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- .. -*- coding: utf-8; mode: rst -*-
- .. _VIDEO_SELECT_SOURCE:
- ===================
- VIDEO_SELECT_SOURCE
- ===================
- Name
- ----
- VIDEO_SELECT_SOURCE
- .. attention:: This ioctl is deprecated.
- Synopsis
- --------
- .. c:function:: int ioctl(fd, VIDEO_SELECT_SOURCE, video_stream_source_t source)
- :name: VIDEO_SELECT_SOURCE
- Arguments
- ---------
- .. flat-table::
- :header-rows: 0
- :stub-columns: 0
- - .. row 1
- - int fd
- - File descriptor returned by a previous call to open().
- - .. row 2
- - int request
- - Equals VIDEO_SELECT_SOURCE for this command.
- - .. row 3
- - video_stream_source_t source
- - Indicates which source shall be used for the Video stream.
- Description
- -----------
- This ioctl is for Digital TV devices only. This ioctl was also supported by the
- V4L2 ivtv driver, but that has been replaced by the ivtv-specific
- ``IVTV_IOC_PASSTHROUGH_MODE`` ioctl.
- This ioctl call informs the video device which source shall be used for
- the input data. The possible sources are demux or memory. If memory is
- selected, the data is fed to the video device through the write command.
- .. c:type:: video_stream_source_t
- .. code-block:: c
- typedef enum {
- VIDEO_SOURCE_DEMUX, /* Select the demux as the main source */
- VIDEO_SOURCE_MEMORY /* If this source is selected, the stream
- comes from the user through the write
- system call */
- } video_stream_source_t;
- Return Value
- ------------
- On success 0 is returned, on error -1 and the ``errno`` variable is set
- appropriately. The generic error codes are described at the
- :ref:`Generic Error Codes <gen-errors>` chapter.
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