mirror of
https://github.com/Ryujinx/Ryujinx.git
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186 lines
6.6 KiB
C#
186 lines
6.6 KiB
C#
using Ryujinx.Audio.Backends.Common;
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using Ryujinx.Audio.Backends.Dummy;
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using Ryujinx.Audio.Common;
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using Ryujinx.Audio.Integration;
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using Ryujinx.Common.Logging;
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using Ryujinx.Memory;
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using System;
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using System.Threading;
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using static Ryujinx.Audio.Integration.IHardwareDeviceDriver;
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namespace Ryujinx.Audio.Backends.CompatLayer
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{
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public class CompatLayerHardwareDeviceDriver : IHardwareDeviceDriver
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{
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private IHardwareDeviceDriver _realDriver;
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public static bool IsSupported => true;
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public CompatLayerHardwareDeviceDriver(IHardwareDeviceDriver realDevice)
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{
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_realDriver = realDevice;
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}
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public void Dispose()
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{
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_realDriver.Dispose();
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}
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public ManualResetEvent GetUpdateRequiredEvent()
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{
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return _realDriver.GetUpdateRequiredEvent();
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}
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public ManualResetEvent GetPauseEvent()
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{
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return _realDriver.GetPauseEvent();
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}
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private uint SelectHardwareChannelCount(uint targetChannelCount)
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{
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if (_realDriver.SupportsChannelCount(targetChannelCount))
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{
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return targetChannelCount;
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}
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return targetChannelCount switch
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{
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6 => SelectHardwareChannelCount(2),
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2 => SelectHardwareChannelCount(1),
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1 => throw new ArgumentException("No valid channel configuration found!"),
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_ => throw new ArgumentException($"Invalid targetChannelCount {targetChannelCount}")
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};
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}
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private SampleFormat SelectHardwareSampleFormat(SampleFormat targetSampleFormat)
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{
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if (_realDriver.SupportsSampleFormat(targetSampleFormat))
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{
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return targetSampleFormat;
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}
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// Attempt conversion from PCM16.
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if (targetSampleFormat == SampleFormat.PcmInt16)
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{
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// Prefer PCM32 if we need to convert.
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if (_realDriver.SupportsSampleFormat(SampleFormat.PcmInt32))
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{
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return SampleFormat.PcmInt32;
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}
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// If not supported, PCM float provides the best quality with a cost lower than PCM24.
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if (_realDriver.SupportsSampleFormat(SampleFormat.PcmFloat))
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{
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return SampleFormat.PcmFloat;
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}
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if (_realDriver.SupportsSampleFormat(SampleFormat.PcmInt24))
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{
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return SampleFormat.PcmInt24;
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}
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// If nothing is truly supported, attempt PCM8 at the cost of losing quality.
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if (_realDriver.SupportsSampleFormat(SampleFormat.PcmInt8))
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{
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return SampleFormat.PcmInt8;
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}
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}
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throw new ArgumentException("No valid sample format configuration found!");
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}
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public IHardwareDeviceSession OpenDeviceSession(Direction direction, IVirtualMemoryManager memoryManager, SampleFormat sampleFormat, uint sampleRate, uint channelCount, float volume)
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{
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if (channelCount == 0)
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{
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channelCount = 2;
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}
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if (sampleRate == 0)
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{
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sampleRate = Constants.TargetSampleRate;
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}
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volume = Math.Clamp(volume, 0, 1);
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if (!_realDriver.SupportsDirection(direction))
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{
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if (direction == Direction.Input)
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{
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Logger.Warning?.Print(LogClass.Audio, "The selected audio backend doesn't support audio input, fallback to dummy...");
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return new DummyHardwareDeviceSessionInput(this, memoryManager, sampleFormat, sampleRate, channelCount);
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}
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throw new NotImplementedException();
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}
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SampleFormat hardwareSampleFormat = SelectHardwareSampleFormat(sampleFormat);
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uint hardwareChannelCount = SelectHardwareChannelCount(channelCount);
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IHardwareDeviceSession realSession = _realDriver.OpenDeviceSession(direction, memoryManager, hardwareSampleFormat, sampleRate, hardwareChannelCount, volume);
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if (hardwareChannelCount == channelCount && hardwareSampleFormat == sampleFormat)
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{
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return realSession;
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}
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if (hardwareSampleFormat != sampleFormat)
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{
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Logger.Warning?.Print(LogClass.Audio, $"{sampleFormat} isn't supported by the audio device, conversion to {hardwareSampleFormat} will happen.");
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if (hardwareSampleFormat < sampleFormat)
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{
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Logger.Warning?.Print(LogClass.Audio, $"{hardwareSampleFormat} has lower quality than {sampleFormat}, expect some loss in audio fidelity.");
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}
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}
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if (direction == Direction.Input)
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{
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Logger.Warning?.Print(LogClass.Audio, $"The selected audio backend doesn't support the requested audio input configuration, fallback to dummy...");
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// TODO: We currently don't support audio input upsampling/downsampling, implement this.
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realSession.Dispose();
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return new DummyHardwareDeviceSessionInput(this, memoryManager, sampleFormat, sampleRate, channelCount);
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}
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// It must be a HardwareDeviceSessionOutputBase.
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if (realSession is not HardwareDeviceSessionOutputBase realSessionOutputBase)
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{
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throw new InvalidOperationException($"Real driver session class type isn't based on {typeof(HardwareDeviceSessionOutputBase).Name}.");
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}
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// If we need to do post processing before sending to the hardware device, wrap around it.
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return new CompatLayerHardwareDeviceSession(realSessionOutputBase, sampleFormat, channelCount);
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}
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public bool SupportsChannelCount(uint channelCount)
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{
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return channelCount == 1 || channelCount == 2 || channelCount == 6;
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}
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public bool SupportsSampleFormat(SampleFormat sampleFormat)
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{
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// TODO: More formats.
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return sampleFormat == SampleFormat.PcmInt16;
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}
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public bool SupportsSampleRate(uint sampleRate)
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{
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// TODO: More sample rates.
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return sampleRate == Constants.TargetSampleRate;
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}
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public IHardwareDeviceDriver GetRealDeviceDriver()
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{
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return _realDriver;
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}
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public bool SupportsDirection(Direction direction)
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{
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return direction == Direction.Input || direction == Direction.Output;
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}
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}
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} |