data_type large_stringclasses 3
values | source large_stringclasses 29
values | code large_stringlengths 98 49.4M | filepath large_stringlengths 5 161 ⌀ | message large_stringclasses 234
values | commit large_stringclasses 234
values | subject large_stringclasses 418
values | critique large_stringlengths 101 1.26M ⌀ | metadata dict |
|---|---|---|---|---|---|---|---|---|
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _rf-tuner-controls:
**************************
RF Tuner Control Reference
**************************
The RF Tuner (RF_TUNER) class includes controls for common features of
devices having RF tuner.
In this context, RF tuner is radio ... | Documentation/userspace-api/media/v4l/ext-ctrls-rf-tuner.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _extended-controls:
*********************
Extended Controls API
*********************
Introduction
============
The control mechanism as originally designed was meant to be used for
user settings (brightness, saturation, etc). Howe... | Documentation/userspace-api/media/v4l/extended-controls.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _field-order:
***********
Field Order
***********
We have to distinguish between progressive and interlaced video.
Progressive video transmits all lines of a video image sequentially.
Interlaced video divides an image into two fields... | Documentation/userspace-api/media/v4l/field-order.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _format:
************
Data Formats
************
Data Format Negotiation
=======================
Different devices exchange different kinds of data with applications,
for example video images, raw or sliced VBI data, RDS datagrams. E... | Documentation/userspace-api/media/v4l/format.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
.. c:namespace:: V4L
Guidelines for Video4Linux pixel format 4CCs
============================================
Guidelines for Video4Linux 4CC codes defined using v4l2_fourcc() are
specified in this document. First of the characters defines the nature of
the pixel format, compressio... | Documentation/userspace-api/media/v4l/fourcc.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _func-close:
************
V4L2 close()
************
Name
====
v4l2-close - Close a V4L2 device
Synopsis
========
.. code-block:: c
#include <unistd.h>
.. c:function:: int close( int fd )
Arguments
=========
``fd``
File... | Documentation/userspace-api/media/v4l/func-close.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _func-ioctl:
************
V4L2 ioctl()
************
Name
====
v4l2-ioctl - Program a V4L2 device
Synopsis
========
.. code-block:: c
#include <sys/ioctl.h>
``int ioctl(int fd, int request, void *argp)``
Arguments
=========
... | Documentation/userspace-api/media/v4l/func-ioctl.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _func-mmap:
***********
V4L2 mmap()
***********
Name
====
v4l2-mmap - Map device memory into application address space
Synopsis
========
.. code-block:: c
#include <unistd.h>
#include <sys/mman.h>
.. c:function:: void *m... | Documentation/userspace-api/media/v4l/func-mmap.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _func-munmap:
*************
V4L2 munmap()
*************
Name
====
v4l2-munmap - Unmap device memory
Synopsis
========
.. code-block:: c
#include <unistd.h>
#include <sys/mman.h>
.. c:function:: int munmap( void *start, s... | Documentation/userspace-api/media/v4l/func-munmap.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _func-open:
***********
V4L2 open()
***********
Name
====
v4l2-open - Open a V4L2 device
Synopsis
========
.. code-block:: c
#include <fcntl.h>
.. c:function:: int open( const char *device_name, int flags )
Arguments
======... | Documentation/userspace-api/media/v4l/func-open.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _func-poll:
***********
V4L2 poll()
***********
Name
====
v4l2-poll - Wait for some event on a file descriptor
Synopsis
========
.. code-block:: c
#include <sys/poll.h>
.. c:function:: int poll( struct pollfd *ufds, unsigned... | Documentation/userspace-api/media/v4l/func-poll.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _func-read:
***********
V4L2 read()
***********
Name
====
v4l2-read - Read from a V4L2 device
Synopsis
========
.. code-block:: c
#include <unistd.h>
.. c:function:: ssize_t read( int fd, void *buf, size_t count )
Arguments... | Documentation/userspace-api/media/v4l/func-read.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _func-select:
*************
V4L2 select()
*************
Name
====
v4l2-select - Synchronous I/O multiplexing
Synopsis
========
.. code-block:: c
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
.. c:f... | Documentation/userspace-api/media/v4l/func-select.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _func-write:
************
V4L2 write()
************
Name
====
v4l2-write - Write to a V4L2 device
Synopsis
========
.. code-block:: c
#include <unistd.h>
.. c:function:: ssize_t write( int fd, void *buf, size_t count )
Argu... | Documentation/userspace-api/media/v4l/func-write.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _hist-v4l2:
***********************
Changes of the V4L2 API
***********************
Soon after the V4L API was added to the kernel it was criticised as too
inflexible. In August 1998 Bill Dirks proposed a number of improvements
and b... | Documentation/userspace-api/media/v4l/hist-v4l2.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _hsv-formats:
***********
HSV Formats
***********
These formats store the color information of the image
in a geometrical representation. The colors are mapped into a
cylinder, where the angle is the HUE, the height is the VALUE
and ... | Documentation/userspace-api/media/v4l/hsv-formats.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _io:
############
Input/Output
############
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 usi... | Documentation/userspace-api/media/v4l/io.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _libv4l-introduction:
************
Introduction
************
libv4l is a collection of libraries which adds a thin abstraction layer
on top of video4linux2 devices. The purpose of this (thin) layer is to
make it easy for application ... | Documentation/userspace-api/media/v4l/libv4l-introduction.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _libv4l:
************************
Libv4l Userspace Library
************************
.. toctree::
:maxdepth: 1
libv4l-introduction | Documentation/userspace-api/media/v4l/libv4l.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _meta-formats:
****************
Metadata Formats
****************
These formats are used for the :ref:`metadata` interface only.
.. toctree::
:maxdepth: 1
metafmt-arm-mali-c55
metafmt-c3-isp
metafmt-d4xx
metafm... | Documentation/userspace-api/media/v4l/meta-formats.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
.. _v4l2-meta-fmt-mali-c55-params:
.. _v4l2-meta-fmt-mali-c55-stats:
*****************************************************************************
V4L2_META_FMT_MALI_C55_STATS ('C55S'), V4L2_META_FMT_MALI_C55_PARAMS ('C55P')
*********************************************************... | Documentation/userspace-api/media/v4l/metafmt-arm-mali-c55.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: (GPL-2.0-only OR MIT)
.. c:namespace:: V4L
.. _v4l2-meta-fmt-c3isp-stats:
.. _v4l2-meta-fmt-c3isp-params:
***********************************************************************
V4L2_META_FMT_C3ISP_STATS ('C3ST'), V4L2_META_FMT_C3ISP_PARAMS ('C3PM')
****************************************... | Documentation/userspace-api/media/v4l/metafmt-c3-isp.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _v4l2-meta-fmt-d4xx:
*******************************
V4L2_META_FMT_D4XX ('D4XX')
*******************************
Intel D4xx UVC Cameras Metadata
Description
===========
Intel D4xx (D435, D455 and others) cameras include per-frame ... | Documentation/userspace-api/media/v4l/metafmt-d4xx.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
***********************************************************************************************************************************************************************************************************************************... | Documentation/userspace-api/media/v4l/metafmt-generic.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _v4l2-meta-fmt-params:
.. _v4l2-meta-fmt-stat-3a:
******************************************************************
V4L2_META_FMT_IPU3_PARAMS ('ip3p'), V4L2_META_FMT_IPU3_3A ('ip3s')
***************************************... | Documentation/userspace-api/media/v4l/metafmt-intel-ipu3.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
.. c:namespace:: V4L
.. _v4l2-meta-fmt-rpi-be-cfg:
************************
V4L2_META_FMT_RPI_BE_CFG
************************
Raspberry Pi PiSP Back End configuration format
===============================================
The Raspberry Pi PiSP Back End memory-to-memory image sign... | Documentation/userspace-api/media/v4l/metafmt-pisp-be.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
.. c:namespace:: V4L
.. _v4l2-meta-fmt-rpi-fe-cfg:
************************
V4L2_META_FMT_RPI_FE_CFG
************************
Raspberry Pi PiSP Front End configuration format
================================================
The Raspberry Pi PiSP Front End image signal processor i... | Documentation/userspace-api/media/v4l/metafmt-pisp-fe.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
.. c:namespace:: V4L
.. _v4l2-meta-fmt-rk-isp1-stat-3a:
************************************************************************************************************************
V4L2_META_FMT_RK_ISP1_PARAMS ('rk1p'), V4L2_META_FMT_RK_ISP1_STAT_3A ('rk1s'), V4L2_META_FMT_RK_ISP1_EXT_... | Documentation/userspace-api/media/v4l/metafmt-rkisp1.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. _v4l2-meta-fmt-uvc-msxu-1-5:
***********************************
V4L2_META_FMT_UVC_MSXU_1_5 ('UVCM')
***********************************
Microsoft(R)'s UVC Payload Metadata.
Description
===========
V4L2_META_FMT_UVC_MSXU_1_5 buffers follow the metadat... | Documentation/userspace-api/media/v4l/metafmt-uvc-msxu-1-5.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _v4l2-meta-fmt-uvc:
*******************************
V4L2_META_FMT_UVC ('UVCH')
*******************************
UVC Payload Header Data
Description
===========
This format describes standard UVC metadata, extracted from UVC packet ... | Documentation/userspace-api/media/v4l/metafmt-uvc.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _v4l2-meta-fmt-vivid:
*******************************
V4L2_META_FMT_VIVID ('VIVD')
*******************************
VIVID Metadata Format
Description
===========
This describes metadata format used by the vivid driver.
... | Documentation/userspace-api/media/v4l/metafmt-vivid.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _v4l2-meta-fmt-vsp1-hgo:
*******************************
V4L2_META_FMT_VSP1_HGO ('VSPH')
*******************************
Renesas R-Car VSP1 1-D Histogram Data
Description
===========
This format describes histogram data generated ... | Documentation/userspace-api/media/v4l/metafmt-vsp1-hgo.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _v4l2-meta-fmt-vsp1-hgt:
*******************************
V4L2_META_FMT_VSP1_HGT ('VSPT')
*******************************
Renesas R-Car VSP1 2-D Histogram Data
Description
===========
This format describes histogram data generated ... | Documentation/userspace-api/media/v4l/metafmt-vsp1-hgt.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _mmap:
******************************
Streaming I/O (Memory Mapping)
******************************
Input and output devices support this I/O method when the
``V4L2_CAP_STREAMING`` flag in the ``capabilities`` field of struct
:c:type... | Documentation/userspace-api/media/v4l/mmap.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _open:
***************************
Opening and Closing Devices
***************************
.. _v4l2_hardware_control:
Controlling a hardware peripheral via V4L2
==========================================
Hardware that is supported ... | Documentation/userspace-api/media/v4l/open.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _pixfmt-bayer:
*****************
Raw Bayer Formats
*****************
Description
===========
The raw Bayer formats are used by image sensors before much if any processing is
performed on the image. The formats contain green, red and... | Documentation/userspace-api/media/v4l/pixfmt-bayer.rst | null | null | null | null | null |
source | linux | .. -*- coding: utf-8; mode: rst -*-
.. c:namespace:: V4L
.. _V4L2-PIX-FMT-CNF4:
******************************
V4L2_PIX_FMT_CNF4 ('CNF4')
******************************
Depth sensor confidence information as a 4 bits per pixel packed array
Description
===========
Proprietary format used by Intel RealSense Depth ca... | Documentation/userspace-api/media/v4l/pixfmt-cnf4.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
******************
Compressed Formats
******************
.. _compressed-formats:
.. raw:: latex
\small
.. tabularcolumns:: |p{5.8cm}|p{1.2cm}|p{10.3cm}|
.. cssclass:: longtable
.. flat-table:: Compressed Image Formats
:head... | Documentation/userspace-api/media/v4l/pixfmt-compressed.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _pixfmt-indexed:
**************
Indexed Format
**************
In this format each pixel is represented by an 8 bit index into a 256
entry ARGB palette. It is intended for
:ref:`Video Output Overlays <osd>` only. There are no ioctls t... | Documentation/userspace-api/media/v4l/pixfmt-indexed.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
**********************
Standard Image Formats
**********************
In order to exchange images between drivers and applications, it is
necessary to have standard image data formats which both sides will
interpret the same way. V4L2 inc... | Documentation/userspace-api/media/v4l/pixfmt-intro.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _V4L2-PIX-FMT-INZI:
**************************
V4L2_PIX_FMT_INZI ('INZI')
**************************
Infrared 10-bit linked with Depth 16-bit images
Description
===========
Proprietary multi-planar format used by Intel SR300 Depth... | Documentation/userspace-api/media/v4l/pixfmt-inzi.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _V4L2-PIX-FMT-M420:
**************************
V4L2_PIX_FMT_M420 ('M420')
**************************
Format with ½ horizontal and vertical chroma resolution, also known as
YUV 4:2:0. Hybrid plane line-interleaved layout.
Descriptio... | Documentation/userspace-api/media/v4l/pixfmt-m420.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _packed-hsv:
******************
Packed HSV formats
******************
Description
===========
The *hue* (h) is measured in degrees, the equivalence between degrees and LSBs
depends on the hsv-encoding used, see :ref:`colorspaces`.
T... | Documentation/userspace-api/media/v4l/pixfmt-packed-hsv.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _packed-yuv:
******************
Packed YUV formats
******************
Similarly to the packed RGB formats, the packed YUV formats store the Y, Cb and
Cr components consecutively in memory. They may apply subsampling to the chroma
com... | Documentation/userspace-api/media/v4l/pixfmt-packed-yuv.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. _v4l2-pix-fmt-raw-cru10:
.. _v4l2-pix-fmt-raw-cru12:
.. _v4l2-pix-fmt-raw-cru14:
.. _v4l2-pix-fmt-raw-cru20:
**********************************************************************************************************************************
V4L2_PIX_FMT_RA... | Documentation/userspace-api/media/v4l/pixfmt-rawnn-cru.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _pixfmt-reserved:
***************************
Reserved Format Identifiers
***************************
These formats are not defined by this specification, they are just
listed for reference and to avoid naming conflicts. If you want ... | Documentation/userspace-api/media/v4l/pixfmt-reserved.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _pixfmt-rgb:
***********
RGB Formats
***********
These formats encode each pixel as a triplet of RGB values. They are packed
formats, meaning that the RGB values for one pixel are stored consecutively in
memory and each pixel consume... | Documentation/userspace-api/media/v4l/pixfmt-rgb.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _v4l2-sdr-fmt-cs8:
*************************
V4L2_SDR_FMT_CS8 ('CS08')
*************************
Complex signed 8-bit IQ sample
Description
===========
This format contains sequence of complex number samples. Each complex
number c... | Documentation/userspace-api/media/v4l/pixfmt-sdr-cs08.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _V4L2-SDR-FMT-CS14LE:
****************************
V4L2_SDR_FMT_CS14LE ('CS14')
****************************
Complex signed 14-bit little endian IQ sample
Description
===========
This format contains sequence of complex number sam... | Documentation/userspace-api/media/v4l/pixfmt-sdr-cs14le.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _v4l2-sdr-fmt-cu8:
*************************
V4L2_SDR_FMT_CU8 ('CU08')
*************************
Complex unsigned 8-bit IQ sample
Description
===========
This format contains sequence of complex number samples. Each complex
number... | Documentation/userspace-api/media/v4l/pixfmt-sdr-cu08.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _V4L2-SDR-FMT-CU16LE:
****************************
V4L2_SDR_FMT_CU16LE ('CU16')
****************************
Complex unsigned 16-bit little endian IQ sample
Description
===========
This format contains sequence of complex number ... | Documentation/userspace-api/media/v4l/pixfmt-sdr-cu16le.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _V4L2-SDR-FMT-PCU16BE:
******************************
V4L2_SDR_FMT_PCU16BE ('PC16')
******************************
Planar complex unsigned 16-bit big endian IQ sample
Description
===========
This format contains a sequence of compl... | Documentation/userspace-api/media/v4l/pixfmt-sdr-pcu16be.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _V4L2-SDR-FMT-PCU18BE:
******************************
V4L2_SDR_FMT_PCU18BE ('PC18')
******************************
Planar complex unsigned 18-bit big endian IQ sample
Description
===========
This format contains a sequence of compl... | Documentation/userspace-api/media/v4l/pixfmt-sdr-pcu18be.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _V4L2-SDR-FMT-PCU20BE:
******************************
V4L2_SDR_FMT_PCU20BE ('PC20')
******************************
Planar complex unsigned 20-bit big endian IQ sample
Description
===========
This format contains a sequence of compl... | Documentation/userspace-api/media/v4l/pixfmt-sdr-pcu20be.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _V4L2-SDR-FMT-RU12LE:
****************************
V4L2_SDR_FMT_RU12LE ('RU12')
****************************
Real unsigned 12-bit little endian sample
Description
===========
This format contains sequence of real number samples. ... | Documentation/userspace-api/media/v4l/pixfmt-sdr-ru12le.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _v4l2-pix-fmt-ipu3-sbggr10:
.. _v4l2-pix-fmt-ipu3-sgbrg10:
.. _v4l2-pix-fmt-ipu3-sgrbg10:
.. _v4l2-pix-fmt-ipu3-srggb10:
*****************************************************************************************************************... | Documentation/userspace-api/media/v4l/pixfmt-srggb10-ipu3.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _V4L2-PIX-FMT-SRGGB10:
.. _v4l2-pix-fmt-sbggr10:
.. _v4l2-pix-fmt-sgbrg10:
.. _v4l2-pix-fmt-sgrbg10:
***************************************************************************************************************************
V4L2_PIX_... | Documentation/userspace-api/media/v4l/pixfmt-srggb10.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _V4L2-PIX-FMT-SBGGR10ALAW8:
.. _v4l2-pix-fmt-sgbrg10alaw8:
.. _v4l2-pix-fmt-sgrbg10alaw8:
.. _v4l2-pix-fmt-srggb10alaw8:
*****************************************************************************************************************... | Documentation/userspace-api/media/v4l/pixfmt-srggb10alaw8.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _V4L2-PIX-FMT-SBGGR10DPCM8:
.. _v4l2-pix-fmt-sgbrg10dpcm8:
.. _v4l2-pix-fmt-sgrbg10dpcm8:
.. _v4l2-pix-fmt-srggb10dpcm8:
****************************************************************************************************************... | Documentation/userspace-api/media/v4l/pixfmt-srggb10dpcm8.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _V4L2-PIX-FMT-SRGGB10P:
.. _v4l2-pix-fmt-sbggr10p:
.. _v4l2-pix-fmt-sgbrg10p:
.. _v4l2-pix-fmt-sgrbg10p:
*******************************************************************************************************************************
V... | Documentation/userspace-api/media/v4l/pixfmt-srggb10p.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _V4L2-PIX-FMT-SRGGB12:
.. _v4l2-pix-fmt-sbggr12:
.. _v4l2-pix-fmt-sgbrg12:
.. _v4l2-pix-fmt-sgrbg12:
***************************************************************************************************************************
V4L2_PIX... | Documentation/userspace-api/media/v4l/pixfmt-srggb12.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _V4L2-PIX-FMT-SRGGB12P:
.. _v4l2-pix-fmt-sbggr12p:
.. _v4l2-pix-fmt-sgbrg12p:
.. _v4l2-pix-fmt-sgrbg12p:
*******************************************************************************************************************************
V... | Documentation/userspace-api/media/v4l/pixfmt-srggb12p.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _V4L2-PIX-FMT-SRGGB14:
.. _v4l2-pix-fmt-sbggr14:
.. _v4l2-pix-fmt-sgbrg14:
.. _v4l2-pix-fmt-sgrbg14:
***************************************************************************************************************************
V4L2_PIX... | Documentation/userspace-api/media/v4l/pixfmt-srggb14.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _V4L2-PIX-FMT-SRGGB14P:
.. _v4l2-pix-fmt-sbggr14p:
.. _v4l2-pix-fmt-sgbrg14p:
.. _v4l2-pix-fmt-sgrbg14p:
*******************************************************************************************************************************
V... | Documentation/userspace-api/media/v4l/pixfmt-srggb14p.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _V4L2-PIX-FMT-SRGGB16:
.. _v4l2-pix-fmt-sbggr16:
.. _v4l2-pix-fmt-sgbrg16:
.. _v4l2-pix-fmt-sgrbg16:
***************************************************************************************************************************
V4L2_PIX... | Documentation/userspace-api/media/v4l/pixfmt-srggb16.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _v4l2-pix-fmt-pisp-comp1-rggb:
.. _v4l2-pix-fmt-pisp-comp1-grbg:
.. _v4l2-pix-fmt-pisp-comp1-gbrg:
.. _v4l2-pix-fmt-pisp-comp1-bggr:
.. _v4l2-pix-fmt-pisp-comp1-mono:
.. _v4l2-pix-fmt-pisp-comp2-rggb:
.. _v4l2-pix-fmt-pisp-comp2-grbg:
... | Documentation/userspace-api/media/v4l/pixfmt-srggb8-pisp-comp.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _V4L2-PIX-FMT-SRGGB8:
.. _v4l2-pix-fmt-sbggr8:
.. _v4l2-pix-fmt-sgbrg8:
.. _v4l2-pix-fmt-sgrbg8:
***************************************************************************************************************************
V4L2_PIX_FMT_... | Documentation/userspace-api/media/v4l/pixfmt-srggb8.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _V4L2-TCH-FMT-DELTA-TD08:
********************************
V4L2_TCH_FMT_DELTA_TD08 ('TD08')
********************************
*man V4L2_TCH_FMT_DELTA_TD08(2)*
8-bit signed Touch Delta
Description
===========
This format represents ... | Documentation/userspace-api/media/v4l/pixfmt-tch-td08.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _V4L2-TCH-FMT-DELTA-TD16:
********************************
V4L2_TCH_FMT_DELTA_TD16 ('TD16')
********************************
*man V4L2_TCH_FMT_DELTA_TD16(2)*
16-bit signed little endian Touch Delta
Description
===========
This fo... | Documentation/userspace-api/media/v4l/pixfmt-tch-td16.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _V4L2-TCH-FMT-TU08:
**************************
V4L2_TCH_FMT_TU08 ('TU08')
**************************
*man V4L2_TCH_FMT_TU08(2)*
8-bit unsigned raw touch data
Description
===========
This format represents unsigned 8-bit data from ... | Documentation/userspace-api/media/v4l/pixfmt-tch-tu08.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _V4L2-TCH-FMT-TU16:
********************************
V4L2_TCH_FMT_TU16 ('TU16')
********************************
*man V4L2_TCH_FMT_TU16(2)*
16-bit unsigned little endian raw touch data
Description
===========
This format represen... | Documentation/userspace-api/media/v4l/pixfmt-tch-tu16.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _V4L2-PIX-FMT-UV8:
************************
V4L2_PIX_FMT_UV8 ('UV8')
************************
UV plane interleaved
Description
===========
In this format there is no Y plane, Only CbCr plane. ie (UV interleaved)
**Byte Order.**
... | Documentation/userspace-api/media/v4l/pixfmt-uv8.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
******************************
Multi-planar format structures
******************************
The struct :c:type:`v4l2_plane_pix_format` structures define size
and layout for each of the planes in a multi-planar format. The
struct :c:type... | Documentation/userspace-api/media/v4l/pixfmt-v4l2-mplane.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
******************************
Single-planar format structure
******************************
.. tabularcolumns:: |p{4.0cm}|p{2.6cm}|p{10.7cm}|
.. c:type:: v4l2_pix_format
.. cssclass:: longtable
.. flat-table:: struct v4l2_pix_format
... | Documentation/userspace-api/media/v4l/pixfmt-v4l2.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _V4L2-PIX-FMT-Y12I:
**************************
V4L2_PIX_FMT_Y12I ('Y12I')
**************************
Interleaved grey-scale image, e.g. from a stereo-pair
Description
===========
This is a grey-scale image with a depth of 12 bits ... | Documentation/userspace-api/media/v4l/pixfmt-y12i.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _V4L2-PIX-FMT-Y16I:
**************************
V4L2_PIX_FMT_Y16I ('Y16I')
**************************
Interleaved grey-scale image, e.g. from a stereo-pair
Description
===========
This is a grey-scale image with a depth of 16 bits ... | Documentation/userspace-api/media/v4l/pixfmt-y16i.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _V4L2-PIX-FMT-Y8I:
*************************
V4L2_PIX_FMT_Y8I ('Y8I ')
*************************
Interleaved grey-scale image, e.g. from a stereo-pair
Description
===========
This is a grey-scale image with a depth of 8 bits per ... | Documentation/userspace-api/media/v4l/pixfmt-y8i.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _yuv-luma-only:
*****************
Luma-Only Formats
*****************
This family of formats only store the luma component of a Y'CbCr image. They
are often referred to as greyscale formats.
.. note::
- In all the tables that fo... | Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. planar-yuv:
******************
Planar YUV formats
******************
Planar formats split luma and chroma data in separate memory regions. They
exist in two variants:
- Semi-planar formats use two planes. The first plane is the luma... | Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _V4L2-PIX-FMT-Z16:
*************************
V4L2_PIX_FMT_Z16 ('Z16 ')
*************************
16-bit depth data with distance values at each pixel
Description
===========
This is a 16-bit format, representing depth data. Each ... | Documentation/userspace-api/media/v4l/pixfmt-z16.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _pixfmt:
#############
Image Formats
#############
The V4L2 API was primarily designed for devices exchanging image data
with applications. The struct :c:type:`v4l2_pix_format` and
struct :c:type:`v4l2_pix_format_mplane` structures de... | Documentation/userspace-api/media/v4l/pixfmt.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _planar-apis:
*****************************
Single- and multi-planar APIs
*****************************
Some devices require data for each input or output video frame to be
placed in discontiguous memory buffers. In such cases, one v... | Documentation/userspace-api/media/v4l/planar-apis.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _querycap:
*********************
Querying Capabilities
*********************
Because V4L2 covers a wide variety of devices not all aspects of the API
are equally applicable to all types of devices. Furthermore devices of
the same typ... | Documentation/userspace-api/media/v4l/querycap.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _rw:
**********
Read/Write
**********
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_capa... | Documentation/userspace-api/media/v4l/rw.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _sdr-formats:
***********
SDR Formats
***********
These formats are used for :ref:`SDR <sdr>` interface only.
.. toctree::
:maxdepth: 1
pixfmt-sdr-cu08
pixfmt-sdr-cu16le
pixfmt-sdr-cs08
pixfmt-sdr-cs14le
pi... | Documentation/userspace-api/media/v4l/sdr-formats.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
*************
Configuration
*************
Applications can use the :ref:`selection API <VIDIOC_G_SELECTION>` to
select an area in a video signal or a buffer, and to query for default
settings and hardware limits.
Video hardware can have... | Documentation/userspace-api/media/v4l/selection-api-configuration.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
********
Examples
********
(A video capture device is assumed; change
``V4L2_BUF_TYPE_VIDEO_CAPTURE`` for other devices; change target to
``V4L2_SEL_TGT_COMPOSE_*`` family to configure composing area)
Example: Resetting the cropping par... | Documentation/userspace-api/media/v4l/selection-api-examples.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
************
Introduction
************
Some video capture devices can sample a subsection of a picture and
shrink or enlarge it to an image of arbitrary size. Next, the devices
can insert the image into larger one. Some video output devi... | Documentation/userspace-api/media/v4l/selection-api-intro.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
*****************
Selection targets
*****************
.. _sel-targets-capture:
.. kernel-figure:: selection.svg
:alt: selection.svg
:align: center
Cropping and composing targets
Targets used by a cropping, composing... | Documentation/userspace-api/media/v4l/selection-api-targets.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _selection-vs-crop:
********************************
Comparison with old cropping API
********************************
The selection API was introduced to cope with deficiencies of the
older :ref:`CROP API <crop>`, that was designed ... | Documentation/userspace-api/media/v4l/selection-api-vs-crop-api.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _selection-api:
Cropping, composing and scaling -- the SELECTION API
====================================================
.. toctree::
:maxdepth: 1
selection-api-intro.rst
selection-api-targets.rst
selection-api-con... | Documentation/userspace-api/media/v4l/selection-api.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _v4l2-selections-common:
Common selection definitions
============================
While the :ref:`V4L2 selection API <selection-api>` and
:ref:`V4L2 subdev selection APIs <v4l2-subdev-selections>` are very
similar, there's one funda... | Documentation/userspace-api/media/v4l/selections-common.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _standard:
***************
Video Standards
***************
Video devices typically support one or more different video standards or
variations of standards. Each video input and output may support another
set of standards. This set i... | Documentation/userspace-api/media/v4l/standard.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _streaming-par:
********************
Streaming Parameters
********************
Streaming parameters are intended to optimize the video capture process
as well as I/O. Presently applications can request a high quality
capture mode wit... | Documentation/userspace-api/media/v4l/streaming-par.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _v4l2-mbus-format:
Media Bus Formats
=================
.. c:type:: v4l2_mbus_framefmt
.. tabularcolumns:: |p{2.0cm}|p{4.0cm}|p{11.3cm}|
.. cssclass:: longtable
.. flat-table:: struct v4l2_mbus_framefmt
:header-rows: 0
:st... | Documentation/userspace-api/media/v4l/subdev-formats.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _tch-formats:
*************
Touch Formats
*************
These formats are used for :ref:`touch` interface only.
.. toctree::
:maxdepth: 1
pixfmt-tch-td16
pixfmt-tch-td08
pixfmt-tch-tu16
pixfmt-tch-tu08 | Documentation/userspace-api/media/v4l/tch-formats.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _tuner:
*********************
Tuners and Modulators
*********************
Tuners
======
Video input devices can have one or more tuners demodulating a RF
signal. Each tuner is associated with one or more video inputs,
depending on ... | Documentation/userspace-api/media/v4l/tuner.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _user-func:
******************
Function Reference
******************
.. toctree::
:maxdepth: 1
func-close
func-ioctl
vidioc-create-bufs
vidioc-cropcap
vidioc-dbg-g-chip-info
vidioc-dbg-g-register
vid... | Documentation/userspace-api/media/v4l/user-func.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: V4L
.. _userp:
*****************************
Streaming I/O (User Pointers)
*****************************
Input and output devices support this I/O method when the
``V4L2_CAP_STREAMING`` flag in the ``capabilities`` field of struct
:c:type:`... | Documentation/userspace-api/media/v4l/userp.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. _v4l2-isp:
************************
Generic V4L2 ISP formats
************************
Generic ISP formats are metadata formats that define a mechanism to pass ISP
parameters and statistics between userspace and drivers in V4L2 buffers. They
are designed ... | Documentation/userspace-api/media/v4l/v4l2-isp.rst | null | null | null | null | null |
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