81 lines
1.9 KiB
C#
81 lines
1.9 KiB
C#
using System;
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using System.IO;
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using BizHawk.Emulation.Common;
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namespace BizHawk.Emulation.Cores.Nintendo.GBA
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{
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public partial class MGBAHawk : IStatable
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{
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private byte[] _savebuff = new byte[0];
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private byte[] _savebuff2 = new byte[13];
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private void StartSaveStateBinaryInternal()
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{
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IntPtr p = IntPtr.Zero;
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int size = 0;
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if (!LibmGBA.BizStartGetState(Core, ref p, ref size))
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{
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throw new InvalidOperationException("Core failed to save!");
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}
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if (size != _savebuff.Length)
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{
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_savebuff = new byte[size];
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_savebuff2 = new byte[size + 13];
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}
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LibmGBA.BizFinishGetState(p, _savebuff, size);
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}
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private void FinishSaveStateBinaryInternal(BinaryWriter writer)
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{
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writer.Write(_savebuff.Length);
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writer.Write(_savebuff, 0, _savebuff.Length);
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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 SaveStateBinary(BinaryWriter writer)
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{
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StartSaveStateBinaryInternal();
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FinishSaveStateBinaryInternal(writer);
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}
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public void LoadStateBinary(BinaryReader reader)
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{
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int length = reader.ReadInt32();
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if (length != _savebuff.Length)
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{
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_savebuff = new byte[length];
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_savebuff2 = new byte[length + 13];
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}
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reader.Read(_savebuff, 0, length);
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if (!LibmGBA.BizPutState(Core, _savebuff, length))
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{
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throw new InvalidOperationException("Core rejected the savestate!");
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}
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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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StartSaveStateBinaryInternal();
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using var ms = new MemoryStream(_savebuff2, true);
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using var bw = new BinaryWriter(ms);
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FinishSaveStateBinaryInternal(bw);
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bw.Flush();
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ms.Close();
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return _savebuff2;
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}
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}
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}
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