ra144: factor division out

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
12 years ago · 127b70e423
parent 7200fecd9b
commit 127b70e423
1 changed files with 2 additions and 1 deletions
--- a/libavcodec/ra144.c
+++ b/libavcodec/ra144.c
@ -1566,8 +1566,9 @@ int ff_eval_refl(int *refl, const int16_t *coefs, AVCodecContext *avctx)
        if (!b)
            b = -2;

+        b = 0x1000000 / b;
        for (j=0; j <= i; j++)
-            bp1[j] = ((bp2[j] - ((refl[i+1] * bp2[i-j]) >> 12)) * (0x1000000 / b)) >> 12;
+            bp1[j] = ((bp2[j] - ((refl[i+1] * bp2[i-j]) >> 12)) * b) >> 12;

        if ((unsigned) bp1[i] + 0x1000 > 0x1fff)
            return 1;