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The IMiniportMidiStream interface represents the MIDI stream that flows through a pin on a MIDI filter. The filter wraps a MIDI synthesizer or capture device and is implemented by pairing a MIDI port driver with a MIDI miniport driver. The miniport driver implements the IMiniportMidiStream interface and exposes it to the port driver. The port driver creates a stream object with this interface by calling the miniport driver's IMiniportMidi::NewStream method. IMiniportMidiStream inherits from the IUnknown interface.
This interface provides methods for reading and writing a MIDI stream and for setting the format and state of a MIDI stream.
Inheritance
The IMiniportMidiStream interface inherits from the IUnknown interface.
Methods
The IMiniportMidiStream interface has these methods.
| IMiniportMidiStream::Read The Read method reads data from an incoming MIDI stream. |
| IMiniportMidiStream::SetFormat The SetFormat method sets the KS data format of the MIDI stream. |
| IMiniportMidiStream::SetState The SetState method sets the stream's transport state to a new state value. |
| IMiniportMidiStream::Write The Write method writes data to an outgoing MIDI stream. |
Requirements
| Requirement | Value |
|---|---|
| Target Platform | Windows |
| Header | portcls.h |