Abstract:

As a new coding standard, H264 achieves good performance, but that makes it more complicated. Storm is one of the highperformance stream processors aiming at media application and signal processing, and it has a good prospect in media processing. In order to match the requirements of the computing performance of H.264, this paper presents a stream implementation of transform encoding in H.264 (1080P) on the StormSP16 G160 stream processor. Combining different features of dataflow with a specific process of streaming, the stream technologies are explicated in detail, such as choosing the parallel particles, organization of data flow, and standardization. Experimental results show that stream implementation achieves high performance, and it satisfies  the requirements of realtime encoding by accelerating the whole program according to this encoding efficiency. This implementation not only provides a reference for streaming other applications, but also presents a new way to accelerate programs.

Key words: stream processor;H.264 video coding;transform encoding;stream architecture