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TUsbcScChunkHeader Class Reference

class TUsbcScChunkHeader

This class can be used to retrieve the geometry of the structures within a shared chunk, as used by RDevUsbcScClient .

Public Member Functions
	TUsbcScChunkHeader ( RChunk )
IMPORT_C TUsbcScBufferRecord *	GetBuffer ( TInt , TInt , TUsbcScHdrEndpointRecord *&)
IMPORT_C TInt	GetNumberOfEndpoints ( TInt )

Public Attributes
TUsbcScChunkAltSettingHeader *	iAltSettings
TUsbcScChunkBuffersHeader *	iBuffers

Private Attributes
RChunk	iChunk

Constructor & Destructor Documentation

TUsbcScChunkHeader(RChunk)

IMPORT_C

TUsbcScChunkHeader

(

RChunk

aChunk

)

The constructor for the TUsbcScChunkHeader class takes a RChunk object, containing USBcSc data structures, and initialises itself, so that GetNumberOfEndpoints & GetBuffer can be used to interpret the chunk structures.

Parameters

RChunk aChunk

Member Functions Documentation

GetBuffer(TInt, TInt, TUsbcScHdrEndpointRecord *&)

IMPORT_C TUsbcScBufferRecord *	GetBuffer	(	TInt	aAltSetting,
			TInt	aEndpoint,
			TUsbcScHdrEndpointRecord *&	aEndpointInf
		)

Retrieves the available information in the chunk, about the given endpoint, on the given alternate setting. The returned TUsbcScBufferRecord , represents the buffer geometry, used for for the endpoint, while the filled in TUsbcScHdrEndpointRecord represents additional endpoint information.

Parameters

TInt aAltSetting	The alternate setting, for which the provided endpoint number, is a member of.
TInt aEndpoint	The endpoint, who's buffer geometry is required.
TUsbcScHdrEndpointRecord *& aEndpointInf	The provided record is filled in with details of the endpoint, who's number was given.