[vlc-devel] commit: Replaced ReduceHeight by GCD (vout). (Laurent Aimar )

[git version control]

vlc | branch: master | Laurent Aimar <fenrir at videolan.org> | Sat Apr 25 23:14:24 2009 +0200| [69d94d9c53ea04532b63ac427d99de22d5f68c54] | committer: Laurent Aimar 

Replaced ReduceHeight by GCD (vout).

> http://git.videolan.org/gitweb.cgi/vlc.git/?a=commit;h=69d94d9c53ea04532b63ac427d99de22d5f68c54
---

 src/video_output/video_output.c |   37 +------------------------------------
 1 files changed, 1 insertions(+), 36 deletions(-)

diff --git a/src/video_output/video_output.c b/src/video_output/video_output.c
index 3024eed..5d48bca 100644
--- a/src/video_output/video_output.c
+++ b/src/video_output/video_output.c
@@ -1577,44 +1577,9 @@ static void ChromaDestroy( vout_thread_t *p_vout )
 }
 
 /* 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;
 }