Research And Implenment Of AVS Video Decoder Based On AMD64 Technology

AVS standard is a new generation video coding one, which employsChinese own fruits of codec in addition tomainstream international technology.As the first Chinese intellectual property video standard, AVS has brightprospects. AMD64 technology is developed dramatically after 2000 year andplays an very important role during the cpu's transition from 32 to 64. The 64-bitsoftware based on AMD64 technology has been developing gradually.In order to popularize AVS standard and keep up with the development ofterminal technology and because there is no AVS video decoder based on 64-bittechnology hitherto, the thesis preliminary studies the AVS video decoder basedon 64-bit technology by combining x64 technology and AVS standard. The maincontents are summarized as below:(1) The development of video codec standards at home and abroad isstudied. The dilemma of international standards and the opportunity of AVSstandard are analyzed, and the video codec algorithm and its process arefocused on.(2) The development and transplantation of 64-bit application softwarebased on x64 architecture are studied, and then the AVS decoder is transplanted to 64-bit platform. Data structure and decoding process of reference decoder aremodified on 64-bit platform, finally the image interpolation module isoptimized.(3) Multimedia instructions programming technology is studied, and thenthe 64-bit decoder including integer inverse transform module and imagereconstruction module is optimized using multimedia instructions. In compilerlayer, the thesis uses 64-bit compiler tool for the decoder in code-leveloptimization. Finally, the experiment shows that the decoder has a good speed.The research results of this thesis have extensive practical value inmultimedia application systems such as digital TV, streammedia, and so on.