TMS320DM642 DSP 是TI 公司新近推出的一款高性能數(shù)字多媒體處理器，它的兩級高速緩存（Cache）結(jié)構(gòu)為高復(fù)雜度視頻編碼算法的高效率實現(xiàn)提供了有力的保證。綜合考慮視頻編碼算法特點和Cache 結(jié)構(gòu)特征實現(xiàn)的算法，能夠滿足系統(tǒng)整體需求和指標要求。本文首先簡要介紹DM642 的Cache 結(jié)構(gòu)特點，然后針對視頻編碼算法的高復(fù)雜度，提出一種Cache 優(yōu)化策略，能夠很好的解決應(yīng)用系統(tǒng)中的實時實現(xiàn)問題。
關(guān)鍵詞: DM642 Cache 視頻編碼優(yōu)化策略
Abstract: TMS320DM642 is one high performance digital media processor recommended by TI Corp. Its two level cache structure could help to realize the high-complexity video coding algorithm efficiently. The algorithm, which takes the feather of the video coding and the two-level cache structure into account, would meet the requirement of the real-time application. In this paper, the DM642 cache structure is introduced first, and then according to the high complexity of video coding algorithm, a cache optimization strategy is proposed to realize the real-time video application system.
Key words: DM642; Cache; Video coding; Optimization strategy