MPEG-4多媒體應用程式CPU使用量管理工具之設計與實作
Implementation of a CPU Resource Management for MPEG-4 Applications
Date Issued
2005
Date
2005
Author(s)
Liu, Yu-Chen
DOI
en-US
Abstract
With the rapid hardware advance and the growth of broadband networks, MPEG-4 has become one of the most important international multimedia standards. Unlike the traditional frame-based multimedia standard, MPEG-4 had adopted the object-oriented methodology and integrates existing multimedia technologies, such as still images, 2D/3D graphics, animations, videos, audios, and virtual realities into its own architecture. In addition, MPEG-4 has incorporated a multimedia application platform. For this application platform, MPEG-4 has designed programmable interfaces for developers to create logical models to control different media objects. These interfaces support JavaScript and MPEG-J application interfaces, and enables easy development of all kinds of multimedia applications, such as games, E-learning, telecommunication, etc.
Since a MPEG-4 multimedia application can contain a lot of media objects and interact with them, it can be very resource-consuming, resulting in poor runtime performance. This motivates a need for system functionality and mechanism to monitor and control the underlying computing resources in order to optimize the application performance. In addition, in most of media objects, audio and video operations are resource-intensive. Therefore, there is also the need to control the runtime components such as decoders and renderers which are responsible for audio and video presentations.
In this thesis, I have designed and implemented a resource monitoring tool and a decoder/renderer adaptive control for MPEG-4 applications. In addition, I have created a CPU usage control model to coordinate different system resources for system-initiated adaptation. With these supports, MPEG-4 applications can achieve better resource efficiency and reach better performance.
Subjects
資源管理
CPU使用量
MPEG-4
Resource Management
CPU usage
Type
thesis
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