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Mac Forum / Programming / Mac Programming / October 2005Carbon in Cocoa
Hi, I've been messing around with Cocoa trying to convert an old project from Carbon to Cocoa and needed to record audio. I managed to put an ObjC wrapper around my old Carbon code and it works fine in Cocoa - just not sure if this a good idea. It runs OK as a universal binary which is the reason I wanted to go with Cocoa - too much deprecated stuff in Carbon. The idea is to change the recording code to Cocoa when I work out how to do it but that may take years for me. Really just wondering if I should deploy my app with this mixture. Any help appreciated, thanks. Paul > Hi, > [quoted text clipped - 10 lines] > Really just wondering if I should deploy my app with this mixture. Any help > appreciated, thanks. Carbon and Cocoa are just libraries, and you can generally mix them with impunity. Indeed, Carbon and Cocoa both use pieces of the other, so you are forced to at least have them mixed behind the scenes, no matter what you do. There are gotchas, and they generally come in when you're not only using them in the same program, but when you're using things from both whose capabilities overlap. For example, previous to 10.2, it wasn't possible to have automatic dispatching of both Cocoa and Carbon events in the same app, so you couldn't install a Carbon event handler in a Cocoa app without a lot of pain. Things have gotten a lot better since then. As of 10.3/10.4, what won't work is mostly limited to mixing view hierarchies (trying to put Carbon views in Cocoa windows or vice versa), and some weirdo stuff like attempting to use both the Carbon and Cocoa color pickers. For sound recording code, you should be just fine.  SignatureMichael Ash Rogue Amoeba Software > I've been messing around with Cocoa trying to convert an old project from > Carbon to Cocoa and needed to record audio. I managed to put an ObjC wrapper [quoted text clipped - 5 lines] > recording code to Cocoa when I work out how to do it but that may take years > for me. Why not just switch to the non-deprecated bits of Carbon? That'll be easier and it'll work fine. As for audio recording, switch to Core Audio. It works a lot better than the Carbon Sound Manager. -Eric SignatureEric Albert ejalbert@cs.stanford.edu http://outofcheese.org/ Hi, The problem with CoreAudio is that I don't know where to start. All the Apple sample code examples build some complicated esoteric sh.t - all I want is simple record to a buffer and play the buffer. Regards, paul >> I've been messing around with Cocoa trying to convert an old project from >> Carbon to Cocoa and needed to record audio. I managed to put an ObjC [quoted text clipped - 16 lines] > > -Eric > The problem with CoreAudio is that I don't know where to start. All the > Apple sample code examples build some complicated esoteric sh.t - all I want > is simple record to a buffer and play the buffer. That sounds like a good question for Apple's coreaudio-api mailing list. -Eric SignatureEric Albert ejalbert@cs.stanford.edu http://outofcheese.org/ |
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