Make audio/video work on OS X

[dvor]

Platform dependent should be wrapped to

#if TARGET_OS_IPHONE
    // do iOS stuff
#else
    // do OS X stuff
#endif

However this should be avoid if possible. For example UIView can be replaced with OCTView, which would be typedef'd to UIView or NSView somewhere in the code.

[stal888]

Maybe OCTAudioEngine and OCTVideoEngine should be made user-serviceable (as in file conduits)?
We could provide separate iOS and OS X implementations without a lot of preprocessor stuff.

[dvor]

It depends on how much common code they both have. For example if you'll look at AudioEngine, all code it has is suitable for both iOS and OS X, differences are in

• creating image from pixels buffer here
• orientation change (which is only iOS specific) here.

So there would be just 2 macros for whole engine which is not that bad.

[dvor]

Done