the answer from our experts is:
Yes. IPP support both standard MPEG1 and MPEG2 and all layers from these standards. MPEG audio decoders from IPP also support so called MPEG2.5 standard
Please be noted that we provide two variants for MPEG audio codec, the first one is based on FP calculations and the second one is based on pure integer (fixed-point) calculations. The only differnece between them is that FP implementation also support multi-channel extension whereas fixed-point does not.