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Audren: Implement polyphase upsampler (#4256)

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* Audren: Implement polyphase upsampler

* prefer shifting to modulo

* prefer MathF

* fix nits

* rm ResampleForUpsampler

* oop

* Array20

* nits
This commit is contained in:
merry 2023-01-15 04:20:49 +00:00 • committed by GitHub
parent 8071c8c8c0
commit 41bba5310a
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GPG key ID: 4AEE18F83AFDEB23
5 changed files with 201 additions and 52 deletions
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12
Ryujinx.Audio/Renderer/Dsp/Command/UpsampleCommand.cs
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@ -40,6 +40,12 @@ namespace Ryujinx.Audio.Renderer.Dsp.Command
info.InputBufferIndices[i] = (ushort)(bufferOffset + inputBufferOffset[i]);
}
if (info.BufferStates?.Length != (int)inputCount)
{
// Keep state if possible.
info.BufferStates = new UpsamplerBufferState[(int)inputCount];
}
UpsamplerInfo = info;
}
@ -50,8 +56,6 @@ namespace Ryujinx.Audio.Renderer.Dsp.Command
public void Process(CommandList context)
{
float ratio = (float)InputSampleRate / Constants.TargetSampleRate;
uint bufferCount = Math.Min(BufferCount, UpsamplerInfo.SourceSampleCount);
for (int i = 0; i < bufferCount; i++)
@ -59,9 +63,7 @@ namespace Ryujinx.Audio.Renderer.Dsp.Command
Span<float> inputBuffer = context.GetBuffer(UpsamplerInfo.InputBufferIndices[i]);
Span<float> outputBuffer = GetBuffer(UpsamplerInfo.InputBufferIndices[i], (int)UpsamplerInfo.SampleCount);
float fraction = 0.0f;
ResamplerHelper.ResampleForUpsampler(outputBuffer, inputBuffer, ratio, ref fraction, (int)(InputSampleCount / ratio));
UpsamplerHelper.Upsample(outputBuffer, inputBuffer, (int)UpsamplerInfo.SampleCount, (int)InputSampleCount, ref UpsamplerInfo.BufferStates[i]);
}
}
}