shithub: libvpx

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Avoid dividing by 0 in vp8 gf_group bits compute

BUG=webm:1653

Change-Id: Ic59fe5e573f08dbca678d3927d4a750ae75f903c

--- a/vp8/encoder/firstpass.c

+++ b/vp8/encoder/firstpass.c

@@ -2072,9 +2072,10 @@

      * score, otherwise it may be worse off than an "un-boosted" frame

      */

     else {

+      // Avoid division by 0 by clamping cpi->twopass.kf_group_error_left to 1

       int alt_gf_bits =

           (int)((double)cpi->twopass.kf_group_bits * mod_frame_err /

-                DOUBLE_DIVIDE_CHECK((double)cpi->twopass.kf_group_error_left));

+                (double)VPXMAX(cpi->twopass.kf_group_error_left, 1));

       if (alt_gf_bits > gf_bits) {

         gf_bits = alt_gf_bits;