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

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Current libsamplerate source
author Chris Cannam
date Tue, 18 Oct 2016 13:24:45 +0100
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40:1df64224f5ac 41:481f5f8c5634
1 /*
2 ** Copyright (c) 2003-2016, 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 <string.h>
12
13 #include <samplerate.h>
14
15 #include "util.h"
16
17 #define BUFFER_LEN 10000
18
19 static void float_to_short_test (void) ;
20 static void short_to_float_test (void) ;
21
22 static void float_to_int_test (void) ;
23 static void int_to_float_test (void) ;
24
25 int
26 main (void)
27 {
28 puts ("") ;
29
30 float_to_short_test () ;
31 short_to_float_test () ;
32
33 float_to_int_test () ;
34 int_to_float_test () ;
35
36 puts ("") ;
37
38 return 0 ;
39 } /* main */
40
41 /*=====================================================================================
42 */
43
44 static void
45 float_to_short_test (void)
46 {
47 static float fpos [] =
48 { 0.95, 0.99, 1.0, 1.01, 1.1, 2.0, 11.1, 111.1, 2222.2, 33333.3
49 } ;
50 static float fneg [] =
51 { -0.95, -0.99, -1.0, -1.01, -1.1, -2.0, -11.1, -111.1, -2222.2, -33333.3
52 } ;
53
54 static short out [MAX (ARRAY_LEN (fpos), ARRAY_LEN (fneg))] ;
55
56 int k ;
57
58 printf ("\tfloat_to_short_test ............................. ") ;
59
60 src_float_to_short_array (fpos, out, ARRAY_LEN (fpos)) ;
61
62 for (k = 0 ; k < ARRAY_LEN (fpos) ; k++)
63 if (out [k] < 30000)
64 { printf ("\n\n\tLine %d : out [%d] == %d\n", __LINE__, k, out [k]) ;
65 exit (1) ;
66 } ;
67
68 src_float_to_short_array (fneg, out, ARRAY_LEN (fneg)) ;
69
70 for (k = 0 ; k < ARRAY_LEN (fneg) ; k++)
71 if (out [k] > -30000)
72 { printf ("\n\n\tLine %d : out [%d] == %d\n", __LINE__, k, out [k]) ;
73 exit (1) ;
74 } ;
75
76 puts ("ok") ;
77
78 return ;
79 } /* float_to_short_test */
80
81 /*-------------------------------------------------------------------------------------
82 */
83
84 static void
85 short_to_float_test (void)
86 {
87 static short input [BUFFER_LEN] ;
88 static short output [BUFFER_LEN] ;
89 static float temp [BUFFER_LEN] ;
90
91 int k ;
92
93 printf ("\tshort_to_float_test ............................. ") ;
94
95 for (k = 0 ; k < ARRAY_LEN (input) ; k++)
96 input [k] = (k * 0x8000) / ARRAY_LEN (input) ;
97
98 src_short_to_float_array (input, temp, ARRAY_LEN (temp)) ;
99 src_float_to_short_array (temp, output, ARRAY_LEN (output)) ;
100
101 for (k = 0 ; k < ARRAY_LEN (input) ; k++)
102 if (ABS (input [k] - output [k]) > 0)
103 { printf ("\n\n\tLine %d : index %d %d -> %d\n", __LINE__, k, input [k], output [k]) ;
104 exit (1) ;
105 } ;
106
107 puts ("ok") ;
108
109 return ;
110 } /* short_to_float_test */
111
112 /*=====================================================================================
113 */
114
115 static void
116 float_to_int_test (void)
117 {
118 static float fpos [] =
119 { 0.95, 0.99, 1.0, 1.01, 1.1, 2.0, 11.1, 111.1, 2222.2, 33333.3
120 } ;
121 static float fneg [] =
122 { -0.95, -0.99, -1.0, -1.01, -1.1, -2.0, -11.1, -111.1, -2222.2, -33333.3
123 } ;
124
125 static int out [MAX (ARRAY_LEN (fpos), ARRAY_LEN (fneg))] ;
126
127 int k ;
128
129 printf ("\tfloat_to_int_test ............................... ") ;
130
131 src_float_to_int_array (fpos, out, ARRAY_LEN (fpos)) ;
132
133 for (k = 0 ; k < ARRAY_LEN (fpos) ; k++)
134 if (out [k] < 30000 * 0x10000)
135 { printf ("\n\n\tLine %d : out [%d] == %d\n", __LINE__, k, out [k]) ;
136 exit (1) ;
137 } ;
138
139 src_float_to_int_array (fneg, out, ARRAY_LEN (fneg)) ;
140
141 for (k = 0 ; k < ARRAY_LEN (fneg) ; k++)
142 if (out [k] > -30000 * 0x1000)
143 { printf ("\n\n\tLine %d : out [%d] == %d\n", __LINE__, k, out [k]) ;
144 exit (1) ;
145 } ;
146
147 puts ("ok") ;
148
149 return ;
150 } /* float_to_int_test */
151
152 /*-------------------------------------------------------------------------------------
153 */
154
155 static void
156 int_to_float_test (void)
157 {
158 static int input [BUFFER_LEN] ;
159 static int output [BUFFER_LEN] ;
160 static float temp [BUFFER_LEN] ;
161
162 int k ;
163
164 printf ("\tint_to_float_test ............................... ") ;
165
166 for (k = 0 ; k < ARRAY_LEN (input) ; k++)
167 input [k] = (k * 0x80000000) / ARRAY_LEN (input) ;
168
169 src_int_to_float_array (input, temp, ARRAY_LEN (temp)) ;
170 src_float_to_int_array (temp, output, ARRAY_LEN (output)) ;
171
172 for (k = 0 ; k < ARRAY_LEN (input) ; k++)
173 if (ABS (input [k] - output [k]) > 0)
174 { printf ("\n\n\tLine %d : index %d %d -> %d\n", __LINE__, k, input [k], output [k]) ;
175 exit (1) ;
176 } ;
177
178 puts ("ok") ;
179
180 return ;
181 } /* int_to_float_test */
182