util.h

   1 /*
   2 ** Copyright (c) 2002-2016, 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 #define ABS(a)                  (((a) < 0) ? - (a) : (a))
  10 #define MIN(a,b)                (((a) < (b)) ? (a) : (b))
  11 #define MAX(a,b)                (((a) >= (b)) ? (a) : (b))
  12
  13 #define ARRAY_LEN(x)    ((int) (sizeof (x) / sizeof ((x) [0])))
  14
  15 void gen_windowed_sines (int freq_count, const double *freqs, double max, float *output, int output_len) ;
  16
  17 void save_oct_float (char *filename, float *input, int in_len, float *output, int out_len) ;
  18 void save_oct_double (char *filename, double *input, int in_len, double *output, int out_len) ;
  19
  20 void interleave_data (const float *in, float *out, int frames, int channels) ;
  21
  22 void deinterleave_data (const float *in, float *out, int frames, int channels) ;
  23
  24 void reverse_data (float *data, int datalen) ;
  25
  26 double calculate_snr (float *data, int len, int expected_peaks) ;
  27
  28 const char * get_cpu_name (void) ;
  29
  30 #if OS_IS_WIN32
  31 /*
  32 **      Extra Win32 hacks.
  33 **
  34 **      Despite Microsoft claim of windows being POSIX compatibile it has '_sleep'
  35 **      instead of 'sleep'.
  36 */
  37
  38 #define sleep _sleep
  39 #endif
  40