Basic audio support

Implement IAudioOut.
Small corrections on AudIAudioRenderer.
Add glitched audio playback support through OpenAL.

Ryujinx/OsHle/Objects/AudIAudioOut.cs

@@ -0,0 +1,164 @@
+using ChocolArm64.Memory;
+using Ryujinx.OsHle.Handles;
+using Ryujinx.OsHle.Ipc;
+using System.Collections.Generic;
+using System.IO;
+using static Ryujinx.OsHle.Objects.ObjHelper;
+using OpenTK.Audio;
+using OpenTK.Audio.OpenAL; // https://openal.org/downloads/OpenAL11CoreSDK.zip Needed!
+using System;
+
+namespace Ryujinx.OsHle.Objects
+{
+    class AudIAudioOut
+    {
+        enum AudioOutState
+        {
+            Started,
+            Stopped
+        };
+
+        //IAudioOut
+        private static AudioOutState State = AudioOutState.Stopped;
+        private static List<long> KeysQueue = new List<long>();
+
+        //OpenAL
+        private static bool OpenALInstalled = true;
+        private static AudioContext AudioCtx;
+        private static int Source;
+        private static int Buffer;
+
+        //Return State of IAudioOut
+        public static long GetAudioOutState(ServiceCtx Context)
+        {
+            Context.ResponseData.Write((int)State);
+
+            return 0;
+        }
+
+        public static long StartAudioOut(ServiceCtx Context)
+        {
+            if (State == AudioOutState.Stopped)
+            {
+                State = AudioOutState.Started;
+
+                try
+                { 
+                    AudioCtx = new AudioContext(); //Create the audio context
+                }
+                catch (Exception ex)
+                {
+                    Console.WriteLine("OpenAL Error! PS: Install OpenAL Core SDK!");
+                    OpenALInstalled = false;
+                }
+
+                if(OpenALInstalled) AL.Listener(ALListenerf.Gain, (float)8.0); //Add more gain to it
+            }
+
+            return 0;
+        }
+
+        public static 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 static long AppendAudioOutBuffer(ServiceCtx Context)
+        {
+            long BufferId = Context.RequestData.ReadInt64();
+
+            KeysQueue.Insert(0, BufferId);
+
+            byte[] AudioOutBuffer = AMemoryHelper.ReadBytes(Context.Memory, Context.Request.SendBuff[0].Position, 0x28);
+            using (MemoryStream MS = new MemoryStream(AudioOutBuffer))
+            {
+                BinaryReader Reader = new BinaryReader(MS);
+                long PointerToSampleDataPointer = Reader.ReadInt64();
+                long PointerToSampleData = Reader.ReadInt64();
+                long CapacitySampleBuffer = Reader.ReadInt64();
+                long SizeDataSampleBuffer = Reader.ReadInt64();
+                long Unknown = Reader.ReadInt64();
+
+                byte[] AudioSampleBuffer = AMemoryHelper.ReadBytes(Context.Memory, PointerToSampleData, (int)SizeDataSampleBuffer);
+
+                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 static long RegisterBufferEvent(ServiceCtx Context)
+        {
+            int Handle = Context.Ns.Os.Handles.GenerateId(new HEvent());
+
+            Context.Response.HandleDesc = IpcHandleDesc.MakeCopy(Handle);
+
+            return 0;
+        }
+
+        public static long GetReleasedAudioOutBuffer(ServiceCtx Context)
+        {
+            long TempKey = 0;
+
+            if(KeysQueue.Count > 0)
+            {
+                TempKey = KeysQueue[KeysQueue.Count - 1];
+                KeysQueue.Remove(KeysQueue[KeysQueue.Count - 1]);
+            }
+
+            AMemoryHelper.WriteBytes(Context.Memory, Context.Request.ReceiveBuff[0].Position, System.BitConverter.GetBytes(TempKey));
+
+            Context.ResponseData.Write((int)TempKey);
+
+            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 static long ContainsAudioOutBuffer(ServiceCtx Context)
+        {
+            return 0;
+        }
+
+        public static long AppendAudioOutBuffer_ex(ServiceCtx Context)
+        {
+            return 0;
+        }
+
+        public static long GetReleasedAudioOutBuffer_ex(ServiceCtx Context)
+        {
+            return 0;
+        }
+    }
+}