Documentation/media/uapi/dvb/audio-channel-select.rst

   1 .. -*- coding: utf-8; mode: rst -*-
   2
   3 .. _AUDIO_CHANNEL_SELECT:
   4
   5 ====================
   6 AUDIO_CHANNEL_SELECT
   7 ====================
   8
   9 Name
  10 ----
  11
  12 AUDIO_CHANNEL_SELECT
  13
  14 .. attention:: This ioctl is deprecated
  15
  16 Synopsis
  17 --------
  18
  19 .. c:function:: int ioctl(int fd, AUDIO_CHANNEL_SELECT, struct *audio_channel_select)
  20     :name: AUDIO_CHANNEL_SELECT
  21
  22
  23 Arguments
  24 ---------
  25
  26 .. flat-table::
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  29
  30
  31     -
  32
  33        -  int fd
  34
  35        -  File descriptor returned by a previous call to open().
  36
  37     -
  38
  39        -  audio_channel_select_t ch
  40
  41        -  Select the output format of the audio (mono left/right, stereo).
  42
  43
  44 Description
  45 -----------
  46
  47 This ioctl is for DVB devices only. To control a V4L2 decoder use the
  48 V4L2 ``V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK`` control instead.
  49
  50 This ioctl call asks the Audio Device to select the requested channel if
  51 possible.
  52
  53
  54 Return Value
  55 ------------
  56
  57 On success 0 is returned, on error -1 and the ``errno`` variable is set
  58 appropriately. The generic error codes are described at the
  59 :ref:`Generic Error Codes <gen-errors>` chapter.