audio - MIDI player/synthesizer library for the iPhone

Question

Does anyone know if there is a free/cheap MIDI player/synthesizer library that I can incorporate into my iPhone application?

As I understand it the iPhone doesn't have native support for MIDI playback.

To work around this limitation I've created a bank of .caf sound samples that I playback myself but I'd really like to improve the implementation and use MIDI if possible.

Any advice would be greatly appreciated.

Answer 1

Since 10 october of 2011, that is since iOS5, Apple has started delivering basic API for midi files playback. The API is called MusicPlayer along with MusicSequence Check this out :

https://developer.apple.com/library/ios/#documentation/AudioToolbox/Reference/MusicPlayerServices_Reference/Reference/reference.html#//apple_ref/doc/uid/TP40009301-CH1-SW1

By setting up an appropriate Audio Unit Processing Graph you can output the sound you like.