Dissertation > Excellent graduate degree dissertation topics show

The Research and Realization of H.264 Based Onandroid

Author: ZhuZongWei
Tutor: MaYouMing
School: Anhui University of Engineering
Course: Applied Computer Technology
Keywords: Android Opencore Driver FFmpeg Transplant Optimization
CLC: TN919.81
Type: Master's thesis
Year: 2011
Downloads: 107
Quote: 0
Read: Download Dissertation

Abstract


Nowadays, along with the development of science and technology, Technology of communication and Internet have developed in high speed. People depend on technology and hope that technology can bring more and more convenience to them. So smart-phone has been realised. Because of development of 3G, the development of smart-phone must satisfy people’s requirement(ringing、web、email、navigation、browsing information、video TV that handset is used as playing media and monitoring and so on), thus smart-phone will play a leading role in the trade of handset. This field may have enormous trade prospect.Because people have need of stream-media information by using handsets and immediacy that handsets running applications higher, so it is necessary that handsets must have function that handsets can handle more clear stream-media files.Porting and optimizing the advanced H.264 decoder in smartphone is the key technology in the realizing of mobile video application.This article carries out the porting and optimizing method in algorism and code two ways.Aiming at the demand of H.264 application in Android platform,the paper carries out research and development on H.264, the work I have done is as following:(1) Firstly, the paper analyses the present research situation on smartphone and H.264, analyses and compares some different smartphone systems.The paper has done detailed description on the architecture of Android.Simple analyse has been done aimed at the embedded development system and how to build exploit environment.(2) The paper analyses some main modules including the actual process of intra prediction and inter prediction mode、technical principles and processes of DCT and the linkages and differences between various profiles.Optimizing key algorithms is for enhancing the performance of H.264 decoder.(3) Definition of the interface for target board jz4750 about Opencore have been done. during reading and writting data of multimedia, it is necessary to operate the data in the storage device, how to improve the speed of reading and writing of data is important, as NANDFLASH is mainly used as data storage device in the paper, so I put forward optimization and design concerning the driver of NANDFLASH in process of reading and writting data.(4) At last,aiming at some limition(restricted resources、small memory、the complexity on operating float and so on) in exploiting,the paper also optimizes according with hardware and code. In the paper, I transplant FFmpeg to Android. because it is only the necessary to support data of H.264, so we should cut off some functions that I don’t need,we can save some system resources.In the end,the paper realizes the decoder porting in Android platform and shows the result.

Related Dissertations

  1. Development of the Platform for Compressor Optimization Design and Aerodynamic Optimization Design in the Transonic Compressor,TH45
  2. Investigation of Turbine S2 Stream Surface Direct Problem Aerodynamic Optimization Design,V235.11
  3. The Design and Optimization of Locomotive Signal Testing System Based on ARM9,U284.91
  4. Reseach on Optimal Control of Elevator Group Based upon Ant Colony Algorithm,TU857
  5. Research on High Efficiency Interior Permanent Magnet Synchronous Motor,TM341
  6. Well Detection Pump Steady-Speed Driving System of Brushless DC Motor,TM33
  7. Application of Interior-Point Theory for Reactive Power Optimization in Large Power Systems,TM714.3
  8. The Basic Research of Axial Flux Inductor Type High Temperature Superconducting Motor,TM37
  9. The Optimization of AVS Video Decoder on the PC Platform and Improvement of Field Decoding,TN919.81
  10. Research on Stability of Hierarchical Sattellite Network,TN927.23
  11. Research on High-Performance Computer I/O Bus,TP336
  12. Query Processing and Optimization in Massive Multi-Database Integration,TP311.13
  13. Research on Feature Extraction and Classification of Tongue Shape and Tooth-Marked Tongue in TCM Tongue Diagnosis,TP391.41
  14. Research on Real-Time Performance of Computer Numerical Control System Based on Windows,TG659
  15. Studies on Fermentation Optimization, Purification and Enzyme Characteristics of Lipase from Aspergillus Oryzae FS-1,TQ925.6
  16. Large the Hongshan iron ore mine personnel tracking positioning system optimization study,TN929.5
  17. Computing Minimum Distance between Curves/Surfaces Based on PSO Algorithm,O182
  18. Analysis of Nutritional Compositions and Quality of Shishen (Eremurus Chinensis Fedtsch.),S647
  19. Signal Acquisition and Processing Platform Design and Implementation of Trawl Sonar System,S951.2
  20. The Design and Research of Health Management Based on Smartphone Environment,TN929.53
  21. 1 - deoxynojirimycin synthetic route design and process optimization,TQ463.5

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Image communication, multimedia communication > Image coding
© 2012 www.DissertationTopic.Net  Mobile