1*4882a593Smuzhiyun.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later 2*4882a593Smuzhiyun.. c:namespace:: DTV.video 3*4882a593Smuzhiyun 4*4882a593Smuzhiyun.. _VIDEO_SELECT_SOURCE: 5*4882a593Smuzhiyun 6*4882a593Smuzhiyun=================== 7*4882a593SmuzhiyunVIDEO_SELECT_SOURCE 8*4882a593Smuzhiyun=================== 9*4882a593Smuzhiyun 10*4882a593SmuzhiyunName 11*4882a593Smuzhiyun---- 12*4882a593Smuzhiyun 13*4882a593SmuzhiyunVIDEO_SELECT_SOURCE 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun.. attention:: This ioctl is deprecated. 16*4882a593Smuzhiyun 17*4882a593SmuzhiyunSynopsis 18*4882a593Smuzhiyun-------- 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun.. c:macro:: VIDEO_SELECT_SOURCE 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun``int ioctl(fd, VIDEO_SELECT_SOURCE, video_stream_source_t source)`` 23*4882a593Smuzhiyun 24*4882a593SmuzhiyunArguments 25*4882a593Smuzhiyun--------- 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun.. flat-table:: 28*4882a593Smuzhiyun :header-rows: 0 29*4882a593Smuzhiyun :stub-columns: 0 30*4882a593Smuzhiyun 31*4882a593Smuzhiyun - .. row 1 32*4882a593Smuzhiyun 33*4882a593Smuzhiyun - int fd 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun - File descriptor returned by a previous call to open(). 36*4882a593Smuzhiyun 37*4882a593Smuzhiyun - .. row 2 38*4882a593Smuzhiyun 39*4882a593Smuzhiyun - int request 40*4882a593Smuzhiyun 41*4882a593Smuzhiyun - Equals VIDEO_SELECT_SOURCE for this command. 42*4882a593Smuzhiyun 43*4882a593Smuzhiyun - .. row 3 44*4882a593Smuzhiyun 45*4882a593Smuzhiyun - video_stream_source_t source 46*4882a593Smuzhiyun 47*4882a593Smuzhiyun - Indicates which source shall be used for the Video stream. 48*4882a593Smuzhiyun 49*4882a593SmuzhiyunDescription 50*4882a593Smuzhiyun----------- 51*4882a593Smuzhiyun 52*4882a593SmuzhiyunThis ioctl is for Digital TV devices only. This ioctl was also supported by the 53*4882a593SmuzhiyunV4L2 ivtv driver, but that has been replaced by the ivtv-specific 54*4882a593Smuzhiyun``IVTV_IOC_PASSTHROUGH_MODE`` ioctl. 55*4882a593Smuzhiyun 56*4882a593SmuzhiyunThis ioctl call informs the video device which source shall be used for 57*4882a593Smuzhiyunthe input data. The possible sources are demux or memory. If memory is 58*4882a593Smuzhiyunselected, the data is fed to the video device through the write command. 59*4882a593Smuzhiyun 60*4882a593Smuzhiyun.. c:type:: video_stream_source_t 61*4882a593Smuzhiyun 62*4882a593Smuzhiyun.. code-block:: c 63*4882a593Smuzhiyun 64*4882a593Smuzhiyun typedef enum { 65*4882a593Smuzhiyun VIDEO_SOURCE_DEMUX, /* Select the demux as the main source */ 66*4882a593Smuzhiyun VIDEO_SOURCE_MEMORY /* If this source is selected, the stream 67*4882a593Smuzhiyun comes from the user through the write 68*4882a593Smuzhiyun system call */ 69*4882a593Smuzhiyun } video_stream_source_t; 70*4882a593Smuzhiyun 71*4882a593SmuzhiyunReturn Value 72*4882a593Smuzhiyun------------ 73*4882a593Smuzhiyun 74*4882a593SmuzhiyunOn success 0 is returned, on error -1 and the ``errno`` variable is set 75*4882a593Smuzhiyunappropriately. The generic error codes are described at the 76*4882a593Smuzhiyun:ref:`Generic Error Codes <gen-errors>` chapter. 77