《Davinci平台(DM644x)软件编程培训》.ppt

DaVinci? Software Overview Acronyms API = Application Programming Interface APL = Application Layer EPSI = Easy Peripheral Software Interface HWAL = Hardware Adaptation Layer OSAL = Operating System Adaptation Layer SPL = Signal Processing Layer VISA = Video, Imaging, Speech and Audio xDM = eXpressDSP Digital Media Interface Software Challenges to Building a Video Product DaVinci? Software Offerings DM644x? Software Overview Simplified Embedded Video  DM644x? Software Stack BasicIP camera  DM644x? Software Overview Building a DSP ExecutableWith a Configure Kit Codecs for DaVinci? Technology have flexible interfaces eXpressDSP? Digital Media ( xDM ) Interface Compatible superset extension to the eXpressDSP algorithm standard (xDAIS) When a different xDM Algorithm is used, no changes are needed at the application layer Enables varying levels of abstraction from DSP multimedia processing functionality No dependencies on DSP/BIOS, Link - xDM codecs can work in any framework Multiple options for delivery and flexibility a la carte Optimized Combinations Complete DSP executable Full system solution Digital Media Codec Roadmap Old Codec Roadmap Codec Engine is TI’s Powerful and Flexible Framework for Codec Execution VISA APIs Enable Encode, Decode, and Algorithm Control Eight interfaces based on four classes of multimedia algorithms (video, image, speech, audio) and functionality (encode decode) Create a DSP Executable with Configuration Guide Documentation and example build script Enables TI, customers, and 3rd parties to build custom combinations of algorithms No DSP coding required Builds libraries into a DSP executable with a makefile Parameters available to control memory placement Uses TI codec engine framework to route data to multimedia algorithms Creates a DSP AV executable VISA interface is exposed to the application layer Building a Custom DSP AV Executable Old Slide – not consistent with Feb 15th version of TRS for DVEV