4K real-time HEVC decoder on an FPGA
Abstract
With the popularization of a quad high-definition/4K video being dependent on the availability of real-time High Efficiency Video Coding (HEVC) decoders, hardware implementations have become more appealing due to their superior performance and low power consumption. In this paper, a field-programmable gate array (FPGA)-based hardware implementation of a 4K 30 frames/s real-time HEVC decoder is presented. An elastically pipelined decoder architecture is used to absorb variations in processing time and each pipeline stage is optimized to use available FPGA primitives. FPGA-specific challenges in managing critical path delays to achieve a target operating frequency of 150 MHz required many architectural novelties, such as exploitation of the sparsity of transformed coefficient matrix, single-cycle reference pixel processing in intra prediction, and flexible block ordering in deblocking filter/sample …