private void stack_blur_bgra32(ImageBuffer img, int rx, int ry)
{
throw new NotImplementedException();
#if false
//typedef typename Img::color_type color_type;
//typedef typename Img::order_type order_type;
int x, y, xp, yp, i;
int stack_ptr;
int stack_start;
byte * src_pix_ptr;
byte * dst_pix_ptr;
color_type *stack_pix_ptr;
int sum_r;
int sum_g;
int sum_b;
int sum_a;
int sum_in_r;
int sum_in_g;
int sum_in_b;
int sum_in_a;
int sum_out_r;
int sum_out_g;
int sum_out_b;
int sum_out_a;
int w = img.width();
int h = img.height();
int wm = w - 1;
int hm = h - 1;
int div;
int mul_sum;
int shr_sum;
pod_vector <color_type> stack;
if (rx > 0)
{
if (rx > 254)
{
rx = 254;
}
div = rx * 2 + 1;
mul_sum = stack_blur_tables.g_stack_blur8_mul[rx];
shr_sum = stack_blur_tables.g_stack_blur8_shr[rx];
stack.allocate(div);
for (y = 0; y < h; y++)
{
sum_r =
sum_g =
sum_b =
sum_a =
sum_in_r =
sum_in_g =
sum_in_b =
sum_in_a =
sum_out_r =
sum_out_g =
sum_out_b =
sum_out_a = 0;
src_pix_ptr = img.pix_ptr(0, y);
for (i = 0; i <= rx; i++)
{
stack_pix_ptr = &stack[i];
stack_pix_ptr->r = src_pix_ptr[R];
stack_pix_ptr->g = src_pix_ptr[G];
stack_pix_ptr->b = src_pix_ptr[B];
stack_pix_ptr->a = src_pix_ptr[A];
sum_r += src_pix_ptr[R] * (i + 1);
sum_g += src_pix_ptr[G] * (i + 1);
sum_b += src_pix_ptr[B] * (i + 1);
sum_a += src_pix_ptr[A] * (i + 1);
sum_out_r += src_pix_ptr[R];
sum_out_g += src_pix_ptr[G];
sum_out_b += src_pix_ptr[B];
sum_out_a += src_pix_ptr[A];
}
for (i = 1; i <= rx; i++)
{
if (i <= wm)
{
src_pix_ptr += Img::pix_width;
}
stack_pix_ptr = &stack[i + rx];
stack_pix_ptr->r = src_pix_ptr[R];
stack_pix_ptr->g = src_pix_ptr[G];
stack_pix_ptr->b = src_pix_ptr[B];
stack_pix_ptr->a = src_pix_ptr[A];
sum_r += src_pix_ptr[R] * (rx + 1 - i);
sum_g += src_pix_ptr[G] * (rx + 1 - i);
sum_b += src_pix_ptr[B] * (rx + 1 - i);
sum_a += src_pix_ptr[A] * (rx + 1 - i);
sum_in_r += src_pix_ptr[R];
sum_in_g += src_pix_ptr[G];
sum_in_b += src_pix_ptr[B];
sum_in_a += src_pix_ptr[A];
}
stack_ptr = rx;
xp = rx;
if (xp > wm)
{
xp = wm;
}
src_pix_ptr = img.pix_ptr(xp, y);
dst_pix_ptr = img.pix_ptr(0, y);
for (x = 0; x < w; x++)
{
dst_pix_ptr[R] = (sum_r * mul_sum) >> shr_sum;
dst_pix_ptr[G] = (sum_g * mul_sum) >> shr_sum;
dst_pix_ptr[B] = (sum_b * mul_sum) >> shr_sum;
dst_pix_ptr[A] = (sum_a * mul_sum) >> shr_sum;
dst_pix_ptr += Img::pix_width;
sum_r -= sum_out_r;
sum_g -= sum_out_g;
sum_b -= sum_out_b;
sum_a -= sum_out_a;
stack_start = stack_ptr + div - rx;
if (stack_start >= div)
{
stack_start -= div;
}
stack_pix_ptr = &stack[stack_start];
sum_out_r -= stack_pix_ptr->r;
sum_out_g -= stack_pix_ptr->g;
sum_out_b -= stack_pix_ptr->b;
sum_out_a -= stack_pix_ptr->a;
if (xp < wm)
{
src_pix_ptr += Img::pix_width;
++xp;
}
stack_pix_ptr->r = src_pix_ptr[R];
stack_pix_ptr->g = src_pix_ptr[G];
stack_pix_ptr->b = src_pix_ptr[B];
stack_pix_ptr->a = src_pix_ptr[A];
sum_in_r += src_pix_ptr[R];
sum_in_g += src_pix_ptr[G];
sum_in_b += src_pix_ptr[B];
sum_in_a += src_pix_ptr[A];
sum_r += sum_in_r;
sum_g += sum_in_g;
sum_b += sum_in_b;
sum_a += sum_in_a;
++stack_ptr;
if (stack_ptr >= div)
{
stack_ptr = 0;
}
stack_pix_ptr = &stack[stack_ptr];
sum_out_r += stack_pix_ptr->r;
sum_out_g += stack_pix_ptr->g;
sum_out_b += stack_pix_ptr->b;
sum_out_a += stack_pix_ptr->a;
sum_in_r -= stack_pix_ptr->r;
sum_in_g -= stack_pix_ptr->g;
sum_in_b -= stack_pix_ptr->b;
sum_in_a -= stack_pix_ptr->a;
}
}
}
if (ry > 0)
{
if (ry > 254)
{
ry = 254;
}
div = ry * 2 + 1;
mul_sum = stack_blur_tables.g_stack_blur8_mul[ry];
shr_sum = stack_blur_tables.g_stack_blur8_shr[ry];
stack.allocate(div);
int stride = img.stride();
for (x = 0; x < w; x++)
{
sum_r =
sum_g =
sum_b =
sum_a =
sum_in_r =
sum_in_g =
sum_in_b =
sum_in_a =
sum_out_r =
sum_out_g =
sum_out_b =
sum_out_a = 0;
src_pix_ptr = img.pix_ptr(x, 0);
for (i = 0; i <= ry; i++)
{
stack_pix_ptr = &stack[i];
stack_pix_ptr->r = src_pix_ptr[R];
stack_pix_ptr->g = src_pix_ptr[G];
stack_pix_ptr->b = src_pix_ptr[B];
stack_pix_ptr->a = src_pix_ptr[A];
sum_r += src_pix_ptr[R] * (i + 1);
sum_g += src_pix_ptr[G] * (i + 1);
sum_b += src_pix_ptr[B] * (i + 1);
sum_a += src_pix_ptr[A] * (i + 1);
sum_out_r += src_pix_ptr[R];
sum_out_g += src_pix_ptr[G];
sum_out_b += src_pix_ptr[B];
sum_out_a += src_pix_ptr[A];
}
for (i = 1; i <= ry; i++)
{
if (i <= hm)
{
src_pix_ptr += stride;
}
stack_pix_ptr = &stack[i + ry];
stack_pix_ptr->r = src_pix_ptr[R];
stack_pix_ptr->g = src_pix_ptr[G];
stack_pix_ptr->b = src_pix_ptr[B];
stack_pix_ptr->a = src_pix_ptr[A];
sum_r += src_pix_ptr[R] * (ry + 1 - i);
sum_g += src_pix_ptr[G] * (ry + 1 - i);
sum_b += src_pix_ptr[B] * (ry + 1 - i);
sum_a += src_pix_ptr[A] * (ry + 1 - i);
sum_in_r += src_pix_ptr[R];
sum_in_g += src_pix_ptr[G];
sum_in_b += src_pix_ptr[B];
sum_in_a += src_pix_ptr[A];
}
stack_ptr = ry;
yp = ry;
if (yp > hm)
{
yp = hm;
}
src_pix_ptr = img.pix_ptr(x, yp);
dst_pix_ptr = img.pix_ptr(x, 0);
for (y = 0; y < h; y++)
{
dst_pix_ptr[R] = (sum_r * mul_sum) >> shr_sum;
dst_pix_ptr[G] = (sum_g * mul_sum) >> shr_sum;
dst_pix_ptr[B] = (sum_b * mul_sum) >> shr_sum;
dst_pix_ptr[A] = (sum_a * mul_sum) >> shr_sum;
dst_pix_ptr += stride;
sum_r -= sum_out_r;
sum_g -= sum_out_g;
sum_b -= sum_out_b;
sum_a -= sum_out_a;
stack_start = stack_ptr + div - ry;
if (stack_start >= div)
{
stack_start -= div;
}
stack_pix_ptr = &stack[stack_start];
sum_out_r -= stack_pix_ptr->r;
sum_out_g -= stack_pix_ptr->g;
sum_out_b -= stack_pix_ptr->b;
sum_out_a -= stack_pix_ptr->a;
if (yp < hm)
{
src_pix_ptr += stride;
++yp;
}
stack_pix_ptr->r = src_pix_ptr[R];
stack_pix_ptr->g = src_pix_ptr[G];
stack_pix_ptr->b = src_pix_ptr[B];
stack_pix_ptr->a = src_pix_ptr[A];
sum_in_r += src_pix_ptr[R];
sum_in_g += src_pix_ptr[G];
sum_in_b += src_pix_ptr[B];
sum_in_a += src_pix_ptr[A];
sum_r += sum_in_r;
sum_g += sum_in_g;
sum_b += sum_in_b;
sum_a += sum_in_a;
++stack_ptr;
if (stack_ptr >= div)
{
stack_ptr = 0;
}
stack_pix_ptr = &stack[stack_ptr];
sum_out_r += stack_pix_ptr->r;
sum_out_g += stack_pix_ptr->g;
sum_out_b += stack_pix_ptr->b;
sum_out_a += stack_pix_ptr->a;
sum_in_r -= stack_pix_ptr->r;
sum_in_g -= stack_pix_ptr->g;
sum_in_b -= stack_pix_ptr->b;
sum_in_a -= stack_pix_ptr->a;
}
}
}
#endif
}
private void stack_blur_bgra32(ImageBuffer img, int rx, int ry)
{
throw new NotImplementedException();
#if false
//typedef typename Img::color_type color_type;
//typedef typename Img::order_type order_type;
int x, y, xp, yp, i;
int stack_ptr;
int stack_start;
byte* src_pix_ptr;
byte* dst_pix_ptr;
color_type* stack_pix_ptr;
int sum_r;
int sum_g;
int sum_b;
int sum_a;
int sum_in_r;
int sum_in_g;
int sum_in_b;
int sum_in_a;
int sum_out_r;
int sum_out_g;
int sum_out_b;
int sum_out_a;
int w = img.width();
int h = img.height();
int wm = w - 1;
int hm = h - 1;
int div;
int mul_sum;
int shr_sum;
pod_vector<color_type> stack;
if(rx > 0)
{
if(rx > 254) rx = 254;
div = rx * 2 + 1;
mul_sum = stack_blur_tables.g_stack_blur8_mul[rx];
shr_sum = stack_blur_tables.g_stack_blur8_shr[rx];
stack.allocate(div);
for(y = 0; y < h; y++)
{
sum_r =
sum_g =
sum_b =
sum_a =
sum_in_r =
sum_in_g =
sum_in_b =
sum_in_a =
sum_out_r =
sum_out_g =
sum_out_b =
sum_out_a = 0;
src_pix_ptr = img.pix_ptr(0, y);
for(i = 0; i <= rx; i++)
{
stack_pix_ptr = &stack[i];
stack_pix_ptr->r = src_pix_ptr[R];
stack_pix_ptr->g = src_pix_ptr[G];
stack_pix_ptr->b = src_pix_ptr[B];
stack_pix_ptr->a = src_pix_ptr[A];
sum_r += src_pix_ptr[R] * (i + 1);
sum_g += src_pix_ptr[G] * (i + 1);
sum_b += src_pix_ptr[B] * (i + 1);
sum_a += src_pix_ptr[A] * (i + 1);
sum_out_r += src_pix_ptr[R];
sum_out_g += src_pix_ptr[G];
sum_out_b += src_pix_ptr[B];
sum_out_a += src_pix_ptr[A];
}
for(i = 1; i <= rx; i++)
{
if(i <= wm) src_pix_ptr += Img::pix_width;
stack_pix_ptr = &stack[i + rx];
stack_pix_ptr->r = src_pix_ptr[R];
stack_pix_ptr->g = src_pix_ptr[G];
stack_pix_ptr->b = src_pix_ptr[B];
stack_pix_ptr->a = src_pix_ptr[A];
sum_r += src_pix_ptr[R] * (rx + 1 - i);
sum_g += src_pix_ptr[G] * (rx + 1 - i);
sum_b += src_pix_ptr[B] * (rx + 1 - i);
sum_a += src_pix_ptr[A] * (rx + 1 - i);
sum_in_r += src_pix_ptr[R];
sum_in_g += src_pix_ptr[G];
sum_in_b += src_pix_ptr[B];
sum_in_a += src_pix_ptr[A];
}
stack_ptr = rx;
xp = rx;
if(xp > wm) xp = wm;
src_pix_ptr = img.pix_ptr(xp, y);
dst_pix_ptr = img.pix_ptr(0, y);
for(x = 0; x < w; x++)
{
dst_pix_ptr[R] = (sum_r * mul_sum) >> shr_sum;
dst_pix_ptr[G] = (sum_g * mul_sum) >> shr_sum;
dst_pix_ptr[B] = (sum_b * mul_sum) >> shr_sum;
dst_pix_ptr[A] = (sum_a * mul_sum) >> shr_sum;
dst_pix_ptr += Img::pix_width;
sum_r -= sum_out_r;
sum_g -= sum_out_g;
sum_b -= sum_out_b;
sum_a -= sum_out_a;
stack_start = stack_ptr + div - rx;
if(stack_start >= div) stack_start -= div;
stack_pix_ptr = &stack[stack_start];
sum_out_r -= stack_pix_ptr->r;
sum_out_g -= stack_pix_ptr->g;
sum_out_b -= stack_pix_ptr->b;
sum_out_a -= stack_pix_ptr->a;
if(xp < wm)
{
src_pix_ptr += Img::pix_width;
++xp;
}
stack_pix_ptr->r = src_pix_ptr[R];
stack_pix_ptr->g = src_pix_ptr[G];
stack_pix_ptr->b = src_pix_ptr[B];
stack_pix_ptr->a = src_pix_ptr[A];
sum_in_r += src_pix_ptr[R];
sum_in_g += src_pix_ptr[G];
sum_in_b += src_pix_ptr[B];
sum_in_a += src_pix_ptr[A];
sum_r += sum_in_r;
sum_g += sum_in_g;
sum_b += sum_in_b;
sum_a += sum_in_a;
++stack_ptr;
if(stack_ptr >= div) stack_ptr = 0;
stack_pix_ptr = &stack[stack_ptr];
sum_out_r += stack_pix_ptr->r;
sum_out_g += stack_pix_ptr->g;
sum_out_b += stack_pix_ptr->b;
sum_out_a += stack_pix_ptr->a;
sum_in_r -= stack_pix_ptr->r;
sum_in_g -= stack_pix_ptr->g;
sum_in_b -= stack_pix_ptr->b;
sum_in_a -= stack_pix_ptr->a;
}
}
}
if(ry > 0)
{
if(ry > 254) ry = 254;
div = ry * 2 + 1;
mul_sum = stack_blur_tables.g_stack_blur8_mul[ry];
shr_sum = stack_blur_tables.g_stack_blur8_shr[ry];
stack.allocate(div);
int stride = img.stride();
for(x = 0; x < w; x++)
{
sum_r =
sum_g =
sum_b =
sum_a =
sum_in_r =
sum_in_g =
sum_in_b =
sum_in_a =
sum_out_r =
sum_out_g =
sum_out_b =
sum_out_a = 0;
src_pix_ptr = img.pix_ptr(x, 0);
for(i = 0; i <= ry; i++)
{
stack_pix_ptr = &stack[i];
stack_pix_ptr->r = src_pix_ptr[R];
stack_pix_ptr->g = src_pix_ptr[G];
stack_pix_ptr->b = src_pix_ptr[B];
stack_pix_ptr->a = src_pix_ptr[A];
sum_r += src_pix_ptr[R] * (i + 1);
sum_g += src_pix_ptr[G] * (i + 1);
sum_b += src_pix_ptr[B] * (i + 1);
sum_a += src_pix_ptr[A] * (i + 1);
sum_out_r += src_pix_ptr[R];
sum_out_g += src_pix_ptr[G];
sum_out_b += src_pix_ptr[B];
sum_out_a += src_pix_ptr[A];
}
for(i = 1; i <= ry; i++)
{
if(i <= hm) src_pix_ptr += stride;
stack_pix_ptr = &stack[i + ry];
stack_pix_ptr->r = src_pix_ptr[R];
stack_pix_ptr->g = src_pix_ptr[G];
stack_pix_ptr->b = src_pix_ptr[B];
stack_pix_ptr->a = src_pix_ptr[A];
sum_r += src_pix_ptr[R] * (ry + 1 - i);
sum_g += src_pix_ptr[G] * (ry + 1 - i);
sum_b += src_pix_ptr[B] * (ry + 1 - i);
sum_a += src_pix_ptr[A] * (ry + 1 - i);
sum_in_r += src_pix_ptr[R];
sum_in_g += src_pix_ptr[G];
sum_in_b += src_pix_ptr[B];
sum_in_a += src_pix_ptr[A];
}
stack_ptr = ry;
yp = ry;
if(yp > hm) yp = hm;
src_pix_ptr = img.pix_ptr(x, yp);
dst_pix_ptr = img.pix_ptr(x, 0);
for(y = 0; y < h; y++)
{
dst_pix_ptr[R] = (sum_r * mul_sum) >> shr_sum;
dst_pix_ptr[G] = (sum_g * mul_sum) >> shr_sum;
dst_pix_ptr[B] = (sum_b * mul_sum) >> shr_sum;
dst_pix_ptr[A] = (sum_a * mul_sum) >> shr_sum;
dst_pix_ptr += stride;
sum_r -= sum_out_r;
sum_g -= sum_out_g;
sum_b -= sum_out_b;
sum_a -= sum_out_a;
stack_start = stack_ptr + div - ry;
if(stack_start >= div) stack_start -= div;
stack_pix_ptr = &stack[stack_start];
sum_out_r -= stack_pix_ptr->r;
sum_out_g -= stack_pix_ptr->g;
sum_out_b -= stack_pix_ptr->b;
sum_out_a -= stack_pix_ptr->a;
if(yp < hm)
{
src_pix_ptr += stride;
++yp;
}
stack_pix_ptr->r = src_pix_ptr[R];
stack_pix_ptr->g = src_pix_ptr[G];
stack_pix_ptr->b = src_pix_ptr[B];
stack_pix_ptr->a = src_pix_ptr[A];
sum_in_r += src_pix_ptr[R];
sum_in_g += src_pix_ptr[G];
sum_in_b += src_pix_ptr[B];
sum_in_a += src_pix_ptr[A];
sum_r += sum_in_r;
sum_g += sum_in_g;
sum_b += sum_in_b;
sum_a += sum_in_a;
++stack_ptr;
if(stack_ptr >= div) stack_ptr = 0;
stack_pix_ptr = &stack[stack_ptr];
sum_out_r += stack_pix_ptr->r;
sum_out_g += stack_pix_ptr->g;
sum_out_b += stack_pix_ptr->b;
sum_out_a += stack_pix_ptr->a;
sum_in_r -= stack_pix_ptr->r;
sum_in_g -= stack_pix_ptr->g;
sum_in_b -= stack_pix_ptr->b;
sum_in_a -= stack_pix_ptr->a;
}
}
}
#endif
}
private void stack_blur_gray8(ImageBuffer img, int rx, int ry)
{
throw new NotImplementedException();
#if false
int x, y, xp, yp, i;
int stack_ptr;
int stack_start;
byte *src_pix_ptr;
byte *dst_pix_ptr;
int pix;
int stack_pix;
int sum;
int sum_in;
int sum_out;
int w = img.width();
int h = img.height();
int wm = w - 1;
int hm = h - 1;
int div;
int mul_sum;
int shr_sum;
pod_vector <byte> stack;
if (rx > 0)
{
if (rx > 254)
{
rx = 254;
}
div = rx * 2 + 1;
mul_sum = stack_blur_tables.g_stack_blur8_mul[rx];
shr_sum = stack_blur_tables.g_stack_blur8_shr[rx];
stack.allocate(div);
for (y = 0; y < h; y++)
{
sum = sum_in = sum_out = 0;
src_pix_ptr = img.pix_ptr(0, y);
pix = *src_pix_ptr;
for (i = 0; i <= rx; i++)
{
stack[i] = pix;
sum += pix * (i + 1);
sum_out += pix;
}
for (i = 1; i <= rx; i++)
{
if (i <= wm)
{
src_pix_ptr += Img::pix_step;
}
pix = *src_pix_ptr;
stack[i + rx] = pix;
sum += pix * (rx + 1 - i);
sum_in += pix;
}
stack_ptr = rx;
xp = rx;
if (xp > wm)
{
xp = wm;
}
src_pix_ptr = img.pix_ptr(xp, y);
dst_pix_ptr = img.pix_ptr(0, y);
for (x = 0; x < w; x++)
{
*dst_pix_ptr = (sum * mul_sum) >> shr_sum;
dst_pix_ptr += Img::pix_step;
sum -= sum_out;
stack_start = stack_ptr + div - rx;
if (stack_start >= div)
{
stack_start -= div;
}
sum_out -= stack[stack_start];
if (xp < wm)
{
src_pix_ptr += Img::pix_step;
pix = *src_pix_ptr;
++xp;
}
stack[stack_start] = pix;
sum_in += pix;
sum += sum_in;
++stack_ptr;
if (stack_ptr >= div)
{
stack_ptr = 0;
}
stack_pix = stack[stack_ptr];
sum_out += stack_pix;
sum_in -= stack_pix;
}
}
}
if (ry > 0)
{
if (ry > 254)
{
ry = 254;
}
div = ry * 2 + 1;
mul_sum = stack_blur_tables.g_stack_blur8_mul[ry];
shr_sum = stack_blur_tables.g_stack_blur8_shr[ry];
stack.allocate(div);
int stride = img.stride();
for (x = 0; x < w; x++)
{
sum = sum_in = sum_out = 0;
src_pix_ptr = img.pix_ptr(x, 0);
pix = *src_pix_ptr;
for (i = 0; i <= ry; i++)
{
stack[i] = pix;
sum += pix * (i + 1);
sum_out += pix;
}
for (i = 1; i <= ry; i++)
{
if (i <= hm)
{
src_pix_ptr += stride;
}
pix = *src_pix_ptr;
stack[i + ry] = pix;
sum += pix * (ry + 1 - i);
sum_in += pix;
}
stack_ptr = ry;
yp = ry;
if (yp > hm)
{
yp = hm;
}
src_pix_ptr = img.pix_ptr(x, yp);
dst_pix_ptr = img.pix_ptr(x, 0);
for (y = 0; y < h; y++)
{
*dst_pix_ptr = (sum * mul_sum) >> shr_sum;
dst_pix_ptr += stride;
sum -= sum_out;
stack_start = stack_ptr + div - ry;
if (stack_start >= div)
{
stack_start -= div;
}
sum_out -= stack[stack_start];
if (yp < hm)
{
src_pix_ptr += stride;
pix = *src_pix_ptr;
++yp;
}
stack[stack_start] = pix;
sum_in += pix;
sum += sum_in;
++stack_ptr;
if (stack_ptr >= div)
{
stack_ptr = 0;
}
stack_pix = stack[stack_ptr];
sum_out += stack_pix;
sum_in -= stack_pix;
}
}
}
#endif
}
private void stack_blur_gray8(ImageBuffer img, int rx, int ry)
{
throw new NotImplementedException();
#if false
int x, y, xp, yp, i;
int stack_ptr;
int stack_start;
byte* src_pix_ptr;
byte* dst_pix_ptr;
int pix;
int stack_pix;
int sum;
int sum_in;
int sum_out;
int w = img.width();
int h = img.height();
int wm = w - 1;
int hm = h - 1;
int div;
int mul_sum;
int shr_sum;
pod_vector<byte> stack;
if(rx > 0)
{
if(rx > 254) rx = 254;
div = rx * 2 + 1;
mul_sum = stack_blur_tables.g_stack_blur8_mul[rx];
shr_sum = stack_blur_tables.g_stack_blur8_shr[rx];
stack.allocate(div);
for(y = 0; y < h; y++)
{
sum = sum_in = sum_out = 0;
src_pix_ptr = img.pix_ptr(0, y);
pix = *src_pix_ptr;
for(i = 0; i <= rx; i++)
{
stack[i] = pix;
sum += pix * (i + 1);
sum_out += pix;
}
for(i = 1; i <= rx; i++)
{
if(i <= wm) src_pix_ptr += Img::pix_step;
pix = *src_pix_ptr;
stack[i + rx] = pix;
sum += pix * (rx + 1 - i);
sum_in += pix;
}
stack_ptr = rx;
xp = rx;
if(xp > wm) xp = wm;
src_pix_ptr = img.pix_ptr(xp, y);
dst_pix_ptr = img.pix_ptr(0, y);
for(x = 0; x < w; x++)
{
*dst_pix_ptr = (sum * mul_sum) >> shr_sum;
dst_pix_ptr += Img::pix_step;
sum -= sum_out;
stack_start = stack_ptr + div - rx;
if(stack_start >= div) stack_start -= div;
sum_out -= stack[stack_start];
if(xp < wm)
{
src_pix_ptr += Img::pix_step;
pix = *src_pix_ptr;
++xp;
}
stack[stack_start] = pix;
sum_in += pix;
sum += sum_in;
++stack_ptr;
if(stack_ptr >= div) stack_ptr = 0;
stack_pix = stack[stack_ptr];
sum_out += stack_pix;
sum_in -= stack_pix;
}
}
}
if(ry > 0)
{
if(ry > 254) ry = 254;
div = ry * 2 + 1;
mul_sum = stack_blur_tables.g_stack_blur8_mul[ry];
shr_sum = stack_blur_tables.g_stack_blur8_shr[ry];
stack.allocate(div);
int stride = img.stride();
for(x = 0; x < w; x++)
{
sum = sum_in = sum_out = 0;
src_pix_ptr = img.pix_ptr(x, 0);
pix = *src_pix_ptr;
for(i = 0; i <= ry; i++)
{
stack[i] = pix;
sum += pix * (i + 1);
sum_out += pix;
}
for(i = 1; i <= ry; i++)
{
if(i <= hm) src_pix_ptr += stride;
pix = *src_pix_ptr;
stack[i + ry] = pix;
sum += pix * (ry + 1 - i);
sum_in += pix;
}
stack_ptr = ry;
yp = ry;
if(yp > hm) yp = hm;
src_pix_ptr = img.pix_ptr(x, yp);
dst_pix_ptr = img.pix_ptr(x, 0);
for(y = 0; y < h; y++)
{
*dst_pix_ptr = (sum * mul_sum) >> shr_sum;
dst_pix_ptr += stride;
sum -= sum_out;
stack_start = stack_ptr + div - ry;
if(stack_start >= div) stack_start -= div;
sum_out -= stack[stack_start];
if(yp < hm)
{
src_pix_ptr += stride;
pix = *src_pix_ptr;
++yp;
}
stack[stack_start] = pix;
sum_in += pix;
sum += sum_in;
++stack_ptr;
if(stack_ptr >= div) stack_ptr = 0;
stack_pix = stack[stack_ptr];
sum_out += stack_pix;
sum_in -= stack_pix;
}
}
}
#endif
}
