1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
|
// Emacs style mode select -*- C++ -*-
//-----------------------------------------------------------------------------
//
// Copyright(C) 2007 Simon Howard
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
// 02111-1307, USA.
//
// DESCRIPTION:
// PC speaker interface.
//
//-----------------------------------------------------------------------------
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "config.h"
#include "pcsound.h"
#include "pcsound_internal.h"
#ifdef _WIN32
extern pcsound_driver_t pcsound_win32_driver;
#endif
#ifdef HAVE_DEV_ISA_SPKRIO_H
extern pcsound_driver_t pcsound_bsd_driver;
#endif
#ifdef HAVE_LINUX_KD_H
extern pcsound_driver_t pcsound_linux_driver;
#endif
extern pcsound_driver_t pcsound_sdl_driver;
static pcsound_driver_t *drivers[] =
{
#ifdef HAVE_LINUX_KD_H
&pcsound_linux_driver,
#endif
#ifdef HAVE_DEV_ISA_SPKRIO_H
&pcsound_bsd_driver,
#endif
#ifdef _WIN32
&pcsound_win32_driver,
#endif
&pcsound_sdl_driver,
NULL,
};
static pcsound_driver_t *pcsound_driver = NULL;
int pcsound_sample_rate;
void PCSound_SetSampleRate(int rate)
{
pcsound_sample_rate = rate;
}
int PCSound_Init(pcsound_callback_func callback_func)
{
char *driver_name;
int i;
if (pcsound_driver != NULL)
{
return 1;
}
// Check if the environment variable is set
driver_name = getenv("PCSOUND_DRIVER");
if (driver_name != NULL)
{
for (i=0; drivers[i] != NULL; ++i)
{
if (!strcmp(drivers[i]->name, driver_name))
{
// Found the driver!
if (drivers[i]->init_func(callback_func))
{
pcsound_driver = drivers[i];
}
else
{
printf("Failed to initialise PC sound driver: %s\n",
drivers[i]->name);
break;
}
}
}
}
else
{
// Try all drivers until we find a working one
for (i=0; drivers[i] != NULL; ++i)
{
if (drivers[i]->init_func(callback_func))
{
pcsound_driver = drivers[i];
break;
}
}
}
if (pcsound_driver != NULL)
{
printf("Using PC sound driver: %s\n", pcsound_driver->name);
return 1;
}
else
{
printf("Failed to find a working PC sound driver.\n");
return 0;
}
}
void PCSound_Shutdown(void)
{
pcsound_driver->shutdown_func();
pcsound_driver = NULL;
}
|
