1 .. Permission is granted to copy, distribute and/or modify this
2 .. document under the terms of the GNU Free Documentation License,
3 .. Version 1.1 or any later version published by the Free Software
4 .. Foundation, with no Invariant Sections, no Front-Cover Texts
5 .. and no Back-Cover Texts. A copy of the license is included at
6 .. Documentation/media/uapi/fdl-appendix.rst.
8 .. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
10 .. _VIDEO_SELECT_SOURCE:
21 .. attention:: This ioctl is deprecated.
26 .. c:function:: int ioctl(fd, VIDEO_SELECT_SOURCE, video_stream_source_t source)
27 :name: VIDEO_SELECT_SOURCE
42 - File descriptor returned by a previous call to open().
48 - Equals VIDEO_SELECT_SOURCE for this command.
52 - video_stream_source_t source
54 - Indicates which source shall be used for the Video stream.
60 This ioctl is for Digital TV devices only. This ioctl was also supported by the
61 V4L2 ivtv driver, but that has been replaced by the ivtv-specific
62 ``IVTV_IOC_PASSTHROUGH_MODE`` ioctl.
64 This ioctl call informs the video device which source shall be used for
65 the input data. The possible sources are demux or memory. If memory is
66 selected, the data is fed to the video device through the write command.
68 .. c:type:: video_stream_source_t
73 VIDEO_SOURCE_DEMUX, /* Select the demux as the main source */
74 VIDEO_SOURCE_MEMORY /* If this source is selected, the stream
75 comes from the user through the write
77 } video_stream_source_t;
82 On success 0 is returned, on error -1 and the ``errno`` variable is set
83 appropriately. The generic error codes are described at the
84 :ref:`Generic Error Codes <gen-errors>` chapter.