The HAL Interface Description Language (HIDL) specifies the
interface between a HAL and its users. It defines types and method
calls, collected into interfaces and packages. HIDL is a system for
communicating between codebases that may be compiled independently
and is intended for inter-process communication. See the
A HAL defines a standard interface for hardware vendors to implement,
which enables Android to be agnostic about lower-level driver
implementations. Using a HAL allows you to implement functionality
without affecting or modifying the higher level system. For an
overview, see the HAL guide.
A continuous test framework designed for running tests on Android
devices. It's a Java application which runs on a host computer, and
communicates to one or more Android devices using ddmlib over adb.
For details, see the
Trade Federation Overview.