vp9_calc_pframe_target_size_one_pass_cbr: fix int overflow

vp9/encoder/vp9_ratectrl.c:2171:23: runtime error: signed integer
overflow: 103079280 * -22 cannot be represented in type 'int'

Bug: chromium:1473268
Change-Id: Ic1de7d48e74d94c2a992e53ec4382b5b44dba7af

diff --git a/vp9/encoder/vp9_ratectrl.c b/vp9/encoder/vp9_ratectrl.c
index c32745b..16c4752 100644 (file)
--- a/vp9/encoder/vp9_ratectrl.c
+++ b/vp9/encoder/vp9_ratectrl.c
@@ -2168,12 +2168,12 @@ int vp9_calc_pframe_target_size_one_pass_cbr(const VP9_COMP *cpi) {
   if (diff > 0) {
     // Lower the target bandwidth for this frame.
     const int pct_low = (int)VPXMIN(diff / one_pct_bits, oxcf->under_shoot_pct);
-    target -= (target * pct_low) / 200;
+    target -= (int)(((int64_t)target * pct_low) / 200);
   } else if (diff < 0) {
     // Increase the target bandwidth for this frame.
     const int pct_high =
         (int)VPXMIN(-diff / one_pct_bits, oxcf->over_shoot_pct);
-    target += (target * pct_high) / 200;
+    target += (int)(((int64_t)target * pct_high) / 200);
   }
   if (oxcf->rc_max_inter_bitrate_pct) {
     const int max_rate =