static public void DecodeTransparent(CBitReader s, Bitmap image, int width, int height, int depth)
{
int[] pr = new int[width];
int[] pg = new int[width];
int[] pb = new int[width];
int[] pa = new int[width];
for (int y = 0; y < height; y++)
{
int r = 0;
int g = 0;
int b = 0;
int a = 0;
int dg = 0;
int ta = 0;
bool f = true;
int samea = 0;
int samef = 0;
for (int x = 0; x < width;)
{
if (--samea < 0)
{
ta += s.ReadSigned();
if (ta == 0)
{
int n = (int)s.ReadUnsigned();
for (int i = 0; i < n + 1; i++)
{
pr[x] = 0; pg[x] = 0; pb[x] = 0; pa[x] = 0;
image.SetPixel(x++, y, Color.FromArgb(0, 0, 0, 0));
}
continue;
}
if (ta == 32)
{
samea = (int)s.ReadUnsigned();
}
a = ta * 8;
if (a >= 256)
{
a = 255;
}
}
if (--samef < 0)
{
f = f ? false : true;
samef = (int)s.ReadUnsigned();
dg = 0;
}
if (f)
{
if (samea < samef)
{
pr[x] = r; pg[x] = g; pb[x] = b; pa[x] = a;
image.SetPixel(x++, y, Color.FromArgb(a, b, g, r));
}
else
{
if (samef > 0)
{
samea -= samef;
}
for (int i = 0; i < samef + 1; i++)
{
pr[x] = r; pg[x] = g; pb[x] = b; pa[x] = a;
image.SetPixel(x++, y, Color.FromArgb(a, b, g, r));
}
samef = 0;
}
}
else
{
if (s.ReadBit() == 1)
{
r = pr[x]; g = pg[x]; b = pb[x];
pa[x] = a;
image.SetPixel(x++, y, Color.FromArgb(a, b, g, r));
dg = 0;
}
else
{
int tg = g + dg * 2;
if (tg < 0)
{
tg = 0;
}
if (tg > 255)
{
tg = 255;
}
tg -= g;
if (tg < -128)
{
tg += 256;
}
if (tg > 127)
{
tg -= 256;
}
dg = tg / 2 + s.ReadSigned();
if (dg < -128)
{
dg = -128;
}
if (dg > 127)
{
dg = 127;
}
r += dg * 2;
g += dg * 2;
b += dg * 2;
r += s.ReadSigned() * 2;
b += s.ReadSigned() * 2;
if (r > 255)
{
r = 255;
}
if (g > 255)
{
g = 255;
}
if (b > 255)
{
b = 255;
}
if (r < 0)
{
r = 0;
}
if (g < 0)
{
g = 0;
}
if (b < 0)
{
b = 0;
}
r &= 0xfe;
g &= 0xfe;
b &= 0xfe;
pr[x] = r; pg[x] = g; pb[x] = b; pa[x] = a;
image.SetPixel(x++, y, Color.FromArgb(a, b, g, r));
}
}
}
}
}
// Now this is basically 99% copied from alterdec
static public void DecodeOpaque1(CBitReader s, Bitmap image, int width, int height, int depth)
{
int[] pr = new int[width];
int[] pg = new int[width];
int[] pb = new int[width];
for (int y = 0; y < height; y++)
{
int count = -1;
int r, g, b;
int dr, dg, db;
r = g = b = 0;
dr = dg = db = 0;
for (int x = 0; x < width;)
{
if (count == -1)
{
count = (int)s.ReadUnsigned();
}
if (s.ReadBit() == 1)
{
r = pr[x]; g = pg[x]; b = pb[x];
dr = dg = db = 0;
}
else
{
int t = g + dg * 2;
if (t > 255)
{
t = 255;
}
if (t < 0)
{
t = 0;
}
t -= g;
dg = s.ReadSigned();
dg += t / 2;
if (dg < -128)
{
dg = -128;
}
if (dg > 127)
{
dg = 127;
}
db = dr = dg;
r += dr * 2;
g += dg * 2;
b += db * 2;
if (r > 255)
{
r = 255;
}
if (g > 255)
{
g = 255;
}
if (b > 255)
{
b = 255;
}
if (r < 0)
{
r = 0;
}
if (g < 0)
{
g = 0;
}
if (b < 0)
{
b = 0;
}
r += s.ReadSigned() * 2;
if (r > 255)
{
r = 255;
}
if (r < 0)
{
r = 0;
}
b += s.ReadSigned() * 2;
if (b > 255)
{
b = 255;
}
if (b < 0)
{
b = 0;
}
}
pr[x] = r; pg[x] = g; pb[x] = b;
image.SetPixel(x++, y, Color.FromArgb(b, g, r));
if (count-- == 0 && x < width)
{
int n = (int)s.ReadUnsigned() + 1;
for (int i = 0; i < n; i++)
{
pr[x] = r; pg[x] = g; pb[x] = b;
image.SetPixel(x++, y, Color.FromArgb(b, g, r));
}
dr = dg = db = 0;
}
}
}
}
