public void ReadVGA(byte[] data)
{
MemoryStream ms = new MemoryStream(data);
var loopsCount = ms.ReadB();
ms.Position++; // Skip const 80
var mask = ms.ReadUShortBE();
ms.Position += 2; // Skip unkown
var palOffset = ms.ReadUShortBE();
ushort[] offsets = new ushort[loopsCount];
for (int i = 0; i < loopsCount; i++)
{
offsets[i] = ms.ReadUShortBE();
}
for (int i = 0; i < loopsCount; i++)
{
var loop = new Loop();
Loops.Add(loop);
ms.Position = offsets[i];
var cellsCount = ms.ReadUShortBE();
ms.Position += 2; // Skip unknown
ushort[] cellOffsets = new ushort[cellsCount];
for (int j = 0; j < cellsCount; j++)
{
cellOffsets[j] = ms.ReadUShortBE();
}
for (int j = 0; j < cellsCount; j++)
{
var cell = new Cell(this);
loop.Cells.Add(cell);
ms.Position = cellOffsets[j];
cell.Width = ms.ReadUShortBE();
cell.Height = ms.ReadUShortBE();
cell.X = ms.ReadB();
cell.Y = ms.ReadB();
cell.TransparentColor = ms.ReadB();
ms.Position++; // Skip unknown
cell.Pixels = new byte[cell.Width * cell.Height];
PicImage.ReadImageData(ms, ms, cell.Pixels, cell.TransparentColor);
}
}
ms.Position = palOffset;
ReadPalette(ms);
}
public void ReadVGA11(byte[] data)
{
MemoryStream ms = new MemoryStream(data);
var headerSize = ms.ReadUShortBE();
if (headerSize < 14)
{
throw new FormatException();
}
var loopsCount = ms.ReadB();
var scaleFlags = ms.ReadB();
var testb = ms.ReadB();
//if (testb != 1) throw new FormatException();
var sci32ScaleRes = ms.ReadB();
var totalNumberOfCells = ms.ReadUShortBE();
var palOffset = ms.ReadUIntBE();
var loopHeaderSize = ms.ReadB();
if (loopHeaderSize < 16)
{
throw new FormatException();
}
var cellHeaderSize = ms.ReadB();
if (cellHeaderSize != 36 && cellHeaderSize != 52)
{
throw new FormatException();
}
var nativeResolution = ms.ReadUShortBE();
if (palOffset > 0)
{
ms.Position = palOffset;
ReadPalette(ms);
}
for (int l = 0; l < loopsCount; l++)
{
var loop = new Loop();
Loops.Add(loop);
ms.Position = headerSize + 2 + loopHeaderSize * l;
var mirrorInfo = ms.ReadB();
var isMirror = ms.ReadB();
var cellCount = ms.ReadB();
ms.Position += 9;
var cellOffset = ms.ReadUIntBE();
if (mirrorInfo == 255)
{
for (int c = 0; c < cellCount; c++)
{
var cell = new Cell(this);
loop.Cells.Add(cell);
ms.Position = cellOffset + cellHeaderSize * c;
cell.Width = ms.ReadUShortBE();
cell.Height = ms.ReadUShortBE();
cell.X = ms.ReadShortBE();
cell.Y = ms.ReadShortBE();
cell.TransparentColor = ms.ReadB();
var always_0xa = ms.ReadB();
var temp2 = ms.ReadB();
var temp3 = ms.ReadB();
var totalCellDataSize = ms.ReadUIntBE();
var rleCellDataSize = ms.ReadUIntBE();
var paletteOffset = ms.ReadUIntBE();
var offsetRLE = ms.ReadUIntBE();
if (offsetRLE == 0)
{
throw new FormatException();
}
var offsetLiteral = ms.ReadUIntBE();
var perRowOffsets = ms.ReadUIntBE();
if (always_0xa == 0xa || always_0xa == 0x8a)
{
if (offsetLiteral == 0)
{
throw new FormatException();
}
}
else
{
if (offsetLiteral != 0)
{
throw new FormatException();
}
}
ms.Position = offsetRLE;
if (offsetLiteral == 0)
{
cell.Pixels = ms.ReadBytes(cell.Width * cell.Height);
}
else
{
ms.Position = offsetRLE;
var msLiteral = new MemoryStream(data);
msLiteral.Position = offsetLiteral;
cell.Pixels = new byte[cell.Width * cell.Height];
PicImage.ReadImageData(ms, msLiteral, cell.Pixels, cell.TransparentColor);
}
}
}
else
{
foreach (var c in Loops[mirrorInfo].Cells)
{
var cell = new Cell(this);
loop.Cells.Add(cell);
cell.Width = c.Width;
cell.Height = c.Height;
cell.X = (short)-c.X;
cell.Y = c.Y;
cell.Pixels = new byte[cell.Width * cell.Height];
for (int y = 0; y < cell.Height; y++)
{
for (int x = 0; x < cell.Width; x++)
{
cell.Pixels[y * cell.Width + x] = c.Pixels[y * cell.Width + (cell.Width - 1 - x)];
}
}
}
}
}
}