Davinci平台(DM644x)软件编程培训.ppt

DaVinci SoftwareOverview Acronyms API ApplicationProgrammingInterfaceAPL ApplicationLayerEPSI EasyPeripheralSoftwareInterfaceHWAL HardwareAdaptationLayerOSAL OperatingSystemAdaptationLayerSPL SignalProcessingLayerVISA Video Imaging SpeechandAudioxDM eXpressDSPDigitalMediaInterface SoftwareChallengestoBuildingaVideoProduct OS Drivers Middleware GUI HumanFactorsInterface ValueAdd CustomerProductIdea Codecs Video Imaging Speech Audio DaVinci SoftwareOfferings OptimizedforDigitalVideoInnovation DigitalMediaCodecs H 264MPEG4H 263WMV9VC1MPEG2JPEGAAC HE AAC LCWMA9WMA8MP3G 711G 728G 723 1G 729ab SignalProcessingLibraries CodecKernelsFIR IIR DM644x SoftwareOverview DriverstightlyintegratedintoOSInput outputusingCamera LCD HDD Networking etc KernelSpace SignalProcessingLayer ApplicationLayer ADSPImagethatconsistsof CodecsCodecengineDSP BIOS Inter processorcommunications CustomerValue AddedDifferentiation Input OutputAPIs Gstreamer FFMPEG OpenHelix MPlayer OpenSource OpenSourceSoftware UserSpace SimplifiedEmbeddedVideo TIProvides Customer 3PCreates LinuxDrivers DSPExecutable CustomerValue AddedDifferentiation ApplicationLayer SignalProcessingLayer KernelSpace Input OutputAPIs Codecs DM644x SoftwareStack ARMSubsystem DSPSubsystem UserSpace KernelSpace ApplicationLayer APL Transport SignalProcessingLayer SPL ImageCodingJPEG Centraloffice ControlModule ApplicationLayer VideoCapture Imagequality Bit ratecontrol Imagesizecontrol Pre after motionrecoding VideoCodingMPEG4SPH 263BPH 264BP TCP UDP IP B W 21Mbytes sD1 30FPSYUV422 B W 16Mbytes sD1 30FPSYUV420 B W 16Mbytes sD1 30FPSYUV422 B W 2Mbits s B W 12Mbits s AudioCapture B W 96Kbytes s mono B W 32Kbits s Dataflow Controlflow Bandwidth Customercomponents BasicIPcamera LeveragingDaVinci Software Videopre processingDe interlacing Input Output SignalProcessing ApplicationProcessing Input Output Networkingmodule HTTP RTP RTSP AudioCodingAAC WMA IntelligentIPcamera DM644x SoftwareOverview DriverstightlyintegratedintoOSInput outputusingCamera LCD HDD Networking etc KernelSpace SignalProcessingLayer ApplicationLayer CustomerValue AddedDifferentiation Input OutputAPIs UserSpace ADSPImagethatconsistsof CodecsCodecengineDSP BIOS Interprocessorcommunications BuildingaDSPExecutableWithaConfigureKit out DSPExecutable Image ConfigKit eXpressDSP DigitalMedia xDM InterfaceCompatiblesupersetextensiontotheeXpressDSPalgorithmstandard xDAIS WhenadifferentxDMAlgorithmisused nochangesareneededattheapplicationlayerEnablesvaryinglevelsofabstractionfromDSPmultimediaprocessingfunctionalityNodependenciesonDSP BIOS Link xDMcodecscanworkinanyframeworkMultipleoptionsfordeliveryandflexibilityalacarteOptimizedCombinationsCompleteDSPexecutableFullsystemsolution CodecsforDaVinci Technologyhaveflexibleinterfaces Codecs DigitalMediaCodecRoadmap OldCodecRoadmap CodecEngineisTI sPowerfulandFlexibleFrameworkforCodecExecution VISAAPIs TheCodecEngineprovidesastandardsoftwareplatformforalgorithmexecutionRobustTestedwithnumerouscodeccombinationsEasytouseEnablesoneAPIforeachclassofcodecswithVISAAPICanuseanyxDMcompliantcodecsEnablescodecstoberemotelyexecutedieonDSPCodecscanrunontheARMorDSPwithsameAPIpresentedtouserPowerfulPackagesalltheunderlyingcomponentsoftwaretoenablemulti algorithmcombinationsAllowsmultiplecodecs combostoberunSingleormultiplecodecscanbeinstantiatedforeachalgorithmtypeCodecEngineincludesVISAAPIstointerfacewithxDMcompliantcodecsSupportsxDMalgorithmclassesVideo Imaging Speech Audio VISAAPIsEnableEncode Decode andAlgorithmControl Eightinterfacesbasedonfourclassesofmultimediaalgorithms video image speech audio andfunctionality encode decode IIMG ENCIIMG DEC IVID ENCIVID DEC VISA IAUD ENCIAUD DEC ISPH ENCISPH DEC Figure2 GenericinterfacedefinesbyxMI Twofunctionsforeachinterface process control CodecEngine CreateaDSPExecutablewithConfigurationGuide DocumentationandexamplebuildscriptEnablesTI customers and3rdpartiestobuildcustomcombinationsofalgorithmsNoDSPcodingrequiredBuildslibrariesintoaDSPexecutablewithamakefileParametersavailabletocontrolmemoryplacementUsesTIcodecengineframeworktoroutedatatomultimediaalgorithmsCreatesaDSPAVexecutableVISAinterfaceisexposedtotheapplicationlayer DSP BIOS BuildingaCustomDSPAVExecutable VISAAPIs Inter ProcessorCommunication Link DSP BIOSLinkHostComponent UserSpace OldSlide notconsistentwithFeb15thversionofTRSforDVEVM DVDP DefinedcombinationsofcodecstosupportkeymarketrequirementsAdditionalexecutableswillbeavailableovertime basedonmarketdemand3rdpartieswillbeenabledwiththetoolstocreatecustomDSPAVexecutables DSPAVExecutablesfromTI DefinedcombinationsofcodecstosupportkeymarketrequirementsAdditionalexecutableswillbeavailableovertime basedonmarketdemand3rdpartieswillbeenabledwiththetoolstocreatecustomDSPAVexecutables DSPEXECUTABLES IncludedwithDVEVM H 264BPencode decode H 264BPencode G 711encode MPEG 4SPencode G 711encode H 264BPdecode AACLCdecode MPEG 4SPdecode G 711decode JPEGencode decode MoreDSPAVexecutablecombinationstocome DSP BIOS BuildingaCustomDSPAVExecutable VISAAPIs Inter ProcessorCommunication Link DSP BIOSLinkHostComponent UserSpace CustomDSPAVExecutable H 264dec AACdecAAC WMA9enc dec VideoEncoderalgorithm Inter ProcessorCommunication Link DSP BIOS OpenSoftwareArchitectureonDSPandARM VIVAInterface APIs MultipleoptionstotapintoDSPperformancePre builtDSPexecutableCustombundleofcodecsCustomIPalongwithcodecsDifferentlevelsofabstractionfordifferentusers DSPAVExecutablePre builtbyTIor3rdpartiesCustombuiltw CodecEngineCodecsw customframework DM644x SoftwareOverview DriverstightlyintegratedintoOSInput outputusingCamera LCD HDD Networking etc KernelSpace SignalProcessingLayer ApplicationLayer CustomerValue AddedDifferentiation Input OutputAPIs UserSpace ADSPImagethatconsistsof CodecsCodecengineDSP BIOS Interprocessorcommunications OptimizedLinuxBSP Linux2 6 10baseportforDM644xEVM baseduponMontaVistakernel DriversSerial UART I2C SPIStorage ATA NAND MMCNetwork 10 100Ethernet EMAC CPMAC USB Massstorage HostandGadgetdriversAudio OSSAudiodriverVideo V4L2forCaptureandFBDev DirectFBforDisplayUBoot1 1 3 boot loader OSAdaptationLayerenablesIPCLinktomultipleOperatingsystems ARMSubsystem DSPSubsystem OSAdaptationLayer LINKdriver drivers DSP BIOS DSPApplication WinCEOSAdaptationLayer LINKdriver DSP BIOSLinkAPI OperatingSystem Linux WinCE HostApplication BIOSLinksoftwaredesignedtosupportmultipleOS sFirstimplementationofDSP BIOSLinkwillincludeOSALforLinuxPrOSBIOS Linkportingguideoutlinesstepsrequiredtopor