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3
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1 /*
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2 * sound.c - Platform Independant Sound Support - July 1996
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3 * Sujal M. Patel (smpatel@umiacs.umd.edu)
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4 *
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5 *
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6 * Copyright (c) 1994-1996, Sujal M. Patel
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7 * All rights reserved.
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8 *
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9 * Redistribution and use in source and binary forms, with or without
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10 * modification, are permitted provided that the following conditions
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11 * are met:
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12 * 1. Redistributions of source code must retain the above copyright
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13 * notice, this list of conditions and the following disclaimer.
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14 * 2. Redistributions in binary form must reproduce the above copyright
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15 * notice, this list of conditions and the following disclaimer in the
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16 * documentation and/or other materials provided with the distribution.
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17 *
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18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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28 * SUCH DAMAGE.
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29 *
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30 * $Id: sound.c,v 1.1.1.1 1997/12/06 05:41:30 darius Exp $
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31 */
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32
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33 #include <stdio.h>
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34 #ifdef __STDC__
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35 #include <stdlib.h>
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36 #endif
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37 #include <unistd.h>
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38 #include <sys/time.h>
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39 #include <fcntl.h>
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40 #include <signal.h>
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41 #include <sys/stat.h>
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42 #include "data.h"
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43
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44
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45
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46 static int soundfd;
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47 static char audioOK = 1;
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48 static char sound_flags[20]; /* Sound Flag for sound 1-19 */
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49
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50
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51
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52 void init_sound ()
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53 {
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54 int i, pid, child,fd[2];
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55 char *argv[4];
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56 char filename[512];
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57 #ifdef linux
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58 char *arch = "linux";
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59 #else
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60 #ifdef __FreeBSD__
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61 char *arch = "freebsd";
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62 #else
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63 #ifdef __NetBSD__
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64 char *arch = "netbsd";
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65 #else
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66 #ifdef sun
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67 char *arch = "sun";
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68 #else
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69 #ifdef foo
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70 char *arch = "foobar";
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71 #else
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72 char *arch = "generic";
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73 #endif
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74 #endif
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75 #endif
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76 #endif
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77 #endif
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78
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79 signal(SIGCHLD, SIG_IGN);
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80
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81 if(unixSoundPath[0] == '?') {
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82 audioOK = 0;
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83 return;
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84 };
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85
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86 /* Create a pipe, set the write end to close when we exec the sound server,
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87 and set both (is the write end necessary?) ends to non-blocking */
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88 pipe(fd);
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89 soundfd=fd[1];
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90
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91 if( !(child=fork()) ) {
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92 close(fd[1]);
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93 dup2(fd[0],STDIN_FILENO);
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94 close(fd[0]);
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95 sprintf (filename, "paradise.sndsrv.%s", arch);
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96 argv[0] = filename;
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97 argv[1] = unixSoundPath;
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98 argv[2] = unixSoundDev;
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99 argv[3] = NULL;
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100 execvp(filename, argv);
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101 fprintf (stderr, "Couldn't Execute Sound Server (paradise.sndsrv.%s)!\n", arch);
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102 exit (0);
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103 };
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104 close(fd[0]);
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105
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106 sleep(1);
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107
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108 if (kill(child, 0)) {
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109 audioOK = 0;
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110 close(soundfd);
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111 };
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112
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113 for (i = 0; i < 19; i++) sound_flags[i] = 0;
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114 }
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115
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116 void play_sound (k)
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117 int k;
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118 {
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119 char c;
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120
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121 c = k;
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122 if ((playSounds) && (audioOK)) write (soundfd, &c, sizeof (c));
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123 }
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124
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125
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126
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127 void maybe_play_sound (k)
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128 int k;
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129 {
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130 char c;
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131
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132 if (sound_flags[k] & 1) return;
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133
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134 sound_flags[k] |= 1;
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135
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136 c = (unsigned char)(k);
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137 if ((playSounds) && (audioOK)) write (soundfd, &c, sizeof (c));
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138 }
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139
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140
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141
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142 void sound_completed (k)
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143 int k;
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144 {
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145 sound_flags[k] &= ~1;
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146 }
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147
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148
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149
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150 void kill_sound ()
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151 {
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152 char c;
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153
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154 c = -1;
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155 if ((playSounds) && (audioOK)) write (soundfd, &c, sizeof (c));
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156 }
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