remove useless casts

Originally committed as revision 26941 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

libswscale/rgb2rgb_template.c

@@ -325,14 +325,14 @@ static inline void RENAME(rgb16to15)(const uint8_t *src, uint8_t *dst, long src_
     mm_end = end - 3;
     while (s < mm_end)
     {
-        register uint32_t x= *((uint32_t *)s);
+        register uint32_t x= *s;
         *((uint32_t *)d) = ((x>>1)&0x7FE07FE0) | (x&0x001F001F);
         s+=4;
         d+=4;
     }
     if (s < end)
     {
-        register uint16_t x= *((uint16_t *)s);
+        register uint16_t x= *s;
         *((uint16_t *)d) = ((x>>1)&0x7FE0) | (x&0x001F);
         s+=2;
         d+=2;
@@ -936,7 +936,7 @@ static inline void RENAME(rgb15to24)(const uint8_t *src, uint8_t *dst, long src_
 #ifdef HAVE_MMX
     const uint16_t *mm_end;
 #endif
-    uint8_t *d = (uint8_t *)dst;
+    uint8_t *d = dst;
     const uint16_t *s = (uint16_t *)src;
     end = s + src_size/2;
 #ifdef HAVE_MMX
@@ -1219,7 +1219,7 @@ static inline void RENAME(rgb15to32)(const uint8_t *src, uint8_t *dst, long src_
 #ifdef HAVE_MMX
     const uint16_t *mm_end;
 #endif
-    uint8_t *d = (uint8_t *)dst;
+    uint8_t *d = dst;
     const uint16_t *s = (const uint16_t *)src;
     end = s + src_size/2;
 #ifdef HAVE_MMX
@@ -1297,7 +1297,7 @@ static inline void RENAME(rgb16to32)(const uint8_t *src, uint8_t *dst, long src_
 #ifdef HAVE_MMX
     const uint16_t *mm_end;
 #endif
-    uint8_t *d = (uint8_t *)dst;
+    uint8_t *d = dst;
     const uint16_t *s = (uint16_t *)src;
     end = s + src_size/2;
 #ifdef HAVE_MMX
@@ -1366,7 +1366,7 @@ static inline void RENAME(rgb16to32)(const uint8_t *src, uint8_t *dst, long src_
 static inline void RENAME(rgb32tobgr32)(const uint8_t *src, uint8_t *dst, long src_size)
 {
     long idx = 15 - src_size;
-    uint8_t *s = (uint8_t *) src-idx, *d = dst-idx;
+    uint8_t *s = src-idx, *d = dst-idx;
 #ifdef HAVE_MMX
     asm volatile(
     "test          %0, %0           \n\t"