在Objective-C Mac App中使用TagLib（C ++库）

Question

I'm looking to use TagLib , a C++ library for getting tagging information from a variety of audio files, in a new Objective-C project.

1. Does anyone have experience using a C++ library such as this in an Objective-C project?
2. What kind of roadblocks should I expect?
3. Can anyone point me a good tutorials or guides for this subject?

Also... is TagLib even a good choice? I need to support MP3, WMA, FLAC, MP4, M4A, AAC, and OGG files. I don't believe there is a native Mac framework that will support all of these.

Thank you!

Answer 1

It is very easy to mix Objective-C and C++; there is practically no problem. Read this documentation at Apple. As described there, there is something called Objective-C++, which allows you to mix C++ and Objective-C++ in the same file. In XCode, just use a file extension .mm to use Objective-C++.

It does not attempt to unify at all the Objective-C objects and C++ objects; you can just use them simultaneously, independently. So the Objective-C objects are managed by retain / release , and C++ objects are managed by new / delete . There are a few tricky things like putting a non-pointer C++ object as an ivar inside an Objective-C class, but if you always use C++ pointers (instead of non-pointer objects) you won't face any major problem.