outputs. To determine their number applications can enumerate audio @@ -171,7 +160,6 @@ were removed. Calling the :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` or dimensions returns the closest size possible, taking into account the current video standard, cropping and scaling limitations. - Video Sources ============= @@ -187,7 +175,6 @@ The ``channel`` field counting inputs was renamed to ``index``, the video input types were renamed as follows: - .. flat-table:: :header-rows: 1 :stub-columns: 0 @@ -199,7 +186,6 @@ video input types were renamed as follows: * - ``VIDEO_TYPE_CAMERA`` - ``V4L2_INPUT_TYPE_CAMERA`` - Unlike the ``tuners`` field expressing the number of tuners of this input, V4L2 assumes each video input is connected to at most one tuner. However a tuner can have more than one input, i. e. RF connectors, and a @@ -223,7 +209,6 @@ addition together with the ``norm`` field and has been removed in the meantime. V4L2 has a similar, albeit more comprehensive approach to video standards, see :ref:`standard` for more information. - Tuning ====== @@ -267,7 +252,6 @@ frequency where renamed to to a struct :c:type:`v4l2_frequency` instead of an unsigned long integer. - .. _v4l-image-properties: Image Properties @@ -281,7 +265,6 @@ replaced by V4L2 controls accessible with the :ref:`VIDIOC_S_CTRL <VIDIOC_G_CTRL>` ioctls: - .. flat-table:: :header-rows: 1 :stub-columns: 0 @@ -299,7 +282,6 @@ replaced by V4L2 controls accessible with the * - ``whiteness`` - ``V4L2_CID_WHITENESS`` - The V4L picture controls are assumed to range from 0 to 65535 with no particular reset value. The V4L2 API permits arbitrary limits and defaults which can be queried with the @@ -313,7 +295,6 @@ of the image depth and others need not know. The ``palette`` field moved into the struct :c:type:`v4l2_pix_format`: - .. flat-table:: :header-rows: 1 :stub-columns: 0 @@ -353,11 +334,9 @@ into the struct :c:type:`v4l2_pix_format`: * - ``VIDEO_PALETTE_YUV410P`` - :ref:`V4L2_PIX_FMT_YVU410 <V4L2-PIX-FMT-YVU410>` - V4L2 image formats are defined in :ref:`pixfmt`. The image format can be selected with the :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctl. - Audio ===== @@ -391,7 +370,6 @@ The following fields where replaced by V4L2 controls accessible with the :ref:`VIDIOC_S_CTRL <VIDIOC_G_CTRL>` ioctls: - .. flat-table:: :header-rows: 1 :stub-columns: 0 @@ -407,7 +385,6 @@ The following fields where replaced by V4L2 controls accessible with the * - ``balance`` - ``V4L2_CID_AUDIO_BALANCE`` - To determine which of these controls are supported by a driver V4L provides the ``flags`` ``VIDEO_AUDIO_VOLUME``, ``VIDEO_AUDIO_BASS``, ``VIDEO_AUDIO_TREBLE`` and ``VIDEO_AUDIO_BALANCE``. In the V4L2 API the @@ -423,7 +400,6 @@ V4L2 API permits arbitrary limits and defaults which can be queried with the :ref:`VIDIOC_QUERYCTRL` ioctl. For general information about controls see :ref:`control`. - Frame Buffer Overlay ==================== @@ -470,7 +446,6 @@ size is determined by ``w.width`` and ``w.height``. The ``VIDIOCCAPTURE`` ioctl to enable or disable overlay was renamed to :ref:`VIDIOC_OVERLAY`. - Cropping ======== @@ -497,21 +472,19 @@ struct :c:type:`v4l2_window`. These structures are used to select a capture or overlay format with the :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctl. - Reading Images, Memory Mapping ============================== - Capturing using the read method ------------------------------- There is no essential difference between reading images from a V4L or -V4L2 device using the :ref:`read() <func-read>` function, however V4L2 +V4L2 device using the :c:func:`read()` function, however V4L2 drivers are not required to support this I/O method. Applications can determine if the function is available with the :ref:`VIDIOC_QUERYCAP` ioctl. All V4L2 devices exchanging data with applications must support the -:ref:`select() <func-select>` and :ref:`poll() <func-poll>` +:c:func:`select()` and :c:func:`poll()` functions. To select an image format and size, V4L provides the ``VIDIOCSPICT`` and @@ -524,7 +497,6 @@ negotiation ioctls :ref:`VIDIOC_G_FMT <VIDIOC_G_FMT>` and For more information about the V4L2 read interface see :ref:`rw`. - Capturing using memory mapping ------------------------------ @@ -535,7 +507,6 @@ read method. V4L2 supports memory mapping as well, with a few differences. - .. flat-table:: :header-rows: 1 :stub-columns: 0 @@ -557,7 +528,7 @@ differences. ``VIDIOCGMBUF`` ioctl is available to query the number of buffers, the offset of each buffer from the start of the virtual file, and the overall amount of memory used, which can be used as arguments - for the :ref:`mmap() <func-mmap>` function. + for the :c:func:`mmap()` function. - Buffers are individually mapped. The offset and size of each buffer can be determined with the :ref:`VIDIOC_QUERYBUF` ioctl. @@ -575,7 +546,7 @@ differences. the incoming queue. Filled buffers are dequeued from the outgoing queue with the :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>` ioctl. To wait until filled buffers become available this function, - :ref:`select() <func-select>` or :ref:`poll() <func-poll>` can + :c:func:`select()` or :c:func:`poll()` can be used. The :ref:`VIDIOC_STREAMON` ioctl must be called once after enqueuing one or more buffers to start capturing. Its counterpart @@ -584,11 +555,9 @@ differences. signal status, if known, with the :ref:`VIDIOC_ENUMINPUT` ioctl. - For a more in-depth discussion of memory mapping and examples, see :ref:`mmap`. - Reading Raw VBI Data ==================== @@ -599,7 +568,6 @@ the V4L VBI interface. Reading from the device yields a raw VBI image with the following parameters: - .. flat-table:: :header-rows: 1 :stub-columns: 0 @@ -623,7 +591,6 @@ with the following parameters: * - flags - 0 - Undocumented in the V4L specification, in Linux 2.3 the ``VIDIOCGVBIFMT`` and ``VIDIOCSVBIFMT`` ioctls using struct ``vbi_format`` were added to determine the VBI image @@ -637,11 +604,10 @@ remaining fields are probably equivalent to struct Apparently only the Zoran (ZR 36120) driver implements these ioctls. The semantics differ from those specified for V4L2 in two ways. The -parameters are reset on :ref:`open() <func-open>` and +parameters are reset on :c:func:`open()` and ``VIDIOCSVBIFMT`` always returns an ``EINVAL`` error code if the parameters are invalid. - Miscellaneous ============= diff --git a/Documentation/userspace-api/media/v4l/dmabuf.rst b/Documentation/userspace-api/media/v4l/dmabuf.rst index 342421ff9497..50fba11c2477 100644 --- a/Documentation/userspace-api/media/v4l/dmabuf.rst +++ b/Documentation/userspace-api/media/v4l/dmabuf.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _dmabuf: @@ -43,7 +37,6 @@ are passed in struct :c:type:`v4l2_buffer` (or in struct driver must be switched into DMABUF I/O mode by calling the :ref:`VIDIOC_REQBUFS <VIDIOC_REQBUFS>` with the desired buffer type. - Example: Initiating streaming I/O with DMABUF file descriptors ============================================================== @@ -142,10 +135,10 @@ buffers it must wait until an empty buffer can be dequeued and reused. Two methods exist to suspend execution of the application until one or more buffers can be dequeued. By default :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>` blocks when no buffer is in the outgoing queue. When the -``O_NONBLOCK`` flag was given to the :ref:`open() <func-open>` function, +``O_NONBLOCK`` flag was given to the :c:func:`open()` function, :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>` returns immediately with an ``EAGAIN`` error code when no buffer is available. The -:ref:`select() <func-select>` and :ref:`poll() <func-poll>` +:c:func:`select()` and :c:func:`poll()` functions are always available. To start and stop capturing or displaying applications call the @@ -165,5 +158,5 @@ Drivers implementing DMABUF importing I/O must support the :ref:`VIDIOC_REQBUFS <VIDIOC_REQBUFS>`, :ref:`VIDIOC_QBUF <VIDIOC_QBUF>`, :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>`, :ref:`VIDIOC_STREAMON <VIDIOC_STREAMON>` and :ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>` ioctls, -and the :ref:`select() <func-select>` and :ref:`poll() <func-poll>` +and the :c:func:`select()` and :c:func:`poll()` functions. diff --git a/Documentation/userspace-api/media/v4l/dv-timings.rst b/Documentation/userspace-api/media/v4l/dv-timings.rst index e216aa9edef0..e17f056b129f 100644 --- a/Documentation/userspace-api/media/v4l/dv-timings.rst +++ b/Documentation/userspace-api/media/v4l/dv-timings.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _dv-timings: diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-camera.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-camera.rst index d9a117f75c9c..c05a2d2c675d 100644 --- a/Documentation/userspace-api/media/v4l/ext-ctrls-camera.rst +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-camera.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _camera-controls: diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst index d0d506a444b1..ce728c757eaf 100644 --- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _mpeg-controls: @@ -581,6 +574,8 @@ enum v4l2_mpeg_video_bitrate_mode - - Variable bitrate * - ``V4L2_MPEG_VIDEO_BITRATE_MODE_CBR`` - Constant bitrate + * - ``V4L2_MPEG_VIDEO_BITRATE_MODE_CQ`` + - Constant quality @@ -592,6 +587,48 @@ enum v4l2_mpeg_video_bitrate_mode - the average video bitrate. It is ignored if the video bitrate mode is set to constant bitrate. +``V4L2_CID_MPEG_VIDEO_CONSTANT_QUALITY (integer)`` + Constant quality level control. This control is applicable when + ``V4L2_CID_MPEG_VIDEO_BITRATE_MODE`` value is + ``V4L2_MPEG_VIDEO_BITRATE_MODE_CQ``. Valid range is 1 to 100 + where 1 indicates lowest quality and 100 indicates highest quality. + Encoder will decide the appropriate quantization parameter and + bitrate to produce requested frame quality. + + +``V4L2_CID_MPEG_VIDEO_FRAME_SKIP_MODE (enum)`` + +enum v4l2_mpeg_video_frame_skip_mode - + Indicates in what conditions the encoder should skip frames. If + encoding a frame would cause the encoded stream to be larger then a + chosen data limit then the frame will be skipped. Possible values + are: + + +.. tabularcolumns:: |p{9.2cm}|p{8.3cm}| + +.. raw:: latex + + \small + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + + * - ``V4L2_MPEG_FRAME_SKIP_MODE_DISABLED`` + - Frame skip mode is disabled. + * - ``V4L2_MPEG_FRAME_SKIP_MODE_LEVEL_LIMIT`` + - Frame skip mode enabled and buffer limit is set by the chosen + level and is defined by the standard. + * - ``V4L2_MPEG_FRAME_SKIP_MODE_BUF_LIMIT`` + - Frame skip mode enabled and buffer limit is set by the + :ref:`VBV (MPEG1/2/4) <v4l2-mpeg-video-vbv-size>` or + :ref:`CPB (H264) buffer size <v4l2-mpeg-video-h264-cpb-size>` control. + +.. raw:: latex + + \normalsize + ``V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION (integer)`` For every captured frame, skip this many subsequent frames (default 0). @@ -1163,6 +1200,8 @@ enum v4l2_mpeg_video_h264_entropy_mode - Quantization parameter for an B frame for MPEG4. Valid range: from 1 to 31. +.. _v4l2-mpeg-video-vbv-size: + ``V4L2_CID_MPEG_VIDEO_VBV_SIZE (integer)`` The Video Buffer Verifier size in kilobytes, it is used as a limitation of frame skip. The VBV is defined in the standard as a @@ -1200,6 +1239,8 @@ enum v4l2_mpeg_video_h264_entropy_mode - Force a key frame for the next queued buffer. Applicable to encoders. This is a general, codec-agnostic keyframe control. +.. _v4l2-mpeg-video-h264-cpb-size: + ``V4L2_CID_MPEG_VIDEO_H264_CPB_SIZE (integer)`` The Coded Picture Buffer size in kilobytes, it is used as a limitation of frame skip. The CPB is defined in the H264 standard as @@ -1695,9 +1736,10 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type - * - ``V4L2_H264_PPS_FLAG_TRANSFORM_8X8_MODE`` - 0x00000040 - - * - ``V4L2_H264_PPS_FLAG_PIC_SCALING_MATRIX_PRESENT`` + * - ``V4L2_H264_PPS_FLAG_SCALING_MATRIX_PRESENT`` - 0x00000080 - - + - Indicates that ``V4L2_CID_MPEG_VIDEO_H264_SCALING_MATRIX`` + must be used for this picture. ``V4L2_CID_MPEG_VIDEO_H264_SCALING_MATRIX (struct)`` Specifies the scaling matrix (as extracted from the bitstream) for @@ -1725,12 +1767,14 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type - - ``scaling_list_4x4[6][16]`` - Scaling matrix after applying the inverse scanning process. Expected list order is Intra Y, Intra Cb, Intra Cr, Inter Y, - Inter Cb, Inter Cr. + Inter Cb, Inter Cr. The values on each scaling list are + expected in raster scan order. * - __u8 - ``scaling_list_8x8[6][64]`` - Scaling matrix after applying the inverse scanning process. Expected list order is Intra Y, Inter Y, Intra Cb, Inter Cb, - Intra Cr, Inter Cr. + Intra Cr, Inter Cr. The values on each scaling list are + expected in raster scan order. ``V4L2_CID_MPEG_VIDEO_H264_SLICE_PARAMS (struct)`` Specifies the slice parameters (as extracted from the bitstream) @@ -1746,9 +1790,6 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type - This compound control is not yet part of the public kernel API and it is expected to change. - This structure is expected to be passed as an array, with one - entry for each slice included in the bitstream buffer. - .. c:type:: v4l2_ctrl_h264_slice_params .. cssclass:: longtable @@ -1759,61 +1800,20 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type - :widths: 1 1 2 * - __u32 - - ``size`` - - - * - __u32 - - ``start_byte_offset`` - Offset (in bytes) from the beginning of the OUTPUT buffer to the start - of the slice. If the slice starts with a start code, then this is the - offset to such start code. When operating in slice-based decoding mode - (see :c:type:`v4l2_mpeg_video_h264_decode_mode`), this field should - be set to 0. When operating in frame-based decoding mode, this field - should be 0 for the first slice. - * - __u32 - ``header_bit_size`` - - - * - __u16 + - Offset in bits to slice_data() from the beginning of this slice. + * - __u32 - ``first_mb_in_slice`` - * - __u8 - ``slice_type`` - * - __u8 - - ``pic_parameter_set_id`` - - - * - __u8 - ``colour_plane_id`` - * - __u8 - ``redundant_pic_cnt`` - - * - __u16 - - ``frame_num`` - - - * - __u16 - - ``idr_pic_id`` - - - * - __u16 - - ``pic_order_cnt_lsb`` - - - * - __s32 - - ``delta_pic_order_cnt_bottom`` - - - * - __s32 - - ``delta_pic_order_cnt0`` - - - * - __s32 - - ``delta_pic_order_cnt1`` - - - * - struct :c:type:`v4l2_h264_pred_weight_table` - - ``pred_weight_table`` - - - * - __u32 - - ``dec_ref_pic_marking_bit_size`` - - Size in bits of the dec_ref_pic_marking() syntax element. - * - __u32 - - ``pic_order_cnt_bit_size`` - - * - __u8 - ``cabac_init_idc`` - @@ -1840,13 +1840,13 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type - - ``num_ref_idx_l1_active_minus1`` - If num_ref_idx_active_override_flag is not set, this field must be set to the value of num_ref_idx_l1_default_active_minus1. - * - __u32 - - ``slice_group_change_cycle`` - - * - __u8 + - ``reserved`` + - Applications and drivers must set this to zero. + * - struct :c:type:`v4l2_h264_reference` - ``ref_pic_list0[32]`` - Reference picture list after applying the per-slice modifications - * - __u8 + * - struct :c:type:`v4l2_h264_reference` - ``ref_pic_list1[32]`` - Reference picture list after applying the per-slice modifications * - __u32 @@ -1864,31 +1864,30 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type - :stub-columns: 0 :widths: 1 1 2 - * - ``V4L2_H264_SLICE_FLAG_FIELD_PIC`` - - 0x00000001 - - - * - ``V4L2_H264_SLICE_FLAG_BOTTOM_FIELD`` - - 0x00000002 - - * - ``V4L2_H264_SLICE_FLAG_DIRECT_SPATIAL_MV_PRED`` - - 0x00000004 + - 0x00000001 - * - ``V4L2_H264_SLICE_FLAG_SP_FOR_SWITCH`` - - 0x00000008 + - 0x00000002 - -``Prediction Weight Table`` +``V4L2_CID_MPEG_VIDEO_H264_PRED_WEIGHTS (struct)`` + Prediction weight table defined according to :ref:`h264`, + section 7.4.3.2 "Prediction Weight Table Semantics". + The prediction weight table must be passed by applications + under the conditions explained in section 7.3.3 "Slice header + syntax". - The bitstream parameters are defined according to :ref:`h264`, - section 7.4.3.2 "Prediction Weight Table Semantics". For further - documentation, refer to the above specification, unless there is - an explicit comment stating otherwise. + .. note:: + + This compound control is not yet part of the public kernel API and + it is expected to change. -.. c:type:: v4l2_h264_pred_weight_table +.. c:type:: v4l2_ctrl_h264_pred_weights .. cssclass:: longtable -.. flat-table:: struct v4l2_h264_pred_weight_table +.. flat-table:: struct v4l2_ctrl_h264_pred_weights :header-rows: 0 :stub-columns: 0 :widths: 1 1 2 @@ -1926,6 +1925,46 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type - - ``chroma_offset[32][2]`` - +``Picture Reference`` + +.. c:type:: v4l2_h264_reference + +.. cssclass:: longtable + +.. flat-table:: struct v4l2_h264_reference + :header-rows: 0 + :stub-columns: 0 + :widths: 1 1 2 + + * - __u8 + - ``fields`` + - Specifies how the picture is referenced. See :ref:`Reference Fields <h264_ref_fields>` + * - __u8 + - ``index`` + - Index into the :c:type:`v4l2_ctrl_h264_decode_params`.dpb array. + +.. _h264_ref_fields: + +``Reference Fields`` + +.. cssclass:: longtable + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + :widths: 1 1 2 + + * - ``V4L2_H264_TOP_FIELD_REF`` + - 0x1 + - The top field in field pair is used for short-term reference. + * - ``V4L2_H264_BOTTOM_FIELD_REF`` + - 0x2 + - The bottom field in field pair is used for short-term reference. + * - ``V4L2_H264_FRAME_REF`` + - 0x3 + - The frame (or the top/bottom fields, if it's a field pair) + is used for short-term reference. + ``V4L2_CID_MPEG_VIDEO_H264_DECODE_PARAMS (struct)`` Specifies the decode parameters (as extracted from the bitstream) for the associated H264 slice data. This includes the necessary @@ -1953,20 +1992,46 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type - - ``dpb[16]`` - * - __u16 - - ``num_slices`` - - Number of slices needed to decode the current frame/field. When - operating in slice-based decoding mode (see - :c:type:`v4l2_mpeg_video_h264_decode_mode`), this field - should always be set to one. - * - __u16 - ``nal_ref_idc`` - NAL reference ID value coming from the NAL Unit header + * - __u16 + - ``frame_num`` + - * - __s32 - ``top_field_order_cnt`` - Picture Order Count for the coded top field * - __s32 - ``bottom_field_order_cnt`` - Picture Order Count for the coded bottom field + * - __u16 + - ``idr_pic_id`` + - + * - __u16 + - ``pic_order_cnt_lsb`` + - + * - __s32 + - ``delta_pic_order_cnt_bottom`` + - + * - __s32 + - ``delta_pic_order_cnt0`` + - + * - __s32 + - ``delta_pic_order_cnt1`` + - + * - __u32 + - ``dec_ref_pic_marking_bit_size`` + - Size in bits of the dec_ref_pic_marking() syntax element. + * - __u32 + - ``pic_order_cnt_bit_size`` + - Combined size in bits of the picture order count related syntax + elements: pic_order_cnt_lsb, delta_pic_order_cnt_bottom, + delta_pic_order_cnt0, and delta_pic_order_cnt1. + * - __u32 + - ``slice_group_change_cycle`` + - + * - __u32 + - ``reserved`` + - Applications and drivers must set this to zero. * - __u32 - ``flags`` - See :ref:`Decode Parameters Flags <h264_decode_params_flags>` @@ -1985,6 +2050,12 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type - * - ``V4L2_H264_DECODE_PARAM_FLAG_IDR_PIC`` - 0x00000001 - That picture is an IDR picture + * - ``V4L2_H264_DECODE_PARAM_FLAG_FIELD_PIC`` + - 0x00000002 + - + * - ``V4L2_H264_DECODE_PARAM_FLAG_BOTTOM_FIELD`` + - 0x00000004 + - .. c:type:: v4l2_h264_dpb_entry @@ -2002,12 +2073,18 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type - ``timestamp`` field in struct :c:type:`v4l2_buffer`. Use the :c:func:`v4l2_timeval_to_ns()` function to convert the struct :c:type:`timeval` in struct :c:type:`v4l2_buffer` to a __u64. - * - __u16 - - ``frame_num`` + * - __u32 + - ``pic_num`` - * - __u16 - - ``pic_num`` + - ``frame_num`` - + * - __u8 + - ``fields`` + - Specifies how the DPB entry is referenced. See :ref:`Reference Fields <h264_ref_fields>` + * - __u8 + - ``reserved[5]`` + - Applications and drivers must set this to zero. * - __s32 - ``top_field_order_cnt`` - @@ -2031,29 +2108,16 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type - * - ``V4L2_H264_DPB_ENTRY_FLAG_VALID`` - 0x00000001 - - The DPB entry is valid and should be considered + - The DPB entry is valid (non-empty) and should be considered. * - ``V4L2_H264_DPB_ENTRY_FLAG_ACTIVE`` - 0x00000002 - - The DPB entry is currently being used as a reference frame + - The DPB entry is used for reference. * - ``V4L2_H264_DPB_ENTRY_FLAG_LONG_TERM`` - 0x00000004 - - The DPB entry is a long term reference frame + - The DPB entry is used for long-term reference. * - ``V4L2_H264_DPB_ENTRY_FLAG_FIELD`` - 0x00000008 - - The DPB entry is a field reference, which means only one of the field - will be used when decoding the new frame/field. When not set the DPB - entry is a frame reference (both fields will be used). Note that this - flag does not say anything about the number of fields contained in the - reference frame, it just describes the one used to decode the new - field/frame - * - ``V4L2_H264_DPB_ENTRY_FLAG_BOTTOM_FIELD`` - - 0x00000010 - - The DPB entry is a bottom field reference (only the bottom field of the - reference frame is needed to decode the new frame/field). Only valid if - V4L2_H264_DPB_ENTRY_FLAG_FIELD is set. When - V4L2_H264_DPB_ENTRY_FLAG_FIELD is set but - V4L2_H264_DPB_ENTRY_FLAG_BOTTOM_FIELD is not, that means the - DPB entry is a top field reference + - The DPB entry is a single field or a complementary field pair. ``V4L2_CID_MPEG_VIDEO_H264_DECODE_MODE (enum)`` Specifies the decoding mode to use. Currently exposes slice-based and @@ -2082,22 +2146,20 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type - * - ``V4L2_MPEG_VIDEO_H264_DECODE_MODE_SLICE_BASED`` - 0 - Decoding is done at the slice granularity. - In this mode, ``num_slices`` field in struct - :c:type:`v4l2_ctrl_h264_decode_params` should be set to 1, - and ``start_byte_offset`` in struct - :c:type:`v4l2_ctrl_h264_slice_params` should be set to 0. The OUTPUT buffer must contain a single slice. + When this mode is selected, the ``V4L2_CID_MPEG_VIDEO_H264_SLICE_PARAMS`` + control shall be set. When multiple slices compose a frame, + use of ``V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF`` flag + is required. * - ``V4L2_MPEG_VIDEO_H264_DECODE_MODE_FRAME_BASED`` - 1 - - Decoding is done at the frame granularity. - In this mode, ``num_slices`` field in struct - :c:type:`v4l2_ctrl_h264_decode_params` should be set to the number - of slices in the frame, and ``start_byte_offset`` in struct - :c:type:`v4l2_ctrl_h264_slice_params` should be set accordingly - for each slice. For the first slice, ``start_byte_offset`` should - be zero. + - Decoding is done at the frame granularity, The OUTPUT buffer must contain all slices needed to decode the frame. The OUTPUT buffer must also contain both fields. + This mode will be supported by devices that + parse the slice(s) header(s) in hardware. When this mode is + selected, the ``V4L2_CID_MPEG_VIDEO_H264_SLICE_PARAMS`` + control shall not be set. ``V4L2_CID_MPEG_VIDEO_H264_START_CODE (enum)`` Specifies the H264 slice start code expected for each slice. @@ -2773,6 +2835,11 @@ MFC 5.1 Control IDs ``V4L2_CID_MPEG_MFC51_VIDEO_FRAME_SKIP_MODE`` (enum) + .. note:: + + This control is deprecated. Use the standard + ``V4L2_CID_MPEG_VIDEO_FRAME_SKIP_MODE`` control instead. + enum v4l2_mpeg_mfc51_video_frame_skip_mode - Indicates in what conditions the encoder should skip frames. If encoding a frame would cause the encoded stream to be larger then a @@ -3316,6 +3383,49 @@ enum v4l2_mpeg_video_vp9_profile - * - ``V4L2_MPEG_VIDEO_VP9_PROFILE_3`` - Profile 3 +.. _v4l2-mpeg-video-vp9-level: + +``V4L2_CID_MPEG_VIDEO_VP9_LEVEL (enum)`` + +enum v4l2_mpeg_video_vp9_level - + This control allows selecting the level for VP9 encoder. + This is also used to enumerate supported levels by VP9 encoder or decoder. + More information can be found at + `webmproject <https://www.webmproject.org/vp9/levels/>`__. Possible values are: + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + + * - ``V4L2_MPEG_VIDEO_VP9_LEVEL_1_0`` + - Level 1 + * - ``V4L2_MPEG_VIDEO_VP9_LEVEL_1_1`` + - Level 1.1 + * - ``V4L2_MPEG_VIDEO_VP9_LEVEL_2_0`` + - Level 2 + * - ``V4L2_MPEG_VIDEO_VP9_LEVEL_2_1`` + - Level 2.1 + * - ``V4L2_MPEG_VIDEO_VP9_LEVEL_3_0`` + - Level 3 + * - ``V4L2_MPEG_VIDEO_VP9_LEVEL_3_1`` + - Level 3.1 + * - ``V4L2_MPEG_VIDEO_VP9_LEVEL_4_0`` + - Level 4 + * - ``V4L2_MPEG_VIDEO_VP9_LEVEL_4_1`` + - Level 4.1 + * - ``V4L2_MPEG_VIDEO_VP9_LEVEL_5_0`` + - Level 5 + * - ``V4L2_MPEG_VIDEO_VP9_LEVEL_5_1`` + - Level 5.1 + * - ``V4L2_MPEG_VIDEO_VP9_LEVEL_5_2`` + - Level 5.2 + * - ``V4L2_MPEG_VIDEO_VP9_LEVEL_6_0`` + - Level 6 + * - ``V4L2_MPEG_VIDEO_VP9_LEVEL_6_1`` + - Level 6.1 + * - ``V4L2_MPEG_VIDEO_VP9_LEVEL_6_2`` + - Level 6.2 + High Efficiency Video Coding (HEVC/H.265) Control Reference =========================================================== diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-detect.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-detect.rst index 77a4992f26bd..312c4fa94dc3 100644 --- a/Documentation/userspace-api/media/v4l/ext-ctrls-detect.rst +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-detect.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _detect-controls: diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-dv.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-dv.rst index c572b65dc772..a6f696bf89dd 100644 --- a/Documentation/userspace-api/media/v4l/ext-ctrls-dv.rst +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-dv.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _dv-controls: diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-flash.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-flash.rst index 5053a380f7de..ad4b878cd034 100644 --- a/Documentation/userspace-api/media/v4l/ext-ctrls-flash.rst +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-flash.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _flash-controls: diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-fm-rx.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-fm-rx.rst index 69197bbe23dd..b6cfc0e823d2 100644 --- a/Documentation/userspace-api/media/v4l/ext-ctrls-fm-rx.rst +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-fm-rx.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _fm-rx-controls: diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-fm-tx.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-fm-tx.rst index c13ec0a6af3a..04c997c9a4c3 100644 --- a/Documentation/userspace-api/media/v4l/ext-ctrls-fm-tx.rst +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-fm-tx.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _fm-tx-controls: diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-image-process.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-image-process.rst index bb9d484c25e4..87698c15c027 100644 --- a/Documentation/userspace-api/media/v4l/ext-ctrls-image-process.rst +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-image-process.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _image-process-controls: diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-image-source.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-image-source.rst index 7b75158aca4d..9457dc340c31 100644 --- a/Documentation/userspace-api/media/v4l/ext-ctrls-image-source.rst +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-image-source.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _image-source-controls: diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-jpeg.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-jpeg.rst index 5ea69978f3ea..e07a2dbcd65d 100644 --- a/Documentation/userspace-api/media/v4l/ext-ctrls-jpeg.rst +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-jpeg.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _jpeg-controls: diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-rf-tuner.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-rf-tuner.rst index 5277138fce67..8a6f9f0373ff 100644 --- a/Documentation/userspace-api/media/v4l/ext-ctrls-rf-tuner.rst +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-rf-tuner.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _rf-tuner-controls: diff --git a/Documentation/userspace-api/media/v4l/extended-controls.rst b/Documentation/userspace-api/media/v4l/extended-controls.rst index 9aa352ac5ea4..70301538d222 100644 --- a/Documentation/userspace-api/media/v4l/extended-controls.rst +++ b/Documentation/userspace-api/media/v4l/extended-controls.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _extended-controls: diff --git a/Documentation/userspace-api/media/v4l/field-order.rst b/Documentation/userspace-api/media/v4l/field-order.rst index 04e9a6932dc5..54548ea4308c 100644 --- a/Documentation/userspace-api/media/v4l/field-order.rst +++ b/Documentation/userspace-api/media/v4l/field-order.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _field-order: diff --git a/Documentation/userspace-api/media/v4l/fieldseq_bt.svg b/Documentation/userspace-api/media/v4l/fieldseq_bt.svg index b663f6fcb70b..91ac2813b454 100644 --- a/Documentation/userspace-api/media/v4l/fieldseq_bt.svg +++ b/Documentation/userspace-api/media/v4l/fieldseq_bt.svg @@ -1,14 +1,5 @@ <?xml version="1.0" encoding="UTF-8" standalone="no"?> -<!-- - Permission is granted to copy, distribute and/or modify this - document under the terms of the GNU Free Documentation License, - Version 1.1 or any later version published by the Free Software - Foundation, with no Invariant Sections, no Front-Cover Texts - and no Back-Cover Texts. A copy of the license is included at - Documentation/userspace-api/media/fdl-appendix.rst. - - TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections ---> +<!-- SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later --> <svg xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:cc="http://creativecommons.org/ns#" diff --git a/Documentation/userspace-api/media/v4l/fieldseq_tb.svg b/Documentation/userspace-api/media/v4l/fieldseq_tb.svg index f8b440a1cb60..7b4f8fb33757 100644 --- a/Documentation/userspace-api/media/v4l/fieldseq_tb.svg +++ b/Documentation/userspace-api/media/v4l/fieldseq_tb.svg @@ -1,14 +1,5 @@ <?xml version="1.0" encoding="UTF-8" standalone="no"?> -<!-- - Permission is granted to copy, distribute and/or modify this - document under the terms of the GNU Free Documentation License, - Version 1.1 or any later version published by the Free Software - Foundation, with no Invariant Sections, no Front-Cover Texts - and no Back-Cover Texts. A copy of the license is included at - Documentation/userspace-api/media/fdl-appendix.rst. - - TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections ---> +<!-- SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later --> <svg xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:cc="http://creativecommons.org/ns#" diff --git a/Documentation/userspace-api/media/v4l/format.rst b/Documentation/userspace-api/media/v4l/format.rst index e47fc0505727..35bbb2fea46e 100644 --- a/Documentation/userspace-api/media/v4l/format.rst +++ b/Documentation/userspace-api/media/v4l/format.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _format: @@ -13,7 +7,6 @@ Data Formats ************ - Data Format Negotiation ======================= @@ -60,8 +53,8 @@ image size. When applications omit the :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctl its locking side effects are implied by the next step, the selection of an I/O method with the :ref:`VIDIOC_REQBUFS` ioctl or implicit -with the first :ref:`read() <func-read>` or -:ref:`write() <func-write>` call. +with the first :c:func:`read()` or +:c:func:`write()` call. Generally only one logical stream can be assigned to a file descriptor, the exception being drivers permitting simultaneous video capturing and @@ -74,7 +67,6 @@ All drivers exchanging data with applications must support the :ref:`VIDIOC_G_FMT <VIDIOC_G_FMT>` and :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctl. Implementation of the :ref:`VIDIOC_TRY_FMT <VIDIOC_G_FMT>` is highly recommended but optional. - Image Format Enumeration ======================== diff --git a/Documentation/userspace-api/media/v4l/func-close.rst b/Documentation/userspace-api/media/v4l/func-close.rst index 37a64dae56b0..dba3263fd1b9 100644 --- a/Documentation/userspace-api/media/v4l/func-close.rst +++ b/Documentation/userspace-api/media/v4l/func-close.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _func-close: @@ -18,7 +12,6 @@ Name v4l2-close - Close a V4L2 device - Synopsis ======== @@ -26,16 +19,13 @@ Synopsis #include <unistd.h> - .. c:function:: int close( int fd ) - :name: v4l2-close Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. - + File descriptor returned by :c:func:`open()`. Description =========== @@ -45,7 +35,6 @@ associated with the file descriptor are freed. However data format parameters, current input or output, control values or other properties remain unchanged. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/func-ioctl.rst b/Documentation/userspace-api/media/v4l/func-ioctl.rst index 4e69f303636b..f3b005094334 100644 --- a/Documentation/userspace-api/media/v4l/func-ioctl.rst +++ b/Documentation/userspace-api/media/v4l/func-ioctl.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _func-ioctl: @@ -18,7 +12,6 @@ Name v4l2-ioctl - Program a V4L2 device - Synopsis ======== @@ -26,15 +19,13 @@ Synopsis #include <sys/ioctl.h> - -.. c:function:: int ioctl( int fd, int request, void *argp ) - :name: v4l2-ioctl +``int ioctl(int fd, int request, void *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``request`` V4L2 ioctl request code as defined in the ``videodev2.h`` header @@ -43,7 +34,6 @@ Arguments ``argp`` Pointer to a function parameter, usually a structure. - Description =========== @@ -57,7 +47,6 @@ include the version in the kernel sources on the system they compile on. All V4L2 ioctl requests, their respective function and parameters are specified in :ref:`user-func`. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/func-mmap.rst b/Documentation/userspace-api/media/v4l/func-mmap.rst index f9c77bdce434..e3e5e64ebe7e 100644 --- a/Documentation/userspace-api/media/v4l/func-mmap.rst +++ b/Documentation/userspace-api/media/v4l/func-mmap.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _func-mmap: @@ -18,7 +12,6 @@ Name v4l2-mmap - Map device memory into application address space - Synopsis ======== @@ -27,9 +20,7 @@ Synopsis #include <unistd.h> #include <sys/mman.h> - .. c:function:: void *mmap( void *start, size_t length, int prot, int flags, int fd, off_t offset ) - :name: v4l2-mmap Arguments ========= @@ -61,7 +52,7 @@ Arguments #. The Linux ``videobuf`` kernel module, which is used by some drivers supports only ``PROT_READ`` | ``PROT_WRITE``. When the driver does not support the desired protection, the - :ref:`mmap() <func-mmap>` function fails. + :c:func:`mmap()` function fails. #. Device memory accesses (e. g. the memory on a graphics card with video capturing hardware) may incur a performance penalty @@ -77,7 +68,7 @@ Arguments ``MAP_FIXED`` requests that the driver selects no other address than the one specified. If the specified address cannot be used, - :ref:`mmap() <func-mmap>` will fail. If ``MAP_FIXED`` is specified, + :c:func:`mmap()` will fail. If ``MAP_FIXED`` is specified, ``start`` must be a multiple of the pagesize. Use of this option is discouraged. @@ -94,7 +85,7 @@ Arguments flags. ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``offset`` Offset of the buffer in device memory. This must be the same value @@ -104,11 +95,10 @@ Arguments in the struct :c:type:`v4l2_plane` ``m`` union ``mem_offset`` field for the multi-planar API. - Description =========== -The :ref:`mmap() <func-mmap>` function asks to map ``length`` bytes starting at +The :c:func:`mmap()` function asks to map ``length`` bytes starting at ``offset`` in the memory of the device specified by ``fd`` into the application address space, preferably at address ``start``. This latter address is a hint only, and is usually specified as 0. @@ -118,13 +108,12 @@ Suitable length and offset parameters are queried with the allocated with the :ref:`VIDIOC_REQBUFS` ioctl before they can be queried. -To unmap buffers the :ref:`munmap() <func-munmap>` function is used. - +To unmap buffers the :c:func:`munmap()` function is used. Return Value ============ -On success :ref:`mmap() <func-mmap>` returns a pointer to the mapped buffer. On +On success :c:func:`mmap()` returns a pointer to the mapped buffer. On error ``MAP_FAILED`` (-1) is returned, and the ``errno`` variable is set appropriately. Possible error codes are: diff --git a/Documentation/userspace-api/media/v4l/func-munmap.rst b/Documentation/userspace-api/media/v4l/func-munmap.rst index 18a9941b47ab..077d58333904 100644 --- a/Documentation/userspace-api/media/v4l/func-munmap.rst +++ b/Documentation/userspace-api/media/v4l/func-munmap.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _func-munmap: @@ -18,7 +12,6 @@ Name v4l2-munmap - Unmap device memory - Synopsis ======== @@ -27,37 +20,33 @@ Synopsis #include <unistd.h> #include <sys/mman.h> - .. c:function:: int munmap( void *start, size_t length ) - :name: v4l2-munmap Arguments ========= ``start`` Address of the mapped buffer as returned by the - :ref:`mmap() <func-mmap>` function. + :c:func:`mmap()` function. ``length`` Length of the mapped buffer. This must be the same value as given to - :ref:`mmap() <func-mmap>` and returned by the driver in the struct + :c:func:`mmap()` and returned by the driver in the struct :c:type:`v4l2_buffer` ``length`` field for the single-planar API and in the struct :c:type:`v4l2_plane` ``length`` field for the multi-planar API. - Description =========== -Unmaps a previously with the :ref:`mmap() <func-mmap>` function mapped +Unmaps a previously with the :c:func:`mmap()` function mapped buffer and frees it, if possible. - Return Value ============ -On success :ref:`munmap() <func-munmap>` returns 0, on failure -1 and the +On success :c:func:`munmap()` returns 0, on failure -1 and the ``errno`` variable is set appropriately: EINVAL diff --git a/Documentation/userspace-api/media/v4l/func-open.rst b/Documentation/userspace-api/media/v4l/func-open.rst index 8bcdec8ab387..ba23ff1e45dd 100644 --- a/Documentation/userspace-api/media/v4l/func-open.rst +++ b/Documentation/userspace-api/media/v4l/func-open.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _func-open: @@ -18,7 +12,6 @@ Name v4l2-open - Open a V4L2 device - Synopsis ======== @@ -26,9 +19,7 @@ Synopsis #include <fcntl.h> - .. c:function:: int open( const char *device_name, int flags ) - :name: v4l2-open Arguments ========= @@ -41,7 +32,7 @@ Arguments technicality, input devices still support only reading and output devices only writing. - When the ``O_NONBLOCK`` flag is given, the :ref:`read() <func-read>` + When the ``O_NONBLOCK`` flag is given, the :c:func:`read()` function and the :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>` ioctl will return the ``EAGAIN`` error code when no data is available or no buffer is in the driver outgoing queue, otherwise these functions @@ -50,22 +41,20 @@ Arguments Other flags have no effect. - Description =========== -To open a V4L2 device applications call :ref:`open() <func-open>` with the +To open a V4L2 device applications call :c:func:`open()` with the desired device name. This function has no side effects; all data format parameters, current input or output, control values or other properties -remain unchanged. At the first :ref:`open() <func-open>` call after loading the +remain unchanged. At the first :c:func:`open()` call after loading the driver they will be reset to default values, drivers are never in an undefined state. - Return Value ============ -On success :ref:`open() <func-open>` returns the new file descriptor. On error +On success :c:func:`open()` returns the new file descriptor. On error -1 is returned, and the ``errno`` variable is set appropriately. Possible error codes are: diff --git a/Documentation/userspace-api/media/v4l/func-poll.rst b/Documentation/userspace-api/media/v4l/func-poll.rst index 2c6704c1fab7..cbf4a0a10ae2 100644 --- a/Documentation/userspace-api/media/v4l/func-poll.rst +++ b/Documentation/userspace-api/media/v4l/func-poll.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _func-poll: @@ -18,7 +12,6 @@ Name v4l2-poll - Wait for some event on a file descriptor - Synopsis ======== @@ -26,19 +19,16 @@ Synopsis #include <sys/poll.h> - .. c:function:: int poll( struct pollfd *ufds, unsigned int nfds, int timeout ) - :name: v4l2-poll Arguments ========= - Description =========== -With the :ref:`poll() <func-poll>` function applications can suspend execution +With the :c:func:`poll()` function applications can suspend execution until the driver has captured data or is ready to accept data for output. @@ -51,57 +41,56 @@ display. When buffers are already in the outgoing queue of the driver (capture) or the incoming queue isn't full (display) the function returns immediately. -On success :ref:`poll() <func-poll>` returns the number of file descriptors +On success :c:func:`poll()` returns the number of file descriptors that have been selected (that is, file descriptors for which the -``revents`` field of the respective :c:func:`struct pollfd` structure +``revents`` field of the respective ``struct pollfd`` structure is non-zero). Capture devices set the ``POLLIN`` and ``POLLRDNORM`` flags in the ``revents`` field, output devices the ``POLLOUT`` and ``POLLWRNORM`` flags. When the function timed out it returns a value of zero, on failure it returns -1 and the ``errno`` variable is set appropriately. When the application did not call -:ref:`VIDIOC_STREAMON <VIDIOC_STREAMON>` the :ref:`poll() <func-poll>` +:ref:`VIDIOC_STREAMON <VIDIOC_STREAMON>` the :c:func:`poll()` function succeeds, but sets the ``POLLERR`` flag in the ``revents`` field. When the application has called :ref:`VIDIOC_STREAMON <VIDIOC_STREAMON>` for a capture device but hasn't yet called :ref:`VIDIOC_QBUF <VIDIOC_QBUF>`, the -:ref:`poll() <func-poll>` function succeeds and sets the ``POLLERR`` flag in +:c:func:`poll()` function succeeds and sets the ``POLLERR`` flag in the ``revents`` field. For output devices this same situation will cause -:ref:`poll() <func-poll>` to succeed as well, but it sets the ``POLLOUT`` and +:c:func:`poll()` to succeed as well, but it sets the ``POLLOUT`` and ``POLLWRNORM`` flags in the ``revents`` field. If an event occurred (see :ref:`VIDIOC_DQEVENT`) then ``POLLPRI`` will be set in the ``revents`` field and -:ref:`poll() <func-poll>` will return. +:c:func:`poll()` will return. -When use of the :ref:`read() <func-read>` function has been negotiated and the -driver does not capture yet, the :ref:`poll() <func-poll>` function starts +When use of the :c:func:`read()` function has been negotiated and the +driver does not capture yet, the :c:func:`poll()` function starts capturing. When that fails it returns a ``POLLERR`` as above. Otherwise it waits until data has been captured and can be read. When the driver captures continuously (as opposed to, for example, still images) the function may return immediately. -When use of the :ref:`write() <func-write>` function has been negotiated and the -driver does not stream yet, the :ref:`poll() <func-poll>` function starts +When use of the :c:func:`write()` function has been negotiated and the +driver does not stream yet, the :c:func:`poll()` function starts streaming. When that fails it returns a ``POLLERR`` as above. Otherwise it waits until the driver is ready for a non-blocking -:ref:`write() <func-write>` call. +:c:func:`write()` call. If the caller is only interested in events (just ``POLLPRI`` is set in -the ``events`` field), then :ref:`poll() <func-poll>` will *not* start +the ``events`` field), then :c:func:`poll()` will *not* start streaming if the driver does not stream yet. This makes it possible to just poll for events and not for buffers. -All drivers implementing the :ref:`read() <func-read>` or :ref:`write() <func-write>` -function or streaming I/O must also support the :ref:`poll() <func-poll>` +All drivers implementing the :c:func:`read()` or :c:func:`write()` +function or streaming I/O must also support the :c:func:`poll()` function. -For more details see the :ref:`poll() <func-poll>` manual page. - +For more details see the :c:func:`poll()` manual page. Return Value ============ -On success, :ref:`poll() <func-poll>` returns the number structures which have +On success, :c:func:`poll()` returns the number structures which have non-zero ``revents`` fields, or zero if the call timed out. On error -1 is returned, and the ``errno`` variable is set appropriately: diff --git a/Documentation/userspace-api/media/v4l/func-read.rst b/Documentation/userspace-api/media/v4l/func-read.rst index 1728aa5d8313..e6f6ac4bed77 100644 --- a/Documentation/userspace-api/media/v4l/func-read.rst +++ b/Documentation/userspace-api/media/v4l/func-read.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _func-read: @@ -18,7 +12,6 @@ Name v4l2-read - Read from a V4L2 device - Synopsis ======== @@ -26,15 +19,13 @@ Synopsis #include <unistd.h> - .. c:function:: ssize_t read( int fd, void *buf, size_t count ) - :name: v4l2-read Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``buf`` Buffer to be filled @@ -45,48 +36,48 @@ Arguments Description =========== -:ref:`read() <func-read>` attempts to read up to ``count`` bytes from file +:c:func:`read()` attempts to read up to ``count`` bytes from file descriptor ``fd`` into the buffer starting at ``buf``. The layout of the data in the buffer is discussed in the respective device interface -section, see ##. If ``count`` is zero, :ref:`read() <func-read>` returns zero +section, see ##. If ``count`` is zero, :c:func:`read()` returns zero and has no other results. If ``count`` is greater than ``SSIZE_MAX``, the result is unspecified. Regardless of the ``count`` value each -:ref:`read() <func-read>` call will provide at most one frame (two fields) +:c:func:`read()` call will provide at most one frame (two fields) worth of data. -By default :ref:`read() <func-read>` blocks until data becomes available. When -the ``O_NONBLOCK`` flag was given to the :ref:`open() <func-open>` +By default :c:func:`read()` blocks until data becomes available. When +the ``O_NONBLOCK`` flag was given to the :c:func:`open()` function it returns immediately with an ``EAGAIN`` error code when no data -is available. The :ref:`select() <func-select>` or -:ref:`poll() <func-poll>` functions can always be used to suspend +is available. The :c:func:`select()` or +:c:func:`poll()` functions can always be used to suspend execution until data becomes available. All drivers supporting the -:ref:`read() <func-read>` function must also support :ref:`select() <func-select>` and -:ref:`poll() <func-poll>`. +:c:func:`read()` function must also support :c:func:`select()` and +:c:func:`poll()`. Drivers can implement read functionality in different ways, using a single or multiple buffers and discarding the oldest or newest frames once the internal buffers are filled. -:ref:`read() <func-read>` never returns a "snapshot" of a buffer being filled. +:c:func:`read()` never returns a "snapshot" of a buffer being filled. Using a single buffer the driver will stop capturing when the application starts reading the buffer until the read is finished. Thus only the period of the vertical blanking interval is available for reading, or the capture rate must fall below the nominal frame rate of the video standard. -The behavior of :ref:`read() <func-read>` when called during the active picture +The behavior of :c:func:`read()` when called during the active picture period or the vertical blanking separating the top and bottom field depends on the discarding policy. A driver discarding the oldest frames keeps capturing into an internal buffer, continuously overwriting the previously, not read frame, and returns the frame being received at the -time of the :ref:`read() <func-read>` call as soon as it is complete. +time of the :c:func:`read()` call as soon as it is complete. A driver discarding the newest frames stops capturing until the next -:ref:`read() <func-read>` call. The frame being received at :ref:`read() <func-read>` +:c:func:`read()` call. The frame being received at :c:func:`read()` time is discarded, returning the following frame instead. Again this implies a reduction of the capture rate to one half or less of the nominal frame rate. An example of this model is the video read mode of -the bttv driver, initiating a DMA to user memory when :ref:`read() <func-read>` +the bttv driver, initiating a DMA to user memory when :c:func:`read()` is called and returning when the DMA finished. In the multiple buffer model drivers maintain a ring of internal @@ -101,14 +92,13 @@ the driver with the :ref:`VIDIOC_G_PARM <VIDIOC_G_PARM>` and however. The discarding policy is not reported and cannot be changed. For minimum requirements see :ref:`devices`. - Return Value ============ On success, the number of bytes read is returned. It is not an error if this number is smaller than the number of bytes requested, or the amount of data required for one frame. This may happen for example because -:ref:`read() <func-read>` was interrupted by a signal. On error, -1 is +:c:func:`read()` was interrupted by a signal. On error, -1 is returned, and the ``errno`` variable is set appropriately. In this case the next read will start at the beginning of a new frame. Possible error codes are: @@ -136,5 +126,5 @@ EIO communicate with a remote device (USB camera etc.). EINVAL - The :ref:`read() <func-read>` function is not supported by this driver, not + The :c:func:`read()` function is not supported by this driver, not on this device, or generally not on this type of device. diff --git a/Documentation/userspace-api/media/v4l/func-select.rst b/Documentation/userspace-api/media/v4l/func-select.rst index 6aca8a290c1f..ba1879c728f0 100644 --- a/Documentation/userspace-api/media/v4l/func-select.rst +++ b/Documentation/userspace-api/media/v4l/func-select.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _func-select: @@ -18,7 +12,6 @@ Name v4l2-select - Synchronous I/O multiplexing - Synopsis ======== @@ -28,9 +21,7 @@ Synopsis #include <sys/types.h> #include <unistd.h> - .. c:function:: int select( int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout ) - :name: v4l2-select Arguments ========= @@ -50,11 +41,10 @@ Arguments ``timeout`` Maximum time to wait. - Description =========== -With the :ref:`select() <func-select>` function applications can suspend +With the :c:func:`select()` function applications can suspend execution until the driver has captured data or is ready to accept data for output. @@ -63,40 +53,39 @@ buffer has been filled or displayed and can be dequeued with the :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>` ioctl. When buffers are already in the outgoing queue of the driver the function returns immediately. -On success :ref:`select() <func-select>` returns the total number of bits set in -:c:func:`struct fd_set`. When the function timed out it returns +On success :c:func:`select()` returns the total number of bits set in +``fd_set``. When the function timed out it returns a value of zero. On failure it returns -1 and the ``errno`` variable is set appropriately. When the application did not call :ref:`VIDIOC_QBUF` or -:ref:`VIDIOC_STREAMON` yet the :ref:`select() <func-select>` +:ref:`VIDIOC_STREAMON` yet the :c:func:`select()` function succeeds, setting the bit of the file descriptor in ``readfds`` or ``writefds``, but subsequent :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>` calls will fail. [#f1]_ -When use of the :ref:`read() <func-read>` function has been negotiated and the -driver does not capture yet, the :ref:`select() <func-select>` function starts -capturing. When that fails, :ref:`select() <func-select>` returns successful and -a subsequent :ref:`read() <func-read>` call, which also attempts to start +When use of the :c:func:`read()` function has been negotiated and the +driver does not capture yet, the :c:func:`select()` function starts +capturing. When that fails, :c:func:`select()` returns successful and +a subsequent :c:func:`read()` call, which also attempts to start capturing, will return an appropriate error code. When the driver captures continuously (as opposed to, for example, still images) and -data is already available the :ref:`select() <func-select>` function returns +data is already available the :c:func:`select()` function returns immediately. -When use of the :ref:`write() <func-write>` function has been negotiated the -:ref:`select() <func-select>` function just waits until the driver is ready for a -non-blocking :ref:`write() <func-write>` call. +When use of the :c:func:`write()` function has been negotiated the +:c:func:`select()` function just waits until the driver is ready for a +non-blocking :c:func:`write()` call. -All drivers implementing the :ref:`read() <func-read>` or :ref:`write() <func-write>` -function or streaming I/O must also support the :ref:`select() <func-select>` +All drivers implementing the :c:func:`read()` or :c:func:`write()` +function or streaming I/O must also support the :c:func:`select()` function. -For more details see the :ref:`select() <func-select>` manual page. - +For more details see the :c:func:`select()` manual page. Return Value ============ -On success, :ref:`select() <func-select>` returns the number of descriptors +On success, :c:func:`select()` returns the number of descriptors contained in the three returned descriptor sets, which will be zero if the timeout expired. On error -1 is returned, and the ``errno`` variable is set appropriately; the sets and ``timeout`` are undefined. Possible @@ -122,6 +111,6 @@ EINVAL ``FD_SETSIZE``. .. [#f1] - The Linux kernel implements :ref:`select() <func-select>` like the - :ref:`poll() <func-poll>` function, but :ref:`select() <func-select>` cannot + The Linux kernel implements :c:func:`select()` like the + :c:func:`poll()` function, but :c:func:`select()` cannot return a ``POLLERR``. diff --git a/Documentation/userspace-api/media/v4l/func-write.rst b/Documentation/userspace-api/media/v4l/func-write.rst index fb1955f70f0f..49f5a0f4275f 100644 --- a/Documentation/userspace-api/media/v4l/func-write.rst +++ b/Documentation/userspace-api/media/v4l/func-write.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _func-write: @@ -18,7 +12,6 @@ Name v4l2-write - Write to a V4L2 device - Synopsis ======== @@ -26,15 +19,13 @@ Synopsis #include <unistd.h> - .. c:function:: ssize_t write( int fd, void *buf, size_t count ) - :name: v4l2-write Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``buf`` Buffer with data to be written @@ -45,10 +36,10 @@ Arguments Description =========== -:ref:`write() <func-write>` writes up to ``count`` bytes to the device +:c:func:`write()` writes up to ``count`` bytes to the device referenced by the file descriptor ``fd`` from the buffer starting at ``buf``. When the hardware outputs are not active yet, this function -enables them. When ``count`` is zero, :ref:`write() <func-write>` returns 0 +enables them. When ``count`` is zero, :c:func:`write()` returns 0 without any other effect. When the application does not provide more data in time, the previous @@ -56,7 +47,6 @@ video frame, raw VBI image, sliced VPS or WSS data is displayed again. Sliced Teletext or Closed Caption data is not repeated, the driver inserts a blank line instead. - Return Value ============ @@ -87,5 +77,5 @@ EIO I/O error. This indicates some hardware problem. EINVAL - The :ref:`write() <func-write>` function is not supported by this driver, + The :c:func:`write()` function is not supported by this driver, not on this device, or generally not on this type of device. diff --git a/Documentation/userspace-api/media/v4l/hist-v4l2.rst b/Documentation/userspace-api/media/v4l/hist-v4l2.rst index 6dcfe6046e33..28a2750d5c8c 100644 --- a/Documentation/userspace-api/media/v4l/hist-v4l2.rst +++ b/Documentation/userspace-api/media/v4l/hist-v4l2.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _hist-v4l2: @@ -21,18 +15,17 @@ not just an extension but a replacement for the V4L API. However it took another four years and two stable kernel releases until the new API was finally accepted for inclusion into the kernel in its present form. - Early Versions ============== 1998-08-20: First version. -1998-08-27: The :ref:`select() <func-select>` function was introduced. +1998-08-27: The :c:func:`select()` function was introduced. 1998-09-10: New video standard interface. 1998-09-18: The ``VIDIOC_NONCAP`` ioctl was replaced by the otherwise -meaningless ``O_TRUNC`` :ref:`open() <func-open>` flag, and the +meaningless ``O_TRUNC`` :c:func:`open()` flag, and the aliases ``O_NONCAP`` and ``O_NOIO`` were defined. Applications can set this flag if they intend to access controls only, as opposed to capture applications which need exclusive access. The ``VIDEO_STD_XXX`` @@ -52,7 +45,7 @@ renamed to :ref:`VIDIOC_ENUMSTD`, Codec API was released. 1998-11-08: Many minor changes. Most symbols have been renamed. Some -material changes to struct :c:type:`v4l2_capability`. +material changes to struct v4l2_capability. 1998-11-12: The read/write directon of some ioctls was misdefined. @@ -72,7 +65,6 @@ output devices were added. 1999-01-19: The ``VIDIOC_NEXTBUF`` ioctl was removed. - V4L2 Version 0.16 1999-01-31 ============================ @@ -80,7 +72,6 @@ V4L2 Version 0.16 1999-01-31 are gone. VIDIOC_QBUF takes a v4l2_buffer as a parameter. Added digital zoom (cropping) controls. - V4L2 Version 0.18 1999-03-16 ============================ @@ -88,7 +79,6 @@ Added a v4l to V4L2 ioctl compatibility layer to videodev.c. Driver writers, this changes how you implement your ioctl handler. See the Driver Writer's Guide. Added some more control id codes. - V4L2 Version 0.19 1999-06-05 ============================ @@ -114,7 +104,6 @@ malfunction of this ioctl. 1999-06-05: Changed the value of V4L2_CID_WHITENESS. - V4L2 Version 0.20 (1999-09-10) ============================== @@ -123,9 +112,8 @@ compatible* with 0.19 and earlier versions. Purpose of these changes was to simplify the API, while making it more extensible and following common Linux driver API conventions. -1. Some typos in ``V4L2_FMT_FLAG`` symbols were fixed. struct - :c:type:`v4l2_clip` was changed for compatibility with - v4l. (1999-08-30) +1. Some typos in ``V4L2_FMT_FLAG`` symbols were fixed. struct v4l2_clip + was changed for compatibility with v4l. (1999-08-30) 2. ``V4L2_TUNER_SUB_LANG1`` was added. (1999-09-05) @@ -136,14 +124,12 @@ common Linux driver API conventions. VIDIOC_STREAMON, VIDIOC_STREAMOFF, VIDIOC_S_FREQ, VIDIOC_S_INPUT, VIDIOC_S_OUTPUT, VIDIOC_S_EFFECT. For example - .. code-block:: c err = ioctl (fd, VIDIOC_XXX, V4L2_XXX); becomes - .. code-block:: c int a = V4L2_XXX; err = ioctl(fd, VIDIOC_XXX, &a); @@ -158,16 +144,14 @@ common Linux driver API conventions. This change obsoletes the following ioctls: ``VIDIOC_S_INFMT``, ``VIDIOC_G_INFMT``, ``VIDIOC_S_OUTFMT``, ``VIDIOC_G_OUTFMT``, ``VIDIOC_S_VBIFMT`` and ``VIDIOC_G_VBIFMT``. The image format - structure struct :c:type:`v4l2_format` was renamed to struct - :c:type:`v4l2_pix_format`, while struct - :c:type:`v4l2_format` is now the envelopping structure + struct v4l2_format was renamed to struct v4l2_pix_format, while + struct v4l2_format is now the envelopping structure for all format negotiations. 5. Similar to the changes above, the ``VIDIOC_G_PARM`` and ``VIDIOC_S_PARM`` ioctls were merged with ``VIDIOC_G_OUTPARM`` and - ``VIDIOC_S_OUTPARM``. A ``type`` field in the new struct - :c:type:`v4l2_streamparm` selects the respective - union member. + ``VIDIOC_S_OUTPARM``. A ``type`` field in the new struct v4l2_streamparm + selects the respective union member. This change obsoletes the ``VIDIOC_G_OUTPARM`` and ``VIDIOC_S_OUTPARM`` ioctls. @@ -185,7 +169,7 @@ common Linux driver API conventions. categories might have a greater separation, or may even appear in separate windows. -7. The struct :c:type:`v4l2_buffer` ``timestamp`` was +7. The struct v4l2_buffer ``timestamp`` was changed to a 64 bit integer, containing the sampling or output time of the frame in nanoseconds. Additionally timestamps will be in absolute system time, not starting from zero at the beginning of a @@ -208,16 +192,14 @@ common Linux driver API conventions. v4l2_masterclock_gettime() function (used only by drivers) to return a 64-bit integer. -8. A ``sequence`` field was added to struct - :c:type:`v4l2_buffer`. The ``sequence`` field counts - captured frames, it is ignored by output devices. When a capture - driver drops a frame, the sequence number of that frame is skipped. - +8. A ``sequence`` field was added to struct v4l2_buffer. The ``sequence`` + field counts captured frames, it is ignored by output devices. When a + capture driver drops a frame, the sequence number of that frame is skipped. V4L2 Version 0.20 incremental changes ===================================== -1999-12-23: In struct :c:type:`v4l2_vbi_format` the +1999-12-23: In struct v4l2_vbi_format the ``reserved1`` field became ``offset``. Previously drivers were required to clear the ``reserved1`` field. @@ -262,10 +244,9 @@ multiple tuners into account.) compatibility* as the :ref:`VIDIOC_G_FMT <VIDIOC_G_FMT>` and :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctls may fail now if the struct ``v4l2_fmt`` ``type`` field does not contain -``V4L2_BUF_TYPE_VBI``. In the documentation of the struct -:c:type:`v4l2_vbi_format` ``offset`` field the -ambiguous phrase "rising edge" was changed to "leading edge". - +``V4L2_BUF_TYPE_VBI``. In the documentation of the struct v4l2_vbi_format`, +the ``offset`` field the ambiguous phrase "rising edge" was changed to +"leading edge". V4L2 Version 0.20 2000-11-23 ============================ @@ -302,13 +283,11 @@ A number of changes were made to the raw VBI interface. were added. The former is an alias for the old ``V4L2_TYPE_VBI``, the latter was missing in the ``videodev.h`` file. - V4L2 Version 0.20 2002-07-25 ============================ Added sliced VBI interface proposal. - V4L2 in Linux 2.5.46, 2002-10 ============================= @@ -319,7 +298,7 @@ This unnamed version was finally merged into Linux 2.5.46. 1. As specified in :ref:`related`, drivers must make related device functions available under all minor device numbers. -2. The :ref:`open() <func-open>` function requires access mode +2. The :c:func:`open()` function requires access mode ``O_RDWR`` regardless of the device type. All V4L2 drivers exchanging data with applications must support the ``O_NONBLOCK`` flag. The ``O_NOIO`` flag, a V4L2 symbol which aliased the @@ -328,7 +307,7 @@ This unnamed version was finally merged into Linux 2.5.46. until the application attempts to initiate a data exchange, see :ref:`open`. -3. The struct :c:type:`v4l2_capability` changed +3. The struct v4l2_capability changed dramatically. Note that also the size of the structure changed, which is encoded in the ioctl request code, thus older V4L2 devices will respond with an ``EINVAL`` error code to the new @@ -361,7 +340,7 @@ This unnamed version was finally merged into Linux 2.5.46. ``V4L2_FLAG_MONOCHROME`` flag was removed, this information is available as described in :ref:`format`. -4. In struct :c:type:`v4l2_input` the ``assoc_audio`` +4. In struct v4l2_input the ``assoc_audio`` field and the ``capability`` field and its only flag ``V4L2_INPUT_CAP_AUDIO`` was replaced by the new ``audioset`` field. Instead of linking one video input to one audio input this field @@ -370,11 +349,11 @@ This unnamed version was finally merged into Linux 2.5.46. New fields are ``tuner`` (reversing the former link from tuners to video inputs), ``std`` and ``status``. - Accordingly struct :c:type:`v4l2_output` lost its + Accordingly struct v4l2_output lost its ``capability`` and ``assoc_audio`` fields. ``audioset``, ``modulator`` and ``std`` where added instead. -5. The struct :c:type:`v4l2_audio` field ``audio`` was +5. The struct v4l2_audio field ``audio`` was renamed to ``index``, for consistency with other structures. A new capability flag ``V4L2_AUDCAP_STEREO`` was added to indicated if the audio input in question supports stereo sound. @@ -382,21 +361,20 @@ This unnamed version was finally merged into Linux 2.5.46. where removed. This can be easily implemented using controls. (However the same applies to AVL which is still there.) - Again for consistency the struct - :c:type:`v4l2_audioout` field ``audio`` was renamed + Again for consistency the struct v4l2_audioout field ``audio`` was renamed to ``index``. -6. The struct :c:type:`v4l2_tuner` ``input`` field was +6. The struct v4l2_tuner ``input`` field was replaced by an ``index`` field, permitting devices with multiple tuners. The link between video inputs and tuners is now reversed, inputs point to their tuner. The ``std`` substructure became a - simple set (more about this below) and moved into struct - :c:type:`v4l2_input`. A ``type`` field was added. + simple set (more about this below) and moved into struct v4l2_input. + A ``type`` field was added. - Accordingly in struct :c:type:`v4l2_modulator` the + Accordingly in struct v4l2_modulator the ``output`` was replaced by an ``index`` field. - In struct :c:type:`v4l2_frequency` the ``port`` + In struct v4l2_frequency the ``port`` field was replaced by a ``tuner`` field containing the respective tuner or modulator index number. A tuner ``type`` field was added and the ``reserved`` field became larger for future extensions @@ -412,7 +390,7 @@ This unnamed version was finally merged into Linux 2.5.46. :ref:`VIDIOC_S_STD <VIDIOC_G_STD>` now take a pointer to this type as argument. :ref:`VIDIOC_QUERYSTD` was added to autodetect the received standard, if the hardware has this - capability. In struct :c:type:`v4l2_standard` an + capability. In struct v4l2_standard an ``index`` field was added for :ref:`VIDIOC_ENUMSTD`. A :ref:`v4l2_std_id <v4l2-std-id>` field named ``id`` was added as @@ -424,10 +402,10 @@ This unnamed version was finally merged into Linux 2.5.46. Struct ``v4l2_enumstd`` ceased to be. :ref:`VIDIOC_ENUMSTD` now takes a pointer to a - struct :c:type:`v4l2_standard` directly. The + struct v4l2_standard directly. The information which standards are supported by a particular video - input or output moved into struct :c:type:`v4l2_input` - and struct :c:type:`v4l2_output` fields named ``std``, + input or output moved into struct v4l2_input + and struct v4l2_output fields named ``std``, respectively. 8. The struct :ref:`v4l2_queryctrl <v4l2-queryctrl>` fields @@ -439,15 +417,13 @@ This unnamed version was finally merged into Linux 2.5.46. :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>`, but without the overhead of programming the hardware and regardless of I/O in progress. - In struct :c:type:`v4l2_format` the ``fmt`` union was - extended to contain struct :c:type:`v4l2_window`. All + In struct v4l2_format the ``fmt`` union was + extended to contain struct v4l2_window. All image format negotiations are now possible with ``VIDIOC_G_FMT``, ``VIDIOC_S_FMT`` and ``VIDIOC_TRY_FMT``; ioctl. The ``VIDIOC_G_WIN`` and ``VIDIOC_S_WIN`` ioctls to prepare for a video overlay were - removed. The ``type`` field changed to type enum - :c:type:`v4l2_buf_type` and the buffer type names - changed as follows. - + removed. The ``type`` field changed to type enum v4l2_buf_type and + the buffer type names changed as follows. .. flat-table:: @@ -455,7 +431,7 @@ This unnamed version was finally merged into Linux 2.5.46. :stub-columns: 0 * - Old defines - - enum :c:type:`v4l2_buf_type` + - enum v4l2_buf_type * - ``V4L2_BUF_TYPE_CAPTURE`` - ``V4L2_BUF_TYPE_VIDEO_CAPTURE`` * - ``V4L2_BUF_TYPE_CODECIN`` @@ -483,16 +459,12 @@ This unnamed version was finally merged into Linux 2.5.46. * - ``V4L2_BUF_TYPE_PRIVATE_BASE`` - ``V4L2_BUF_TYPE_PRIVATE`` (but this is deprecated) +10. In struct v4l2_fmtdesc a enum v4l2_buf_type field named ``type`` was + added as in struct v4l2_format. The ``VIDIOC_ENUM_FBUFFMT`` ioctl is no + longer needed and was removed. These calls can be replaced by + :ref:`VIDIOC_ENUM_FMT` with type ``V4L2_BUF_TYPE_VIDEO_OVERLAY``. -10. In struct :c:type:`v4l2_fmtdesc` a enum - :c:type:`v4l2_buf_type` field named ``type`` was - added as in struct :c:type:`v4l2_format`. The - ``VIDIOC_ENUM_FBUFFMT`` ioctl is no longer needed and was removed. - These calls can be replaced by - :ref:`VIDIOC_ENUM_FMT` with type - ``V4L2_BUF_TYPE_VIDEO_OVERLAY``. - -11. In struct :c:type:`v4l2_pix_format` the ``depth`` +11. In struct v4l2_pix_format the ``depth`` field was removed, assuming applications which recognize the format by its four-character-code already know the color depth, and others do not care about it. The same rationale lead to the removal of the @@ -505,18 +477,15 @@ This unnamed version was finally merged into Linux 2.5.46. Since the remaining flags were replaced as well, the ``flags`` field itself was removed. - The interlace flags were replaced by a enum - :c:type:`v4l2_field` value in a newly added ``field`` - field. - - + The interlace flags were replaced by a enum v4l2_field value in a + newly added ``field`` field. .. flat-table:: :header-rows: 1 :stub-columns: 0 * - Old flag - - enum :c:type:`v4l2_field` + - enum v4l2_field * - ``V4L2_FMT_FLAG_NOT_INTERLACED`` - ? * - ``V4L2_FMT_FLAG_INTERLACED`` = ``V4L2_FMT_FLAG_COMBINED`` @@ -532,33 +501,31 @@ This unnamed version was finally merged into Linux 2.5.46. * - ``-`` - ``V4L2_FIELD_ALTERNATE`` - - The color space flags were replaced by a enum - :c:type:`v4l2_colorspace` value in a newly added - ``colorspace`` field, where one of ``V4L2_COLORSPACE_SMPTE170M``, - ``V4L2_COLORSPACE_BT878``, ``V4L2_COLORSPACE_470_SYSTEM_M`` or + The color space flags were replaced by a enum v4l2_colorspace value in + a newly added ``colorspace`` field, where one of + ``V4L2_COLORSPACE_SMPTE170M``, ``V4L2_COLORSPACE_BT878``, + ``V4L2_COLORSPACE_470_SYSTEM_M`` or ``V4L2_COLORSPACE_470_SYSTEM_BG`` replaces ``V4L2_FMT_CS_601YUV``. -12. In struct :c:type:`v4l2_requestbuffers` the - ``type`` field was properly defined as enum - :c:type:`v4l2_buf_type`. Buffer types changed as - mentioned above. A new ``memory`` field of type enum - :c:type:`v4l2_memory` was added to distinguish between +12. In struct v4l2_requestbuffers the + ``type`` field was properly defined as enum v4l2_buf_type. Buffer types + changed as mentioned above. A new ``memory`` field of type + enum v4l2_memory was added to distinguish between I/O methods using buffers allocated by the driver or the application. See :ref:`io` for details. -13. In struct :c:type:`v4l2_buffer` the ``type`` field was - properly defined as enum :c:type:`v4l2_buf_type`. +13. In struct v4l2_buffer the ``type`` field was + properly defined as enum v4l2_buf_type. Buffer types changed as mentioned above. A ``field`` field of type - enum :c:type:`v4l2_field` was added to indicate if a + enum v4l2_field was added to indicate if a buffer contains a top or bottom field. The old field flags were removed. Since no unadjusted system time clock was added to the kernel as planned, the ``timestamp`` field changed back from type stamp_t, an unsigned 64 bit integer expressing the sample time in - nanoseconds, to struct :c:type:`timeval`. With the addition + nanoseconds, to struct timeval. With the addition of a second memory mapping method the ``offset`` field moved into - union ``m``, and a new ``memory`` field of type enum - :c:type:`v4l2_memory` was added to distinguish between + union ``m``, and a new ``memory`` field of type enum v4l2_memory + was added to distinguish between I/O methods. See :ref:`io` for details. The ``V4L2_BUF_REQ_CONTIG`` flag was used by the V4L compatibility @@ -567,7 +534,7 @@ This unnamed version was finally merged into Linux 2.5.46. indeed allocated in device memory rather than DMA-able system memory. It was barely useful and so was removed. -14. In struct :c:type:`v4l2_framebuffer` the +14. In struct v4l2_framebuffer the ``base[3]`` array anticipating double- and triple-buffering in off-screen video memory, however without defining a synchronization mechanism, was replaced by a single pointer. The @@ -578,40 +545,38 @@ This unnamed version was finally merged into Linux 2.5.46. ``V4L2_FBUF_CAP_LIST_CLIPPING`` and ``V4L2_FBUF_CAP_BITMAP_CLIPPING``. -15. In struct :c:type:`v4l2_clip` the ``x``, ``y``, +15. In struct v4l2_clip the ``x``, ``y``, ``width`` and ``height`` field moved into a ``c`` substructure of - type struct :c:type:`v4l2_rect`. The ``x`` and ``y`` + type struct v4l2_rect. The ``x`` and ``y`` fields were renamed to ``left`` and ``top``, i. e. offsets to a context dependent origin. -16. In struct :c:type:`v4l2_window` the ``x``, ``y``, +16. In struct v4l2_window the ``x``, ``y``, ``width`` and ``height`` field moved into a ``w`` substructure as - above. A ``field`` field of type :c:type:`v4l2_field` was added to + above. A ``field`` field of type enum v4l2_field was added to distinguish between field and frame (interlaced) overlay. -17. The digital zoom interface, including struct - struct ``v4l2_zoomcap``, struct +17. The digital zoom interface, including struct ``v4l2_zoomcap``, struct ``v4l2_zoom``, ``V4L2_ZOOM_NONCAP`` and ``V4L2_ZOOM_WHILESTREAMING`` was replaced by a new cropping and - scaling interface. The previously unused struct - struct :c:type:`v4l2_cropcap` and struct :c:type:`v4l2_crop` + scaling interface. The previously unused + struct v4l2_cropcap and struct v4l2_crop where redefined for this purpose. See :ref:`crop` for details. -18. In struct :c:type:`v4l2_vbi_format` the +18. In struct v4l2_vbi_format the ``SAMPLE_FORMAT`` field now contains a four-character-code as used to identify video image formats and ``V4L2_PIX_FMT_GREY`` replaces the ``V4L2_VBI_SF_UBYTE`` define. The ``reserved`` field was extended. -19. In struct :c:type:`v4l2_captureparm` the type of - the ``timeperframe`` field changed from unsigned long to struct - :c:type:`v4l2_fract`. This allows the accurate +19. In struct v4l2_captureparm the type of + the ``timeperframe`` field changed from unsigned long to + struct v4l2_fract. This allows the accurate expression of multiples of the NTSC-M frame rate 30000 / 1001. A new field ``readbuffers`` was added to control the driver behaviour in read I/O mode. - Similar changes were made to struct - :c:type:`v4l2_outputparm`. + Similar changes were made to struct v4l2_outputparm. 20. The struct ``v4l2_performance`` and ``VIDIOC_G_PERF`` ioctl were dropped. Except when using the @@ -622,7 +587,6 @@ This unnamed version was finally merged into Linux 2.5.46. V4L2 documentation was inaccurate, this has been corrected in :ref:`pixfmt`. - V4L2 2003-06-19 =============== @@ -673,7 +637,6 @@ V4L2 2003-06-19 Kernel 2.6.39. Drivers and applications assuming a constant parameter need an update. - V4L2 2003-11-05 =============== @@ -682,7 +645,6 @@ V4L2 2003-11-05 refer to bytes in memory, in ascending address order. - .. flat-table:: :header-rows: 1 :stub-columns: 0 @@ -703,7 +665,6 @@ V4L2 2003-11-05 - R, G, B, X - B, G, R, X - The ``V4L2_PIX_FMT_BGR24`` example was always correct. In :ref:`v4l-image-properties` the mapping of the V4L @@ -714,7 +675,6 @@ V4L2 2003-11-05 RGB pixel formats differently. These issues have yet to be addressed, for details see :ref:`pixfmt-rgb`. - V4L2 in Linux 2.6.6, 2004-05-09 =============================== @@ -723,18 +683,16 @@ V4L2 in Linux 2.6.6, 2004-05-09 ioctl, while the read-only version was renamed to ``VIDIOC_CROPCAP_OLD``. The old ioctl was removed on Kernel 2.6.39. - V4L2 in Linux 2.6.8 =================== 1. A new field ``input`` (former ``reserved[0]``) was added to the - struct :c:type:`v4l2_buffer` structure. Purpose of this + struct v4l2_buffer. Purpose of this field is to alternate between video inputs (e. g. cameras) in step with the video capturing process. This function must be enabled with the new ``V4L2_BUF_FLAG_INPUT`` flag. The ``flags`` field is no longer read-only. - V4L2 spec erratum 2004-08-01 ============================ @@ -748,11 +706,10 @@ V4L2 spec erratum 2004-08-01 4. The documentation of the :ref:`VIDIOC_QBUF` and :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>` ioctls did not mention the - struct :c:type:`v4l2_buffer` ``memory`` field. It was + struct v4l2_buffer ``memory`` field. It was also missing from examples. Also on the ``VIDIOC_DQBUF`` page the ``EIO`` error code was not documented. - V4L2 in Linux 2.6.14 ==================== @@ -760,7 +717,6 @@ V4L2 in Linux 2.6.14 :ref:`sliced` and replaces the interface first proposed in V4L2 specification 0.8. - V4L2 in Linux 2.6.15 ==================== @@ -780,7 +736,6 @@ V4L2 in Linux 2.6.15 ``VIDIOC_G_MPEGCOMP`` and ``VIDIOC_S_MPEGCOMP`` ioctls where removed in Linux 2.6.25.) - V4L2 spec erratum 2005-11-27 ============================ @@ -790,37 +745,31 @@ cropping is supported. In the video standard selection example in :ref:`standard` the :ref:`VIDIOC_S_STD <VIDIOC_G_STD>` call used the wrong argument type. - V4L2 spec erratum 2006-01-10 ============================ -1. The ``V4L2_IN_ST_COLOR_KILL`` flag in struct - :c:type:`v4l2_input` not only indicates if the color - killer is enabled, but also if it is active. (The color killer - disables color decoding when it detects no color in the video signal - to improve the image quality.) +1. The ``V4L2_IN_ST_COLOR_KILL`` flag in struct v4l2_input not only + indicates if the color killer is enabled, but also if it is active. + (The color killer disables color decoding when it detects no color + in the video signal to improve the image quality.) 2. :ref:`VIDIOC_S_PARM <VIDIOC_G_PARM>` is a write-read ioctl, not write-only as stated on its reference page. The ioctl changed in 2003 as noted above. - V4L2 spec erratum 2006-02-03 ============================ -1. In struct :c:type:`v4l2_captureparm` and struct - :c:type:`v4l2_outputparm` the ``timeperframe`` +1. In struct v4l2_captureparm and struct v4l2_outputparm the ``timeperframe`` field gives the time in seconds, not microseconds. - V4L2 spec erratum 2006-02-04 ============================ -1. The ``clips`` field in struct :c:type:`v4l2_window` - must point to an array of struct :c:type:`v4l2_clip`, not - a linked list, because drivers ignore the struct - struct :c:type:`v4l2_clip`. ``next`` pointer. - +1. The ``clips`` field in struct v4l2_window + must point to an array of struct v4l2_clip, not + a linked list, because drivers ignore the + struct v4l2_clip. ``next`` pointer. V4L2 in Linux 2.6.17 ==================== @@ -836,7 +785,6 @@ V4L2 in Linux 2.6.17 ``V4L2_TUNER_MODE_STEREO`` for this purpose is deprecated now. See the :ref:`VIDIOC_G_TUNER <VIDIOC_G_TUNER>` section for details. - V4L2 spec erratum 2006-09-23 (Draft 0.15) ========================================= @@ -844,19 +792,18 @@ V4L2 spec erratum 2006-09-23 (Draft 0.15) ``V4L2_BUF_TYPE_SLICED_VBI_OUTPUT`` of the sliced VBI interface were not mentioned along with other buffer types. -2. In :ref:`VIDIOC_G_AUDIO <VIDIOC_G_AUDIO>` it was clarified that the struct - :c:type:`v4l2_audio` ``mode`` field is a flags field. +2. In :ref:`VIDIOC_G_AUDIO <VIDIOC_G_AUDIO>` it was clarified that the + struct v4l2_audio ``mode`` field is a flags field. 3. :ref:`VIDIOC_QUERYCAP` did not mention the sliced VBI and radio capability flags. -4. In :ref:`VIDIOC_G_FREQUENCY <VIDIOC_G_FREQUENCY>` it was clarified that applications - must initialize the tuner ``type`` field of struct - :c:type:`v4l2_frequency` before calling +4. In :ref:`VIDIOC_G_FREQUENCY <VIDIOC_G_FREQUENCY>` it was clarified that + applications must initialize the tuner ``type`` field of + struct v4l2_frequency before calling :ref:`VIDIOC_S_FREQUENCY <VIDIOC_G_FREQUENCY>`. -5. The ``reserved`` array in struct - :c:type:`v4l2_requestbuffers` has 2 elements, +5. The ``reserved`` array in struct v4l2_requestbuffers has 2 elements, not 32. 6. In :ref:`output` and :ref:`raw-vbi` the device file names @@ -866,7 +813,6 @@ V4L2 spec erratum 2006-09-23 (Draft 0.15) extended from 224-239 to 224-255. Accordingly device file names ``/dev/vbi0`` to ``/dev/vbi31`` are possible now. - V4L2 in Linux 2.6.18 ==================== @@ -876,16 +822,15 @@ V4L2 in Linux 2.6.18 flag to skip unsupported controls with :ref:`VIDIOC_QUERYCTRL`, new control types ``V4L2_CTRL_TYPE_INTEGER64`` and ``V4L2_CTRL_TYPE_CTRL_CLASS`` - (:c:type:`v4l2_ctrl_type`), and new control flags + (enum v4l2_ctrl_type), and new control flags ``V4L2_CTRL_FLAG_READ_ONLY``, ``V4L2_CTRL_FLAG_UPDATE``, ``V4L2_CTRL_FLAG_INACTIVE`` and ``V4L2_CTRL_FLAG_SLIDER`` (:ref:`control-flags`). See :ref:`extended-controls` for details. - V4L2 in Linux 2.6.19 ==================== -1. In struct :c:type:`v4l2_sliced_vbi_cap` a +1. In struct v4l2_sliced_vbi_cap a buffer type field was added replacing a reserved field. Note on architectures where the size of enum types differs from int types the size of the structure changed. The @@ -903,14 +848,12 @@ V4L2 in Linux 2.6.19 3. A new pixel format ``V4L2_PIX_FMT_RGB444`` (:ref:`pixfmt-rgb`) was added. - V4L2 spec erratum 2006-10-12 (Draft 0.17) ========================================= 1. ``V4L2_PIX_FMT_HM12`` (:ref:`reserved-formats`) is a YUV 4:2:0, not 4:2:2 format. - V4L2 in Linux 2.6.21 ==================== @@ -918,12 +861,11 @@ V4L2 in Linux 2.6.21 General Public License version two or later, and under a 3-clause BSD-style license. - V4L2 in Linux 2.6.22 ==================== 1. Two new field orders ``V4L2_FIELD_INTERLACED_TB`` and - ``V4L2_FIELD_INTERLACED_BT`` were added. See :c:type:`v4l2_field` for + ``V4L2_FIELD_INTERLACED_BT`` were added. See enum v4l2_field for details. 2. Three new clipping/blending methods with a global or straight or @@ -931,20 +873,17 @@ V4L2 in Linux 2.6.22 See the description of the :ref:`VIDIOC_G_FBUF <VIDIOC_G_FBUF>` and :ref:`VIDIOC_S_FBUF <VIDIOC_G_FBUF>` ioctls for details. - A new ``global_alpha`` field was added to - :c:type:`v4l2_window`, extending the structure. This - may *break compatibility* with applications using a struct - struct :c:type:`v4l2_window` directly. However the + A new ``global_alpha`` field was added to struct v4l2_window, + extending the structure. This may **break compatibility** with + applications using a struct v4l2_window directly. However the :ref:`VIDIOC_G/S/TRY_FMT <VIDIOC_G_FMT>` ioctls, which take a - pointer to a :c:type:`v4l2_format` parent structure + pointer to a struct v4l2_format parent structure with padding bytes at the end, are not affected. -3. The format of the ``chromakey`` field in struct - :c:type:`v4l2_window` changed from "host order RGB32" - to a pixel value in the same format as the framebuffer. This may - *break compatibility* with existing applications. Drivers supporting - the "host order RGB32" format are not known. - +3. The format of the ``chromakey`` field in struct v4l2_window changed from + "host order RGB32" to a pixel value in the same format as the framebuffer. + This may **break compatibility** with existing applications. Drivers + supporting the "host order RGB32" format are not known. V4L2 in Linux 2.6.24 ==================== @@ -953,7 +892,6 @@ V4L2 in Linux 2.6.24 ``V4L2_PIX_FMT_YUV555``, ``V4L2_PIX_FMT_YUV565`` and ``V4L2_PIX_FMT_YUV32`` were added. - V4L2 in Linux 2.6.25 ==================== @@ -980,7 +918,6 @@ V4L2 in Linux 2.6.25 interface in Linux 2.6.18, where finally removed from the ``videodev2.h`` header file. - V4L2 in Linux 2.6.26 ==================== @@ -990,7 +927,6 @@ V4L2 in Linux 2.6.26 2. Added user controls ``V4L2_CID_CHROMA_AGC`` and ``V4L2_CID_COLOR_KILLER``. - V4L2 in Linux 2.6.27 ==================== @@ -1002,7 +938,6 @@ V4L2 in Linux 2.6.27 ``V4L2_PIX_FMT_PCA561``, ``V4L2_PIX_FMT_SGBRG8``, ``V4L2_PIX_FMT_PAC207`` and ``V4L2_PIX_FMT_PJPG`` were added. - V4L2 in Linux 2.6.28 ==================== @@ -1014,14 +949,12 @@ V4L2 in Linux 2.6.28 3. The pixel formats ``V4L2_PIX_FMT_SGRBG10`` and ``V4L2_PIX_FMT_SGRBG10DPCM8`` were added. - V4L2 in Linux 2.6.29 ==================== 1. The ``VIDIOC_G_CHIP_IDENT`` ioctl was renamed to ``VIDIOC_G_CHIP_IDENT_OLD`` and ``VIDIOC_DBG_G_CHIP_IDENT`` was - introduced in its place. The old struct - struct ``v4l2_chip_ident`` was renamed to + introduced in its place. The old struct ``v4l2_chip_ident`` was renamed to struct ``v4l2_chip_ident_old``. 2. The pixel formats ``V4L2_PIX_FMT_VYUY``, ``V4L2_PIX_FMT_NV16`` and @@ -1031,7 +964,6 @@ V4L2 in Linux 2.6.29 ``V4L2_CID_ZOOM_RELATIVE``, ``V4L2_CID_ZOOM_CONTINUOUS`` and ``V4L2_CID_PRIVACY``. - V4L2 in Linux 2.6.30 ==================== @@ -1039,7 +971,6 @@ V4L2 in Linux 2.6.30 2. New control ``V4L2_CID_COLORFX`` was added. - V4L2 in Linux 2.6.32 ==================== @@ -1066,21 +997,18 @@ V4L2 in Linux 2.6.32 9. Added Remote Controller chapter, describing the default Remote Controller mapping for media devices. - V4L2 in Linux 2.6.33 ==================== 1. Added support for Digital Video timings in order to support HDTV receivers and transmitters. - V4L2 in Linux 2.6.34 ==================== 1. Added ``V4L2_CID_IRIS_ABSOLUTE`` and ``V4L2_CID_IRIS_RELATIVE`` controls to the :ref:`Camera controls class <camera-controls>`. - V4L2 in Linux 2.6.37 ==================== @@ -1089,7 +1017,6 @@ V4L2 in Linux 2.6.37 applications found that used it. It was originally scheduled for removal in 2.6.35. - V4L2 in Linux 2.6.39 ==================== @@ -1099,7 +1026,6 @@ V4L2 in Linux 2.6.39 drivers and applications. See :ref:`multi-planar API <planar-apis>` for details. - V4L2 in Linux 3.1 ================= @@ -1110,7 +1036,6 @@ V4L2 in Linux 3.1 Added V4L2_CTRL_TYPE_BITMASK. - V4L2 in Linux 3.2 ================= @@ -1121,7 +1046,6 @@ V4L2 in Linux 3.2 Does not affect the compatibility of current drivers and applications. See :ref:`selection API <selection-api>` for details. - V4L2 in Linux 3.3 ================= @@ -1131,7 +1055,6 @@ V4L2 in Linux 3.3 2. Added the device_caps field to struct v4l2_capabilities and added the new V4L2_CAP_DEVICE_CAPS capability. - V4L2 in Linux 3.4 ================= @@ -1142,7 +1065,6 @@ V4L2 in Linux 3.4 :ref:`VIDIOC_QUERY_DV_TIMINGS` and :ref:`VIDIOC_DV_TIMINGS_CAP`. - V4L2 in Linux 3.5 ================= @@ -1169,11 +1091,10 @@ V4L2 in Linux 3.5 ``V4L2_CID_AUTO_FOCUS_START``, ``V4L2_CID_AUTO_FOCUS_STOP``, ``V4L2_CID_AUTO_FOCUS_STATUS`` and ``V4L2_CID_AUTO_FOCUS_RANGE``. - V4L2 in Linux 3.6 ================= -1. Replaced ``input`` in struct :c:type:`v4l2_buffer` by +1. Replaced ``input`` in struct v4l2_buffer by ``reserved2`` and removed ``V4L2_BUF_FLAG_INPUT``. 2. Added V4L2_CAP_VIDEO_M2M and V4L2_CAP_VIDEO_M2M_MPLANE @@ -1182,17 +1103,15 @@ V4L2 in Linux 3.6 3. Added support for frequency band enumerations: :ref:`VIDIOC_ENUM_FREQ_BANDS`. - V4L2 in Linux 3.9 ================= 1. Added timestamp types to ``flags`` field in - struct :c:type:`v4l2_buffer`. See :ref:`buffer-flags`. + struct v4l2_buffer. See :ref:`buffer-flags`. 2. Added ``V4L2_EVENT_CTRL_CH_RANGE`` control event changes flag. See :ref:`ctrl-changes-flags`. - V4L2 in Linux 3.10 ================== @@ -1204,59 +1123,48 @@ V4L2 in Linux 3.10 2. Added new debugging ioctl :ref:`VIDIOC_DBG_G_CHIP_INFO`. - V4L2 in Linux 3.11 ================== 1. Remove obsolete ``VIDIOC_DBG_G_CHIP_IDENT`` ioctl. - V4L2 in Linux 3.14 ================== -1. In struct :c:type:`v4l2_rect`, the type of ``width`` and +1. In struct v4l2_rect, the type of ``width`` and ``height`` fields changed from _s32 to _u32. - V4L2 in Linux 3.15 ================== 1. Added Software Defined Radio (SDR) Interface. - V4L2 in Linux 3.16 ================== 1. Added event V4L2_EVENT_SOURCE_CHANGE. - V4L2 in Linux 3.17 ================== -1. Extended struct :c:type:`v4l2_pix_format`. Added +1. Extended struct v4l2_pix_format. Added format flags. 2. Added compound control types and :ref:`VIDIOC_QUERY_EXT_CTRL <VIDIOC_QUERYCTRL>`. - V4L2 in Linux 3.18 ================== 1. Added ``V4L2_CID_PAN_SPEED`` and ``V4L2_CID_TILT_SPEED`` camera controls. - V4L2 in Linux 3.19 ================== -1. Rewrote Colorspace chapter, added new enum - :c:type:`v4l2_ycbcr_encoding` and enum - :c:type:`v4l2_quantization` fields to struct - :c:type:`v4l2_pix_format`, struct - :c:type:`v4l2_pix_format_mplane` and - struct :c:type:`v4l2_mbus_framefmt`. - +1. Rewrote Colorspace chapter, added new enum v4l2_ycbcr_encoding + and enum v4l2_quantization fields to struct v4l2_pix_format, + struct v4l2_pix_format_mplane and struct v4l2_mbus_framefmt. V4L2 in Linux 4.4 ================= @@ -1268,13 +1176,11 @@ V4L2 in Linux 4.4 3. Added transmitter support for Software Defined Radio (SDR) Interface. - .. _other: Relation of V4L2 to other Linux multimedia APIs =============================================== - .. _xvideo: X Video Extension @@ -1320,7 +1226,6 @@ YUV to RGB conversion and scaling for faster video playback, and added an interface to MPEG-2 decoding hardware. This API is useful to display images captured with V4L2 devices. - Digital Video ------------- @@ -1330,13 +1235,11 @@ homepage at `https://linuxtv.org <https://linuxtv.org>`__. The Linux DVB API has no connection to the V4L2 API except that drivers for hybrid hardware may support both. - Audio Interfaces ---------------- [to do - OSS/ALSA] - .. _experimental: Experimental API Elements @@ -1350,7 +1253,6 @@ change in the future. - :ref:`VIDIOC_DBG_G_CHIP_INFO` ioctl. - .. _obsolete: Obsolete API Elements diff --git a/Documentation/userspace-api/media/v4l/hsv-formats.rst b/Documentation/userspace-api/media/v4l/hsv-formats.rst index 4906f7e0d80d..d810c914b673 100644 --- a/Documentation/userspace-api/media/v4l/hsv-formats.rst +++ b/Documentation/userspace-api/media/v4l/hsv-formats.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _hsv-formats: diff --git a/Documentation/userspace-api/media/v4l/io.rst b/Documentation/userspace-api/media/v4l/io.rst index de0e2f529268..ce0cece6f35f 100644 --- a/Documentation/userspace-api/media/v4l/io.rst +++ b/Documentation/userspace-api/media/v4l/io.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _io: @@ -16,8 +10,8 @@ The V4L2 API defines several different methods to read from or write to a device. All drivers exchanging data with applications must support at least one of them. -The classic I/O method using the :ref:`read() <func-read>` and -:ref:`write() <func-write>` function is automatically selected after opening a +The classic I/O method using the :c:func:`read()` and +:c:func:`write()` function is automatically selected after opening a V4L2 device. When the driver does not support this method attempts to read or write will fail at any time. @@ -45,7 +39,6 @@ closing and reopening the device. The following sections describe the various I/O methods in more detail. - .. toctree:: :maxdepth: 1 diff --git a/Documentation/userspace-api/media/v4l/libv4l-introduction.rst b/Documentation/userspace-api/media/v4l/libv4l-introduction.rst index 95f3127b4749..05690f2358ce 100644 --- a/Documentation/userspace-api/media/v4l/libv4l-introduction.rst +++ b/Documentation/userspace-api/media/v4l/libv4l-introduction.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _libv4l-introduction: @@ -24,7 +18,6 @@ An example of using libv4l is provided by libv4l consists of 3 different libraries: - libv4lconvert ============= @@ -72,7 +65,6 @@ libv4lconvert/processing. These controls are stored application wide libv4lconvert/processing offers the actual video processing functionality. - libv4l1 ======= @@ -85,7 +77,6 @@ just pass calls through. Since those functions are emulations of the old V4L1 API, it shouldn't be used for new applications. - libv4l2 ======= @@ -112,7 +103,6 @@ available in the driver. :ref:`VIDIOC_ENUM_FMT <VIDIOC_ENUM_FMT>` keeps enumerating the hardware supported formats, plus the emulated formats offered by libv4l at the end. - .. _libv4l-ops: Libv4l device control functions @@ -122,17 +112,17 @@ The common file operation methods are provided by libv4l. Those functions operate just like the gcc function ``dup()`` and V4L2 functions -:c:func:`open() <v4l2-open>`, :c:func:`close() <v4l2-close>`, -:c:func:`ioctl() <v4l2-ioctl>`, :c:func:`read() <v4l2-read>`, -:c:func:`mmap() <v4l2-mmap>` and :c:func:`munmap() <v4l2-munmap>`: +:c:func:`open()`, :c:func:`close()`, +:c:func:`ioctl()`, :c:func:`read()`, +:c:func:`mmap()` and :c:func:`munmap()`: .. c:function:: int v4l2_open(const char *file, int oflag, ...) - operates like the :c:func:`open() <v4l2-open>` function. + operates like the :c:func:`open()` function. .. c:function:: int v4l2_close(int fd) - operates like the :c:func:`close() <v4l2-close>` function. + operates like the :c:func:`close()` function. .. c:function:: int v4l2_dup(int fd) @@ -140,19 +130,19 @@ V4L2 functions .. c:function:: int v4l2_ioctl (int fd, unsigned long int request, ...) - operates like the :c:func:`ioctl() <v4l2-ioctl>` function. + operates like the :c:func:`ioctl()` function. .. c:function:: int v4l2_read (int fd, void* buffer, size_t n) - operates like the :c:func:`read() <v4l2-read>` function. + operates like the :c:func:`read()` function. .. c:function:: void v4l2_mmap(void *start, size_t length, int prot, int flags, int fd, int64_t offset); - operates like the :c:func:`munmap() <v4l2-munmap>` function. + operates like the :c:func:`munmap()` function. .. c:function:: int v4l2_munmap(void *_start, size_t length); - operates like the :c:func:`munmap() <v4l2-munmap>` function. + operates like the :c:func:`munmap()` function. Those functions provide additional control: @@ -175,14 +165,13 @@ Those functions provide additional control: of the given v4l control id. when the cid does not exist, could not be accessed for some reason, or some error occurred 0 is returned. - v4l1compat.so wrapper library ============================= This library intercepts calls to -:c:func:`open() <v4l2-open>`, :c:func:`close() <v4l2-close>`, -:c:func:`ioctl() <v4l2-ioctl>`, :c:func:`mmap() <v4l2-mmap>` and -:c:func:`munmap() <v4l2-munmap>` +:c:func:`open()`, :c:func:`close()`, +:c:func:`ioctl()`, :c:func:`mmap()` and +:c:func:`munmap()` operations and redirects them to the libv4l counterparts, by using ``LD_PRELOAD=/usr/lib/v4l1compat.so``. It also emulates V4L1 calls via V4L2 API. diff --git a/Documentation/userspace-api/media/v4l/libv4l.rst b/Documentation/userspace-api/media/v4l/libv4l.rst index 5ea2016cac65..f446dd2d01ac 100644 --- a/Documentation/userspace-api/media/v4l/libv4l.rst +++ b/Documentation/userspace-api/media/v4l/libv4l.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _libv4l: diff --git a/Documentation/userspace-api/media/v4l/meta-formats.rst b/Documentation/userspace-api/media/v4l/meta-formats.rst index 7dcc4bacbb0c..fff25357fe86 100644 --- a/Documentation/userspace-api/media/v4l/meta-formats.rst +++ b/Documentation/userspace-api/media/v4l/meta-formats.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _meta-formats: @@ -21,6 +14,7 @@ These formats are used for the :ref:`metadata` interface only. pixfmt-meta-d4xx pixfmt-meta-intel-ipu3 + pixfmt-meta-rkisp1 pixfmt-meta-uvc pixfmt-meta-vsp1-hgo pixfmt-meta-vsp1-hgt diff --git a/Documentation/userspace-api/media/v4l/mmap.rst b/Documentation/userspace-api/media/v4l/mmap.rst index 9c44d05ebc3f..16b1e13b029f 100644 --- a/Documentation/userspace-api/media/v4l/mmap.rst +++ b/Documentation/userspace-api/media/v4l/mmap.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _mmap: @@ -42,22 +36,22 @@ This ioctl can also be used to change the number of buffers or to free the allocated memory, provided none of the buffers are still mapped. Before applications can access the buffers they must map them into their -address space with the :ref:`mmap() <func-mmap>` function. The +address space with the :c:func:`mmap()` function. The location of the buffers in device memory can be determined with the :ref:`VIDIOC_QUERYBUF` ioctl. In the single-planar API case, the ``m.offset`` and ``length`` returned in a struct :c:type:`v4l2_buffer` are passed as sixth and second -parameter to the :ref:`mmap() <func-mmap>` function. When using the +parameter to the :c:func:`mmap()` function. When using the multi-planar API, struct :c:type:`v4l2_buffer` contains an array of struct :c:type:`v4l2_plane` structures, each containing its own ``m.offset`` and ``length``. When using the multi-planar API, every plane of every buffer has to be mapped -separately, so the number of calls to :ref:`mmap() <func-mmap>` should +separately, so the number of calls to :c:func:`mmap()` should be equal to number of buffers times number of planes in each buffer. The offset and length values must not be modified. Remember, the buffers are allocated in physical memory, as opposed to virtual memory, which can be swapped out to disk. Applications should free the buffers as soon as -possible with the :ref:`munmap() <func-munmap>` function. +possible with the :c:func:`munmap()` function. Example: Mapping buffers in the single-planar API ================================================= @@ -129,7 +123,6 @@ Example: Mapping buffers in the single-planar API for (i = 0; i < reqbuf.count; i++) munmap(buffers[i].start, buffers[i].length); - Example: Mapping buffers in the multi-planar API ================================================ @@ -245,10 +238,10 @@ be determined at any time using the :ref:`VIDIOC_QUERYBUF` ioctl. Two methods exist to suspend execution of the application until one or more buffers can be dequeued. By default :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>` blocks when no buffer is in the outgoing queue. When the ``O_NONBLOCK`` -flag was given to the :ref:`open() <func-open>` function, +flag was given to the :c:func:`open()` function, :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>` returns immediately with an ``EAGAIN`` -error code when no buffer is available. The :ref:`select() <func-select>` -or :ref:`poll() <func-poll>` functions are always available. +error code when no buffer is available. The :c:func:`select()` +or :c:func:`poll()` functions are always available. To start and stop capturing or output applications call the :ref:`VIDIOC_STREAMON <VIDIOC_STREAMON>` and :ref:`VIDIOC_STREAMOFF @@ -266,15 +259,15 @@ Drivers implementing memory mapping I/O must support the <VIDIOC_QUERYBUF>`, :ref:`VIDIOC_QBUF <VIDIOC_QBUF>`, :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>`, :ref:`VIDIOC_STREAMON <VIDIOC_STREAMON>` and :ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>` ioctls, the :ref:`mmap() -<func-mmap>`, :ref:`munmap() <func-munmap>`, :ref:`select() -<func-select>` and :ref:`poll() <func-poll>` function. [#f3]_ +<func-mmap>`, :c:func:`munmap()`, :ref:`select() +<func-select>` and :c:func:`poll()` function. [#f3]_ [capture example] .. [#f1] One could use one file descriptor and set the buffer type field accordingly when calling :ref:`VIDIOC_QBUF` etc., - but it makes the :ref:`select() <func-select>` function ambiguous. We also + but it makes the :c:func:`select()` function ambiguous. We also like the clean approach of one file descriptor per logical stream. Video overlay for example is also a logical stream, although the CPU is not needed for continuous operation. @@ -287,6 +280,6 @@ and :ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>` ioctls, the :ref:`mmap() scatter-gather lists and the like. .. [#f3] - At the driver level :ref:`select() <func-select>` and :ref:`poll() <func-poll>` are - the same, and :ref:`select() <func-select>` is too important to be optional. + At the driver level :c:func:`select()` and :c:func:`poll()` are + the same, and :c:func:`select()` is too important to be optional. The rest should be evident. diff --git a/Documentation/userspace-api/media/v4l/nv12mt.svg b/Documentation/userspace-api/media/v4l/nv12mt.svg index d4bb4eb83f6a..30a15b5470be 100644 --- a/Documentation/userspace-api/media/v4l/nv12mt.svg +++ b/Documentation/userspace-api/media/v4l/nv12mt.svg @@ -1,31 +1,5 @@ <?xml version="1.0" encoding="UTF-8" standalone="no"?> -<!-- - This file is dual-licensed: you can use it either under the terms - of the GPL 2.0 or the GFDL 1.1+ license, at your option. Note that this - dual licensing only applies to this file, and not this project as a - whole. - - a) This file is free software; you can redistribute it and/or - modify it under the terms of the GNU General Public License as - published by the Free Software Foundation version 2 of - the License. - - This file is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - Or, alternatively, - - b) Permission is granted to copy, distribute and/or modify this - document under the terms of the GNU Free Documentation License, - Version 1.1 or any later version published by the Free Software - Foundation, with no Invariant Sections, no Front-Cover Texts - and no Back-Cover Texts. A copy of the license is included at - Documentation/userspace-api/media/fdl-appendix.rst. - - TODO: replace it to GPL-2.0 OR GFDL-1.1-or-later WITH no-invariant-sections ---> +<!-- SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later --> <svg xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:cc="http://creativecommons.org/ns#" diff --git a/Documentation/userspace-api/media/v4l/nv12mt_example.svg b/Documentation/userspace-api/media/v4l/nv12mt_example.svg index e5075af9f45a..d1e2023f4973 100644 --- a/Documentation/userspace-api/media/v4l/nv12mt_example.svg +++ b/Documentation/userspace-api/media/v4l/nv12mt_example.svg @@ -1,31 +1,5 @@ <?xml version="1.0" encoding="UTF-8" standalone="no"?> -<!-- - This file is dual-licensed: you can use it either under the terms - of the GPL 2.0 or the GFDL 1.1+ license, at your option. Note that this - dual licensing only applies to this file, and not this project as a - whole. - - a) This file is free software; you can redistribute it and/or - modify it under the terms of the GNU General Public License as - published by the Free Software Foundation version 2 of - the License. - - This file is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - Or, alternatively, - - b) Permission is granted to copy, distribute and/or modify this - document under the terms of the GNU Free Documentation License, - Version 1.1 or any later version published by the Free Software - Foundation, with no Invariant Sections, no Front-Cover Texts - and no Back-Cover Texts. A copy of the license is included at - Documentation/userspace-api/media/fdl-appendix.rst. - - TODO: replace it to GPL-2.0 OR GFDL-1.1-or-later WITH no-invariant-sections ---> +<!-- SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later --> <svg xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:cc="http://creativecommons.org/ns#" diff --git a/Documentation/userspace-api/media/v4l/open.rst b/Documentation/userspace-api/media/v4l/open.rst index 38046ef20141..18bfb9b8137d 100644 --- a/Documentation/userspace-api/media/v4l/open.rst +++ b/Documentation/userspace-api/media/v4l/open.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _open: @@ -13,22 +7,105 @@ Opening and Closing Devices *************************** +.. _v4l2_hardware_control: -Device Naming -============= +Controlling a hardware peripheral via V4L2 +========================================== + +Hardware that is supported using the V4L2 uAPI often consists of multiple +devices or peripherals, each of which have their own driver. + +The bridge driver exposes one or more V4L2 device nodes +(see :ref:`v4l2_device_naming`). + +There are other drivers providing support for other components of +the hardware, which may also expose device nodes, called V4L2 sub-devices. + +When such V4L2 sub-devices are exposed, they allow controlling those +other hardware components - usually connected via a serial bus (like +I²C, SMBus or SPI). Depending on the bridge driver, those sub-devices +can be controlled indirectly via the bridge driver or explicitly via +the :ref:`Media Controller <media_controller>` and via the +:ref:`V4L2 sub-devices <subdev>`. + +The devices that require the use of the +:ref:`Media Controller <media_controller>` are called **MC-centric** +devices. The devices that are fully controlled via V4L2 device nodes +are called **video-node-centric**. + +Userspace can check if a V4L2 hardware peripheral is MC-centric by +calling :ref:`VIDIOC_QUERYCAP` and checking the +:ref:`device_caps field <device-capabilities>`. + +If the device returns ``V4L2_CAP_IO_MC`` flag at ``device_caps``, +then it is MC-centric, otherwise, it is video-node-centric. + +It is required for MC-centric drivers to identify the V4L2 +sub-devices and to configure the pipelines via the +:ref:`media controller API <media_controller>` before using the peripheral. +Also, the sub-devices' configuration shall be controlled via the +:ref:`sub-device API <subdev>`. + +.. note:: + + A video-node-centric may still provide media-controller and + sub-device interfaces as well. + + However, in that case the media-controller and the sub-device + interfaces are read-only and just provide information about the + device. The actual configuration is done via the video nodes. + +.. _v4l2_device_naming: + +V4L2 Device Node Naming +======================= V4L2 drivers are implemented as kernel modules, loaded manually by the system administrator or automatically when a device is first discovered. -The driver modules plug into the "videodev" kernel module. It provides +The driver modules plug into the ``videodev`` kernel module. It provides helper functions and a common application interface specified in this document. Each driver thus loaded registers one or more device nodes with major -number 81 and a minor number between 0 and 255. Minor numbers are -allocated dynamically unless the kernel is compiled with the kernel -option CONFIG_VIDEO_FIXED_MINOR_RANGES. In that case minor numbers -are allocated in ranges depending on the device node type (video, radio, -etc.). +number 81. Minor numbers are allocated dynamically unless the kernel +is compiled with the kernel option CONFIG_VIDEO_FIXED_MINOR_RANGES. +In that case minor numbers are allocated in ranges depending on the +device node type. + +The device nodes supported by the Video4Linux subsystem are: + +======================== ==================================================== +Default device node name Usage +======================== ==================================================== +``/dev/videoX`` Video and metadata for capture/output devices +``/dev/vbiX`` Vertical blank data (i.e. closed captions, teletext) +``/dev/radioX`` Radio tuners and modulators +``/dev/swradioX`` Software Defined Radio tuners and modulators +``/dev/v4l-touchX`` Touch sensors +``/dev/v4l-subdevX`` Video sub-devices (used by sensors and other + components of the hardware peripheral)\ [#]_ +======================== ==================================================== + +Where ``X`` is a non-negative integer. + +.. note:: + + 1. The actual device node name is system-dependent, as udev rules may apply. + 2. There is no guarantee that ``X`` will remain the same for the same + device, as the number depends on the device driver's probe order. + If you need an unique name, udev default rules produce + ``/dev/v4l/by-id/`` and ``/dev/v4l/by-path/`` directories containing + links that can be used uniquely to identify a V4L2 device node:: + + $ tree /dev/v4l + /dev/v4l + ├── by-id + │  └── usb-OmniVision._USB_Camera-B4.04.27.1-video-index0 -> ../../video0 + └── by-path + └── pci-0000:00:14.0-usb-0:2:1.0-video-index0 -> ../../video0 + +.. [#] **V4L2 sub-device nodes** (e. g. ``/dev/v4l-subdevX``) use a different + set of system calls, as covered at :ref:`subdev`. Many drivers support "video_nr", "radio_nr" or "vbi_nr" module options to select specific video/radio/vbi node numbers. This allows the @@ -64,7 +141,6 @@ means applications cannot *reliably* scan for loaded or installed drivers. The user must enter a device name, or the application can try the conventional device names. - .. _related: Related Devices @@ -73,7 +149,7 @@ Related Devices Devices can support several functions. For example video capturing, VBI capturing and radio support. -The V4L2 API creates different nodes for each of these functions. +The V4L2 API creates different V4L2 device nodes for each of these functions. The V4L2 API was designed with the idea that one device node could support all functions. However, in practice this never worked: this @@ -81,19 +157,19 @@ support all functions. However, in practice this never worked: this support it and if they did it was certainly never tested. In addition, switching a device node between different functions only works when using the streaming I/O API, not with the -:ref:`read() <func-read>`/\ :ref:`write() <func-write>` API. +:c:func:`read()`/\ :c:func:`write()` API. -Today each device node supports just one function. +Today each V4L2 device node supports just one function. Besides video input or output the hardware may also support audio sampling or playback. If so, these functions are implemented as ALSA PCM devices with optional ALSA audio mixer devices. One problem with all these devices is that the V4L2 API makes no -provisions to find these related devices. Some really complex devices -use the Media Controller (see :ref:`media_controller`) which can be -used for this purpose. But most drivers do not use it, and while some -code exists that uses sysfs to discover related devices (see +provisions to find these related V4L2 device nodes. Some really complex +hardware use the Media Controller (see :ref:`media_controller`) which can +be used for this purpose. But several drivers do not use it, and while some +code exists that uses sysfs to discover related V4L2 device nodes (see libmedia_dev in the `v4l-utils <http://git.linuxtv.org/cgit.cgi/v4l-utils.git/>`__ git repository), there is no library yet that can provide a single API @@ -102,7 +178,6 @@ the Media Controller. If you want to work on this please write to the linux-media mailing list: `https://linuxtv.org/lists.php <https://linuxtv.org/lists.php>`__. - Multiple Opens ============== @@ -116,8 +191,8 @@ device should not change the state of the device. [#f2]_ Once an application has allocated the memory buffers needed for streaming data (by calling the :ref:`VIDIOC_REQBUFS` or :ref:`VIDIOC_CREATE_BUFS` ioctls, or -implicitly by calling the :ref:`read() <func-read>` or -:ref:`write() <func-write>` functions) that application (filehandle) +implicitly by calling the :c:func:`read()` or +:c:func:`write()` functions) that application (filehandle) becomes the owner of the device. It is no longer allowed to make changes that would affect the buffer sizes (e.g. by calling the :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctl) and other applications are @@ -130,7 +205,6 @@ requested type of data, and to change related properties, to this file descriptor. Applications can request additional access privileges using the priority mechanism described in :ref:`app-pri`. - Shared Data Streams =================== @@ -139,12 +213,11 @@ the same data stream on a device by copying buffers, time multiplexing or similar means. This is better handled by a proxy application in user space. - Functions ========= To open and close V4L2 devices applications use the -:ref:`open() <func-open>` and :ref:`close() <func-close>` function, +:c:func:`open()` and :c:func:`close()` function, respectively. Devices are programmed using the :ref:`ioctl() <func-ioctl>` function as explained in the following sections. @@ -152,7 +225,7 @@ sections. .. [#f1] There are still some old and obscure drivers that have not been updated to allow for multiple opens. This implies that for such - drivers :ref:`open() <func-open>` can return an ``EBUSY`` error code + drivers :c:func:`open()` can return an ``EBUSY`` error code when the device is already in use. .. [#f2] diff --git a/Documentation/userspace-api/media/v4l/pixfmt-bayer.rst b/Documentation/userspace-api/media/v4l/pixfmt-bayer.rst index be9a8385ebc1..2500413e5f43 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-bayer.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-bayer.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _pixfmt-bayer: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-compressed.rst b/Documentation/userspace-api/media/v4l/pixfmt-compressed.rst index 3828bb79225d..d585909bc4e2 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-compressed.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-compressed.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later ****************** Compressed Formats diff --git a/Documentation/userspace-api/media/v4l/pixfmt-grey.rst b/Documentation/userspace-api/media/v4l/pixfmt-grey.rst index 7b03db3393be..121365b03c57 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-grey.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-grey.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-GREY: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-indexed.rst b/Documentation/userspace-api/media/v4l/pixfmt-indexed.rst index d0d46ed27260..5bd4a47c5854 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-indexed.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-indexed.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _pixfmt-indexed: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-intro.rst b/Documentation/userspace-api/media/v4l/pixfmt-intro.rst index af870895f653..14239ee826bf 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-intro.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-intro.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later ********************** Standard Image Formats diff --git a/Documentation/userspace-api/media/v4l/pixfmt-inzi.rst b/Documentation/userspace-api/media/v4l/pixfmt-inzi.rst index f85cccb71741..3115c8f6a842 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-inzi.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-inzi.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-INZI: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-m420.rst b/Documentation/userspace-api/media/v4l/pixfmt-m420.rst index 5180bbe16c6e..13cf36a8cd5c 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-m420.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-m420.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-M420: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-meta-d4xx.rst b/Documentation/userspace-api/media/v4l/pixfmt-meta-d4xx.rst index 4eaf2f9086a9..4e437ba97a0e 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-meta-d4xx.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-meta-d4xx.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _v4l2-meta-fmt-d4xx: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-meta-intel-ipu3.rst b/Documentation/userspace-api/media/v4l/pixfmt-meta-intel-ipu3.rst index 97a9a2925671..5f33d35532ef 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-meta-intel-ipu3.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-meta-intel-ipu3.rst @@ -1,27 +1,4 @@ -.. This file is dual-licensed: you can use it either under the terms -.. of the GPL 2.0 or the GFDL 1.1+ license, at your option. Note that this -.. dual licensing only applies to this file, and not this project as a -.. whole. -.. -.. a) This file is free software; you can redistribute it and/or -.. modify it under the terms of the GNU General Public License version -.. 2.0 as published by the Free Software Foundation. -.. -.. This file is distributed in the hope that it will be useful, -.. but WITHOUT ANY WARRANTY; without even the implied warranty of -.. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -.. GNU General Public License version 2.0 for more details. -.. -.. Or, alternatively, -.. -.. b) Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GPL-2.0 OR GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later .. _v4l2-meta-fmt-params: .. _v4l2-meta-fmt-stat-3a: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-meta-rkisp1.rst b/Documentation/userspace-api/media/v4l/pixfmt-meta-rkisp1.rst new file mode 100644 index 000000000000..7e43837ed260 --- /dev/null +++ b/Documentation/userspace-api/media/v4l/pixfmt-meta-rkisp1.rst @@ -0,0 +1,49 @@ +.. SPDX-License-Identifier: GPL-2.0 + +.. _v4l2-meta-fmt-params-rkisp1: +.. _v4l2-meta-fmt-stat-rkisp1: + +***************************************************************************** +V4L2_META_FMT_RK_ISP1_PARAMS ('rk1p'), V4L2_META_FMT_RK_ISP1_STAT_3A ('rk1s') +***************************************************************************** + +Configuration parameters +======================== + +The configuration parameters are passed to the +:ref:`rkisp1_params <rkisp1_params>` metadata output video node, using +the :c:type:`v4l2_meta_format` interface. The buffer contains +a single instance of the C structure :c:type:`rkisp1_params_cfg` defined in +``rkisp1-config.h``. So the structure can be obtained from the buffer by: + +.. code-block:: c + + struct rkisp1_params_cfg *params = (struct rkisp1_params_cfg*) buffer; + +.. rkisp1_stat_buffer + +3A and histogram statistics +=========================== + +The ISP1 device collects different statistics over an input Bayer frame. +Those statistics are obtained from the :ref:`rkisp1_stats <rkisp1_stats>` +metadata capture video node, +using the :c:type:`v4l2_meta_format` interface. The buffer contains a single +instance of the C structure :c:type:`rkisp1_stat_buffer` defined in +``rkisp1-config.h``. So the structure can be obtained from the buffer by: + +.. code-block:: c + + struct rkisp1_stat_buffer *stats = (struct rkisp1_stat_buffer*) buffer; + +The statistics collected are Exposure, AWB (Auto-white balance), Histogram and +AF (Auto-focus). See :c:type:`rkisp1_stat_buffer` for details of the statistics. + +The 3A statistics and configuration parameters described here are usually +consumed and produced by dedicated user space libraries that comprise the +important tuning tools using software control loop. + +rkisp1 uAPI data types +====================== + +.. kernel-doc:: drivers/staging/media/rkisp1/uapi/rkisp1-config.h diff --git a/Documentation/userspace-api/media/v4l/pixfmt-meta-uvc.rst b/Documentation/userspace-api/media/v4l/pixfmt-meta-uvc.rst index debc50285a25..784346d14bbd 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-meta-uvc.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-meta-uvc.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _v4l2-meta-fmt-uvc: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-meta-vivid.rst b/Documentation/userspace-api/media/v4l/pixfmt-meta-vivid.rst index 34a2382ef91c..7173e2c3e245 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-meta-vivid.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-meta-vivid.rst @@ -1,28 +1,4 @@ -.. This file is dual-licensed: you can use it either under the terms -.. of the GPL 2.0 or the GFDL 1.1+ license, at your option. Note that this -.. dual licensing only applies to this file, and not this project as a -.. whole. -.. -.. a) This file is free software; you can redistribute it and/or -.. modify it under the terms of the GNU General Public License as -.. published by the Free Software Foundation version 2 of -.. the License. -.. -.. This file is distributed in the hope that it will be useful, -.. but WITHOUT ANY WARRANTY; without even the implied warranty of -.. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -.. GNU General Public License for more details. -.. -.. Or, alternatively, -.. -.. b) Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GPL-2.0 OR GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later .. _v4l2-meta-fmt-vivid: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-meta-vsp1-hgo.rst b/Documentation/userspace-api/media/v4l/pixfmt-meta-vsp1-hgo.rst index b780e447dd4b..8d886feb180c 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-meta-vsp1-hgo.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-meta-vsp1-hgo.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _v4l2-meta-fmt-vsp1-hgo: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-meta-vsp1-hgt.rst b/Documentation/userspace-api/media/v4l/pixfmt-meta-vsp1-hgt.rst index e165320cc1ff..d8830ff605de 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-meta-vsp1-hgt.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-meta-vsp1-hgt.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _v4l2-meta-fmt-vsp1-hgt: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-nv12.rst b/Documentation/userspace-api/media/v4l/pixfmt-nv12.rst index 19d47b38e02a..dd2f38129fe6 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-nv12.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-nv12.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-NV12: .. _V4L2-PIX-FMT-NV21: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-nv12m.rst b/Documentation/userspace-api/media/v4l/pixfmt-nv12m.rst index 115ea603c13f..250f8b977605 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-nv12m.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-nv12m.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-NV12M: .. _v4l2-pix-fmt-nv12mt-16x16: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-nv12mt.rst b/Documentation/userspace-api/media/v4l/pixfmt-nv12mt.rst index daac1c16d4f2..46f63d793ec5 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-nv12mt.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-nv12mt.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-NV12MT: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-nv16.rst b/Documentation/userspace-api/media/v4l/pixfmt-nv16.rst index 977636fc98d6..22295fc0c359 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-nv16.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-nv16.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-NV16: .. _V4L2-PIX-FMT-NV61: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-nv16m.rst b/Documentation/userspace-api/media/v4l/pixfmt-nv16m.rst index cf33942d942d..812bf2ccabf0 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-nv16m.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-nv16m.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-NV16M: .. _v4l2-pix-fmt-nv61m: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-nv24.rst b/Documentation/userspace-api/media/v4l/pixfmt-nv24.rst index c6fb97bd0472..bf1b94062fc2 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-nv24.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-nv24.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-NV24: .. _V4L2-PIX-FMT-NV42: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-packed-hsv.rst b/Documentation/userspace-api/media/v4l/pixfmt-packed-hsv.rst index b8c9b0225eea..dd89860f50e0 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-packed-hsv.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-packed-hsv.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _packed-hsv: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-packed-yuv.rst b/Documentation/userspace-api/media/v4l/pixfmt-packed-yuv.rst index bbd4bd094deb..84262208dd1c 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-packed-yuv.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-packed-yuv.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _packed-yuv: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst b/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst index 59b9e7238f90..c9231e18859b 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _pixfmt-reserved: @@ -263,20 +256,3 @@ please make a proposal on the linux-media mailing list. of tiles, resulting in 32-aligned resolutions for the luminance plane and 16-aligned resolutions for the chrominance plane (with 2x2 subsampling). - -.. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| - -.. _format-flags: - -.. flat-table:: Format Flags - :header-rows: 0 - :stub-columns: 0 - :widths: 3 1 4 - - * - ``V4L2_PIX_FMT_FLAG_PREMUL_ALPHA`` - - 0x00000001 - - The color values are premultiplied by the alpha channel value. For - example, if a light blue pixel with 50% transparency was described - by RGBA values (128, 192, 255, 128), the same pixel described with - premultiplied colors would be described by RGBA values (64, 96, - 128, 128) diff --git a/Documentation/userspace-api/media/v4l/pixfmt-rgb.rst b/Documentation/userspace-api/media/v4l/pixfmt-rgb.rst index 89cc2a37b285..9d827097c1d9 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-rgb.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-rgb.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _pixfmt-rgb: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-sdr-cs08.rst b/Documentation/userspace-api/media/v4l/pixfmt-sdr-cs08.rst index 13f3908d162a..bd6ee6111de4 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-sdr-cs08.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-sdr-cs08.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _v4l2-sdr-fmt-cs8: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-sdr-cs14le.rst b/Documentation/userspace-api/media/v4l/pixfmt-sdr-cs14le.rst index 41e5b990d499..ea21b288d357 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-sdr-cs14le.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-sdr-cs14le.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-SDR-FMT-CS14LE: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-sdr-cu08.rst b/Documentation/userspace-api/media/v4l/pixfmt-sdr-cu08.rst index 1085b5ad8eb7..45fce09d85ff 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-sdr-cu08.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-sdr-cu08.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _v4l2-sdr-fmt-cu8: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-sdr-cu16le.rst b/Documentation/userspace-api/media/v4l/pixfmt-sdr-cu16le.rst index 9772b30bda95..7f4242f8da6f 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-sdr-cu16le.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-sdr-cu16le.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-SDR-FMT-CU16LE: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-sdr-pcu16be.rst b/Documentation/userspace-api/media/v4l/pixfmt-sdr-pcu16be.rst index 53a0a862f33a..a4d4b70ece63 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-sdr-pcu16be.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-sdr-pcu16be.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-SDR-FMT-PCU16BE: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-sdr-pcu18be.rst b/Documentation/userspace-api/media/v4l/pixfmt-sdr-pcu18be.rst index 7f2d2545fb04..3db690bd683a 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-sdr-pcu18be.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-sdr-pcu18be.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-SDR-FMT-PCU18BE: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-sdr-pcu20be.rst b/Documentation/userspace-api/media/v4l/pixfmt-sdr-pcu20be.rst index 9f3d67b4e94c..485343cdf150 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-sdr-pcu20be.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-sdr-pcu20be.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-SDR-FMT-PCU20BE: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-sdr-ru12le.rst b/Documentation/userspace-api/media/v4l/pixfmt-sdr-ru12le.rst index c9cde8d425f7..2ad4706bfc7a 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-sdr-ru12le.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-sdr-ru12le.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-SDR-FMT-RU12LE: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-srggb10-ipu3.rst b/Documentation/userspace-api/media/v4l/pixfmt-srggb10-ipu3.rst index 5afa02a66698..15f1900cd914 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-srggb10-ipu3.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-srggb10-ipu3.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _v4l2-pix-fmt-ipu3-sbggr10: .. _v4l2-pix-fmt-ipu3-sgbrg10: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-srggb10.rst b/Documentation/userspace-api/media/v4l/pixfmt-srggb10.rst index 37cc1bb8241f..a66414ab4291 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-srggb10.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-srggb10.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-SRGGB10: .. _v4l2-pix-fmt-sbggr10: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-srggb10alaw8.rst b/Documentation/userspace-api/media/v4l/pixfmt-srggb10alaw8.rst index f1b8627f0141..a5ae1f099e68 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-srggb10alaw8.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-srggb10alaw8.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-SBGGR10ALAW8: .. _v4l2-pix-fmt-sgbrg10alaw8: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-srggb10dpcm8.rst b/Documentation/userspace-api/media/v4l/pixfmt-srggb10dpcm8.rst index 9814c4ffac68..f0544c6f4580 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-srggb10dpcm8.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-srggb10dpcm8.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-SBGGR10DPCM8: .. _v4l2-pix-fmt-sgbrg10dpcm8: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-srggb10p.rst b/Documentation/userspace-api/media/v4l/pixfmt-srggb10p.rst index 76a4d278e640..dc52e827b5d3 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-srggb10p.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-srggb10p.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-SRGGB10P: .. _v4l2-pix-fmt-sbggr10p: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-srggb12.rst b/Documentation/userspace-api/media/v4l/pixfmt-srggb12.rst index 98ae80b968ae..15c34e1e4835 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-srggb12.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-srggb12.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-SRGGB12: .. _v4l2-pix-fmt-sbggr12: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-srggb12p.rst b/Documentation/userspace-api/media/v4l/pixfmt-srggb12p.rst index 7309dd7fa60f..a2f8ebfceb84 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-srggb12p.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-srggb12p.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-SRGGB12P: .. _v4l2-pix-fmt-sbggr12p: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-srggb14.rst b/Documentation/userspace-api/media/v4l/pixfmt-srggb14.rst index a4c7a392fe7f..7e5d45f30cab 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-srggb14.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-srggb14.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-SRGGB14: .. _v4l2-pix-fmt-sbggr14: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-srggb14p.rst b/Documentation/userspace-api/media/v4l/pixfmt-srggb14p.rst index e2f5a2b36092..e25baedfca77 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-srggb14p.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-srggb14p.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-SRGGB14P: .. _v4l2-pix-fmt-sbggr14p: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-srggb16.rst b/Documentation/userspace-api/media/v4l/pixfmt-srggb16.rst index 885f0d1f331d..93a210e22592 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-srggb16.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-srggb16.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-SRGGB16: .. _v4l2-pix-fmt-sbggr16: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-srggb8.rst b/Documentation/userspace-api/media/v4l/pixfmt-srggb8.rst index c275e6ef09f9..81e72f115994 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-srggb8.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-srggb8.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-SRGGB8: .. _v4l2-pix-fmt-sbggr8: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-tch-td08.rst b/Documentation/userspace-api/media/v4l/pixfmt-tch-td08.rst index 165c9be2bfc5..ec89f43c60ec 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-tch-td08.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-tch-td08.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-TCH-FMT-DELTA-TD08: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-tch-td16.rst b/Documentation/userspace-api/media/v4l/pixfmt-tch-td16.rst index 6dca01182175..7b59a6424243 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-tch-td16.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-tch-td16.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-TCH-FMT-DELTA-TD16: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-tch-tu08.rst b/Documentation/userspace-api/media/v4l/pixfmt-tch-tu08.rst index f1380b72977f..63c5264b8668 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-tch-tu08.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-tch-tu08.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-TCH-FMT-TU08: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-tch-tu16.rst b/Documentation/userspace-api/media/v4l/pixfmt-tch-tu16.rst index 2b9e1b15abcf..ade618a037a8 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-tch-tu16.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-tch-tu16.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-TCH-FMT-TU16: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-uv8.rst b/Documentation/userspace-api/media/v4l/pixfmt-uv8.rst index a36c1a4d64a4..ff1d73ef5dba 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-uv8.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-uv8.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-UV8: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-uyvy.rst b/Documentation/userspace-api/media/v4l/pixfmt-uyvy.rst index 776cb37f76f1..bae975fb14f6 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-uyvy.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-uyvy.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-UYVY: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-v4l2-mplane.rst b/Documentation/userspace-api/media/v4l/pixfmt-v4l2-mplane.rst index 444b4082684c..977facc3a1f4 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-v4l2-mplane.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-v4l2-mplane.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later ****************************** Multi-planar format structures @@ -105,29 +98,21 @@ describing all planes of that format. * - __u8 - ``ycbcr_enc`` - Y'CbCr encoding, from enum :c:type:`v4l2_ycbcr_encoding`. - This information supplements the ``colorspace`` and must be set by - the driver for capture streams and by the application for output - streams, see :ref:`colorspaces`. + See struct :c:type:`v4l2_pix_format`. * - __u8 - ``hsv_enc`` - HSV encoding, from enum :c:type:`v4l2_hsv_encoding`. - This information supplements the ``colorspace`` and must be set by - the driver for capture streams and by the application for output - streams, see :ref:`colorspaces`. + See struct :c:type:`v4l2_pix_format`. * - } - * - __u8 - ``quantization`` - Quantization range, from enum :c:type:`v4l2_quantization`. - This information supplements the ``colorspace`` and must be set by - the driver for capture streams and by the application for output - streams, see :ref:`colorspaces`. + See struct :c:type:`v4l2_pix_format`. * - __u8 - ``xfer_func`` - Transfer function, from enum :c:type:`v4l2_xfer_func`. - This information supplements the ``colorspace`` and must be set by - the driver for capture streams and by the application for output - streams, see :ref:`colorspaces`. + See struct :c:type:`v4l2_pix_format`. * - __u8 - ``reserved[7]`` - Reserved for future extensions. Should be zeroed by drivers and diff --git a/Documentation/userspace-api/media/v4l/pixfmt-v4l2.rst b/Documentation/userspace-api/media/v4l/pixfmt-v4l2.rst index e0ee2823ab1f..71e828093310 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-v4l2.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-v4l2.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later ****************************** Single-planar format structure @@ -116,7 +109,14 @@ Single-planar format structure - Image colorspace, from enum :c:type:`v4l2_colorspace`. This information supplements the ``pixelformat`` and must be set by the driver for capture streams and by the application for - output streams, see :ref:`colorspaces`. + output streams, see :ref:`colorspaces`. If the application sets the + flag ``V4L2_PIX_FMT_FLAG_SET_CSC`` then the application can set + this field for a capture stream to request a specific colorspace + for the captured image data. If the driver cannot handle requested + conversion, it will return another supported colorspace. + The driver indicates that colorspace conversion is supported by setting + the flag V4L2_FMT_FLAG_CSC_COLORSPACE in the corresponding struct + :c:type:`v4l2_fmtdesc` during enumeration. See :ref:`fmtdesc-flags`. * - __u32 - ``priv`` - This field indicates whether the remaining fields of the @@ -153,13 +153,29 @@ Single-planar format structure - Y'CbCr encoding, from enum :c:type:`v4l2_ycbcr_encoding`. This information supplements the ``colorspace`` and must be set by the driver for capture streams and by the application for output - streams, see :ref:`colorspaces`. + streams, see :ref:`colorspaces`. If the application sets the + flag ``V4L2_PIX_FMT_FLAG_SET_CSC`` then the application can set + this field for a capture stream to request a specific Y'CbCr encoding + for the captured image data. If the driver cannot handle requested + conversion, it will return another supported encoding. + This field is ignored for HSV pixelformats. The driver indicates that + ycbcr_enc conversion is supported by setting the flag + V4L2_FMT_FLAG_CSC_YCBCR_ENC in the corresponding struct + :c:type:`v4l2_fmtdesc` during enumeration. See :ref:`fmtdesc-flags`. * - __u32 - ``hsv_enc`` - HSV encoding, from enum :c:type:`v4l2_hsv_encoding`. This information supplements the ``colorspace`` and must be set by the driver for capture streams and by the application for output - streams, see :ref:`colorspaces`. + streams, see :ref:`colorspaces`. If the application sets the flag + ``V4L2_PIX_FMT_FLAG_SET_CSC`` then the application can set this + field for a capture stream to request a specific HSV encoding for the + captured image data. If the driver cannot handle requested + conversion, it will return another supported encoding. + This field is ignored for non-HSV pixelformats. The driver indicates + that hsv_enc conversion is supported by setting the flag + V4L2_FMT_FLAG_CSC_HSV_ENC in the corresponding struct + :c:type:`v4l2_fmtdesc` during enumeration. See :ref:`fmtdesc-flags`. * - } - * - __u32 @@ -167,10 +183,58 @@ Single-planar format structure - Quantization range, from enum :c:type:`v4l2_quantization`. This information supplements the ``colorspace`` and must be set by the driver for capture streams and by the application for output - streams, see :ref:`colorspaces`. + streams, see :ref:`colorspaces`. If the application sets the flag + ``V4L2_PIX_FMT_FLAG_SET_CSC`` then the application can set + this field for a capture stream to request a specific quantization + range for the captured image data. If the driver cannot handle requested + conversion, it will return another supported quantization. + The driver indicates that quantization conversion is supported by setting + the flag V4L2_FMT_FLAG_CSC_QUANTIZATION in the corresponding struct + :c:type:`v4l2_fmtdesc` during enumeration. See :ref:`fmtdesc-flags`. * - __u32 - ``xfer_func`` - Transfer function, from enum :c:type:`v4l2_xfer_func`. This information supplements the ``colorspace`` and must be set by the driver for capture streams and by the application for output - streams, see :ref:`colorspaces`. + streams, see :ref:`colorspaces`. If the application sets the flag + ``V4L2_PIX_FMT_FLAG_SET_CSC`` then the application can set + this field for a capture stream to request a specific transfer function + for the captured image data. If the driver cannot handle requested + conversion, it will return another supported transfer function. + The driver indicates that xfer_func conversion is supported by setting + the flag V4L2_FMT_FLAG_CSC_XFER_FUNC in the corresponding struct + :c:type:`v4l2_fmtdesc` during enumeration. See :ref:`fmtdesc-flags`. + +.. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| + +.. _format-flags: + +.. flat-table:: Format Flags + :header-rows: 0 + :stub-columns: 0 + :widths: 3 1 4 + + * - ``V4L2_PIX_FMT_FLAG_PREMUL_ALPHA`` + - 0x00000001 + - The color values are premultiplied by the alpha channel value. For + example, if a light blue pixel with 50% transparency was described + by RGBA values (128, 192, 255, 128), the same pixel described with + premultiplied colors would be described by RGBA values (64, 96, + 128, 128) + * .. _`v4l2-pix-fmt-flag-set-csc`: + + - ``V4L2_PIX_FMT_FLAG_SET_CSC`` + - 0x00000002 + - Set by the application. It is only used for capture and is + ignored for output streams. If set, then request the device to do + colorspace conversion from the received colorspace to the requested + colorspace values. If the colorimetry field (``colorspace``, ``xfer_func``, + ``ycbcr_enc``, ``hsv_enc`` or ``quantization``) is set to ``*_DEFAULT``, + then that colorimetry setting will remain unchanged from what was received. + So in order to change the quantization, only the ``quantization`` field shall + be set to non default value (``V4L2_QUANTIZATION_FULL_RANGE`` or + ``V4L2_QUANTIZATION_LIM_RANGE``) and all other colorimetry fields shall + be set to ``*_DEFAULT``. + + To check which conversions are supported by the hardware for the current + pixel format, see :ref:`fmtdesc-flags`. diff --git a/Documentation/userspace-api/media/v4l/pixfmt-vyuy.rst b/Documentation/userspace-api/media/v4l/pixfmt-vyuy.rst index 6cd574e78e4c..aff8588b67a9 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-vyuy.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-vyuy.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-VYUY: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-y10.rst b/Documentation/userspace-api/media/v4l/pixfmt-y10.rst index dfb352ae6784..05f018dd883f 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-y10.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-y10.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-Y10: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-y10b.rst b/Documentation/userspace-api/media/v4l/pixfmt-y10b.rst index b5d89d6d5c52..38d353b37df9 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-y10b.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-y10b.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-Y10BPACK: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-y10p.rst b/Documentation/userspace-api/media/v4l/pixfmt-y10p.rst index ffb6e1631b78..dd20d3438732 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-y10p.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-y10p.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-Y10P: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-y12.rst b/Documentation/userspace-api/media/v4l/pixfmt-y12.rst index 4226c49232de..20e12a18da72 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-y12.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-y12.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-Y12: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-y12i.rst b/Documentation/userspace-api/media/v4l/pixfmt-y12i.rst index b4752754337b..d9b539381d74 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-y12i.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-y12i.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-Y12I: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-y14.rst b/Documentation/userspace-api/media/v4l/pixfmt-y14.rst index d702b6549160..2a4826b77105 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-y14.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-y14.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-Y14: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-y16-be.rst b/Documentation/userspace-api/media/v4l/pixfmt-y16-be.rst index f4eda7b95b51..6d70cd78cbf6 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-y16-be.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-y16-be.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-Y16-BE: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-y16.rst b/Documentation/userspace-api/media/v4l/pixfmt-y16.rst index a092b0a5ff12..398ad8ba5d64 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-y16.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-y16.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-Y16: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-y41p.rst b/Documentation/userspace-api/media/v4l/pixfmt-y41p.rst index 211afd7593cc..d14cedf8f317 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-y41p.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-y41p.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-Y41P: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-y8i.rst b/Documentation/userspace-api/media/v4l/pixfmt-y8i.rst index 4248c6f735b7..770ed4749c14 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-y8i.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-y8i.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-Y8I: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv410.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv410.rst index 1d20115f2b1d..de2e519adc60 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv410.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv410.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-YVU410: .. _v4l2-pix-fmt-yuv410: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv411p.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv411p.rst index 967ba7ce41a2..998aa9b1328f 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv411p.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv411p.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-YUV411P: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv420.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv420.rst index 7cb685cc8289..f1c7baf32685 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv420.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv420.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-YVU420: .. _V4L2-PIX-FMT-YUV420: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv420m.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv420m.rst index 80c14d4f5acb..cd20a57e0621 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv420m.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv420m.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-YUV420M: .. _v4l2-pix-fmt-yvu420m: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv422m.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv422m.rst index 29b78480ccad..32bf15e1426e 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv422m.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv422m.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-YUV422M: .. _v4l2-pix-fmt-yvu422m: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv422p.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv422p.rst index 73fde222d820..b178be558361 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv422p.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv422p.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-YUV422P: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv444m.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv444m.rst index 7073ac7f842d..90bdee2e2b0d 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv444m.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv444m.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-YUV444M: .. _v4l2-pix-fmt-yvu444m: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuyv.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuyv.rst index fe70e007787d..ca073a5098a9 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-yuyv.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuyv.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-YUYV: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yvyu.rst b/Documentation/userspace-api/media/v4l/pixfmt-yvyu.rst index 96c1b537d5a0..81ebec525ae5 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-yvyu.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-yvyu.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-YVYU: diff --git a/Documentation/userspace-api/media/v4l/pixfmt-z16.rst b/Documentation/userspace-api/media/v4l/pixfmt-z16.rst index fe2fb21edeea..54a8cd723d1a 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-z16.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-z16.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _V4L2-PIX-FMT-Z16: diff --git a/Documentation/userspace-api/media/v4l/pixfmt.rst b/Documentation/userspace-api/media/v4l/pixfmt.rst index 70ca3a5c2cf1..11dab4a90630 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _pixfmt: diff --git a/Documentation/userspace-api/media/v4l/planar-apis.rst b/Documentation/userspace-api/media/v4l/planar-apis.rst index 6247b0c4ab4d..9207ce4283df 100644 --- a/Documentation/userspace-api/media/v4l/planar-apis.rst +++ b/Documentation/userspace-api/media/v4l/planar-apis.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _planar-apis: diff --git a/Documentation/userspace-api/media/v4l/querycap.rst b/Documentation/userspace-api/media/v4l/querycap.rst index 35fba2a9e09b..15a90271af45 100644 --- a/Documentation/userspace-api/media/v4l/querycap.rst +++ b/Documentation/userspace-api/media/v4l/querycap.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _querycap: diff --git a/Documentation/userspace-api/media/v4l/rw.rst b/Documentation/userspace-api/media/v4l/rw.rst index ce2768c994d0..64b85fb2a328 100644 --- a/Documentation/userspace-api/media/v4l/rw.rst +++ b/Documentation/userspace-api/media/v4l/rw.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _rw: @@ -13,8 +7,8 @@ Read/Write ********** -Input and output devices support the :ref:`read() <func-read>` and -:ref:`write() <func-write>` function, respectively, when the +Input and output devices support the :c:func:`read()` and +:c:func:`write()` function, respectively, when the ``V4L2_CAP_READWRITE`` flag in the ``capabilities`` field of struct :c:type:`v4l2_capability` returned by the :ref:`VIDIOC_QUERYCAP` ioctl is set. @@ -29,18 +23,17 @@ However this is also the simplest I/O method, requiring little or no setup to exchange data. It permits command line stunts like this (the vidctrl tool is fictitious): - .. code-block:: none $ vidctrl /dev/video --input=0 --format=YUYV --size=352x288 $ dd if=/dev/video of=myimage.422 bs=202752 count=1 -To read from the device applications use the :ref:`read() <func-read>` -function, to write the :ref:`write() <func-write>` function. Drivers +To read from the device applications use the :c:func:`read()` +function, to write the :c:func:`write()` function. Drivers must implement one I/O method if they exchange data with applications, but it need not be this. [#f1]_ When reading or writing is supported, the -driver must also support the :ref:`select() <func-select>` and -:ref:`poll() <func-poll>` function. [#f2]_ +driver must also support the :c:func:`select()` and +:c:func:`poll()` function. [#f2]_ .. [#f1] It would be desirable if applications could depend on drivers @@ -50,5 +43,5 @@ driver must also support the :ref:`select() <func-select>` and capturing still images. .. [#f2] - At the driver level :ref:`select() <func-select>` and :ref:`poll() <func-poll>` are - the same, and :ref:`select() <func-select>` is too important to be optional. + At the driver level :c:func:`select()` and :c:func:`poll()` are + the same, and :c:func:`select()` is too important to be optional. diff --git a/Documentation/userspace-api/media/v4l/sdr-formats.rst b/Documentation/userspace-api/media/v4l/sdr-formats.rst index b7a1be75251f..d8bdfdb56911 100644 --- a/Documentation/userspace-api/media/v4l/sdr-formats.rst +++ b/Documentation/userspace-api/media/v4l/sdr-formats.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _sdr-formats: diff --git a/Documentation/userspace-api/media/v4l/selection-api-configuration.rst b/Documentation/userspace-api/media/v4l/selection-api-configuration.rst index 67ff67fd734e..37617eda2fa6 100644 --- a/Documentation/userspace-api/media/v4l/selection-api-configuration.rst +++ b/Documentation/userspace-api/media/v4l/selection-api-configuration.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later ************* Configuration diff --git a/Documentation/userspace-api/media/v4l/selection-api-examples.rst b/Documentation/userspace-api/media/v4l/selection-api-examples.rst index 2f4027211129..5f8e8a1f59d7 100644 --- a/Documentation/userspace-api/media/v4l/selection-api-examples.rst +++ b/Documentation/userspace-api/media/v4l/selection-api-examples.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later ******** Examples diff --git a/Documentation/userspace-api/media/v4l/selection-api-intro.rst b/Documentation/userspace-api/media/v4l/selection-api-intro.rst index 0994ca25be5e..6534854ae9f7 100644 --- a/Documentation/userspace-api/media/v4l/selection-api-intro.rst +++ b/Documentation/userspace-api/media/v4l/selection-api-intro.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later ************ Introduction diff --git a/Documentation/userspace-api/media/v4l/selection-api-targets.rst b/Documentation/userspace-api/media/v4l/selection-api-targets.rst index 56eab969c9d8..50fdadd5b307 100644 --- a/Documentation/userspace-api/media/v4l/selection-api-targets.rst +++ b/Documentation/userspace-api/media/v4l/selection-api-targets.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later ***************** Selection targets diff --git a/Documentation/userspace-api/media/v4l/selection-api-vs-crop-api.rst b/Documentation/userspace-api/media/v4l/selection-api-vs-crop-api.rst index a9360a000022..f57b9180012c 100644 --- a/Documentation/userspace-api/media/v4l/selection-api-vs-crop-api.rst +++ b/Documentation/userspace-api/media/v4l/selection-api-vs-crop-api.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _selection-vs-crop: diff --git a/Documentation/userspace-api/media/v4l/selection-api.rst b/Documentation/userspace-api/media/v4l/selection-api.rst index b86e387721df..0360743746dc 100644 --- a/Documentation/userspace-api/media/v4l/selection-api.rst +++ b/Documentation/userspace-api/media/v4l/selection-api.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _selection-api: diff --git a/Documentation/userspace-api/media/v4l/selection.svg b/Documentation/userspace-api/media/v4l/selection.svg index c0e00ab2ae6b..6305b53b8e54 100644 --- a/Documentation/userspace-api/media/v4l/selection.svg +++ b/Documentation/userspace-api/media/v4l/selection.svg @@ -1,31 +1,5 @@ <?xml version="1.0" encoding="UTF-8"?> -<!-- - This file is dual-licensed: you can use it either under the terms - of the GPL 2.0 or the GFDL 1.1+ license, at your option. Note that this - dual licensing only applies to this file, and not this project as a - whole. - - a) This file is free software; you can redistribute it and/or - modify it under the terms of the GNU General Public License as - published by the Free Software Foundation version 2 of - the License. - - This file is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - Or, alternatively, - - b) Permission is granted to copy, distribute and/or modify this - document under the terms of the GNU Free Documentation License, - Version 1.1 or any later version published by the Free Software - Foundation, with no Invariant Sections, no Front-Cover Texts - and no Back-Cover Texts. A copy of the license is included at - Documentation/userspace-api/media/fdl-appendix.rst. - - TODO: replace it to GPL-2.0 OR GFDL-1.1-or-later WITH no-invariant-sections ---> +<!-- SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later --> <svg enable-background="new" version="1" viewBox="0 0 4226.3 1686.8" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <defs> <pattern id="ig" xlink:href="#ka" patternTransform="matrix(5.4432 0 0 10.1 1722.4 161.06)"/> diff --git a/Documentation/userspace-api/media/v4l/selections-common.rst b/Documentation/userspace-api/media/v4l/selections-common.rst index d5ea05869a61..322b39cf0eba 100644 --- a/Documentation/userspace-api/media/v4l/selections-common.rst +++ b/Documentation/userspace-api/media/v4l/selections-common.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _v4l2-selections-common: diff --git a/Documentation/userspace-api/media/v4l/standard.rst b/Documentation/userspace-api/media/v4l/standard.rst index 61c341508eb3..1f6678325da9 100644 --- a/Documentation/userspace-api/media/v4l/standard.rst +++ b/Documentation/userspace-api/media/v4l/standard.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _standard: diff --git a/Documentation/userspace-api/media/v4l/streaming-par.rst b/Documentation/userspace-api/media/v4l/streaming-par.rst index 6d1a1b93ac8b..806cbfdad0f1 100644 --- a/Documentation/userspace-api/media/v4l/streaming-par.rst +++ b/Documentation/userspace-api/media/v4l/streaming-par.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _streaming-par: @@ -21,13 +15,13 @@ The current video standard determines a nominal number of frames per second. If less than this number of frames is to be captured or output, applications can request frame skipping or duplicating on the driver side. This is especially useful when using the -:ref:`read() <func-read>` or :ref:`write() <func-write>`, which are +:c:func:`read()` or :c:func:`write()`, which are not augmented by timestamps or sequence counters, and to avoid unnecessary data copying. Finally these ioctls can be used to determine the number of buffers used internally by a driver in read/write mode. For implications see the -section discussing the :ref:`read() <func-read>` function. +section discussing the :c:func:`read()` function. To get and set the streaming parameters applications call the :ref:`VIDIOC_G_PARM <VIDIOC_G_PARM>` and diff --git a/Documentation/userspace-api/media/v4l/subdev-formats.rst b/Documentation/userspace-api/media/v4l/subdev-formats.rst index 9a4d61b0d76f..c9b7bb3ca089 100644 --- a/Documentation/userspace-api/media/v4l/subdev-formats.rst +++ b/Documentation/userspace-api/media/v4l/subdev-formats.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _v4l2-mbus-format: @@ -41,32 +34,107 @@ Media Bus Formats :ref:`field-order` for details. * - __u32 - ``colorspace`` - - Image colorspace, from enum - :c:type:`v4l2_colorspace`. See - :ref:`colorspaces` for details. + - Image colorspace, from enum :c:type:`v4l2_colorspace`. + Must be set by the driver for subdevices. If the application sets the + flag ``V4L2_MBUS_FRAMEFMT_SET_CSC`` then the application can set this + field on the source pad to request a specific colorspace for the media + bus data. If the driver cannot handle the requested conversion, it will + return another supported colorspace. The driver indicates that colorspace + conversion is supported by setting the flag + V4L2_SUBDEV_MBUS_CODE_CSC_COLORSPACE in the corresponding struct + :c:type:`v4l2_subdev_mbus_code_enum` during enumeration. + See :ref:`v4l2-subdev-mbus-code-flags`. + * - union { + - (anonymous) * - __u16 - ``ycbcr_enc`` - Y'CbCr encoding, from enum :c:type:`v4l2_ycbcr_encoding`. This information supplements the ``colorspace`` and must be set by - the driver for capture streams and by the application for output - streams, see :ref:`colorspaces`. + the driver for subdevices, see :ref:`colorspaces`. If the application + sets the flag ``V4L2_MBUS_FRAMEFMT_SET_CSC`` then the application can set + this field on a source pad to request a specific Y'CbCr encoding + for the media bus data. If the driver cannot handle the requested + conversion, it will return another supported encoding. + This field is ignored for HSV media bus formats. The driver indicates + that ycbcr_enc conversion is supported by setting the flag + V4L2_SUBDEV_MBUS_CODE_CSC_YCBCR_ENC in the corresponding struct + :c:type:`v4l2_subdev_mbus_code_enum` during enumeration. + See :ref:`v4l2-subdev-mbus-code-flags`. + * - __u16 + - ``hsv_enc`` + - HSV encoding, from enum :c:type:`v4l2_hsv_encoding`. + This information supplements the ``colorspace`` and must be set by + the driver for subdevices, see :ref:`colorspaces`. If the application + sets the flag ``V4L2_MBUS_FRAMEFMT_SET_CSC`` then the application can set + this field on a source pad to request a specific HSV encoding + for the media bus data. If the driver cannot handle the requested + conversion, it will return another supported encoding. + This field is ignored for Y'CbCr media bus formats. The driver indicates + that hsv_enc conversion is supported by setting the flag + V4L2_SUBDEV_MBUS_CODE_CSC_HSV_ENC in the corresponding struct + :c:type:`v4l2_subdev_mbus_code_enum` during enumeration. + See :ref:`v4l2-subdev-mbus-code-flags` + * - } + - * - __u16 - ``quantization`` - Quantization range, from enum :c:type:`v4l2_quantization`. This information supplements the ``colorspace`` and must be set by - the driver for capture streams and by the application for output - streams, see :ref:`colorspaces`. + the driver for subdevices, see :ref:`colorspaces`. If the application + sets the flag ``V4L2_MBUS_FRAMEFMT_SET_CSC`` then the application can set + this field on a source pad to request a specific quantization + for the media bus data. If the driver cannot handle the requested + conversion, it will return another supported quantization. + The driver indicates that quantization conversion is supported by + setting the flag V4L2_SUBDEV_MBUS_CODE_CSC_QUANTIZATION in the + corresponding struct :c:type:`v4l2_subdev_mbus_code_enum` + during enumeration. See :ref:`v4l2-subdev-mbus-code-flags`. + * - __u16 - ``xfer_func`` - Transfer function, from enum :c:type:`v4l2_xfer_func`. This information supplements the ``colorspace`` and must be set by - the driver for capture streams and by the application for output - streams, see :ref:`colorspaces`. + the driver for subdevices, see :ref:`colorspaces`. If the application + sets the flag ``V4L2_MBUS_FRAMEFMT_SET_CSC`` then the application can set + this field on a source pad to request a specific transfer + function for the media bus data. If the driver cannot handle the requested + conversion, it will return another supported transfer function. + The driver indicates that the transfer function conversion is supported by + setting the flag V4L2_SUBDEV_MBUS_CODE_CSC_XFER_FUNC in the + corresponding struct :c:type:`v4l2_subdev_mbus_code_enum` + during enumeration. See :ref:`v4l2-subdev-mbus-code-flags`. * - __u16 - - ``reserved``\ [11] + - ``flags`` + - flags See: :ref:v4l2-mbus-framefmt-flags + * - __u16 + - ``reserved``\ [10] - Reserved for future extensions. Applications and drivers must set the array to zero. +.. _v4l2-mbus-framefmt-flags: + +.. flat-table:: v4l2_mbus_framefmt Flags + :header-rows: 0 + :stub-columns: 0 + :widths: 3 1 4 + + * .. _`mbus-framefmt-set-csc`: + + - ``V4L2_MBUS_FRAMEFMT_SET_CSC`` + - 0x0001 + - Set by the application. It is only used for source pads and is + ignored for sink pads. If set, then request the subdevice to do + colorspace conversion from the received colorspace to the requested + colorspace values. If the colorimetry field (``colorspace``, ``xfer_func``, + ``ycbcr_enc``, ``hsv_enc`` or ``quantization``) is set to ``*_DEFAULT``, + then that colorimetry setting will remain unchanged from what was received. + So in order to change the quantization, only the ``quantization`` field shall + be set to non default value (``V4L2_QUANTIZATION_FULL_RANGE`` or + ``V4L2_QUANTIZATION_LIM_RANGE``) and all other colorimetry fields shall + be set to ``*_DEFAULT``. + + To check which conversions are supported by the hardware for the current + media bus frame format, see :ref:`v4l2-subdev-mbus-code-flags`. .. _v4l2-mbus-pixelcode: diff --git a/Documentation/userspace-api/media/v4l/subdev-image-processing-crop.svg b/Documentation/userspace-api/media/v4l/subdev-image-processing-crop.svg index 109bbcebd3b4..d92311281e01 100644 --- a/Documentation/userspace-api/media/v4l/subdev-image-processing-crop.svg +++ b/Documentation/userspace-api/media/v4l/subdev-image-processing-crop.svg @@ -1,14 +1,5 @@ <?xml version="1.0" encoding="UTF-8" standalone="no"?> -<!-- - Permission is granted to copy, distribute and/or modify this - document under the terms of the GNU Free Documentation License, - Version 1.1 or any later version published by the Free Software - Foundation, with no Invariant Sections, no Front-Cover Texts - and no Back-Cover Texts. A copy of the license is included at - Documentation/userspace-api/media/fdl-appendix.rst. - - TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections ---> +<!-- SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later --> <svg xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:cc="http://creativecommons.org/ns#" diff --git a/Documentation/userspace-api/media/v4l/subdev-image-processing-full.svg b/Documentation/userspace-api/media/v4l/subdev-image-processing-full.svg index cfdb7532d5b6..864a594ff8d0 100644 --- a/Documentation/userspace-api/media/v4l/subdev-image-processing-full.svg +++ b/Documentation/userspace-api/media/v4l/subdev-image-processing-full.svg @@ -1,14 +1,5 @@ <?xml version="1.0" encoding="UTF-8" standalone="no"?> -<!-- - Permission is granted to copy, distribute and/or modify this - document under the terms of the GNU Free Documentation License, - Version 1.1 or any later version published by the Free Software - Foundation, with no Invariant Sections, no Front-Cover Texts - and no Back-Cover Texts. A copy of the license is included at - Documentation/userspace-api/media/fdl-appendix.rst. - - TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections ---> +<!-- SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later --> <svg xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:cc="http://creativecommons.org/ns#" diff --git a/Documentation/userspace-api/media/v4l/subdev-image-processing-scaling-multi-source.svg b/Documentation/userspace-api/media/v4l/subdev-image-processing-scaling-multi-source.svg index f7f1379d30a6..b75755d31f15 100644 --- a/Documentation/userspace-api/media/v4l/subdev-image-processing-scaling-multi-source.svg +++ b/Documentation/userspace-api/media/v4l/subdev-image-processing-scaling-multi-source.svg @@ -1,14 +1,5 @@ <?xml version="1.0" encoding="UTF-8" standalone="no"?> -<!-- - Permission is granted to copy, distribute and/or modify this - document under the terms of the GNU Free Documentation License, - Version 1.1 or any later version published by the Free Software - Foundation, with no Invariant Sections, no Front-Cover Texts - and no Back-Cover Texts. A copy of the license is included at - Documentation/userspace-api/media/fdl-appendix.rst. - - TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections ---> +<!-- SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later --> <svg xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:cc="http://creativecommons.org/ns#" diff --git a/Documentation/userspace-api/media/v4l/tch-formats.rst b/Documentation/userspace-api/media/v4l/tch-formats.rst index f83aec85fd76..8c941ff9e200 100644 --- a/Documentation/userspace-api/media/v4l/tch-formats.rst +++ b/Documentation/userspace-api/media/v4l/tch-formats.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _tch-formats: diff --git a/Documentation/userspace-api/media/v4l/tuner.rst b/Documentation/userspace-api/media/v4l/tuner.rst index 02a396eb6613..e2c53c3abdc6 100644 --- a/Documentation/userspace-api/media/v4l/tuner.rst +++ b/Documentation/userspace-api/media/v4l/tuner.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _tuner: diff --git a/Documentation/userspace-api/media/v4l/user-func.rst b/Documentation/userspace-api/media/v4l/user-func.rst index bf77c842718e..53e604bd7d60 100644 --- a/Documentation/userspace-api/media/v4l/user-func.rst +++ b/Documentation/userspace-api/media/v4l/user-func.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _user-func: diff --git a/Documentation/userspace-api/media/v4l/userp.rst b/Documentation/userspace-api/media/v4l/userp.rst index 2d0fa7353066..db224f9b611e 100644 --- a/Documentation/userspace-api/media/v4l/userp.rst +++ b/Documentation/userspace-api/media/v4l/userp.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _userp: @@ -85,10 +79,10 @@ buffers it must wait until an empty buffer can be dequeued and reused. Two methods exist to suspend execution of the application until one or more buffers can be dequeued. By default :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>` blocks when no buffer is in the outgoing queue. When the -``O_NONBLOCK`` flag was given to the :ref:`open() <func-open>` function, +``O_NONBLOCK`` flag was given to the :c:func:`open()` function, :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>` returns immediately with an ``EAGAIN`` error code when no buffer is available. The :ref:`select() -<func-select>` or :ref:`poll() <func-poll>` function are always +<func-select>` or :c:func:`poll()` function are always available. To start and stop capturing or output applications call the @@ -108,7 +102,7 @@ Drivers implementing user pointer I/O must support the :ref:`VIDIOC_REQBUFS <VIDIOC_REQBUFS>`, :ref:`VIDIOC_QBUF <VIDIOC_QBUF>`, :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>`, :ref:`VIDIOC_STREAMON <VIDIOC_STREAMON>` and :ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>` ioctls, the -:ref:`select() <func-select>` and :ref:`poll() <func-poll>` function. [#f2]_ +:c:func:`select()` and :c:func:`poll()` function. [#f2]_ .. [#f1] We expect that frequently used buffers are typically not swapped out. @@ -123,6 +117,6 @@ and :ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>` ioctls, the because an application may share them with other processes. .. [#f2] - At the driver level :ref:`select() <func-select>` and :ref:`poll() <func-poll>` are - the same, and :ref:`select() <func-select>` is too important to be optional. + At the driver level :c:func:`select()` and :c:func:`poll()` are + the same, and :c:func:`select()` is too important to be optional. The rest should be evident. diff --git a/Documentation/userspace-api/media/v4l/v4l2-selection-flags.rst b/Documentation/userspace-api/media/v4l/v4l2-selection-flags.rst index 5c6f351b2443..3a834d050110 100644 --- a/Documentation/userspace-api/media/v4l/v4l2-selection-flags.rst +++ b/Documentation/userspace-api/media/v4l/v4l2-selection-flags.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _v4l2-selection-flags: diff --git a/Documentation/userspace-api/media/v4l/v4l2-selection-targets.rst b/Documentation/userspace-api/media/v4l/v4l2-selection-targets.rst index 69f500093aa2..e877ebbdb32e 100644 --- a/Documentation/userspace-api/media/v4l/v4l2-selection-targets.rst +++ b/Documentation/userspace-api/media/v4l/v4l2-selection-targets.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _v4l2-selection-targets: diff --git a/Documentation/userspace-api/media/v4l/v4l2.rst b/Documentation/userspace-api/media/v4l/v4l2.rst index 35796c4fbe52..ad7a2bf0cf26 100644 --- a/Documentation/userspace-api/media/v4l/v4l2.rst +++ b/Documentation/userspace-api/media/v4l/v4l2.rst @@ -1,13 +1,6 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections - +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. include:: <isonum.txt> + .. _v4l2spec: ############################ diff --git a/Documentation/userspace-api/media/v4l/v4l2grab-example.rst b/Documentation/userspace-api/media/v4l/v4l2grab-example.rst index 270738876f72..b323be42c580 100644 --- a/Documentation/userspace-api/media/v4l/v4l2grab-example.rst +++ b/Documentation/userspace-api/media/v4l/v4l2grab-example.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _v4l2grab-example: diff --git a/Documentation/userspace-api/media/v4l/v4l2grab.c.rst b/Documentation/userspace-api/media/v4l/v4l2grab.c.rst index a21ff357a830..eaa0f95048e7 100644 --- a/Documentation/userspace-api/media/v4l/v4l2grab.c.rst +++ b/Documentation/userspace-api/media/v4l/v4l2grab.c.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later file: media/v4l/v4l2grab.c ========================== diff --git a/Documentation/userspace-api/media/v4l/vbi_525.svg b/Documentation/userspace-api/media/v4l/vbi_525.svg index b7d09057617e..b01086d466a6 100644 --- a/Documentation/userspace-api/media/v4l/vbi_525.svg +++ b/Documentation/userspace-api/media/v4l/vbi_525.svg @@ -1,14 +1,5 @@ <?xml version="1.0" encoding="UTF-8" standalone="no"?> -<!-- - Permission is granted to copy, distribute and/or modify this - document under the terms of the GNU Free Documentation License, - Version 1.1 or any later version published by the Free Software - Foundation, with no Invariant Sections, no Front-Cover Texts - and no Back-Cover Texts. A copy of the license is included at - Documentation/userspace-api/media/fdl-appendix.rst. - - TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections ---> +<!-- SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later --> <svg xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:cc="http://creativecommons.org/ns#" diff --git a/Documentation/userspace-api/media/v4l/vbi_625.svg b/Documentation/userspace-api/media/v4l/vbi_625.svg index e1f5e8552c37..41c1ce920d14 100644 --- a/Documentation/userspace-api/media/v4l/vbi_625.svg +++ b/Documentation/userspace-api/media/v4l/vbi_625.svg @@ -1,14 +1,5 @@ <?xml version="1.0" encoding="UTF-8" standalone="no"?> -<!-- - Permission is granted to copy, distribute and/or modify this - document under the terms of the GNU Free Documentation License, - Version 1.1 or any later version published by the Free Software - Foundation, with no Invariant Sections, no Front-Cover Texts - and no Back-Cover Texts. A copy of the license is included at - Documentation/userspace-api/media/fdl-appendix.rst. - - TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections ---> +<!-- SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later --> <svg xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:cc="http://creativecommons.org/ns#" diff --git a/Documentation/userspace-api/media/v4l/vbi_hsync.svg b/Documentation/userspace-api/media/v4l/vbi_hsync.svg index 77606a7b00a4..7fcf12a7ece0 100644 --- a/Documentation/userspace-api/media/v4l/vbi_hsync.svg +++ b/Documentation/userspace-api/media/v4l/vbi_hsync.svg @@ -1,14 +1,5 @@ <?xml version="1.0" encoding="UTF-8" standalone="no"?> -<!-- - Permission is granted to copy, distribute and/or modify this - document under the terms of the GNU Free Documentation License, - Version 1.1 or any later version published by the Free Software - Foundation, with no Invariant Sections, no Front-Cover Texts - and no Back-Cover Texts. A copy of the license is included at - Documentation/userspace-api/media/fdl-appendix.rst. - - TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections ---> +<!-- SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later --> <svg xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:cc="http://creativecommons.org/ns#" diff --git a/Documentation/userspace-api/media/v4l/video.rst b/Documentation/userspace-api/media/v4l/video.rst index 9b73dba0eb8d..f8f69a57602c 100644 --- a/Documentation/userspace-api/media/v4l/video.rst +++ b/Documentation/userspace-api/media/v4l/video.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _video: diff --git a/Documentation/userspace-api/media/v4l/videodev.rst b/Documentation/userspace-api/media/v4l/videodev.rst index c8244b895802..c866fec417eb 100644 --- a/Documentation/userspace-api/media/v4l/videodev.rst +++ b/Documentation/userspace-api/media/v4l/videodev.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _videodev: diff --git a/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst b/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst index f2a702870fad..b06e5b528e11 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_CREATE_BUFS: @@ -18,24 +12,22 @@ Name VIDIOC_CREATE_BUFS - Create buffers for Memory Mapped or User Pointer or DMA Buffer I/O - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_CREATE_BUFS, struct v4l2_create_buffers *argp ) - :name: VIDIOC_CREATE_BUFS +.. c:macro:: VIDIOC_CREATE_BUFS +``int ioctl(int fd, VIDIOC_CREATE_BUFS, struct v4l2_create_buffers *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_create_buffers`. - Description =========== @@ -78,7 +70,6 @@ the actual number allocated and the starting index in the ``count`` and the ``index`` fields respectively. On return ``count`` can be smaller than the number requested. - .. c:type:: v4l2_create_buffers .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -120,17 +111,12 @@ than the number requested. If you want to just query the capabilities without making any other changes, then set ``count`` to 0, ``memory`` to ``V4L2_MEMORY_MMAP`` and ``format.type`` to the buffer type. - * - __u32 - - ``flags`` - - Specifies additional buffer management attributes. - See :ref:`memory-flags`. * - __u32 - - ``reserved``\ [6] + - ``reserved``\ [7] - A place holder for future extensions. Drivers and applications must set the array to zero. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-cropcap.rst b/Documentation/userspace-api/media/v4l/vidioc-cropcap.rst index 035ed9d577ae..00c31410d4e4 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-cropcap.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-cropcap.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_CROPCAP: @@ -18,24 +12,22 @@ Name VIDIOC_CROPCAP - Information about the video cropping and scaling abilities - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_CROPCAP, struct v4l2_cropcap *argp ) - :name: VIDIOC_CROPCAP +.. c:macro:: VIDIOC_CROPCAP +``int ioctl(int fd, VIDIOC_CROPCAP, struct v4l2_cropcap *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_cropcap`. - Description =========== @@ -102,7 +94,6 @@ overlay devices. Starting with kernel 4.13 both variations are allowed. - .. _v4l2-rect-crop: .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -127,7 +118,6 @@ overlay devices. - ``height`` - Height of the rectangle, in pixels. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-dbg-g-chip-info.rst b/Documentation/userspace-api/media/v4l/vidioc-dbg-g-chip-info.rst index 16078a2d3e3d..bde6e952b267 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-dbg-g-chip-info.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-dbg-g-chip-info.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_DBG_G_CHIP_INFO: @@ -18,24 +12,22 @@ Name VIDIOC_DBG_G_CHIP_INFO - Identify the chips on a TV card - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_DBG_G_CHIP_INFO, struct v4l2_dbg_chip_info *argp ) - :name: VIDIOC_DBG_G_CHIP_INFO +.. c:macro:: VIDIOC_DBG_G_CHIP_INFO +``int ioctl(int fd, VIDIOC_DBG_G_CHIP_INFO, struct v4l2_dbg_chip_info *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_dbg_chip_info`. - Description =========== @@ -83,7 +75,6 @@ is available from the LinuxTV v4l-dvb repository; see `https://linuxtv.org/repo/ <https://linuxtv.org/repo/>`__ for access instructions. - .. tabularcolumns:: |p{3.5cm}|p{3.5cm}|p{3.5cm}|p{7.0cm}| .. _name-v4l2-dbg-match: @@ -110,7 +101,6 @@ instructions. - - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_dbg_chip_info @@ -137,7 +127,6 @@ instructions. - Reserved fields, both application and driver must set these to 0. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _name-chip-match-types: @@ -155,7 +144,6 @@ instructions. - 4 - Match the nth sub-device. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-dbg-g-register.rst b/Documentation/userspace-api/media/v4l/vidioc-dbg-g-register.rst index 6311a63278a5..e1a6abe705bd 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-dbg-g-register.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-dbg-g-register.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_DBG_G_REGISTER: @@ -18,27 +12,26 @@ Name VIDIOC_DBG_G_REGISTER - VIDIOC_DBG_S_REGISTER - Read or write hardware registers - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_DBG_G_REGISTER, struct v4l2_dbg_register *argp ) - :name: VIDIOC_DBG_G_REGISTER +.. c:macro:: VIDIOC_DBG_G_REGISTER + +``int ioctl(int fd, VIDIOC_DBG_G_REGISTER, struct v4l2_dbg_register *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_DBG_S_REGISTER, const struct v4l2_dbg_register *argp ) - :name: VIDIOC_DBG_S_REGISTER +.. c:macro:: VIDIOC_DBG_S_REGISTER +``int ioctl(int fd, VIDIOC_DBG_S_REGISTER, const struct v4l2_dbg_register *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_dbg_register`. - Description =========== @@ -92,7 +85,6 @@ It is available from the LinuxTV v4l-dvb repository; see `https://linuxtv.org/repo/ <https://linuxtv.org/repo/>`__ for access instructions. - .. tabularcolumns:: |p{3.5cm}|p{3.5cm}|p{3.5cm}|p{7.0cm}| .. c:type:: v4l2_dbg_match @@ -119,7 +111,6 @@ instructions. - - .. c:type:: v4l2_dbg_register .. flat-table:: struct v4l2_dbg_register @@ -140,7 +131,6 @@ instructions. - The value read from, or to be written into the register. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _chip-match-types: @@ -158,7 +148,6 @@ instructions. - 4 - Match the nth sub-device. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-decoder-cmd.rst b/Documentation/userspace-api/media/v4l/vidioc-decoder-cmd.rst index 7986a248bff9..fd71ceece037 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-decoder-cmd.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-decoder-cmd.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_DECODER_CMD: @@ -18,28 +12,26 @@ Name VIDIOC_DECODER_CMD - VIDIOC_TRY_DECODER_CMD - Execute an decoder command - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_DECODER_CMD, struct v4l2_decoder_cmd *argp ) - :name: VIDIOC_DECODER_CMD +.. c:macro:: VIDIOC_DECODER_CMD +``int ioctl(int fd, VIDIOC_DECODER_CMD, struct v4l2_decoder_cmd *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_TRY_DECODER_CMD, struct v4l2_decoder_cmd *argp ) - :name: VIDIOC_TRY_DECODER_CMD +.. c:macro:: VIDIOC_TRY_DECODER_CMD +``int ioctl(int fd, VIDIOC_TRY_DECODER_CMD, struct v4l2_decoder_cmd *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` pointer to struct :c:type:`v4l2_decoder_cmd`. - Description =========== @@ -54,11 +46,11 @@ this structure. The ``cmd`` field must contain the command code. Some commands use the ``flags`` field for additional information. -A :ref:`write() <func-write>` or :ref:`VIDIOC_STREAMON` +A :c:func:`write()` or :ref:`VIDIOC_STREAMON` call sends an implicit START command to the decoder if it has not been started yet. Applies to both queues of mem2mem decoders. -A :ref:`close() <func-close>` or :ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>` +A :c:func:`close()` or :ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>` call of a streaming file descriptor sends an implicit immediate STOP command to the decoder, and all buffered data is discarded. Applies to both queues of mem2mem decoders. @@ -67,7 +59,6 @@ In principle, these ioctls are optional, not all drivers may support them. They introduced in Linux 3.3. They are, however, mandatory for stateful mem2mem decoders (as further documented in :ref:`decoder`). - .. tabularcolumns:: |p{1.1cm}|p{2.4cm}|p{1.2cm}|p{1.6cm}|p{10.6cm}| .. c:type:: v4l2_decoder_cmd @@ -138,7 +129,6 @@ introduced in Linux 3.3. They are, however, mandatory for stateful mem2mem decod - - .. tabularcolumns:: |p{5.6cm}|p{0.6cm}|p{11.3cm}| .. _decoder-cmds: diff --git a/Documentation/userspace-api/media/v4l/vidioc-dqevent.rst b/Documentation/userspace-api/media/v4l/vidioc-dqevent.rst index 9412be0c3747..634af717c8ba 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-dqevent.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-dqevent.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_DQEVENT: @@ -18,24 +12,22 @@ Name VIDIOC_DQEVENT - Dequeue event - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_DQEVENT, struct v4l2_event *argp ) - :name: VIDIOC_DQEVENT +.. c:macro:: VIDIOC_DQEVENT +``int ioctl(int fd, VIDIOC_DQEVENT, struct v4l2_event *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_event`. - Description =========== @@ -45,7 +37,6 @@ structure are filled by the driver. The file handle will also receive exceptions which the application may get by e.g. using the select system call. - .. tabularcolumns:: |p{3.0cm}|p{4.4cm}|p{2.4cm}|p{7.7cm}| .. c:type:: v4l2_event @@ -107,7 +98,6 @@ call. zero. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. cssclass:: longtable @@ -198,7 +188,6 @@ call. - Base event number for driver-private events. - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_event_vsync @@ -213,7 +202,6 @@ call. - The upcoming field. See enum :c:type:`v4l2_field`. - .. tabularcolumns:: |p{3.5cm}|p{3.0cm}|p{1.8cm}|p{8.5cm}| .. c:type:: v4l2_event_ctrl @@ -264,7 +252,6 @@ call. :ref:`v4l2_queryctrl <v4l2-queryctrl>`. - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_event_frame_sync @@ -279,7 +266,6 @@ call. - The sequence number of the frame being received. - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_event_src_change @@ -295,7 +281,6 @@ call. :ref:`src-changes-flags`. - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_event_motion_det @@ -325,7 +310,6 @@ call. automatically assigned to the default region 0. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _ctrl-changes-flags: @@ -351,7 +335,6 @@ call. step or the default value of the control changed. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _src-changes-flags: @@ -382,7 +365,6 @@ call. loss of signal and so restarting streaming I/O is required in order for the hardware to synchronize to the video signal. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-dv-timings-cap.rst b/Documentation/userspace-api/media/v4l/vidioc-dv-timings-cap.rst index 60730c32bfe4..27bd6a83e42c 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-dv-timings-cap.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-dv-timings-cap.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_DV_TIMINGS_CAP: @@ -18,27 +12,26 @@ Name VIDIOC_DV_TIMINGS_CAP - VIDIOC_SUBDEV_DV_TIMINGS_CAP - The capabilities of the Digital Video receiver/transmitter - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_DV_TIMINGS_CAP, struct v4l2_dv_timings_cap *argp ) - :name: VIDIOC_DV_TIMINGS_CAP +.. c:macro:: VIDIOC_DV_TIMINGS_CAP + +``int ioctl(int fd, VIDIOC_DV_TIMINGS_CAP, struct v4l2_dv_timings_cap *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_DV_TIMINGS_CAP, struct v4l2_dv_timings_cap *argp ) - :name: VIDIOC_SUBDEV_DV_TIMINGS_CAP +.. c:macro:: VIDIOC_SUBDEV_DV_TIMINGS_CAP +``int ioctl(int fd, VIDIOC_SUBDEV_DV_TIMINGS_CAP, struct v4l2_dv_timings_cap *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_dv_timings_cap`. - Description =========== @@ -62,7 +55,6 @@ the desired pad number in the struct zero the ``reserved`` array. Attempts to query capabilities on a pad that doesn't support them will return an ``EINVAL`` error code. - .. tabularcolumns:: |p{1.2cm}|p{3.0cm}|p{13.3cm}| .. c:type:: v4l2_bt_timings_cap @@ -104,7 +96,6 @@ that doesn't support them will return an ``EINVAL`` error code. Drivers must set the array to zero. - .. tabularcolumns:: |p{1.0cm}|p{4.0cm}|p{3.5cm}|p{9.2cm}| .. c:type:: v4l2_dv_timings_cap @@ -160,7 +151,6 @@ that doesn't support them will return an ``EINVAL`` error code. - Can support non-standard timings, i.e. timings not belonging to the standards set in the ``standards`` field. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-encoder-cmd.rst b/Documentation/userspace-api/media/v4l/vidioc-encoder-cmd.rst index d0eacce5485e..5673606711b4 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-encoder-cmd.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-encoder-cmd.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_ENCODER_CMD: @@ -18,22 +12,22 @@ Name VIDIOC_ENCODER_CMD - VIDIOC_TRY_ENCODER_CMD - Execute an encoder command - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_ENCODER_CMD, struct v4l2_encoder_cmd *argp ) - :name: VIDIOC_ENCODER_CMD +.. c:macro:: VIDIOC_ENCODER_CMD + +``int ioctl(int fd, VIDIOC_ENCODER_CMD, struct v4l2_encoder_cmd *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_TRY_ENCODER_CMD, struct v4l2_encoder_cmd *argp ) - :name: VIDIOC_TRY_ENCODER_CMD +.. c:macro:: VIDIOC_TRY_ENCODER_CMD +``int ioctl(int fd, VIDIOC_TRY_ENCODER_CMD, struct v4l2_encoder_cmd *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_encoder_cmd`. @@ -54,16 +48,16 @@ this structure. The ``cmd`` field must contain the command code. Some commands use the ``flags`` field for additional information. -After a STOP command, :ref:`read() <func-read>` calls will read +After a STOP command, :c:func:`read()` calls will read the remaining data buffered by the driver. When the buffer is empty, -:ref:`read() <func-read>` will return zero and the next :ref:`read() <func-read>` +:c:func:`read()` will return zero and the next :c:func:`read()` call will restart the encoder. -A :ref:`read() <func-read>` or :ref:`VIDIOC_STREAMON <VIDIOC_STREAMON>` +A :c:func:`read()` or :ref:`VIDIOC_STREAMON <VIDIOC_STREAMON>` call sends an implicit START command to the encoder if it has not been started yet. Applies to both queues of mem2mem encoders. -A :ref:`close() <func-close>` or :ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>` +A :c:func:`close()` or :ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>` call of a streaming file descriptor sends an implicit immediate STOP to the encoder, and all buffered data is discarded. Applies to both queues of mem2mem encoders. @@ -72,7 +66,6 @@ These ioctls are optional, not all drivers may support them. They were introduced in Linux 2.6.21. They are, however, mandatory for stateful mem2mem encoders (as further documented in :ref:`encoder`). - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_encoder_cmd @@ -96,7 +89,6 @@ encoders (as further documented in :ref:`encoder`). the array to zero. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _encoder-cmds: @@ -141,7 +133,6 @@ encoders (as further documented in :ref:`encoder`). the encoder is already running, this command does nothing. No flags are defined for this command. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _encoder-flags: @@ -158,7 +149,6 @@ encoders (as further documented in :ref:`encoder`). Does not apply to :ref:`encoder`. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-enum-dv-timings.rst b/Documentation/userspace-api/media/v4l/vidioc-enum-dv-timings.rst index 89d6b860193a..20730cd4f6ef 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-enum-dv-timings.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-enum-dv-timings.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_ENUM_DV_TIMINGS: @@ -18,27 +12,26 @@ Name VIDIOC_ENUM_DV_TIMINGS - VIDIOC_SUBDEV_ENUM_DV_TIMINGS - Enumerate supported Digital Video timings - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_ENUM_DV_TIMINGS, struct v4l2_enum_dv_timings *argp ) - :name: VIDIOC_ENUM_DV_TIMINGS +.. c:macro:: VIDIOC_ENUM_DV_TIMINGS + +``int ioctl(int fd, VIDIOC_ENUM_DV_TIMINGS, struct v4l2_enum_dv_timings *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_ENUM_DV_TIMINGS, struct v4l2_enum_dv_timings *argp ) - :name: VIDIOC_SUBDEV_ENUM_DV_TIMINGS +.. c:macro:: VIDIOC_SUBDEV_ENUM_DV_TIMINGS +``int ioctl(int fd, VIDIOC_SUBDEV_ENUM_DV_TIMINGS, struct v4l2_enum_dv_timings *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_enum_dv_timings`. - Description =========== @@ -72,7 +65,6 @@ pad number in the struct Attempts to enumerate timings on a pad that doesn't support them will return an ``EINVAL`` error code. - .. c:type:: v4l2_enum_dv_timings .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -98,7 +90,6 @@ return an ``EINVAL`` error code. - ``timings`` - The timings. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-enum-fmt.rst b/Documentation/userspace-api/media/v4l/vidioc-enum-fmt.rst index 05835e04c20b..2b3fa9c23146 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-enum-fmt.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-enum-fmt.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_ENUM_FMT: @@ -18,24 +12,22 @@ Name VIDIOC_ENUM_FMT - Enumerate image formats - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_ENUM_FMT, struct v4l2_fmtdesc *argp ) - :name: VIDIOC_ENUM_FMT +.. c:macro:: VIDIOC_ENUM_FMT +``int ioctl(int fd, VIDIOC_ENUM_FMT, struct v4l2_fmtdesc *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_fmtdesc`. - Description =========== @@ -79,7 +71,6 @@ the ``mbus_code`` field is handled differently: formats shall not depend on the active configuration of the video device or device pipeline. - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_fmtdesc @@ -144,7 +135,6 @@ the ``mbus_code`` field is handled differently: zero. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _fmtdesc-flags: @@ -198,7 +188,41 @@ the ``mbus_code`` field is handled differently: This flag can only be used in combination with the ``V4L2_FMT_FLAG_COMPRESSED`` flag, since this applies to compressed formats only. This flag is valid for stateful encoders only. - + * - ``V4L2_FMT_FLAG_CSC_COLORSPACE`` + - 0x0020 + - The driver allows the application to try to change the default + colorspace. This flag is relevant only for capture devices. + The application can ask to configure the colorspace of the capture device + when calling the :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctl with + :ref:`V4L2_PIX_FMT_FLAG_SET_CSC <v4l2-pix-fmt-flag-set-csc>` set. + * - ``V4L2_FMT_FLAG_CSC_XFER_FUNC`` + - 0x0040 + - The driver allows the application to try to change the default + transfer function. This flag is relevant only for capture devices. + The application can ask to configure the transfer function of the capture + device when calling the :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctl with + :ref:`V4L2_PIX_FMT_FLAG_SET_CSC <v4l2-pix-fmt-flag-set-csc>` set. + * - ``V4L2_FMT_FLAG_CSC_YCBCR_ENC`` + - 0x0080 + - The driver allows the application to try to change the default + Y'CbCr encoding. This flag is relevant only for capture devices. + The application can ask to configure the Y'CbCr encoding of the capture device + when calling the :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctl with + :ref:`V4L2_PIX_FMT_FLAG_SET_CSC <v4l2-pix-fmt-flag-set-csc>` set. + * - ``V4L2_FMT_FLAG_CSC_HSV_ENC`` + - 0x0080 + - The driver allows the application to try to change the default + HSV encoding. This flag is relevant only for capture devices. + The application can ask to configure the HSV encoding of the capture device + when calling the :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctl with + :ref:`V4L2_PIX_FMT_FLAG_SET_CSC <v4l2-pix-fmt-flag-set-csc>` set. + * - ``V4L2_FMT_FLAG_CSC_QUANTIZATION`` + - 0x0100 + - The driver allows the application to try to change the default + quantization. This flag is relevant only for capture devices. + The application can ask to configure the quantization of the capture + device when calling the :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctl with + :ref:`V4L2_PIX_FMT_FLAG_SET_CSC <v4l2-pix-fmt-flag-set-csc>` set. Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-enum-frameintervals.rst b/Documentation/userspace-api/media/v4l/vidioc-enum-frameintervals.rst index 0e3db737371f..1f0949726045 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-enum-frameintervals.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-enum-frameintervals.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_ENUM_FRAMEINTERVALS: @@ -18,25 +12,23 @@ Name VIDIOC_ENUM_FRAMEINTERVALS - Enumerate frame intervals - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_ENUM_FRAMEINTERVALS, struct v4l2_frmivalenum *argp ) - :name: VIDIOC_ENUM_FRAMEINTERVALS +.. c:macro:: VIDIOC_ENUM_FRAMEINTERVALS +``int ioctl(int fd, VIDIOC_ENUM_FRAMEINTERVALS, struct v4l2_frmivalenum *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_frmivalenum` that contains a pixel format and size and receives a frame interval. - Description =========== @@ -98,7 +90,6 @@ other ioctl calls while it runs the frame interval enumeration. frame_rate = 1 / frame_interval - Structs ======= @@ -106,7 +97,6 @@ In the structs below, *IN* denotes a value that has to be filled in by the application, *OUT* denotes values that the driver fills in. The application should zero out all members except for the *IN* fields. - .. c:type:: v4l2_frmival_stepwise .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -127,7 +117,6 @@ application should zero out all members except for the *IN* fields. - Frame interval step size [s]. - .. c:type:: v4l2_frmivalenum .. tabularcolumns:: |p{1.8cm}|p{4.4cm}|p{2.4cm}|p{8.9cm}| @@ -170,11 +159,9 @@ application should zero out all members except for the *IN* fields. applications. - Enums ===== - .. c:type:: v4l2_frmivaltypes .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| @@ -194,7 +181,6 @@ Enums - 3 - Step-wise defined frame interval. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-enum-framesizes.rst b/Documentation/userspace-api/media/v4l/vidioc-enum-framesizes.rst index 1934d7da9743..c9a36bcf699f 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-enum-framesizes.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-enum-framesizes.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_ENUM_FRAMESIZES: @@ -18,26 +12,24 @@ Name VIDIOC_ENUM_FRAMESIZES - Enumerate frame sizes - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_ENUM_FRAMESIZES, struct v4l2_frmsizeenum *argp ) - :name: VIDIOC_ENUM_FRAMESIZES +.. c:macro:: VIDIOC_ENUM_FRAMESIZES +``int ioctl(int fd, VIDIOC_ENUM_FRAMESIZES, struct v4l2_frmsizeenum *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_frmsizeenum` that contains an index and pixel format and receives a frame width and height. - Description =========== @@ -88,7 +80,6 @@ without any interaction from the application itself. This means that the enumeration data is consistent if the application does not perform any other ioctl calls while it runs the frame size enumeration. - Structs ======= @@ -96,7 +87,6 @@ In the structs below, *IN* denotes a value that has to be filled in by the application, *OUT* denotes values that the driver fills in. The application should zero out all members except for the *IN* fields. - .. c:type:: v4l2_frmsize_discrete .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -114,7 +104,6 @@ application should zero out all members except for the *IN* fields. - Height of the frame [pixel]. - .. c:type:: v4l2_frmsize_stepwise .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -144,7 +133,6 @@ application should zero out all members except for the *IN* fields. - Frame height step size [pixel]. - .. c:type:: v4l2_frmsizeenum .. tabularcolumns:: |p{1.4cm}|p{5.9cm}|p{2.3cm}|p{8.0cm}| @@ -180,11 +168,9 @@ application should zero out all members except for the *IN* fields. applications. - Enums ===== - .. c:type:: v4l2_frmsizetypes .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| @@ -204,7 +190,6 @@ Enums - 3 - Step-wise defined frame size. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-enum-freq-bands.rst b/Documentation/userspace-api/media/v4l/vidioc-enum-freq-bands.rst index ee3ba67601fa..a0764fca8d18 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-enum-freq-bands.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-enum-freq-bands.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_ENUM_FREQ_BANDS: @@ -18,24 +12,22 @@ Name VIDIOC_ENUM_FREQ_BANDS - Enumerate supported frequency bands - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_ENUM_FREQ_BANDS, struct v4l2_frequency_band *argp ) - :name: VIDIOC_ENUM_FREQ_BANDS +.. c:macro:: VIDIOC_ENUM_FREQ_BANDS +``int ioctl(int fd, VIDIOC_ENUM_FREQ_BANDS, struct v4l2_frequency_band *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_frequency_band`. - Description =========== @@ -48,7 +40,6 @@ fields, and zero out the ``reserved`` array of a struct This ioctl is supported if the ``V4L2_TUNER_CAP_FREQ_BANDS`` capability of the corresponding tuner/modulator is set. - .. tabularcolumns:: |p{2.9cm}|p{2.9cm}|p{5.8cm}|p{2.9cm}|p{3.0cm}| .. c:type:: v4l2_frequency_band @@ -117,7 +108,6 @@ of the corresponding tuner/modulator is set. Applications and drivers must set the array to zero. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _band-modulation: @@ -137,7 +127,6 @@ of the corresponding tuner/modulator is set. - 0x08 - Amplitude Modulation, commonly used for analog radio. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-enumaudio.rst b/Documentation/userspace-api/media/v4l/vidioc-enumaudio.rst index afe4821e5863..7873e5434d3e 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-enumaudio.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-enumaudio.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_ENUMAUDIO: @@ -18,24 +12,22 @@ Name VIDIOC_ENUMAUDIO - Enumerate audio inputs - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_ENUMAUDIO, struct v4l2_audio *argp ) - :name: VIDIOC_ENUMAUDIO +.. c:macro:: VIDIOC_ENUMAUDIO +``int ioctl(int fd, VIDIOC_ENUMAUDIO, struct v4l2_audio *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_audio`. - Description =========== @@ -50,7 +42,6 @@ zero, incrementing by one until the driver returns ``EINVAL``. See :ref:`VIDIOC_G_AUDIO <VIDIOC_G_AUDIO>` for a description of struct :c:type:`v4l2_audio`. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-enumaudioout.rst b/Documentation/userspace-api/media/v4l/vidioc-enumaudioout.rst index 31c2ae460e2d..d4c3ba320834 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-enumaudioout.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-enumaudioout.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_ENUMAUDOUT: @@ -18,24 +12,22 @@ Name VIDIOC_ENUMAUDOUT - Enumerate audio outputs - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_ENUMAUDOUT, struct v4l2_audioout *argp ) - :name: VIDIOC_ENUMAUDOUT +.. c:macro:: VIDIOC_ENUMAUDOUT +``int ioctl(int fd, VIDIOC_ENUMAUDOUT, struct v4l2_audioout *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_audioout`. - Description =========== @@ -55,7 +47,6 @@ zero, incrementing by one until the driver returns ``EINVAL``. See :ref:`VIDIOC_G_AUDIOout <VIDIOC_G_AUDOUT>` for a description of struct :c:type:`v4l2_audioout`. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-enuminput.rst b/Documentation/userspace-api/media/v4l/vidioc-enuminput.rst index 510670bff3de..0f62e681a827 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-enuminput.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-enuminput.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_ENUMINPUT: @@ -18,24 +12,22 @@ Name VIDIOC_ENUMINPUT - Enumerate video inputs - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_ENUMINPUT, struct v4l2_input *argp ) - :name: VIDIOC_ENUMINPUT +.. c:macro:: VIDIOC_ENUMINPUT +``int ioctl(int fd, VIDIOC_ENUMINPUT, struct v4l2_input *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_input`. - Description =========== @@ -46,7 +38,6 @@ fill the rest of the structure or return an ``EINVAL`` error code when the index is out of bounds. To enumerate all inputs applications shall begin at index zero, incrementing by one until the driver returns ``EINVAL``. - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_input @@ -110,7 +101,6 @@ at index zero, incrementing by one until the driver returns ``EINVAL``. zero. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _input-type: @@ -133,7 +123,6 @@ at index zero, incrementing by one until the driver returns ``EINVAL``. - This input is a touch device for capturing raw touch data. - .. tabularcolumns:: |p{4.8cm}|p{2.6cm}|p{10.1cm}| .. _input-status: @@ -205,7 +194,6 @@ at index zero, incrementing by one until the driver returns ``EINVAL``. - VTR time constant. [?] - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _input-capabilities: @@ -229,7 +217,6 @@ at index zero, incrementing by one until the driver returns ``EINVAL``. ``V4L2_SEL_TGT_NATIVE_SIZE`` selection target, see :ref:`v4l2-selections-common`. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-enumoutput.rst b/Documentation/userspace-api/media/v4l/vidioc-enumoutput.rst index 591a99cf8000..91fcf99094d2 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-enumoutput.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-enumoutput.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_ENUMOUTPUT: @@ -18,24 +12,22 @@ Name VIDIOC_ENUMOUTPUT - Enumerate video outputs - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_ENUMOUTPUT, struct v4l2_output *argp ) - :name: VIDIOC_ENUMOUTPUT +.. c:macro:: VIDIOC_ENUMOUTPUT +``int ioctl(int fd, VIDIOC_ENUMOUTPUT, struct v4l2_output *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_output`. - Description =========== @@ -47,7 +39,6 @@ when the index is out of bounds. To enumerate all outputs applications shall begin at index zero, incrementing by one until the driver returns ``EINVAL``. - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_output @@ -105,7 +96,6 @@ shall begin at index zero, incrementing by one until the driver returns zero. - .. tabularcolumns:: |p{7.0cm}|p{1.8cm}|p{8.7cm}| .. _output-type: @@ -128,7 +118,6 @@ shall begin at index zero, incrementing by one until the driver returns - The video output will be copied to a :ref:`video overlay <overlay>`. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _output-capabilities: @@ -152,7 +141,6 @@ shall begin at index zero, incrementing by one until the driver returns ``V4L2_SEL_TGT_NATIVE_SIZE`` selection target, see :ref:`v4l2-selections-common`. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-enumstd.rst b/Documentation/userspace-api/media/v4l/vidioc-enumstd.rst index 8a0508536c13..b5704e8cf909 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-enumstd.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-enumstd.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_ENUMSTD: @@ -18,27 +12,26 @@ Name VIDIOC_ENUMSTD - VIDIOC_SUBDEV_ENUMSTD - Enumerate supported video standards - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_ENUMSTD, struct v4l2_standard *argp ) - :name: VIDIOC_ENUMSTD +.. c:macro:: VIDIOC_ENUMSTD + +``int ioctl(int fd, VIDIOC_ENUMSTD, struct v4l2_standard *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_ENUMSTD, struct v4l2_standard *argp ) - :name: VIDIOC_SUBDEV_ENUMSTD +.. c:macro:: VIDIOC_SUBDEV_ENUMSTD +``int ioctl(int fd, VIDIOC_SUBDEV_ENUMSTD, struct v4l2_standard *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_standard`. - Description =========== @@ -52,7 +45,6 @@ zero, incrementing by one until the driver returns ``EINVAL``. Drivers may enumerate a different set of standards after switching the video input or output. [#f1]_ - .. c:type:: v4l2_standard .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -92,7 +84,6 @@ or output. [#f1]_ zero. - .. c:type:: v4l2_fract .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -109,7 +100,6 @@ or output. [#f1]_ - ``denominator`` - - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. _v4l2-std-id: @@ -127,7 +117,6 @@ or output. [#f1]_ standards. - .. code-block:: c #define V4L2_STD_PAL_B ((v4l2_std_id)0x00000001) @@ -149,7 +138,6 @@ rate, and PAL color modulation with a 4.43 MHz color subcarrier. Some PAL video recorders can play back NTSC tapes in this mode for display on a 50/60 Hz agnostic PAL TV. - .. code-block:: c #define V4L2_STD_NTSC_M ((v4l2_std_id)0x00001000) @@ -159,7 +147,6 @@ a 50/60 Hz agnostic PAL TV. ``V4L2_STD_NTSC_443`` is a hybrid standard with 525 lines, 60 Hz refresh rate, and NTSC color modulation with a 4.43 MHz color subcarrier. - .. code-block:: c #define V4L2_STD_NTSC_M_KR ((v4l2_std_id)0x00008000) @@ -182,7 +169,6 @@ terrestrial digital TV standards. Presently the V4L2 API does not support digital TV. See also the Linux DVB API at `https://linuxtv.org <https://linuxtv.org>`__. - .. code-block:: c #define V4L2_STD_PAL_BG (V4L2_STD_PAL_B | @@ -235,7 +221,6 @@ support digital TV. See also the Linux DVB API at #define V4L2_STD_ALL (V4L2_STD_525_60 | V4L2_STD_625_50) - .. raw:: latex \begingroup @@ -310,7 +295,6 @@ support digital TV. See also the Linux DVB API at \endgroup - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-expbuf.rst b/Documentation/userspace-api/media/v4l/vidioc-expbuf.rst index 384a9be9eba0..212377c90442 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-expbuf.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-expbuf.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_EXPBUF: @@ -18,24 +12,22 @@ Name VIDIOC_EXPBUF - Export a buffer as a DMABUF file descriptor. - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_EXPBUF, struct v4l2_exportbuffer *argp ) - :name: VIDIOC_EXPBUF +.. c:macro:: VIDIOC_EXPBUF +``int ioctl(int fd, VIDIOC_EXPBUF, struct v4l2_exportbuffer *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_exportbuffer`. - Description =========== @@ -70,11 +62,9 @@ for details about importing DMABUF files into V4L2 nodes. It is recommended to close a DMABUF file when it is no longer used to allow the associated memory to be reclaimed. - Examples ======== - .. code-block:: c int buffer_export(int v4lfd, enum v4l2_buf_type bt, int index, int *dmafd) @@ -94,7 +84,6 @@ Examples return 0; } - .. code-block:: c int buffer_export_mp(int v4lfd, enum v4l2_buf_type bt, int index, @@ -121,7 +110,6 @@ Examples return 0; } - .. c:type:: v4l2_exportbuffer .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -162,7 +150,6 @@ Examples - Reserved field for future use. Drivers and applications must set the array to zero. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-audio.rst b/Documentation/userspace-api/media/v4l/vidioc-g-audio.rst index 68531bcb62ab..4c93bd55bd97 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-audio.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-audio.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_AUDIO: @@ -18,27 +12,26 @@ Name VIDIOC_G_AUDIO - VIDIOC_S_AUDIO - Query or select the current audio input and its attributes - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_AUDIO, struct v4l2_audio *argp ) - :name: VIDIOC_G_AUDIO +.. c:macro:: VIDIOC_G_AUDIO + +``int ioctl(int fd, VIDIOC_G_AUDIO, struct v4l2_audio *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_AUDIO, const struct v4l2_audio *argp ) - :name: VIDIOC_S_AUDIO +.. c:macro:: VIDIOC_S_AUDIO +``int ioctl(int fd, VIDIOC_S_AUDIO, const struct v4l2_audio *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_audio`. - Description =========== @@ -56,7 +49,6 @@ ioctl. Drivers may switch to a different audio mode if the request cannot be satisfied. However, this is a write-only ioctl, it does not return the actual new audio mode. - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_audio @@ -87,7 +79,6 @@ return the actual new audio mode. the array to zero. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _audio-capability: @@ -108,7 +99,6 @@ return the actual new audio mode. - Automatic Volume Level mode is supported. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _audio-mode: @@ -122,7 +112,6 @@ return the actual new audio mode. - 0x00001 - AVL mode is on. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-audioout.rst b/Documentation/userspace-api/media/v4l/vidioc-g-audioout.rst index e13b74bf5ce3..194f22493517 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-audioout.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-audioout.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_AUDOUT: @@ -18,27 +12,26 @@ Name VIDIOC_G_AUDOUT - VIDIOC_S_AUDOUT - Query or select the current audio output - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_AUDOUT, struct v4l2_audioout *argp ) - :name: VIDIOC_G_AUDOUT +.. c:macro:: VIDIOC_G_AUDOUT + +``int ioctl(int fd, VIDIOC_G_AUDOUT, struct v4l2_audioout *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_AUDOUT, const struct v4l2_audioout *argp ) - :name: VIDIOC_S_AUDOUT +.. c:macro:: VIDIOC_S_AUDOUT +``int ioctl(int fd, VIDIOC_S_AUDOUT, const struct v4l2_audioout *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_audioout`. - Description =========== @@ -63,7 +56,6 @@ as ``VIDIOC_G_AUDOUT`` does. Connectors on a TV card to loop back the received audio signal to a sound card are not audio outputs in this sense. - .. c:type:: v4l2_audioout .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -94,7 +86,6 @@ as ``VIDIOC_G_AUDOUT`` does. - Reserved for future extensions. Drivers and applications must set the array to zero. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-crop.rst b/Documentation/userspace-api/media/v4l/vidioc-g-crop.rst index 10e086be55d5..0ac1509e41cc 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-crop.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-crop.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_CROP: @@ -18,27 +12,26 @@ Name VIDIOC_G_CROP - VIDIOC_S_CROP - Get or set the current cropping rectangle - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_CROP, struct v4l2_crop *argp ) - :name: VIDIOC_G_CROP +.. c:macro:: VIDIOC_G_CROP + +``int ioctl(int fd, VIDIOC_G_CROP, struct v4l2_crop *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_CROP, const struct v4l2_crop *argp ) - :name: VIDIOC_S_CROP +.. c:macro:: VIDIOC_S_CROP +``int ioctl(int fd, VIDIOC_S_CROP, const struct v4l2_crop *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_crop`. - Description =========== @@ -76,7 +69,6 @@ been negotiated. When cropping is not supported then no parameters are changed and :ref:`VIDIOC_S_CROP <VIDIOC_G_CROP>` returns the ``EINVAL`` error code. - .. c:type:: v4l2_crop .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -107,7 +99,6 @@ When cropping is not supported then no parameters are changed and Starting with kernel 4.13 both variations are allowed. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-ctrl.rst b/Documentation/userspace-api/media/v4l/vidioc-g-ctrl.rst index 9831b7514028..4f1bed53fad5 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-ctrl.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-ctrl.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_CTRL: @@ -18,27 +12,26 @@ Name VIDIOC_G_CTRL - VIDIOC_S_CTRL - Get or set the value of a control - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_CTRL, struct v4l2_control *argp ) - :name: VIDIOC_G_CTRL +.. c:macro:: VIDIOC_G_CTRL + +``int ioctl(int fd, VIDIOC_G_CTRL, struct v4l2_control *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_CTRL, struct v4l2_control *argp ) - :name: VIDIOC_S_CTRL +.. c:macro:: VIDIOC_S_CTRL +``int ioctl(int fd, VIDIOC_S_CTRL, struct v4l2_control *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_control`. - Description =========== @@ -62,7 +55,6 @@ These ioctls work only with user controls. For other control classes the :ref:`VIDIOC_S_EXT_CTRLS <VIDIOC_G_EXT_CTRLS>` or :ref:`VIDIOC_TRY_EXT_CTRLS <VIDIOC_G_EXT_CTRLS>` must be used. - .. c:type:: v4l2_control .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -79,7 +71,6 @@ These ioctls work only with user controls. For other control classes the - ``value`` - New value or current value. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-dv-timings.rst b/Documentation/userspace-api/media/v4l/vidioc-g-dv-timings.rst index 9a035a4ea0f0..760a33d43b7d 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-dv-timings.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-dv-timings.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_DV_TIMINGS: @@ -18,33 +12,34 @@ Name VIDIOC_G_DV_TIMINGS - VIDIOC_S_DV_TIMINGS - VIDIOC_SUBDEV_G_DV_TIMINGS - VIDIOC_SUBDEV_S_DV_TIMINGS - Get or set DV timings for input or output - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_DV_TIMINGS, struct v4l2_dv_timings *argp ) - :name: VIDIOC_G_DV_TIMINGS +.. c:macro:: VIDIOC_G_DV_TIMINGS + +``int ioctl(int fd, VIDIOC_G_DV_TIMINGS, struct v4l2_dv_timings *argp)`` + +.. c:macro:: VIDIOC_S_DV_TIMINGS + +``int ioctl(int fd, VIDIOC_S_DV_TIMINGS, struct v4l2_dv_timings *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_DV_TIMINGS, struct v4l2_dv_timings *argp ) - :name: VIDIOC_S_DV_TIMINGS +.. c:macro:: VIDIOC_SUBDEV_G_DV_TIMINGS -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_G_DV_TIMINGS, struct v4l2_dv_timings *argp ) - :name: VIDIOC_SUBDEV_G_DV_TIMINGS +``int ioctl(int fd, VIDIOC_SUBDEV_G_DV_TIMINGS, struct v4l2_dv_timings *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_S_DV_TIMINGS, struct v4l2_dv_timings *argp ) - :name: VIDIOC_SUBDEV_S_DV_TIMINGS +.. c:macro:: VIDIOC_SUBDEV_S_DV_TIMINGS +``int ioctl(int fd, VIDIOC_SUBDEV_S_DV_TIMINGS, struct v4l2_dv_timings *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_dv_timings`. - Description =========== @@ -67,7 +62,6 @@ the current input or output does not support DV timings (e.g. if :ref:`VIDIOC_ENUMINPUT` does not set the ``V4L2_IN_CAP_DV_TIMINGS`` flag), then ``ENODATA`` error code is returned. - Return Value ============ @@ -177,7 +171,6 @@ EPERM - Reserved for future extensions. Drivers and applications must set the array to zero. - .. tabularcolumns:: |p{3.5cm}|p{3.5cm}|p{7.0cm}|p{3.5cm}| .. c:type:: v4l2_dv_timings diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-edid.rst b/Documentation/userspace-api/media/v4l/vidioc-g-edid.rst index 0620f4cbbcbd..39d523a449a7 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-edid.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-edid.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_EDID: @@ -18,34 +12,34 @@ Name VIDIOC_G_EDID - VIDIOC_S_EDID - VIDIOC_SUBDEV_G_EDID - VIDIOC_SUBDEV_S_EDID - Get or set the EDID of a video receiver/transmitter - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_EDID, struct v4l2_edid *argp ) - :name: VIDIOC_G_EDID +.. c:macro:: VIDIOC_G_EDID + +``int ioctl(int fd, VIDIOC_G_EDID, struct v4l2_edid *argp)`` + +.. c:macro:: VIDIOC_S_EDID -.. c:function:: int ioctl( int fd, VIDIOC_S_EDID, struct v4l2_edid *argp ) - :name: VIDIOC_S_EDID +``int ioctl(int fd, VIDIOC_S_EDID, struct v4l2_edid *argp)`` +.. c:macro:: VIDIOC_SUBDEV_G_EDID -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_G_EDID, struct v4l2_edid *argp ) - :name: VIDIOC_SUBDEV_G_EDID +``int ioctl(int fd, VIDIOC_SUBDEV_G_EDID, struct v4l2_edid *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_S_EDID, struct v4l2_edid *argp ) - :name: VIDIOC_SUBDEV_S_EDID +.. c:macro:: VIDIOC_SUBDEV_S_EDID +``int ioctl(int fd, VIDIOC_SUBDEV_S_EDID, struct v4l2_edid *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_edid`. - Description =========== @@ -104,7 +98,6 @@ this will drive the hotplug pin low and/or block the source from reading the EDID data in some way. In any case, the end result is the same: the EDID is no longer available. - .. c:type:: v4l2_edid .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -139,7 +132,6 @@ EDID is no longer available. - Pointer to memory that contains the EDID. The minimum size is ``blocks`` * 128. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-enc-index.rst b/Documentation/userspace-api/media/v4l/vidioc-g-enc-index.rst index 8aad30a7c6c3..7698e65ccccf 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-enc-index.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-enc-index.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_ENC_INDEX: @@ -18,24 +12,22 @@ Name VIDIOC_G_ENC_INDEX - Get meta data about a compressed video stream - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_ENC_INDEX, struct v4l2_enc_idx *argp ) - :name: VIDIOC_G_ENC_INDEX +.. c:macro:: VIDIOC_G_ENC_INDEX +``int ioctl(int fd, VIDIOC_G_ENC_INDEX, struct v4l2_enc_idx *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_enc_idx`. - Description =========== @@ -62,7 +54,6 @@ will be zero. Currently this ioctl is only defined for MPEG-2 program streams and video elementary streams. - .. tabularcolumns:: |p{3.8cm}|p{5.6cm}|p{8.1cm}| .. c:type:: v4l2_enc_idx @@ -90,7 +81,6 @@ video elementary streams. their ``offset``. - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_enc_idx_entry @@ -123,7 +113,6 @@ video elementary streams. - Reserved for future extensions. Drivers must set the array to zero. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _enc-idx-flags: @@ -147,7 +136,6 @@ video elementary streams. - *AND* the flags field with this mask to obtain the picture coding type. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst b/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst index add17c9204cb..f2173e310d67 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_EXT_CTRLS: @@ -18,32 +12,30 @@ Name VIDIOC_G_EXT_CTRLS - VIDIOC_S_EXT_CTRLS - VIDIOC_TRY_EXT_CTRLS - Get or set the value of several controls, try control values - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_EXT_CTRLS, struct v4l2_ext_controls *argp ) - :name: VIDIOC_G_EXT_CTRLS +.. c:macro:: VIDIOC_G_EXT_CTRLS +``int ioctl(int fd, VIDIOC_G_EXT_CTRLS, struct v4l2_ext_controls *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_EXT_CTRLS, struct v4l2_ext_controls *argp ) - :name: VIDIOC_S_EXT_CTRLS +.. c:macro:: VIDIOC_S_EXT_CTRLS +``int ioctl(int fd, VIDIOC_S_EXT_CTRLS, struct v4l2_ext_controls *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_TRY_EXT_CTRLS, struct v4l2_ext_controls *argp ) - :name: VIDIOC_TRY_EXT_CTRLS +.. c:macro:: VIDIOC_TRY_EXT_CTRLS +``int ioctl(int fd, VIDIOC_TRY_EXT_CTRLS, struct v4l2_ext_controls *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_ext_controls`. - Description =========== @@ -126,7 +118,6 @@ correct. This prevents the situation where only some of the controls were set/get. Only low-level errors (e. g. a failed i2c command) can still cause this situation. - .. tabularcolumns:: |p{1.2cm}|p{3.0cm}|p{1.5cm}|p{11.8cm}| .. c:type:: v4l2_ext_control @@ -202,7 +193,6 @@ still cause this situation. * - } - - .. tabularcolumns:: |p{4.0cm}|p{2.2cm}|p{2.1cm}|p{8.2cm}| .. c:type:: v4l2_ext_controls @@ -316,7 +306,6 @@ still cause this situation. Ignored if ``count`` equals zero. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _ctrl-class: @@ -370,7 +359,6 @@ still cause this situation. - The class containing RF tuner controls. These controls are described in :ref:`rf-tuner-controls`. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-fbuf.rst b/Documentation/userspace-api/media/v4l/vidioc-g-fbuf.rst index 0124444419ae..dc1f16343b22 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-fbuf.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-fbuf.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_FBUF: @@ -18,27 +12,26 @@ Name VIDIOC_G_FBUF - VIDIOC_S_FBUF - Get or set frame buffer overlay parameters - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_FBUF, struct v4l2_framebuffer *argp ) - :name: VIDIOC_G_FBUF +.. c:macro:: VIDIOC_G_FBUF + +``int ioctl(int fd, VIDIOC_G_FBUF, struct v4l2_framebuffer *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_FBUF, const struct v4l2_framebuffer *argp ) - :name: VIDIOC_S_FBUF +.. c:macro:: VIDIOC_S_FBUF +``int ioctl(int fd, VIDIOC_S_FBUF, const struct v4l2_framebuffer *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_framebuffer`. - Description =========== @@ -82,7 +75,6 @@ jeopardize the system security, its stability or even damage the hardware, therefore only the superuser can set the parameters for a destructive video overlay. - .. tabularcolumns:: |p{3.5cm}|p{3.5cm}|p{3.5cm}|p{7.0cm}| .. c:type:: v4l2_framebuffer @@ -215,7 +207,6 @@ destructive video overlay. - ``priv`` - Reserved. Drivers and applications must set this field to zero. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _framebuffer-cap: @@ -264,7 +255,6 @@ destructive video overlay. chroma-key colors are replaced by framebuffer pixels, which is exactly opposite of ``V4L2_FBUF_CAP_CHROMAKEY`` - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _framebuffer-flags: @@ -339,7 +329,6 @@ destructive video overlay. other, so same ``chromakey`` field of struct :c:type:`v4l2_window` is being used. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-fmt.rst b/Documentation/userspace-api/media/v4l/vidioc-g-fmt.rst index 88bb69ec07e2..7e9f8475ea63 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-fmt.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-fmt.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_FMT: @@ -18,29 +12,30 @@ Name VIDIOC_G_FMT - VIDIOC_S_FMT - VIDIOC_TRY_FMT - Get or set the data format, try a format - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_FMT, struct v4l2_format *argp ) - :name: VIDIOC_G_FMT +.. c:macro:: VIDIOC_G_FMT + +``int ioctl(int fd, VIDIOC_G_FMT, struct v4l2_format *argp)`` + +.. c:macro:: VIDIOC_S_FMT + +``int ioctl(int fd, VIDIOC_S_FMT, struct v4l2_format *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_FMT, struct v4l2_format *argp ) - :name: VIDIOC_S_FMT +.. c:macro:: VIDIOC_TRY_FMT -.. c:function:: int ioctl( int fd, VIDIOC_TRY_FMT, struct v4l2_format *argp ) - :name: VIDIOC_TRY_FMT +``int ioctl(int fd, VIDIOC_TRY_FMT, struct v4l2_format *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_format`. - Description =========== @@ -92,7 +87,6 @@ recommended drivers are not required to implement this ioctl. The format as returned by :ref:`VIDIOC_TRY_FMT <VIDIOC_G_FMT>` must be identical to what :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` returns for the same input or output. - .. c:type:: v4l2_format .. tabularcolumns:: |p{1.2cm}|p{4.6cm}|p{3.0cm}|p{8.6cm}| @@ -142,7 +136,6 @@ The format as returned by :ref:`VIDIOC_TRY_FMT <VIDIOC_G_FMT>` must be identical * - } - - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-frequency.rst b/Documentation/userspace-api/media/v4l/vidioc-g-frequency.rst index 26300e0258a3..5445a4a442e4 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-frequency.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-frequency.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_FREQUENCY: @@ -18,27 +12,26 @@ Name VIDIOC_G_FREQUENCY - VIDIOC_S_FREQUENCY - Get or set tuner or modulator radio frequency - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_FREQUENCY, struct v4l2_frequency *argp ) - :name: VIDIOC_G_FREQUENCY +.. c:macro:: VIDIOC_G_FREQUENCY + +``int ioctl(int fd, VIDIOC_G_FREQUENCY, struct v4l2_frequency *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_FREQUENCY, const struct v4l2_frequency *argp ) - :name: VIDIOC_S_FREQUENCY +.. c:macro:: VIDIOC_S_FREQUENCY +``int ioctl(int fd, VIDIOC_S_FREQUENCY, const struct v4l2_frequency *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_frequency`. - Description =========== @@ -58,7 +51,6 @@ structure. When the requested frequency is not possible the driver assumes the closest possible value. However :ref:`VIDIOC_S_FREQUENCY <VIDIOC_G_FREQUENCY>` is a write-only ioctl, it does not return the actual new frequency. - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_frequency @@ -96,7 +88,6 @@ write-only ioctl, it does not return the actual new frequency. - Reserved for future extensions. Drivers and applications must set the array to zero. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-input.rst b/Documentation/userspace-api/media/v4l/vidioc-g-input.rst index 294e346678c1..eee9ce51c797 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-input.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-input.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_INPUT: @@ -18,27 +12,26 @@ Name VIDIOC_G_INPUT - VIDIOC_S_INPUT - Query or select the current video input - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_INPUT, int *argp ) - :name: VIDIOC_G_INPUT +.. c:macro:: VIDIOC_G_INPUT + +``int ioctl(int fd, VIDIOC_G_INPUT, int *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_INPUT, int *argp ) - :name: VIDIOC_S_INPUT +.. c:macro:: VIDIOC_S_INPUT +``int ioctl(int fd, VIDIOC_S_INPUT, int *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer an integer with input index. - Description =========== @@ -59,7 +52,6 @@ other parameters. Information about video inputs is available using the :ref:`VIDIOC_ENUMINPUT` ioctl. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-jpegcomp.rst b/Documentation/userspace-api/media/v4l/vidioc-g-jpegcomp.rst index 3b9981dcb8e0..93ed111dfcb9 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-jpegcomp.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-jpegcomp.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_JPEGCOMP: @@ -18,27 +12,26 @@ Name VIDIOC_G_JPEGCOMP - VIDIOC_S_JPEGCOMP - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_JPEGCOMP, v4l2_jpegcompression *argp ) - :name: VIDIOC_G_JPEGCOMP +.. c:macro:: VIDIOC_G_JPEGCOMP + +``int ioctl(int fd, VIDIOC_G_JPEGCOMP, v4l2_jpegcompression *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_JPEGCOMP, const v4l2_jpegcompression *argp ) - :name: VIDIOC_S_JPEGCOMP +.. c:macro:: VIDIOC_S_JPEGCOMP +``int ioctl(int fd, VIDIOC_S_JPEGCOMP, const v4l2_jpegcompression *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_jpegcompression`. - Description =========== @@ -61,7 +54,6 @@ stored in the JPEG-encoded fields. These define how the JPEG field is encoded. If you omit them, applications assume you've used standard encoding. You usually do want to add them. - .. tabularcolumns:: |p{1.2cm}|p{3.0cm}|p{13.3cm}| .. c:type:: v4l2_jpegcompression @@ -99,7 +91,6 @@ encoding. You usually do want to add them. control is exposed by a driver applications should use it instead and ignore this field. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _jpeg-markers: @@ -125,7 +116,6 @@ encoding. You usually do want to add them. - (1<<7) - App segment, driver will always use APP0 - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-modulator.rst b/Documentation/userspace-api/media/v4l/vidioc-g-modulator.rst index c2072f6e8756..2ac2473e341b 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-modulator.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-modulator.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_MODULATOR: @@ -18,27 +12,26 @@ Name VIDIOC_G_MODULATOR - VIDIOC_S_MODULATOR - Get or set modulator attributes - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_MODULATOR, struct v4l2_modulator *argp ) - :name: VIDIOC_G_MODULATOR +.. c:macro:: VIDIOC_G_MODULATOR + +``int ioctl(int fd, VIDIOC_G_MODULATOR, struct v4l2_modulator *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_MODULATOR, const struct v4l2_modulator *argp ) - :name: VIDIOC_S_MODULATOR +.. c:macro:: VIDIOC_S_MODULATOR +``int ioctl(int fd, VIDIOC_S_MODULATOR, const struct v4l2_modulator *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_modulator`. - Description =========== @@ -67,7 +60,6 @@ context. To change the radio frequency the :ref:`VIDIOC_S_FREQUENCY <VIDIOC_G_FREQUENCY>` ioctl is available. - .. tabularcolumns:: |p{2.9cm}|p{2.9cm}|p{5.8cm}|p{2.9cm}|p{3.0cm}| .. c:type:: v4l2_modulator @@ -128,7 +120,6 @@ To change the radio frequency the Drivers and applications must set the array to zero. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _modulator-txsubchans: @@ -189,7 +180,6 @@ To change the radio frequency the - 0x0010 - Enable the RDS encoder for a radio FM transmitter. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-output.rst b/Documentation/userspace-api/media/v4l/vidioc-g-output.rst index cad477420fd7..3138c4cc8fe3 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-output.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-output.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_OUTPUT: @@ -18,27 +12,26 @@ Name VIDIOC_G_OUTPUT - VIDIOC_S_OUTPUT - Query or select the current video output - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_OUTPUT, int *argp ) - :name: VIDIOC_G_OUTPUT +.. c:macro:: VIDIOC_G_OUTPUT + +``int ioctl(int fd, VIDIOC_G_OUTPUT, int *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_OUTPUT, int *argp ) - :name: VIDIOC_S_OUTPUT +.. c:macro:: VIDIOC_S_OUTPUT +``int ioctl(int fd, VIDIOC_S_OUTPUT, int *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to an integer with output index. - Description =========== @@ -60,7 +53,6 @@ negotiating any other parameters. Information about video outputs is available using the :ref:`VIDIOC_ENUMOUTPUT` ioctl. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-parm.rst b/Documentation/userspace-api/media/v4l/vidioc-g-parm.rst index 59e02aca164c..724f7fa7bae1 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-parm.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-parm.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_PARM: @@ -18,27 +12,26 @@ Name VIDIOC_G_PARM - VIDIOC_S_PARM - Get or set streaming parameters - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_PARM, v4l2_streamparm *argp ) - :name: VIDIOC_G_PARM +.. c:macro:: VIDIOC_G_PARM + +``int ioctl(int fd, VIDIOC_G_PARM, v4l2_streamparm *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_PARM, v4l2_streamparm *argp ) - :name: VIDIOC_S_PARM +.. c:macro:: VIDIOC_S_PARM +``int ioctl(int fd, VIDIOC_S_PARM, v4l2_streamparm *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_streamparm`. - Description =========== @@ -55,7 +48,7 @@ format, on the other hand, may change the frame interval. Further these ioctls can be used to determine the number of buffers used internally by a driver in read/write mode. For implications see the -section discussing the :ref:`read() <func-read>` function. +section discussing the :c:func:`read()` function. To get and set the streaming parameters applications call the :ref:`VIDIOC_G_PARM <VIDIOC_G_PARM>` and @@ -63,7 +56,6 @@ To get and set the streaming parameters applications call the pointer to a struct :c:type:`v4l2_streamparm` which contains a union holding separate parameters for input and output devices. - .. tabularcolumns:: |p{3.5cm}|p{3.5cm}|p{3.5cm}|p{7.0cm}| .. c:type:: v4l2_streamparm @@ -96,7 +88,6 @@ union holding separate parameters for input and output devices. - - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_captureparm @@ -145,7 +136,7 @@ union holding separate parameters for input and output devices. * - __u32 - ``readbuffers`` - Applications set this field to the desired number of buffers used - internally by the driver in :ref:`read() <func-read>` mode. + internally by the driver in :c:func:`read()` mode. Drivers return the actual number of buffers. When an application requests zero buffers, drivers should just return the current setting rather than the minimum or an error code. For details see @@ -156,7 +147,6 @@ union holding separate parameters for input and output devices. the array to zero. - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_outputparm @@ -179,7 +169,7 @@ union holding separate parameters for input and output devices. * - :cspan:`2` The field is intended to repeat frames on the driver side in - :ref:`write() <func-write>` mode (in streaming mode timestamps + :c:func:`write()` mode (in streaming mode timestamps can be used to throttle the output), saving I/O bandwidth. For stateful encoders (see :ref:`encoder`) this represents the @@ -206,7 +196,7 @@ union holding separate parameters for input and output devices. * - __u32 - ``writebuffers`` - Applications set this field to the desired number of buffers used - internally by the driver in :ref:`write() <func-write>` mode. Drivers + internally by the driver in :c:func:`write()` mode. Drivers return the actual number of buffers. When an application requests zero buffers, drivers should just return the current setting rather than the minimum or an error code. For details see @@ -217,7 +207,6 @@ union holding separate parameters for input and output devices. the array to zero. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _parm-caps: @@ -233,7 +222,6 @@ union holding separate parameters for input and output devices. field. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _parm-flags: @@ -272,8 +260,7 @@ union holding separate parameters for input and output devices. - Moving objects in the image might have excessive motion blur. - - Capture might only work through the :ref:`read() <func-read>` call. - + - Capture might only work through the :c:func:`read()` call. Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-priority.rst b/Documentation/userspace-api/media/v4l/vidioc-g-priority.rst index c8add130c7a4..d72a0c716fca 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-priority.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-priority.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_PRIORITY: @@ -18,27 +12,26 @@ Name VIDIOC_G_PRIORITY - VIDIOC_S_PRIORITY - Query or request the access priority associated with a file descriptor - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_PRIORITY, enum v4l2_priority *argp ) - :name: VIDIOC_G_PRIORITY +.. c:macro:: VIDIOC_G_PRIORITY + +``int ioctl(int fd, VIDIOC_G_PRIORITY, enum v4l2_priority *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_PRIORITY, const enum v4l2_priority *argp ) - :name: VIDIOC_S_PRIORITY +.. c:macro:: VIDIOC_S_PRIORITY +``int ioctl(int fd, VIDIOC_S_PRIORITY, const enum v4l2_priority *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to an enum :c:type:`v4l2_priority` type. - Description =========== @@ -50,7 +43,6 @@ To request an access priority applications store the desired priority in an enum v4l2_priority variable and call :ref:`VIDIOC_S_PRIORITY <VIDIOC_G_PRIORITY>` ioctl with a pointer to this variable. - .. c:type:: v4l2_priority .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| @@ -85,7 +77,6 @@ with a pointer to this variable. it blocks any other fd from changing device properties. Usually applications which must not be interrupted, like video recording. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-selection.rst b/Documentation/userspace-api/media/v4l/vidioc-g-selection.rst index faab0454b1e4..9a9e589cce77 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-selection.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-selection.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_SELECTION: @@ -18,23 +12,22 @@ Name VIDIOC_G_SELECTION - VIDIOC_S_SELECTION - Get or set one of the selection rectangles - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_SELECTION, struct v4l2_selection *argp ) - :name: VIDIOC_G_SELECTION +.. c:macro:: VIDIOC_G_SELECTION +``int ioctl(int fd, VIDIOC_G_SELECTION, struct v4l2_selection *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_SELECTION, struct v4l2_selection *argp ) - :name: VIDIOC_S_SELECTION +.. c:macro:: VIDIOC_S_SELECTION +``int ioctl(int fd, VIDIOC_S_SELECTION, struct v4l2_selection *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_selection`. @@ -122,7 +115,6 @@ constraints. Selection targets and flags are documented in :ref:`v4l2-selections-common`. - .. _sel-const-adjust: .. kernel-figure:: constraints.svg @@ -135,7 +127,6 @@ Selection targets and flags are documented in - .. c:type:: v4l2_selection .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -175,7 +166,6 @@ Selection targets and flags are documented in Starting with kernel 4.13 both variations are allowed. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-sliced-vbi-cap.rst b/Documentation/userspace-api/media/v4l/vidioc-g-sliced-vbi-cap.rst index 7a62c4f4e37f..752f7f5fae73 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-sliced-vbi-cap.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-sliced-vbi-cap.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_SLICED_VBI_CAP: @@ -18,24 +12,22 @@ Name VIDIOC_G_SLICED_VBI_CAP - Query sliced VBI capabilities - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_SLICED_VBI_CAP, struct v4l2_sliced_vbi_cap *argp ) - :name: VIDIOC_G_SLICED_VBI_CAP +.. c:macro:: VIDIOC_G_SLICED_VBI_CAP +``int ioctl(int fd, VIDIOC_G_SLICED_VBI_CAP, struct v4l2_sliced_vbi_cap *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_sliced_vbi_cap`. - Description =========== @@ -51,7 +43,6 @@ the sliced VBI API is unsupported or ``type`` is invalid. The ``type`` field was added, and the ioctl changed from read-only to write-read, in Linux 2.6.19. - .. c:type:: v4l2_sliced_vbi_cap .. tabularcolumns:: |p{1.2cm}|p{4.2cm}|p{4.1cm}|p{4.0cm}|p{4.0cm}| @@ -127,7 +118,6 @@ the sliced VBI API is unsupported or ``type`` is invalid. See also :ref:`vbi-525` and :ref:`vbi-625`. - .. raw:: latex \scriptsize @@ -190,7 +180,6 @@ the sliced VBI API is unsupported or ``type`` is invalid. \normalsize - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-std.rst b/Documentation/userspace-api/media/v4l/vidioc-g-std.rst index 6d8cb7f29ac6..da91fe07d9e0 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-std.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-std.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_STD: @@ -18,33 +12,34 @@ Name VIDIOC_G_STD - VIDIOC_S_STD - VIDIOC_SUBDEV_G_STD - VIDIOC_SUBDEV_S_STD - Query or select the video standard of the current input - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_STD, v4l2_std_id *argp ) - :name: VIDIOC_G_STD +.. c:macro:: VIDIOC_G_STD + +``int ioctl(int fd, VIDIOC_G_STD, v4l2_std_id *argp)`` + +.. c:macro:: VIDIOC_S_STD -.. c:function:: int ioctl( int fd, VIDIOC_S_STD, const v4l2_std_id *argp ) - :name: VIDIOC_S_STD +``int ioctl(int fd, VIDIOC_S_STD, const v4l2_std_id *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_G_STD, v4l2_std_id *argp ) - :name: VIDIOC_SUBDEV_G_STD +.. c:macro:: VIDIOC_SUBDEV_G_STD -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_S_STD, const v4l2_std_id *argp ) - :name: VIDIOC_SUBDEV_S_STD +``int ioctl(int fd, VIDIOC_SUBDEV_G_STD, v4l2_std_id *argp)`` +.. c:macro:: VIDIOC_SUBDEV_S_STD + +``int ioctl(int fd, VIDIOC_SUBDEV_S_STD, const v4l2_std_id *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to :c:type:`v4l2_std_id`. - Description =========== diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-tuner.rst b/Documentation/userspace-api/media/v4l/vidioc-g-tuner.rst index 40bff6f0a88d..116e66c01556 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-g-tuner.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-g-tuner.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_G_TUNER: @@ -18,27 +12,26 @@ Name VIDIOC_G_TUNER - VIDIOC_S_TUNER - Get or set tuner attributes - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_G_TUNER, struct v4l2_tuner *argp ) - :name: VIDIOC_G_TUNER +.. c:macro:: VIDIOC_G_TUNER + +``int ioctl(int fd, VIDIOC_G_TUNER, struct v4l2_tuner *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_S_TUNER, const struct v4l2_tuner *argp ) - :name: VIDIOC_S_TUNER +.. c:macro:: VIDIOC_S_TUNER +``int ioctl(int fd, VIDIOC_S_TUNER, const struct v4l2_tuner *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_tuner`. - Description =========== @@ -66,7 +59,6 @@ to zero. The term 'tuner' means SDR receiver in this context. To change the radio frequency the :ref:`VIDIOC_S_FREQUENCY <VIDIOC_G_FREQUENCY>` ioctl is available. - .. tabularcolumns:: |p{1.3cm}|p{3.0cm}|p{6.6cm}|p{6.6cm}| .. c:type:: v4l2_tuner @@ -190,7 +182,6 @@ To change the radio frequency the Drivers and applications must set the array to zero. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. c:type:: v4l2_tuner_type @@ -214,7 +205,6 @@ To change the radio frequency the - 5 - Tuner controls the RF part of a Software Digital Radio (SDR) - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _tuner-capability: @@ -306,7 +296,6 @@ To change the radio frequency the instead of 62.5 kHz. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _tuner-rxsubchans: @@ -345,7 +334,6 @@ To change the radio frequency the - The tuner receives an RDS channel. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _tuner-audmode: diff --git a/Documentation/userspace-api/media/v4l/vidioc-log-status.rst b/Documentation/userspace-api/media/v4l/vidioc-log-status.rst index 64c06fa72b9c..c218747be762 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-log-status.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-log-status.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_LOG_STATUS: @@ -18,20 +12,18 @@ Name VIDIOC_LOG_STATUS - Log driver status information - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_LOG_STATUS) - :name: VIDIOC_LOG_STATUS +.. c:macro:: VIDIOC_LOG_STATUS +``int ioctl(int fd, VIDIOC_LOG_STATUS)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. - + File descriptor returned by :c:func:`open()`. Description =========== @@ -47,7 +39,6 @@ Mismatches may give an indication where the problem is. This ioctl is optional and not all drivers support it. It was introduced in Linux 2.6.15. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-overlay.rst b/Documentation/userspace-api/media/v4l/vidioc-overlay.rst index 74310ff486ba..f2efaaba24c0 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-overlay.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-overlay.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_OVERLAY: @@ -18,24 +12,22 @@ Name VIDIOC_OVERLAY - Start or stop video overlay - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_OVERLAY, const int *argp ) - :name: VIDIOC_OVERLAY +.. c:macro:: VIDIOC_OVERLAY +``int ioctl(int fd, VIDIOC_OVERLAY, const int *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to an integer. - Description =========== @@ -48,7 +40,6 @@ Drivers do not support :ref:`VIDIOC_STREAMON` or :ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>` with ``V4L2_BUF_TYPE_VIDEO_OVERLAY``. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-prepare-buf.rst b/Documentation/userspace-api/media/v4l/vidioc-prepare-buf.rst index b6c09d5b128f..45bb1eab2c2d 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-prepare-buf.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-prepare-buf.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_PREPARE_BUF: @@ -18,24 +12,22 @@ Name VIDIOC_PREPARE_BUF - Prepare a buffer for I/O - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_PREPARE_BUF, struct v4l2_buffer *argp ) - :name: VIDIOC_PREPARE_BUF +.. c:macro:: VIDIOC_PREPARE_BUF +``int ioctl(int fd, VIDIOC_PREPARE_BUF, struct v4l2_buffer *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_buffer`. - Description =========== @@ -48,7 +40,6 @@ in advance saves time during the actual I/O. The struct :c:type:`v4l2_buffer` structure is specified in :ref:`buffer`. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-qbuf.rst b/Documentation/userspace-api/media/v4l/vidioc-qbuf.rst index ec0a54fbeb43..fbf8c5962d8a 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-qbuf.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-qbuf.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_QBUF: @@ -18,27 +12,26 @@ Name VIDIOC_QBUF - VIDIOC_DQBUF - Exchange a buffer with the driver - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_QBUF, struct v4l2_buffer *argp ) - :name: VIDIOC_QBUF +.. c:macro:: VIDIOC_QBUF + +``int ioctl(int fd, VIDIOC_QBUF, struct v4l2_buffer *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_DQBUF, struct v4l2_buffer *argp ) - :name: VIDIOC_DQBUF +.. c:macro:: VIDIOC_DQBUF +``int ioctl(int fd, VIDIOC_DQBUF, struct v4l2_buffer *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_buffer`. - Description =========== @@ -149,13 +142,12 @@ API is used the ``m.fd`` fields of the passed array of struct By default ``VIDIOC_DQBUF`` blocks when no buffer is in the outgoing queue. When the ``O_NONBLOCK`` flag was given to the -:ref:`open() <func-open>` function, ``VIDIOC_DQBUF`` returns +:c:func:`open()` function, ``VIDIOC_DQBUF`` returns immediately with an ``EAGAIN`` error code when no buffer is available. The struct :c:type:`v4l2_buffer` structure is specified in :ref:`buffer`. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-query-dv-timings.rst b/Documentation/userspace-api/media/v4l/vidioc-query-dv-timings.rst index ab86408446f3..5afdc4b4dc2d 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-query-dv-timings.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-query-dv-timings.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_QUERY_DV_TIMINGS: @@ -18,27 +12,26 @@ Name VIDIOC_QUERY_DV_TIMINGS - VIDIOC_SUBDEV_QUERY_DV_TIMINGS - Sense the DV preset received by the current input - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_QUERY_DV_TIMINGS, struct v4l2_dv_timings *argp ) - :name: VIDIOC_QUERY_DV_TIMINGS +.. c:macro:: VIDIOC_QUERY_DV_TIMINGS + +``int ioctl(int fd, VIDIOC_QUERY_DV_TIMINGS, struct v4l2_dv_timings *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_QUERY_DV_TIMINGS, struct v4l2_dv_timings *argp ) - :name: VIDIOC_SUBDEV_QUERY_DV_TIMINGS +.. c:macro:: VIDIOC_SUBDEV_QUERY_DV_TIMINGS +``int ioctl(int fd, VIDIOC_SUBDEV_QUERY_DV_TIMINGS, struct v4l2_dv_timings *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_dv_timings`. - Description =========== @@ -72,7 +65,6 @@ and returns ``ERANGE``. In that case the application can call found timings with the hardware's capabilities in order to give more precise feedback to the user. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-querybuf.rst b/Documentation/userspace-api/media/v4l/vidioc-querybuf.rst index 646f91140ccf..6c615e893866 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-querybuf.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-querybuf.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_QUERYBUF: @@ -18,24 +12,22 @@ Name VIDIOC_QUERYBUF - Query the status of a buffer - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_QUERYBUF, struct v4l2_buffer *argp ) - :name: VIDIOC_QUERYBUF +.. c:macro:: VIDIOC_QUERYBUF +``int ioctl(int fd, VIDIOC_QUERYBUF, struct v4l2_buffer *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_buffer`. - Description =========== @@ -74,7 +66,6 @@ flags, they are meaningless in this context. The struct :c:type:`v4l2_buffer` structure is specified in :ref:`buffer`. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-querycap.rst b/Documentation/userspace-api/media/v4l/vidioc-querycap.rst index 90347367ef06..b512b1fbf9a3 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-querycap.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-querycap.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_QUERYCAP: @@ -18,24 +12,22 @@ Name VIDIOC_QUERYCAP - Query device capabilities - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_QUERYCAP, struct v4l2_capability *argp ) - :name: VIDIOC_QUERYCAP +.. c:macro:: VIDIOC_QUERYCAP +``int ioctl(int fd, VIDIOC_QUERYCAP, struct v4l2_capability *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_capability`. - Description =========== @@ -46,7 +38,6 @@ pointer to a struct :c:type:`v4l2_capability` which is filled by the driver. When the driver is not compatible with this specification the ioctl returns an ``EINVAL`` error code. - .. tabularcolumns:: |p{1.5cm}|p{2.5cm}|p{13cm}| .. c:type:: v4l2_capability @@ -139,7 +130,6 @@ specification the ioctl returns an ``EINVAL`` error code. zero. - .. tabularcolumns:: |p{6.1cm}|p{2.2cm}|p{8.7cm}| .. _device-capabilities: @@ -250,8 +240,8 @@ specification the ioctl returns an ``EINVAL`` error code. - The device supports the :ref:`metadata` capture interface. * - ``V4L2_CAP_READWRITE`` - 0x01000000 - - The device supports the :ref:`read() <rw>` and/or - :ref:`write() <rw>` I/O methods. + - The device supports the :c:func:`read()` and/or + :c:func:`write()` I/O methods. * - ``V4L2_CAP_ASYNCIO`` - 0x02000000 - The device supports the :ref:`asynchronous <async>` I/O methods. @@ -276,7 +266,6 @@ specification the ioctl returns an ``EINVAL`` error code. only appear in the ``capabilities`` field and never in the ``device_caps`` field. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst b/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst index fbb0038d86bf..9b8716f90f12 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_QUERYCTRL: @@ -18,31 +12,29 @@ Name VIDIOC_QUERYCTRL - VIDIOC_QUERY_EXT_CTRL - VIDIOC_QUERYMENU - Enumerate controls and menu control items - Synopsis ======== -.. c:function:: int ioctl( int fd, int VIDIOC_QUERYCTRL, struct v4l2_queryctrl *argp ) - :name: VIDIOC_QUERYCTRL +``int ioctl(int fd, int VIDIOC_QUERYCTRL, struct v4l2_queryctrl *argp)`` + +.. c:macro:: VIDIOC_QUERY_EXT_CTRL -.. c:function:: int ioctl( int fd, VIDIOC_QUERY_EXT_CTRL, struct v4l2_query_ext_ctrl *argp ) - :name: VIDIOC_QUERY_EXT_CTRL +``int ioctl(int fd, VIDIOC_QUERY_EXT_CTRL, struct v4l2_query_ext_ctrl *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_QUERYMENU, struct v4l2_querymenu *argp ) - :name: VIDIOC_QUERYMENU +.. c:macro:: VIDIOC_QUERYMENU +``int ioctl(int fd, VIDIOC_QUERYMENU, struct v4l2_querymenu *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_queryctrl`, :c:type:`v4l2_query_ext_ctrl` or :c:type:`v4l2_querymenu` (depending on the ioctl). - Description =========== @@ -102,7 +94,6 @@ inclusive. See also the examples in :ref:`control`. - .. tabularcolumns:: |p{1.2cm}|p{3.6cm}|p{12.7cm}| .. _v4l2-queryctrl: @@ -181,7 +172,6 @@ See also the examples in :ref:`control`. zero. - .. tabularcolumns:: |p{1.2cm}|p{5.0cm}|p{11.3cm}| .. _v4l2-query-ext-ctrl: @@ -282,7 +272,6 @@ See also the examples in :ref:`control`. the array to zero. - .. tabularcolumns:: |p{1.2cm}|p{1.0cm}|p{1.7cm}|p{13.0cm}| .. _v4l2-querymenu: @@ -318,7 +307,6 @@ See also the examples in :ref:`control`. zero. - .. tabularcolumns:: |p{5.8cm}|p{1.4cm}|p{1.0cm}|p{1.4cm}|p{6.9cm}| .. c:type:: v4l2_ctrl_type @@ -589,7 +577,6 @@ See also the examples in :ref:`control`. streaming is in progress since most drivers do not support changing the format in that case. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-querystd.rst b/Documentation/userspace-api/media/v4l/vidioc-querystd.rst index 899f0ef6eefe..4a88287d8f61 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-querystd.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-querystd.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_QUERYSTD: @@ -18,27 +12,26 @@ Name VIDIOC_QUERYSTD - VIDIOC_SUBDEV_QUERYSTD - Sense the video standard received by the current input - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_QUERYSTD, v4l2_std_id *argp ) - :name: VIDIOC_QUERYSTD +.. c:macro:: VIDIOC_QUERYSTD + +``int ioctl(int fd, VIDIOC_QUERYSTD, v4l2_std_id *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_QUERYSTD, v4l2_std_id *argp ) - :name: VIDIOC_SUBDEV_QUERYSTD +.. c:macro:: VIDIOC_SUBDEV_QUERYSTD +``int ioctl(int fd, VIDIOC_SUBDEV_QUERYSTD, v4l2_std_id *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to :c:type:`v4l2_std_id`. - Description =========== @@ -65,7 +58,6 @@ or output. standard is valid they will have to stop streaming, set the new standard, allocate new buffers and start streaming again. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst index 75d894d9c36c..c1c88e00b106 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_REQBUFS: @@ -18,19 +12,18 @@ Name VIDIOC_REQBUFS - Initiate Memory Mapping, User Pointer I/O or DMA buffer I/O - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_REQBUFS, struct v4l2_requestbuffers *argp ) - :name: VIDIOC_REQBUFS +.. c:macro:: VIDIOC_REQBUFS +``int ioctl(int fd, VIDIOC_REQBUFS, struct v4l2_requestbuffers *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_requestbuffers`. @@ -76,7 +69,6 @@ fds are closed. A ``count`` value of zero frees or orphans all buffers, after aborting or finishing any DMA in progress, an implicit :ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>`. - .. c:type:: v4l2_requestbuffers .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -112,17 +104,10 @@ aborting or finishing any DMA in progress, an implicit ``V4L2_MEMORY_MMAP`` and ``type`` set to the buffer type. This will free any previously allocated buffers, so this is typically something that will be done at the start of the application. - * - union { - - (anonymous) - * - __u32 - - ``flags`` - - Specifies additional buffer management attributes. - See :ref:`memory-flags`. * - __u32 - ``reserved``\ [1] - - Kept for backwards compatibility. Use ``flags`` instead. - * - } - - + - A place holder for future extensions. Drivers and applications + must set the array to zero. .. tabularcolumns:: |p{6.1cm}|p{2.2cm}|p{8.7cm}| @@ -169,11 +154,9 @@ aborting or finishing any DMA in progress, an implicit - This capability is set by the driver to indicate that the queue supports cache and memory management hints. However, it's only valid when the queue is used for :ref:`memory mapping <mmap>` streaming I/O. See - :ref:`V4L2_FLAG_MEMORY_NON_CONSISTENT <V4L2-FLAG-MEMORY-NON-CONSISTENT>`, :ref:`V4L2_BUF_FLAG_NO_CACHE_INVALIDATE <V4L2-BUF-FLAG-NO-CACHE-INVALIDATE>` and :ref:`V4L2_BUF_FLAG_NO_CACHE_CLEAN <V4L2-BUF-FLAG-NO-CACHE-CLEAN>`. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-s-hw-freq-seek.rst b/Documentation/userspace-api/media/v4l/vidioc-s-hw-freq-seek.rst index 4c16e7e89cfa..1948f31c2dbc 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-s-hw-freq-seek.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-s-hw-freq-seek.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_S_HW_FREQ_SEEK: @@ -18,24 +12,22 @@ Name VIDIOC_S_HW_FREQ_SEEK - Perform a hardware frequency seek - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_S_HW_FREQ_SEEK, struct v4l2_hw_freq_seek *argp ) - :name: VIDIOC_S_HW_FREQ_SEEK +.. c:macro:: VIDIOC_S_HW_FREQ_SEEK +``int ioctl(int fd, VIDIOC_S_HW_FREQ_SEEK, struct v4l2_hw_freq_seek *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_hw_freq_seek`. - Description =========== @@ -66,7 +58,6 @@ set. If this ioctl is called from a non-blocking filehandle, then ``EAGAIN`` error code is returned and no seek takes place. - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_hw_freq_seek @@ -123,7 +114,6 @@ error code is returned and no seek takes place. - Reserved for future extensions. Applications must set the array to zero. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-streamon.rst b/Documentation/userspace-api/media/v4l/vidioc-streamon.rst index 13e0136d5c25..0bc86f06947b 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-streamon.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-streamon.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_STREAMON: @@ -18,22 +12,22 @@ Name VIDIOC_STREAMON - VIDIOC_STREAMOFF - Start or stop streaming I/O - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_STREAMON, const int *argp ) - :name: VIDIOC_STREAMON +.. c:macro:: VIDIOC_STREAMON + +``int ioctl(int fd, VIDIOC_STREAMON, const int *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_STREAMOFF, const int *argp ) - :name: VIDIOC_STREAMOFF +.. c:macro:: VIDIOC_STREAMOFF +``int ioctl(int fd, VIDIOC_STREAMOFF, const int *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to an integer. @@ -91,7 +85,6 @@ state as mentioned above. no notion of starting or stopping "now". Buffer timestamps can be used to synchronize with other events. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-subdev-enum-frame-interval.rst b/Documentation/userspace-api/media/v4l/vidioc-subdev-enum-frame-interval.rst index 3527745935c7..17acf3fd8396 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-subdev-enum-frame-interval.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-subdev-enum-frame-interval.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL: @@ -18,24 +12,22 @@ Name VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL - Enumerate frame intervals - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL, struct v4l2_subdev_frame_interval_enum * argp ) - :name: VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL +.. c:macro:: VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL +``int ioctl(int fd, VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL, struct v4l2_subdev_frame_interval_enum * argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_subdev_frame_interval_enum`. - Description =========== @@ -104,7 +96,6 @@ multiple pads of the same sub-device is not defined. - Reserved for future extensions. Applications and drivers must set the array to zero. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-subdev-enum-frame-size.rst b/Documentation/userspace-api/media/v4l/vidioc-subdev-enum-frame-size.rst index eb7401991d02..8016fba7023f 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-subdev-enum-frame-size.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-subdev-enum-frame-size.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_SUBDEV_ENUM_FRAME_SIZE: @@ -18,24 +12,22 @@ Name VIDIOC_SUBDEV_ENUM_FRAME_SIZE - Enumerate media bus frame sizes - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_ENUM_FRAME_SIZE, struct v4l2_subdev_frame_size_enum * argp ) - :name: VIDIOC_SUBDEV_ENUM_FRAME_SIZE +.. c:macro:: VIDIOC_SUBDEV_ENUM_FRAME_SIZE +``int ioctl(int fd, VIDIOC_SUBDEV_ENUM_FRAME_SIZE, struct v4l2_subdev_frame_size_enum * argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_subdev_frame_size_enum`. - Description =========== @@ -69,7 +61,6 @@ current values of V4L2 controls. See :ref:`VIDIOC_SUBDEV_G_FMT` for more information about try formats. - .. c:type:: v4l2_subdev_frame_size_enum .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -110,7 +101,6 @@ information about try formats. - Reserved for future extensions. Applications and drivers must set the array to zero. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-subdev-enum-mbus-code.rst b/Documentation/userspace-api/media/v4l/vidioc-subdev-enum-mbus-code.rst index 35b8607203a4..1fd950e34a0b 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-subdev-enum-mbus-code.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-subdev-enum-mbus-code.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_SUBDEV_ENUM_MBUS_CODE: @@ -18,24 +12,22 @@ Name VIDIOC_SUBDEV_ENUM_MBUS_CODE - Enumerate media bus formats - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_ENUM_MBUS_CODE, struct v4l2_subdev_mbus_code_enum * argp ) - :name: VIDIOC_SUBDEV_ENUM_MBUS_CODE +.. c:macro:: VIDIOC_SUBDEV_ENUM_MBUS_CODE +``int ioctl(int fd, VIDIOC_SUBDEV_ENUM_MBUS_CODE, struct v4l2_subdev_mbus_code_enum * argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_subdev_mbus_code_enum`. - Description =========== @@ -54,7 +46,6 @@ other pads of the sub-device, as well as on the current active links. See :ref:`VIDIOC_SUBDEV_G_FMT` for more information about the try formats. - .. c:type:: v4l2_subdev_mbus_code_enum .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -79,11 +70,60 @@ information about the try formats. - Media bus format codes to be enumerated, from enum :ref:`v4l2_subdev_format_whence <v4l2-subdev-format-whence>`. * - __u32 - - ``reserved``\ [8] + - ``flags`` + - See :ref:`v4l2-subdev-mbus-code-flags` + * - __u32 + - ``reserved``\ [7] - Reserved for future extensions. Applications and drivers must set the array to zero. + +.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{7.7cm}| + +.. _v4l2-subdev-mbus-code-flags: + +.. flat-table:: Subdev Media Bus Code Enumerate Flags + :header-rows: 0 + :stub-columns: 0 + :widths: 1 1 2 + + * - V4L2_SUBDEV_MBUS_CODE_CSC_COLORSPACE + - 0x00000001 + - The driver allows the application to try to change the default colorspace + encoding. The application can ask to configure the colorspace of the + subdevice when calling the :ref:`VIDIOC_SUBDEV_S_FMT <VIDIOC_SUBDEV_G_FMT>` + ioctl with :ref:`V4L2_MBUS_FRAMEFMT_SET_CSC <mbus-framefmt-set-csc>` set. + See :ref:`v4l2-mbus-format` on how to do this. + * - V4L2_SUBDEV_MBUS_CODE_CSC_XFER_FUNC + - 0x00000002 + - The driver allows the application to try to change the default transform function. + The application can ask to configure the transform function of + the subdevice when calling the :ref:`VIDIOC_SUBDEV_S_FMT <VIDIOC_SUBDEV_G_FMT>` + ioctl with :ref:`V4L2_MBUS_FRAMEFMT_SET_CSC <mbus-framefmt-set-csc>` set. + See :ref:`v4l2-mbus-format` on how to do this. + * - V4L2_SUBDEV_MBUS_CODE_CSC_YCBCR_ENC + - 0x00000004 + - The driver allows the application to try to change the default Y'CbCr + encoding. The application can ask to configure the Y'CbCr encoding of the + subdevice when calling the :ref:`VIDIOC_SUBDEV_S_FMT <VIDIOC_SUBDEV_G_FMT>` + ioctl with :ref:`V4L2_MBUS_FRAMEFMT_SET_CSC <mbus-framefmt-set-csc>` set. + See :ref:`v4l2-mbus-format` on how to do this. + * - V4L2_SUBDEV_MBUS_CODE_CSC_HSV_ENC + - 0x00000004 + - The driver allows the application to try to change the default HSV + encoding. The application can ask to configure the HSV encoding of the + subdevice when calling the :ref:`VIDIOC_SUBDEV_S_FMT <VIDIOC_SUBDEV_G_FMT>` + ioctl with :ref:`V4L2_MBUS_FRAMEFMT_SET_CSC <mbus-framefmt-set-csc>` set. + See :ref:`v4l2-mbus-format` on how to do this. + * - V4L2_SUBDEV_MBUS_CODE_CSC_QUANTIZATION + - 0x00000008 + - The driver allows the application to try to change the default + quantization. The application can ask to configure the quantization of + the subdevice when calling the :ref:`VIDIOC_SUBDEV_S_FMT <VIDIOC_SUBDEV_G_FMT>` + ioctl with :ref:`V4L2_MBUS_FRAMEFMT_SET_CSC <mbus-framefmt-set-csc>` set. + See :ref:`v4l2-mbus-format` on how to do this. + Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-subdev-g-crop.rst b/Documentation/userspace-api/media/v4l/vidioc-subdev-g-crop.rst index 615e3efdf935..2d78b4f5928d 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-subdev-g-crop.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-subdev-g-crop.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_SUBDEV_G_CROP: @@ -18,27 +12,26 @@ Name VIDIOC_SUBDEV_G_CROP - VIDIOC_SUBDEV_S_CROP - Get or set the crop rectangle on a subdev pad - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_G_CROP, struct v4l2_subdev_crop *argp ) - :name: VIDIOC_SUBDEV_G_CROP +.. c:macro:: VIDIOC_SUBDEV_G_CROP + +``int ioctl(int fd, VIDIOC_SUBDEV_G_CROP, struct v4l2_subdev_crop *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_S_CROP, const struct v4l2_subdev_crop *argp ) - :name: VIDIOC_SUBDEV_S_CROP +.. c:macro:: VIDIOC_SUBDEV_S_CROP +``int ioctl(int fd, VIDIOC_SUBDEV_S_CROP, const struct v4l2_subdev_crop *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_subdev_crop`. - Description =========== @@ -83,7 +76,6 @@ rectangle doesn't match the device capabilities. They must instead modify the rectangle to match what the hardware can provide. The modified format should be as close as possible to the original request. - .. c:type:: v4l2_subdev_crop .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -108,7 +100,6 @@ modified format should be as close as possible to the original request. - Reserved for future extensions. Applications and drivers must set the array to zero. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-subdev-g-fmt.rst b/Documentation/userspace-api/media/v4l/vidioc-subdev-g-fmt.rst index 909ee9f90867..90b9bbfb61dd 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-subdev-g-fmt.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-subdev-g-fmt.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_SUBDEV_G_FMT: @@ -18,27 +12,26 @@ Name VIDIOC_SUBDEV_G_FMT - VIDIOC_SUBDEV_S_FMT - Get or set the data format on a subdev pad - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_G_FMT, struct v4l2_subdev_format *argp ) - :name: VIDIOC_SUBDEV_G_FMT +.. c:macro:: VIDIOC_SUBDEV_G_FMT + +``int ioctl(int fd, VIDIOC_SUBDEV_G_FMT, struct v4l2_subdev_format *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_S_FMT, struct v4l2_subdev_format *argp ) - :name: VIDIOC_SUBDEV_S_FMT +.. c:macro:: VIDIOC_SUBDEV_S_FMT +``int ioctl(int fd, VIDIOC_SUBDEV_S_FMT, struct v4l2_subdev_format *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_subdev_format`. - Description =========== @@ -88,7 +81,6 @@ doesn't match the device capabilities. They must instead modify the format to match what the hardware can provide. The modified format should be as close as possible to the original request. - .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_subdev_format @@ -115,7 +107,6 @@ should be as close as possible to the original request. the array to zero. - .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| .. _v4l2-subdev-format-whence: @@ -132,7 +123,6 @@ should be as close as possible to the original request. - 1 - Active formats, applied to the hardware. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-subdev-g-frame-interval.rst b/Documentation/userspace-api/media/v4l/vidioc-subdev-g-frame-interval.rst index 51e1bff797f0..3a50f8b2843d 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-subdev-g-frame-interval.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-subdev-g-frame-interval.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_SUBDEV_G_FRAME_INTERVAL: @@ -18,27 +12,26 @@ Name VIDIOC_SUBDEV_G_FRAME_INTERVAL - VIDIOC_SUBDEV_S_FRAME_INTERVAL - Get or set the frame interval on a subdev pad - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_G_FRAME_INTERVAL, struct v4l2_subdev_frame_interval *argp ) - :name: VIDIOC_SUBDEV_G_FRAME_INTERVAL +.. c:macro:: VIDIOC_SUBDEV_G_FRAME_INTERVAL + +``int ioctl(int fd, VIDIOC_SUBDEV_G_FRAME_INTERVAL, struct v4l2_subdev_frame_interval *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_S_FRAME_INTERVAL, struct v4l2_subdev_frame_interval *argp ) - :name: VIDIOC_SUBDEV_S_FRAME_INTERVAL +.. c:macro:: VIDIOC_SUBDEV_S_FRAME_INTERVAL +``int ioctl(int fd, VIDIOC_SUBDEV_S_FRAME_INTERVAL, struct v4l2_subdev_frame_interval *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_subdev_frame_interval`. - Description =========== @@ -81,7 +74,6 @@ Sub-devices that support the frame interval ioctls should implement them on a single pad only. Their behaviour when supported on multiple pads of the same sub-device is not defined. - .. c:type:: v4l2_subdev_frame_interval .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -102,7 +94,6 @@ the same sub-device is not defined. - Reserved for future extensions. Applications and drivers must set the array to zero. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-subdev-g-selection.rst b/Documentation/userspace-api/media/v4l/vidioc-subdev-g-selection.rst index 06c9553ac48f..f35b9562df21 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-subdev-g-selection.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-subdev-g-selection.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_SUBDEV_G_SELECTION: @@ -18,27 +12,26 @@ Name VIDIOC_SUBDEV_G_SELECTION - VIDIOC_SUBDEV_S_SELECTION - Get or set selection rectangles on a subdev pad - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_G_SELECTION, struct v4l2_subdev_selection *argp ) - :name: VIDIOC_SUBDEV_G_SELECTION +.. c:macro:: VIDIOC_SUBDEV_G_SELECTION + +``int ioctl(int fd, VIDIOC_SUBDEV_G_SELECTION, struct v4l2_subdev_selection *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_S_SELECTION, struct v4l2_subdev_selection *argp ) - :name: VIDIOC_SUBDEV_S_SELECTION +.. c:macro:: VIDIOC_SUBDEV_S_SELECTION +``int ioctl(int fd, VIDIOC_SUBDEV_S_SELECTION, struct v4l2_subdev_selection *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_subdev_selection`. - Description =========== @@ -65,7 +58,6 @@ There are two types of selection targets: actual and bounds. The actual targets are the targets which configure the hardware. The BOUNDS target will return a rectangle that contain all possible actual rectangles. - Discovering supported features ------------------------------ @@ -76,7 +68,6 @@ return ``EINVAL``. Selection targets and flags are documented in :ref:`v4l2-selections-common`. - .. c:type:: v4l2_subdev_selection .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| @@ -107,7 +98,6 @@ Selection targets and flags are documented in - Reserved for future extensions. Applications and drivers must set the array to zero. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/vidioc-subdev-querycap.rst b/Documentation/userspace-api/media/v4l/vidioc-subdev-querycap.rst index 0371a76321af..949d9775b03d 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-subdev-querycap.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-subdev-querycap.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_SUBDEV_QUERYCAP: @@ -18,24 +12,22 @@ Name VIDIOC_SUBDEV_QUERYCAP - Query sub-device capabilities - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_QUERYCAP, struct v4l2_subdev_capability *argp ) - :name: VIDIOC_SUBDEV_QUERYCAP +.. c:macro:: VIDIOC_SUBDEV_QUERYCAP +``int ioctl(int fd, VIDIOC_SUBDEV_QUERYCAP, struct v4l2_subdev_capability *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_subdev_capability`. - Description =========== diff --git a/Documentation/userspace-api/media/v4l/vidioc-subscribe-event.rst b/Documentation/userspace-api/media/v4l/vidioc-subscribe-event.rst index ae3ed73c0a9e..d1ad35164033 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-subscribe-event.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-subscribe-event.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _VIDIOC_SUBSCRIBE_EVENT: .. _VIDIOC_UNSUBSCRIBE_EVENT: @@ -19,34 +13,32 @@ Name VIDIOC_SUBSCRIBE_EVENT - VIDIOC_UNSUBSCRIBE_EVENT - Subscribe or unsubscribe event - Synopsis ======== -.. c:function:: int ioctl( int fd, VIDIOC_SUBSCRIBE_EVENT, struct v4l2_event_subscription *argp ) - :name: VIDIOC_SUBSCRIBE_EVENT +.. c:macro:: VIDIOC_SUBSCRIBE_EVENT + +``int ioctl(int fd, VIDIOC_SUBSCRIBE_EVENT, struct v4l2_event_subscription *argp)`` -.. c:function:: int ioctl( int fd, VIDIOC_UNSUBSCRIBE_EVENT, struct v4l2_event_subscription *argp ) - :name: VIDIOC_UNSUBSCRIBE_EVENT +.. c:macro:: VIDIOC_UNSUBSCRIBE_EVENT +``int ioctl(int fd, VIDIOC_UNSUBSCRIBE_EVENT, struct v4l2_event_subscription *argp)`` Arguments ========= ``fd`` - File descriptor returned by :ref:`open() <func-open>`. + File descriptor returned by :c:func:`open()`. ``argp`` Pointer to struct :c:type:`v4l2_event_subscription`. - Description =========== Subscribe or unsubscribe V4L2 event. Subscribed events are dequeued by using the :ref:`VIDIOC_DQEVENT` ioctl. - .. tabularcolumns:: |p{4.6cm}|p{4.4cm}|p{8.7cm}| .. c:type:: v4l2_event_subscription @@ -79,7 +71,6 @@ using the :ref:`VIDIOC_DQEVENT` ioctl. the array to zero. - .. tabularcolumns:: |p{6.8cm}|p{2.2cm}|p{8.5cm}| .. _event-flags: @@ -114,7 +105,6 @@ using the :ref:`VIDIOC_DQEVENT` ioctl. Think carefully when you set this flag so you won't get into situations like that. - Return Value ============ diff --git a/Documentation/userspace-api/media/v4l/yuv-formats.rst b/Documentation/userspace-api/media/v4l/yuv-formats.rst index 8ee92d0cd769..4a05a105a9e6 100644 --- a/Documentation/userspace-api/media/v4l/yuv-formats.rst +++ b/Documentation/userspace-api/media/v4l/yuv-formats.rst @@ -1,11 +1,4 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _yuv-formats: |
