1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
2 .. c:namespace:: DTV.video
4 .. _VIDEO_SELECT_SOURCE:
15 .. attention:: This ioctl is deprecated.
20 .. c:macro:: VIDEO_SELECT_SOURCE
22 ``int ioctl(fd, VIDEO_SELECT_SOURCE, video_stream_source_t source)``
35 - File descriptor returned by a previous call to open().
41 - Equals VIDEO_SELECT_SOURCE for this command.
45 - video_stream_source_t source
47 - Indicates which source shall be used for the Video stream.
52 This ioctl is for Digital TV devices only. This ioctl was also supported by the
53 V4L2 ivtv driver, but that has been replaced by the ivtv-specific
54 ``IVTV_IOC_PASSTHROUGH_MODE`` ioctl.
56 This ioctl call informs the video device which source shall be used for
57 the input data. The possible sources are demux or memory. If memory is
58 selected, the data is fed to the video device through the write command.
60 .. c:type:: video_stream_source_t
65 VIDEO_SOURCE_DEMUX, /* Select the demux as the main source */
66 VIDEO_SOURCE_MEMORY /* If this source is selected, the stream
67 comes from the user through the write
69 } video_stream_source_t;
74 On success 0 is returned, on error -1 and the ``errno`` variable is set
75 appropriately. The generic error codes are described at the
76 :ref:`Generic Error Codes <gen-errors>` chapter.