KS_VBIINFOHEADER structure (ksmedia.h)
The KS_VBIINFOHEADER structure describes raw vertical blanking interval (VBI) streams.
Syntax
typedef struct tagKS_VBIINFOHEADER {
ULONG StartLine;
ULONG EndLine;
ULONG SamplingFrequency;
ULONG MinLineStartTime;
ULONG MaxLineStartTime;
ULONG ActualLineStartTime;
ULONG ActualLineEndTime;
ULONG VideoStandard;
ULONG SamplesPerLine;
ULONG StrideInBytes;
ULONG BufferSize;
} KS_VBIINFOHEADER, *PKS_VBIINFOHEADER;
Members
StartLine
Specifies the line number of the first digitized VBI line.
EndLine
Specifies the line number of the last digitized VBI line.
SamplingFrequency
Specifies the sampling frequency in hertz (Hz).
MinLineStartTime
Specifies the shortest possible interval from the leading edge of H-sync in 10-nanosecond units (that is, in hundredths of microseconds).
MaxLineStartTime
Specifies the longest possible interval from the leading edge of H-sync in 10-nanosecond units (that is, in hundredths of microseconds).
ActualLineStartTime
Specifies the actual starting point of VBI digitization from the leading edge of H-sync in 10-nanosecond units (that is, in hundredths of microseconds).
ActualLineEndTime
Specifies the actual ending point for VBI digitization from the leading edge of H-sync in 10-nanosecond units (that is, in hundredths of microseconds).
VideoStandard
Specifies one or more (logically ORed) values from the KS_AnalogVideoStandard enumeration.
SamplesPerLine
Specifies the number of samples digitized per video line.
StrideInBytes
Specifies the stride in bytes between the first sample on a given line and the first sample on the next line. This value can be larger than SamplesPerLine.
BufferSize
Specifies the size in bytes of the buffer to store the entire digitized VBI signal.
Remarks
VBI streams are usually converted to NABTS, CC, and WST streams by downstream filters.
Requirements
| Requirement | Value |
|---|---|
| Header | ksmedia.h (include Ksmedia.h) |