public static NesHeader FromBytes(byte[] bytes)
{
BinaryHeader binHeader = new BinaryHeader(bytes);
NesHeader header = new NesHeader();
header.IsNes20 = binHeader.GetRomHeaderVersion() == RomHeaderVersion.Nes2_0;
header.PrgRom = (uint)(binHeader.GetPrgSize());
header.ChrRom = (uint)(binHeader.GetChrSize());
header.HasTrainer = binHeader.HasTrainer();
header.HasBattery = binHeader.HasBattery();
header.System = binHeader.GetTvSystem();
header.Timing = binHeader.GetFrameTiming();
header.Mirroring = binHeader.GetMirroringType();
header.MapperId = (uint)binHeader.GetMapperID();
header.SubmapperId = (uint)binHeader.GetSubMapper();
header.WorkRam = (MemorySizes)binHeader.GetWorkRamSize();
header.SaveRam = (MemorySizes)binHeader.GetSaveRamSize();
header.ChrRam = (MemorySizes)binHeader.GetChrRamSize();
header.ChrRamBattery = (MemorySizes)binHeader.GetSaveChrRamSize();
header.InputType = binHeader.GetInputType();
header.VsPpu = (VsPpuType)bytes[13];
header.VsSystem = binHeader.GetVsSystemType();
return(header);
}
public BinaryHeader ReadHeader()
{
var header = new BinaryHeader();
// Check if the stream isn't too small to be a proper file
if (mReader.BaseStreamLength < BinaryHeader.SIZE)
{
throw new InvalidDataException("Stream is too small to be valid");
}
header.FileType = mReader.ReadByte();
header.IsCompressed = mReader.ReadByte() != 0;
header.UserId = mReader.ReadInt16();
header.FileSize = mReader.ReadInt32();
header.Magic = mReader.ReadBytes(4);
header.Field0C = mReader.ReadInt32();
header.RelocationTable.Offset = mReader.ReadInt32();
header.RelocationTableSize = mReader.ReadInt32();
header.DialogCount = mReader.ReadInt32();
header.IsRelocated = mReader.ReadInt16() != 0;
header.Field1E = mReader.ReadInt16();
// swap endianness
if (header.Magic.SequenceEqual(BinaryHeader.MAGIC_V1) || header.Magic.SequenceEqual(BinaryHeader.MAGIC_V0))
{
if (mVersion.HasFlag(BinaryFormatVersion.BigEndian))
{
SwapHeader(ref header);
mReader.Endianness = Endianness.LittleEndian;
}
mVersion = BinaryFormatVersion.Version1;
}
else if (header.Magic.SequenceEqual(BinaryHeader.MAGIC_V1_BE))
{
if (!mVersion.HasFlag(BinaryFormatVersion.BigEndian))
{
SwapHeader(ref header);
mReader.Endianness = Endianness.BigEndian;
}
mVersion = BinaryFormatVersion.Version1BigEndian;
}
else
{
throw new InvalidDataException("Header magic value does not match");
}
if (header.RelocationTable.Offset != 0)
{
mReader.EnqueuePositionAndSeekBegin(mPositionBase + header.RelocationTable.Offset);
header.RelocationTable.Value = mReader.ReadBytes(header.RelocationTableSize);
mReader.SeekBeginToDequedPosition();
}
return(header);
}
private void SwapHeader(ref BinaryHeader header)
{
EndiannessHelper.Swap(ref header.UserId);
EndiannessHelper.Swap(ref header.FileSize);
EndiannessHelper.Swap(ref header.Field0C);
EndiannessHelper.Swap(ref header.RelocationTable.Offset);
EndiannessHelper.Swap(ref header.RelocationTableSize);
EndiannessHelper.Swap(ref header.DialogCount);
EndiannessHelper.Swap(ref header.Field1E);
}
private void WriteHeader(ref BinaryHeader header)
{
mWriter.Write(header.FileType);
mWriter.Write(header.IsCompressed ? ( byte )1 : ( byte )0);
mWriter.Write(header.UserId);
mWriter.Write(header.FileSize);
mWriter.Write(header.Magic);
mWriter.Write(header.Field0C);
mWriter.Write(header.RelocationTable.Offset);
mWriter.Write(header.RelocationTableSize);
mWriter.Write(header.DialogCount);
mWriter.Write(header.IsRelocated ? ( short )1 : ( short )0);
mWriter.Write(header.Field1E);
}
private void WriteHeader(ref BinaryHeader header)
{
mWriter.Write(header.FileType);
mWriter.Write(header.Format);
mWriter.Write(header.UserId);
mWriter.Write(header.FileSize);
mWriter.Write(header.Magic);
mWriter.Write(header.ExtSize);
mWriter.Write(header.RelocationTable.Offset);
mWriter.Write(header.RelocationTableSize);
mWriter.Write(header.DialogCount);
mWriter.Write(header.IsRelocated ? ( short )1 : ( short )0);
mWriter.Write(header.Version);
}
/// <summary>
/// 初期化
/// </summary>
/// <param name="data"></param>
public void Initialize(byte[] data)
{
var device = GraphicsCore.D3D11Device;
// byte配列からポインタを取得
var handle = GCHandle.Alloc(data, GCHandleType.Pinned);
IntPtr ptr = handle.AddrOfPinnedObject();
BinaryHeader header = (BinaryHeader)Marshal.PtrToStructure(ptr, typeof(BinaryHeader));
IntPtr vs_ptr = ptr + (int)header.vs_offset;
IntPtr ps_ptr = ptr + (int)header.ps_offset;
name_ = "0x" + header.id.ToString("x8");
shaderId_ = header.id;
// 頂点シェーダ
using (ShaderBytecode bytecode = new ShaderBytecode(new SlimDX.DataStream(vs_ptr, header.vs_size, true, false))) {
vertexShader_ = new VertexShader(device, bytecode);
using (ShaderReflection reflect = new ShaderReflection(bytecode)) {
// レイアウト生成
vertexAttr_ = reflect.GetVertexLayoutAttribute();
int layout_id = Shader.GetVertexLayoutID(vertexAttr_);
inputLayout_ = new InputLayout(device, bytecode, sLayoutList[layout_id]);
// コンスタントバッファ解決
ResolveConstantBuffer(reflect);
}
}
// ピクセルシェーダ
using (ShaderBytecode bytecode = new ShaderBytecode(new SlimDX.DataStream(ps_ptr, header.ps_size, true, false))) {
pixelShader_ = new PixelShader(device, bytecode);
using (ShaderReflection reflect = new ShaderReflection(bytecode)) {
// コンスタントバッファ解決
ResolveConstantBuffer(reflect);
}
}
// ハンドル解放
handle.Free();
Initilaized = true;
}
public static NesHeader FromBytes(byte[] bytes)
{
BinaryHeader binHeader = new BinaryHeader(bytes);
NesHeader header = new NesHeader();
header.IsNes20 = binHeader.GetRomHeaderVersion() == RomHeaderVersion.Nes2_0;
header.PrgRom = (uint)(binHeader.GetPrgSize() * 16);
header.ChrRom = (uint)(binHeader.GetChrSize() * 8);
header.HasTrainer = binHeader.HasTrainer();
header.HasBattery = binHeader.HasBattery();
if (binHeader.IsVsSystem())
{
header.System = TvSystem.VsSystem;
}
else if (binHeader.IsPlaychoice())
{
header.System = TvSystem.Playchoice;
}
else if (binHeader.IsPalRom())
{
header.System = TvSystem.Pal;
}
else
{
header.System = TvSystem.Ntsc;
}
header.Mirroring = binHeader.GetMirroringType();
header.MapperId = (uint)binHeader.GetMapperID();
header.SubmapperId = (uint)binHeader.GetSubMapper();
header.WorkRam = (MemorySizes)binHeader.GetWorkRamSize();
header.SaveRam = (MemorySizes)binHeader.GetSaveRamSize();
header.ChrRam = (MemorySizes)binHeader.GetChrRamSize();
header.ChrRamBattery = (MemorySizes)binHeader.GetSaveChrRamSize();
header.VsPpu = (VsPpuType)bytes[13];
return(header);
}
