KSQUALITY - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers 
// ks.h

typedef struct {
  PVOID    Context;
  ULONG    Proportion;
  LONGLONG DeltaTime;
} KSQUALITY, *PKSQUALITY;
View the official Windows Driver Kit DDI reference

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Windows Driver Kit DDI reference (ns-ks-ksquality)

KSQUALITY structure

Description

The KSQUALITY structure is used to report QM problems in both kernel and user mode to their respective quality managers.

Members

Context

Specifies a context parameter that was originally passed to the connection.

Proportion

Indicates the percentage of frames currently being received that are actually being used. This is expressed in units of one-tenth of a percent, where 1000 is optimal.

DeltaTime

Indicates the delta in native units (as indicated by the Interface) from optimal time at which the frames are being delivered, where a positive number means too late, and a negative number means too early. Zero indicates a correct delta.

View the official Windows Driver Kit DDI reference

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