在iOS访问JPEG COM段?
it1352
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问题说明
JPEG有许多标记段级别，我想读写注释标记段级别-COM(读/写).它需要底层编程.如何在iOS中访问它?
JPEG has many Marker Segment Levels, I want to read and write Comment marker segment level - COM (read/write). It needs low level programming. How can i access it in iOS ?
参考-
- http://help.accusoft.com /ImageGear/v18.1/Mac/IGDLL-10-05.html
- https://www.npmjs.com/package/jpeg-com-segment
- http://www.sno.phy.queensu.ca/~ phil/exiftool/
- http://help.accusoft.com/ImageGear/v18.1/Mac/IGDLL-10-05.html
- https://www.npmjs.com/package/jpeg-com-segment
- http://www.sno.phy.queensu.ca/~phil/exiftool/
正确答案
#1
IOS允许您打开文件.读取JPEG文件.在流中搜索COM标记.阅读长度.读取数据.这是基本的[目标] C编程.
IOS allows you to open files. Read the JPEG file. Search the stream for the COM marker. Read the length. Read the data. It's basic [objective] C programming.
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