Does anyone have any guides on using OpenMAX IL, specifically for audio usage? The best I can find is the OpenMAX specification (which is very intimidating to say the least) and the hello_audio sample program in the Raspberry Pi firmware. The sample program also makes use of some helper library (ilclient) which I can't find any info on, and would like to avoid so I don't throw any portability out the window.
Also. libilclient is included as a library on the library path, but no header files are included for it. The header for it only exists in the hello_pi samples directory. Is that intentional?