Multipath audio and video concurrent decoding acceleration card and decoding acceleration method for same

• Main Authors: ZHANG DONGMING, JIN GUOQING, CUI HONGLIANG, ZHANG YONGDONG, BAO XIUGUO, YUAN QINGSHENG, MA YIKE, KONG XIANGBING, DOU JINJIN
• Format: Patent
• Language: English
• Published: 03.06.2015
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION

The invention provides a multipath audio and video concurrent decoding acceleration card, which comprises a decoding processor and a memory, wherein the decoding processor comprises a universal processor, a system agent module, a last-level high-speed cache module and various hardware decoding acceleration modules; the last-level high-speed cache module is shared by the universal processor and the hardware decoding acceleration modules, and is connected with the memory through the system agent module; hardware and software to-be-decoded data buffer areas are set in the memory; the universal processor is used for transmitting frame data to be decoded into the hardware or software to-be-decoded data buffer area according to whether hardware accelerated decoding is allowed or not; software and hardware decoding threads of the universal processor are used for extracting data in the corresponding buffer areas for decoding respectively. The invention further provides a corresponding decoding acceleration method. According to the multipath audio and video concurrent decoding acceleration card and the decoding acceleration method, high audio and video decoding acceleration capability is provided, high speed of switching under various formats and various decoders is achieved, and thousands of paths of concurrent decoding requests can be processed.