C# Class LibUsbDotNet.Main.UsbTransferQueue

Helper class for maintaining a user defined number of outstanding aync transfers on an endpoint.

Public Properties

Method	Description
Free ( ) : void	Cancels and frees all oustanding transfers.
Transfer ( Handle &handle ) : ErrorCode	Submits transfers until MaxOutstandingIO is reached then waits for the oldest transfer to complete.
UsbTransferQueue ( UsbEndpointBase endpointBase, int maxOutstandingIO, int bufferSize, int timeout, int isoPacketSize ) : System	Creates a new transfer queue instance.
this ( int index ) : byte[]	Gets the transfer data buffer at the specified index.

Method	Description
IncWithRoll ( int &incField, int rollOverValue ) : void
free ( UsbTransferQueue transferParam ) : void
transfer ( UsbTransferQueue transferParam, Handle &handle ) : ErrorCode

Cancels and frees all oustanding transfers.

public Free ( ) : void
return	void

Submits transfers until MaxOutstandingIO is reached then waits for the oldest transfer to complete.

public Transfer ( Handle &handle ) : ErrorCode
handle	Handle	The queue handle to the that completed.
return	ErrorCode

Creates a new transfer queue instance.

public UsbTransferQueue ( UsbEndpointBase endpointBase, int maxOutstandingIO, int bufferSize, int timeout, int isoPacketSize ) : System
endpointBase	UsbEndpointBase	The endpoint to transfer data to/from.
maxOutstandingIO	int	The number of transfers to before waiting for a completion.
bufferSize	int	The size of each data buffer.
timeout	int	The maximum time to wait for each transfer.
isoPacketSize	int	For isochronous use only. The iso packet size. If 0, the endpoints max packet size is used.
return	System

Gets the transfer data buffer at the specified index.

public this ( int index ) : byte[]
index	int	The index of the buffer to retrieve.
return	byte[]

Size (in bytes) of each data buffer in this transfer queue.

public int BufferSize
return	int

Endpoint for I/O operations.

public UsbEndpointBase,LibUsbDotNet.Main EndpointBase
return	UsbEndpointBase

For isochronous use only. The iso packet size.

public int IsoPacketSize
return	int

Maximum outstanding I/O operations before waiting for a completion. This is also the number of data buffers allocated for this transfer queue.

public int MaxOutstandingIO
return	int

Time (in milliseconds) to wait for a transfer to complete before returning ErrorCode.IoTimedOut.

public int Timeout
return	int