18c2ecf20Sopenharmony_ci.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later 28c2ecf20Sopenharmony_ci.. c:namespace:: DTV.video 38c2ecf20Sopenharmony_ci 48c2ecf20Sopenharmony_ci.. _VIDEO_SELECT_SOURCE: 58c2ecf20Sopenharmony_ci 68c2ecf20Sopenharmony_ci=================== 78c2ecf20Sopenharmony_ciVIDEO_SELECT_SOURCE 88c2ecf20Sopenharmony_ci=================== 98c2ecf20Sopenharmony_ci 108c2ecf20Sopenharmony_ciName 118c2ecf20Sopenharmony_ci---- 128c2ecf20Sopenharmony_ci 138c2ecf20Sopenharmony_ciVIDEO_SELECT_SOURCE 148c2ecf20Sopenharmony_ci 158c2ecf20Sopenharmony_ci.. attention:: This ioctl is deprecated. 168c2ecf20Sopenharmony_ci 178c2ecf20Sopenharmony_ciSynopsis 188c2ecf20Sopenharmony_ci-------- 198c2ecf20Sopenharmony_ci 208c2ecf20Sopenharmony_ci.. c:macro:: VIDEO_SELECT_SOURCE 218c2ecf20Sopenharmony_ci 228c2ecf20Sopenharmony_ci``int ioctl(fd, VIDEO_SELECT_SOURCE, video_stream_source_t source)`` 238c2ecf20Sopenharmony_ci 248c2ecf20Sopenharmony_ciArguments 258c2ecf20Sopenharmony_ci--------- 268c2ecf20Sopenharmony_ci 278c2ecf20Sopenharmony_ci.. flat-table:: 288c2ecf20Sopenharmony_ci :header-rows: 0 298c2ecf20Sopenharmony_ci :stub-columns: 0 308c2ecf20Sopenharmony_ci 318c2ecf20Sopenharmony_ci - .. row 1 328c2ecf20Sopenharmony_ci 338c2ecf20Sopenharmony_ci - int fd 348c2ecf20Sopenharmony_ci 358c2ecf20Sopenharmony_ci - File descriptor returned by a previous call to open(). 368c2ecf20Sopenharmony_ci 378c2ecf20Sopenharmony_ci - .. row 2 388c2ecf20Sopenharmony_ci 398c2ecf20Sopenharmony_ci - int request 408c2ecf20Sopenharmony_ci 418c2ecf20Sopenharmony_ci - Equals VIDEO_SELECT_SOURCE for this command. 428c2ecf20Sopenharmony_ci 438c2ecf20Sopenharmony_ci - .. row 3 448c2ecf20Sopenharmony_ci 458c2ecf20Sopenharmony_ci - video_stream_source_t source 468c2ecf20Sopenharmony_ci 478c2ecf20Sopenharmony_ci - Indicates which source shall be used for the Video stream. 488c2ecf20Sopenharmony_ci 498c2ecf20Sopenharmony_ciDescription 508c2ecf20Sopenharmony_ci----------- 518c2ecf20Sopenharmony_ci 528c2ecf20Sopenharmony_ciThis ioctl is for Digital TV devices only. This ioctl was also supported by the 538c2ecf20Sopenharmony_ciV4L2 ivtv driver, but that has been replaced by the ivtv-specific 548c2ecf20Sopenharmony_ci``IVTV_IOC_PASSTHROUGH_MODE`` ioctl. 558c2ecf20Sopenharmony_ci 568c2ecf20Sopenharmony_ciThis ioctl call informs the video device which source shall be used for 578c2ecf20Sopenharmony_cithe input data. The possible sources are demux or memory. If memory is 588c2ecf20Sopenharmony_ciselected, the data is fed to the video device through the write command. 598c2ecf20Sopenharmony_ci 608c2ecf20Sopenharmony_ci.. c:type:: video_stream_source_t 618c2ecf20Sopenharmony_ci 628c2ecf20Sopenharmony_ci.. code-block:: c 638c2ecf20Sopenharmony_ci 648c2ecf20Sopenharmony_ci typedef enum { 658c2ecf20Sopenharmony_ci VIDEO_SOURCE_DEMUX, /* Select the demux as the main source */ 668c2ecf20Sopenharmony_ci VIDEO_SOURCE_MEMORY /* If this source is selected, the stream 678c2ecf20Sopenharmony_ci comes from the user through the write 688c2ecf20Sopenharmony_ci system call */ 698c2ecf20Sopenharmony_ci } video_stream_source_t; 708c2ecf20Sopenharmony_ci 718c2ecf20Sopenharmony_ciReturn Value 728c2ecf20Sopenharmony_ci------------ 738c2ecf20Sopenharmony_ci 748c2ecf20Sopenharmony_ciOn success 0 is returned, on error -1 and the ``errno`` variable is set 758c2ecf20Sopenharmony_ciappropriately. The generic error codes are described at the 768c2ecf20Sopenharmony_ci:ref:`Generic Error Codes <gen-errors>` chapter. 77