typedef struct mediaspace_adpcmwaveformat_tag {
        WAVEFORMATEX    wfx;
        WORD    wRevision;
} MEDIASPACEADPCMWAVEFORMAT;

typedef MEDIASPACEADPCMWAVEFORMAT           *PMEDIASPACEADPCMWAVEFORMAT;

typedef MEDIASPACEADPCMWAVEFORMAT NEAR     *NPMEDIASPACEADPCMWAVEFORMAT;

typedef MEDIASPACEADPCMWAVEFORMAT FAR      *LPMEDIASPACEADPCMWAVEFORMAT;