Android的binder机制研究（C++部分），通过对Android媒体播放器的反向分析，给出binder的类图，并详细定义了接口类、定义和实现binder类、BnMediaPlayService代码分析-Android s binder mechanism (C++ section), the Android media player through the reverse analysis, given the binder of class diagrams, and detailed definition of the interface classes to define and implement binder class, BnMediaPlayService Code Analysis