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
|
/*
audio/audio.cc
This file is part of the Osirion project and is distributed under
the terms of the GNU General Public License version 2
*/
#include "audio/audio.h"
#include "audio/buffers.h"
#include "audio/pcm.h"
#include "audio/sources.h"
#include "sys/sys.h"
namespace audio
{
ALCdevice *audio_device = 0;
ALCcontext *audio_context = 0;
void init()
{
con_print << "^BInitializing audio...";
// open the default audio device
audio_device = alcOpenDevice(0);
if (!audio_device) {
con_warn << "Could not initialize audio!";
return;
}
// create the audio context
audio_context = alcCreateContext(audio_device ,0);
alcMakeContextCurrent(audio_context);
// clear errors
alGetError();
Buffers::init();
Sources::init();
//con_debug << " audio device ^B" << alcGetString(audio_device, ALC_DEFAULT_DEVICE_SPECIFIER) << std::endl;
// the "no sound" sound
load("ui/nosnd");
// console sound
load("ui/console");
}
void load (const char *name)
{
Buffers::load(std::string(name));
}
void shutdown()
{
con_print << "^BShutting down audio...";
Sources::shutdown();
Buffers::shutdown();
if (audio_context) {
alcMakeContextCurrent(0);
alcDestroyContext(audio_context);
audio_context = 0;
}
if (audio_device) {
alcCloseDevice(audio_device);
audio_device = 0;
}
}
void play(const char *name)
{
if (!audio_context)
return;
size_t buffer = Buffers::load(std::string(name));
for (size_t i = 0; i < MAXUISOURCES; i++) {
ALint srcstate = 0;
ALuint source = Sources::source(i);
alGetSourcei(source , AL_SOURCE_STATE , &srcstate);
if (srcstate != AL_PLAYING) {
Buffers::bind(source, buffer);
alSourcef(source, AL_PITCH, 1.0);
alSourcef(source, AL_GAIN, 1.0);
alSourcei(source, AL_SOURCE_RELATIVE, AL_TRUE);
ALfloat location[] = {0.0f, 0.0f, 0.0f};
alSourcefv(source, AL_POSITION, location);
alSourceRewind(source);
alSourcePlay(source);
return;
}
}
}
void update_source(size_t source_index, math::Vector3f const & location, math::Vector3f const & velocity, float pitch, float gain)
{
ALuint source = Sources::source(source_index);
alSourcefv(source, AL_POSITION, location.ptr());
//alSourcefv(source, AL_VELOCITY, velocity.ptr());
alSourcef(source, AL_PITCH, pitch);
alSourcef(source, AL_GAIN, gain);
}
void loop( size_t source_index, const char *name, float pitch, float gain)
{
if (!audio_context)
return;
ALuint source = Sources::source(source_index);
Buffers::bind(source, Buffers::load(std::string(name)));
alSourcef(source, AL_REFERENCE_DISTANCE, 2.0f);
alSourcei(source, AL_SOURCE_RELATIVE, AL_FALSE);
alSourcef(source, AL_PITCH, pitch);
alSourcef(source, AL_GAIN, gain);
alSourcei(source, AL_LOOPING, AL_TRUE);
alSourceRewind(source);
alSourcePlay(source);
}
void update_listener(math::Vector3f const &location, math::Axis const &axis, math::Vector3f const & velocity)
{
alListenerfv(AL_POSITION, location.ptr());
ALfloat orientation[6];
for (size_t i =0; i <3; i++) {
orientation[i] = axis.forward()[i];
orientation[i+3] = axis.up()[i];
}
alListenerfv(AL_ORIENTATION, orientation);
//alListenerfv(AL_VELOCITY, velocity.ptr());
}
}
|
