53 lines
1.5 KiB
C#
53 lines
1.5 KiB
C#
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using System;
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using System.Runtime.InteropServices;
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using BizHawk.Emulation.Common;
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namespace BizHawk.Emulation.Cores.Nintendo.SNES
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{
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public unsafe partial class LibsnesCore : ISaveRam
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{
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public bool SaveRamModified =>
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api.QUERY_get_memory_size(LibsnesApi.SNES_MEMORY.CARTRIDGE_RAM) != 0
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|| api.QUERY_get_memory_size(LibsnesApi.SNES_MEMORY.SGB_CARTRAM) != 0;
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public byte[] CloneSaveRam()
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{
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byte* buf = api.QUERY_get_memory_data(LibsnesApi.SNES_MEMORY.CARTRIDGE_RAM);
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var size = api.QUERY_get_memory_size(LibsnesApi.SNES_MEMORY.CARTRIDGE_RAM);
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if (buf == null)
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{
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buf = api.QUERY_get_memory_data(LibsnesApi.SNES_MEMORY.SGB_CARTRAM);
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size = api.QUERY_get_memory_size(LibsnesApi.SNES_MEMORY.SGB_CARTRAM);
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}
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var ret = new byte[size];
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Marshal.Copy((IntPtr)buf, ret, 0, size);
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return ret;
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}
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public void StoreSaveRam(byte[] data)
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{
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byte* buf = api.QUERY_get_memory_data(LibsnesApi.SNES_MEMORY.CARTRIDGE_RAM);
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var size = api.QUERY_get_memory_size(LibsnesApi.SNES_MEMORY.CARTRIDGE_RAM);
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if (buf == null)
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{
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buf = api.QUERY_get_memory_data(LibsnesApi.SNES_MEMORY.SGB_CARTRAM);
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size = api.QUERY_get_memory_size(LibsnesApi.SNES_MEMORY.SGB_CARTRAM);
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}
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if (size == 0)
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{
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return;
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}
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if (size != data.Length)
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{
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throw new InvalidOperationException("Somehow, we got a mismatch between saveram size and what bsnes says the saveram size is");
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}
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Marshal.Copy(data, 0, (IntPtr)buf, size);
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}
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}
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}
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