diff src/libsamplerate-0.1.9/tests/float_short_test.c @ 41:481f5f8c5634

Current libsamplerate source

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/libsamplerate-0.1.9/tests/float_short_test.c	Tue Oct 18 13:24:45 2016 +0100
@@ -0,0 +1,182 @@
+/*
+** Copyright (c) 2003-2016, Erik de Castro Lopo <[e-mail]>
+** All rights reserved.
+**
+** This code is released under 2-clause BSD license. Please see the
+** file at : https://github.com/erikd/libsamplerate/blob/master/COPYING
+*/
+
+#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 [] =
+	{	0.95, 0.99, 1.0, 1.01, 1.1, 2.0, 11.1, 111.1, 2222.2, 33333.3
+		} ;
+	static float fneg [] =
+	{	-0.95, -0.99, -1.0, -1.01, -1.1, -2.0, -11.1, -111.1, -2222.2, -33333.3
+		} ;
+
+	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 [] =
+	{	0.95, 0.99, 1.0, 1.01, 1.1, 2.0, 11.1, 111.1, 2222.2, 33333.3
+		} ;
+	static float fneg [] =
+	{	-0.95, -0.99, -1.0, -1.01, -1.1, -2.0, -11.1, -111.1, -2222.2, -33333.3
+		} ;
+
+	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 */
+