Changeset 29153

Timestamp:

06/02/14 20:38:16 (9 years ago)

Author:

gost

Message:

[titan] new function... resize

Location:

titan/titan

Files:

• header.h (modified) (1 diff)
• skin.h (modified) (1 diff)

titan/titan/header.h

@@ -663 +663 @@
 inline void drawpixelfastfb(struct fb* node, int posx, int posy, unsigned long color);
 inline void drawpixelfb(struct fb* node, int posx, int posy, unsigned long color);
+unsigned char * resize(unsigned char *origin, int ox, int oy, int dx, int dy, int type, unsigned char * dst, int flag)
 
 //volume.h

titan/titan/skin.h

@@ -4346 +4346 @@
 }
 
+unsigned char * resize(unsigned char *origin, int ox, int oy, int dx, int dy, int type, unsigned char * dst, int flag)
+{
+        unsigned char * cr;
+
+        if(dst == NULL) 
+        {
+                cr = (unsigned char*) malloc(dx*dy*3);
+
+                if(cr == NULL)
+                {
+                        printf("Error: malloc\n");
+                        return(origin);
+                }
+        } 
+        else
+                cr = dst;
+
+        if(type == 1) 
+        {
+                unsigned char *p,*l;
+                int i,j,k,ip;
+                l = cr;
+
+                for(j=0; j<dy; j++, l += dx*3)
+                {
+                        p = origin + (j*oy/dy*ox*3);
+                        for(i=0, k=0; i<dx; i++, k+=3)
+                        {
+                                ip=i*ox/dx*3;
+                                memmove(l+k, p+ip, 3);
+                        }
+                }
+        } 
+        else 
+        {
+                unsigned char *p,*q;
+                int i,j,k,l,ya,yb;
+                int sq,r,g,b;
+
+                p=cr;
+
+                int xa_v[dx];
+                for(i=0;i<dx;i++)
+                        xa_v[i] = i*ox/dx;
+                int xb_v[dx+1];
+                
+                for(i=0;i<dx;i++)
+                {
+                        xb_v[i]= (i+1)*ox/dx;
+                        if(xb_v[i]>=ox)
+                                xb_v[i]=ox-1;
+                }
+                
+                for(j=0;j<dy;j++)
+                {
+                        ya= j*oy/dy;
+                        yb= (j+1)*oy/dy; if(yb>=oy) yb=oy-1;
+                        for(i=0;i<dx;i++,p+=3)
+                        {
+                                for(l=ya,r=0,g=0,b=0,sq=0;l<=yb;l++)
+                                {
+                                        q=origin+((l*ox+xa_v[i])*3);
+                                        for(k=xa_v[i];k<=xb_v[i];k++,q+=3,sq++)
+                                        {
+                                                r+=q[0]; g+=q[1]; b+=q[2];
+                                        }
+                                }
+                                p[0]=r/sq; p[1]=g/sq; p[2]=b/sq;
+                        }
+                }
+        }
+        
+        if(flag == 1)
+                free(origin);
+        
+        return(cr);
+}
+
 #endif