1 .. -*- coding: utf-8; mode: rst -*-
18 .. cpp:function:: int ioctl(int fd, int request = AUDIO_SET_MUTE, boolean state)
33 - File descriptor returned by a previous call to open().
39 - Equals AUDIO_SET_MUTE for this command.
45 - Indicates if audio device shall mute or not.
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.
65 This ioctl call asks the audio device to mute the stream that is
66 currently being played.
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.