Wince Platform For Smart Phones Based On The Design Of Multimedia Systems

With the rapid development of mobile communications technology and embedded technology, today's mobile devices are no longer simply as a communication tool, and a variety of applications, in addition to mobile phone users a lot of features other than voice calls. Current smartphone multimedia applications mainly for picture browsing, audio and video, mobile games, photographs, video, GPS, online chat, etc. Although the rapid development of smart mobile multimedia terminals, but the multimedia content is still subject to copyright, a single audio and video codecs and wireless network bandwidth constraints and other issues. With the popularity of smart phones and terminals to enhance system functionality to study multimedia smart phone system design and implementation solutions to the big picture phone terminal system in the smart display problems, to support more multimedia formats, to achieve real-time video transmission and Playback of multimedia applications in the smart phone has important theoretical and practical significance.Papers on Windows CE 6.0 multimedia system related theory and technology research and analysis, and based on this, advances a multimedia applications in smartphone solutions. Requirements analysis and software based on a modular design, the entire multimedia system is divided into image browsing applications, voice and video applications and network video transmission of three modules to achieve. Photo browser application module by CxImage open source image processing libraries ported to Windows CE 6.0, the realization of the broader picture of multimedia formats supported, to support JPG, BMP, GIF, PNG, PCX, TGA, TIG and other major image formats. By setting the refresh button of the method increases the rate of reading image file, so the thumbnail is displayed smooth, user-friendly. Reduce the image by repeated solutions to the larger display problems. Audio and video application modules using Windows CE 6.0 support features in multimedia, audio and video using DirectShow Filter architecture structure system, making multimedia software has good versatility and scalability. Windows on the desktop through a variety of portable multimedia decoding Filter source code to Windows CE 6.0 platform, achieve better video and audio multimedia resources on the mainstream of popular support. Network video transmission modules uses JRTPLIB library and DirectShow RTP architecture, design and implementation of a wireless LAN-based real-time video transmission and playback. Multimedia system software design is the use of the user interface and underlying data separation of thought, so the interface and UI code to achieve functional separation of the various features of multimedia systems is divided into different modules, to facilitate system maintenance and management, and upgrade and expansion.