private byte[] DecodeUnkCStripe(ScummBinaryReader reader, byte codingShift, int stripHeight, Color[] roomPalette)
{
var data = new byte[32 * stripHeight];
var color = (int)reader.ReadByte();
var stripePixelsLeft = 8 * stripHeight;
var pixelIndex = 0;
int inc = -1;
while (stripePixelsLeft > 0)
{
var x = pixelIndex / stripHeight;
var y = pixelIndex % stripHeight;
var pixelAddress = y * 32 + x * 4;
data[pixelAddress] = roomPalette[color].R;
data[pixelAddress + 1] = roomPalette[color].G;
data[pixelAddress + 2] = roomPalette[color].B;
data[pixelAddress + 3] = 255;
stripePixelsLeft--;
pixelIndex++;
if (reader.ReadBit() > 0)
{
if (reader.ReadBit() == 0)
{
color = reader.ReadBits(codingShift);
inc = -1;
}
else
{
if (reader.ReadBit() > 0)
{
inc = -inc;
}
color += inc;
}
}
}
reader.ResetBitCursor();
return(data);
}
private byte[] DecodeUnkAStripe(ScummBinaryReader reader, byte codingShift, int stripHeight, Color[] roomPalette)
{
var data = new byte[32 * stripHeight];
var color = reader.ReadByte();
var stripePixelsLeft = 8 * stripHeight;
data[0] = roomPalette[color].R;
data[1] = roomPalette[color].G;
data[2] = roomPalette[color].B;
data[3] = 255;
var pixelIndex = 1;
stripePixelsLeft--;
while (stripePixelsLeft > 0)
{
var pixelsCount = 1;
if (reader.ReadBit() > 0)
{
if (reader.ReadBit() == 0)
{
color = reader.ReadBits(codingShift);
}
else
{
var inc = (reader.ReadBits(3) - 4);
if (inc != 0)
{
color += (byte)inc;
}
else
{
pixelsCount = reader.ReadBits(8);
}
}
}
for (int j = 0; j < pixelsCount; j++)
{
var x = pixelIndex % 8;
var y = pixelIndex / 8;
var pixelAddress = y * 32 + x * 4;
data[pixelAddress] = roomPalette[color].R;
data[pixelAddress + 1] = roomPalette[color].G;
data[pixelAddress + 2] = roomPalette[color].B;
data[pixelAddress + 3] = 255;
stripePixelsLeft--;
pixelIndex++;
if (stripePixelsLeft == 0)
{
break;
}
}
}
reader.ResetBitCursor();
return(data);
}
