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
|
using Ryujinx.Audio.Renderer.Dsp.State;
using Ryujinx.Audio.Renderer.Parameter;
using Ryujinx.Audio.Renderer.Parameter.Effect;
using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
namespace Ryujinx.Audio.Renderer.Dsp.Command
{
public class LimiterCommandVersion2 : ICommand
{
public bool Enabled { get; set; }
public int NodeId { get; }
public CommandType CommandType => CommandType.LimiterVersion2;
public uint EstimatedProcessingTime { get; set; }
public LimiterParameter Parameter => _parameter;
public Memory<LimiterState> State { get; }
public Memory<EffectResultState> ResultState { get; }
public ulong WorkBuffer { get; }
public ushort[] OutputBufferIndices { get; }
public ushort[] InputBufferIndices { get; }
public bool IsEffectEnabled { get; }
private LimiterParameter _parameter;
public LimiterCommandVersion2(uint bufferOffset, LimiterParameter parameter, Memory<LimiterState> state, Memory<EffectResultState> resultState, bool isEnabled, ulong workBuffer, int nodeId)
{
Enabled = true;
NodeId = nodeId;
_parameter = parameter;
State = state;
ResultState = resultState;
WorkBuffer = workBuffer;
IsEffectEnabled = isEnabled;
InputBufferIndices = new ushort[Constants.VoiceChannelCountMax];
OutputBufferIndices = new ushort[Constants.VoiceChannelCountMax];
for (int i = 0; i < Parameter.ChannelCount; i++)
{
InputBufferIndices[i] = (ushort)(bufferOffset + Parameter.Input[i]);
OutputBufferIndices[i] = (ushort)(bufferOffset + Parameter.Output[i]);
}
}
public void Process(CommandList context)
{
ref LimiterState state = ref State.Span[0];
if (IsEffectEnabled)
{
if (Parameter.Status == Server.Effect.UsageState.Invalid)
{
state = new LimiterState(ref _parameter, WorkBuffer);
}
else if (Parameter.Status == Server.Effect.UsageState.New)
{
state.UpdateParameter(ref _parameter);
}
}
ProcessLimiter(context, ref state);
}
private unsafe void ProcessLimiter(CommandList context, ref LimiterState state)
{
Debug.Assert(Parameter.IsChannelCountValid());
if (IsEffectEnabled && Parameter.IsChannelCountValid())
{
if (!ResultState.IsEmpty && Parameter.StatisticsReset)
{
ref LimiterStatistics statistics = ref MemoryMarshal.Cast<byte, LimiterStatistics>(ResultState.Span[0].SpecificData)[0];
statistics.Reset();
}
Span<IntPtr> inputBuffers = stackalloc IntPtr[Parameter.ChannelCount];
Span<IntPtr> outputBuffers = stackalloc IntPtr[Parameter.ChannelCount];
for (int i = 0; i < Parameter.ChannelCount; i++)
{
inputBuffers[i] = context.GetBufferPointer(InputBufferIndices[i]);
outputBuffers[i] = context.GetBufferPointer(OutputBufferIndices[i]);
}
for (int channelIndex = 0; channelIndex < Parameter.ChannelCount; channelIndex++)
{
for (int sampleIndex = 0; sampleIndex < context.SampleCount; sampleIndex++)
{
float rawInputSample = *((float*)inputBuffers[channelIndex] + sampleIndex);
float inputSample = (rawInputSample / short.MaxValue) * Parameter.InputGain;
float sampleInputMax = Math.Abs(inputSample);
float inputCoefficient = Parameter.ReleaseCoefficient;
if (sampleInputMax > state.DetectorAverage[channelIndex].Read())
{
inputCoefficient = Parameter.AttackCoefficient;
}
float detectorValue = state.DetectorAverage[channelIndex].Update(sampleInputMax, inputCoefficient);
float attenuation = 1.0f;
if (detectorValue > Parameter.Threshold)
{
attenuation = Parameter.Threshold / detectorValue;
}
float outputCoefficient = Parameter.ReleaseCoefficient;
if (state.CompressionGainAverage[channelIndex].Read() > attenuation)
{
outputCoefficient = Parameter.AttackCoefficient;
}
float compressionGain = state.CompressionGainAverage[channelIndex].Update(attenuation, outputCoefficient);
ref float delayedSample = ref state.DelayedSampleBuffer[channelIndex * Parameter.DelayBufferSampleCountMax + state.DelayedSampleBufferPosition[channelIndex]];
float outputSample = delayedSample * compressionGain * Parameter.OutputGain;
*((float*)outputBuffers[channelIndex] + sampleIndex) = outputSample * short.MaxValue;
delayedSample = inputSample;
state.DelayedSampleBufferPosition[channelIndex]++;
while (state.DelayedSampleBufferPosition[channelIndex] >= Parameter.DelayBufferSampleCountMin)
{
state.DelayedSampleBufferPosition[channelIndex] -= Parameter.DelayBufferSampleCountMin;
}
if (!ResultState.IsEmpty)
{
ref LimiterStatistics statistics = ref MemoryMarshal.Cast<byte, LimiterStatistics>(ResultState.Span[0].SpecificData)[0];
statistics.InputMax[channelIndex] = Math.Max(statistics.InputMax[channelIndex], sampleInputMax);
statistics.CompressionGainMin[channelIndex] = Math.Min(statistics.CompressionGainMin[channelIndex], compressionGain);
}
}
}
}
else
{
for (int i = 0; i < Parameter.ChannelCount; i++)
{
if (InputBufferIndices[i] != OutputBufferIndices[i])
{
context.CopyBuffer(OutputBufferIndices[i], InputBufferIndices[i]);
}
}
}
}
}
}
|
