MMIOM_BEGINSTREAM - Remarks
Some of the quality of service parameters are required on each call, if
one of these is missing, an MMIOERR_UNSUPPORTED_MESSAGE error is generated.
The QOS parameters are kept as a list to allow future addition of quality
parameters. "Quality of service" is being explored by the research community.
With newer applications, changes to QOS parameters may be required. For
each of the QOS parameters, the lQOSValue is one of the following
values:
GUARANTEED
The application requests guaranteed service
and if requested QOS is unavailable, the connection is not made.
DONTCARE
The applications requests the given QOS, but if
it is unavailable, a connection may be made without quality of service reservation.
DONTRESERVE
The application
does not want guarantees, (same as no message). The remaining fields are
meaningless and not examined.
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