FPGA Design Methodology for a Wavelet-Based Scalable Video Decoder

摘要

Client-side diversification led the video-coding community to develop scalable video-codecs supporting efficient decoding at varying quality levels. This scalability has a lot of advantages but the corresponding decoding algorithm is complex and really stresses the system bandwidth as it replaces the block-based DCT-approach with frame-based wavelets. This has a tremendous impact on the hardware architecture. We present the implementation of the RESUME decoder using reconfigurable hardware designed through the use of state-of-the-art HW/SW-codesign techniques. These techniques were augmented with automatic loop transformations and regression testing. Our efforts resulted in a design capable of decoding more than 25 frames per second at lossless CIF resolution.