}
/* following functions are local */
-static int ReduceHeight( int i_ratio )
-{
- int i_dummy = VOUT_ASPECT_FACTOR;
- int i_pgcd = 1;
-
- if( !i_ratio )
- {
- return i_pgcd;
- }
-
- /* VOUT_ASPECT_FACTOR is (2^7 * 3^3 * 5^3), we just check for 2, 3 and 5 */
- while( !(i_ratio & 1) && !(i_dummy & 1) )
- {
- i_ratio >>= 1;
- i_dummy >>= 1;
- i_pgcd <<= 1;
- }
-
- while( !(i_ratio % 3) && !(i_dummy % 3) )
- {
- i_ratio /= 3;
- i_dummy /= 3;
- i_pgcd *= 3;
- }
-
- while( !(i_ratio % 5) && !(i_dummy % 5) )
- {
- i_ratio /= 5;
- i_dummy /= 5;
- i_pgcd *= 5;
- }
-
- return i_pgcd;
-}
-
static void AspectRatio( int i_aspect, int *i_aspect_x, int *i_aspect_y )
{
- unsigned int i_pgcd = ReduceHeight( i_aspect );
+ const int i_pgcd = i_aspect ? GCD( i_aspect, VOUT_ASPECT_FACTOR ) : 1;
*i_aspect_x = i_aspect / i_pgcd;
*i_aspect_y = VOUT_ASPECT_FACTOR / i_pgcd;
}