IOUSBGetUSB20ExtensionDeviceCapabilityDescriptor
Finds the first USB 2.0 extension capability descriptor in a BOS descriptor.
Declaration
const IOUSBDeviceCapabilityUSB2Extension *IOUSBGetUSB20ExtensionDeviceCapabilityDescriptor(const IOUSBBOSDescriptor *bosDescriptor);Parameters
- bosDescriptor:
The BOS descriptor that contains the descriptors to iterate through.
Return Value
The descriptor pointer, or NULL if no matching descriptor can be found.
Discussion
This method uses getNextCapabilityDescriptorWithType to fetch the first USB20ExtensionCapabilityDescriptor.