GETPRINFO
INTARG = GETPRINFO(&tmpinfo, sample_rate);
INTARG = GETPRINFO(&tmpinfo, channels) - 1;
INTARG = GETPRINFO(&tmpinfo, channels);
idat = GETPRINFO(&tmpinfo, sample_rate);
idat = GETPRINFO(&tmpinfo, channels) - 1;
encoding = GETPRINFO(&tmpinfo, encoding);
precision = GETPRINFO(&tmpinfo, precision);
idat = GETPRINFO(&tmpinfo, channels);