6.2.2.13. VIDEO_GET_FRAME_RATE¶
6.2.2.13.2. Synopsis¶
-
int
ioctl(int fd, VIDEO_GET_FRAME_RATE, unsigned int *rate)¶
6.2.2.13.3. Arguments¶
| int fd | File descriptor returned by a previous call to open(). |
| int request | Equals VIDEO_GET_FRAME_RATE for this command. |
| unsigned int *rate | Returns the framerate in number of frames per 1000 seconds. |
6.2.2.13.4. Description¶
This ioctl call asks the Video Device to return the current framerate.
6.2.2.13.5. 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.