COARefTime Class
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4/8/2010
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This class converts between the Automation-compatible REFTIME type and the REFERENCE_TIME type used within and between filters.
Time parameters within the control interfaces are represented as double values, containing a fractional number of seconds.
Interfaces supported between and within filters use a 64-bit LONGLONG type containing the time in 100-nanosecond units.
Filters use this class to convert between the two formats. It is derived from CRefTime and thus is a LONGLONG, but it can be constructed from and assigned double values.
Member Functions
| Member function | Description |
|---|---|
Constructs a COARefTime object. |
Operators
| Operator | Description |
|---|---|
Returns the reference time as a double value. |
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Copy constructor for the COARefTime class. |
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Tests for equality between COARefTime objects. |
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Tests for inequality between COARefTime objects. |
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Tests if one COARefTime object is less than another COARefTime object. |
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Tests if one COARefTime object is greater than another COARefTime object. |
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Tests if one COARefTime object is less than or equal to another COARefTime object. |
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Tests if one COARefTime object is greater than or equal to another COARefTime object. |
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Adds two COARefTime objects. |
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Subtracts one COARefTime object from another COARefTime object. |
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Adds two COARefTime objects and makes this object equal to the result. |
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Subtracts one COARefTime object from another COARefTime object and makes this object equal to the result. |
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Multiplies two COARefTime objects. |
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Divides one COARefTime object by another COARefTime object. |
Requirements
| Windows Embedded CE | Windows CE 2.12 and later |
| Windows Mobile | Windows Mobile Version 5.0 and later |
| Note | Microsoft DirectShow applications and DirectShow filters have different include file and Library requirements For more information, see Setting Up the Build Environment |