6.2.2.18. VIDEO_STILLPICTURE¶
6.2.2.18.2. Synopsis¶
-
int
ioctl(fd, VIDEO_STILLPICTURE, struct video_still_picture *sp)¶
6.2.2.18.3. Arguments¶
int fd |
File descriptor returned by a previous call to open(). |
int request |
Equals VIDEO_STILLPICTURE for this command. |
struct video_still_picture *sp |
Pointer to a location where an I-frame and size is stored. |
6.2.2.18.4. Description¶
This ioctl call asks the Video Device to display a still picture (I-frame). The input data shall contain an I-frame. If the pointer is NULL, then the current displayed still picture is blanked.
6.2.2.18.5. Return Value¶
On success 0 is returned, on error -1 and the errno variable is set
appropriately. The generic error codes are described at the
Generic Error Codes chapter.