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
|
#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2009 the Open Toolkit library.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do
// so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#endregion
using System;
using System.Diagnostics;
using System.Threading;
using System.IO;
using OpenTK.Audio;
using OpenTK.Audio.OpenAL;
namespace Examples
{
[Example("EFX: Reverb", ExampleCategory.OpenAL, "EFX", Documentation="EFXReverb")]
public class ReverbExample
{
static readonly string filename = Path.Combine(Path.Combine("Data", "Audio"), "the_ring_that_fell.wav");
public static void Main()
{
using (AudioContext context = new AudioContext())
{
Trace.WriteLine("Testing WaveReader({0}).ReadToEnd()", filename);
EffectsExtension efx = new EffectsExtension();
int buffer = AL.GenBuffer();
int source = AL.GenSource();
int state;
int effect = efx.GenEffect();
int slot = efx.GenAuxiliaryEffectSlot();
efx.BindEffect(effect, EfxEffectType.Reverb);
efx.Effect(effect, EfxEffectf.ReverbDecayTime, 3.0f);
efx.Effect(effect, EfxEffectf.ReverbDecayHFRatio, 0.91f);
efx.Effect(effect, EfxEffectf.ReverbDensity, 0.7f);
efx.Effect(effect, EfxEffectf.ReverbDiffusion, 0.9f);
efx.Effect(effect, EfxEffectf.ReverbRoomRolloffFactor, 3.1f);
efx.Effect(effect, EfxEffectf.ReverbReflectionsGain, 0.723f);
efx.Effect(effect, EfxEffectf.ReverbReflectionsDelay, 0.03f);
efx.Effect(effect, EfxEffectf.ReverbGain, 0.23f);
efx.AuxiliaryEffectSlot(slot, EfxAuxiliaryi.EffectslotEffect, effect);
int channels, bits, rate;
byte[] data = Playback.LoadWave(File.Open(filename, FileMode.Open), out channels, out bits, out rate);
AL.BufferData(buffer, Playback.GetSoundFormat(channels, bits), data, data.Length, rate);
AL.Source(source, ALSourcef.ConeOuterGain, 1.0f);
AL.Source(source, ALSourcei.Buffer, buffer);
AL.SourcePlay(source);
Trace.Write("Playing");
// Query the source to find out when it stops playing.
do
{
Thread.Sleep(250);
Trace.Write(".");
AL.GetSource(source, ALGetSourcei.SourceState, out state);
}
while ((ALSourceState)state == ALSourceState.Playing);
Trace.WriteLine("");
AL.SourceStop(source);
AL.DeleteSource(source);
AL.DeleteBuffer(buffer);
efx.DeleteEffect(effect);
efx.DeleteAuxiliaryEffectSlot(slot);
}
}
}
}
|
