Ejemplos de READ_PIXEL en C++ (Cpp)

Ejemplo n.º 1

bool MDFN_ResizeSurface(const MDFN_Surface *src, const MDFN_Rect *src_rect, const MDFN_Rect *LineWidths, MDFN_Surface *dest, const MDFN_Rect *dest_rect)
{
    double src_x_inc, src_y_inc;
    double src_x, src_y;
    uint32 *pixels = src->pixels;
    uint32 x_ip_limit, y_ip_limit;

//printf("%ld, %d %d, %d %d\n", (long)pixels, src_rect->w, dest_rect->w, src_rect->h, dest_rect->h);

    src_x_inc = (double)src_rect->w / dest_rect->w;
    src_y_inc = (double)src_rect->h / dest_rect->h;

    x_ip_limit = src_rect->x + src_rect->w;
    y_ip_limit = src_rect->y + src_rect->h;

    src_y = src_rect->y;

    for(int32 y = 0; y < dest_rect->h; y++)
    {
        uint32 *dest_pix = dest->pixels + (dest_rect->y + y) * dest->pitch32;

        if(LineWidths)
        {
            src_x = LineWidths[INT(src_y)].x;
            src_x_inc = (double)LineWidths[INT(src_y)].w / dest_rect->w;
            x_ip_limit = LineWidths[INT(src_y)].x + LineWidths[INT(src_y)].w;
        }
        else
            src_x = src_rect->x;

        for(int32 x = 0; x < dest_rect->w; x++)
        {
            double components[4] = {0, 0, 0, 0};
            double div_fib = 1;

            READ_PIXEL(src_x, src_y, components);

            if(INT(src_x_inc) > 1)
            {
                for(double subx = 1; subx < (INT(src_x_inc) - 1); subx++)
                {
                    READ_PIXEL(INT(src_x) + subx, INT(src_y), components);
                    div_fib++;
                }

                READ_PIXEL(src_x + src_x_inc - 1, src_y, components);
                div_fib++;
            }

            if(INT(src_y_inc) > 1)
            {
                for(double suby = 1; suby < (INT(src_y_inc) - 1); suby++)
                {
                    READ_PIXEL(INT(src_x), INT(src_y) + suby, components);
                    div_fib++;
                }

                READ_PIXEL(src_x, src_y + src_y_inc - 1, components);
                div_fib++;
            }

            for(unsigned int i = 0; i < 4; i++)
            {
                components[i] /= div_fib;
                if(components[i] < 0) components[i] = 0;
                if(components[i] > 255) components[i] = 255;
            }

            dest_pix[x] = ((int)components[0] << 0) | ((int)components[1] << 8) | ((int)components[2] << 16) | ((int)components[3] << 24);
            src_x += src_x_inc;
        }
        src_y += src_y_inc;
    }


    return(TRUE);
}

Ejemplo n.º 2

Archivo: resize.cpp Proyecto: Nikolaj64/emu-ex-plus-alpha

bool MDFN_ResizeSurface(const MDFN_Surface *src, const MDFN_Rect *src_rect, const int32 *LineWidths, MDFN_Surface *dest, const MDFN_Rect *dest_rect)
{
#ifdef CONFIG_SUPPORT_32BPP
	 double src_x_inc, src_y_inc;
	 double src_x, src_y;
	 uint32 *pixels = src->pixels;
	 uint32 x_ip_limit, y_ip_limit;

	 //printf("%ld, %d %d, %d %d\n", (long)pixels, src_rect->w, dest_rect->w, src_rect->h, dest_rect->h);

	 src_x_inc = (double)src_rect->w / dest_rect->w;
	 src_y_inc = (double)src_rect->h / dest_rect->h;

	 x_ip_limit = src_rect->x + src_rect->w;
	 y_ip_limit = src_rect->y + src_rect->h;

	 src_y = src_rect->y;

	 for(int32 y = 0; y < dest_rect->h; y++)
	 {
	  uint32 *dest_pix = dest->pixels + dest_rect->x + (dest_rect->y + y) * dest->pitch32;
	  bool ZeroDimensionSource = false;

	  if(src_rect->h == 0)
	  {
	   ZeroDimensionSource = true;
	  }
	  else
	  {
	   if(LineWidths)
	   {
	    src_x = LineWidths[INT(src_y)].x;
	    src_x_inc = (double)LineWidths[INT(src_y)].w / dest_rect->w;
	    x_ip_limit = LineWidths[INT(src_y)].x + LineWidths[INT(src_y)].w;

	    if(LineWidths[INT(src_y)].w == 0)
	     ZeroDimensionSource = true;
	   }
	   else
	   {
	    src_x = src_rect->x;

	    if(src_rect->w == 0)
	     ZeroDimensionSource = true;
	   }
	  }

	  if(ZeroDimensionSource)
	  {
	   puts("All Hail Lelouch!");

	   for(int32 x = 0; x < dest_rect->w; x++)
	    dest_pix[x] = 0;
	  }
	  else for(int32 x = 0; x < dest_rect->w; x++)
	  {
	   double components[4] = {0, 0, 0, 0};
	   double div_fib = 1;

	   //printf("%d %d, %d %d\n", (int)src_x, (int)src_y, x_ip_limit, y_ip_limit);

	   READ_PIXEL(src_x, src_y, components);

	   if(INT(src_x_inc) > 1)
	   {
	    for(double subx = 1; subx < (INT(src_x_inc) - 1); subx++)
	    {
	     READ_PIXEL(INT(src_x) + subx, INT(src_y), components);
	     div_fib++;
	    }

	    READ_PIXEL(src_x + src_x_inc - 1, src_y, components);
	    div_fib++;
	   }

	   if(INT(src_y_inc) > 1)
	   {
	    for(double suby = 1; suby < (INT(src_y_inc) - 1); suby++)
	    {
	     READ_PIXEL(INT(src_x), INT(src_y) + suby, components);
	     div_fib++;
	    }

	    READ_PIXEL(src_x, src_y + src_y_inc - 1, components);
	    div_fib++;
	   }

	   for(unsigned int i = 0; i < 4; i++)
	   {
	    components[i] /= div_fib;
	    if(components[i] < 0) components[i] = 0;
	    if(components[i] > 255) components[i] = 255;
	   }

	   dest_pix[x] = ((int)components[0] << 0) | ((int)components[1] << 8) | ((int)components[2] << 16) | ((int)components[3] << 24);
	   src_x += src_x_inc;
	  }
	  src_y += src_y_inc;
 }

#endif
 return(TRUE);
}