video-get-capabilities.rst (1183B)
1.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later 2.. c:namespace:: DTV.video 3 4.. _VIDEO_GET_CAPABILITIES: 5 6====================== 7VIDEO_GET_CAPABILITIES 8====================== 9 10Name 11---- 12 13VIDEO_GET_CAPABILITIES 14 15.. attention:: This ioctl is deprecated. 16 17Synopsis 18-------- 19 20.. c:macro:: VIDEO_GET_CAPABILITIES 21 22``int ioctl(fd, VIDEO_GET_CAPABILITIES, unsigned int *cap)`` 23 24Arguments 25--------- 26 27.. flat-table:: 28 :header-rows: 0 29 :stub-columns: 0 30 31 - .. row 1 32 33 - int fd 34 35 - File descriptor returned by a previous call to open(). 36 37 - .. row 2 38 39 - int request 40 41 - Equals VIDEO_GET_CAPABILITIES for this command. 42 43 - .. row 3 44 45 - unsigned int \*cap 46 47 - Pointer to a location where to store the capability information. 48 49Description 50----------- 51 52This ioctl call asks the video device about its decoding capabilities. 53On success it returns and integer which has bits set according to the 54defines in section ??. 55 56Return Value 57------------ 58 59On success 0 is returned, on error -1 and the ``errno`` variable is set 60appropriately. The generic error codes are described at the 61:ref:`Generic Error Codes <gen-errors>` chapter.