Code to convert .mp3 or .wav audio file to iPhone .caf format

iPhone likes to work with audio files compressed with ima4 and wrapped in the .caf format. On OS X the afconvert command will do this, but I needed something for linux. So I wrote some C code to do the conversion I needed: wav2caf.c

wav2caf takes a wav file as input, and outputs an ima4-compressed .caf file suitable for playing on the iphone. For source code, build, and install instructions, download here.

Caveats: This source code expect the wav file to be 22050 Hz and single channel. SOX will convert just about any audio file (e.g. mp3, m4a) to this format with a command such as "sox -r 22050 -c 1 output.wav"

There's not much to the source file. wav2caf.c looks a bit like aifc2wav, because that's what I started with, then reversed it, sort of. Good luck. If you make improvements let me know.