H.264-based Android Platform Streaming Media Decoder Research And Design

With the development of information technology in China, there are a lots of way to get information. Our national network of technology, especially the development of wireless network technology quickly brought a lot of convenience for people to be able to obtain information. People are very conveniently access to the wireless network in many public places, and the third generation mobile communication technology-3G network has quickly become the important part of people’s lives. High-speed networking capabilities of the3G network also makes streaming media technology to accelerate the pace of development. Streaming media technology based on a variety of smart phones are the in-depth study.This article is mainly to do the depth research on Android platform, and H.264encoding and decoding technology. has completed the the H.264decoder transplant in Android platform. And take advantage of the Android platform software features,make the optimization of H.264decoder code after transplantation. Make the H.264decoding work well in the Android platform. This article was mainly to complete the there parts work.H.264decoder transplant. This system mainly uses FFmpeg. FFmpeg is developed on the PC, its main application of the system is used in the PC system. The system has overcomed the differences between the two different platforms, and achieved H.264transplant work. The most important thing is to overcome the two platforms of different programming languages, different hardware capabilities.H.264decoder optimization. The decoding operation is to be achieved in H.264/AVC decoding process,including an entropy decoding module, motion compensation module, the deblocking filter module, inverse transform and inverse quantization operations module. Deblocking filtering algorithm calculation accounts for encoding in the decoding process, in which the largest proportion of the total calculated amount of1/3, which also is the best important part of this thesis. In this paper, wo do the most work on the Deblocking filter optimization work.Android platform implementations of the H.264decoder. This software is a major research Wuhua District Public Security Bureau of Yunnan Province video surveillance system. Has achieved in Android smart mobile terminal of video stream and displays, including a list of surveillance video acquisition, monitoring real-time playback, video images show the proportional control, video surveillance save video transmission, PTZ full range of mobile (PTZ).