Ultra-high-definition video layered decoding method based on processor heterogeneous parallel computing

Abstract

The application discloses a kind of based on processor heterogeneous parallel computing's ultra-high definition video layered decoding method, belong to video decoding field, including steps: S1, concurrent scheduling lets CPU decode basic layer and GPU decode enhancement layer simultaneously, and the same frame is obtained synchronously Enhancement layer and basic layer decoding data;S2, basic layer video data is uplink to GPU;S3, the LL of the obtained GPU basic layer data and GPU enhancement layer data is operated using GPU to obtain the enhancement decoding picture of basic layer, and it is recorded as LL;S4, the obtained LL, LH, HL, HH, using GPU is carried out once H1V1 inverse wavelet transform and obtains decoding picture;S5, according to the different processing mode selected by input decoding output parameter.This application can not only be compatible with the production system used by TV station at present, but also can realize the pressure of effective reduction of storage bandwidth when multi-resolution layered decoding, reduce bandwidth pressure, realize higher resolution multi-layer real-time editing.

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