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/*
** Copyright (c) 2003-2016, Erik de Castro Lopo <erikd@mega-nerd.com>
** All rights reserved.
**
** This code is released under 2-clause BSD license. Please see the
** file at : https://github.com/libsndfile/libsamplerate/blob/master/COPYING
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <samplerate.h>
#include "util.h"
#define BUFFER_LEN 10000
static void float_to_short_test (void) ;
static void short_to_float_test (void) ;
static void float_to_int_test (void) ;
static void int_to_float_test (void) ;
int
main (void)
{
puts ("") ;
float_to_short_test () ;
short_to_float_test () ;
float_to_int_test () ;
int_to_float_test () ;
puts ("") ;
return 0 ;
} /* main */
/*=====================================================================================
*/
static void
float_to_short_test (void)
{
static float fpos [] =
{ 0.95f, 0.99f, 1.0f, 1.01f, 1.1f, 2.0f, 11.1f, 111.1f, 2222.2f, 33333.3f,
// Some "almost 1" as corner cases
(float) (32767.0 / 32768.0), (float) ((32767.0 + 0.4) / 32768.0), (float) ((32767. + 0.5) / 32768.0),
(float) ((32767.0 + 0.6) / 32768.0), (float) ((32767.0 + 0.9) / 32768.0),
} ;
static float fneg [] =
{ -0.95f, -0.99f, -1.0f, -1.01f, -1.1f, -2.0f, -11.1f, -111.1f, -2222.2f, -33333.3f,
// Some "almost 1" as corner cases
(float) (-32767.0 / 32768.0), (float) (-(32767.0 + 0.4) / 32768.0), (float) (-(32767.0 + 0.5) / 32768.0),
(float) (-(32767.0 + 0.6) / 32768.0), (float) (-(32767.0 + 0.9) / 32768.0),
} ;
static short out [MAX (ARRAY_LEN (fpos), ARRAY_LEN (fneg))] ;
int k ;
printf ("\tfloat_to_short_test ............................. ") ;
src_float_to_short_array (fpos, out, ARRAY_LEN (fpos)) ;
for (k = 0 ; k < ARRAY_LEN (fpos) ; k++)
if (out [k] < 30000)
{ printf ("\n\n\tLine %d : out [%d] == %d\n", __LINE__, k, out [k]) ;
exit (1) ;
} ;
src_float_to_short_array (fneg, out, ARRAY_LEN (fneg)) ;
for (k = 0 ; k < ARRAY_LEN (fneg) ; k++)
if (out [k] > -30000)
{ printf ("\n\n\tLine %d : out [%d] == %d\n", __LINE__, k, out [k]) ;
exit (1) ;
} ;
puts ("ok") ;
return ;
} /* float_to_short_test */
/*-------------------------------------------------------------------------------------
*/
static void
short_to_float_test (void)
{
static short input [BUFFER_LEN] ;
static short output [BUFFER_LEN] ;
static float temp [BUFFER_LEN] ;
int k ;
printf ("\tshort_to_float_test ............................. ") ;
for (k = 0 ; k < ARRAY_LEN (input) ; k++)
input [k] = (k * 0x8000) / ARRAY_LEN (input) ;
src_short_to_float_array (input, temp, ARRAY_LEN (temp)) ;
src_float_to_short_array (temp, output, ARRAY_LEN (output)) ;
for (k = 0 ; k < ARRAY_LEN (input) ; k++)
if (ABS (input [k] - output [k]) > 0)
{ printf ("\n\n\tLine %d : index %d %d -> %d\n", __LINE__, k, input [k], output [k]) ;
exit (1) ;
} ;
puts ("ok") ;
return ;
} /* short_to_float_test */
/*=====================================================================================
*/
static void
float_to_int_test (void)
{
static float fpos [] =
{ 0.95f, 0.99f, 1.0f, 1.01f, 1.1f, 2.0f, 11.1f, 111.1f, 2222.2f, 33333.3f
} ;
static float fneg [] =
{ -0.95f, -0.99f, -1.0f, -1.01f, -1.1f, -2.0f, -11.1f, -111.1f, -2222.2f, -33333.3f
} ;
static int out [MAX (ARRAY_LEN (fpos), ARRAY_LEN (fneg))] ;
int k ;
printf ("\tfloat_to_int_test ............................... ") ;
src_float_to_int_array (fpos, out, ARRAY_LEN (fpos)) ;
for (k = 0 ; k < ARRAY_LEN (fpos) ; k++)
if (out [k] < 30000 * 0x10000)
{ printf ("\n\n\tLine %d : out [%d] == %d\n", __LINE__, k, out [k]) ;
exit (1) ;
} ;
src_float_to_int_array (fneg, out, ARRAY_LEN (fneg)) ;
for (k = 0 ; k < ARRAY_LEN (fneg) ; k++)
if (out [k] > -30000 * 0x1000)
{ printf ("\n\n\tLine %d : out [%d] == %d\n", __LINE__, k, out [k]) ;
exit (1) ;
} ;
puts ("ok") ;
return ;
} /* float_to_int_test */
/*-------------------------------------------------------------------------------------
*/
static void
int_to_float_test (void)
{
static int input [BUFFER_LEN] ;
static int output [BUFFER_LEN] ;
static float temp [BUFFER_LEN] ;
int k ;
printf ("\tint_to_float_test ............................... ") ;
for (k = 0 ; k < ARRAY_LEN (input) ; k++)
input [k] = (k * 0x80000000) / ARRAY_LEN (input) ;
src_int_to_float_array (input, temp, ARRAY_LEN (temp)) ;
src_float_to_int_array (temp, output, ARRAY_LEN (output)) ;
for (k = 0 ; k < ARRAY_LEN (input) ; k++)
if (ABS (input [k] - output [k]) > 0)
{ printf ("\n\n\tLine %d : index %d %d -> %d\n", __LINE__, k, input [k], output [k]) ;
exit (1) ;
} ;
puts ("ok") ;
return ;
} /* int_to_float_test */
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