MACROBLOCK_DATA structure (mfapi.h)

Important

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Provides data about a macroblock during video decoding.

Syntax

typedef struct _MACROBLOCK_DATA {
  UINT32 flags;
  INT16  motionVectorX;
  INT16  motionVectorY;
  INT32  QPDelta;
} MACROBLOCK_DATA;

Members

flags

A bitwise OR combination of zero or more of the following values:

Constant	Value	Description
MACROBLOCK_FLAG_SKIP	0x00000001	The macroblock is not needed for output and can be skipped.
MACROBLOCK_FLAG_DIRTY	0x00000002	The macroblock is changed from the previous frame.
MACROBLOCK_FLAG_MOTION	0x00000004	The macroblock from the previous frame has moved to a new position.
MACROBLOCK_FLAG_VIDEO	0x00000008	The macroblock contains video playback or other continuous motion, rather than a slower moving screen capture
MACROBLOCK_FLAG_HAS_MOTION_VECTOR	0x00000010	The motion vector values of the MACROBLOCK_DATA are valid, and should be used in preference to the encoder's calculated motion vector values
MACROBLOCK_FLAG_HAS_QP	0x00000020	The QPDelta value of the MACROBLOCK_DATA is valid, and specifies the QP of this macroblock relative to the rest of the frame.

motionVectorX

The X component of the motion vector of the macroblock.

motionVectorY

The Y component of the motion vector of the macroblock.

QPDelta

The delta quantization paramater value of the macroblock.

Requirements

Requirement	Value
Header	mfapi.h