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
|
/**
* Copyright (c) 2010-2023 JogAmp Community. All rights reserved.
* Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* -Redistribution of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* -Redistribution in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind.
* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING
* ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
* NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS
* LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A
* RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
* IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT
* OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR
* PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
* ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS
* BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed or intended for use in the
* design, construction, operation or maintenance of any nuclear facility.
*/
package com.jogamp.openal.sound3d;
import com.jogamp.common.util.locks.LockFactory;
import com.jogamp.common.util.locks.RecursiveLock;
import com.jogamp.openal.*;
import com.jogamp.openal.util.ALHelpers;
/**
* This class provides a Sound3D Context associated with a specified device.
*
* @author Athomas Goldberg
*/
public class Context {
private final RecursiveLock lock = LockFactory.createRecursiveLock();
private Device device;
private ALCcontext alCtx;
private boolean threadContextLocked;
private boolean hasALC_thread_local_context;
public Context(final ALCcontext realContext, final Device device) {
this.device = device;
this.alCtx = realContext;
{
hasALC_thread_local_context = false;
final boolean v;
if( makeCurrent() ) {
v = AudioSystem3D.alc.alcIsExtensionPresent(null, ALHelpers.ALC_EXT_thread_local_context) ||
AudioSystem3D.alc.alcIsExtensionPresent(device.getALDevice(), ALHelpers.ALC_EXT_thread_local_context);
release();
} else {
v = false;
}
hasALC_thread_local_context = v;
}
}
/**
* Creates a new Context for a specified device.
*
* @param device The device the Context is being created for.
*/
public Context(final Device device) {
this(AudioSystem3D.alc.alcCreateContext(device.getALDevice(), null), device);
}
/**
* Returns the OpenAL context.
*/
public ALCcontext getALContext() {
return alCtx;
}
/** Returns whether {@link #getALContext()} is valid, i.e. not null, e.g. not {@link #destroy()}'ed. */
public boolean isValid() { return null != alCtx; }
public int getALCError() {
return AudioSystem3D.alc.alcGetError(device.getALDevice());
}
/**
* destroys this context freeing its resources.
*/
public void destroy() {
lock.lock();
try {
if( null != alCtx ) {
if( threadContextLocked ) {
AudioSystem3D.alExt.alcSetThreadContext(null);
} else {
AudioSystem3D.alc.alcMakeContextCurrent(null);
}
AudioSystem3D.alc.alcDestroyContext(alCtx);
alCtx = null;
}
device = null;
// unroll lock !
while(lock.getHoldCount() > 1) {
lock.unlock();
}
} finally {
lock.unlock();
}
}
/**
* Makes this context current.
*/
public boolean makeCurrent() {
final boolean r;
lock.lock();
if( hasALC_thread_local_context ) {
threadContextLocked = true;
r = AudioSystem3D.alExt.alcSetThreadContext(alCtx);
} else {
threadContextLocked = false;
r = AudioSystem3D.alc.alcMakeContextCurrent(alCtx);
}
if( !r ) {
lock.unlock();
}
return r;
}
/**
* Release this context.
*/
public boolean release() {
final boolean r;
if( threadContextLocked ) {
r = AudioSystem3D.alExt.alcSetThreadContext(null);
} else {
r = AudioSystem3D.alc.alcMakeContextCurrent(null);
}
lock.unlock();
return r;
}
/**
* Suspend this context
*/
public void suspend() {
AudioSystem3D.alc.alcSuspendContext(alCtx);
}
/**
* Gets the device associated with this context.
*
* @return the device associated with this context.
*/
public Device getDevice() {
return device;
}
}
|
