Mercurial > hg > audiostuff

comparison spandsp-0.0.6pre17/tests/tone_generate_tests.c @ 4:26cd8f1ef0b1

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
import spandsp-0.0.6pre17
author Peter Meerwald <pmeerw@cosy.sbg.ac.at>
date Fri, 25 Jun 2010 15:50:58 +0200
parents
children
comparison
equal deleted inserted replaced
3:c6c5a16ce2f2 4:26cd8f1ef0b1
1 /*
2 * SpanDSP - a series of DSP components for telephony
3 *
4 * tone_generate_tests.c
5 *
6 * Written by Steve Underwood <steveu@coppice.org>
7 *
8 * Copyright (C) 2001 Steve Underwood
9 *
10 * All rights reserved.
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2, as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 *
25 * $Id: tone_generate_tests.c,v 1.22 2009/05/30 15:23:14 steveu Exp $
26 */
27
28 /*! \page tone_generate_tests_page Tone generation tests
29 \section tone_generate_tests_page_sec_1 What does it do?
30 */
31
32 #if defined(HAVE_CONFIG_H)
33 #include "config.h"
34 #endif
35
36 #include <stdlib.h>
37 #include <stdio.h>
38 #include <fcntl.h>
39 #include <string.h>
40 #include <time.h>
41 #include <sndfile.h>
42
43 //#if defined(WITH_SPANDSP_INTERNALS)
44 #define SPANDSP_EXPOSE_INTERNAL_STRUCTURES
45 //#endif
46
47 #include "spandsp.h"
48 #include "spandsp-sim.h"
49
50 #define OUTPUT_FILE_NAME "tone_generate.wav"
51
52 int main(int argc, char *argv[])
53 {
54 tone_gen_descriptor_t tone_desc;
55 tone_gen_state_t tone_state;
56 int i;
57 int16_t amp[16384];
58 int len;
59 SNDFILE *outhandle;
60 int outframes;
61
62 if ((outhandle = sf_open_telephony_write(OUTPUT_FILE_NAME, 1)) == NULL)
63 {
64 fprintf(stderr, " Cannot open audio file '%s'\n", OUTPUT_FILE_NAME);
65 exit(2);
66 }
67
68 /* Try a tone pair */
69 make_tone_gen_descriptor(&tone_desc,
70 440,
71 -10,
72 620,
73 -15,
74 100,
75 200,
76 300,
77 400,
78 FALSE);
79 tone_gen_init(&tone_state, &tone_desc);
80
81 for (i = 0; i < 1000; i++)
82 {
83 len = tone_gen(&tone_state, amp, 160);
84 printf("Generated %d samples\n", len);
85 if (len <= 0)
86 break;
87 outframes = sf_writef_short(outhandle, amp, len);
88 }
89
90 /* Try a different tone pair */
91 make_tone_gen_descriptor(&tone_desc,
92 350,
93 -10,
94 440,
95 -15,
96 400,
97 300,
98 200,
99 100,
100 TRUE);
101 tone_gen_init(&tone_state, &tone_desc);
102
103 for (i = 0; i < 1000; i++)
104 {
105 len = tone_gen(&tone_state, amp, 160);
106 printf("Generated %d samples\n", len);
107 if (len <= 0)
108 break;
109 outframes = sf_writef_short(outhandle, amp, len);
110 }
111
112 /* Try a different tone pair */
113 make_tone_gen_descriptor(&tone_desc,
114 400,
115 -10,
116 450,
117 -10,
118 100,
119 200,
120 300,
121 400,
122 TRUE);
123 tone_gen_init(&tone_state, &tone_desc);
124
125 for (i = 0; i < 1000; i++)
126 {
127 len = tone_gen(&tone_state, amp, 160);
128 printf("Generated %d samples\n", len);
129 if (len <= 0)
130 break;
131 outframes = sf_writef_short(outhandle, amp, len);
132 }
133
134 /* Try a single tone */
135 make_tone_gen_descriptor(&tone_desc,
136 400,
137 -10,
138 0,
139 0,
140 100,
141 200,
142 300,
143 400,
144 TRUE);
145 tone_gen_init(&tone_state, &tone_desc);
146
147 for (i = 0; i < 1000; i++)
148 {
149 len = tone_gen(&tone_state, amp, 160);
150 printf("Generated %d samples\n", len);
151 if (len <= 0)
152 break;
153 outframes = sf_writef_short(outhandle, amp, len);
154 }
155
156 /* Try a single non-repeating tone */
157 make_tone_gen_descriptor(&tone_desc,
158 820,
159 -10,
160 0,
161 0,
162 2000,
163 0,
164 0,
165 0,
166 FALSE);
167 tone_gen_init(&tone_state, &tone_desc);
168
169 for (i = 0; i < 1000; i++)
170 {
171 len = tone_gen(&tone_state, amp, 160);
172 printf("Generated %d samples\n", len);
173 if (len <= 0)
174 break;
175 outframes = sf_writef_short(outhandle, amp, len);
176 }
177
178 /* Try a single non-repeating tone at 0dBm0 */
179 make_tone_gen_descriptor(&tone_desc,
180 820,
181 0,
182 0,
183 0,
184 2000,
185 0,
186 0,
187 0,
188 FALSE);
189 tone_gen_init(&tone_state, &tone_desc);
190
191 for (i = 0; i < 1000; i++)
192 {
193 len = tone_gen(&tone_state, amp, 160);
194 printf("Generated %d samples\n", len);
195 if (len <= 0)
196 break;
197 outframes = sf_writef_short(outhandle, amp, len);
198 }
199
200 /* Try an AM modulated tone at a modest modulation level (25%) */
201 make_tone_gen_descriptor(&tone_desc,
202 425,
203 -10,
204 -50,
205 25,
206 100,
207 200,
208 300,
209 400,
210 TRUE);
211 tone_gen_init(&tone_state, &tone_desc);
212
213 for (i = 0; i < 1000; i++)
214 {
215 len = tone_gen(&tone_state, amp, 160);
216 printf("Generated %d samples\n", len);
217 if (len <= 0)
218 break;
219 outframes = sf_writef_short(outhandle, amp, len);
220 }
221
222 /* Try an AM modulated tone at maximum modulation level (100%) */
223 make_tone_gen_descriptor(&tone_desc,
224 425,
225 -10,
226 -50,
227 100,
228 100,
229 200,
230 300,
231 400,
232 TRUE);
233 tone_gen_init(&tone_state, &tone_desc);
234
235 for (i = 0; i < 1000; i++)
236 {
237 len = tone_gen(&tone_state, amp, 160);
238 printf("Generated %d samples\n", len);
239 if (len <= 0)
240 break;
241 outframes = sf_writef_short(outhandle, amp, len);
242 }
243
244 if (sf_close(outhandle) != 0)
245 {
246 fprintf(stderr, " Cannot close audio file '%s'\n", OUTPUT_FILE_NAME);
247 exit (2);
248 }
249
250 return 0;
251 }
252 /*- End of function --------------------------------------------------------*/
253 /*- End of file ------------------------------------------------------------*/

Repositories maintained by Peter Meerwald, pmeerw@pmeerw.net.