A real-time H.264 MP decoder based on a DM642 DSP

Author

Pescador, F. ; Garrido, M.J. ; Sanz, C. ; Juárez, E. ; Rodriguez, M.C. ; Samper, D.

Author_Institution

Univ. Polytech. de Madrid, Madrid

fYear

2007

fDate

11-14 Dec. 2007

Firstpage

1248

Lastpage

1251

Abstract

In this paper, the implementation of a Main Profile H.264 decoder based on a DM642 digital signal processor is described. An initial standard compliant raw-C decoder has been optimized in speed for the target processor. The parallelism between algorithm execution and data movement has been fully exploited using DMA. Also, critical parts of the algorithm have been encoded directly in assembly code to increase the number of instructions per cycle. The decoder has been tested in simulation with actual (transcoded) DVD and digital TV streams. According to these tests, standard definition (D1) real time decoding can be obtained with a DM642@720MHz.

Keywords

code standards; decoding; digital signal processing chips; digital television; digital versatile discs; file organisation; transcoding; video coding; video streaming; DM642 DSP; DM642 digital signal processor; DMA; DVD; H.264 MP decoder; algorithm execution; assembly code; data movement; digital TV streams; main profile H.264 decoder; raw-C decoder; real time decoding; standard definition; target processor; Buffer storage; Computer architecture; Costs; Decoding; Digital signal processing; Digital signal processors; MPEG 4 Standard; Signal processing algorithms; Testing; Video coding;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems, 2007. ICECS 2007. 14th IEEE International Conference on

Conference_Location

Marrakech

Print_ISBN

978-1-4244-1377-5

Electronic_ISBN

978-1-4244-1378-2

Type

conf

DOI

10.1109/ICECS.2007.4511223

Filename

4511223