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comparison sound.c @ 3:5a977ccbc7a9 default tip

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author darius
date Sat, 06 Dec 1997 05:41:29 +0000
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2:fba0b6e6cdc7 3:5a977ccbc7a9
1 /*
2 * sound.c - Platform Independant Sound Support - July 1996
3 * Sujal M. Patel (smpatel@umiacs.umd.edu)
4 *
5 *
6 * Copyright (c) 1994-1996, Sujal M. Patel
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 * $Id: sound.c,v 1.1.1.1 1997/12/06 05:41:30 darius Exp $
31 */
32
33 #include <stdio.h>
34 #ifdef __STDC__
35 #include <stdlib.h>
36 #endif
37 #include <unistd.h>
38 #include <sys/time.h>
39 #include <fcntl.h>
40 #include <signal.h>
41 #include <sys/stat.h>
42 #include "data.h"
43
44
45
46 static int soundfd;
47 static char audioOK = 1;
48 static char sound_flags[20]; /* Sound Flag for sound 1-19 */
49
50
51
52 void init_sound ()
53 {
54 int i, pid, child,fd[2];
55 char *argv[4];
56 char filename[512];
57 #ifdef linux
58 char *arch = "linux";
59 #else
60 #ifdef __FreeBSD__
61 char *arch = "freebsd";
62 #else
63 #ifdef __NetBSD__
64 char *arch = "netbsd";
65 #else
66 #ifdef sun
67 char *arch = "sun";
68 #else
69 #ifdef foo
70 char *arch = "foobar";
71 #else
72 char *arch = "generic";
73 #endif
74 #endif
75 #endif
76 #endif
77 #endif
78
79 signal(SIGCHLD, SIG_IGN);
80
81 if(unixSoundPath[0] == '?') {
82 audioOK = 0;
83 return;
84 };
85
86 /* Create a pipe, set the write end to close when we exec the sound server,
87 and set both (is the write end necessary?) ends to non-blocking */
88 pipe(fd);
89 soundfd=fd[1];
90
91 if( !(child=fork()) ) {
92 close(fd[1]);
93 dup2(fd[0],STDIN_FILENO);
94 close(fd[0]);
95 sprintf (filename, "paradise.sndsrv.%s", arch);
96 argv[0] = filename;
97 argv[1] = unixSoundPath;
98 argv[2] = unixSoundDev;
99 argv[3] = NULL;
100 execvp(filename, argv);
101 fprintf (stderr, "Couldn't Execute Sound Server (paradise.sndsrv.%s)!\n", arch);
102 exit (0);
103 };
104 close(fd[0]);
105
106 sleep(1);
107
108 if (kill(child, 0)) {
109 audioOK = 0;
110 close(soundfd);
111 };
112
113 for (i = 0; i < 19; i++) sound_flags[i] = 0;
114 }
115
116 void play_sound (k)
117 int k;
118 {
119 char c;
120
121 c = k;
122 if ((playSounds) && (audioOK)) write (soundfd, &c, sizeof (c));
123 }
124
125
126
127 void maybe_play_sound (k)
128 int k;
129 {
130 char c;
131
132 if (sound_flags[k] & 1) return;
133
134 sound_flags[k] |= 1;
135
136 c = (unsigned char)(k);
137 if ((playSounds) && (audioOK)) write (soundfd, &c, sizeof (c));
138 }
139
140
141
142 void sound_completed (k)
143 int k;
144 {
145 sound_flags[k] &= ~1;
146 }
147
148
149
150 void kill_sound ()
151 {
152 char c;
153
154 c = -1;
155 if ((playSounds) && (audioOK)) write (soundfd, &c, sizeof (c));
156 }