IOUSBGetEndpointMaxStreamsEncoded(_:_:_:)

Declaration

func IOUSBGetEndpointMaxStreamsEncoded(_ usbDeviceSpeed: UInt32, _ descriptor: UnsafePointer<IOUSBEndpointDescriptor>!, _ companionDescriptor: UnsafePointer<IOUSBSuperSpeedEndpointCompanionDescriptor>!) -> UInt32

Parameters

• usbDeviceSpeed:

  The operational speed of the device.

• descriptor:

  The endpoint descriptor to parse.

• companionDescriptor:

  The companion descriptor to parse.

Return Value

The encoded number of streams.

Discussion

This method parses endpoint descriptors and returns the number of supported streams as n in (2^n).

See Also

Endpoint Descriptor Parsing

• IOUSBGetNextEndpointDescriptor(_:_:_:)
• IOUSBGetEndpointDirection(_:)
• IOUSBGetEndpointAddress(_:)
• IOUSBGetEndpointNumber(_:)
• IOUSBGetEndpointType(_:)
• IOUSBGetEndpointMaxPacketSize(_:_:)
• IOUSBGetEndpointIntervalEncodedMicroframes(_:_:)
• IOUSBGetEndpointIntervalMicroframes(_:_:)
• IOUSBGetEndpointIntervalFrames(_:_:)
• IOUSBGetEndpointMaxStreams(_:_:_:)