comparison qm-dsp-decimate/decimate.cpp @ 17:f8efad075df0

Better output, to match resample

     }
 
     int sourceRate = sfinfo.samplerate;
     int targetRate = sourceRate / factor;
 
+    cerr << "Decimating by factor " << factor << ", from " << sourceRate
+         << " to " << targetRate << " Hz" << endl;
+
     if (sourceRate % factor != 0) {
         cerr << "WARNING: Decimation factor " << factor << " from source rate "
              << sourceRate << " gives non-integral target rate (not supported "
              << "by output file format), recording as " << targetRate << endl;
     }

             etv.tv_sec -= 1;
     }
     etv.tv_usec -= tv.tv_usec;
         
     double sec = double(etv.tv_sec) + (double(etv.tv_usec) / 1000000.0);
-    cerr << "elapsed time: " << sec << " sec, in frames/sec: " << sfinfo.frames/sec << ", out frames/sec: " << n/sec << endl;
+    cerr << sfinfo.frames << " frames in, " << n << " frames out"
+	 << ", nominal factor " << (1.0/factor)
+	 << ", actual " << double(n)/double(sfinfo.frames)
+	 << endl << "Elapsed time: " << sec << " sec, in frames/sec: "
+         << int(sfinfo.frames/sec) << ", out frames/sec: " << int(n/sec) << endl;
 
     return 0;
 }