private static void ReadMap(ImcFile imc, BinaryReader file, int imusRawSize)
{
int mapSize = file.ReadBigEndianInt32();
if (Encoding.ASCII.GetString(file.ReadBytes(4)) != "FRMT")
{
throw new InvalidDataException();
}
int frmtSize = file.ReadBigEndianInt32();
if (frmtSize != 20)
{
throw new InvalidDataException();
}
int frmtPosition = file.ReadBigEndianInt32();
if (mapSize + 24 != frmtPosition)
{
throw new InvalidDataException();
}
int frmtIsBigEndian = file.ReadBigEndianInt32();
if (frmtIsBigEndian != 1)
{
throw new InvalidDataException();
}
imc.BitsPerSample = file.ReadBigEndianInt32();
imc.SampleRate = file.ReadBigEndianInt32();
imc.Channels = file.ReadBigEndianInt32();
int blockAlign = imc.BlockAlign;
while (true)
{
string fourcc = Encoding.ASCII.GetString(file.ReadBytes(4));
if (string.Equals(fourcc, "STOP", StringComparison.Ordinal))
{
int size = file.ReadBigEndianInt32();
if (size != 4)
{
throw new InvalidDataException();
}
int position = file.ReadBigEndianInt32() - frmtPosition;
if (position != imusRawSize - mapSize - 16)
{
throw new InvalidDataException();
}
break;
}
switch (fourcc)
{
case "REGN":
var regn = new ImcRegnBlock();
regn.Read(file, frmtPosition);
break;
case "TEXT":
var text = new ImcTextBlock();
text.Read(file, frmtPosition);
imc.Map.Add(new ImcText
{
Position = text.Position / blockAlign,
Text = text.Text
});
break;
case "JUMP":
var jump = new ImcJumpBlock();
jump.Read(file, frmtPosition);
imc.Map.Add(new ImcJump
{
Position = jump.Position / blockAlign,
Destination = jump.Destination / blockAlign,
HookId = jump.HookId,
Delay = jump.Delay
});
break;
default:
throw new NotSupportedException("Unknown block " + fourcc);
}
}
}
private static void ReadMap(ImcFile imc, BinaryReader file, int imusRawSize)
{
int mapSize = file.ReadBigEndianInt32();
if (Encoding.ASCII.GetString(file.ReadBytes(4)) != "FRMT")
{
throw new InvalidDataException();
}
int frmtSize = file.ReadBigEndianInt32();
if (frmtSize != 20)
{
throw new InvalidDataException();
}
int frmtPosition = file.ReadBigEndianInt32();
if (mapSize + 24 != frmtPosition)
{
throw new InvalidDataException();
}
int frmtIsBigEndian = file.ReadBigEndianInt32();
if (frmtIsBigEndian != 1)
{
throw new InvalidDataException();
}
imc.BitsPerSample = file.ReadBigEndianInt32();
imc.SampleRate = file.ReadBigEndianInt32();
imc.Channels = file.ReadBigEndianInt32();
int blockAlign = imc.BlockAlign;
while (true)
{
string fourcc = Encoding.ASCII.GetString(file.ReadBytes(4));
if (string.Equals(fourcc, "STOP", StringComparison.Ordinal))
{
int size = file.ReadBigEndianInt32();
if (size != 4)
{
throw new InvalidDataException();
}
int position = file.ReadBigEndianInt32() - frmtPosition;
if (position != imusRawSize - mapSize - 16)
{
throw new InvalidDataException();
}
break;
}
switch (fourcc)
{
case "REGN":
var regn = new ImcRegnBlock();
regn.Read(file, frmtPosition);
break;
case "TEXT":
var text = new ImcTextBlock();
text.Read(file, frmtPosition);
imc.Map.Add(new ImcText
{
Position = text.Position / blockAlign,
Text = text.Text
});
break;
case "JUMP":
var jump = new ImcJumpBlock();
jump.Read(file, frmtPosition);
imc.Map.Add(new ImcJump
{
Position = jump.Position / blockAlign,
Destination = jump.Destination / blockAlign,
HookId = jump.HookId,
Delay = jump.Delay
});
break;
default:
throw new NotSupportedException("Unknown block " + fourcc);
}
}
}
