video-clear-buffer.rst (929B)
1.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later 2.. c:namespace:: DTV.video 3 4.. _VIDEO_CLEAR_BUFFER: 5 6================== 7VIDEO_CLEAR_BUFFER 8================== 9 10Name 11---- 12 13VIDEO_CLEAR_BUFFER 14 15.. attention:: This ioctl is deprecated. 16 17Synopsis 18-------- 19 20.. c:macro:: VIDEO_CLEAR_BUFFER 21 22``int ioctl(fd, VIDEO_CLEAR_BUFFER)`` 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_CLEAR_BUFFER for this command. 42 43Description 44----------- 45 46This ioctl call clears all video buffers in the driver and in the 47decoder hardware. 48 49Return Value 50------------ 51 52On success 0 is returned, on error -1 and the ``errno`` variable is set 53appropriately. The generic error codes are described at the 54:ref:`Generic Error Codes <gen-errors>` chapter.