int
main (void)
{ static double src_ratios [] =
{ 1.0, 0.099, 0.1, 0.33333333, 0.789, 1.0001, 1.9, 3.1, 9.9
} ;
int k ;
/* Force output of the Electric Fence banner message. */
force_efence_banner () ;
puts ("") ;
puts (" Zero Order Hold interpolator :") ;
for (k = 0 ; k < ARRAY_LEN (src_ratios) ; k++)
callback_test (SRC_ZERO_ORDER_HOLD, src_ratios [k]) ;
puts (" Linear interpolator :") ;
for (k = 0 ; k < ARRAY_LEN (src_ratios) ; k++)
callback_test (SRC_LINEAR, src_ratios [k]) ;
puts (" Sinc interpolator :") ;
for (k = 0 ; k < ARRAY_LEN (src_ratios) ; k++)
callback_test (SRC_SINC_FASTEST, src_ratios [k]) ;
puts ("") ;
return 0 ;
} /* main */
int
main (void)
{
/* Force output of the Electric Fence banner message. */
force_efence_banner () ;
puts ("") ;
printf (" version : %s\n\n", src_get_version ()) ;
/* Current max converter is SRC_LINEAR. */
name_test (SRC_LINEAR) ;
error_test () ;
src_ratio_test () ;
return 0 ;
} /* main */
int
main (int argc, char *argv [])
{ CONVERTER_TEST snr_test_data [] =
{
{ SRC_ZERO_ORDER_HOLD,
7,
BOOLEAN_FALSE,
{ { 1, { 0.01111111111 }, 3.0, 1, 36.0, 1.0 },
{ 1, { 0.01111111111 }, 0.6, 1, 37.0, 1.0 },
{ 1, { 0.01111111111 }, 0.3, 1, 37.0, 1.0 },
{ 1, { 0.01111111111 }, 1.001, 1, 38.0, 1.0 },
{ 2, { 0.011111, 0.324 }, 1.9999, 2, 14.0, 1.0 },
{ 2, { 0.012345, 0.457 }, 0.456789, 1, 32.0, 1.0 },
{ 1, { 0.3511111111 }, 1.33, 1, 10.0, 1.0 }
}
},
{ SRC_LINEAR,
7,
BOOLEAN_FALSE,
{ { 1, { 0.01111111111 }, 3.0, 1, 73.0, 1.0 },
{ 1, { 0.01111111111 }, 0.6, 1, 74.0, 1.0 },
{ 1, { 0.01111111111 }, 0.3, 1, 74.0, 1.0 },
{ 1, { 0.01111111111 }, 1.001, 1, 77.0, 1.0 },
{ 2, { 0.011111, 0.324 }, 1.9999, 2, 97.0, 0.94 },
{ 2, { 0.012345, 0.457 }, 0.456789, 1, 60.0, 0.95 },
{ 1, { 0.3511111111 }, 1.33, 1, 22.0, 0.99 }
}
},
{ SRC_SINC_FASTEST,
8,
BOOLEAN_TRUE,
{ { 1, { 0.01111111111 }, 3.0, 1, 100.0, 1.0 },
{ 1, { 0.01111111111 }, 0.6, 1, 100.0, 1.0 },
{ 1, { 0.01111111111 }, 0.3, 1, 100.0, 1.0 },
{ 1, { 0.01111111111 }, 1.001, 1, 100.0, 1.0 },
{ 2, { 0.011111, 0.324 }, 1.9999, 2, 97.0, 1.0 },
{ 2, { 0.012345, 0.457 }, 0.456789, 1, 100.0, 0.5 },
{ 2, { 0.011111, 0.45 }, 0.6, 1, 97.0, 0.5 },
{ 1, { 0.3511111111 }, 1.33, 1, 97.0, 1.0 }
}
},
{ SRC_SINC_MEDIUM_QUALITY,
8,
BOOLEAN_TRUE,
{ { 1, { 0.01111111111 }, 3.0, 1, 100.0, 1.0 },
{ 1, { 0.01111111111 }, 0.6, 1, 100.0, 1.0 },
{ 1, { 0.01111111111 }, 0.3, 1, 100.0, 1.0 },
{ 1, { 0.01111111111 }, 1.001, 1, 100.0, 1.0 },
{ 2, { 0.011111, 0.324 }, 1.9999, 2, 97.0, 1.0 },
{ 2, { 0.012345, 0.457 }, 0.456789, 1, 100.0, 0.5 },
{ 2, { 0.011111, 0.45 }, 0.6, 1, 97.0, 0.5 },
{ 1, { 0.43111111111 }, 1.33, 1, 97.0, 1.0 }
}
},
{ SRC_SINC_BEST_QUALITY,
8,
BOOLEAN_TRUE,
{ { 1, { 0.01111111111 }, 3.0, 1, 100.0, 1.0 },
{ 1, { 0.01111111111 }, 0.6, 1, 100.0, 1.0 },
{ 1, { 0.01111111111 }, 0.3, 1, 100.0, 1.0 },
{ 1, { 0.01111111111 }, 1.001, 1, 100.0, 1.0 },
{ 2, { 0.011111, 0.324 }, 1.9999, 2, 97.0, 1.0 },
{ 2, { 0.012345, 0.457 }, 0.456789, 1, 100.0, 0.5 },
{ 2, { 0.011111, 0.45 }, 0.6, 1, 97.0, 0.5 },
{ 1, { 0.47111111111 }, 1.33, 1, 97.0, 1.0 }
},
},
} ; /* snr_test_data */
double best_snr, snr, freq3dB, conversion_rate, worst_conv_rate ;
int j, k, converter, verbose = 0 ;
/* Force output of the Electric Fence banner message. */
force_efence_banner () ;
if (argc == 2 && strcmp (argv [1], "--verbose") == 0)
verbose = 1 ;
puts ("") ;
for (j = 0 ; j < ARRAY_LEN (snr_test_data) ; j++)
{ best_snr = 5000.0 ;
worst_conv_rate = 1e200 ;
converter = snr_test_data [j].converter ;
printf (" Converter %d : %s\n", converter, src_get_name (converter)) ;
printf (" %s\n", src_get_description (converter)) ;
for (k = 0 ; k < snr_test_data [j].tests ; k++)
{ snr = snr_test (&(snr_test_data [j].test_data [k]), k, converter, verbose, &conversion_rate) ;
if (best_snr > snr)
best_snr = snr ;
if (worst_conv_rate > conversion_rate)
worst_conv_rate = conversion_rate ;
} ;
printf (" Worst case Signal-to-Noise Ratio : %.2f dB.\n", best_snr) ;
printf (" Worst case conversion rate : %.0f samples/sec.\n", worst_conv_rate) ;
if (snr_test_data [j].do_bandwidth_test == BOOLEAN_FALSE)
{ puts (" Bandwith test not performed on this converter.\n") ;
continue ;
}
freq3dB = bandwidth_test (converter, verbose) ;
printf (" Measured -3dB rolloff point : %5.2f %%.\n\n", freq3dB) ;
} ;
return 0 ;
} /* main */
