MeeGo Architect

Layer View

The Layer view consists of three layers: User Experience, Application API, and Core OS layers.

• The user experience layer contains the UX verticals.
  It provides reference user experiences for multiple platform segments. MeeGo 1.1 contains reference user experiences for handhelds and netbooks. Additional platform segments will be supported over time.

  The User experience layer provides the Application Framework for each device profile. Netbook UX uses Clutter and MX Libraries. The Handset UX uses MeeGo Touch Framework with haptics, gestures, and input methods

• Application API layer contains the MeeGo API.
  It provides the interface for application development. The current release includes Qt 4.7, Qt mobility 1.0, Open GL ES 1.1, and Open GL ES 2.0. Additional features are under development.
  For more details, see the MeeGo API reference
• Core OS layer contains all the middleware/OS service domains and the hardware adaptation services. It includes the Linux kernel and all the middleware needed to define hardware and usage model independent API for building both native applications and web run time applications. The Hardware Adaptation API is for adapting MeeGo to support various hardware architectures.

MeeGo Core OS architecture is grouped into domains, based on functionality in that area:

• Security - Security framework and enablers
• Data Management - Meta-data storage
• Software Management - Package Management and software lifecycle
• System - Device State and Resource Policy Managmeent, Sensor, Context
• Location - Location Framework
• Graphics - X11, OpenGL, input and Display drivers
• Essentials - System essential libraries
• Multimedia - Multimedia related enablers and drivers
• Personal Information Management - Calendar, Contacts, Backup, and Sync
• Communication - VOIP, IM, Presence, Cellular Telephony, and IP Connectivity
• Qt - Qt, QtWRT, Qt Mobility
• Kernel - Linux Kernel and core drivers

Hardware Adaptation Software

There are multiple software components that a hardware vendor must provide for MeeGo to run successfully on their platform architecture, including platform kernel drivers, core architecture additions, kernel configuration, X software additions and configuration, modem support, and hardware specific media components. You can learn more about the hardware enabling process here. These specific software components are called the hardware adaptation software and are detailed below.

The MeeGo Core OS defines interfaces for platform dependent hardware. It's the responsibility of a chipset's hardware adaptation software to implement these interfaces. The hardware adaptation software is divided into to the following adaptation subsystems:

• Security
• Sensor
• Device Mode
• Haptics and Vibra
• Audio
• Camera
• Imaging and Video
• Location
• Cellular
• Connectivity
• Input
• Display and Graphics

The MeeGo Porting Guide is available to provide valuable information for porting the adaptation subsystems in MeeGo to a new device.

转载于:https://www.cnblogs.com/Cmpl/archive/2011/12/30/2307061.html