Stub a few services, add support for generating call stacks on the CPU

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

@@ -0,0 +1,110 @@
+using ChocolArm64.Memory;
+using Ryujinx.Core.OsHle.Handles;
+using Ryujinx.Core.OsHle.Ipc;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Ryujinx.Core.OsHle.Services.Aud
+{
+    class IAudioDevice : IpcService
+    {
+        private Dictionary<int, ServiceProcessRequest> m_Commands;
+
+        public override IReadOnlyDictionary<int, ServiceProcessRequest> Commands => m_Commands;
+
+        private KEvent SystemEvent;
+
+        public IAudioDevice()
+        {
+            m_Commands = new Dictionary<int, ServiceProcessRequest>()
+            {
+                { 0, ListAudioDeviceName         },
+                { 1, SetAudioDeviceOutputVolume  },
+                { 3, GetActiveAudioDeviceName    },
+                { 4, QueryAudioDeviceSystemEvent },
+                { 5, GetActiveChannelCount       }
+            };
+
+            SystemEvent = new KEvent();
+
+            //TODO: We shouldn't be signaling this here.
+            SystemEvent.WaitEvent.Set();
+        }
+
+        public long ListAudioDeviceName(ServiceCtx Context)
+        {
+            string[] Names = new string[] { "FIXME" };
+
+            Context.ResponseData.Write(Names.Length);
+
+            long Position = Context.Request.ReceiveBuff[0].Position;
+            long Size     = Context.Request.ReceiveBuff[0].Size;
+
+            long BasePosition = Position;
+
+            foreach (string Name in Names)
+            {
+                byte[] Buffer = Encoding.ASCII.GetBytes(Name + '\0');
+
+                if ((Position - BasePosition) + Buffer.Length > Size)
+                {
+                    break;
+                }
+
+                AMemoryHelper.WriteBytes(Context.Memory, Position, Buffer);
+
+                Position += Buffer.Length;
+            }
+
+            return 0;
+        }
+
+        public long SetAudioDeviceOutputVolume(ServiceCtx Context)
+        {
+            float Volume = Context.RequestData.ReadSingle();
+
+            long Position = Context.Request.SendBuff[0].Position;
+            long Size     = Context.Request.SendBuff[0].Size;
+
+            string Name = AMemoryHelper.ReadAsciiString(Context.Memory, Position, Size);
+
+            Logging.Stub(LogClass.ServiceAudio, $"Volume = {Volume}, Position = {Position}, Size = {Size}");
+
+            return 0;
+        }
+
+        public long GetActiveAudioDeviceName(ServiceCtx Context)
+        {
+            string Name = "FIXME";
+
+            long Position = Context.Request.ReceiveBuff[0].Position;
+            long Size     = Context.Request.ReceiveBuff[0].Size;
+
+            byte[] Buffer = Encoding.ASCII.GetBytes(Name + '\0');
+
+            AMemoryHelper.WriteBytes(Context.Memory, Position, Buffer);
+
+            return 0;
+        }
+
+        public long QueryAudioDeviceSystemEvent(ServiceCtx Context)
+        {
+            int Handle = Context.Process.HandleTable.OpenHandle(SystemEvent);
+
+            Context.Response.HandleDesc = IpcHandleDesc.MakeCopy(Handle);
+
+            Logging.Stub(LogClass.ServiceAudio, "Stubbed");
+
+            return 0;
+        }
+
+        public long GetActiveChannelCount(ServiceCtx Context)
+        {
+            Context.ResponseData.Write(2);
+
+            Logging.Stub(LogClass.ServiceAudio, "Stubbed");
+
+            return 0;
+        }
+    }
+}