Skip to main content

Android Stagefright architecture

Stagefright is the core of android media playback framework. The class diagram below gives you high-level overview of its architecture.  The diagram can be dissembled to three groups, each answering one of the following questions:



  1. What consist of Stagefright? 
  2. How OpenMAX components can be plugged into Stagefright? 
  3. How the software encoder can be plugged into Stagefright? 




Popular posts from this blog

Android Security: An Overview Of Application Sandbox

The Problem: Define a policy to control how various clients can access different resources. A solution: Each resource has an owner and belongs to a group.Each client has an owner but can belongs to multiple groups.Each resource has a mode stating the access permissions allowed for its owner, group members and others, respectively. In the context of operating system, or Linux specifically, the resources can be files, sockets, etc; the clients are actually processes; and we have three access permissions:read, write and execute.

Java Collections Framework Cheat Sheet

Java Collections Framework (JCF) implements the Abstract Data Type  for Java platform. Every serious Java programmer should familiar himself on this topic and be able to choose the right class for a specific need.  A thorough introduction to JCF is not the target of this small article and to achieve that goal you can start with this excellent tutorial . 

Android Camera2 API Explained

Compared with the old camera API, the Camera2 API introduced in the L is a lot more complex: more than ten classes are involved, calls (almost always) are asynchronized, plus lots of capture controls and meta data that you feel confused about.