IVIDENC1_MbData Struct Reference
[XDM IVIDENC1 Video Encoder Interface]

Defines the structure that contains macroblock related encoding parameter estimates. More...

#include <ividenc1.h>

Data Fields
XDAS_Int32	mbMode
XDAS_Int32	QP
XDAS_Int32	mvFwdXY
XDAS_Int32	mvBwdXY

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Detailed Description

Defines the structure that contains macroblock related encoding parameter estimates.

Remarks:

An array of IVIDENC1_MbData is provided within the inBufs parameter to IVIDENC1_Fxns::process() when IVIDENC1_DynamicParams::mbDataFlag is set.

See also:

IVIDENC1_DynamicParams::mbDataFlag

IVIDENC1_Fxns::process()

IVIDENC1_Fxns::control()

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Field Documentation

XDAS_Int32 IVIDENC1_MbData::mbMode

MB encoding mode

Remarks:

Valid values are:

• 0x00 for skip macroblock
• 0x01 for I Frame macroblock
• 0x02 for P Frame macroblock
• 0x03 for B Frame macroblock
• 0x04 for I Field macroblock
• 0x05 for P Field macroblock
• 0x06 for B Field macroblock
• 0xFF for mbMode not specified

XDAS_Int32 IVIDENC1_MbData::QP

QP estimate.

Remarks:

A value of 0xFF for QP is not specified.

XDAS_Int32 IVIDENC1_MbData::mvFwdXY

Forward Motion vector estimate.

Remarks:

If MVx (XDAS_Int16) and MVy (XDAS_Int16) are the motion vectors in the x and y directions, in quarter pel units, then

   mvFwdXY = ((MVx & 0x0000FFFF) << 16) |
              (MVy & 0x0000FFFF);

A value of 0x7FFF7FFF to indicate mvFwdXY is not specified.

XDAS_Int32 IVIDENC1_MbData::mvBwdXY

Backward motion vector estimate.

Remarks:

The format is the same as IVIDENC1_MbData::mvFwdXY.

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The documentation for this struct was generated from the following file:

• ividenc1.h