// strmini.h

typedef struct _HW_CLOCK_OBJECT {
  PHW_CLOCK_FUNCTION HwClockFunction;
  ULONG              ClockSupportFlags;
  ULONG              Reserved[2];
} HW_CLOCK_OBJECT, *PHW_CLOCK_OBJECT;
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Windows Driver Kit DDI reference (ns-strmini-_hw_clock_object)

_HW_CLOCK_OBJECT structure

Description

The HW_CLOCK_OBJECT structure describes the clock associated with a stream.

Members

`HwClockFunction`

Pointer to the stream's StrMiniClock routine.

`ClockSupportFlags`

Specifies which options the StrMiniClock routine supports.

CLOCK_SUPPORT_CAN_READ_ONBOARD_CLOCK

The StrMiniClock routine can return the current clock value for the stream's clock. The StrMiniClock routine must be able to handle a Function setting of TIME_READ_ONBOARD_CLOCK in the HW_TIME_CONTEXT structure passed as a parameter.

CLOCK_SUPPORT_CAN_RETURN_STREAM_TIME

The StrMiniClock routine can return the current presentation time stamp for the stream. The StrMiniClock routine must be able to handle a Function setting of TIME_GET_STREAM_TIME in the HW_TIME_CONTEXT structure passed as a parameter.

`Reserved`

Reserved for system use. Do not use.

HW_CLOCK_OBJECT - NtDoc