private static void ReadIndexedImage(BinaryReader aReader, BMPImage bmp)
{
int w = Mathf.Abs(bmp.info.width);
int h = Mathf.Abs(bmp.info.height);
int bitCount = bmp.info.nBitsPerPixel;
int rowLength = ((bitCount * w + 31) / 32) * 4;
int count = rowLength * h;
int pad = rowLength - (w * bitCount + 7) / 8;
Color32[] data = bmp.imageData = new Color32[w * h];
if (aReader.BaseStream.Position + count > aReader.BaseStream.Length)
{
Debug.LogError("Unexpected end of file. (Have " + (aReader.BaseStream.Position + count) +
" bytes, expected " + aReader.BaseStream.Length + " bytes)");
return;
}
BitStreamReader bitReader = new BitStreamReader(aReader);
for (int y = 0; y < h; y++)
{
for (int x = 0; x < w; x++)
{
int v = (int)bitReader.ReadBits(bitCount);
if (v >= bmp.palette.Count)
{
Debug.LogError("Indexed bitmap has indices greater than it's color palette");
return;
}
data[x + y * w] = bmp.palette[v];
}
bitReader.Flush();
for (int i = 0; i < pad; i++)
{
aReader.ReadByte();
}
}
}
