Function b2CreateRecording 

pub unsafe extern "C" fn b2CreateRecording(
    byteCapacity: c_int,
) -> *mut b2Recording

Create a bounded recording buffer. @p byteCapacity is the hard total byte limit; memory is allocated incrementally as the recording grows. Pass 0 for the library maximum. @return A recording handle, freed with b2DestroyRecording, or NULL for an invalid limit