IOUSBGetNextAssociatedDescriptorWithType
Finds the next descriptor matching a specific type within a configuration descriptor that belongs to another container descriptor.
Declaration
const IOUSBDescriptorHeader *IOUSBGetNextAssociatedDescriptorWithType(const IOUSBConfigurationDescriptor *configurationDescriptor, const IOUSBDescriptorHeader *parentDescriptor, const IOUSBDescriptorHeader *currentDescriptor, const uint8_t type);Parameters
- configurationDescriptor:
A configuration descriptor that contains the descriptors to iterate through.
- parentDescriptor:
A descriptor pointer within the bounds of the configuration descriptor.
- currentDescriptor:
A descriptor pointer within the bounds of the configuration descriptor, or
NULL. - type:
The descriptor type to find.
Return Value
A descriptor pointer, or NULL if no matching descriptor is found.
Discussion
This method uses getNextAssociatedDescriptor, and further validates that the returned descriptor’s type field matches the type parameter passed to this method.