1 .. -*- coding: utf-8; mode: rst -*-
3 .. _VIDEO_STILLPICTURE:
18 .. cpp:function:: int ioctl(fd, int request = VIDEO_STILLPICTURE, struct video_still_picture *sp)
33 - File descriptor returned by a previous call to open().
39 - Equals VIDEO_STILLPICTURE for this command.
43 - struct video_still_picture \*sp
45 - Pointer to a location where an I-frame and size is stored.
51 This ioctl call asks the Video Device to display a still picture
52 (I-frame). The input data shall contain an I-frame. If the pointer is
53 NULL, then the current displayed still picture is blanked.
59 On success 0 is returned, on error -1 and the ``errno`` variable is set
60 appropriately. The generic error codes are described at the
61 :ref:`Generic Error Codes <gen-errors>` chapter.