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Audio: Implement PCM24 output (#4321)

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merry 2023-01-20 20:46:13 +00:00 committed by GitHub
parent eb2cc159fa
commit 009e6bcd1b
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 33 additions and 14 deletions
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7
Ryujinx.Audio/Backends/CompatLayer/CompatLayerHardwareDeviceDriver.cs
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@ -75,9 +75,12 @@ namespace Ryujinx.Audio.Backends.CompatLayer
return SampleFormat.PcmFloat;
}
// TODO: Implement PCM24 conversion.
if (_realDriver.SupportsSampleFormat(SampleFormat.PcmInt24))
{
return SampleFormat.PcmInt24;
}
// If nothing is truly supported, attempt PCM8 at the cost of loosing quality.
// If nothing is truly supported, attempt PCM8 at the cost of losing quality.
if (_realDriver.SupportsSampleFormat(SampleFormat.PcmInt8))
{
return SampleFormat.PcmInt8;

7
Ryujinx.Audio/Backends/CompatLayer/CompatLayerHardwareDeviceSession.cs
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@ -58,10 +58,13 @@ namespace Ryujinx.Audio.Backends.CompatLayer
switch (realSampleFormat)
{
case SampleFormat.PcmInt8:
PcmHelper.Convert(MemoryMarshal.Cast<byte, sbyte>(convertedSamples), samples);
PcmHelper.ConvertSampleToPcm8(MemoryMarshal.Cast<byte, sbyte>(convertedSamples), samples);
break;
case SampleFormat.PcmInt24:
PcmHelper.ConvertSampleToPcm24(convertedSamples, samples);
break;
case SampleFormat.PcmInt32:
PcmHelper.Convert(MemoryMarshal.Cast<byte, int>(convertedSamples), samples);
PcmHelper.ConvertSampleToPcm32(MemoryMarshal.Cast<byte, int>(convertedSamples), samples);
break;
case SampleFormat.PcmFloat:
PcmHelper.ConvertSampleToPcmFloat(MemoryMarshal.Cast<byte, float>(convertedSamples), samples);

33
Ryujinx.Audio/Renderer/Dsp/PcmHelper.cs
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@ -37,19 +37,32 @@ namespace Ryujinx.Audio.Renderer.Dsp
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static TOutput ConvertSample<TInput, TOutput>(TInput value) where TInput: INumber<TInput>, IMinMaxValue<TInput> where TOutput : INumber<TOutput>, IMinMaxValue<TOutput>
{
TInput conversionRate = TInput.CreateSaturating(TOutput.MaxValue / TOutput.CreateSaturating(TInput.MaxValue));
return TOutput.CreateSaturating(value * conversionRate);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static void Convert<TInput, TOutput>(Span<TOutput> output, ReadOnlySpan<TInput> input) where TInput : INumber<TInput>, IMinMaxValue<TInput> where TOutput : INumber<TOutput>, IMinMaxValue<TOutput>
public static void ConvertSampleToPcm8(Span<sbyte> output, ReadOnlySpan<short> input)
{
for (int i = 0; i < input.Length; i++)
{
output[i] = ConvertSample<TInput, TOutput>(input[i]);
// Output most significant byte
output[i] = (sbyte)(input[i] >> 8);
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static void ConvertSampleToPcm24(Span<byte> output, ReadOnlySpan<short> input)
{
for (int i = 0; i < input.Length; i++)
{
output[i * 3 + 2] = (byte)(input[i] >> 8);
output[i * 3 + 1] = (byte)(input[i] & 0xff);
output[i * 3 + 0] = 0;
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static void ConvertSampleToPcm32(Span<int> output, ReadOnlySpan<short> input)
{
for (int i = 0; i < input.Length; i++)
{
output[i] = ((int)input[i]) << 16;
}
}