Method and circuit for processing written address and width unaligned image

Abstract

The invention provides a method, which comprises the following steps of: 10, configuring image information through a central processing unit (CPU); 20, judging the width and the row start address of a processed image in the configured information, and outputting a judgment result; 30, generating a write command according to the result, piecing the data output by an image processing unit into datastream matched with the write command, and sending the write command and the data stream to a memory; 40, performing continuous transmission till the transmission of the row is finished; and 50, starting a new row till the transmission of the whole image is finished. In a circuit structure, the cpu is connected with a configuration unit; the configuration unit is connected with an image width alignment judgment unit and an image row start address alignment judgment unit respectively; the image width alignment judgment unit and the image row start address alignment judgment unit are connected with a write command generating unit and a date recombination unit respectively and connected with the memory; and the date recombination unit is connected with the image processing unit. The invention can support image write back of random starting point and random width in a high bit width system.

Description

【Technical field】 [0001] The invention relates to a method for correctly writing processed image data to a target address area with any start address and width in a high bit width system. 【Background technique】 [0002] Broadband applications have become the application trend of handheld devices in the past two years. Broadband applications based on virtual display and real-time 3D technology have gradually entered the home. Online music listening, video chatting, online film and television, etc. have become the new favorites of many modern people's online entertainment. , network multimedia applications are getting more and more attention from network users. At the same time, more and more applications place extremely high requirements on the computing power of the processor and the capacity of the memory. In this case, the previous 32-bit computing platform has been unable to handle such complex applications, and many users have begun to complain about the sluggishness of...

AI Technical Summary

Problems solved by technology

The existing image write-back filling method will impose restrictions on the application. The write-back address of the image needs to be 64-bit aligned and the width of the write-back image also needs to be 64-bit aligned, otherwise the correctness of the write operation cannot be guaranteed; this limitation The existence of any starting point and any width of the image cannot be written back, which greatly limits the flexibility of image processing applications

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