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
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
|
/**************************************************************************\
*
* This file is part of the Coin 3D visualization library.
* Copyright (C) by Kongsberg Oil & Gas Technologies.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* ("GPL") version 2 as published by the Free Software Foundation.
* See the file LICENSE.GPL at the root directory of this source
* distribution for additional information about the GNU GPL.
*
* For using Coin with software that can not be combined with the GNU
* GPL, and for taking advantage of the additional benefits of our
* support services, please contact Kongsberg Oil & Gas Technologies
* about acquiring a Coin Professional Edition License.
*
* See http://www.coin3d.org/ for more information.
*
* Kongsberg Oil & Gas Technologies, Bygdoy Alle 5, 0257 Oslo, NORWAY.
* http://www.sim.no/ sales@sim.no coin-support@coin3d.org
*
\**************************************************************************/
#include "glue/openal_wrapper.h"
#ifdef HAVE_CONFIG_H
#include "config.h"
#else /* No config.h? Hmm. Assume the openal library is not available for linking. */
#define OPENALWRAPPER_ASSUME_OPENAL 0
#endif /* !HAVE_CONFIG_H */
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <Inventor/C/basic.h>
#include <Inventor/C/glue/dl.h>
#include <Inventor/C/tidbits.h>
#include <Inventor/C/errors/debugerror.h>
#include "threads/threadsutilp.h"
#include "tidbitsp.h"
#ifdef HAVE_OPENAL /* In case we're _not_ doing runtime linking. */
#define OPENALWRAPPER_ASSUME_OPENAL 1
#endif /* HAVE_OPENAL */
#if OPENALWRAPPER_ASSUME_OPENAL
#if defined HAVE_AL_AL_H
#include <AL/al.h>
#include <AL/alc.h>
#elif defined HAVE_OPENAL_AL_H
#include <OpenAL/al.h>
#include <OpenAL/alc.h>
#endif
#endif /* OPENALWRAPPER_ASSUME_OPENAL */
static openal_wrapper_t * openal_instance = NULL;
static cc_libhandle openal_libhandle = NULL;
static int openal_failed_to_load = 0;
static int openal_is_initializing = 0;
/* Cleans up at exit. */
static void
openal_wrapper_cleanup(void)
{
#ifdef OPENAL_RUNTIME_LINKING
if (openal_libhandle) {
cc_dl_close(openal_libhandle);
openal_libhandle = NULL;
}
#endif /* OPENAL_RUNTIME_LINKING */
assert(openal_instance);
free(openal_instance);
openal_instance = NULL;
openal_failed_to_load = 0;
openal_is_initializing = 0;
}
/* Implemented by using the singleton pattern. */
const openal_wrapper_t *
openal_wrapper(void)
{
CC_SYNC_BEGIN(openal_wrapper);
if (!openal_instance && !openal_failed_to_load) {
/* First invocation, do initializations. */
openal_wrapper_t * oal = (openal_wrapper_t *)malloc(sizeof(openal_wrapper_t));
/* FIXME: Verify that atexit works when Coin is used in an ActiveX
dll also. 2003-01-27 thammer. */
coin_atexit((coin_atexit_f *)openal_wrapper_cleanup, CC_ATEXIT_DYNLIBS);
/* Detect recursive calls. */
{
assert(openal_is_initializing == 0);
openal_is_initializing = 1;
}
/* The common case is that simage is either available from the
linking process or we're successfully going to link it in. */
oal->available = 1;
#ifdef OPENAL_RUNTIME_LINKING
{
int idx;
const char * possiblelibnames[] = {
NULL, /* is set below */
"openal", "openal32", "libopenal.so", "libopenal.dylib",
NULL
};
possiblelibnames[0] = coin_getenv("COIN_OPENAL_LIBNAME");
idx = possiblelibnames[0] ? 0 : 1;
while (!openal_libhandle && possiblelibnames[idx]) {
openal_libhandle = cc_dl_open(possiblelibnames[idx]);
idx++;
}
if (!openal_libhandle) {
oal->available = 0;
openal_failed_to_load = 1;
}
oal->runtime = 1;
}
/* Define OPENALWRAPPER_REGISTER_FUNC macro. Casting the type is
necessary for this file to be compatible with C++ compilers. */
#define OPENALWRAPPER_REGISTER_FUNC(_funcname_, _funcsig_) \
oal->_funcname_ = (_funcsig_)cc_dl_sym(openal_libhandle, SO__QUOTE(_funcname_))
#elif defined(OPENALWRAPPER_ASSUME_OPENAL) /* !OPENAL_RUNTIME_LINKING */
oal->runtime = 0;
#define OPENALWRAPPER_REGISTER_FUNC(_funcname_, _funcsig_) \
oal->_funcname_ = (_funcsig_)_funcname_
#else /* !OPENALWRAPPER_ASSUME_OPENAL */
oal->available = 0;
oal->runtime = 0;
#define OPENALWRAPPER_REGISTER_FUNC(_funcname_, _funcsig_) \
oal->_funcname_ = NULL
#endif /* !OPENALWRAPPER_ASSUME_OPENAL */
OPENALWRAPPER_REGISTER_FUNC(alGetString, alGetString_t);
if (oal->available && !oal->alGetString) {
/* something is seriously wrong */
cc_debugerror_post("openal_wrapper",
"Loaded OpenAL DLL ok, but couldn't resolve symbol "
"alGetString().");
oal->available = 0;
openal_failed_to_load = 1;
}
else {
OPENALWRAPPER_REGISTER_FUNC(alGetString, alGetString_t);
OPENALWRAPPER_REGISTER_FUNC(alGetError, alGetError_t);
OPENALWRAPPER_REGISTER_FUNC(alListenerfv, alListenerfv_t);
OPENALWRAPPER_REGISTER_FUNC(alListenerf, alListenerf_t);
OPENALWRAPPER_REGISTER_FUNC(alDistanceModel, alDistanceModel_t);
OPENALWRAPPER_REGISTER_FUNC(alcCreateContext, alcCreateContext_t);
OPENALWRAPPER_REGISTER_FUNC(alcMakeContextCurrent, alcMakeContextCurrent_t);
OPENALWRAPPER_REGISTER_FUNC(alcProcessContext, alcProcessContext_t);
OPENALWRAPPER_REGISTER_FUNC(alcSuspendContext, alcSuspendContext_t);
OPENALWRAPPER_REGISTER_FUNC(alcDestroyContext, alcDestroyContext_t);
OPENALWRAPPER_REGISTER_FUNC(alcOpenDevice, alcOpenDevice_t);
OPENALWRAPPER_REGISTER_FUNC(alcCloseDevice, alcCloseDevice_t);
OPENALWRAPPER_REGISTER_FUNC(alGenSources, alGenSources_t);
OPENALWRAPPER_REGISTER_FUNC(alDeleteSources, alDeleteSources_t);
OPENALWRAPPER_REGISTER_FUNC(alSourcePlay, alSourcePlay_t);
OPENALWRAPPER_REGISTER_FUNC(alSourceStop, alSourceStop_t);
OPENALWRAPPER_REGISTER_FUNC(alSourceRewind, alSourceRewind_t);
OPENALWRAPPER_REGISTER_FUNC(alSourcefv, alSourcefv_t);
OPENALWRAPPER_REGISTER_FUNC(alSourcef, alSourcef_t);
OPENALWRAPPER_REGISTER_FUNC(alSourcei, alSourcei_t);
OPENALWRAPPER_REGISTER_FUNC(alGetSourcei, alGetSourcei_t);
OPENALWRAPPER_REGISTER_FUNC(alSourceQueueBuffers, alSourceQueueBuffers_t);
OPENALWRAPPER_REGISTER_FUNC(alSourceUnqueueBuffers, alSourceUnqueueBuffers_t);
OPENALWRAPPER_REGISTER_FUNC(alBufferData, alBufferData_t);
OPENALWRAPPER_REGISTER_FUNC(alGenBuffers, alGenBuffers_t);
OPENALWRAPPER_REGISTER_FUNC(alDeleteBuffers, alDeleteBuffers_t);
}
if (oal->available) { /* debugging */
const unsigned char * str;
const char * debug = coin_getenv("COIN_DEBUG_AUDIO");
if (debug && atoi(debug)) {
cc_debugerror_postinfo("openal_wrapper", "OpenAL using %s linking.",
oal->runtime ? "run-time" : "build-time");
str = oal->alGetString(AL_VENDOR);
cc_debugerror_postinfo("openal_wrapper", "AL_VENDOR=='%s'", str);
str = oal->alGetString(AL_VERSION);
cc_debugerror_postinfo("openal_wrapper", "AL_VERSION=='%s'", str);
str = oal->alGetString(AL_RENDERER);
cc_debugerror_postinfo("openal_wrapper", "AL_RENDERER=='%s'", str);
str = oal->alGetString(AL_EXTENSIONS);
cc_debugerror_postinfo("openal_wrapper", "AL_EXTENSIONS=='%s'", str);
}
}
/* Do this late, so we can detect recursive calls to this function. */
openal_instance = oal;
}
CC_SYNC_END(openal_wrapper);
return openal_instance;
}
|