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
|
using OpenTK.Audio.OpenAL;
using Ryujinx.Audio.Common;
using Ryujinx.Audio.Integration;
using Ryujinx.Memory;
using System;
using System.Collections.Concurrent;
using System.Linq;
using System.Threading;
using static Ryujinx.Audio.Integration.IHardwareDeviceDriver;
namespace Ryujinx.Audio.Backends.OpenAL
{
public class OpenALHardwareDeviceDriver : IHardwareDeviceDriver
{
private readonly ALDevice _device;
private readonly ALContext _context;
private readonly ManualResetEvent _updateRequiredEvent;
private readonly ManualResetEvent _pauseEvent;
private readonly ConcurrentDictionary<OpenALHardwareDeviceSession, byte> _sessions;
private bool _stillRunning;
private readonly Thread _updaterThread;
private float _volume;
public float Volume
{
get
{
return _volume;
}
set
{
_volume = value;
foreach (OpenALHardwareDeviceSession session in _sessions.Keys)
{
session.UpdateMasterVolume(value);
}
}
}
public OpenALHardwareDeviceDriver()
{
_device = ALC.OpenDevice("");
_context = ALC.CreateContext(_device, new ALContextAttributes());
_updateRequiredEvent = new ManualResetEvent(false);
_pauseEvent = new ManualResetEvent(true);
_sessions = new ConcurrentDictionary<OpenALHardwareDeviceSession, byte>();
_stillRunning = true;
_updaterThread = new Thread(Update)
{
Name = "HardwareDeviceDriver.OpenAL",
};
_volume = 1f;
_updaterThread.Start();
}
public static bool IsSupported
{
get
{
try
{
return ALC.GetStringList(GetEnumerationStringList.DeviceSpecifier).Any();
}
catch
{
return false;
}
}
}
public IHardwareDeviceSession OpenDeviceSession(Direction direction, IVirtualMemoryManager memoryManager, SampleFormat sampleFormat, uint sampleRate, uint channelCount)
{
if (channelCount == 0)
{
channelCount = 2;
}
if (sampleRate == 0)
{
sampleRate = Constants.TargetSampleRate;
}
if (direction != Direction.Output)
{
throw new ArgumentException($"{direction}");
}
else if (!SupportsChannelCount(channelCount))
{
throw new ArgumentException($"{channelCount}");
}
OpenALHardwareDeviceSession session = new(this, memoryManager, sampleFormat, sampleRate, channelCount);
_sessions.TryAdd(session, 0);
return session;
}
internal bool Unregister(OpenALHardwareDeviceSession session)
{
return _sessions.TryRemove(session, out _);
}
public ManualResetEvent GetUpdateRequiredEvent()
{
return _updateRequiredEvent;
}
public ManualResetEvent GetPauseEvent()
{
return _pauseEvent;
}
private void Update()
{
ALC.MakeContextCurrent(_context);
while (_stillRunning)
{
bool updateRequired = false;
foreach (OpenALHardwareDeviceSession session in _sessions.Keys)
{
if (session.Update())
{
updateRequired = true;
}
}
if (updateRequired)
{
_updateRequiredEvent.Set();
}
// If it's not slept it will waste cycles.
Thread.Sleep(10);
}
}
public void Dispose()
{
GC.SuppressFinalize(this);
Dispose(true);
}
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
_stillRunning = false;
foreach (OpenALHardwareDeviceSession session in _sessions.Keys)
{
session.Dispose();
}
ALC.DestroyContext(_context);
ALC.CloseDevice(_device);
_pauseEvent.Dispose();
}
}
public bool SupportsSampleRate(uint sampleRate)
{
return true;
}
public bool SupportsSampleFormat(SampleFormat sampleFormat)
{
return true;
}
public bool SupportsChannelCount(uint channelCount)
{
return channelCount == 1 || channelCount == 2 || channelCount == 6;
}
public bool SupportsDirection(Direction direction)
{
return direction == Direction.Output;
}
}
}
|
