1. What's the difference between multirate FIR filter and multirate Stream FIR filter?
2. I need a multirate filter that will process an input of any length at a time, and be able to pick up where it left off when called again. For a decimating filter, that means it must maintain the decimation phase between calls. It also means the number of samples produced in each call is not fixed. (It's only fixed if the length of the input is divisible by the decimation ratio)
Does IPP have anything I can use?