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using Ryujinx.Audio.Backends.SoundIo.Native;
using Ryujinx.Audio.Common;
using Ryujinx.Audio.Integration;
using Ryujinx.Memory;
using System;
using System.Collections.Concurrent;
using System.Threading;
using static Ryujinx.Audio.Backends.SoundIo.Native.SoundIo;
using static Ryujinx.Audio.Integration.IHardwareDeviceDriver;
namespace Ryujinx.Audio.Backends.SoundIo
{
public class SoundIoHardwareDeviceDriver : IHardwareDeviceDriver
{
private readonly SoundIoContext _audioContext;
private readonly SoundIoDeviceContext _audioDevice;
private readonly ManualResetEvent _updateRequiredEvent;
private readonly ManualResetEvent _pauseEvent;
private readonly ConcurrentDictionary<SoundIoHardwareDeviceSession, byte> _sessions;
private int _disposeState;
public SoundIoHardwareDeviceDriver()
{
_audioContext = SoundIoContext.Create();
_updateRequiredEvent = new ManualResetEvent(false);
_pauseEvent = new ManualResetEvent(true);
_sessions = new ConcurrentDictionary<SoundIoHardwareDeviceSession, byte>();
_audioContext.Connect();
_audioContext.FlushEvents();
_audioDevice = FindValidAudioDevice(_audioContext, true);
}
public static bool IsSupported => IsSupportedInternal();
private static bool IsSupportedInternal()
{
SoundIoContext context = null;
SoundIoDeviceContext device = null;
SoundIoOutStreamContext stream = null;
bool backendDisconnected = false;
try
{
context = SoundIoContext.Create();
context.OnBackendDisconnect = err =>
{
backendDisconnected = true;
};
context.Connect();
context.FlushEvents();
if (backendDisconnected)
{
return false;
}
if (context.OutputDeviceCount == 0)
{
return false;
}
device = FindValidAudioDevice(context);
if (device == null || backendDisconnected)
{
return false;
}
stream = device.CreateOutStream();
if (stream == null || backendDisconnected)
{
return false;
}
return true;
}
catch
{
return false;
}
finally
{
stream?.Dispose();
context?.Dispose();
}
}
private static SoundIoDeviceContext FindValidAudioDevice(SoundIoContext audioContext, bool fallback = false)
{
SoundIoDeviceContext defaultAudioDevice = audioContext.GetOutputDevice(audioContext.DefaultOutputDeviceIndex);
if (!defaultAudioDevice.IsRaw)
{
return defaultAudioDevice;
}
for (int i = 0; i < audioContext.OutputDeviceCount; i++)
{
SoundIoDeviceContext audioDevice = audioContext.GetOutputDevice(i);
if (audioDevice.Id == defaultAudioDevice.Id && !audioDevice.IsRaw)
{
return audioDevice;
}
}
return fallback ? defaultAudioDevice : null;
}
public ManualResetEvent GetUpdateRequiredEvent()
{
return _updateRequiredEvent;
}
public ManualResetEvent GetPauseEvent()
{
return _pauseEvent;
}
public IHardwareDeviceSession OpenDeviceSession(Direction direction, IVirtualMemoryManager memoryManager, SampleFormat sampleFormat, uint sampleRate, uint channelCount, float volume)
{
if (channelCount == 0)
{
channelCount = 2;
}
if (sampleRate == 0)
{
sampleRate = Constants.TargetSampleRate;
}
volume = Math.Clamp(volume, 0, 1);
if (direction != Direction.Output)
{
throw new NotImplementedException("Input direction is currently not implemented on SoundIO backend!");
}
SoundIoHardwareDeviceSession session = new(this, memoryManager, sampleFormat, sampleRate, channelCount, volume);
_sessions.TryAdd(session, 0);
return session;
}
internal bool Unregister(SoundIoHardwareDeviceSession session)
{
return _sessions.TryRemove(session, out _);
}
public static SoundIoFormat GetSoundIoFormat(SampleFormat format)
{
return format switch
{
SampleFormat.PcmInt8 => SoundIoFormat.S8,
SampleFormat.PcmInt16 => SoundIoFormat.S16LE,
SampleFormat.PcmInt24 => SoundIoFormat.S24LE,
SampleFormat.PcmInt32 => SoundIoFormat.S32LE,
SampleFormat.PcmFloat => SoundIoFormat.Float32LE,
_ => throw new ArgumentException($"Unsupported sample format {format}"),
};
}
internal SoundIoOutStreamContext OpenStream(SampleFormat requestedSampleFormat, uint requestedSampleRate, uint requestedChannelCount)
{
SoundIoFormat driverSampleFormat = GetSoundIoFormat(requestedSampleFormat);
if (!_audioDevice.SupportsSampleRate((int)requestedSampleRate))
{
throw new ArgumentException($"This sound device does not support a sample rate of {requestedSampleRate}Hz");
}
if (!_audioDevice.SupportsFormat(driverSampleFormat))
{
throw new ArgumentException($"This sound device does not support {requestedSampleFormat}");
}
if (!_audioDevice.SupportsChannelCount((int)requestedChannelCount))
{
throw new ArgumentException($"This sound device does not support channel count {requestedChannelCount}");
}
SoundIoOutStreamContext result = _audioDevice.CreateOutStream();
result.Name = "Ryujinx";
result.Layout = SoundIoChannelLayout.GetDefaultValue((int)requestedChannelCount);
result.Format = driverSampleFormat;
result.SampleRate = (int)requestedSampleRate;
return result;
}
internal void FlushContextEvents()
{
_audioContext.FlushEvents();
}
public void Dispose()
{
GC.SuppressFinalize(this);
if (Interlocked.CompareExchange(ref _disposeState, 1, 0) == 0)
{
Dispose(true);
}
}
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
foreach (SoundIoHardwareDeviceSession session in _sessions.Keys)
{
session.Dispose();
}
_audioContext.Disconnect();
_audioContext.Dispose();
_pauseEvent.Dispose();
}
}
public bool SupportsSampleRate(uint sampleRate)
{
return _audioDevice.SupportsSampleRate((int)sampleRate);
}
public bool SupportsSampleFormat(SampleFormat sampleFormat)
{
return _audioDevice.SupportsFormat(GetSoundIoFormat(sampleFormat));
}
public bool SupportsChannelCount(uint channelCount)
{
return _audioDevice.SupportsChannelCount((int)channelCount);
}
public bool SupportsDirection(Direction direction)
{
// TODO: add direction input when supported.
return direction == Direction.Output;
}
}
}
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