woop woop call the cops see if i care
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goyuken
parent
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commit
8cfc640d1e
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@ -24,11 +24,42 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
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)]
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public class Gameboy : IEmulator, IVideoProvider, ISyncSoundProvider
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{
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#region ALL SAVESTATEABLE STATE GOES HERE
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/// <summary>
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/// internal gambatte state
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/// </summary>
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internal IntPtr GambatteState = IntPtr.Zero;
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public int Frame { get; set; }
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public int LagCount { get; set; }
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public bool IsLagFrame { get; private set; }
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// all cycle counts are relative to a 2*1024*1024 mhz refclock
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/// <summary>
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/// total cycles actually executed
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/// </summary>
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private ulong _cycleCount = 0;
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/// <summary>
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/// number of extra cycles we overran in the last frame
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/// </summary>
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private uint frameOverflow = 0;
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public ulong CycleCount { get { return _cycleCount; } }
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#endregion
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/// <summary>
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/// the nominal length of one frame
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/// </summary>
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private const uint TICKSINFRAME = 35112;
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/// <summary>
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/// number of ticks per second
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/// </summary>
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private const uint TICKSPERSECOND = 2097152;
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/// <summary>
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/// keep a copy of the input callback delegate so it doesn't get GCed
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/// </summary>
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@ -169,6 +200,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
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}
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}
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#region controller
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public static readonly ControllerDefinition GbController = new ControllerDefinition
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{
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Name = "Gameboy Controller",
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@ -192,6 +225,10 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
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return CurrentButtons;
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}
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#endregion
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#region debug
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public Dictionary<string, int> GetCpuFlagsAndRegisters()
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{
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int[] data = new int[10];
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@ -226,6 +263,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
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return (LibGambatte.gambatte_iscgb(GambatteState));
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}
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#endregion
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internal void FrameAdvancePrep()
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{
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Frame++;
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@ -273,39 +312,49 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
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endofframecallback(LibGambatte.gambatte_cpuread(GambatteState, 0xff40));
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}
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private ulong _cycleCount = 0;
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private uint frameOverflow = 0;
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private const uint TICKSINFRAME = 35112;
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public ulong CycleCount { get { return _cycleCount; } }
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public void FrameAdvance(bool render, bool rendersound)
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{
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FrameAdvancePrep();
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while (true)
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if (_SyncSettings.EqualLengthFrames)
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{
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uint samplesEmitted = TICKSINFRAME - frameOverflow; // according to gambatte docs, this is the nominal length of a frame in 2mhz clocks
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System.Diagnostics.Debug.Assert(samplesEmitted * 2 <= soundbuff.Length);
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while (true)
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{
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// target number of samples to emit: length of 1 frame minus whatever overflow
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uint samplesEmitted = TICKSINFRAME - frameOverflow;
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System.Diagnostics.Debug.Assert(samplesEmitted * 2 <= soundbuff.Length);
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if (LibGambatte.gambatte_runfor(GambatteState, soundbuff, ref samplesEmitted) > 0)
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LibGambatte.gambatte_blitto(GambatteState, VideoBuffer, 160);
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// account for actual number of samples emitted
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_cycleCount += (ulong)samplesEmitted;
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frameOverflow += samplesEmitted;
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if (rendersound)
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{
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ProcessSound((int)samplesEmitted);
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}
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if (frameOverflow >= TICKSINFRAME)
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{
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frameOverflow -= TICKSINFRAME;
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break;
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}
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}
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}
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else
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{
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// target number of samples to emit: always 59.7fps
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// runfor() always ends after creating a video frame, so sync-up is guaranteed
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// when the display has been off, some frames can be markedly shorter than expected
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uint samplesEmitted = TICKSINFRAME;
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if (LibGambatte.gambatte_runfor(GambatteState, soundbuff, ref samplesEmitted) > 0)
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LibGambatte.gambatte_blitto(GambatteState, VideoBuffer, 160);
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_cycleCount += (ulong)samplesEmitted;
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frameOverflow += samplesEmitted;
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frameOverflow = 0;
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if (rendersound)
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{
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soundbuffcontains = (int)samplesEmitted;
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ProcessSound();
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}
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else
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{
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soundbuffcontains = 0;
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}
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if (frameOverflow >= TICKSINFRAME)
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{
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frameOverflow -= TICKSINFRAME;
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break;
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ProcessSound((int)samplesEmitted);
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}
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}
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@ -313,8 +362,6 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
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ProcessSoundEnd();
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FrameAdvancePost();
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//DebugStates(); // for maximum fun only
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}
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static string MapperName(byte[] romdata)
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@ -398,16 +445,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
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return;
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}
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public int Frame { get; set; }
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public int LagCount { get; set; }
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public bool IsLagFrame { get; private set; }
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public string SystemId
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{
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get { return "GB"; }
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}
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public string SystemId { get { return "GB"; } }
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public string BoardName { get; private set; }
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@ -472,6 +510,10 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
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Frame = 0;
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LagCount = 0;
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IsLagFrame = false;
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// reset frame counters is meant to "re-zero" emulation time wherever it was
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// so these should be reset as well
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_cycleCount = 0;
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frameOverflow = 0;
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}
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#region savestates
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@ -582,19 +624,6 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
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public bool BinarySaveStatesPreferred { get { return true; } }
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/*
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void DebugStates()
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{
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var sd = new StateDebug();
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var Save = new LibGambatte.DataFunction(sd.Save);
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var Load = new LibGambatte.DataFunction(sd.Load);
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var EnterSection = new LibGambatte.SectionFunction(sd.EnterSection);
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var ExitSection = new LibGambatte.SectionFunction(sd.ExitSection);
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LibGambatte.gambatte_newstatesave_ex(GambatteState, Save, EnterSection, ExitSection);
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LibGambatte.gambatte_newstateload_ex(GambatteState, Load, EnterSection, ExitSection);
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}*/
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#endregion
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#region memorycallback
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@ -627,8 +656,6 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
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LibGambatte.gambatte_setexeccallback(GambatteState, execcb);
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}
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#endregion
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public CoreComm CoreComm { get; set; }
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@ -726,6 +753,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
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#endregion
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#region ppudebug
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public bool GetGPUMemoryAreas(out IntPtr vram, out IntPtr bgpal, out IntPtr sppal, out IntPtr oam)
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{
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IntPtr _vram = IntPtr.Zero;
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@ -878,11 +906,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
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/// <summary>
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/// sample pairs before resampling
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/// </summary>
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short[] soundbuff = new short[(35112 + 2064) * 2 * 4];
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/// <summary>
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/// how many sample pairs are in soundbuff
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/// </summary>
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int soundbuffcontains = 0;
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short[] soundbuff = new short[(35112 + 2064) * 2];
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int soundoutbuffcontains = 0;
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@ -894,9 +918,9 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
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BlipBuffer blipL, blipR;
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uint blipAccumulate;
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private void ProcessSound()
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private void ProcessSound(int nsamp)
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{
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for (uint i = 0; i < soundbuffcontains; i++)
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for (uint i = 0; i < nsamp; i++)
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{
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int curr = soundbuff[i * 2];
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@ -917,19 +941,17 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
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blipAccumulate++;
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}
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soundbuffcontains = 0;
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}
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private void ProcessSoundEnd()
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{
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blipL.EndFrame((uint)blipAccumulate);
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blipR.EndFrame((uint)blipAccumulate);
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blipL.EndFrame(blipAccumulate);
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blipR.EndFrame(blipAccumulate);
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blipAccumulate = 0;
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soundoutbuffcontains = blipL.SamplesAvailable();
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if (soundoutbuffcontains != blipR.SamplesAvailable())
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throw new Exception("Audio processing error");
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throw new InvalidOperationException("Audio processing error");
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blipL.ReadSamplesLeft(soundoutbuff, soundoutbuffcontains);
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blipR.ReadSamplesRight(soundoutbuff, soundoutbuffcontains);
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@ -938,9 +960,9 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
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void InitSound()
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{
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blipL = new BlipBuffer(1024);
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blipL.SetRates(2097152, 44100);
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blipL.SetRates(TICKSPERSECOND, 44100);
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blipR = new BlipBuffer(1024);
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blipR.SetRates(2097152, 44100);
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blipR.SetRates(TICKSPERSECOND, 44100);
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}
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void DisposeSound()
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@ -959,7 +981,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
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public void DiscardSamples()
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{
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soundbuffcontains = 0;
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soundoutbuffcontains = 0;
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}
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public void GetSamples(out short[] samples, out int nsamp)
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@ -1051,10 +1073,17 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
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get { return _RTCInitialTime; }
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set { _RTCInitialTime = Math.Max(0, Math.Min(1024 * 24 * 60 * 60, value)); }
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}
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[JsonIgnore]
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int _RTCInitialTime;
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[DisplayName("Equal Length Frames")]
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[Description("When false, emulation frames sync to vblank. Only useful for high level TASing.")]
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[DefaultValue(true)]
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public bool EqualLengthFrames { get { return _EqualLengthFrames; } set { _EqualLengthFrames = value; } }
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[JsonIgnore]
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[DeepEqualsIgnore]
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private bool _EqualLengthFrames;
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public GambatteSyncSettings()
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{
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SettingsUtil.SetDefaultValues(this);
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