libsamplerate/tests/downsample_test.c

   1 /*
   2 ** Copyright (c) 2008-2016, Erik de Castro Lopo <erikd@mega-nerd.com>
   3 ** All rights reserved.
   4 **
   5 ** This code is released under 2-clause BSD license. Please see the
   6 ** file at : https://github.com/erikd/libsamplerate/blob/master/COPYING
   7 */
   8
   9 #include <stdio.h>
  10 #include <stdlib.h>
  11 #include <samplerate.h>
  12
  13 #include "util.h"
  14
  15 static void
  16 downsample_test (int converter)
  17 {       static float in [1000], out [10] ;
  18         SRC_DATA data ;
  19
  20     printf ("        downsample_test     (%-28s) ....... ", src_get_name (converter)) ;
  21         fflush (stdout) ;
  22
  23         data.src_ratio = 1.0 / 255.0 ;
  24         data.input_frames = ARRAY_LEN (in) ;
  25         data.output_frames = ARRAY_LEN (out) ;
  26         data.data_in = in ;
  27         data.data_out = out ;
  28
  29         if (src_simple (&data, converter, 1))
  30         {       puts ("src_simple failed.") ;
  31                 exit (1) ;
  32                 } ;
  33
  34         puts ("ok") ;
  35 } /* downsample_test */
  36
  37 int
  38 main (void)
  39 {
  40         puts ("") ;
  41
  42         downsample_test (SRC_ZERO_ORDER_HOLD) ;
  43         downsample_test (SRC_LINEAR) ;
  44         downsample_test (SRC_SINC_FASTEST) ;
  45         downsample_test (SRC_SINC_MEDIUM_QUALITY) ;
  46         downsample_test (SRC_SINC_BEST_QUALITY) ;
  47
  48         puts ("") ;
  49
  50         return 0 ;
  51 } /* main */