Documentation/media/uapi/dvb/audio-set-mute.rst

   1 .. -*- coding: utf-8; mode: rst -*-
   2
   3 .. _AUDIO_SET_MUTE:
   4
   5 ==============
   6 AUDIO_SET_MUTE
   7 ==============
   8
   9 Name
  10 ----
  11
  12 AUDIO_SET_MUTE
  13
  14
  15 Synopsis
  16 --------
  17
  18 .. cpp:function:: int  ioctl(int fd, int request = AUDIO_SET_MUTE, boolean state)
  19
  20
  21 Arguments
  22 ---------
  23
  24 .. flat-table::
  25     :header-rows:  0
  26     :stub-columns: 0
  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 AUDIO_SET_MUTE for this command.
  40
  41     -  .. row 3
  42
  43        -  boolean state
  44
  45        -  Indicates if audio device shall mute or not.
  46
  47     -  .. row 4
  48
  49        -
  50        -  TRUE Audio Mute
  51
  52     -  .. row 5
  53
  54        -
  55        -  FALSE Audio Un-mute
  56
  57
  58 Description
  59 -----------
  60
  61 This ioctl is for DVB devices only. To control a V4L2 decoder use the
  62 V4L2 :ref:`VIDIOC_DECODER_CMD` with the
  63 ``V4L2_DEC_CMD_START_MUTE_AUDIO`` flag instead.
  64
  65 This ioctl call asks the audio device to mute the stream that is
  66 currently being played.
  67
  68
  69 Return Value
  70 ------------
  71
  72 On success 0 is returned, on error -1 and the ``errno`` variable is set
  73 appropriately. The generic error codes are described at the
  74 :ref:`Generic Error Codes <gen-errors>` chapter.