呃段程式瘁是什

Hi

看一看ddk吗，说的很清楚
The KSDATAFORMAT structure is a variable-length structure that describes a data format.

typedef struct {
    ULONG FormatSize;
    ULONG Flags;
    ULONG SampleSize;
    ULONG Reserved;
    GUID MajorFormat;
    GUID SubFormat
    GUID Specifier;
} KSDATAFORMAT;
Members
FormatSize
Size in bytes of this structure. This must be at least sizeof(KSDATAFORMAT), but may be larger for specific settings of MajorFormat, SubFormat, and Specifier.

Flags
Normally set to zero.

SampleSize
The sample size of the data, for fixed sample sizes, or zero if the format has a variable sample size.

Reserved
Reserved for system use. Drivers must set this to zero.

LONGLONG 是64位
另一个是指针