uint8_t* convert_to_greyscale(uint8_t* data, int height, int width, int planes)
{
uint8_t* grey = malloc(width * height);
int index = 0;
for (int i = 0; i < height * width * planes; i += planes) {
grey[index] = rgb_to_l(data[i], data[i+1], data[i+2]);
index++;
}
return grey;
}
Bitmap* SoftGlow::Process1(const Bitmap* src, int radius, float sharpness, float brightness)
{
assert(src && src->IsValid());
int width = src->Width();
int height = src->Height();
Bitmap* tmp = new Bitmap(width, height, 8);
assert(tmp);
for (int y = 0; y < height; y++)
{
uint8* p0 = src->Get(0, y);
uint8* p1 = tmp->Get(0, y);
for (int x = 0; x < width; x++)
{
uint8 b = *(p0 + 0);
uint8 g = *(p0 + 1);
uint8 r = *(p0 + 2);
*p1 = (uint8)rgb_to_l(r, g, b);
*p1 = (uint8)CalcSharpAndBright(*p1, sharpness, brightness);
p0 += src->PixelBytes();
p1 += tmp->PixelBytes();
}
}
Gaussion(tmp, (float)radius);
#ifdef _DEBUG
tmp->Save("f:\\tmp0.bmp");
#endif
Bitmap* dst = new Bitmap(src->Width(), src->Height(), src->biBitCount);
assert(dst);
int temp;
for (int y = 0; y < height; y++)
{
uint8* p0 = src->Get(0, y);
uint8* p1 = tmp->Get(0, y);
uint8* p2 = dst->Get(0, y);
for (int x = 0; x < width; x++)
{
//screen op
*(p2 + 0) = 255 - INT_MULT((255 - *(p0 + 0)), (255 - *p1), temp);
*(p2 + 1) = 255 - INT_MULT((255 - *(p0 + 1)), (255 - *p1), temp);
*(p2 + 2) = 255 - INT_MULT((255 - *(p0 + 2)), (255 - *p1), temp);
p0 += src->PixelBytes();
p1 += tmp->PixelBytes();
p2 += dst->PixelBytes();
}
}
delete tmp;
return dst;
}
