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5
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1 /*
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2 * SpanDSP - a series of DSP components for telephony
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3 *
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4 * r2_mf_tx_tests.c - Test the Bell MF generator.
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5 *
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6 * Written by Steve Underwood <steveu@coppice.org>
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7 *
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8 * Copyright (C) 2003 Steve Underwood
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9 *
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10 * All rights reserved.
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11 *
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12 * This program is free software; you can redistribute it and/or modify
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13 * it under the terms of the GNU General Public License version 2, as
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14 * published by the Free Software Foundation.
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15 *
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16 * This program is distributed in the hope that it will be useful,
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17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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19 * GNU General Public License for more details.
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20 *
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21 * You should have received a copy of the GNU General Public License
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22 * along with this program; if not, write to the Free Software
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23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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24 *
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25 * $Id: r2_mf_tx_tests.c,v 1.4 2006/11/19 14:07:27 steveu Exp $
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26 */
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27
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28 /*! \file */
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29
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30 /*! \page r2_mf_tx_tests_page R2 MF generation tests
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31 \section r2_mf_tx_tests_page_sec_1 What does it do?
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32 ???.
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33
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34 \section r2_mf_tx_tests_page_sec_2 How does it work?
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35 ???.
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36 */
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37
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38 #ifdef HAVE_CONFIG_H
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39 #include "config.h"
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40 #endif
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41
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42 #include <stdlib.h>
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43 #include <inttypes.h>
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44 #include <string.h>
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45 #include <stdio.h>
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46 #if defined(HAVE_TGMATH_H)
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47 #include <tgmath.h>
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48 #endif
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49 #if defined(HAVE_MATH_H)
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50 #include <math.h>
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51 #endif
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52 #include <time.h>
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53 #include <fcntl.h>
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54 #include <audiofile.h>
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55 #include <tiffio.h>
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56
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57 #include "spandsp.h"
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58
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59 #define OUTPUT_FILE_NAME "r2_mf.wav"
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60
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61 int main(int argc, char *argv[])
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62 {
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63 r2_mf_tx_state_t gen;
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64 int16_t amp[1000];
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65 int len;
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66 AFfilehandle outhandle;
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67 AFfilesetup filesetup;
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68 int outframes;
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69 int fwd;
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70 int digit;
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71 const char *digits = "0123456789BCDEF";
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72
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73 filesetup = afNewFileSetup();
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74 if (filesetup == AF_NULL_FILESETUP)
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75 {
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76 fprintf(stderr, " Failed to create file setup\n");
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77 exit(2);
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78 }
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79 afInitSampleFormat(filesetup, AF_DEFAULT_TRACK, AF_SAMPFMT_TWOSCOMP, 16);
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80 afInitRate(filesetup, AF_DEFAULT_TRACK, 8000.0);
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81 //afInitCompression(filesetup, AF_DEFAULT_TRACK, AF_COMPRESSION_G711_ALAW);
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82 afInitFileFormat(filesetup, AF_FILE_WAVE);
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83 afInitChannels(filesetup, AF_DEFAULT_TRACK, 1);
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84
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85 outhandle = afOpenFile(OUTPUT_FILE_NAME, "w", filesetup);
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86 if (outhandle == AF_NULL_FILEHANDLE)
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87 {
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88 fprintf(stderr, " Cannot open wave file '%s'\n", OUTPUT_FILE_NAME);
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89 exit(2);
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90 }
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91
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92 r2_mf_tx_init(&gen);
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93 fwd = FALSE;
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94 for (digit = 0; digits[digit]; digit++)
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95 {
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96 len = r2_mf_tx(&gen, amp, 1000, fwd, digits[digit]);
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97 printf("Generated %d samples of %c\n", len, digits[digit]);
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98 if (len > 0)
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99 {
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100 outframes = afWriteFrames(outhandle,
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101 AF_DEFAULT_TRACK,
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102 amp,
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103 len);
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104 }
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105 len = r2_mf_tx(&gen, amp, 1000, fwd, 0);
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106 printf("Generated %d samples\n", len);
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107 if (len > 0)
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108 {
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109 outframes = afWriteFrames(outhandle,
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110 AF_DEFAULT_TRACK,
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111 amp,
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112 len);
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113 }
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114 }
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115
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116 fwd = TRUE;
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117 for (digit = 0; digits[digit]; digit++)
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118 {
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119 len = r2_mf_tx(&gen, amp, 1000, fwd, digits[digit]);
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120 printf("Generated %d samples of %c\n", len, digits[digit]);
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121 if (len > 0)
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122 {
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123 outframes = afWriteFrames(outhandle,
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124 AF_DEFAULT_TRACK,
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125 amp,
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126 len);
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127 }
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128 len = r2_mf_tx(&gen, amp, 1000, fwd, 0);
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129 printf("Generated %d samples\n", len);
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130 if (len > 0)
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131 {
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132 outframes = afWriteFrames(outhandle,
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133 AF_DEFAULT_TRACK,
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134 amp,
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135 len);
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136 }
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137 }
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138
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139 if (afCloseFile(outhandle) != 0)
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140 {
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141 fprintf(stderr, " Cannot close wave file '%s'\n", OUTPUT_FILE_NAME);
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142 exit (2);
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143 }
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144 afFreeFileSetup(filesetup);
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145
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146 return 0;
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147 }
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148 /*- End of function --------------------------------------------------------*/
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149 /*- End of file ------------------------------------------------------------*/
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