Ryujinx/Ryujinx.Core/OsHle/Services/Aud/IAudioOut.cs

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C#
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using ChocolArm64.Memory;
using Ryujinx.Core.OsHle.Handles;
using Ryujinx.Core.OsHle.Ipc;
using OpenTK.Audio;
using OpenTK.Audio.OpenAL;
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using System;
using System.Collections.Generic;
using System.IO;
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namespace Ryujinx.Core.OsHle.IpcServices.Aud
{
class IAudioOut : IIpcService
{
private Dictionary<int, ServiceProcessRequest> m_Commands;
public IReadOnlyDictionary<int, ServiceProcessRequest> Commands => m_Commands;
public IAudioOut()
{
m_Commands = new Dictionary<int, ServiceProcessRequest>()
{
{ 0, GetAudioOutState },
{ 1, StartAudioOut },
{ 2, StopAudioOut },
{ 3, AppendAudioOutBuffer },
{ 4, RegisterBufferEvent },
{ 5, GetReleasedAudioOutBuffer },
{ 6, ContainsAudioOutBuffer },
{ 7, AppendAudioOutBuffer_ex },
{ 8, GetReleasedAudioOutBuffer_ex }
};
}
enum AudioOutState
{
Started,
Stopped
};
//IAudioOut
private AudioOutState State = AudioOutState.Stopped;
private Queue<long> KeysQueue = new Queue<long>();
//OpenAL
private bool OpenALInstalled = true;
private AudioContext AudioCtx;
private int Source;
private int Buffer;
//Return State of IAudioOut
public long GetAudioOutState(ServiceCtx Context)
{
Context.ResponseData.Write((int)State);
return 0;
}
public long StartAudioOut(ServiceCtx Context)
{
if (State == AudioOutState.Stopped)
{
State = AudioOutState.Started;
try
{
AudioCtx = new AudioContext(); //Create the audio context
}
catch (Exception)
{
Logging.Warn("OpenAL Error! PS: Install OpenAL Core SDK!");
OpenALInstalled = false;
}
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if (OpenALInstalled) AL.Listener(ALListenerf.Gain, (float)8.0); //Add more gain to it
}
return 0;
}
public long StopAudioOut(ServiceCtx Context)
{
if (State == AudioOutState.Started)
{
if (OpenALInstalled)
{
if (AudioCtx == null) //Needed to call the instance of AudioContext()
return 0;
AL.SourceStop(Source);
AL.DeleteSource(Source);
}
State = AudioOutState.Stopped;
}
return 0;
}
public long AppendAudioOutBuffer(ServiceCtx Context)
{
long BufferId = Context.RequestData.ReadInt64();
KeysQueue.Enqueue(BufferId);
byte[] AudioOutBuffer = AMemoryHelper.ReadBytes(Context.Memory, Context.Request.SendBuff[0].Position, sizeof(long) * 5);
using (MemoryStream MS = new MemoryStream(AudioOutBuffer))
{
BinaryReader Reader = new BinaryReader(MS);
long PointerNextBuffer = Reader.ReadInt64();
long PointerSampleBuffer = Reader.ReadInt64();
long CapacitySampleBuffer = Reader.ReadInt64();
long SizeDataInSampleBuffer = Reader.ReadInt64();
long OffsetDataInSampleBuffer = Reader.ReadInt64();
byte[] AudioSampleBuffer = AMemoryHelper.ReadBytes(Context.Memory, PointerSampleBuffer + OffsetDataInSampleBuffer, (int)SizeDataInSampleBuffer);
if (OpenALInstalled)
{
if (AudioCtx == null) //Needed to call the instance of AudioContext()
return 0;
Buffer = AL.GenBuffer();
AL.BufferData(Buffer, ALFormat.Stereo16, AudioSampleBuffer, AudioSampleBuffer.Length, 48000);
Source = AL.GenSource();
AL.SourceQueueBuffer(Source, Buffer);
}
}
return 0;
}
public long RegisterBufferEvent(ServiceCtx Context)
{
int Handle = Context.Ns.Os.Handles.GenerateId(new HEvent());
Context.Response.HandleDesc = IpcHandleDesc.MakeCopy(Handle);
return 0;
}
public long GetReleasedAudioOutBuffer(ServiceCtx Context)
{
long TempKey = 0;
if (KeysQueue.Count > 0) TempKey = KeysQueue.Dequeue();
AMemoryHelper.WriteBytes(Context.Memory, Context.Request.ReceiveBuff[0].Position, BitConverter.GetBytes(TempKey));
int ReleasedBuffersCount = 1;
Context.ResponseData.Write(ReleasedBuffersCount);
if (OpenALInstalled)
{
if (AudioCtx == null) //Needed to call the instance of AudioContext()
return 0;
AL.SourcePlay(Source);
int[] FreeBuffers = AL.SourceUnqueueBuffers(Source, 1);
AL.DeleteBuffers(FreeBuffers);
}
return 0;
}
public long ContainsAudioOutBuffer(ServiceCtx Context)
{
return 0;
}
public long AppendAudioOutBuffer_ex(ServiceCtx Context)
{
return 0;
}
public long GetReleasedAudioOutBuffer_ex(ServiceCtx Context)
{
return 0;
}
}
}