Audio/video data access method and device based on raw device
A data access, audio and video technology, applied in data recording, electrical digital data processing, special data processing applications, etc., can solve the problems of packet and packet loss, easy damage of allocation table, different sizes of new and old files, etc., to achieve good results Space reclamation strategy and segmentation strategy, ensuring data security, and extending the service life
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[0038] As shown in Figure 1, a device for accessing audio and video data based on bare equipment includes:
[0039] Audio and video data operation interface 110, for providing the interface of audio and video data reading and writing operation to embedded digital audio and video system;
[0040] An index generator 120, configured to generate index information according to data attributes;
[0041] Audio-video data converter 160, is used for carrying out format conversion to audio-video data, and adds identification mark and time stamp to every packet of data;
[0042] The block operation manager 130 is used to allocate, divide and reclaim the disk space of the physical disk 150, calculate the conversion between the block position and the disk position, and maintain the block buffer;
[0043] The disk manager 140 is used to perform unbuffered direct read and write operations on the physical disk 150 at a specified location;
[0044] The allocation manager 170 is used to provi...
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