Memory management method and device thereof

Abstract

The invention provides a memory management method and a device thereof. The memory management method includes the steps that the space of a rotation buffer is initialized; a data end pointer is set to point to the position where the tail address of the rotation buffer is added with one; the residual capacity of the residual space of the rotation buffer is acquired; whether the residual capacity is larger than or equal to the length of target data or not is judged, and if it is judged that the residual capacity is larger than or equal to the length of the target data, the target data are written in according to the head address of the residual space; if it is judged that the residual capacity is smaller than the length of the target data, the data end pointer is set to point to the head address of the residual space. The invention further provides the memory management device using the memory management method. CUP operation resources can be better saved by changing the pointing position of the data end pointer. Meanwhile, the length of the target data and the capacity of the residual space are judged, the problems happening when the data length is insufficient in the using process of the rotation buffer are solved, the memory occupied space can be better saved, and therefore the operating speed is optimized.

Description

technical field [0001] The invention relates to the field of memory quantity processing, in particular to a memory management method and device. Background technique [0002] Pulse Code Modulation (Pulse Code Modulation), referred to as PCM, is a digital signal generated by sampling, quantizing and encoding a continuously changing analog signal. The advantage of PCM is good sound quality, but the disadvantage is that it is bulky. PCM can provide users with digital data dedicated line services at a rate from 2M to 155M, and can also provide other services such as voice, image transmission, and distance learning. The general method of decoding compressed data into PCM data is to open up a space on the memory alone, decode a frame of PCM data through a decoder, and write the frame of data into the space, and decode once each time. For one frame of data, this separately opened space is copied to the circular buffer, which leads to an additional copy. The above-mentioned decodi...

AI Technical Summary

Problems solved by technology

The general method of decoding compressed data into PCM data is to open up a space on the memory alone, decode a frame of PCM data through a decoder, and write the frame of data into the space, and decode once each time. For one frame of data, copy this separately opened space to the circular buffer, which leads to an additional copy

The above-mentioned decoding process wastes the available memory resources and will greatly affect the running speed of the machine

Another method is to open up a space for each frame. When the size of a frame is uncertain, only the largest data space can be opened, which wastes data space. When the memory space is limited, it cannot meet the requirements.

Images