pParam2 (PQOSInfo)

      A pointer to a QOSInfo structure. This structure contains a variable length array of QOS structures. Each QOS structure contains one quality of service parameter (specified in the lQOSParmId field of the QOS structure) which is of one of the following:

      SERVICE_REQUEST

        This requests the type of service required for this stream. The lQOSValue field of the QOS structure contains the type of service: GUARANTEED, DONTCARE, or DONTRESERVE.
      MAX_EE_JITTER
        The number of stream buffers for handling jitter. Buffers needed to store a single unit of data are separate. The lQOSValue field of the QOS structure contains the number of buffers.
      MAX_DATA_RATE
        Maximum data rate in bytes per second. The lQOSValue field of the QOS structure contains this information.
      AVG_DATA_RATE
        Average data rate in bytes per second. The lQOSValue field of the QOS structure contains this information.

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