static VGM_HEADER ReadVGMHeader(BinaryReader hFile)
{
VGM_HEADER CurHead = new VGM_HEADER();
FieldInfo[] fields = typeof(VGM_HEADER).GetFields();
foreach (FieldInfo field in fields)
{
if (field.FieldType == typeof(uint))
{
uint val = hFile.ReadUInt32();
field.SetValue(CurHead, val);
}
else if (field.FieldType == typeof(ushort))
{
ushort val = hFile.ReadUInt16();
field.SetValue(CurHead, val);
}
else if (field.FieldType == typeof(char))
{
char val = hFile.ReadChar();
field.SetValue(CurHead, val);
}
else if (field.FieldType == typeof(byte))
{
byte val = hFile.ReadByte();
field.SetValue(CurHead, val);
}
}
// Header preperations
if (CurHead.lngVersion < 0x00000101)
{
CurHead.lngRate = 0;
}
if (CurHead.lngVersion < 0x00000110)
{
CurHead.shtPSG_Feedback = 0x0000;
CurHead.bytPSG_SRWidth = 0x00;
CurHead.lngHzYM2612 = CurHead.lngHzYM2413;
CurHead.lngHzYM2151 = CurHead.lngHzYM2413;
}
if (CurHead.lngHzPSG != 0)
{
if (CurHead.shtPSG_Feedback == 0)
{
CurHead.shtPSG_Feedback = 0x0009;
}
if (CurHead.bytPSG_SRWidth == 0)
{
CurHead.bytPSG_SRWidth = 0x10;
}
}
return(CurHead);
}
bool OpenVGMFile(string fileName)
{
bool zipped = CheckIfZip(fileName, 3, "1F-8B-08");
//Read size
uint FileSize = 0;
FileStream vgmFile = File.Open(fileName, FileMode.Open);
if (zipped)
{
vgmFile.Position = vgmFile.Length - 4;
byte[] b = new byte[4];
vgmFile.Read(b, 0, 4);
uint fileSize = BitConverter.ToUInt32(b, 0);
FileSize = fileSize;
vgmFile.Position = 0;
GZipStream stream = new GZipStream(vgmFile, CompressionMode.Decompress);
_vgmReader = new BinaryReader(stream);
zipped = true;
}
else
{
FileSize = (uint)vgmFile.Length;
_vgmReader = new BinaryReader(vgmFile);
}
uint fccHeader;
fccHeader = (uint)_vgmReader.ReadUInt32();
if (fccHeader != FCC_VGM)
{
return(false);
}
_VGMDataLen = FileSize;
_VGMHead = ReadVGMHeader(_vgmReader);
if (zipped)
{
_vgmReader.Close();
vgmFile = File.Open(fileName, FileMode.Open);
GZipStream stream = new GZipStream(vgmFile, CompressionMode.Decompress);
_vgmReader = new BinaryReader(stream);
}
else
{
_vgmReader.BaseStream.Seek(0, SeekOrigin.Begin);
}
//Figure out header offset
int offset = (int)_VGMHead.lngDataOffset;
if (offset == 0 || offset == 0x0000000C)
{
offset = 0x40;
}
_VGMDataOffset = offset;
_vgmReader.ReadBytes(offset);
_VGMData = _vgmReader.ReadBytes((int)(FileSize - offset));
_vgmReader = new BinaryReader(new MemoryStream(_VGMData));
if ((byte)_vgmReader.PeekChar() == 0x67)
{
_vgmReader.ReadByte();
if ((byte)_vgmReader.PeekChar() == 0x66)
{
_vgmReader.ReadByte();
byte type = _vgmReader.ReadByte();
uint size = _vgmReader.ReadUInt32();
_DACData = _vgmReader.ReadBytes((int)size);
}
}
vgmFile.Close();
return(true);
}
