APPARATUS AND METHOD FOR DECODING USING COEFFICIENT COMPRESSION

摘要

Methods and apparatus for utilizing coefficient compression in graphics decoding are provided. In one example, a computer processing unit (CPU) is interfaced with a graphic processing unit (GPU) where the CPU extracts coefficients and passes compressed coefficient data, preferably in uniformly sized data packets, to the GPU for decoding and coefficient processing. Preferably the extracted coefficients are inverse transform (iT) coefficients and CPU includes an encoder control component configured to adaptively select a coefficient encoding process for performing the iT coefficient data compression based on the data content of the iT coefficients such that data packets are generated that include data that indentifies the selected coefficient encoding process used for encoding the compressed iT coefficient data contained in the data packet. In such case, the GPU is configured to receive such data packets and decode the iT coefficient data within each packet using a coefficient decoding method complementary to the selected coefficient encoding process identified within the packet. The GPU preferably uses massively parallel coefficient decoding of such data packets.