COARefTime Class
| Microsoft DirectShow 9.0 |
COARefTime Class
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The COARefTime class converts reference times between seconds and 100-nanosecond units.
This class converts between reference times that are compatible with Automation and reference times that are compatible with C/C++. Automation-compatible interfaces use double values to represent time in seconds. Other interfaces use 64-bit LONGLONG values to represent time in 100-nanosecond units. The following types are defined for these values:
typedef LONGLONG REFERENCE_TIME; typedef double REFTIME;
Filters can use the COARefTime class to convert between the two formats. This class is derived from the CRefTime class.
Requirements
** Header:** Declared in Ctlutil.h; include Streams.h.
** Library:** Use Strmbase.lib (retail builds) or Strmbasd.lib (debug builds).
| Public Methods | |
| COARefTime | Constructor method. |
| Operators | |
| double | Converts the reference time to a double value. |
| REFERENCE_TIME | Retrieves the reference time as a REFERENCE_TIME value. |
| Operator = | Assigns a new reference time. |
| Operator == | Tests for equality between two reference times. |
| Operator != | Tests for inequality between two reference times. |
| Operator < | Tests if one reference time is less than another. |
| Operator > | Tests if one reference time is greater than another. |
| Operator <= | Tests if one reference time is less than or equal to another. |
| Operator >= | Tests if one reference time is greater than or equal to another. |
| Operator + | Adds two reference times. |
| Operator – | Subtracts one reference time from another. |
| Operator += | Adds two reference times, and sets this object to the result. |
| Operator –= | Subtracts one reference time from another, and sets this object to the result. |
| Operator * | Multiplies a reference time. |
| Operator / | Divides a reference time. |