blob: d218b91fc4ff3d50d0d896c362d95b7b75bd0827 (
plain)
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
|
////////////////////////////////////////////////////////////
//
// SFML - Simple and Fast Multimedia Library
// Copyright (C) 2007-2013 Laurent Gomila (laurent.gom@gmail.com)
//
// This software is provided 'as-is', without any express or implied warranty.
// In no event will the authors be held liable for any damages arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it freely,
// subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented;
// you must not claim that you wrote the original software.
// If you use this software in a product, an acknowledgment
// in the product documentation would be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such,
// and must not be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source distribution.
//
////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////
// Headers
////////////////////////////////////////////////////////////
#include <SFML/Audio/AudioDevice.hpp>
#include <SFML/Audio/ALCheck.hpp>
#include <SFML/Audio/Listener.hpp>
#include <SFML/System/Err.hpp>
namespace
{
ALCdevice* audioDevice = NULL;
ALCcontext* audioContext = NULL;
}
namespace sf
{
namespace priv
{
////////////////////////////////////////////////////////////
AudioDevice::AudioDevice()
{
// Create the device
audioDevice = alcOpenDevice(NULL);
if (audioDevice)
{
// Create the context
audioContext = alcCreateContext(audioDevice, NULL);
if (audioContext)
{
// Set the context as the current one (we'll only need one)
alcMakeContextCurrent(audioContext);
}
else
{
err() << "Failed to create the audio context" << std::endl;
}
}
else
{
err() << "Failed to open the audio device" << std::endl;
}
}
////////////////////////////////////////////////////////////
AudioDevice::~AudioDevice()
{
// Destroy the context
alcMakeContextCurrent(NULL);
if (audioContext)
alcDestroyContext(audioContext);
// Destroy the device
if (audioDevice)
alcCloseDevice(audioDevice);
}
////////////////////////////////////////////////////////////
bool AudioDevice::isExtensionSupported(const std::string& extension)
{
ensureALInit();
if ((extension.length() > 2) && (extension.substr(0, 3) == "ALC"))
return alcIsExtensionPresent(audioDevice, extension.c_str()) != AL_FALSE;
else
return alIsExtensionPresent(extension.c_str()) != AL_FALSE;
}
////////////////////////////////////////////////////////////
int AudioDevice::getFormatFromChannelCount(unsigned int channelCount)
{
ensureALInit();
// Find the good format according to the number of channels
int format = 0;
switch (channelCount)
{
case 1 : format = AL_FORMAT_MONO16; break;
case 2 : format = AL_FORMAT_STEREO16; break;
case 4 : format = alGetEnumValue("AL_FORMAT_QUAD16"); break;
case 6 : format = alGetEnumValue("AL_FORMAT_51CHN16"); break;
case 7 : format = alGetEnumValue("AL_FORMAT_61CHN16"); break;
case 8 : format = alGetEnumValue("AL_FORMAT_71CHN16"); break;
default : format = 0; break;
}
// Fixes a bug on OS X
if (format == -1)
format = 0;
return format;
}
} // namespace priv
} // namespace sf
|
