avutil/mathematics/av_add_stable: avoid unneeded variable

[ffmpeg.git] / libavutil / mathematics.c

diff --git a/libavutil/mathematics.c b/libavutil/mathematics.c
index 81841f7..48373bf 100644 (file)
--- a/libavutil/mathematics.c
+++ b/libavutil/mathematics.c
@@ -188,14 +188,14 @@ simple_round:
 
 int64_t av_add_stable(AVRational ts_tb, int64_t ts, AVRational inc_tb, int64_t inc)
 {
-    AVRational step = av_mul_q(inc_tb, (AVRational) {inc, 1});
+    inc_tb = av_mul_q(inc_tb, (AVRational) {inc, 1});
 
-    if (av_cmp_q(step, ts_tb) < 0) {
+    if (av_cmp_q(inc_tb, ts_tb) < 0) {
         //increase step is too small for even 1 step to be representable
         return ts;
     } else {
-        int64_t old = av_rescale_q(ts, ts_tb, step);
-        int64_t old_ts = av_rescale_q(old, step, ts_tb);
-        return av_rescale_q(old + 1, step, ts_tb) + (ts - old_ts);
+        int64_t old = av_rescale_q(ts, ts_tb, inc_tb);
+        int64_t old_ts = av_rescale_q(old, inc_tb, ts_tb);
+        return av_rescale_q(old + 1, inc_tb, ts_tb) + (ts - old_ts);
     }
 }