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

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import spandsp-0.0.6pre17
author Peter Meerwald <pmeerw@cosy.sbg.ac.at>
date Fri, 25 Jun 2010 15:50:58 +0200
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3:c6c5a16ce2f2 4:26cd8f1ef0b1
1 /*
2 * SpanDSP - a series of DSP components for telephony
3 *
4 * dtmf_tx_tests.c - Test the DTMF generator.
5 *
6 * Written by Steve Underwood <steveu@coppice.org>
7 *
8 * Copyright (C) 2003 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: dtmf_tx_tests.c,v 1.23 2009/05/30 15:23:13 steveu Exp $
26 */
27
28 /*! \file */
29
30 /*! \page dtmf_tx_tests_page DTMF generation tests
31 \section dtmf_tx_tests_page_sec_1 What does it do?
32 ???.
33
34 \section dtmf_tx_tests_page_sec_2 How does it work?
35 ???.
36 */
37
38 #if defined(HAVE_CONFIG_H)
39 #include "config.h"
40 #endif
41
42 #include <stdlib.h>
43 #include <string.h>
44 #include <stdio.h>
45 #include <fcntl.h>
46 #include <time.h>
47 #include <sndfile.h>
48
49 //#if defined(WITH_SPANDSP_INTERNALS)
50 #define SPANDSP_EXPOSE_INTERNAL_STRUCTURES
51 //#endif
52
53 #include "spandsp.h"
54 #include "spandsp-sim.h"
55
56 #define OUTPUT_FILE_NAME "dtmf.wav"
57
58 int main(int argc, char *argv[])
59 {
60 dtmf_tx_state_t *gen;
61 int16_t amp[16384];
62 int len;
63 SNDFILE *outhandle;
64 int outframes;
65 int add_digits;
66
67 if ((outhandle = sf_open_telephony_write(OUTPUT_FILE_NAME, 1)) == NULL)
68 {
69 fprintf(stderr, " Cannot open audio file '%s'\n", OUTPUT_FILE_NAME);
70 exit(2);
71 }
72
73 gen = dtmf_tx_init(NULL);
74 len = dtmf_tx(gen, amp, 16384);
75 printf("Generated %d samples\n", len);
76 outframes = sf_writef_short(outhandle, amp, len);
77 if (dtmf_tx_put(gen, "123", -1))
78 {
79 printf("Ooops\n");
80 exit(2);
81 }
82 len = dtmf_tx(gen, amp, 16384);
83 printf("Generated %d samples\n", len);
84 outframes = sf_writef_short(outhandle, amp, len);
85 if (dtmf_tx_put(gen, "456", -1))
86 {
87 printf("Ooops\n");
88 exit(2);
89 }
90 len = dtmf_tx(gen, amp, 160);
91 printf("Generated %d samples\n", len);
92 outframes = sf_writef_short(outhandle, amp, len);
93 if (dtmf_tx_put(gen, "789", -1))
94 {
95 printf("Ooops\n");
96 exit(2);
97 }
98 len = dtmf_tx(gen, amp, 160);
99 printf("Generated %d samples\n", len);
100 outframes = sf_writef_short(outhandle, amp, len);
101 if (dtmf_tx_put(gen, "*#", -1))
102 {
103 printf("Ooops\n");
104 exit(2);
105 }
106 len = dtmf_tx(gen, amp, 160);
107 printf("Generated %d samples\n", len);
108 outframes = sf_writef_short(outhandle, amp, len);
109 add_digits = 1;
110 do
111 {
112 len = dtmf_tx(gen, amp, 160);
113 printf("Generated %d samples\n", len);
114 if (len > 0)
115 {
116 outframes = sf_writef_short(outhandle, amp, len);
117 }
118 if (add_digits)
119 {
120 if (dtmf_tx_put(gen, "1234567890", -1))
121 {
122 printf("Digit buffer full\n");
123 add_digits = 0;
124 }
125 }
126 }
127 while (len > 0);
128
129 dtmf_tx_init(gen);
130 len = dtmf_tx(gen, amp, 16384);
131 printf("Generated %d samples\n", len);
132 outframes = sf_writef_short(outhandle, amp, len);
133 if (dtmf_tx_put(gen, "123", -1))
134 {
135 printf("Ooops\n");
136 exit(2);
137 }
138 len = dtmf_tx(gen, amp, 16384);
139 printf("Generated %d samples\n", len);
140 outframes = sf_writef_short(outhandle, amp, len);
141 if (dtmf_tx_put(gen, "456", -1))
142 {
143 printf("Ooops\n");
144 exit(2);
145 }
146 len = dtmf_tx(gen, amp, 160);
147 printf("Generated %d samples\n", len);
148 outframes = sf_writef_short(outhandle, amp, len);
149 if (dtmf_tx_put(gen, "789", -1))
150 {
151 printf("Ooops\n");
152 exit(2);
153 }
154 len = dtmf_tx(gen, amp, 160);
155 printf("Generated %d samples\n", len);
156 outframes = sf_writef_short(outhandle, amp, len);
157 if (dtmf_tx_put(gen, "0*#", -1))
158 {
159 printf("Ooops\n");
160 exit(2);
161 }
162 len = dtmf_tx(gen, amp, 160);
163 printf("Generated %d samples\n", len);
164 outframes = sf_writef_short(outhandle, amp, len);
165 if (dtmf_tx_put(gen, "ABCD", -1))
166 {
167 printf("Ooops\n");
168 exit(2);
169 }
170 len = dtmf_tx(gen, amp, 160);
171 printf("Generated %d samples\n", len);
172 outframes = sf_writef_short(outhandle, amp, len);
173
174 /* Try modifying the level and length of the digits */
175 printf("Try different levels and timing\n");
176 dtmf_tx_set_level(gen, -20, 5);
177 dtmf_tx_set_timing(gen, 100, 200);
178 if (dtmf_tx_put(gen, "123", -1))
179 {
180 printf("Ooops\n");
181 exit(2);
182 }
183 do
184 {
185 len = dtmf_tx(gen, amp, 160);
186 printf("Generated %d samples\n", len);
187 if (len > 0)
188 outframes = sf_writef_short(outhandle, amp, len);
189 }
190 while (len > 0);
191 printf("Restore normal levels and timing\n");
192 dtmf_tx_set_level(gen, -10, 0);
193 dtmf_tx_set_timing(gen, 50, 55);
194 if (dtmf_tx_put(gen, "A", -1))
195 {
196 printf("Ooops\n");
197 exit(2);
198 }
199
200 add_digits = TRUE;
201 do
202 {
203 len = dtmf_tx(gen, amp, 160);
204 printf("Generated %d samples\n", len);
205 if (len > 0)
206 {
207 outframes = sf_writef_short(outhandle, amp, len);
208 }
209 if (add_digits)
210 {
211 if (dtmf_tx_put(gen, "1234567890", -1))
212 {
213 printf("Digit buffer full\n");
214 add_digits = FALSE;
215 }
216 }
217 }
218 while (len > 0);
219
220 if (sf_close(outhandle) != 0)
221 {
222 fprintf(stderr, " Cannot close audio file '%s'\n", OUTPUT_FILE_NAME);
223 exit(2);
224 }
225
226 return 0;
227 }
228 /*- End of function --------------------------------------------------------*/
229 /*- End of file ------------------------------------------------------------*/

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