基于ADSPBF533的H.264解码器的优化实现

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1、西南交通大学硕士学位论文基于ADSP-BF533的H.264解码器的优化实现姓名：黄跃申请学位级别：硕士专业：交通信息工程及控制指导教师：彭强20080401西南交通大学硕士研究生学位论文第VI页AbstractAlongwithIntemetinglobalscopedailypopularization，swiftandviolentdevelopmentofmobilecommunication，thedemandsofmultimediaserviceofrealizedbythenetwork

2、transmissionisincreasingallthetime．Manynewrequestshavebeensetarrangedtotheencodinganddecodingtechnologyofvideo．Howtoprovidethehigherandmoresteadytransmissionqualitybecomehotspotininformationscienceandthetechnicalresearch．Thispaperrealizesthereal·timedeco

3、derofH．264basedonDSP,referringtotheJM8．6code．、Firstly,thispaperpresentthebackgroundofvideotechnology,thedevelopmentofDSPs(Digitalsignalprocessors)andtheDSPs'sapplicationsofvideo．WealsopresentthecharacteristicsoftheBlackfinADSP—BF533DSEAttheoo聆toADSPBF533

4、processorproducedbyADICompany,paperconstructthedecoderoftheH．264,accordingtothecharacteristicofADSPBF533，itoptimizestheAlgodthmofH．264BaselineProfileDecoder,prepareslinkdescriptionfile，doesOptimalallocationtoCacheusingConversionoperations，andfinishthedec

5、oderonPCplatform．Onthisbasis，itstandardizesdatatype，changesgrammars，andrealizesthetransplantationofH．264decoderfromPCplatformtoDSPplatform．Againsttherequestofreal—timeapplication，thepaperanalyzeseverycomponentsofthedecoder．ItgivestheOptimizationSoftwareS

6、eriesofdecoderbasedonreferencemodelJM8．6．Inentropymodule，resolutecodetable，changesthewayofsearclL,cannoticeablyimprovestheefficiencylookup，andthenimprovestheoperatingspeed．Interpolationscene，minimizationreferenceframedatacanconservethebandwidthofmemorych

7、ipinlumapixelinterpolationalgorithm．Theexecutioncanbeimprovedbyremovingredundantcodeandvoidjudgmentandbigpriorityprobabilityjudgment．Finally,thedecoderhasbeentestedonthedevelopmentboardADSP—BF533EZ—KITLITE．Thetestdatashowsthedecoderreal·timedecodingresul

8、tsofOCIFformathasachieved．KeyWords：BlackfinH．264DecoderCAVLCInterpolation西南交通大学曲南父逋大字学位论文版权使用授权书本学位论文作者完全了解学校有关保留、使用学位论文的规定，同意学校保留并向国家有关部门或机构送交论文复印件和电子版，允许论文被查阅和借阅。本人授权西南交通大学可以将本学位论文的全部或部分内容编入有关数据库进行检索，可以采用影印、缩印或扫描等复制手段保存和