## MMPM/2 Device Driver Reference

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### VSD_AUDIODATATYPE_PARMS Field - ulFlags

ulFlags (ULONG) Flags indicating which fields are to be queried or modified . The VSD_AUDIODATATYPE_PARMS structure must contain at least one of the following flags.

Note: More than one flag can be specified.

VSD_MODE Set/query mode.

VSD_CHANNELS Set/query channels.

VSD_SAMPLESPERSEC Set/query sampling rate.

VSD_BITSPERSAMPLE Set/query bits per sample.

VSD_OPERATION Set/query VSD operation field.