creating au plugin for LogicPro???? Some small help needed.

[sbrawer]

I have created a complex and sophisticated synthesizer with objective C, Cocoa and AudioQueue. (For just one simple example, frequencies, amplitudes and timbres can fluctuate on sub-millisecond up to seconds time scales. There is no start/end latency.) The synth receives MIDI signals from a LogicPro external MIDI track and outputs to standard out (which is piped back to a Logic audio track via an audio interface). Objective C classes organize the modules of the project, while time-critical variables and calculations use C. There is no C++ (which I know). It runs in X-code.

I would like to make this synth an au plugin app for LogicPro, and am looking for MINIMAL help or examples to guide me. I think I need only a few things. POINT ME TO THE APPROPRIATE FUNCTIONS (see below) and I will figure out the rest. I'm just asking for a few words. I will use audio graphs if necessary.

1. What is the C/Obj C function (or functions) needed to capture signals from the Logic software tracks into which the plugin is inserted? (These would replace/expand MIDI signals with Logic signals.)

2. What is the C/Obj C function (or functions) to send the output directly to the instrument track?

3. What is the C/Obj C function (or functions) required for automation?

4. How do I create the app bundle and where do I put it?

5. What else should I ask?

Currently, the synth is for my own personal use for composing opera and songs using custom instrumental sounds. I am not fooling around. See soundcloud.com/steven-brawer for a sci-fi opera composed entirely with Logic 9.

I use XCode 5.1.1, Logic Pro 10.0.7, OSX 10.8.5. I plan to upgrade to Yosemite, Logic 10.1 and the most recent XCode when I see from the forums that things have settled down sufficiently.

Thank you in advance.[/size]

[FLWrd]

Work your way through the code examples. They are included in XCode (look Audio Unit Examples). Compile and install them, then replace the sound generating code with your own.