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1、AbstractAbstractAsanewgenerationofinternationalvideocompressioncodingstandard,theH.264standard,withitscodingefficiency,anti-BERcapacity,networkadaptabilityandotherareas,playsanincreasingroleinthedigitaltelevisionbroadcasting,real-timevideocommunication,netw
2、orkvideostreamingtransmissionandotheraspects.Atpresent,manycompaniesandresearchinstitutionsarestudyingvideoequipmentproductswhicharebasedontheH.264codingstandard.Butwithitshighcompressionefficiency,theH.264standardalsobroughtahighcodingcomplexity.Ordinarypr
3、ociessingplatformhasbeenunabletomeettheneedsofthiscomplexity,thusdifficulttoachievethereal-timeimagecompressionrequirements,whichbecomeitswiderapplicationbottlenecks.Digitalsignalprocessor(DSP)’srapiddevelopmentandcontnuouslyupgradedperformance,whichprovide
4、thepossibilityofachieveefficientaudioandvideosignalprocessing.TI’sC64xchiphasastrongaudioandvideosignalprocessingcapabilities,andbecometheidealplatformfortheH.264codec.Inthispaper,theissueoftransplantationandoptimizationofH.264encoderontheDSPplatformarestud
5、ied.Themainwork:WestudiedtheH.264videocodingstandard’scodingstructureandcodingtheory,theprincipleandachievementofeachmodule,andthekeytechnologyused.Then,thealgorithmoftheH.264open-sourcemodelX264conductedin-depthresearchandanalysed,wedividedthecodingprocess
6、intofourlevels:sequenceofthegrouplayer,sequencelayer,slicelayerandmaroblocklayer,analyzedthelevelofthekeyfunctionmodules,andgivestheflowchartofthesefunctions.Then,theTMS320DM642hardwareplatform’sstructureandperformance,thefeaturesofexperimentalevaluationboa
7、rdarestudied,alsothestructureandfunctionofthesoftwaredevelopmentenvironmentCCS.Wediscussedthesoftwaredevelopmentprocessing,andtheissueswhichshouldpayattentiontointhesoftwaredevelopment.Then,theX264proceduresarecarriedoutontheTMS320DM642intransplantationIIAb
8、stractandoptimization.Beforetransplantation,weneedtopayattentiontothoseproblemssuchasthedifferencesofdatatypebetweenClanguageandCCS,storagesystemsandorder,thefloating-pointoperationsandsoon.Also,accord
