Mr. Himanshu Raj Profile

Himanshu Raj

at Georgia Institute of Technology

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Proceedings Article | 28 January 2008 Paper

VMedia: enhanced multimedia services in virtualized systems

Himanshu Raj, Balasubramanian Seshasayee, Karsten Schwan

Proceedings Volume 6818, 68180N (2008) https://doi.org/10.1117/12.775139

KEYWORDS: Multimedia, Cameras, Video, Image processing, Control systems, Data communications, Operating systems, Optical filters, Sensors, Image resolution

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This paper presents the VMedia multimedia virtualization framework, for sharing media devices among multiple virtual machines (VMs). The framework provides logical media devices, exported via a well defined, higher level, multimedia access interface, to the applications and operating system running in a VM. By using semantically meaningful information, rather than low-level raw data, within the VMedia framework, efficient virtualization solutions can be created for physical devices shared by multiple VMs. Experimental results demonstrate that the base cost of virtual device access via VMedia is small compared to native physical device access, and in addition, that these costs scale well with an increasing number of guest VMs. Here, VMedia's MediaGraph abstraction is a key contributor, since it also allows the framework to support dynamic restructuring, in order to adapt device accesses to changing requirements. Finally, VMedia permits platforms to offer new and enhanced logical device functionality at lower costs than those achievable with alternative solutions.

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