Move solution and projects to src

4 files changed, 403 insertions, 0 deletions

diff --git a/src/Ryujinx.Audio.Backends.OpenAL/OpenALAudioBuffer.cs b/src/Ryujinx.Audio.Backends.OpenAL/OpenALAudioBuffer.cs
new file mode 100644
index 00000000..050b52a9
--- /dev/null
+++ b/src/Ryujinx.Audio.Backends.OpenAL/OpenALAudioBuffer.cs
@@ -0,0 +1,9 @@
+namespace Ryujinx.Audio.Backends.OpenAL
+{
+    class OpenALAudioBuffer
+    {
+        public int BufferId;
+        public ulong DriverIdentifier;
+        public ulong SampleCount;
+    }
+}
diff --git a/src/Ryujinx.Audio.Backends.OpenAL/OpenALHardwareDeviceDriver.cs b/src/Ryujinx.Audio.Backends.OpenAL/OpenALHardwareDeviceDriver.cs
new file mode 100644
index 00000000..0c793f24
--- /dev/null
+++ b/src/Ryujinx.Audio.Backends.OpenAL/OpenALHardwareDeviceDriver.cs
@@ -0,0 +1,167 @@
+using OpenTK.Audio.OpenAL;
+using Ryujinx.Audio.Common;
+using Ryujinx.Audio.Integration;
+using Ryujinx.Memory;
+using System;
+using System.Collections.Concurrent;
+using System.Linq;
+using System.Threading;
+using static Ryujinx.Audio.Integration.IHardwareDeviceDriver;
+
+namespace Ryujinx.Audio.Backends.OpenAL
+{
+    public class OpenALHardwareDeviceDriver : IHardwareDeviceDriver
+    {
+        private readonly ALDevice _device;
+        private readonly ALContext _context;
+        private readonly ManualResetEvent _updateRequiredEvent;
+        private readonly ManualResetEvent _pauseEvent;
+        private readonly ConcurrentDictionary<OpenALHardwareDeviceSession, byte> _sessions;
+        private bool _stillRunning;
+        private Thread _updaterThread;
+
+        public OpenALHardwareDeviceDriver()
+        {
+            _device = ALC.OpenDevice("");
+            _context = ALC.CreateContext(_device, new ALContextAttributes());
+            _updateRequiredEvent = new ManualResetEvent(false);
+            _pauseEvent = new ManualResetEvent(true);
+            _sessions = new ConcurrentDictionary<OpenALHardwareDeviceSession, byte>();
+
+            _stillRunning = true;
+            _updaterThread = new Thread(Update)
+            {
+                Name = "HardwareDeviceDriver.OpenAL"
+            };
+
+            _updaterThread.Start();
+        }
+
+        public static bool IsSupported
+        {
+            get
+            {
+                try
+                {
+                    return ALC.GetStringList(GetEnumerationStringList.DeviceSpecifier).Any();
+                }
+                catch
+                {
+                    return false;
+                }
+            }
+        }
+
+        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;
+            }
+
+            if (direction != Direction.Output)
+            {
+                throw new ArgumentException($"{direction}");
+            }
+            else if (!SupportsChannelCount(channelCount))
+            {
+                throw new ArgumentException($"{channelCount}");
+            }
+
+            OpenALHardwareDeviceSession session = new OpenALHardwareDeviceSession(this, memoryManager, sampleFormat, sampleRate, channelCount, volume);
+
+            _sessions.TryAdd(session, 0);
+
+            return session;
+        }
+
+        internal bool Unregister(OpenALHardwareDeviceSession session)
+        {
+            return _sessions.TryRemove(session, out _);
+        }
+
+        public ManualResetEvent GetUpdateRequiredEvent()
+        {
+            return _updateRequiredEvent;
+        }
+
+        public ManualResetEvent GetPauseEvent()
+        {
+            return _pauseEvent;
+        }
+
+        private void Update()
+        {
+            ALC.MakeContextCurrent(_context);
+
+            while (_stillRunning)
+            {
+                bool updateRequired = false;
+
+                foreach (OpenALHardwareDeviceSession session in _sessions.Keys)
+                {
+                    if (session.Update())
+                    {
+                        updateRequired = true;
+                    }
+                }
+
+                if (updateRequired)
+                {
+                    _updateRequiredEvent.Set();
+                }
+
+                // If it's not slept it will waste cycles.
+                Thread.Sleep(10);
+            }
+        }
+
+        public void Dispose()
+        {
+            Dispose(true);
+        }
+
+        protected virtual void Dispose(bool disposing)
+        {
+            if (disposing)
+            {
+                _stillRunning = false;
+
+                foreach (OpenALHardwareDeviceSession session in _sessions.Keys)
+                {
+                    session.Dispose();
+                }
+
+                ALC.DestroyContext(_context);
+                ALC.CloseDevice(_device);
+
+                _pauseEvent.Dispose();
+            }
+        }
+
+        public bool SupportsSampleRate(uint sampleRate)
+        {
+            return true;
+        }
+
+        public bool SupportsSampleFormat(SampleFormat sampleFormat)
+        {
+            return true;
+        }
+
+        public bool SupportsChannelCount(uint channelCount)
+        {
+            return channelCount == 1 || channelCount == 2 || channelCount == 6;
+        }
+
+        public bool SupportsDirection(Direction direction)
+        {
+            return direction == Direction.Output;
+        }
+    }
+}
diff --git a/src/Ryujinx.Audio.Backends.OpenAL/OpenALHardwareDeviceSession.cs b/src/Ryujinx.Audio.Backends.OpenAL/OpenALHardwareDeviceSession.cs
new file mode 100644
index 00000000..ac3319e0
--- /dev/null
+++ b/src/Ryujinx.Audio.Backends.OpenAL/OpenALHardwareDeviceSession.cs
@@ -0,0 +1,212 @@
+using OpenTK.Audio.OpenAL;
+using Ryujinx.Audio.Backends.Common;
+using Ryujinx.Audio.Common;
+using Ryujinx.Memory;
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+
+namespace Ryujinx.Audio.Backends.OpenAL
+{
+    class OpenALHardwareDeviceSession : HardwareDeviceSessionOutputBase
+    {
+        private OpenALHardwareDeviceDriver _driver;
+        private int _sourceId;
+        private ALFormat _targetFormat;
+        private bool _isActive;
+        private Queue<OpenALAudioBuffer> _queuedBuffers;
+        private ulong _playedSampleCount;
+
+        private object _lock = new object();
+
+        public OpenALHardwareDeviceSession(OpenALHardwareDeviceDriver driver, IVirtualMemoryManager memoryManager, SampleFormat requestedSampleFormat, uint requestedSampleRate, uint requestedChannelCount, float requestedVolume) : base(memoryManager, requestedSampleFormat, requestedSampleRate, requestedChannelCount)
+        {
+            _driver = driver;
+            _queuedBuffers = new Queue<OpenALAudioBuffer>();
+            _sourceId = AL.GenSource();
+            _targetFormat = GetALFormat();
+            _isActive = false;
+            _playedSampleCount = 0;
+            SetVolume(requestedVolume);
+        }
+
+        private ALFormat GetALFormat()
+        {
+            switch (RequestedSampleFormat)
+            {
+                case SampleFormat.PcmInt16:
+                    switch (RequestedChannelCount)
+                    {
+                        case 1:
+                            return ALFormat.Mono16;
+                        case 2:
+                            return ALFormat.Stereo16;
+                        case 6:
+                            return ALFormat.Multi51Chn16Ext;
+                        default:
+                            throw new NotImplementedException($"Unsupported channel config {RequestedChannelCount}");
+                    }
+                default:
+                    throw new NotImplementedException($"Unsupported sample format {RequestedSampleFormat}");
+            }
+        }
+
+        public override void PrepareToClose() { }
+
+        private void StartIfNotPlaying()
+        {
+            AL.GetSource(_sourceId, ALGetSourcei.SourceState, out int stateInt);
+
+            ALSourceState State = (ALSourceState)stateInt;
+
+            if (State != ALSourceState.Playing)
+            {
+                AL.SourcePlay(_sourceId);
+            }
+        }
+
+        public override void QueueBuffer(AudioBuffer buffer)
+        {
+            lock (_lock)
+            {
+                OpenALAudioBuffer driverBuffer = new OpenALAudioBuffer
+                {
+                    DriverIdentifier = buffer.DataPointer,
+                    BufferId = AL.GenBuffer(),
+                    SampleCount = GetSampleCount(buffer)
+                };
+
+                AL.BufferData(driverBuffer.BufferId, _targetFormat, buffer.Data, (int)RequestedSampleRate);
+
+                _queuedBuffers.Enqueue(driverBuffer);
+
+                AL.SourceQueueBuffer(_sourceId, driverBuffer.BufferId);
+
+                if (_isActive)
+                {
+                    StartIfNotPlaying();
+                }
+            }
+        }
+
+        public override void SetVolume(float volume)
+        {
+            lock (_lock)
+            {
+                AL.Source(_sourceId, ALSourcef.Gain, volume);
+            }
+        }
+
+        public override float GetVolume()
+        {
+            AL.GetSource(_sourceId, ALSourcef.Gain, out float volume);
+
+            return volume;
+        }
+
+        public override void Start()
+        {
+            lock (_lock)
+            {
+                _isActive = true;
+
+                StartIfNotPlaying();
+            }
+        }
+
+        public override void Stop()
+        {
+            lock (_lock)
+            {
+                SetVolume(0.0f);
+
+                AL.SourceStop(_sourceId);
+
+                _isActive = false;
+            }
+        }
+
+        public override void UnregisterBuffer(AudioBuffer buffer) { }
+
+        public override bool WasBufferFullyConsumed(AudioBuffer buffer)
+        {
+            lock (_lock)
+            {
+                if (!_queuedBuffers.TryPeek(out OpenALAudioBuffer driverBuffer))
+                {
+                    return true;
+                }
+
+                return driverBuffer.DriverIdentifier != buffer.DataPointer;
+            }
+        }
+
+        public override ulong GetPlayedSampleCount()
+        {
+            lock (_lock)
+            {
+                return _playedSampleCount;
+            }
+        }
+
+        public bool Update()
+        {
+            lock (_lock)
+            {
+                if (_isActive)
+                {
+                    AL.GetSource(_sourceId, ALGetSourcei.BuffersProcessed, out int releasedCount);
+
+                    if (releasedCount > 0)
+                    {
+                        int[] bufferIds = new int[releasedCount];
+
+                        AL.SourceUnqueueBuffers(_sourceId, releasedCount, bufferIds);
+
+                        int i = 0;
+
+                        while (_queuedBuffers.TryPeek(out OpenALAudioBuffer buffer) && i < bufferIds.Length)
+                        {
+                            if (buffer.BufferId == bufferIds[i])
+                            {
+                                _playedSampleCount += buffer.SampleCount;
+
+                                _queuedBuffers.TryDequeue(out _);
+
+                                i++;
+                            }
+                        }
+
+                        Debug.Assert(i == bufferIds.Length, "Unknown buffer ids found!");
+
+                        AL.DeleteBuffers(bufferIds);
+                    }
+
+                    return releasedCount > 0;
+                }
+
+                return false;
+            }
+        }
+
+        protected virtual void Dispose(bool disposing)
+        {
+            if (disposing && _driver.Unregister(this))
+            {
+                lock (_lock)
+                {
+                    PrepareToClose();
+                    Stop();
+
+                    AL.DeleteSource(_sourceId);
+                }
+            }
+        }
+
+        public override void Dispose()
+        {
+            Dispose(true);
+            GC.SuppressFinalize(this);
+        }
+    }
+}
diff --git a/src/Ryujinx.Audio.Backends.OpenAL/Ryujinx.Audio.Backends.OpenAL.csproj b/src/Ryujinx.Audio.Backends.OpenAL/Ryujinx.Audio.Backends.OpenAL.csproj
new file mode 100644
index 00000000..115a3760
--- /dev/null
+++ b/src/Ryujinx.Audio.Backends.OpenAL/Ryujinx.Audio.Backends.OpenAL.csproj
@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net7.0</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="OpenTK.OpenAL" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Ryujinx.Audio\Ryujinx.Audio.csproj" />
+  </ItemGroup>
+
+</Project>