Mercurial > hg > audiostuff
comparison spandsp-0.0.6pre17/tests/swept_tone_tests.c @ 4:26cd8f1ef0b1
import spandsp-0.0.6pre17
author | Peter Meerwald <pmeerw@cosy.sbg.ac.at> |
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date | Fri, 25 Jun 2010 15:50:58 +0200 |
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3:c6c5a16ce2f2 | 4:26cd8f1ef0b1 |
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1 /* | |
2 * SpanDSP - a series of DSP components for telephony | |
3 * | |
4 * swept_tone_tests.c | |
5 * | |
6 * Written by Steve Underwood <steveu@coppice.org> | |
7 * | |
8 * Copyright (C) 2009 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: swept_tone_tests.c,v 1.2 2009/09/22 13:28:18 steveu Exp $ | |
26 */ | |
27 | |
28 /*! \file */ | |
29 | |
30 #if defined(HAVE_CONFIG_H) | |
31 #include "config.h" | |
32 #endif | |
33 | |
34 #include <stdlib.h> | |
35 #include <stdio.h> | |
36 #include <fcntl.h> | |
37 #include <memory.h> | |
38 #include <sndfile.h> | |
39 | |
40 #include "spandsp.h" | |
41 #include "spandsp-sim.h" | |
42 | |
43 #define OUTPUT_FILE_NAME "swept_tone.wav" | |
44 | |
45 #define BLOCK_LEN 160 | |
46 | |
47 int main(int argc, char *argv[]) | |
48 { | |
49 int i; | |
50 int j; | |
51 int outframes; | |
52 int len; | |
53 SNDFILE *outhandle; | |
54 power_meter_t meter; | |
55 swept_tone_state_t *s; | |
56 int16_t buf[BLOCK_LEN]; | |
57 | |
58 power_meter_init(&meter, 10); | |
59 | |
60 if ((outhandle = sf_open_telephony_write(OUTPUT_FILE_NAME, 1)) == NULL) | |
61 { | |
62 fprintf(stderr, " Cannot create audio file '%s'\n", OUTPUT_FILE_NAME); | |
63 exit(2); | |
64 } | |
65 | |
66 printf("Test with swept tone.\n"); | |
67 s = swept_tone_init(NULL, 200.0f, 3900.0f, -10.0f, 60*SAMPLE_RATE, 1); | |
68 for (j = 0; j < 60*SAMPLE_RATE; j += BLOCK_LEN) | |
69 { | |
70 len = swept_tone(s, buf, BLOCK_LEN); | |
71 for (i = 0; i < len; i++) | |
72 power_meter_update(&meter, buf[i]); | |
73 outframes = sf_writef_short(outhandle, buf, len); | |
74 if (outframes != len) | |
75 { | |
76 fprintf(stderr, " Error writing audio file\n"); | |
77 exit(2); | |
78 } | |
79 #if 0 | |
80 printf("Current freq %.1fHz, Level is %fdBOv/%fdBm0\n", | |
81 swept_tone_current_frequency(s), | |
82 power_meter_current_dbov(&meter), | |
83 power_meter_current_dbm0(&meter)); | |
84 #else | |
85 printf("%.1f %f\n", | |
86 swept_tone_current_frequency(s), | |
87 power_meter_current_dbm0(&meter)); | |
88 #endif | |
89 } | |
90 | |
91 if (sf_close(outhandle) != 0) | |
92 { | |
93 fprintf(stderr, " Cannot close audio file '%s'\n", OUTPUT_FILE_NAME); | |
94 exit(2); | |
95 } | |
96 | |
97 printf("Tests passed.\n"); | |
98 return 0; | |
99 } | |
100 /*- End of function --------------------------------------------------------*/ | |
101 /*- End of file ------------------------------------------------------------*/ |