Extend fill_rectangle() support for 16bit

Originally committed as revision 22036 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/rectangle.h

@@ -58,7 +58,7 @@ static av_always_inline void fill_rectangle(void *vp, int w, int h, int stride,
         *(uint16_t*)(p + 2*stride)= v;
         *(uint16_t*)(p + 3*stride)= v;
     }else if(w==4){
-        const uint32_t v= size==4 ? val : val*0x01010101;
+        const uint32_t v= size==4 ? val : size==2 ? val*0x00010001 : val*0x01010101;
         *(uint32_t*)(p + 0*stride)= v;
         if(h==1) return;
         *(uint32_t*)(p + 1*stride)= v;
@@ -68,7 +68,7 @@ static av_always_inline void fill_rectangle(void *vp, int w, int h, int stride,
     }else if(w==8){
     //gcc can't optimize 64bit math on x86_32
 #if HAVE_FAST_64BIT
-        const uint64_t v= val*0x0100000001ULL;
+        const uint64_t v=  size==2 ? val*0x0001000100010001ULL : val*0x0100000001ULL;
         *(uint64_t*)(p + 0*stride)= v;
         if(h==1) return;
         *(uint64_t*)(p + 1*stride)= v;
@@ -87,34 +87,35 @@ static av_always_inline void fill_rectangle(void *vp, int w, int h, int stride,
         *(uint64_t*)(p + 0+3*stride)= v;
         *(uint64_t*)(p + 8+3*stride)= v;
 #else
-        *(uint32_t*)(p + 0+0*stride)= val;
-        *(uint32_t*)(p + 4+0*stride)= val;
+        const uint32_t v= size==2 ? val*0x00010001 : val*0x01010101;
+        *(uint32_t*)(p + 0+0*stride)= v;
+        *(uint32_t*)(p + 4+0*stride)= v;
         if(h==1) return;
-        *(uint32_t*)(p + 0+1*stride)= val;
-        *(uint32_t*)(p + 4+1*stride)= val;
+        *(uint32_t*)(p + 0+1*stride)= v;
+        *(uint32_t*)(p + 4+1*stride)= v;
         if(h==2) return;
-        *(uint32_t*)(p + 0+2*stride)= val;
-        *(uint32_t*)(p + 4+2*stride)= val;
-        *(uint32_t*)(p + 0+3*stride)= val;
-        *(uint32_t*)(p + 4+3*stride)= val;
+        *(uint32_t*)(p + 0+2*stride)= v;
+        *(uint32_t*)(p + 4+2*stride)= v;
+        *(uint32_t*)(p + 0+3*stride)= v;
+        *(uint32_t*)(p + 4+3*stride)= v;
     }else if(w==16){
-        *(uint32_t*)(p + 0+0*stride)= val;
-        *(uint32_t*)(p + 4+0*stride)= val;
-        *(uint32_t*)(p + 8+0*stride)= val;
-        *(uint32_t*)(p +12+0*stride)= val;
-        *(uint32_t*)(p + 0+1*stride)= val;
-        *(uint32_t*)(p + 4+1*stride)= val;
-        *(uint32_t*)(p + 8+1*stride)= val;
-        *(uint32_t*)(p +12+1*stride)= val;
+        *(uint32_t*)(p + 0+0*stride)= v;
+        *(uint32_t*)(p + 4+0*stride)= v;
+        *(uint32_t*)(p + 8+0*stride)= v;
+        *(uint32_t*)(p +12+0*stride)= v;
+        *(uint32_t*)(p + 0+1*stride)= v;
+        *(uint32_t*)(p + 4+1*stride)= v;
+        *(uint32_t*)(p + 8+1*stride)= v;
+        *(uint32_t*)(p +12+1*stride)= v;
         if(h==2) return;
-        *(uint32_t*)(p + 0+2*stride)= val;
-        *(uint32_t*)(p + 4+2*stride)= val;
-        *(uint32_t*)(p + 8+2*stride)= val;
-        *(uint32_t*)(p +12+2*stride)= val;
-        *(uint32_t*)(p + 0+3*stride)= val;
-        *(uint32_t*)(p + 4+3*stride)= val;
-        *(uint32_t*)(p + 8+3*stride)= val;
-        *(uint32_t*)(p +12+3*stride)= val;
+        *(uint32_t*)(p + 0+2*stride)= v;
+        *(uint32_t*)(p + 4+2*stride)= v;
+        *(uint32_t*)(p + 8+2*stride)= v;
+        *(uint32_t*)(p +12+2*stride)= v;
+        *(uint32_t*)(p + 0+3*stride)= v;
+        *(uint32_t*)(p + 4+3*stride)= v;
+        *(uint32_t*)(p + 8+3*stride)= v;
+        *(uint32_t*)(p +12+3*stride)= v;
 #endif
     }else
         assert(0);