KSPROPERTY_DROPPEDFRAMES_CURRENT_S structure (ksmedia.h)

The KSPROPERTY_DROPPEDFRAMES_CURRENT_S structure describes the dropped frame information from the minidriver.

Syntax

typedef struct {
  KSPROPERTY Property;
  LONGLONG   PictureNumber;
  LONGLONG   DropCount;
  ULONG      AverageFrameSize;
} KSPROPERTY_DROPPEDFRAMES_CURRENT_S, *PKSPROPERTY_DROPPEDFRAMES_CURRENT_S;

Members

Property

Specifies an initialized KSPROPERTY structure that describes the property set, property ID, and request type.

PictureNumber

Specifies the current picture number provided by the minidriver. This value is the sum of the number of frames captured plus the number of frames dropped. Initialize or update this value on transition into KSSTATE_ACQUIRE.

DropCount

Specifies the count of dropped frames, which is provided by the minidriver. This counter increments whenever the minidriver was scheduled to capture a frame, but failed to do so, for example, because of buffer starvation. Initialize or update this value on transition into KSSTATE_ACQUIRE.

AverageFrameSize

Specifies the average size of frames captured. This value is provided by the minidriver.

Remarks

For more information about updating PictureNumber and DropCount see Capturing Video.

Requirements

See also

KSPROPERTY

KSPROPERTY_DROPPEDFRAMES_CURRENT

PROPSETID_VIDCAP_DROPPEDFRAMES