InputQPSettings structure (mfapi.h)

Describes the Quantization Parameter (QP) map settings that a video encoder MFT accepts as input.

Syntax

typedef struct _inputQPSettings {
  UINT32                          minBlockSize;
  UINT32                          maxBlockSize;
  UINT32                          stepsBlockSize;
  eAVEncVideoQPMapElementDataType dataType;
  INT16                           minValue;
  INT16                           maxValue;
  UINT16                          step;
} InputQPSettings;

Members

minBlockSize

The minimum block size granularity at which the MFT can accept QP values.

maxBlockSize

The maximum block size granularity at which the MFT can accept QP values.

stepsBlockSize

An incremental step that can be added to minBlockSize to produce a block size. The resulting block size must be within the range [minBlockSize, maxBlockSize]. Zero is a possible value for stepsBlockSize which implies that minBlockSize and maxBlockSize are the only allowed values for the block size.

dataType

A value from the AVEncVideoQPMapElementDataType specifying the data width and the signed nature of the QP min and max values.

minValue

This value represents the minimum QP value accepted by the video encoder MFT. Any entry within such a QP map must be greater than or equal to minValue.

maxValue

This value represents the maximum QP value accepted by the video encoder MFT. Any entry within such a QP map must be less than or equal to maxValue.

step

An incremental step that can be added to minValue to produce a QP value. The resulting QP value must be within the range [minValue, maxValue]. Zero is a possible value for step, which implies that minValue and maxValue are the only allowed values for the QP value.

Remarks

This structure provides data for the CODECAPI_AVEncVideoInputAbsoluteQPBlockSettings and CODECAPI_AVEncVideoInputDeltaQPBlockSettings properties.

Requirements

Requirement	Value
Header	mfapi.h