private static void setData(BinaryReader br, long baseP, byte[] data)
{
ulong num = br.ReadUInt64();
int bw = ((int)(num >> 0x30)) & 0x3F;
uint type = ((uint)(num >> 0x38)) & 0x3F;
br.BaseStream.Position += 8 + 16 + 16 + 16;
int size = (br.ReadUInt16() & 0x7FFF) << 4;
br.BaseStream.Position += 0x12L;
br.BaseStream.Position = baseP + br.ReadInt32();
Debug.WriteLine("writing:bw = " + bw + "; type = " + type + "; size = " + size);
int ds = size / 8192;
switch (type)
{
case 0:
if (bw > 0)
{
data = Reform.Decode32(data, bw, ds / bw);
}
break;
case 19:
bw /= 2;
if (bw > 0)
{
data = Reform.Decode8(data, bw, ds / bw);
}
break;
case 20:
bw /= 2;
if (bw > 0)
{
data = Reform.Decode4(data, bw, ds / bw);
}
break;
default:
throw new NotSupportedException("Unknown type: " + type);
}
Debug.WriteLine("Writing " + size + " bytes...");
Debug.WriteLineIf(size < data.Length,
"Expected " + size + " bytes, but got " + data.Length + " bytes; Truncating!");
Debug.WriteLineIf(size > data.Length, "Expected " + size + " bytes, but only got " + data.Length + " bytes!");
br.BaseStream.Write(data, 0,
Math.Min(size, (int)Math.Min(data.Length, br.BaseStream.Length - br.BaseStream.Position)));
}
protected override void setBMPInternal(int index, ref Bitmap bmp)
{
if (!file.CanWrite)
{
throw new NotSupportedException("Stream is readonly.");
}
long pos = getIMGDOffset(index);
file.Seek(pos, SeekOrigin.Begin);
if (file.ReadUInt32() != 0x44474D49)
{
throw new InvalidDataException("IMGD has bad signature.");
}
file.Seek(4, SeekOrigin.Current);
uint pixelOffset = file.ReadUInt32(),
pixelLength = file.ReadUInt32(),
paletteOffset = file.ReadUInt32(),
paletteLength = file.ReadUInt32();
file.Seek(4, SeekOrigin.Current);
ushort width = file.ReadUInt16(),
height = file.ReadUInt16();
file.Seek(6, SeekOrigin.Current);
ushort type = file.ReadUInt16();
file.Seek(20, SeekOrigin.Current);
byte encode = file.ReadByte();
if (bmp.Width != width || bmp.Height != height)
{
throw new NotSupportedException("New image has different dimensions.");
}
PixelFormat pf;
switch (type)
{
case 19:
pf = PixelFormat.Format8bppIndexed;
break;
case 20:
pf = PixelFormat.Format4bppIndexed;
break;
default:
throw new NotSupportedException("Unsupported IMGD type");
}
if (bmp.PixelFormat != pf)
{
requestQuantize(ref bmp, pf);
}
{
BitmapData pix = bmp.LockBits(Rectangle.FromLTRB(0, 0, bmp.Width, bmp.Height), ImageLockMode.ReadOnly,
pf);
var buffer = new byte[pixelLength];
try
{
Marshal.Copy(pix.Scan0, buffer, 0, (int)pixelLength);
}
finally
{
bmp.UnlockBits(pix);
}
switch (pf)
{
case PixelFormat.Format8bppIndexed:
if (encode == 7)
{
buffer = Reform.Decode32(Reform.Encode8(buffer, width / 128, height / 64), width / 128, height / 64);
}
break;
case PixelFormat.Format4bppIndexed:
if (encode == 7)
{
buffer = Reform.Decode32(Reform.Encode4(buffer, width / 128, height / 128), width / 128,
height / 128);
}
else
{
Reform.swapHLUT(buffer);
}
break;
}
file.Seek(pos + pixelOffset, SeekOrigin.Begin);
file.Write(buffer, 0, (int)pixelLength);
}
{
ColorPalette palette = bmp.Palette;
var buffer = new byte[paletteLength];
switch (pf)
{
case PixelFormat.Format8bppIndexed:
for (int i = 0; i < 256; i++)
{
var argb = (uint)palette.Entries[Reform.paletteSwap34(i)].ToArgb();
buffer[(i * 4) + 3] = (byte)Math.Ceiling((double)(argb >> 24) / 2);
buffer[i * 4] = (byte)(argb >> 16);
buffer[i * 4 + 1] = (byte)(argb >> 8);
buffer[i * 4 + 2] = (byte)argb;
}
break;
case PixelFormat.Format4bppIndexed:
for (int i = 0; i < 16; i++)
{
var argb = (uint)palette.Entries[i].ToArgb();
buffer[(i * 4) + 3] = (byte)Math.Ceiling((double)(argb >> 24) / 2);
buffer[i * 4] = (byte)(argb >> 16);
buffer[i * 4 + 1] = (byte)(argb >> 8);
buffer[i * 4 + 2] = (byte)argb;
}
break;
}
file.Seek(pos + paletteOffset, SeekOrigin.Begin);
file.Write(buffer, 0, (int)paletteLength);
}
}