void InitMemoryDomains()
{
CreateMemoryDomain(LibGambatte.MemoryAreas.wram, "WRAM");
CreateMemoryDomain(LibGambatte.MemoryAreas.rom, "ROM");
CreateMemoryDomain(LibGambatte.MemoryAreas.vram, "VRAM");
CreateMemoryDomain(LibGambatte.MemoryAreas.cartram, "Cart RAM");
CreateMemoryDomain(LibGambatte.MemoryAreas.oam, "OAM");
CreateMemoryDomain(LibGambatte.MemoryAreas.hram, "HRAM");
// also add a special memory domain for the system bus, where calls get sent directly to the core each time
_MemoryDomains.Add(new MemoryDomain("System Bus", 65536, MemoryDomain.Endian.Little,
delegate(int addr)
{
if (addr < 0 || addr >= 65536)
{
throw new ArgumentOutOfRangeException();
}
return(LibGambatte.gambatte_cpuread(GambatteState, (ushort)addr));
},
delegate(int addr, byte val)
{
if (addr < 0 || addr >= 65536)
{
throw new ArgumentOutOfRangeException();
}
LibGambatte.gambatte_cpuwrite(GambatteState, (ushort)addr, val);
}));
MemoryDomains = new MemoryDomainList(_MemoryDomains);
}
public bool GetGPUMemoryAreas(out IntPtr vram, out IntPtr bgpal, out IntPtr sppal, out IntPtr oam)
{
IntPtr _vram = IntPtr.Zero;
IntPtr _bgpal = IntPtr.Zero;
IntPtr _sppal = IntPtr.Zero;
IntPtr _oam = IntPtr.Zero;
int unused = 0;
if (!LibGambatte.gambatte_getmemoryarea(GambatteState, LibGambatte.MemoryAreas.vram, ref _vram, ref unused) ||
!LibGambatte.gambatte_getmemoryarea(GambatteState, LibGambatte.MemoryAreas.bgpal, ref _bgpal, ref unused) ||
!LibGambatte.gambatte_getmemoryarea(GambatteState, LibGambatte.MemoryAreas.sppal, ref _sppal, ref unused) ||
!LibGambatte.gambatte_getmemoryarea(GambatteState, LibGambatte.MemoryAreas.oam, ref _oam, ref unused))
{
vram = IntPtr.Zero;
bgpal = IntPtr.Zero;
sppal = IntPtr.Zero;
oam = IntPtr.Zero;
return(false);
}
vram = _vram;
bgpal = _bgpal;
sppal = _sppal;
oam = _oam;
return(true);
}
private void ProcessMbcSound(bool processSound)
{
int nsamp = LibGambatte.gambatte_generatembcsamples(GambatteState, _mbcsoundbuff);
if (nsamp == 0)
{
return;
}
for (uint i = 0; i < nsamp; i++)
{
int ls = _mbcsoundbuff[i * 2] - _mbcLatchL;
int rs = _mbcsoundbuff[(i * 2) + 1] - _mbcLatchR;
if (ls != 0 && processSound)
{
_blipL.AddDelta(i, ls);
}
if (rs != 0 && processSound)
{
_blipR.AddDelta(i, rs);
}
_mbcLatchL = _mbcsoundbuff[i * 2];
_mbcLatchR = _mbcsoundbuff[(i * 2) + 1];
}
}
public void Disconnect()
{
if (gb.GambatteState != IntPtr.Zero)
{
LibGambatte.gambatte_setlinkcallback(gb.GambatteState, null);
}
}
private void ProcessSgbSound(int nsamp, bool processSound)
{
int remainder = LibGambatte.gambatte_generatesgbsamples(GambatteState, _sgbsoundbuff, out uint samples);
if (remainder < 0)
{
throw new InvalidOperationException($"{nameof(LibGambatte.gambatte_generatesgbsamples)}() returned negative (spc error???)");
}
uint t = 65 - (uint)remainder;
for (int i = 0; i < samples; i++, t += 65)
{
int ls = _sgbsoundbuff[i * 2] - _sgbLatchL;
int rs = _sgbsoundbuff[(i * 2) + 1] - _sgbLatchR;
if (ls != 0 && processSound)
{
_blipL.AddDelta(t, ls);
}
if (rs != 0 && processSound)
{
_blipR.AddDelta(t, rs);
}
_sgbLatchL = _sgbsoundbuff[i * 2];
_sgbLatchR = _sgbsoundbuff[(i * 2) + 1];
}
}
public IDictionary <string, RegisterValue> GetCpuFlagsAndRegisters()
{
int[] data = new int[10];
LibGambatte.gambatte_getregs(GambatteState, data);
return(new Dictionary <string, RegisterValue>
{
["PC"] = (ushort)(data[(int)LibGambatte.RegIndices.PC] & 0xffff),
["SP"] = (ushort)(data[(int)LibGambatte.RegIndices.SP] & 0xffff),
["A"] = (byte)(data[(int)LibGambatte.RegIndices.A] & 0xff),
["B"] = (byte)(data[(int)LibGambatte.RegIndices.B] & 0xff),
["C"] = (byte)(data[(int)LibGambatte.RegIndices.C] & 0xff),
["D"] = (byte)(data[(int)LibGambatte.RegIndices.D] & 0xff),
["E"] = (byte)(data[(int)LibGambatte.RegIndices.E] & 0xff),
["F"] = (byte)(data[(int)LibGambatte.RegIndices.F] & 0xff),
["H"] = (byte)(data[(int)LibGambatte.RegIndices.H] & 0xff),
["L"] = (byte)(data[(int)LibGambatte.RegIndices.L] & 0xff),
// banks
["ROM0 BANK"] = (ushort)LibGambatte.gambatte_getbank(GambatteState, LibGambatte.BankType.ROM0),
["ROMX BANK"] = (ushort)LibGambatte.gambatte_getbank(GambatteState, LibGambatte.BankType.ROMX),
["VRAM BANK"] = (byte)LibGambatte.gambatte_getbank(GambatteState, LibGambatte.BankType.VRAM),
["SRAM BANK"] = (byte)LibGambatte.gambatte_getbank(GambatteState, LibGambatte.BankType.SRAM),
["WRAM BANK"] = (byte)LibGambatte.gambatte_getbank(GambatteState, LibGambatte.BankType.WRAM),
// todo: maybe do [bc]/[de]/[hl]?
});
}
/// <summary>
/// set up callback
/// </summary>
/// <param name="line">scanline. -1 = end of frame, -2 = RIGHT NOW</param>
public void SetScanlineCallback(ScanlineCallback callback, int line)
{
if (GambatteState == IntPtr.Zero)
{
return; // not sure how this is being reached. tried the debugger...
}
endofframecallback = null;
if (callback == null || line == -1 || line == -2)
{
scanlinecb = null;
LibGambatte.gambatte_setscanlinecallback(GambatteState, null, 0);
if (line == -1)
{
endofframecallback = callback;
}
else if (line == -2)
{
callback(LibGambatte.gambatte_cpuread(GambatteState, 0xff40));
}
}
else if (line >= 0 && line <= 153)
{
scanlinecb = delegate
{
callback(LibGambatte.gambatte_cpuread(GambatteState, 0xff40));
};
LibGambatte.gambatte_setscanlinecallback(GambatteState, scanlinecb, line);
}
else
{
throw new ArgumentOutOfRangeException(nameof(line), "line must be in [0, 153]");
}
}
private void MakeTrace(IntPtr _s)
{
int[] s = new int[14];
System.Runtime.InteropServices.Marshal.Copy(_s, s, 0, 14);
ushort unused;
Tracer.Put(new TraceInfo
{
Disassembly =
LR35902.Disassemble((ushort)s[1], addr => LibGambatte.gambatte_cpuread(GambatteState, addr), out unused)
.PadRight(36),
RegisterInfo =
string.Format(
"A:{3:x2} B:{4:x2} C:{5:x2} D:{6:x2} E:{7:x2} F:{8:x2} H:{9:x2} L:{10:x2} LY:{13:x2} SP:{2:x2} {11} Cy:{0}",
s[0],
s[1] & 0xffff,
s[2] & 0xffff,
s[3] & 0xff,
s[4] & 0xff,
s[5] & 0xff,
s[6] & 0xff,
s[7] & 0xff,
s[8] & 0xff,
s[9] & 0xff,
s[10] & 0xff,
s[11] != 0 ? "skip" : "",
s[12] & 0xff,
s[13] & 0xff)
});
}
/// <summary>
/// update gambatte core's internal colors
/// </summary>
public void ChangeDMGColors(int[] colors)
{
for (int i = 0; i < 12; i++)
{
LibGambatte.gambatte_setdmgpalettecolor(GambatteState, (LibGambatte.PalType)(i / 4), (uint)i % 4, (uint)colors[i]);
}
}
public void SaveStateBinary(BinaryWriter writer)
{
#if USE_UPSTREAM_STATES
int size = LibGambatte.gambatte_savestate(GambatteState, null, 160, _stateBuf);
if (size != _stateBuf.Length)
{
throw new InvalidOperationException("Savestate buffer size mismatch!");
}
#else
if (!LibGambatte.gambatte_newstatesave(GambatteState, _stateBuf, _stateBuf.Length))
{
throw new Exception($"{nameof(LibGambatte.gambatte_newstatesave)}() returned false");
}
#endif
writer.Write(_stateBuf.Length);
writer.Write(_stateBuf);
// other variables
writer.Write(IsLagFrame);
writer.Write(LagCount);
writer.Write(Frame);
writer.Write(frameOverflow);
writer.Write(_cycleCount);
writer.Write(IsCgb);
writer.Write(IsSgb);
}
public void LoadStateBinary(BinaryReader reader)
{
int length = reader.ReadInt32();
if (length != _stateBuf.Length)
{
throw new InvalidOperationException("Savestate buffer size mismatch!");
}
reader.Read(_stateBuf, 0, _stateBuf.Length);
#if USE_UPSTREAM_STATES
if (!LibGambatte.gambatte_loadstate(GambatteState, _stateBuf, _stateBuf.Length))
{
throw new Exception($"{nameof(LibGambatte.gambatte_loadstate)}() returned false");
}
#else
if (!LibGambatte.gambatte_newstateload(GambatteState, _stateBuf, _stateBuf.Length))
{
throw new Exception($"{nameof(LibGambatte.gambatte_newstateload)}() returned false");
}
#endif
// other variables
IsLagFrame = reader.ReadBoolean();
LagCount = reader.ReadInt32();
Frame = reader.ReadInt32();
frameOverflow = reader.ReadUInt32();
_cycleCount = reader.ReadUInt64();
IsCgb = reader.ReadBoolean();
IsSgb = reader.ReadBoolean();
}
public GambatteLink(CoreComm comm, GameInfo leftinfo, byte[] leftrom, GameInfo rightinfo, byte[] rightrom, object settings, object syncSettings, bool deterministic)
{
ServiceProvider = new BasicServiceProvider(this);
GambatteLinkSettings linkSettings = (GambatteLinkSettings)settings ?? new GambatteLinkSettings();
GambatteLinkSyncSettings linkSyncSettings = (GambatteLinkSyncSettings)syncSettings ?? new GambatteLinkSyncSettings();
L = new Gameboy(comm, leftinfo, leftrom, linkSettings.L, linkSyncSettings.L, deterministic);
R = new Gameboy(comm, rightinfo, rightrom, linkSettings.R, linkSyncSettings.R, deterministic);
// connect link cable
LibGambatte.gambatte_linkstatus(L.GambatteState, 259);
LibGambatte.gambatte_linkstatus(R.GambatteState, 259);
L.ConnectInputCallbackSystem(_inputCallbacks);
R.ConnectInputCallbackSystem(_inputCallbacks);
L.ConnectMemoryCallbackSystem(_memorycallbacks);
R.ConnectMemoryCallbackSystem(_memorycallbacks);
RomDetails = "LEFT:\r\n" + L.RomDetails + "RIGHT:\r\n" + R.RomDetails;
LinkConnected = true;
Frame = 0;
LagCount = 0;
IsLagFrame = false;
_blipLeft = new BlipBuffer(1024);
_blipRight = new BlipBuffer(1024);
_blipLeft.SetRates(2097152 * 2, 44100);
_blipRight.SetRates(2097152 * 2, 44100);
SetMemoryDomains();
}
private void InitMemoryCallbacks()
{
LibGambatte.MemoryCallback CreateCallback(MemoryCallbackFlags flags, Func <bool> getHasCBOfType)
{
var rawFlags = (uint)flags;
return((address, cycleOffset) =>
{
callbackCycleCount = _cycleCount + cycleOffset;
if (getHasCBOfType())
{
MemoryCallbacks.CallMemoryCallbacks(address, 0, rawFlags, systemBusScope);
}
});
}
_readcb = CreateCallback(MemoryCallbackFlags.AccessRead, () => MemoryCallbacks.HasReads);
_writecb = CreateCallback(MemoryCallbackFlags.AccessWrite, () => MemoryCallbacks.HasWrites);
_execcb = CreateCallback(MemoryCallbackFlags.AccessExecute, () => MemoryCallbacks.HasExecutes);
_memorycallbacks.ActiveChanged += () =>
{
LibGambatte.gambatte_setreadcallback(GambatteState, MemoryCallbacks.HasReads ? _readcb : null);
LibGambatte.gambatte_setwritecallback(GambatteState, MemoryCallbacks.HasWrites ? _writecb : null);
LibGambatte.gambatte_setexeccallback(GambatteState, MemoryCallbacks.HasExecutes ? _execcb : null);
};
}
internal void FrameAdvancePrep()
{
Frame++;
// update our local copy of the controller data
CurrentButtons = 0;
if (Controller["Up"])
{
CurrentButtons |= LibGambatte.Buttons.UP;
}
if (Controller["Down"])
{
CurrentButtons |= LibGambatte.Buttons.DOWN;
}
if (Controller["Left"])
{
CurrentButtons |= LibGambatte.Buttons.LEFT;
}
if (Controller["Right"])
{
CurrentButtons |= LibGambatte.Buttons.RIGHT;
}
if (Controller["A"])
{
CurrentButtons |= LibGambatte.Buttons.A;
}
if (Controller["B"])
{
CurrentButtons |= LibGambatte.Buttons.B;
}
if (Controller["Select"])
{
CurrentButtons |= LibGambatte.Buttons.SELECT;
}
if (Controller["Start"])
{
CurrentButtons |= LibGambatte.Buttons.START;
}
// the controller callback will set this to false if it actually gets called during the frame
IsLagFrame = true;
if (Controller["Power"])
{
LibGambatte.gambatte_reset(GambatteState, GetCurrentTime());
}
if (Tracer.Enabled)
{
tracecb = MakeTrace;
}
else
{
tracecb = null;
}
LibGambatte.gambatte_settracecallback(GambatteState, tracecb);
LibGambatte.gambatte_setlayers(GambatteState, (_settings.DisplayBG ? 1 : 0) | (_settings.DisplayOBJ ? 2 : 0) | (_settings.DisplayWindow ? 4 : 0));
}
void NewLoadCoreBinary(byte[] data)
{
if (!LibGambatte.gambatte_newstateload(GambatteState, data, data.Length))
{
throw new Exception("gambatte_newstateload() returned false");
}
}
public bool FrameAdvance(IController controller, bool render, bool rendersound)
{
FrameAdvancePrep(controller);
if (_syncSettings.EqualLengthFrames)
{
while (true)
{
// target number of samples to emit: length of 1 frame minus whatever overflow
uint samplesEmitted = TICKSINFRAME - frameOverflow;
Debug.Assert(samplesEmitted * 2 <= _soundbuff.Length);
if (LibGambatte.gambatte_runfor(GambatteState, _soundbuff, ref samplesEmitted) > 0)
{
LibGambatte.gambatte_blitto(GambatteState, VideoBuffer, 160);
}
// account for actual number of samples emitted
_cycleCount += samplesEmitted;
frameOverflow += samplesEmitted;
if (rendersound && !Muted)
{
ProcessSound((int)samplesEmitted);
}
if (frameOverflow >= TICKSINFRAME)
{
frameOverflow -= TICKSINFRAME;
break;
}
}
}
else
{
// target number of samples to emit: always 59.7fps
// runfor() always ends after creating a video frame, so sync-up is guaranteed
// when the display has been off, some frames can be markedly shorter than expected
uint samplesEmitted = TICKSINFRAME;
if (LibGambatte.gambatte_runfor(GambatteState, _soundbuff, ref samplesEmitted) > 0)
{
LibGambatte.gambatte_blitto(GambatteState, VideoBuffer, 160);
}
_cycleCount += samplesEmitted;
frameOverflow = 0;
if (rendersound && !Muted)
{
ProcessSound((int)samplesEmitted);
}
}
if (rendersound && !Muted)
{
ProcessSoundEnd();
}
FrameAdvancePost();
return(true);
}
private void RefreshMemoryCallbacks()
{
var mcs = MemoryCallbacks;
LibGambatte.gambatte_setreadcallback(GambatteState, mcs.HasReads ? _readcb : null);
LibGambatte.gambatte_setwritecallback(GambatteState, mcs.HasWrites ? _writecb : null);
LibGambatte.gambatte_setexeccallback(GambatteState, mcs.HasExecutes ? _execcb : null);
}
private void NewSaveCoreSetBuff()
{
#if USE_UPSTREAM_STATES
_stateBuf = new byte[LibGambatte.gambatte_savestate(GambatteState, null, 160, null)];
#else
_stateBuf = new byte[LibGambatte.gambatte_newstatelen(GambatteState)];
#endif
}
byte[] NewSaveCoreBinary()
{
if (!LibGambatte.gambatte_newstatesave(GambatteState, newsavebuff, newsavebuff.Length))
{
throw new Exception("gambatte_newstatesave() returned false");
}
return(newsavebuff);
}
public void StoreSaveRam(byte[] data)
{
if (data.Length != LibGambatte.gambatte_savesavedatalength(GambatteState))
{
throw new ArgumentException("Size of saveram data does not match expected!");
}
LibGambatte.gambatte_loadsavedata(GambatteState, data);
}
public void SetCpuRegister(string register, int value)
{
int[] data = new int[10];
LibGambatte.gambatte_getregs(GambatteState, data);
LibGambatte.RegIndices index = (LibGambatte.RegIndices)Enum.Parse(typeof(LibGambatte.RegIndices), register);
data[(int)index] = value & (index <= LibGambatte.RegIndices.SP ? 0xffff : 0xff);
LibGambatte.gambatte_setregs(GambatteState, data);
}
internal void FrameAdvancePost()
{
if (IsLagFrame)
{
LagCount++;
}
endofframecallback?.Invoke(LibGambatte.gambatte_cpuread(GambatteState, 0xff40));
}
public void Dispose()
{
if (GambatteState != IntPtr.Zero)
{
LibGambatte.gambatte_destroy(GambatteState);
GambatteState = IntPtr.Zero;
}
DisposeSound();
}
void OnSerial()
{
if (LibGambatte.gambatte_linkstatus(gb.GambatteState, 256) != 0) // ClockTrigger
{
LibGambatte.gambatte_linkstatus(gb.GambatteState, 257); // ack
byte output = HandleSerial((byte)LibGambatte.gambatte_linkstatus(gb.GambatteState, 258)); // GetOut
LibGambatte.gambatte_linkstatus(gb.GambatteState, output); // ShiftIn
}
}
public GambattePrinter(Gameboy gb, PrinterCallback callback)
{
this.gb = gb;
this.callback = callback;
linkCallback = OnSerial;
LibGambatte.gambatte_setlinkcallback(gb.GambatteState, linkCallback);
// connect the cable
LibGambatte.gambatte_linkstatus(gb.GambatteState, 259);
}
void ICodeDataLogger.SetCDL(CodeDataLog cdl)
{
CDL = cdl;
if (cdl == null)
{
LibGambatte.gambatte_setcdcallback(GambatteState, null);
}
else
{
LibGambatte.gambatte_setcdcallback(GambatteState, CDCallback);
}
}
internal void FrameAdvancePost()
{
if (IsLagFrame)
{
LagCount++;
}
if (endofframecallback != null)
{
endofframecallback(LibGambatte.gambatte_cpuread(GambatteState, 0xff40));
}
}
internal void LoadState(TextState <TextStateData> s)
{
s.Prepare();
var ff = s.GetFunctionPointersLoad();
LibGambatte.gambatte_newstateload_ex(GambatteState, ref ff);
IsLagFrame = s.ExtraData.IsLagFrame;
LagCount = s.ExtraData.LagCount;
Frame = s.ExtraData.Frame;
frameOverflow = s.ExtraData.frameOverflow;
_cycleCount = s.ExtraData._cycleCount;
}
void CreateMemoryDomain(LibGambatte.MemoryAreas which, string name)
{
IntPtr data = IntPtr.Zero;
int length = 0;
if (!LibGambatte.gambatte_getmemoryarea(GambatteState, which, ref data, ref length))
throw new Exception("gambatte_getmemoryarea() failed!");
// if length == 0, it's an empty block; (usually rambank on some carts); that's ok
if (data != IntPtr.Zero && length > 0)
_memoryDomains.Add(MemoryDomain.FromIntPtr(name, length, MemoryDomain.Endian.Little, data));
}
public byte[] CloneSaveRam()
{
int length = LibGambatte.gambatte_savesavedatalength(GambatteState, DeterministicEmulation);
if (length > 0)
{
byte[] ret = new byte[length];
LibGambatte.gambatte_savesavedata(GambatteState, ret, DeterministicEmulation);
return(ret);
}
return(new byte[0]);
}
public GPUMemoryAreas GetGPU()
{
int unused = 0;
if (!LibGambatte.gambatte_getmemoryarea(GambatteState, LibGambatte.MemoryAreas.vram, ref _vram, ref unused) ||
!LibGambatte.gambatte_getmemoryarea(GambatteState, LibGambatte.MemoryAreas.bgpal, ref _bgpal, ref unused) ||
!LibGambatte.gambatte_getmemoryarea(GambatteState, LibGambatte.MemoryAreas.sppal, ref _sppal, ref unused) ||
!LibGambatte.gambatte_getmemoryarea(GambatteState, LibGambatte.MemoryAreas.oam, ref _oam, ref unused))
{
throw new InvalidOperationException("Unexpected error in gambatte_getmemoryarea");
}
return(new GPUMemoryAreas(_vram, _oam, _sppal, _bgpal));
}
void CDCallbackProc(int addr, LibGambatte.CDLog_AddrType addrtype, LibGambatte.CDLog_Flags flags)
{
if (CDL == null) return;
if (!CDL.Active) return;
string key;
switch (addrtype)
{
case LibGambatte.CDLog_AddrType.ROM: key = "ROM"; break;
case LibGambatte.CDLog_AddrType.HRAM: key = "HRAM"; break;
case LibGambatte.CDLog_AddrType.WRAM: key = "WRAM"; break;
case LibGambatte.CDLog_AddrType.CartRAM: key = "CartRAM"; break;
default: throw new InvalidOperationException("Juniper lightbulb proxy");
}
CDL[key][addr] |= (byte)flags;
}
unsafe void CreateMemoryDomain(LibGambatte.MemoryAreas which, string name)
{
IntPtr data = IntPtr.Zero;
int length = 0;
if (!LibGambatte.gambatte_getmemoryarea(GambatteState, which, ref data, ref length))
throw new Exception("gambatte_getmemoryarea() failed!");
// if length == 0, it's an empty block; (usually rambank on some carts); that's ok
// TODO: when length == 0, should we simply not add the memory domain at all?
if (data == IntPtr.Zero && length > 0)
throw new Exception("bad return from gambatte_getmemoryarea()");
byte* ptr = (byte*)data;
_MemoryDomains.Add(new MemoryDomain(name, length, MemoryDomain.Endian.Little,
delegate(int addr)
{
if (addr < 0 || addr >= length)
throw new ArgumentOutOfRangeException();
return ptr[addr];
},
delegate(int addr, byte val)
{
if (addr < 0 || addr >= length)
throw new ArgumentOutOfRangeException();
ptr[addr] = val;
}));
}
