ioctl(ixj1,IXJCTL_GET_FILTER_HIST, iFilter)
Return Value
Returns a 16 bit integer. Each bit represents the state of the selected filter for one 15ms half frame, the least significant Bit is the most recent half frame.
Parameters
A integer in the range 0 - 4 to indicate which filter you wish to receive the history of.
Remarks
This can be used for very strict filter detection algorithms. For simple cadence detection, it is recommended to use the IXJCTL_FILTER_CADENCE ioctl.
See Also:
IXJCTL_SET_FILTER, IXJCTL_FILTER_CADENCE
Example:
ioctl(ixj1, IXJCTL_GET_FILTER_HIST, 0);
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