libvpx: Pull from upstream

source/libvpx/vp8/encoder/firstpass.c

Index: source/libvpx/vp8/encoder/firstpass.c
===================================================================
--- source/libvpx/vp8/encoder/firstpass.c	(revision 251189)
+++ source/libvpx/vp8/encoder/firstpass.c	(working copy)
@@ -940,9 +940,9 @@
     /* Crude estimate of overhead cost from modes
      * << 9 is the normalization to (bits * 512) used in vp8_bits_per_mb
      */
-    mode_cost =((((av_pct_inter - av_pct_motion) * zz_cost) +
-                (av_pct_motion * motion_cost) +
-                (av_intra * intra_cost)) * cpi->common.MBs) * 512;
+    mode_cost = (int64_t)((((av_pct_inter - av_pct_motion) * zz_cost) +
+                             (av_pct_motion * motion_cost) +
+                             (av_intra * intra_cost)) * cpi->common.MBs) * 512;
 
     return mv_cost + mode_cost;
 }
@@ -2310,7 +2310,7 @@
                 pct_extra = (pct_extra > 20) ? 20 : pct_extra;
 
                 cpi->twopass.alt_extra_bits =
-                    (cpi->twopass.gf_group_bits * pct_extra) / 100;
+                    (int)(cpi->twopass.gf_group_bits * pct_extra) / 100;
                 cpi->twopass.gf_group_bits -= cpi->twopass.alt_extra_bits;
                 cpi->twopass.alt_extra_bits /=
                     ((cpi->baseline_gf_interval-1)>>1);
@@ -2386,7 +2386,7 @@
             target_frame_size = max_bits;
 
         if (target_frame_size > cpi->twopass.gf_group_bits)
-            target_frame_size = cpi->twopass.gf_group_bits;
+            target_frame_size = (int)cpi->twopass.gf_group_bits;
     }
 
     /* Adjust error and bits remaining */