public static extern MmResult acmStreamUnprepareHeader(
IntPtr hAcmStream, // HACMSTREAM has
[In, Out] AcmStreamHeaderStruct streamHeader, // LPACMSTREAMHEADER pash
int fdwUnprepare // DWORD fdwUnprepare
);
public static extern MmResult acmStreamConvert(
IntPtr hAcmStream, // HACMSTREAM has
[In, Out] AcmStreamHeaderStruct streamHeader, // LPACMSTREAMHEADER pash
int fdwConvert // DWORD fdwConvert
);