Method and system for acquiring memory resource of audio and video hard decoding chip

Abstract

The invention discloses a method and a system for acquiring a memory resource of an audio and video hard decoding chip. The method comprises the following steps that: a main control central processing unit (CPU) calculates a forecast memory resource required value of the audio and video hard decoding chip; the audio and video hard decoding chip calculates a required memory resource required value; the main control CPU compares the two values to acquire a maximum memory resource required value of the two values, and compares the maximum memory resource required value with an assignable maximumvalue of a system memory; if the maximum memory resource required value is smaller than the assignable maximum value of the system memory, the main control CPU transmits the maximum memory resource required value to the audio and video hard decoding chip; and the audio and video hard decoding chip transmits a memory resource acquiring requirement to an operating system. By the method and the system, the problems of decoding error or abnormity caused by wrong calculation of the memory resource requirement of the audio and video hard decoding chip can be avoided, and the playback quality of audio and video files is enhanced.

Description

technical field [0001] The invention belongs to the field of multimedia technologies, and in particular relates to a method and a system for acquiring memory resources of an audio and video hard decoding chip. Background technique [0002] With the continuous development of multimedia playback technology, users have higher and higher requirements for audio and video playback quality. [0003] When playing audio and video files, the audio and video hard decoding chip plays a very important role. The audio and video hard decoding chip is independent of the main control CPU, and the audio and video decoding work is completed independently through a special IC chip, such as VCD / DVD audio and video The decompression of audio and video and the compression of audio and video basically adopt independent audio and video hard decoding chips. [0004] Since the control program of the main control CPU and the decoding function of the hard decoding IC work independently, the main contro...

AI Technical Summary

Problems solved by technology

[0005] However, once the audio and video hard decoding chip is finalized, the codec formats it supports and the computing unit modules for hardware system resource allocation cannot be adjusted, especially the computing unit modules for hardware system resource allocation. Once the computing unit Errors in the calculation of system resources acquired by the module will directly lead to decoding errors or abnormal phenomena; system resource allocation mainly involves the allocation of memory resources, so if the calculation of a certain encoding format by the calculation unit module due to hardware system resource allocation occurs problem, it will lead to the decoding error of the video file in the encoding format, and then the video black screen, blurred screen, audio noise and other situations will occur, which seriously reduces the quality of multimedia playback and has a great impact on the user's viewing

[0006] How to avoid the problem of decoding errors or abnormalities due to the incorrect calculation of the memory resource requirements of the audio and video hard decoding chip is one of the research directions in the field of multimedia playback technology

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