Documentation/media/uapi/dvb/video-set-id.rst

   1 .. -*- coding: utf-8; mode: rst -*-
   2
   3 .. _VIDEO_SET_ID:
   4
   5 ============
   6 VIDEO_SET_ID
   7 ============
   8
   9 Name
  10 ----
  11
  12 VIDEO_SET_ID
  13
  14
  15 Synopsis
  16 --------
  17
  18 .. cpp:function:: int ioctl(int fd, int request = VIDEO_SET_ID, int id)
  19
  20
  21 Arguments
  22 ---------
  23
  24 .. flat-table::
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  27
  28
  29     -  .. row 1
  30
  31        -  int fd
  32
  33        -  File descriptor returned by a previous call to open().
  34
  35     -  .. row 2
  36
  37        -  int request
  38
  39        -  Equals VIDEO_SET_ID for this command.
  40
  41     -  .. row 3
  42
  43        -  int id
  44
  45        -  video sub-stream id
  46
  47
  48 Description
  49 -----------
  50
  51 This ioctl selects which sub-stream is to be decoded if a program or
  52 system stream is sent to the video device.
  53
  54
  55 Return Value
  56 ------------
  57
  58 On success 0 is returned, on error -1 and the ``errno`` variable is set
  59 appropriately. The generic error codes are described at the
  60 :ref:`Generic Error Codes <gen-errors>` chapter.
  61
  62
  63
  64 .. flat-table::
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  67
  68
  69     -  .. row 1
  70
  71        -  ``EINVAL``
  72
  73        -  Invalid sub-stream id.