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Linux/Documentation/userspace-api/media/v4l/querycap.rst

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Diff markup

Differences between /Documentation/userspace-api/media/v4l/querycap.rst (Version linux-6.12-rc7) and /Documentation/userspace-api/media/v4l/querycap.rst (Version linux-4.15.18)


  1 .. SPDX-License-Identifier: GFDL-1.1-no-invari    
  2                                                   
  3 .. _querycap:                                     
  4                                                   
  5 *********************                             
  6 Querying Capabilities                             
  7 *********************                             
  8                                                   
  9 Because V4L2 covers a wide variety of devices     
 10 are equally applicable to all types of devices    
 11 the same type have different capabilities and     
 12 the omission of a few complicated and less imp    
 13                                                   
 14 The :ref:`VIDIOC_QUERYCAP` ioctl is available     
 15 check if the kernel device is compatible with     
 16 query the :ref:`functions <devices>` and :ref:    
 17 supported by the device.                          
 18                                                   
 19 Starting with kernel version 3.1, :ref:`VIDIOC    
 20 will return the V4L2 API version used by the d    
 21 matches the Kernel version. There's no need of    
 22 :ref:`VIDIOC_QUERYCAP` to check if a specific     
 23 is supported, the V4L2 core now returns ``ENOT    
 24 provide support for an ioctl.                     
 25                                                   
 26 Other features can be queried by calling the r    
 27 example :ref:`VIDIOC_ENUMINPUT` to learn about    
 28 number, types and names of video connectors on    
 29 abstraction is a major objective of this API,     
 30 :ref:`VIDIOC_QUERYCAP` ioctl also allows drive    
 31 specific applications to reliably identify the    
 32                                                   
 33 All V4L2 drivers must support :ref:`VIDIOC_QUE    
 34 Applications should always call this ioctl aft    
                                                      

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