1.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later 2.. c:namespace:: DTV.video 3 4.. _VIDEO_FAST_FORWARD: 5 6================== 7VIDEO_FAST_FORWARD 8================== 9 10Name 11---- 12 13VIDEO_FAST_FORWARD 14 15.. attention:: This ioctl is deprecated. 16 17Synopsis 18-------- 19 20.. c:macro:: VIDEO_FAST_FORWARD 21 22``int ioctl(fd, VIDEO_FAST_FORWARD, int nFrames)`` 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_FAST_FORWARD for this command. 42 43 - .. row 3 44 45 - int nFrames 46 47 - The number of frames to skip. 48 49Description 50----------- 51 52This ioctl call asks the Video Device to skip decoding of N number of 53I-frames. This call can only be used if VIDEO_SOURCE_MEMORY is 54selected. 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. 62 63 64.. flat-table:: 65 :header-rows: 0 66 :stub-columns: 0 67 68 - .. row 1 69 70 - ``EPERM`` 71 72 - Mode VIDEO_SOURCE_MEMORY not selected. 73