Path: blob/master/BizHawk.Emulation.Cores/Consoles/Nintendo/GBA/Meteor.cs
2 views
using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using System.IO;
using BizHawk.Common.BufferExtensions;
using BizHawk.Emulation.Common;
namespace BizHawk.Emulation.Cores.Nintendo.GBA
{
[CoreAttributes(
"Meteor",
"blastrock",
isPorted: true,
isReleased: false,
singleInstance: true
)]
[ServiceNotApplicable(typeof(IDriveLight), typeof(IRegionable))]
public partial class GBA : IEmulator, IVideoProvider, ISoundProvider, IGBAGPUViewable, ISaveRam, IStatable, IInputPollable
{
[CoreConstructor("GBA")]
public GBA(CoreComm comm, byte[] file)
{
ServiceProvider = new BasicServiceProvider(this);
Tracer = new TraceBuffer
{
Header = " -Addr--- -Opcode- -Instruction------------------- -R0----- -R1----- -R2----- -R3----- -R4----- -R5----- -R6----- -R7----- -R8----- -R9----- -R10---- -R11---- -R12---- -R13(SP) -R14(LR) -R15(PC) -CPSR--- -SPSR---"
};
(ServiceProvider as BasicServiceProvider).Register<ITraceable>(Tracer);
CoreComm = comm;
comm.VsyncNum = 262144;
comm.VsyncDen = 4389;
comm.NominalWidth = 240;
comm.NominalHeight = 160;
byte[] bios = CoreComm.CoreFileProvider.GetFirmware("GBA", "Bios", true, "GBA bios file is mandatory.");
if (bios.Length != 16384)
throw new InvalidDataException("GBA bios must be exactly 16384 bytes!");
if (file.Length > 32 * 1024 * 1024)
throw new InvalidDataException("Rom file is too big! No GBA game is larger than 32MB");
Init();
LibMeteor.libmeteor_hardreset();
LibMeteor.libmeteor_loadbios(bios, (uint)bios.Length);
LibMeteor.libmeteor_loadrom(file, (uint)file.Length);
SetUpMemoryDomains();
}
public IEmulatorServiceProvider ServiceProvider { get; private set; }
public IDictionary<string, RegisterValue> GetCpuFlagsAndRegisters()
{
var ret = new Dictionary<string, RegisterValue>();
int[] data = new int[LibMeteor.regnames.Length];
LibMeteor.libmeteor_getregs(data);
for (int i = 0; i < data.Length; i++)
ret.Add(LibMeteor.regnames[i], data[i]);
return ret;
}
public static readonly ControllerDefinition GBAController =
new ControllerDefinition
{
Name = "GBA Controller",
BoolButtons =
{
"Up", "Down", "Left", "Right", "Start", "Select", "B", "A", "L", "R", "Power"
},
FloatControls =
{
"Tilt X", "Tilt Y", "Tilt Z", "Light Sensor"
},
FloatRanges =
{
new[] { -32767f, 0f, 32767f },
new[] { -32767f, 0f, 32767f },
new[] { -32767f, 0f, 32767f },
new[] { 0f, 100f, 200f },
}
};
public ControllerDefinition ControllerDefinition { get { return GBAController; } }
public IController Controller { get; set; }
public void FrameAdvance(bool render, bool rendersound = true)
{
Frame++;
IsLagFrame = true;
if (Controller.IsPressed("Power"))
LibMeteor.libmeteor_hardreset();
// due to the design of the tracing api, we have to poll whether it's active each frame
LibMeteor.libmeteor_settracecallback(Tracer.Enabled ? tracecallback : null);
if (!coredead)
LibMeteor.libmeteor_frameadvance();
if (IsLagFrame)
LagCount++;
}
public int Frame { get; private set; }
public int LagCount { get; set; }
public bool IsLagFrame { get; set; }
private readonly InputCallbackSystem _inputCallbacks = new InputCallbackSystem();
// TODO: optimize managed to unmanaged using the ActiveChanged event
public IInputCallbackSystem InputCallbacks { [FeatureNotImplemented]get { return _inputCallbacks; } }
private ITraceable Tracer { get; set; }
public string SystemId { get { return "GBA"; } }
public bool DeterministicEmulation { get { return true; } }
// todo: information about the saveram type would be useful here.
public string BoardName { get { return null; } }
public void ResetCounters()
{
Frame = 0;
LagCount = 0;
IsLagFrame = false;
}
public CoreComm CoreComm { get; private set; }
/// <summary>like libsnes, the library is single-instance</summary>
static GBA attachedcore;
/// <summary>hold pointer to message callback so it won't get GCed</summary>
LibMeteor.MessageCallback messagecallback;
/// <summary>hold pointer to input callback so it won't get GCed</summary>
LibMeteor.InputCallback inputcallback;
/// <summary>true if libmeteor aborted</summary>
bool coredead = false;
/// <summary>hold pointer to trace callback so it won't get GCed</summary>
LibMeteor.TraceCallback tracecallback;
LibMeteor.Buttons GetInput()
{
InputCallbacks.Call();
// libmeteor bitflips everything itself, so 0 == off, 1 == on
IsLagFrame = false;
LibMeteor.Buttons ret = 0;
if (Controller.IsPressed("Up")) ret |= LibMeteor.Buttons.BTN_UP;
if (Controller.IsPressed("Down")) ret |= LibMeteor.Buttons.BTN_DOWN;
if (Controller.IsPressed("Left")) ret |= LibMeteor.Buttons.BTN_LEFT;
if (Controller.IsPressed("Right")) ret |= LibMeteor.Buttons.BTN_RIGHT;
if (Controller.IsPressed("Select")) ret |= LibMeteor.Buttons.BTN_SELECT;
if (Controller.IsPressed("Start")) ret |= LibMeteor.Buttons.BTN_START;
if (Controller.IsPressed("B")) ret |= LibMeteor.Buttons.BTN_B;
if (Controller.IsPressed("A")) ret |= LibMeteor.Buttons.BTN_A;
if (Controller.IsPressed("L")) ret |= LibMeteor.Buttons.BTN_L;
if (Controller.IsPressed("R")) ret |= LibMeteor.Buttons.BTN_R;
return ret;
}
#region messagecallbacks
void PrintMessage(string msg, bool abort)
{
Console.Write(msg.Replace("\n", "\r\n"));
if (abort)
StopCore(msg);
}
void StopCore(string msg)
{
coredead = true;
Console.WriteLine("Core stopped.");
for (int i = 0; i < soundbuffer.Length; i++)
soundbuffer[i] = 0;
var gz = new System.IO.Compression.GZipStream(
new MemoryStream(Convert.FromBase64String(dispfont), false),
System.IO.Compression.CompressionMode.Decompress);
byte[] font = new byte[2048];
gz.Read(font, 0, 2048);
gz.Dispose();
// cores aren't supposed to have bad dependencies like System.Drawing, right?
int scx = 0;
int scy = 0;
foreach (char c in msg)
{
if (scx == 240 || c == '\n')
{
scy += 8;
scx = 0;
}
if (scy == 160)
break;
if (c == '\r' || c == '\n')
continue;
if (c < 256 && c != ' ')
{
int fpos = c * 8;
for (int j = 0; j < 8; j++)
{
for (int i = 0; i < 8; i++)
{
if ((font[fpos] >> i & 1) != 0)
videobuffer[(scy + j) * 240 + scx + i] = unchecked((int)0xffff0000);
else
videobuffer[(scy + j) * 240 + scx + i] = unchecked((int)0xff000000);
}
fpos++;
}
}
scx += 8;
}
}
const string dispfont =
"H4sICAInrFACAGZvby5yYXcARVU9q9RAFL2gjK8IT+0GDGoh1oGFGHDYQvwL2hoQroXhsdUqGGbxZ/gD" +
"bKys7BRhIZVYLgurIghvG3ksCPKKJfGcm1nfSTJn750792smWUmIr9++/vjmdYzDZlhuh1guFotpfiRH" +
"+dQ4n+aLxfOj/MgUR7mID8GLDMN2CftBgj54oEGG5ZuPH98sh93P3afJZHIzqGrw0e+/7LPs+OqVvuu7" +
"7vTZJb8J223Y+MtZHvLsstwuqlAVt+E1eh+DV0JU+s3mx3q9luCChjoIsVgI7Wg2kAHBQ1mkqPu6EBhk" +
"feYFcM5F0B0d9A74WtX2QvRtdU0SrBp6kaZpKIJ7XI341oV66sVp4TOtJS/L/IN+k8pnQkCbZb4QPEVB" +
"nYYhKB16JHZwbsZRDuBEDWsnEnQeTzSIz60CyHWV6cg19LOXjfb1TqKb1pSrzE0VHBUOvIed8ia3dZGb" +
"c96JM0ZhfgzPBPCbkWEPEs/4j+fO1kd2HM55Q0bf4PdmCW15E/HdFI1M7Dg/Z1xN64InguxqpGn6kkvF" +
"GaJ0Z32/6jrRkxjntFciMB79mTwPM5NLm0ffWac3iCb7kbx0XbfqzzqhEGBPLe2i9TVKmxGtiGPFIm1N" +
"tNj+ppMLDDl7Ywh1q62gPEUKlJX1Yw3k1uTo2P9sCseQW3Y80B4QLznrNwaOnbMGUDK9SNOvVgxt9vQH" +
"gj51IPn7SdlRFDt4MoarIGvKwyoFd6tV34CtAWTLRySiAZF5Oq5DcHvyAvuO8/FtLgZrRNcf9tlp8l/4" +
"sc64HPuhMnLmR/Z3jA/9cbAzexVj2CU59SPYD+rJyU6VfsiIh5NtL+j+/b7cyzmOu+op1wXrjzHXG2Ow" +
"Qikba6pbgwL0P7J4y89XDRsY7ZxEXLcmkydP/zz9NVv74P2N4yLVVaT8wIxDNv9NaRtG1pM5kinLVqKY" +
"ERndzXhOgOicGNe1yPLp5NUXnezAm99//3ymoX0xodQvsMKoE5GH18fr3aPx+v5ivPwFbt1KIx9VffYM" +
"g30GyUkPbV1zJgGzJpt+sWAxGEWSHwH4izg/hwAeBjEMw0GPweTDfNLyUWzSqdroXN+L9L1z1Gy3tsKe" +
"7Zbzpj/oOE+9P8iq5j/Nj/HUQK+S4omkuMJIaqD3g5+xQ2KwvIcEKshXE3YJNkfgjbg7/8YNLbV0Lqo6" +
"AFEaQqJmPlM7n+l9VeDHJTm57wGJPtjRwhg53+LD1DRnMvNFO9q3q9WqFfncnq6+tm7mszbzM4QziERe" +
"h7+LyO+zz8AYfQGerdf+P27cOBYaeUubt1RNU138q4wg74qiuFeGKjQA5BwOgxABACX8A6+GHm0ACAAA";
#endregion
// Tracer refactor TODO - rehook up meteor, if it is worth it
//void Trace(string msg)
//{
// Tracer.Put(msg);
//}
private void Init()
{
if (attachedcore != null)
attachedcore.Dispose();
messagecallback = PrintMessage;
inputcallback = GetInput;
// Tracer refactor TODO - rehook up meteor, if it is worth it
//tracecallback = Trace; // don't set this callback now, only set if enabled
LibMeteor.libmeteor_setmessagecallback(messagecallback);
LibMeteor.libmeteor_setkeycallback(inputcallback);
LibMeteor.libmeteor_init();
videobuffer = new int[240 * 160];
videohandle = GCHandle.Alloc(videobuffer, GCHandleType.Pinned);
soundbuffer = new short[2048]; // nominal length of one frame is something like 1480 shorts?
soundhandle = GCHandle.Alloc(soundbuffer, GCHandleType.Pinned);
if (!LibMeteor.libmeteor_setbuffers
(videohandle.AddrOfPinnedObject(), (uint)(sizeof(int) * videobuffer.Length),
soundhandle.AddrOfPinnedObject(), (uint)(sizeof(short) * soundbuffer.Length)))
throw new Exception("libmeteor_setbuffers() returned false??");
attachedcore = this;
}
private bool disposed = false;
public void Dispose()
{
if (!disposed)
{
disposed = true;
videohandle.Free();
soundhandle.Free();
// guarantee crash if it gets accessed
LibMeteor.libmeteor_setbuffers(IntPtr.Zero, 240 * 160 * 4, IntPtr.Zero, 4);
messagecallback = null;
inputcallback = null;
tracecallback = null;
LibMeteor.libmeteor_setmessagecallback(messagecallback);
LibMeteor.libmeteor_setkeycallback(inputcallback);
LibMeteor.libmeteor_settracecallback(tracecallback);
_domainList.Clear();
}
}
#region ISoundProvider
short[] soundbuffer;
GCHandle soundhandle;
public void GetSamplesSync(out short[] samples, out int nsamp)
{
uint nbytes = LibMeteor.libmeteor_emptysound();
samples = soundbuffer;
if (!coredead)
nsamp = (int)(nbytes / 4);
else
nsamp = 738;
}
public void DiscardSamples()
{
LibMeteor.libmeteor_emptysound();
}
public bool CanProvideAsync
{
get { return false; }
}
public void SetSyncMode(SyncSoundMode mode)
{
if (mode == SyncSoundMode.Async)
{
throw new NotSupportedException("Async mode is not supported.");
}
}
public SyncSoundMode SyncMode
{
get { return SyncSoundMode.Sync; }
}
public void GetSamplesAsync(short[] samples)
{
throw new InvalidOperationException("Async mode is not supported.");
}
#endregion
}
}