video-stillpicture.rst (1201B)
1.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later 2.. c:namespace:: DTV.video 3 4.. _VIDEO_STILLPICTURE: 5 6================== 7VIDEO_STILLPICTURE 8================== 9 10Name 11---- 12 13VIDEO_STILLPICTURE 14 15.. attention:: This ioctl is deprecated. 16 17Synopsis 18-------- 19 20.. c:macro:: VIDEO_STILLPICTURE 21 22``int ioctl(fd, VIDEO_STILLPICTURE, struct video_still_picture *sp)`` 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_STILLPICTURE for this command. 42 43 - .. row 3 44 45 - struct video_still_picture \*sp 46 47 - Pointer to a location where an I-frame and size is stored. 48 49Description 50----------- 51 52This ioctl call asks the Video Device to display a still picture 53(I-frame). The input data shall contain an I-frame. If the pointer is 54NULL, then the current displayed still picture is blanked. 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.