1 .. -*- coding: utf-8; mode: rst -*-
3 .. _VIDEO_SELECT_SOURCE:
18 .. cpp:function:: int ioctl(fd, int request = VIDEO_SELECT_SOURCE, video_stream_source_t source)
33 - File descriptor returned by a previous call to open().
39 - Equals VIDEO_SELECT_SOURCE for this command.
43 - video_stream_source_t source
45 - Indicates which source shall be used for the Video stream.
51 This ioctl is for DVB devices only. This ioctl was also supported by the
52 V4L2 ivtv driver, but that has been replaced by the ivtv-specific
53 ``IVTV_IOC_PASSTHROUGH_MODE`` ioctl.
55 This ioctl call informs the video device which source shall be used for
56 the input data. The possible sources are demux or memory. If memory is
57 selected, the data is fed to the video device through the write command.
63 On success 0 is returned, on error -1 and the ``errno`` variable is set
64 appropriately. The generic error codes are described at the
65 :ref:`Generic Error Codes <gen-errors>` chapter.