82 lines
2.4 KiB
C#
82 lines
2.4 KiB
C#
using System;
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using System.IO;
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using BizHawk.Common.BufferExtensions;
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using BizHawk.Emulation.Common;
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namespace BizHawk.Emulation.Cores.Consoles.Nintendo.QuickNES
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{
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public partial class QuickNES : IStatable
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{
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public bool BinarySaveStatesPreferred { get { return true; } }
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public void SaveStateText(System.IO.TextWriter writer)
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{
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CheckDisposed();
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var temp = SaveStateBinary();
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temp.SaveAsHexFast(writer);
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// write extra copy of stuff we don't use
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writer.WriteLine("Frame {0}", Frame);
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}
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public void LoadStateText(System.IO.TextReader reader)
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{
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CheckDisposed();
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string hex = reader.ReadLine();
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byte[] state = new byte[hex.Length / 2];
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state.ReadFromHexFast(hex);
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LoadStateBinary(new System.IO.BinaryReader(new System.IO.MemoryStream(state)));
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}
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public void SaveStateBinary(System.IO.BinaryWriter writer)
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{
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CheckDisposed();
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LibQuickNES.ThrowStringError(LibQuickNES.qn_state_save(Context, SaveStateBuff, SaveStateBuff.Length));
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writer.Write(SaveStateBuff.Length);
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writer.Write(SaveStateBuff);
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// other variables
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writer.Write(IsLagFrame);
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writer.Write(LagCount);
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writer.Write(Frame);
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}
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public void LoadStateBinary(System.IO.BinaryReader reader)
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{
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CheckDisposed();
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int len = reader.ReadInt32();
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if (len != SaveStateBuff.Length)
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throw new InvalidOperationException("Unexpected savestate buffer length!");
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reader.Read(SaveStateBuff, 0, SaveStateBuff.Length);
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LibQuickNES.ThrowStringError(LibQuickNES.qn_state_load(Context, SaveStateBuff, SaveStateBuff.Length));
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// other variables
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IsLagFrame = reader.ReadBoolean();
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LagCount = reader.ReadInt32();
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Frame = reader.ReadInt32();
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}
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public byte[] SaveStateBinary()
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{
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CheckDisposed();
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var ms = new System.IO.MemoryStream(SaveStateBuff2, true);
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var bw = new System.IO.BinaryWriter(ms);
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SaveStateBinary(bw);
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bw.Flush();
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if (ms.Position != SaveStateBuff2.Length)
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throw new InvalidOperationException("Unexpected savestate length!");
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bw.Close();
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return SaveStateBuff2;
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}
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private byte[] SaveStateBuff;
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private byte[] SaveStateBuff2;
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private void InitSaveStateBuff()
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{
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int size = 0;
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LibQuickNES.ThrowStringError(LibQuickNES.qn_state_size(Context, ref size));
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SaveStateBuff = new byte[size];
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SaveStateBuff2 = new byte[size + 13];
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}
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}
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}
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