psphawk: add the c# interfaces, as well as a compiled final dll (note: debug mode). to use psphawk, first uncomment the hack in MainForm.cs, then ensure that you have a valid PSP ISO located at "D:\Games\jpcsp\umdimages\Final Fantasy Anniversary Edition [U] [ULUS-10251].iso", then try to load a valid sega saturn game.

BizHawk.Emulation/Consoles/Sony/PSP/PPSSPPDll.cs

@@ -0,0 +1,29 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Runtime.InteropServices;
+
+namespace BizHawk.Emulation.Consoles.Sony.PSP
+{
+	public static class PPSSPPDll
+	{
+		const CallingConvention cc = CallingConvention.StdCall;
+		const string dd = "PPSSPPBizhawk.dll";
+
+		[UnmanagedFunctionPointer(cc)]
+		public delegate void LogCB(char type, string message);
+
+		[DllImport(dd, CallingConvention = cc)]
+		public static extern bool init(string fn, LogCB logcallback);
+
+		[DllImport(dd, CallingConvention = cc)]
+		public static extern void setvidbuff(IntPtr buff);
+
+		[DllImport(dd, CallingConvention = cc)]
+		public static extern void die();
+
+		[DllImport(dd, CallingConvention = cc)]
+		public static extern void advance();
+	}
+}

BizHawk.Emulation/Consoles/Sony/PSP/PSP.cs

@@ -0,0 +1,194 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Runtime.InteropServices;
+
+namespace BizHawk.Emulation.Consoles.Sony.PSP
+{
+	public class PSP : IEmulator, IVideoProvider, ISyncSoundProvider
+	{
+		public static readonly ControllerDefinition PSPController = new ControllerDefinition
+		{
+			Name = "PSP Controller",
+			BoolButtons = { "TO", "BE", "CHANGED" }
+		};
+
+		public IVideoProvider VideoProvider { get { return this; } }
+		public ISoundProvider SoundProvider { get { return null; } }
+		public ISyncSoundProvider SyncSoundProvider { get { return this; } }
+		public bool StartAsyncSound() { return false; }
+		public void EndAsyncSound() { }
+		public ControllerDefinition ControllerDefinition { get { return PSPController; } }
+		public IController Controller { get; set; }
+		public bool DeterministicEmulation { get { return true; } }
+		public string SystemId { get { return "PSP"; } }
+		public bool BinarySaveStatesPreferred { get { return true; } }
+		public CoreComm CoreComm { get; private set; }
+
+
+		PPSSPPDll.LogCB logcallback = null;
+		Queue<string> debugmsgs = new Queue<string>();
+		void LogCallbackFunc(char type, string message)
+		{
+			debugmsgs.Enqueue(string.Format("PSP: {0} {1}", type, message));
+		}
+		void LogFlush()
+		{
+			while (debugmsgs.Count > 0)
+			{
+				Console.WriteLine(debugmsgs.Dequeue());
+			}
+		}
+
+
+		bool disposed = false;
+		static PSP attachedcore = null;
+		GCHandle vidhandle;
+
+		public PSP(CoreComm comm)
+		{
+			if (attachedcore != null)
+			{
+				attachedcore.Dispose();
+				attachedcore = null;
+			}
+			CoreComm = comm;
+
+			logcallback = new PPSSPPDll.LogCB(LogCallbackFunc);
+
+			bool good = PPSSPPDll.init(@"D:\Games\jpcsp\umdimages\Final Fantasy Anniversary Edition [U] [ULUS-10251].iso", logcallback);
+			LogFlush();
+			if (!good)
+				throw new Exception("PPSSPP Init failed!");
+			vidhandle = GCHandle.Alloc(screenbuffer, GCHandleType.Pinned);
+			PPSSPPDll.setvidbuff(vidhandle.AddrOfPinnedObject());
+
+			CoreComm.VsyncDen = 1;
+			CoreComm.VsyncNum = 60;
+			CoreComm.RomStatusDetails = "It puts the scythe in the chicken or it gets the abyss again!";
+
+			attachedcore = this;
+		}
+
+		public void Dispose()
+		{
+			if (!disposed)
+			{
+				vidhandle.Free();
+				PPSSPPDll.setvidbuff(IntPtr.Zero);
+				PPSSPPDll.die();
+				logcallback = null;
+				disposed = true;
+			}
+		}
+
+
+
+		public void FrameAdvance(bool render, bool rendersound = true)
+		{
+			PPSSPPDll.advance();
+		}
+
+		public int Frame
+		{
+			get { return 0; }
+		}
+
+		public int LagCount
+		{
+			get
+			{
+				return 0;
+			}
+			set
+			{
+			}
+		}
+
+		public bool IsLagFrame
+		{
+			get { return true; }
+		}
+
+		public byte[] ReadSaveRam()
+		{
+			return new byte[0];
+		}
+
+		public void StoreSaveRam(byte[] data)
+		{
+		}
+
+		public void ClearSaveRam()
+		{
+		}
+
+		public bool SaveRamModified
+		{
+			get
+			{
+				return false;
+			}
+			set
+			{
+			}
+		}
+
+		public void ResetFrameCounter()
+		{
+		}
+
+		public void SaveStateText(System.IO.TextWriter writer)
+		{
+		}
+
+		public void LoadStateText(System.IO.TextReader reader)
+		{
+		}
+
+		public void SaveStateBinary(System.IO.BinaryWriter writer)
+		{
+		}
+
+		public void LoadStateBinary(System.IO.BinaryReader reader)
+		{
+		}
+
+		public byte[] SaveStateBinary()
+		{
+			return new byte[0];
+		}
+
+		public IList<MemoryDomain> MemoryDomains
+		{
+			get { throw new NotImplementedException(); }
+		}
+
+		public MemoryDomain MainMemory
+		{
+			get { throw new NotImplementedException(); }
+		}
+
+
+
+		const int screenwidth = 480;
+		const int screenheight = 272;
+		readonly int[] screenbuffer = new int[screenwidth * screenheight];
+		public int[] GetVideoBuffer() { return screenbuffer; }
+		public int VirtualWidth { get { return screenwidth; } }
+		public int BufferWidth { get { return screenwidth; } }
+		public int BufferHeight { get { return screenheight; } }
+		public int BackgroundColor { get { return unchecked((int)0xff000000); } }
+
+		readonly short[] audiobuffer = new short[735 * 2];
+		public void GetSamples(out short[] samples, out int nsamp)
+		{			
+			samples = audiobuffer;	
+			nsamp = 735;	
+		}
+		public void DiscardSamples()
+		{
+		}
+	}
+}