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KS_AMVPDATAINFO structure (ksmedia.h)

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The KS_AMVPDATAINFO structure is used to describe the properties of a video port.

Syntax

typedef struct tagKS_AMVPDATAINFO {
  DWORD          dwSize;
  DWORD          dwMicrosecondsPerField;
  KS_AMVPDIMINFO amvpDimInfo;
  DWORD          dwPictAspectRatioX;
  DWORD          dwPictAspectRatioY;
  BOOL           bEnableDoubleClock;
  BOOL           bEnableVACT;
  BOOL           bDataIsInterlaced;
  LONG           lHalfLinesOdd;
  BOOL           bFieldPolarityInverted;
  DWORD          dwNumLinesInVREF;
  LONG           lHalfLinesEven;
  DWORD          dwReserved1;
} KS_AMVPDATAINFO, *PKS_AMVPDATAINFO;

Members

dwSize

Specifies the size of the structure, in bytes.

dwMicrosecondsPerField

Specifies the time taken by each field, in microseconds (millionths of a second).

amvpDimInfo

Describes the dimensional information of the video port, such as field and VBI dimensions.

dwPictAspectRatioX

Indicates the picture aspect ratio in the horizontal dimension. For example, for a 16x9 aspect ratio this member would be 16.

dwPictAspectRatioY

Indicates the picture aspect ratio in the vertical dimension. For example, for a 4x3 aspect ratio this member would be 3.

bEnableDoubleClock

Specifies if the video port should enable double clocking.

bEnableVACT

Specifies if the video port should use an external VACT signal.

bDataIsInterlaced

Indicates that the signal is interlaced.

lHalfLinesOdd

Indicates the number of halflines in the odd field.

bFieldPolarityInverted

Indicates if the device inverts the field polarity by default.

dwNumLinesInVREF

Specifies the number of lines of data in VREF.

lHalfLinesEven

Indicates the number of halflines in the even field.

dwReserved1

Reserved for future use. Do not use.

Remarks

This structure is used by the KSPROPERTY_VPCONFIG_VPDATAINFO property.

Requirements

Requirement Value
Header ksmedia.h (include Ksmedia.h)

See also

KSPROPERTY_VPCONFIG_VPDATAINFO