MFCLOCK_CHARACTERISTICS_FLAGS enumeration (mfidl.h)

  • Article

Contains flags that describe the characteristics of a clock. These flags are returned by the IMFClock::GetClockCharacteristics method.

Syntax

typedef enum _MFCLOCK_CHARACTERISTICS_FLAGS {
  MFCLOCK_CHARACTERISTICS_FLAG_FREQUENCY_10MHZ = 0x2,
  MFCLOCK_CHARACTERISTICS_FLAG_ALWAYS_RUNNING = 0x4,
  MFCLOCK_CHARACTERISTICS_FLAG_IS_SYSTEM_CLOCK = 0x8
} MFCLOCK_CHARACTERISTICS_FLAGS;

Constants

 
MFCLOCK_CHARACTERISTICS_FLAG_FREQUENCY_10MHZ
Value: 0x2
The clock times returned by the IMFClock::GetCorrelatedTime method are in units of 100 nanoseconds. If this flag is absent, call IMFClock::GetProperties to get the clock frequency. The clock frequency is given in the qwClockFrequency member of the MFCLOCK_PROPERTIES structure returned by that method.
MFCLOCK_CHARACTERISTICS_FLAG_ALWAYS_RUNNING
Value: 0x4
The clock is always running. If this flag is present, the clock cannot be paused or stopped. If this flag is absent, call the IMFClock::GetState method to get the current state.
MFCLOCK_CHARACTERISTICS_FLAG_IS_SYSTEM_CLOCK
Value: 0x8
The clock times are generated from the system clock.

Requirements

Requirement Value
Minimum supported client Windows Vista [desktop apps | UWP apps]
Minimum supported server Windows Server 2008 [desktop apps | UWP apps]
Header mfidl.h

See also

Media Foundation Enumerations