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
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
|
using Ryujinx.Audio.Renderer.Common;
using Ryujinx.Audio.Renderer.Dsp.Effect;
using Ryujinx.Audio.Renderer.Parameter.Effect;
using System;
namespace Ryujinx.Audio.Renderer.Dsp.State
{
public struct ReverbState
{
private static readonly float[] _fdnDelayTimes = new float[20]
{
// Room
53.953247f, 79.192566f, 116.238770f, 130.615295f,
// Hall
53.953247f, 79.192566f, 116.238770f, 170.615295f,
// Plate
5f, 10f, 5f, 10f,
// Cathedral
47.03f, 71f, 103f, 170f,
// Max delay (Hall is the one with the highest values so identical to Hall)
53.953247f, 79.192566f, 116.238770f, 170.615295f,
};
private static readonly float[] _decayDelayTimes = new float[20]
{
// Room
7f, 9f, 13f, 17f,
// Hall
7f, 9f, 13f, 17f,
// Plate (no decay)
1f, 1f, 1f, 1f,
// Cathedral
7f, 7f, 13f, 9f,
// Max delay (Hall is the one with the highest values so identical to Hall)
7f, 9f, 13f, 17f,
};
private static readonly float[] _earlyDelayTimes = new float[50]
{
// Room
0.0f, 3.5f, 2.8f, 3.9f, 2.7f, 13.4f, 7.9f, 8.4f, 9.9f, 12.0f,
// Chamber
0.0f, 11.8f, 5.5f, 11.2f, 10.4f, 38.1f, 22.2f, 29.6f, 21.2f, 24.8f,
// Hall
0.0f, 41.5f, 20.5f, 41.3f, 0.0f, 29.5f, 33.8f, 45.2f, 46.8f, 0.0f,
// Cathedral
33.1f, 43.3f, 22.8f, 37.9f, 14.9f, 35.3f, 17.9f, 34.2f, 0.0f, 43.3f,
// Disabled
0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f,
};
private static readonly float[] _earlyGainBase = new float[50]
{
// Room
0.70f, 0.68f, 0.70f, 0.68f, 0.70f, 0.68f, 0.70f, 0.68f, 0.68f, 0.68f,
// Chamber
0.70f, 0.68f, 0.70f, 0.68f, 0.70f, 0.68f, 0.68f, 0.68f, 0.68f, 0.68f,
// Hall
0.50f, 0.70f, 0.70f, 0.68f, 0.50f, 0.68f, 0.68f, 0.70f, 0.68f, 0.00f,
// Cathedral
0.93f, 0.92f, 0.87f, 0.86f, 0.94f, 0.81f, 0.80f, 0.77f, 0.76f, 0.65f,
// Disabled
0.00f, 0.00f, 0.00f, 0.00f, 0.00f, 0.00f, 0.00f, 0.00f, 0.00f, 0.00f,
};
private static readonly float[] _preDelayTimes = new float[5]
{
// Room
12.5f,
// Chamber
40.0f,
// Hall
50.0f,
// Cathedral
50.0f,
// Disabled
0.0f,
};
public DelayLine[] FdnDelayLines { get; }
public DecayDelay[] DecayDelays { get; }
public DelayLine PreDelayLine { get; }
public DelayLine FrontCenterDelayLine { get; }
public uint[] EarlyDelayTime { get; }
public float[] EarlyGain { get; }
public uint PreDelayLineDelayTime { get; private set; }
public float[] HighFrequencyDecayDirectGain { get; }
public float[] HighFrequencyDecayPreviousGain { get; }
public float[] PreviousFeedbackOutput { get; }
public const int EarlyModeCount = 10;
private const int FixedPointPrecision = 14;
private static ReadOnlySpan<float> GetFdnDelayTimesByLateMode(ReverbLateMode lateMode)
{
return _fdnDelayTimes.AsSpan((int)lateMode * 4, 4);
}
private static ReadOnlySpan<float> GetDecayDelayTimesByLateMode(ReverbLateMode lateMode)
{
return _decayDelayTimes.AsSpan((int)lateMode * 4, 4);
}
public ReverbState(ref ReverbParameter parameter, ulong workBuffer, bool isLongSizePreDelaySupported)
{
FdnDelayLines = new DelayLine[4];
DecayDelays = new DecayDelay[4];
EarlyDelayTime = new uint[EarlyModeCount];
EarlyGain = new float[EarlyModeCount];
HighFrequencyDecayDirectGain = new float[4];
HighFrequencyDecayPreviousGain = new float[4];
PreviousFeedbackOutput = new float[4];
ReadOnlySpan<float> fdnDelayTimes = GetFdnDelayTimesByLateMode(ReverbLateMode.Limit);
ReadOnlySpan<float> decayDelayTimes = GetDecayDelayTimesByLateMode(ReverbLateMode.Limit);
uint sampleRate = (uint)FixedPointHelper.ToFloat((uint)parameter.SampleRate, FixedPointPrecision);
for (int i = 0; i < 4; i++)
{
FdnDelayLines[i] = new DelayLine(sampleRate, fdnDelayTimes[i]);
DecayDelays[i] = new DecayDelay(new DelayLine(sampleRate, decayDelayTimes[i]));
}
float preDelayTimeMax = 150.0f;
if (isLongSizePreDelaySupported)
{
preDelayTimeMax = 350.0f;
}
PreDelayLine = new DelayLine(sampleRate, preDelayTimeMax);
FrontCenterDelayLine = new DelayLine(sampleRate, 5.0f);
UpdateParameter(ref parameter);
}
public void UpdateParameter(ref ReverbParameter parameter)
{
uint sampleRate = (uint)FixedPointHelper.ToFloat((uint)parameter.SampleRate, FixedPointPrecision);
float preDelayTimeInMilliseconds = FixedPointHelper.ToFloat(parameter.PreDelayTime, FixedPointPrecision);
float earlyGain = FixedPointHelper.ToFloat(parameter.EarlyGain, FixedPointPrecision);
float coloration = FixedPointHelper.ToFloat(parameter.Coloration, FixedPointPrecision);
float decayTime = FixedPointHelper.ToFloat(parameter.DecayTime, FixedPointPrecision);
for (int i = 0; i < 10; i++)
{
EarlyDelayTime[i] = Math.Min(IDelayLine.GetSampleCount(sampleRate, _earlyDelayTimes[i] + preDelayTimeInMilliseconds), PreDelayLine.SampleCountMax) + 1;
EarlyGain[i] = _earlyGainBase[i] * earlyGain;
}
if (parameter.ChannelCount == 2)
{
EarlyGain[4] = EarlyGain[4] * 0.5f;
EarlyGain[5] = EarlyGain[5] * 0.5f;
}
PreDelayLineDelayTime = Math.Min(IDelayLine.GetSampleCount(sampleRate, _preDelayTimes[(int)parameter.EarlyMode] + preDelayTimeInMilliseconds), PreDelayLine.SampleCountMax);
ReadOnlySpan<float> fdnDelayTimes = GetFdnDelayTimesByLateMode(parameter.LateMode);
ReadOnlySpan<float> decayDelayTimes = GetDecayDelayTimesByLateMode(parameter.LateMode);
float highFrequencyDecayRatio = FixedPointHelper.ToFloat(parameter.HighFrequencyDecayRatio, FixedPointPrecision);
float highFrequencyUnknownValue = FloatingPointHelper.Cos(1280.0f / sampleRate);
for (int i = 0; i < 4; i++)
{
FdnDelayLines[i].SetDelay(fdnDelayTimes[i]);
DecayDelays[i].SetDelay(decayDelayTimes[i]);
float tempA = -3 * (DecayDelays[i].CurrentSampleCount + FdnDelayLines[i].CurrentSampleCount);
float tempB = tempA / (decayTime * sampleRate);
float tempC;
float tempD;
if (highFrequencyDecayRatio < 0.995f)
{
float tempE = FloatingPointHelper.Pow10((((1.0f / highFrequencyDecayRatio) - 1.0f) * 2) / 100 * (tempB / 10));
float tempF = 1.0f - tempE;
float tempG = 2.0f - (tempE * 2 * highFrequencyUnknownValue);
float tempH = MathF.Sqrt((tempG * tempG) - (tempF * tempF * 4));
tempC = (tempG - tempH) / (tempF * 2);
tempD = 1.0f - tempC;
}
else
{
// no high frequency decay ratio
tempC = 0.0f;
tempD = 1.0f;
}
HighFrequencyDecayDirectGain[i] = FloatingPointHelper.Pow10(tempB / 1000) * tempD * 0.7071f;
HighFrequencyDecayPreviousGain[i] = tempC;
PreviousFeedbackOutput[i] = 0.0f;
DecayDelays[i].SetDecayRate(0.6f * (1.0f - coloration));
}
}
}
}
|
