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comparison spandsp-0.0.6pre17/tests/r2_mf_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 * r2_mf_tx_tests.c - Test the Bell MF 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: r2_mf_tx_tests.c,v 1.16 2009/05/30 15:23:14 steveu Exp $
26 */
27
28 /*! \file */
29
30 /*! \page r2_mf_tx_tests_page R2 MF generation tests
31 \section r2_mf_tx_tests_page_sec_1 What does it do?
32 ???.
33
34 \section r2_mf_tx_tests_page_sec_2 How does it work?
35 ???.
36 */
37
38 /* Enable the following definition to enable direct probing into the FAX structures */
39 //#define WITH_SPANDSP_INTERNALS
40
41 #if defined(HAVE_CONFIG_H)
42 #include "config.h"
43 #endif
44
45 #include <stdlib.h>
46 #include <stdio.h>
47 #include <fcntl.h>
48 #include <string.h>
49 #include <time.h>
50 #include <sndfile.h>
51
52 //#if defined(WITH_SPANDSP_INTERNALS)
53 #define SPANDSP_EXPOSE_INTERNAL_STRUCTURES
54 //#endif
55
56 #include "spandsp.h"
57 #include "spandsp-sim.h"
58
59 #define OUTPUT_FILE_NAME "r2_mf.wav"
60
61 int main(int argc, char *argv[])
62 {
63 r2_mf_tx_state_t gen;
64 int16_t amp[1000];
65 int len;
66 SNDFILE *outhandle;
67 int outframes;
68 int digit;
69 const char *digits = "0123456789BCDEF";
70
71 if ((outhandle = sf_open_telephony_write(OUTPUT_FILE_NAME, 1)) == NULL)
72 {
73 fprintf(stderr, " Cannot open audio file '%s'\n", OUTPUT_FILE_NAME);
74 exit(2);
75 }
76
77 r2_mf_tx_init(&gen, FALSE);
78 for (digit = 0; digits[digit]; digit++)
79 {
80 r2_mf_tx_put(&gen, digits[digit]);
81 len = r2_mf_tx(&gen, amp, 1000);
82 printf("Generated %d samples of %c\n", len, digits[digit]);
83 if (len > 0)
84 outframes = sf_writef_short(outhandle, amp, len);
85 r2_mf_tx_put(&gen, 0);
86 len = r2_mf_tx(&gen, amp, 1000);
87 printf("Generated %d samples\n", len);
88 if (len > 0)
89 outframes = sf_writef_short(outhandle, amp, len);
90 }
91
92 r2_mf_tx_init(&gen, TRUE);
93 for (digit = 0; digits[digit]; digit++)
94 {
95 r2_mf_tx_put(&gen, digits[digit]);
96 len = r2_mf_tx(&gen, amp, 1000);
97 printf("Generated %d samples of %c\n", len, digits[digit]);
98 if (len > 0)
99 outframes = sf_writef_short(outhandle, amp, len);
100 r2_mf_tx_put(&gen, 0);
101 len = r2_mf_tx(&gen, amp, 1000);
102 printf("Generated %d samples\n", len);
103 if (len > 0)
104 outframes = sf_writef_short(outhandle, amp, len);
105 }
106
107 if (sf_close(outhandle) != 0)
108 {
109 fprintf(stderr, " Cannot close audio file '%s'\n", OUTPUT_FILE_NAME);
110 exit (2);
111 }
112
113 return 0;
114 }
115 /*- End of function --------------------------------------------------------*/
116 /*- End of file ------------------------------------------------------------*/

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