1 .. -*- coding: utf-8; mode: rst -*-
18 .. cpp:function:: int ioctl(int fd, int request = VIDEO_SET_ID, int id)
33 - File descriptor returned by a previous call to open().
39 - Equals VIDEO_SET_ID for this command.
51 This ioctl selects which sub-stream is to be decoded if a program or
52 system stream is sent to the video device.
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.
73 - Invalid sub-stream id.