Method and system for error robust audio playback time stamp reporting

摘要

A method and system for resynchronizing an embedded multimedia system using bytes consumed in an audio decoder. The bytes consumed provides a mechanism to compensate for bit error handling and correction in a system that does not require re-transmission. The audio decoder keeps track of the bytes consumed and periodically reports the bytes consumed. A host microprocessor indexes the actual bytes consumed since bit errors may have been handled or corrected to a predetermined byte count to determine whether resynchronization is necessary.

主权项

1. A multimedia system having multiple processors comprising:
an audio decoder operable to
decode an audio bitstream of a program,count bytes consumed by the audio decoder, andreport the count of the bytes consumed; and a host microprocessor operable to
send the audio bitstream to the audio decoder,receive the count of the bytes consumed,select a predetermined byte count stored in a look-up table (LUT) based on the count of bytes consumed,retrieve from the LUT a predetermined playback time associated with the predetermined byte count, andresynchronize the system based on the predetermined playback time, wherein the host microprocessor comprises:
the LUT storing the predetermined byte count and the predetermined playback time associated with the predetermined byte count;an error-robust playback time stamp report cross referencing module which cross references the count of the bytes consumed and the predetermined byte count indexed in the LUT; anda LUT constructing module for constructing the LUT for the program.