问题
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 ?
References -
- 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/
回答1:
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.
来源:https://stackoverflow.com/questions/43535316/how-can-i-access-jpeg-com-segment-in-ios